Abstract
Dewatering of wastewater sludge is a difficult process. The difficulty has been attributed mainly to the fact that particles are very fine, colloidal in nature and possess a gel-like structure due to polymeric flocculation. In order to tackle the limitations in wastewater sludge dewatering, new technologies have been developed in recent years. Some technologies, such as wastewater sludge digestion, wastewater sludge mineralisation or peroxidation, allow to reduce the amount of wastewater sludge to be dewatered, or the dewaterability of the sludge, by changing the biochemical composition. Nevertheless, wastewater sludge remains hard to dewater, and therefore, an improvement in the conventional dewatering equipments is desirable. Therefore, current research tends to propose potential alternatives to enhance the dewatering ability of conventional processes, to increase the final dry solids content, and to accelerate the dewatering process with low energy consumption compared to thermal drying.
Different options have been investigated to enhance the wastewater sludge dewatering. Some of the new developments to be assimilated and assembled in this chapter include intensification of the dewatering process which combines (1) mechanical and thermal effects, (2) mechanical force and an electric field, (3) the superimposition of ultrasounds and/or magnetic fields, (4) the combined fields (e.g. electric and ultrasonic) applied simultaneously, (5) both shear and compressive forces, (6) and microwave-assisted dewatering.
This chapter focuses on the scientific and practical aspects of the application of an additional force field in laboratory/industrial dewatering and discusses this in relation to conventional dewatering techniques in terms of water content/or dry solids content and energy consumption. Indeed, the aim of this chapter is to provide a fundamental understanding of the different process variables and configurations in order to identify potential improvements and future innovative technologies for dewatering enhancement. Following a detailed outline of research in one of the most promising alterative techniques, the electrically assisted dewatering of wastewater sludge, experimental data obtained by the authors are presented in this chapter.
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References
Saveyn H, Meersseman S, Thas O, Van Der Meeren P (2005) Influence of polyelectrolyte characteristics on pressure-driven activated sludge dewatering. Colloids Surf A 262:40–51
Tchobanoglou G, Burton FL, Stensel HD (2003) Wastewater engineering: treatment and reuse. Metcalf and Eddy Inc./McGraw-Hill, New York
Glendinning S, Lamont-Black J, Jones CJFP (2007) Treatment of sewage sludge using electrokinetic geosynthetics. J Hazard Mater 139:491–499
Glendinning S, Mok CK, Kalumba D, Rogers CDF, Hunt DVL (2010) Design framework for electrokinetically enhanced dewatering of sludge. J Environ Eng 136:417–426
Vaxelaire J, Bongiovanni JM, Puiggali JR (1999) Mechanical dewatering and thermal drying of residual sludge. Environ Technol 20:29–36
Vaxelaire J, Olivier J (2006) Conditioning for municipal sludge dewatering. From filtration compression cell tests to belt press. Dry Technol 24:1225–1233
Tuan PA, Sillanpää M (2010) Migration of ions and organic matter during electro-dewatering of anaerobic sludge. J Hazard Mater 173:54–61
Tsang KR, Vesilind PA (1990) Moisture distribution in sludge. Water Sci Technol 22:135–142
Lee DJ, Lee SF (1995) Measurement of bound water content in sludge: the use of differential scanning calorimetry (DSC). J Chem Technol Biotechnol 65:359–365
Chen G, Yue PL, Mujumdar AS (2002) Sludge dewatering and drying. Dry Technol 20:883–916
Mahmoud A, Olivier J, Vaxelaire J, Hoadley AFA (2010) Electrical field: a historical review of its application and contributions in wastewater sludge dewatering. Water Res 44:2381–2407
Bouyoucos GJ (1921) A new classification of soil moisture. Soil Sci 11:33–48
Vesilind PA (1979) Treatment and disposal of wastewater sludge. Ann Arbor Science, Michigan
Smollen M (1988) Moisture retention characteristics and volume reduction of municipal sludges. Water SA 14:25–28
Smollen M (1990) Evaluation of municipal sludge drying and dewatering with respect to sludge volume reduction. Water Sci Technol 22:153–161
Vesilind PA, Martel CJ (1990) Freezing of water in wastewater sludge. J Environ Eng 116:854–862
Robinson J, Knocke WR (1992) Use of dilatometric and drying techniques for assessing sludge dewatering characteristics. Water Environ Res 64:60–68
Smith JK, Vesilind PA (1995) Dilatometric measurement of bound water in waste-water sludge. Water Res 29:2621–2626
Vesilind PA, Hsu CC (1997) Limits of sludge dewaterability. Water Sci Technol 36:87–91
Vesilind PA (1994) The role of water in sludge dewatering. Water Environ Res 66:4–11
Vaxelaire J, Cézac P (2004) Moisture distribution in activated sludges: a review. Water Res 38:2215–2230
Tarleton ES (1992) The role of field-assisted techniques in solid/liquid separation. Filtr Sep 29:246–252
Mahmood T, Zawadski M, Banerjee S (1998) Pilot study of impulse drying industrial sludge. Environ Sci Technol 32:1813–1816
Strauss K (1998) Method and device for reducing the water content of water containing brown coal. Eur Pat EP784660
Peuker UA, Stahl W (2001) Steam pressure filtration mechanical thermal dewatering process. Dry Technol 19:807–847
Couturier S (2002) Etude de la déshydration mécanique assistée thermiquement. PhD dissertation thesis, Université de Bordeaux I, France
Hulston J, De Kretser RG, Scales PJ (2004) Effect of temperature on the dewaterability of hematite suspensions. Int J Miner Process 73:269–279
Hulston J, Favas G, Chaffee AL (2005) Physico-chemical properties of Loy Yang lignite dewatered by mechanical thermal expression. Fuel 84:1940–1948
Hulston J, Chaffee A, Bergins C, Strauß K (2005) Comparison of physico-chemical properties of various lignites treated by mechanical thermal expression. Coal Prep 25:269–293
Fernandez A, Arlabosse P, Descoins N (2005) Thermally assisted mechanical dewatering: state of the art and new developments. Chem Eng Trans 7:737–742
Fernandez A, Auduc B, Arlabosse P, Mahmoud A (2009) Method for mechanical dehydration with thermal assistance. Eur Pat EP2212637
Lee EL (2006) Thermal dewatering (TDW) to reduce the water content. Dry Technol 24:225–232
Clayton SA, Scholes ON, Hoadley AFA, Wheeler RA, Mcintosh MJ, Huynh DQ (2006) Dewatering of biomaterials by mechanical thermal expression. Dry Technol 24:819–834
Clayton SA, Wheeler RA, Hoadley AFA (2007) Pore destruction resulting from mechanical thermal expression. Dry Technol 25:533–546
Couturier S, Valat M, Vaxelaire J, Puiggali JR (2007) Enhanced expression of filter cakes using a local thermal supply. Sep Purif Technol 57:321–328
Mahmoud A, Fernandez A, Arlabosse P (2008) Thermally-assisted mechanical dewatering (TAMD) of suspensions of fine particles: analysis of the influence of the operating conditions using the response surface methodology. Chemosphere 72:1765–1773
Mahmoud A, Arlabosse P, Fernandez MA (2011) Application of thermally assisted mechanical dewatering process to biomass. Biomass Bioenerg 35:288–297
Lee JE, Lee JK, Choi HK (2007) Filter Press for electro-dewatering of waterworks sludge. Dry Technol 25:1649–1657
Curvers D, Maes KC, Saveyn H, De Baets B (2007) Modelling the electro-osmotically enhanced pressure dewatering of activated sludge. Chem Eng Sci 62:2267–2276
Mujumdar AS, Yoshida H (2008) Electro-osmotic dewatering (EOD) of bio-materials. In: Vorobiev E, Lebovka N (eds) Electrotechnologies for extraction from food plants and biomaterials, 1st edn. Springer, New York
Lebovka NI, Praporscic I, Vorobiev E (2003) Enhanced expression of juice from soft vegetable tissues by pulsed electric fields: consolidation stages analysis. J Food Eng 59:309–317
Praporscic I, Muravetchi V, Vorobiev E (2004) Constant rate expressing of juice from biological tissue enhanced by pulsed electric field. Dry Technol 22:2395–2408
Gachovska T, Ngadi MO, Raghavan GSV (2006) Pulsed electric field assisted juice extraction from alfalfa. Can Biosyst Eng 48:33–37
Grimi N, Praporscic I, Lebovka N, Vorobiev E (2007) Selective extraction from carrot slices by pressing and washing enhanced by pulsed electric fields. Sep Purif Technol 58:267–273
Riera-Franco de Sarabia E, Gallego-Juárez JA (2000) Application of high-power ultrasound to enhance fluid/solid particle separation processes. Ultrasonics 38:642–646
Smythe MC, Wakeman RJ (2000) The use of acoustic fields as a filtration and dewatering aid. Ultrasonics 38:657–661
Tao D, Parekh BK (2000) Enhanced fine coal beneficiation using ultrasonic energy. Miner Metall Process 17:252–258
Stolarski M, Fuchs B, Bogal Kassa S, Eichholz C, Nirschl H (2006) Magnetic field enhanced press-filtration. Chem Eng Sci 61:6395–6403
Eichholz C, Stolarski M, Gortz V, Nirschl H (2008) Magnetic field enhanced cake filtration of superparamagnetic PVAc-particle. Chem Eng Sci 63:3193–3200
Wakeman RJ, Smythe MC (2000) Clarifying filtration of fine particle suspensions aided by electrical and acoustic fields. Chem Eng Res Des 78:125–135
Wakeman RJ, Tarleton ES (1999) Filtration. Equipment selection modelling and process simulation. Elsevier advanced technology, Oxford
Wakeman RJ, Zhang GM, Koenders MA (2000b) Effect of rotational flow induced in a rotary piston press on the formation and properties of filter cakes. In: Proceedings of 8th world filtration congress, pp 1121–1124
Olivier J (2003) Etudes des filtres à bandes pour la déshydratation mécanique des boues résiduaires urbaines. PhD dissertation thesis, Université de Pau et des Pays de l’Adour, Pau, France
Gundogdu O, Koenders MA, Wakeman RJ, Wu P (2003) Permeation through a bed on a vibrating medium: theory and experimental results. Chem Eng Sci 58:1703–1713
Gundogdu O, Koenders MA, Wakeman RJ, Wu P (2003) Vibration assisted dead-end filtration: experiments and theoretical concepts. Chem Eng Res Des 81:1–9
Gundogdu O, Koenders MA, Wakeman RJ, Wu P (2003) Permeation with vibrated media: experiments and modelling. Filtr Soc 3:106–113
Collins AG, Mitra S, Pavlostathis SG (1991) Microwave heating for sludge dewatering and drying. Res J Water Pollut Control Fed 63:921–924
Tchobanoglous G, Burton FL (1991) Wastewater engineering treatment, disposal, and reuse. McGraw-Hill, New York
Novak JT (2001) Dewatering. In: Spinosa L, Vesilind PA (eds) Sludge into biosolids: processing, disposal and utilization. IWA Pub, London
Andreasen I, Nielsen B (1993) A comparative-study of full-scale sludge dewatering equipment. Water Sci Technol 28:37–45
Lockhart NC (1986) Electro-dewatering of fine suspensions. In: Muralidhara HS (ed) Advanced in solid-liquid separation. Battelle, Columbus
Lawler DF, Chung YJ, Hwang SJ, Hull BA (1986) Anaerobic digestion: effects on particle size and dewaterability. J Water Pollut Control Fed 58:1107–1117
Li DH, Ganczarczyk JJ (1990) Structure of activated-sludge flocs. Biotechnol Bioeng 35:57–65
Snidaro D, Zartarian F, Jorand F, Bottero JY, Block JC, Manem J (1997) Characterization of activated sludge flocs structure. Water Sci Technol 36:313–320
Saveyn H (2005) Modelling and optimization of sludge conditioning and electric field assisted dewatering. PhD dissertation thesis, Ghent University, Belgium
Govoreanu R (2004) Activated sludge flocculation dynamics: on-line measurement methodology and modelling. PhD dissertation thesis, Ghent University, Belgium
Novak JT, Agerbaek ML, Sorensen BL, Hansen JA (1999) Conditioning, filtering, and expression waste activated sludge. J Environ Eng 125:816–824
Dentel SK (2001) Conditioning. In: Spinosa L, Vesilind PA (eds) Sludge into biosolids: processing, disposal and utilization. IWA Pub, London
Saveyn H, Hendrickx PMS, Dentel SK, Martins JC, Meeren PV (2008) Quantification of hydrolytic charge loss of DMAEA-Q-based polyelectrolytes by proton NMR spectroscopy and implementations for colloid titration. Water Res 42:2718–2728
Saveyn H, Curvers D, Thas O, Meeren PV (2008) Optimisation of sewage sludge conditioning and pressure dewatering by statistical modelling. Water Res 42:1061–1074
Chen Y, Yang H, Gu G (2001) Effect of acid and surfactant treatment on activated sludge dewatering and settling. Water Res 35:2615–2620
Vosteen B, Weissenberg HG (2000) New conditioning process for the dewatering of wastewater treatment sludge. Chem Eng Technol 23:677–681
Neyens E, Baeyens J (2003) A review of classic Fenton‘s peroxidation as an advanced oxidation technique. J Hazard Mater 98:33–50
Watanabe Y, Tanaka K (1999) Innovative sludge handling through palletization/thickening. Water Res 33:3245–3252
Lee CH, Liu JC (2000) Enhanced sludge dewatering by dual polyelectrolytes conditioning. Water Res 34:4430–4436
Thapa KB, Qi Y, Clayton SA, Hoadley AFA (2009) Lignite aided dewatering of digested sewage sludge. Water Res 43:623–634
Lee JE, Lee JK, Kim DS (2010) A study of the improvement in dewatering behavior of wastewater sludge through the addition of fly ash. Korean J Chem Eng 27:862–867
Erdincler A, Vesilind PA (2000) Effect of sludge cell disruption on compactibility of biological sludges. Water Sci Technol 42:119–126
Neyens E, Baeyens J (2003) A review of thermal sludge pre-treatment processes to improve dewaterability. J Hazard Mater 98:51–67
Zheng JH, Graff RA, Fillos J, Rinard I (1998) Incorporation of rapid thermal conditioning into a wastewater treatment plant. Fuel Process Technol 56:183–200
Neyens E, Baeyens J, Creemers C (2003) Alkaline thermal sludge hydrolysis. J Hazard Mater 97:295–314
Neyens E, Baeyens J, Dewil R, De Heyder B (2004) Advanced sludge treatment affects extracellular polymeric substances to improve activated sludge dewatering. J Hazard Mater 106:83–92
Örmeci B, Aarne Vesilind P (2001) Effect of dissolved organic material and cations on freeze-thaw conditioning of activated and alum sludges. Water Res 35:4299–4306
Sanin FD, Vesilind PA, Martel CJ (1994) Pathogen reduction capabilities of freeze/thaw sludge conditioning. Water Res 28:2393–2398
HellstrÖm D, KvarnstrÖm E (1997) Natural sludge dewatering. 1. Combination of freezing, thawing, and drying as dewatering methods. J Cold Reg Eng 11:1–14
Kowalska E, Chmura K, Bien J (1978) Ultrasonics in the dehydration process of sludge. Ultrasonics 16:183–185
Bien J (1988) Ultrasonic preparation of sludges to improve dewatering. Filtr Sep 25:425–426
Sakai Y, Kurakata S, Takahashi F (1991) Magnetic forced sedimentation of flocs in activated sludge supplemented with ferromagnetic powder of iron oxide. J Ferment Bioeng 71:208–210
Sakai Y, Terakado T, Takahashi F (1994) A sewage treatment process using highly condensed activated sludge with an apparatus for magnetic separation. J Ferment Bioeng 78:120–122
Sakai Y, Miama T, Takahashi F (1997) Simultaneous removal of organic and nitrogen compounds in intermittently aerated activated sludge process using magnetic separation. Water Res 31:2113–2116
Bien JB, Kempa ES, Bien JD (1997) Influence of ultrasonic field on structure and parameters of sewage sludge for dewatering process. Water Sci Technol 36:287–291
Bien J, Wolny L (1997) Changes of some sewage sludge parameters prepared with an ultrasonic field. Water Sci Technol 36:101–106
Singh BP (1999) Ultrasonically assisted rapid solid-liquid separation of fine clean coal particles. Miner Eng 12:437–443
Chu CP, Chang B-V, Liao GS, Jean DS, Lee DJ (2001) Observations on changes in ultrasonically treated waste-activated sludge. Water Res 35:1038–1046
Hattori S, Watanabe M, Endo T, Togii H, Sasaki K (2001) Effects of an external magnetic field on the sedimentation of activated sludge. World J Microbiol Biotechnol 17:279–285
Hattori S, Watanabe M, Osono H, Togii H, Sasaki K (2001) Effects of an external magnetic field on the flock size and sedimentation of activated sludge. World J Microbiol Biotechnol 17:833–838
Hattori S, Watanabe M, Sasaki K, Yasuharu H (2002) Magnetization of activated sludge by an external magnetic field. Biotechnol Lett 24:65–69
Menéndez JA, Domínguez A, Inguanzo M, Pis JJ (2004) Microwave pyrolysis of sewage sludge: analysis of the gas fraction. J Anal Appl Pyrolysis 71:657–667
Yin X, Han P, Lu X, Wang Y (2004) A review on the dewaterability of bio-sludge and ultrasound pretreatment. Ultrason Sonochem 11:337–348
Wojciechowska E (2005) Application of microwaves for sewage sludge conditioning. Water Res 39:4749–4754
Dewil R, Baeyens J, Goutvrind R (2006) Ultrasonic treatment of waste activated sludge. Environ Prog 25:121–128
Yin X, Lu X, Han P, Wang Y (2006) Ultrasonic treatment on activated sewage sludge from petro-plant for reduction. Ultrasonics 44:e397–e399
Khanal SK, Grewell D, Sung S, Van Leeuwen J (2007) Ultrasound applications in wastewater sludge pretreatment: a review. Crit Rev Environ Sci Technol 37:277–313
KyllÖnen H, Pirkonen P, GrÖnroos A (2007) Ultrasonically assisted dewatering of waste activated sludge. In: Proceedings of the 19th international congress on acoustics, Madrid, Spain
Na S, Kim Y-U, Khim J (2007) Physiochemical properties of digested sewage sludge with ultrasonic treatment. Ultrason Sonochem 14:281–285
Feng X, Deng J, Lei H, Bai T, Fan Q, Li Z (2009) Dewaterability of waste activated sludge with ultrasound conditioning. Bioresour Technol 100:1074–1081
Huan L, Yiying J, Mahar RB, Zhiyu W, Yongfeng N (2009) Effects of ultrasonic disintegration on sludge microbial activity and dewaterability. J Hazard Mater 161:1421–1426
Yu Q, Lei H, Yu G, Feng X, Li Z, Wu Z (2009) Influence of microwave irradiation on sludge dewaterability. Chem Eng J 155:88–93
Yu Q, Lei H, Li Z, Li H, Chen K, Zhang X, Liang R (2010) Physical and chemical properties of waste-activated sludge after microwave treatment. Water Res 44:2841–2849
Saveyn H, Curvers D, Jacobsen R, Meeren PV (2010) Improved dewatering by freeze–thawing of predewatered sludge cakes. Asia Pac J Chem Eng 5:798–803
Pilli S, Bhunia P, Yan S, LeBlanc RJ, Tyagi RD, Surampalli RY (2011) Ultrasonic pretreatment of sludge: a review. Ultrason Sonochem 18:1–18
La Heij EJ (1994) An analysis of sludge filtration and expression. PhD dissertation thesis, TU Eindhoven, the Netherlands
La Heij EJ, Kerkhof PJAM, Kopinga K, Pel L (1996) Determining porosity profiles during filtration and expression of sewage sludge by NMR imaging. AIChE J 42:953–959
Reichmann B, Tomas J (2001) Expression behaviour of fine particle suspensions and the consolidated cake strength. Powder Technol 121:182–189
Falk T, Wallin ML (1987) Influence of energy in filter cake dewatering. Aufbereit-Tech 28:115–125
Bergins C, Berger S, Strauss K (1999) Mechanical/thermal dewatering–a perspective for an efficient solid/liquid separation. Ceram Forum Int 76:8–12
Bergins C, Berger S, Strauss K (1999) Dewatering of fossil fuel and suspension of ultrafine particles by mechanical/thermal dewatering. Chem Eng Technol 22:923–927
Bergins C, Berger S, Strauss K (1998) Process technology for mechanical/thermal dewatering I. Aufbereit-Tech 39:58–70
Artanto Y, Chaffee AL (2005) Dewatering low rank coals by mechanical thermal expression (MTE) and its influence on organic carbon and inorganic removal. Coal Prep 25:251–267
Wheeler RA, Hoadley AFA, Clayton SA (2009) Modelling the mechanical thermal expression behaviour of lignite. Fuel 88:1741–1751
Cussó Grau N (2009) Energy balance in thermal assisted mechanical dewatering (TAMD) process. Master thesis, Escola Tècnica Superior d’Enginyeria Industrial de Barcelona Mobilitat, Barcelona, Spain
Bergins C, Hulston J, Strauss K, Chaffee AL (2007) Mechanical/thermal dewatering of lignite. Part 3: Physical properties and pore structure of MTE product coals. Fuel 86:3–16
Bergins C (2003) Kinetics and mechanism during mechanical/thermal dewatering of lignite. Fuel 82:355–364
Korger V, Stahl W (1993) Vapour pressure dewatering-a new technique for combined mechanical and thermal dewatering of filter cakes. In: Proceedings of the 6th world filtration congress, Nagoya, pp 400–404
Korger V (1995) Dampfdruckentwässerung-Ein neues kombiniertes Entfeuchtungsverfahren, Fortschritt.-Ber. VDI Reihe 3, Nr. 403 Düsseldorf: VDI Verlag, Germany
Ruf J, Stahl W (1997) The hot filter press-the new technology of vapour pressure dewatering. In: Baumann R, Weisert L (eds) Advances in filtration and separation technology, vol 11. Advancing Filtration Solution, Minneapolis
Ruf J, Korger V, Stahl W (1997) Vapour pressure dewatering in a hot filter press. Aufbereit-Tech 38:411–416
Ruf J (1998) Die technische Umsetzung der Dampfdruckentwässerung in einer Heißen Filterpresse. PhD dissertation thesis, Institut für Mechanische Verfahrenstechnik und Mechanik, Karlsruhe, Germany
Couturier S, Valat M, Vaxelaire J, Puiggali JR (2004) Mechanical dewatering of residual sludge enhanced by a local thermal supply. In: Proceedings of the world filtration congress 9, New Orleans, Louisiana, USA
Couturier S, Valat M, Vaxelaire J, Peuchot C (2005) Thermal supply at the filter medium level: a solution to enhanced expression process. In: Proceedings of the 18th annual conference of AFS, Atlanta, Georgia, USA
Gerl S, Stahl W (1996) Improved dewatering of coal by steam pressure filtration. Coal Prep 17:137–146
Peuker UA, Stahl W (1999) Scale-up of steam pressure filtration. Chem Eng Process 38:611–619
Peuker UA, Stahl W (2002) Mechanical-thermal dewatering applying steam centrifugation. Chem Eng Technol 25:368–373
Peeters B (2010) Mechanical dewatering and thermal drying of sludge in a single apparatus. Dry Technol 28:454–459
Bongert W (1976) US Pat 3970552
Furedi P (1977) US Pat 4055491
Muralidhara HS, Ensminger D (1984) Acoustic dewatering and drying: state of the art review. In: Proceedings of the IV international dry technol symposium, Kyoto, Japan
Muralidhara HS, Ensminger D, Putnam A (1985) Acoustic dewatering and drying (low and high frequency): state of the art review. Dry Technol 3:529–566
Muralidhara HS, Parekh B, Senapati N (1985b) Solid liquid separation process for fine particle suspensions by an electric and ultrasonic field. US Pat 4561953
Bekker MC, Meyer JP, Pretorius L, Van Der Merwe DF (1997) Separation of solid-liquid suspensions with ultrasonic acoustic energy. Water Res 31:2543–2549
Muralidhara HS, Bread RB, Senapati N (1987) Mechanisms of ultrasonic agglomeration for dewatering colloid suspension. Filtr Sep 24:409–413
Wang F, Ji M, Lu S (2006) Influence of ultrasonic disintegration on the dewaterability of waste activated sludge. Environ Prog 25:257–260
Tuori T (1998) Enhancing filtration by electro-acoustic methods. PhD dissertation thesis, Lougborough University, UK
Gallego-Juárez JA, Elvira-Segura L, Rodríguez-Corral G (2003) A power ultrasonic technology for deliquoring. Ultrasonics 41:255–259
Swamy KM, Rao ARK, Narasimhan KS (1983) Acoustics aids dewatering. Ultrasonics 21:280–281
Svoboda J (1982) The influence of surface forces on magnetic separation. IEEE Trans Magn 18:862–865
Tsouris C, Scott TC (1995) Flocculation of paramagnetic particles in a magnetic field. J Colloid Interface Sci 171:319–330
Charles S (1988) Aggregation in magnetic fluids and magnetic fluid composites. Chem Eng Commun 67:145–180
Chaplin M (2011) Magnetic and electric effects on water. http://www.lsbu.ac.uk/water/magnetic.html. Accessed 25 Jan 2011
Tarleton ES, Wakeman RJ (2007) Solid/liquid separation: equipment selection and process design. Butterworth-Heinemann, Oxford
Watson JL, Gardner PL (1995) Multi-force dewatering for magnetic waste materials. Miner Eng 8:191–200
Fuchs B, Hoffman C, Keller K, Rey CM (2006a) PCT/US Pat 2005 005043
Fuchs B, Stolkarski M, Stahl W, Nirschi H (2006) Magnetic field enhanced cake filtration. Filtration 6:333–339
Jacob J, Chia LHL, Boey FYC (1995) Thermal and non-thermal interaction of microwave radiation with materials. J Mater Sci 30:5321–5327
Toreci I, Kennedy KJ, Droste RL (2009) Evaluation of continuous mesophilic anaerobic sludge digestion after high temperature microwave pretreatment. Water Res 43:1273–1284
Ponne CT, Bartels PV (1995) Interaction of electromagnetic energy with biological material relation to food processing. Radiat Phys Chem 45:591–607
Thostenson ET, Chou T-W (1999) Microwave processing: fundamentals and applications. Compos Part A Appl Sci Manuf 30:1055–1071
Kaatze U (1995) Fundamentals of microwaves. Radiat Phys Chem 45:539–548
Kaatze U (1995) Microwave dielectric properties of liquids. Radiat Phys Chem 45:549–566
Fung DYC, Cunningham FE (1980) Effect of microwaves on microorganisms in foods. J Food Prot 43:641–650
NiederwÖhrmeier B, BÖhm R, Strauch D (1985) Microwave treatment as an alternative pasteurization process for the disinfection of sewage sludge: experiences with the treatment of liquid manure. In: Havelaar AH, L’Hermite P, Strauch D (eds) Inactivation of microorganisms in sewage sludge by stabilization processes. Elsevier Applied Science, London
Woo I-S, Rhee I-K, Park H-D (2000) Differential damage in bacterial cells by microwave radiation on the basis of cell wall structure. Appl Environ Microbiol 66:2243–2247
Hong SM, Park JK, Lee YO (2004) Mechanisms of microwave irradiation involved in the destruction of fecal coliforms from biosolids. Water Res 38:1615–1625
Fu D, Cai M, Chao Allen C, Liu J (1999) Initial studies on sludge drying using microwave heating. In: Proceedings of the international conference on solid waste technology management. Widener University School Engineering, Chester, PA, USA
Barton WA, Miller SA, Veal CJ (1999) The electrodewatering of sewage sludges. Dry Technol 17:497–522
Yoshida H (1993) Practical aspects of dewatering enhanced by electro-osmosis. Dry Technol 11:787–814
Moulik SP (1971) Physical aspects of electrofiltration. Environ Sci Technol 5:771–776
Yukawa H, Kobayashi K, Tsukui Y, Yamano S, Iwata M (1976) Analysis of batch electrokinetic filtration. J Chem Eng Jpn 9:396–401
Yoshida H, Shinkawa T, Yukawa H (1985) Water content and electric potential distributions in gelatinous bentonite sludge with electroosmotic dewatering. J Chem Eng Jpn 18:337–342
Krishnaswamy P, Bahnii JR (1986) Electrically coupled flow through fine particle cakes. Filtr Sep 23:289–293
Muralidhara HS, Senapati N, Beard RB (1986) A novel electroacoustic separation process for fine particle suspensions. In: Muralidhara HS (ed) Advances in solid-liquid separation. Battelle, Columbus
Gopalakrishnan S, Mujumdar AS, Weber ME (1996) Optimal off-time in interrupted electroosmotic dewatering. Sep Technol 6:197–200
Xian-shu D, Xiao-jie H, Su-ling Y, Wei-peng R, Zhi-zhong W (2009) Vacuum filter and direct current electro-osmosis dewatering of fine coal slurry. In: Proceedings of the 6th international conference on mining science and technology, Procedia Earth Planet Sci vol 1, pp 685–693
Heath LW, Dmirel T (1984) Pressurized electro-osmotic dewatering. Eng found conf flocculation sediment consol. Sea Island, Georgia
Kondoh S, Hiraoka M (1990) Commercialization of pressurized electroosmotic dehydrator (PED). Water Sci Technol 22:259–268
Kondoh S, Hiraoka M (1993) Studies on the improving dewatering method of sewage sludge by the pressurized electro-osmotic dehydrator with injection of polyaluminum chloride. In: Proceedings of the 6th world filtration congress, Nagoya
Buijs PJ, Van Diemen AJG, Stein HN (1994) Efficient dewatering of waterworks sludge by electroosmosis. Colloids Surf A Physiochem Eng Asp 85:29–36
Gazbar S, Abadie JM, Colin F (1994) Combined action of electro-osmotic drainage and mechanical compression on sludge dewatering. Water Sci Technol 30:169–175
Chen H, Mujumdar AS, Raghavan GSV (1996) Laboratory experiments on electroosmotic dewatering of vegetable sludge and mine tailings. Dry Technol 14:435–445
Larue O, Mouroko-Mitoulou T, Vorobiev E (2001) Pressurized electroosmotic dewatering in filter cycle. Dry Technol 19:2363–2377
Lee JK, Shin HS, Park CJ, Lee CG, Lee JE, Kim YW (2002) Performance evaluation of electro-dewatering system for sewage sludges. Korean J Chem Eng 19:41–45
Raats MHM, Van Diemen AJG, Laven J, Stein HN (2002) Full scale electrokinetic dewatering of waste sludge. Colloids Surf A Physicochem Eng Asp 210:231–241
Tuan PA, Jurate V, Mika S (2008) Electro-dewatering of sludge under pressure and non-pressure conditions. Environ Technol 29:1075–1084
Kobayashi K, Hakoda M, Hosoda Y, Iwata M, Yukawa H (1979) Electroosmotic flow through particle beds and electroosmotic pressure distribution. J Chem Eng Jpn 12:492–494
Yoshida H, Iwata M, Igami H, Murase T (1991) Combined operation of electroosmotic dewatering and mechanical expression. J Chem Eng Jpn 24:399–401
Iwata M, Igami H, Murase T (1991) Analysis of electroosmotic dewatering. J Chem Eng Jpn 24:45–50
Iwata M, Igami H, Murase T, Yoshida H (1991) Combined operation of electroosmotic dewatering and mechanical expression. J Chem Eng Jpn 24:399–401
Raghavan GSV, Lightfoot DG (1993) Combined field dewatering of seaweed. In: Proceedings of the American Society of Agricultural Engineers, Paper no° 936030. Summer Meeting, Spokane, WA
Lightfoot DG, Raghavan GSV (1994) Combined fields dewatering of seaweed (Nereocystis luetkeana). Trans Am Soc Agric Eng 37:899–906
Orsat V, Raghavan GSV, Norris ER (1996) Food processing waste dewatering by electro-osmosis. Can Agric Eng 38:63–67
Saveyn H, Pauwels G, Timmerman R, Meeren PV (2005) Effect of polyelectrolyte conditioning on the enhanced dewatering of activated sludge by application of an electric field during the expression phase. Water Res 39:3012–3020
Saveyn H, Meeren PV, Pauwels G, Timmerman R (2006) Bench-and pilot-scale sludge electrodewatering in a diaphragm filter press. Water Sci Technol 54:53–60
Mahmoud A, Olivier J, Vaxelaire J, Hoadley AFA (2011) Electro-dewatering of wastewater sludge: influence of the operating conditions and their interaction effects. Water Res 45(9):2795–2810
Rabie HR, Mujumdar AS, Weber ME (1994) Electroosmotic dewatering of bentonite in thin beds. Sep Technol 4:180–182
Vijh AK (1999) The Significance of current observed during combined field and pressure electroosmotic dewatering of clays. Dry Technol 17:555–563
Vijh AK (1999) Electroosmotic dewatering (EOD) of clays and suspensions: components of voltage in an electroosmotic cell. Dry Technol 17:565–574
Weber K (2002) Untersuchungen zum Einfluss eines elektrischen Feldes auf die kuchenbildende Pressfiltration, VDI Verlag GmbH
Larue O, Vorobiev E (2004) Sedimentation and water electrolysis effects in electrofiltration of kaolin suspension. AIChE J 50:3120–3133
Smollen M, Kafaar A (1994) Electroosmotically enhanced sludge dewatering: pilot-plant study. Water Sci Technol 30:159–168
Snyman HG, Forssman P, Kafaar A, Smollen M (2000) The feasibility of electro-osmotic belt filter dewatering technology at pilot scale. Water Sci Technol 41:137–144
Hwang S, Min KS (2003) Improved sludge dewatering by addition of electro-osmosis to belt filter press. J Environ Eng Sci 2:149–153
Miller SA, Murphy A, Veal CJ, Young M (1998) Improved filtration of sewage sludges using electrodewatering. End of Project Report, CSIRO Investigation Report N° ET/IR140
Lockhart NC (1983) Electroosmotic dewatering of clays. I. Influence of voltage. Colloids Surf 6:229–238
Lockhart NC (1983) Electroosmotic dewatering of clays. II. Influence of salt, acid, and flocculants. Colloids Surf 6:239–251
Lockhart NC (1983) Electro-osmotic dewatering of fine tailings from mineral processing. Int J Miner Process 10:131–140
Rabie HR, Mujumdar AS, Weber ME (1994) Interrupted electro osmotic dewatering of clay suspensions. Sep Technol 4:38–46
Yoshida H, Kitajyo K, Nakayama M (1999) Electro osmotic dewatering under A.C. electric field with periodic reversals of electrode polarity. Dry Technol 17:539–554
Yoshida H (2000) Electro-osmotic dewatering under intermittent power application by rectification of AC electric field. J Chem Eng Jpn 33:134–140
Saveyn H, Meeren PV, Hofmann R, Stahl W (2005) Modelling two-sided electrofiltration of quartz suspensions: importance of electrochemical reactions. Chem Eng Sci 60:6768–6779
Kondo S, Sano S (1994) Method of electroosmotically dehydrating sludge. US Pat 5279718
Lightfoot DG, Raghavan GSV (1995) Combined fields dewatering of seaweed with a roller press. Appl Eng Agric 11:291–295
Friehmelt V, Gidarakos E (1996) Electrokinetic dewatering of effluent sludge as a continuous process. Aufbereit-Tech/Miner Proc 37:133–141
Watanabe S, Yamada Y, Hobo Y, Hayashi N, Sumi T, Dykes D, Touchard G (2001) A new method of analysing electro-osmosis using FET models. J Electrost 51–52:455–462
Vijh A (2002) Electroosmotic dewatering by a new method using a gate electrode: field effect transistor (EFT) model or simply a multistage dewatering. Dry Technol 20:705–710
Weber K, Stahl W (2003) Influence of an electric field on filtration in a filter press. Chem Eng Technol 26:44–48
Ho MY, Chen G (2001) Enhanced electro-osmotic dewatering of fine particle suspension using a rotating anode. Ind Eng Chem Res 40:1859–1863
Zhou J, Liu Z, She P, Ding F (2001) Water removal from sludge in a horizontal electric field. Dry Technol 19:627–638
Yoshida H, Okada M (2006) Influence of electric field application with decreasing one sided area of electrodes on electro-osmotic dewatering. Dry Technol 24:1313–1316
De-Gang M, Shu-Ting Z (2007) The electro-dewatering of sludge using adsorptive material. In: Proceedings of the 5th Asia-Pacific dry conference, Guohua Chen, Hong Kong, China
Yu X, Zhang S, Xu H, Zheng L, Lü X, Ma D (2010) Influence of filter cloth on the cathode on the electroosmotic dewatering of activated sludge. Chin J Chem Eng 18:562–568
Lai CKB (2001) Salinity effect on biological sludge dewatering. PhD dissertation thesis, University of Science and Technology, Hong Kong
Chu CP, Lee DJ, Liu Z, Jin WH (2004) Morphology of sludge cake at electroosmosis dewatering. Sep Sci Technol 39:1331–1346
Esmaeily A, Elektorowicz M et al (2006) Dewatering and coliform inactivation in biosolid using electrokinetic phenomena. J Environ Eng Sci 5:197–202
Banerjee S, Law SE (1997) Elecroosmotically enhanced drying of biomass. IEEE Ind Appl Soc 3:1859–1866
Laursen S, Jensen JB (1993) Electroosmosis in filter cakes of activated-sludge. Water Res 27:777–783
Gazbar S (1993) Evaluation et amélioration des performances des procèdes de déshydratation mécanique des boues résiduaires. PhD dissertation thesis, Nancy, France
Weng CH, Yuan C (2002) Enhancement of sludge dewatering: application of electrokinetic technique. J Chin Inst Environ Eng 12:235–243
Yuan C, Weng CH (2003) Sludge dewatering by electrokinetic technique: effect of processing time and potential gradient. Adv Environ Res 7:727–732
Olivier J, Vaxelaire J, Ginisty P (2004) Gravity drainage of activated sludge: from laboratory experiments to industrial process. J Chem Technol Biotechnol 79:461–467
Gingerich I, Neufeld RD, Thomas TA (1999) Electroosmotically enhanced sludge pressure filtration. Water Environ Res 71:267–276
Condie D, Szemes F, Veal C (1996) Electrodewatering of wastewater treatment plant sludges. In: Proceedings of the 7th world filtration congress, Budapest
Perry RH, Green DW (1997) Perry’s chemical engineers‘ handbook. McGraw-Hill, New York
Mujumdar AS (2007) Handbook of industrial drying. CRC Press, Boca Raton
Friehmelt V, Gidarakos E, Laser U (1995) Dewatering of sludges using electrokinetic effects. Aufbereit-Tech 36:267–276
Citeau M, Larue O, Vorobiev E (2011) Influence of salt, pH and polyelectrolyte on the pressure electro-dewatering of sewage sludge. Water Res 45:2167–2180
Laursen S (1993) Electrokinetics in clays and filter cakes of activated-sludge. Water Sci Technol 28:181–188
Mikkelsen LH (2003) Applications and limitations of the colloid titration method for measuring activated sludge surface charges. Water Res 37:2458–2466
Acar YB, Alshawabkeh AN (1993) Principles of electrokinetic remediation. Environ Sci Technol 27:2638–2647
Acar YB, Hamed JT, Alshawabkeh AN, Gale RJ (1994) Removal of cadmium (II) from saturated kaolinite by the application of electrical current. Geotechnique 44:239–254
Acar YB, Zappi M (1995) Infrastructural needs in waste containment and environmental restoration. J Infrastruct Syst-ASCE 1:82–91
Yang GCC, Lin SL (1998) Removal of lead from a silt loam soil by electrokinetic remediation. J Hazard Mater 58:285–299
Altin A, Degirmenci M (2005) Lead (II) removal from natural soils by enhanced electrokinetic remediation. Sci Total Environ 337:1–10
Mahmoud A, Muhr L, Vasiluk S, Aleynikoff A, Lapicque F (2003) Investigation of transport phenomena in a hybrid ion exchange-electrodialysis system for the removal of copper ions. J Appl Electrochem 33:875–884
Mahmoud A, Muhr L, Grévillot G, Lapicque F (2007) Experimental tests and modelling of an electrodeionization cell for the treatment of dilute copper solutions. Can J Chem Eng 85:171–179
Monzie I, Muhr L, Lapicque F, Grévillot G (2005) Mass transfer investigations in electrodeionization processes using the microcolumn technique. Chem Eng Sci 60:1389–1399
Tuan PA, Sillanpää M (2010) Fractionation of macro and trace metals due to off-time interrupted electrodewatering. Dry Technol 28:762–772
Yang L, Nakhla G, Bassi A (2005) Electro-kinetic dewatering of oily sludges. J Hazard Mater 25:130–140
Huang J, Elektorowics M, Oleszkiewics JA (2008) Dewatering and disinfection of aerobic and anaerobic sludge using an electrokinetic (EK) system. Water Sci Technol 57:231–236
Saveyn H, Curvers D, Pel L et al (2006) In situ determination of solidosity profiles during activated sludge electrodewatering. Water Sci Technol 40:2135–2142
Miller SA, Sacchetta C, Veal C (1997) Electrodewatering of waste activated sewage sludge. In: Proceedings of the 17th AWWA federal convention, Melbourne
Yamaguchi M, Ari T, Matsushita H (1986) Dewatering of water and wastewater sludges with an electro-osmotic dewatering system. Water Waste 28:36–41
Yukawa H, Yoshida H (1986) Recent development of electroosmotic dewatering. In: Mujumdar AS (ed) Drying of solids recent international developments. Willey Eastern, New Delhi
Kondoh S, Suwa T, Sano S, Muroi O (1991) Compressive and electro-osmotic dehydrator. US Pat 5034111
ELODE Electro-Osmosis Dehydrator: www.elode.com.sg
Muralidhara HS, Chauhan SP (1988) Electro-acoustic dewatering (EAD) a novel approach for food processing and recovery. Sep Sci Technol 23:2143–2158
Muralidhara HS, Hampel H, Kroening H (1988) Dewatering of Hamburg’s dredged material by electroacoustic dewatering. Dry Technol 6:535–546
Muralidhara HS, Parekh BK, Senapati N (1988b) Solid-liquid separation process for fine particle suspensions by an electric and ultrasonic field. US Pat 4747920
Ensminger D (1988) Acoustic and electroacoustic methods of dewatering and drying. Dry Technol 6:473–499
Ensminger D (1989) Electroacoustic dewatering of sludge. In: Proceedings of the american filtration society’s annual technical conference on filtration and separation. Pittsburgh, PA
Chauhan SP, Kim BC et al (1989) Scale-up of electroacoustic dewatering (EAD) process for food products. In: Proceedings of the summer national AIChE meeting, Philadelphia, Pennsylvania
Heikkinen J, Tuori T, Wakeman RJ et al (2000) Development of deliquoring method enhanced by electric and acoustic fields. In: Proceedings of the 8th world filtration congress, Brighton
Abu-Orf M, Muller CD, Park C, Novak JT (2004) Innovative technologies to reduce water content of dewatered municipal residuals. J Residuals Sci Technol 1:83–91
Chauhan SP, Johnson HW (1990) Scale-up of electroacoustic dewatering of sewage sludges. In: Muralidhara HS (ed) Solid/liquid separation: waste management and productivity enhancement. Battelle, Columbus
Scholes ON (2005) Mechanical thermal expression of lignite: directional dewatering and permeability characteristics. PhD dissertation. Monash University, Clayton, Australia
EMICO Water Technologies-Electro-dewatering: www.ewt-cinetik.com
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Mahmoud, A., Olivier, J., Vaxelaire, J., Hoadley, A.F.A. (2013). Advances in Mechanical Dewatering of Wastewater Sludge Treatment. In: Sharma, S., Sanghi, R. (eds) Wastewater Reuse and Management. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-4942-9_9
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