Thermal Engineering

, Volume 65, Issue 2, pp 111–114 | Cite as

Improving the Efficiency of Natural Raw Water Pretreatment at Thermal Power Stations

Water Treatment and Water Chemistry


In the treatment of make-up water for thermal power stations (TPS) and heat networks, raw water from surface water bodies is used. It contains organic and mineral pollutants in the form of particulates or colloids. Coagulation and flocculation are reagent methods for removing these pollutants from water. Chemicals are used to assist in the formation of large structured flakes that are removed easily from water. The Kuibyshev water reservoir was selected as the object of investigation. Basic physical and chemical properties of the raw water are presented. The application of various coagulating agents, their mixtures in different proportions, and flocculating agents for clarifying the Volga water was examined. The required dose of a coagulant or flocculant was determined based on test coagulation of the treated water. Aluminum sulfate and iron (III) chloride were used a coagulant, and Praestol 2500 (nonionic) as a flocculant. A method of enhancement of coagulation and flocculation by injecting air into the treated water is examined. The results of experimental investigation of the effect of water treatment method on water quality indices, such as alkalinity, pH, iron content, suspended material content, and permanganate value, are presented. It is demonstrated that joint use of ironand aluminum containing coagulation agents brings the coagulation conditions closer to the optimum ones. Aeration does not affect the coagulation process. The methods for supplying air to a clarifier are proposed for practical implementation.


water treatment coagulants flocculants water pretreatment enhancement aeration 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    E. S. Dremicheva and N. K. Laptedul’che, “Influence of natural water composition on corrosion of thermal and mechanical equipment,” Voda: Khim. Ekol., No. 1, 134–137 (2013).Google Scholar
  2. 2.
    E. N. Bushuev, N. A. Eremina, and A. V. Zhadan, “The analysis of modern technologies of water treatment on thermal power plants,” Vestn. IGEU (Ivanovo), No. 1, 8–14 (2013).Google Scholar
  3. 3.
    L. A. Rikhter, E. P. Volkov, and V. N. Pokrovskii, Protection of Water Basins and Airsheds from Emissions of Thermal Power Plants: Textbook for Institutions of Higher Education, Ed. by P. S. Neporozhnyi (Energoizdat, Moscow, 1981) [in Russian].Google Scholar
  4. 4.
    S. V. Yakovlev, Ya. A. Karelin, Yu. M. Laskov, and Yu. V. Voronov, Water Treatment Systems of Industrial Enterprises (Stroiizdat, Moscow, 1969) [in Russian].Google Scholar
  5. 5.
    M. G. Zhurba, Zh. M. Govorova, L. V. Gandurina, O. B. Govorov, and M. V. Elyukov, “Intensification of low-turbidity color water treatment in a sludge blanket clarifier (part 1),” Vodosnabzh. Sanit. Tekh., No. 4, 28–35 (2012).Google Scholar
  6. 6.
    M. G. Zhurba, “Physico-chemical aspects of low-turbidity color water treatment processes in the sludge blanket. Part 1,” Voda: Khim. Ekol., No. 9, 23–31 (2012).Google Scholar
  7. 7.
    M. V. Rotermel’, D. Yu. Buchel’nikov, T. I. Krasnenko, and T. P. Sirina, “Sludge of chemical water treatment: Composition, properties and aspects of recycling,” Tekhnosfernaya Bezop., No. 1(2), 65–67 (2014).Google Scholar
  8. 8.
    R. Sh. Valeev and I. G. Shaikhiev, “The method for the use of water treatment sludge waste in construction materials using the KMK-OK superplastificator,” Vestn. Kazan. Tekhnol. Univ. 15 (12), 74–75 (2012).Google Scholar
  9. 9.
    L. A. Nikolaeva, Doctoral Dissertation in Engineering (Kazan State Technical Univ., Kazan, 2017).Google Scholar
  10. 10.
    O. I. Martynova, “Some patterns of the removal of organic admixtures of natural waters by coagulation,” in Materials of the Water Treatment Section of the Moscow Branch of the Scientific Engineering and Technical Society of Power Engineers, Ed. by M. S. Shkrob (Gosenergoizdat, Moscow, 1955) [in Russian].Google Scholar
  11. 11.
    L. A. Nikolaeva and E. N. Borodai, “Influence of Silox as a flocculant on the coagulation during Volga water treatment,” Energosberezhenie Vodopodgot., No. 6, 10–11 (2009).Google Scholar
  12. 12.
    L. A. Nikolaeva and E. N. Borodai, “Studying the coagulation kinetics of Volga water using Silox flocculant,” Energosberezhenie Vodopodgot., No. 5, 12–14 (2010).Google Scholar
  13. 13.
    Water Treatment: Handbook, Ed. by S. E. Belikov (Akva-Term, Moscow, 2007) [in Russian].Google Scholar
  14. 14.
    G. V. Ushakov and A. G. Ushakov, Water Treatment at Thermal Power Facilities: Digital Textbook for Higher School Students (Kemerovo, 2012). Scholar

Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  1. 1.Kazan State Power Engineering UniversityKazanRussia

Personalised recommendations