Abstract
On-site treatment of wastewater at highway rest areas poses some unique and difficult challenges because of the rural locale, high variability in wastewater flow rate and strength, and lack of knowledgeable personnel on-site. As a potential alternative, a constructed subsurface wetland system was built at the I-70 rest stop nearby Greenfield, Indiana, in 2003. This wetland system, mainly composed of three wetland cells, also includes draw-and-fill and recirculation mechanisms to increase oxygen transfer to the wastewater and improve the overall treatment performance. This study summarizes the project experience after several years of system operation. Special considerations for highway rest areas have been emphasized. A dynamic hydraulic model was developed to help characterize the flows in the system and estimate the hydraulic retention time. The size of the Greenfield wetland was found to be sufficient in providing pretreatment that could help avoid potential surcharge from the local treatment plant, but was inadequate for direct on-site discharge. Though the draw-and-fill and recirculation mechanisms provided some treatment benefits, they raised the construction costs and maintenance needs. Constructed wetlands have been described as low-maintenance systems compared to other conventional wastewater treatment approaches, but proper maintenance of the wetland facilities was found to be a key factor in achieving good performance. Since wetland systems in highway rest areas have not been studied, this study expects to provide useful information for possible future implementation of such systems.
Similar content being viewed by others
References
APHA (1998) In: Clesceri LS, Greenberg AE, Eaton AD (eds) Standard methods for the examination of water and wastewater. American Public Health Association, Washington
Behrends L, Houke L, Bailey E, Jansen P, Brown D (2001) Reciprocating constructed wetlands for treatment of industrial, municipal and agricultural wastewater. Water Sci Technol 44(11–12):399–405
Chan TP, Jain V, Cooper TJ, Alleman JE, Govindaraju RS (2004) Wastewater treatment using constructed wetlands in highway rest areas: A demonstration project at I-70 near Greenfield, IN. World Water and Environmental Resources Congress 2004, Salt Lake City, UT. doi:10.1061/40737(2004)309
Chan TP, Shah NR, Cooper TJ, Alleman JE, Govindaraju RS (2005) Enhancing oxygen transfer in subsurface-flow constructed wetlands. World Water and Environmental Resources Congress 2005, Anchorage, AK. doi:10.1061/40792(173)307
Crites R, Tchobanoglous G (1998) Small and decentralized wastewater management systems. McGraw-Hill, Boston
Isaaks EH, Srivastava RM (1989) An introduction to applied geostatistics. Oxford University Press, NY
Haberl R, Perfler R, Mayer H (1995) Constructed wetlands in Europe. Water Sci Technol 32(3):305–315
Hammer DA (1997) Creating freshwater wetlands. CRC, Boca Raton
Huang J, Reneau Jr RB, Hagedorn C (2000) Nitrogen removal in constructed wetlands employed to treat domestic wastewater. Water Res 34(9):2582–2588. doi:10.1016/S0043-1354(00)00018-X
Juwarkar AS, Oke B, Juwarkar A, Patnik SM (1995) Domestic wastewater treatment through constructed wetland in India. Water Sci Technol 32(3):291–294
Kadlec RH, Knight RL (1996) Treatment wetlands. CRC, Boca Raton
Kantawanichkul S, Pilaila S, Tanapiyawanich W, Tikampornpittaya W, Kamkrua S (1999) Wastewater treatment by tropical plants in vertical-flow constructed wetlands. Water Sci Technol 40(3):173–178
Konopka T (2007) Investigation and performance analysis of a subsurface constructed wetland for wastewater treatment at a highway rest area. MS thesis, School of Civil Engineering, Purdue University, West Lafayette, Indiana
Konopka T, Kao S-C, Tripathi S, Cooper TJ, Chan TP, Alleman JE, Govindaraju RS (2008) The I-70 Greenfield rest area wetland projects: Report on interim results (II). Civil Engineering, Purdue University, West Lafayette, IN
Maehlum T, Jenssen PD, Warner WS (1995) Cold climate constructed wetlands. Water Sci Technol 32(3):95–101
Maehlum T, Stalnacke P (1999) Removal efficiency of three cold climate constructed wetlands treating domestic wastewater: Effects of temperature, seasons, loading rates and input considerations. Water Sci Technol 40(3):273–281
Mbuligwe SE (2005) Applicability of a septic tank/engineered wetland coupled system in the treatment and recycling of wastewater from a small community. Environ Manag 35(1):99–108. doi:10.1007/s00267-003-0174-3
Neralla S, Weaver RW, Lesikar BJ, Persyn RA (2000) Improvement of domestic wastewater quality by subsurface flow constructed wetlands. Bioresource Technol 75(1):19–25. doi:10.1016/S0960-8524(00)00039-0
Ranieri E (2003) Hydraulics of sub-superficial flow constructed wetlands in semiarid climate conditions. Water Sci Technol 47(78):49–55
Schaad DE, Chambers WB, Halley JM, Denson S (2008) Design and performance of multipurpose constructed wetland and flow equalization basin. J Environ Eng 134(2):118–125. doi:10.1061/(ASCE)0733-9372(2008)134:2(118)
Steer DN, Fraser LH, Seibert BA (2005) Cell-to-cell pollution reduction effectiveness of subsurface domestic treatment wetlands. Bioresource Technol 96:969–976. doi:10.1016/j.biortech.2004.08.006
Sultana R (2006) Hydrologic performance evaluation of a wetland complex. MS thesis, School of Civil Engineering, Purdue University, West Lafayette, Indiana
Sultana R, Kao S-C, Konopka T, Tripathi S, Chan TP, Cooper TJ, Alleman JE, Govindaraju RS (2007) The I-70 Greenfield rest area wetland projects: Report on interim results. Civil Engineering, Purdue University, West Lafayette, IN
Sundaravadivel M, Vigneswaran S (2001) Constructed wetlands for wastewater treatment. Crit Rev Env Sci Tech 31(4):351–409. doi: 10.1080/20016491089253
US EPA (1988) Design manual: Constructed wetlands and aquatic plant systems for municipal wastewater treatment. EPA Office Research and Development, Cincinnati. EPA/625/1-88/022, US
US EPA (2000) Manual: Constructed wetlands and treatment of municipal wastewaters. EPA Office Research and Development, Cincinnati. EPA/625/R-99/010, US
Wieder RK, Tchobanoglous G, Tuttle RW (1989) Preliminary considerations regarding constructed wetlands for wastewater treatment. In: Hammer DA (ed) Constructed wetlands for wastewater treatment—municipal, industrial, and agricultural. Lewis, MI, pp 297–305
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kao, SC., Chan, T.P., Sultana, R. et al. Hydrologic and Environmental Performance of a Subsurface Constructed Wetland at a Highway Rest Area: A Case Study. Water Expo. Health 1, 35–48 (2009). https://doi.org/10.1007/s12403-009-0004-9
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12403-009-0004-9