NATURAL SYSTEMS FOR WASTEWATER TREATMENT 745
Cost Cost is often a significant factor in selecting the type of
treatment system for a particular application. Unfortunately,
the availability of reliable cost data for wetland treatment
systems is limited. The cost of wetland treatment systems
varies depending on wastewater characteristics, the type of
wetland system, and the type of bottom preparation required.
Subsurface flow systems are generally more expensive
than free water surface systems. It has been reported that
the Tennesee Valley Authority (TVA) wetland construc-
tion costs ranged from $3.58/m^2 to $32.03/m^2.^22 Estimates
are that the construction, operation, and maintenance costs
of constructed wetland systems are quite competitive with
other wastewater treatment options.
REFERENCES
- Mitsch, W.J. and J.G. Gosselink, Wetlands, Van Nostrand and Reinhold
Company, New York, 1993. - Reed, S.C., E.J. Middlebrooks, and R.W. Crites, Natural Systems for
Waste Management and Treatment, McGraw-Hill, Inc., New York, NY,
1988. - Qasim, S.R., Wastewater Treatment Plants: Planning, Design, and
Operation, Technomic Publishing Company, Inc. PA, 1994. - Middlibrooks, E.J., C.H. Middlebrooks, J.H. Reynolds, G.Z. Watters,
S.C. Reed, and D.B. George, Wastewater Stabilization Lagoon Design,
Performance and Upgrading, Macmillan Book Co., New York, 1982. - US Environmental Protection Agency, Process Design Manual for
Land Treatment of Municipal Wastewater, Office of Water Program
Operation, EPA/COE/USDA, EPA 625/1-77-008, October 1977. - Sanks, R.L. and T. Asano (Eds.), Land Treatment and Disposal of
Municipal and Industrial Wastewater, Ann Arbor Science Publisher,
Ann Arbor, Mich. 1976. - Metcalf and Eddy, Inc., Wastewater Engineering: Treatment, Disposal
and Reuse, McGraw-Hill, Inc., New York, NY, 1991. - Bastian, R.K. and S.C. Reed (Eds.), Aquaculture Systems for Waste-
water Treatment: Seminar Proceedings and Engineering Assessment,
US Environmental Protection Agency, Office of Water Program Opera-
tions, Municipal Construction Division, EPA 430/9-80-006, Washing-
ton, D.C. 20460, September 1979. - Hammer, D.A., Constructed Wetlands for Wastewater Treatment, Lewis
Publishers, Ann Arbor, Michigan, 1989. - Water Pollution Control Federation, Natural Systems for Wastewater
Treatment, Manual of Practice No. FD-16, Water Pollution Control
Federation, 1990.
11. Dinges, R., Natural Systems for Water Pollution Control, Van Nostrand
and Reinhold Company, New York, 1982.
12. Reed, S.C., Constructed Wetlands for Industrial Wastewaters, Presented
at Purdue Industrial Waste Conference, May 10, 1993, Purdue University,
West Lafayette, IN.
13. Moshiri, G.A., Constructed Wetlands for Water Quality Improvement,
Lewis Publishers, Florida, 1993.
14. US Environmental Protection Agency, Subsurface Flow Constructed
Wetlands Conference, Proceeding of a conference at University of
Texas at El Paso, August 16 and 17, El Paso Texas, 1993.
15. Stephenson, M., G. Turner, P. Pope, J. Colt, A. Knight, and G. Tcho-
banoglous, The Use and Potential of Aquatic Species for Wastewater
Treatment, Appendix A, The Environmental Requirements of Aquatic
Plants, Publication No. 65, California State Water Resources Control
Board, Sacramento, California, 1980.
16. Tchobanoglous, G., Aquatic Plant Systems for Wastewater Treatment:
Engineering Considerations, in Aquatic Plants for Water Treatment and
Resource Recovery. K.R. Reedy and W.H. Smiths, Eds. Magnolia Pub-
lishing, Orlando, FL, 1987, pp. 27–48.
17. US Environmental Protection Agency, Subsurface Flow Constructed
Wetlands for Wastewater Treatment — A Technology Assessment, Office
of Water, EPA 832R-93-001, July 1993.
18. Cueto, A.J., Development of Criteria for the Design and Construction of
Engineered Aquatic Treatment Units in Texas, Chapter 9, Constructed
Wetlands for Water Quality Improvements, G.A. Moshiri, Lewis Pub-
lishers, FL 1993, pp. 99–105.
19. Hammer, D.A., B.P. Pullin, and J.T. Watson, Constructed Wetlands for
Livestock Waste Treatment, National Nonpoint Conference, St. Louis,
MO, April 1989.
20. US Environmental Protection Agency, Design Manual on Constructed
Wetlands and Aquatic Plant Systems for Municipal Wastewater Treat-
ment, Office of Research and Development, Center for Environmental
Research Information, Cincinnati, OH, September 1988.
21. Brix, H., Treatment of Wastewater in the Rhizosphere of Wetland
Plants—The Root-Zone Method, Water Science Technology, Vol. 19,
1987, pp. 107–118.
22. Brodie, G.A., D.A. Hammer, and D.A. Tomljanovich, Constructed
Wetlands for Acid Drainage Control in the Tennessee Valley, in Mine
Drainage and Surface Mine Reclamation, Bureau of Mines Information
Circular 9183, 1988, pp. 325–331.
MOHAMMED S. KAMAL
SYED R. QASIM
The University of Texas at Arlington
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