IMPROVEMENT CONSTRUCTED WETLAND PERFORMANCE FOR REDUCING CONTAMINATION LEVELS IN BAHR EL-BAQAR DRAIN, NORTH EAST OF EGYPT

Document Type : Original Article

Authors

1 Assist. Res. in Drain. Res. Inst., Nat. Water Res. C. (NWRC), Egypt.

2 Prof. Emt. Ag. Eng. Dept., Fac. Ag., Benha U., Egypt.

3 Head of Soil Dept. Fac. Ag., Benha U., Egypt.

4 Assoc. Prof., Ag. Eng. Dept., Fac. Ag., Benha U., Egypt.

5 Prof. Nat. Water Res. C. (NWRC), Egypt.

Abstract

Nowadays, drainage water is being reused to overcome the gap between the amounts of available and water required. Constructed wetlands, whether of free surface flow or subsurface flow, aim among several purposes, at improving the quality of wastewater. However, the recommended discharge of these wetlands which is 2500 m3/day, although could decrease the levels of pollutants in wastewater, yet it might be of interest to increase this discharge to meet the increased demands for water. Also, since the efficiency of the wetland to remove pollutants is dependent, among other factors, on the type of the plant cultivated in the surface flow cells, then trying some different types of plants might be fruitful. Therefore, the current study conducted aims at: (1) Assessing the efficiency of the constructed wetland under lower (1250 m3/day) and higher (5000 m3/day) discharges than the usual (2500 m3/day).  (2)Investigating the use of cattail and papyrus plants in the surface flow cell, compared with the commonly used reed plant..

Keywords

Main Subjects


DRI, Drainage Research Institute (2000), "A Water Quality Survey for Bahr El Baqar Drain September 1999 – February 2000" ARE, Min. Publ. Works and Water Resources: pp 50-90
DRI, Drainage Research Institute (2003), Field Metrological Data of Weather Station at South El Hessanya Plain, El Salam Canal, Unpubl. Data.
DRI, Drainage Research Institute (2005), Third technical report for the integrated water quality and quantity (Jan2005-Dec2005): pp 12-50
EPA.U.S. Environmental Protection Agency (2000). "Constructed Wetlands Treatment of Municipal Wastewaters". EPA/625/R/010, Sept. 2000. Nat. Risk Manag. Res. Laboratory, office of R/D, U.S. EPA, Cincinnati, OH: pp 12-33
Kaseval, M. E. (2004), "Performance of a Subsurface Flow Constructed Wetland in Polishing Per-Treated Wastewater – a Tropical Case Study ", Water Res., Elsevier Publ., Vol. 38, pp.681-687.
MacLaren Engineeres. (1982). "Planners and Scientists Incorporated, Thorne, Stevenson and Kellogg, Atkins Land and water management and Egyptian Technical Consulting Office", Vol. 1, prepared for the ARE and UNDP. Rep. EGY/76/001-07: pp 40 - 45
Mitsch, W. J. and Gosselink J.G. (2000), "Wetland", 3rd. Ed., John Wiley &Sons, N. y: pp 1-5
NAWQAM, 1999 Egypt –Canada, "Inception Report, Vol. 4, DrainageWater Reuse and Pilot Schemes", Cairo, Feb. 1999: pp 1-10
(FAO, 1992 and National Academy of Science-National Academy of Engineering, 1973), ECP 501-2005 pp 24-25
National Water Quality and Availability Management NAWQAM comp-3000 (2007). "Operational Drainage Water Reuse Guidelines” Report No: DR-TE-0410-012-FN pp 13-16
Pat Lane (1992), "Egyptian Engineered Wetlands", A Report (Several Volumes) prepared for the UNDP: pp 2-29
TVA, Tennessee Valley Authority (1999), "Conceptual plan: Lake Manzala Engineered Wetland”, UNDP EGY/93/G31: pp 20-25