TREATMENT OF DRAIN WASTEWATER USING CONSTRUCTED WETLANDS IN EGYPTABOU AL-ABBAS E. GALAL, FATMA A. EL-GOHARY, MEDHAT M.A. SALEH, MOHAMED A. EL-KHATEEB, USAMA F. MAHMOUD AND A. MOAWADAbstract The enhancement of drain water quality by constructed wetland systems has been employed in Egypt. In this study the treatment scheme consists of free water surface flow (FWS) followed by floating aquatic plant (FAP) constructed wetlands have been studied. Typha latofolia (cattail) and Water hyacinths plants were used during this study in FWS and FAP, respectively. Effectiveness of the system for the removal of COD, BOD, TSS, ammonia and phosphorus has been investigated extensively. The concentration of COD, BOD, TSS, ammonia and phosphorus was reduced from 115.2, 71.4, 79.4, 4.7 and 1.4 mg/L to 41.8, 13.9, 13.5, 1.8 and 0.5 mg/L, respectively. In most cases the final effluent was complying with the National regulatory standards for treated effluent reuse.
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