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Conformation of WSFCW and Test of Treatment Domestic Wastewater

Author: LuZuo
Tutor: ZhangBeiPing
School: Huazhong University of Science and Technology
Course: Municipal Engineering
Keywords: Waveform Constructed Wetland Sewage A filler biological unit Plant Ecology unit Progressive water distribution
CLC: X703
Type: Master's thesis
Year: 2005
Downloads: 81
Quote: 0
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Abstract


This article for waveform undercurrent artificial wet land ( Wavy Subsurface Flow Constructed Wetlands ) , respectively filler biological processing unit , wetland plant ecology processing unit and the entire wetland system of low concentrations of living sewage of COD , NH 3 < / sub > - N and TP removal efficiency , and initially examined progressive cloth water purifying effect of wetlands . (1) waveform the Constructed Wetland packing biological unit in the hydraulic loading 0.8m3 / m 2 < / sup> · d better treatment effect of COD removal rate of 50.1% on average , the NH 3 < / sub>-N, TP removal is not ideal , the removal rate of 9.9% and 15.3% , respectively , mainly due to the filler within the biological system is not getting enough oxygen . ( 2 ) Plant Ecology unit selected canna, water bamboo , cattails and rushes , inspected the plant unit summer and autumn of sewage treatment effect : Summer HRT for day 3 plant unit treatment effect in not planting plants control group COD in plant group compared with the control group at 37.6 % , 65.2% NH 3 -N than the control group , TP compared with the control group and 82.6% higher . ( 3 ) waveform undercurrent wetland system in hydraulic loading of 0.8m / m 2 · d , when the plant is growing well average COD removal efficiency of 57.8% , NH 3 -N and TP average removal rate of 24.5 % and 33.7 % , respectively ; the NH 3 - N and TP removal than filler biological unit were increased about 15% plants , indicating that wetland N and P removal have a greater contribution . The test late Fusarium wilt is removed , the indicators removal rate decreased to varying degrees . On this basis , the initial effects of progressive water distribution system to deal with the effect of the test results show that the progressive water distribution system can improve the removal efficiency of TP , but a short period of time on COD and NH 3 the - N removal of the effect was less affected. The waveform the undercurrent of separate filler biological unit to meet the requirements for organics removal shows that the hydraulic loading 0.8m 3 / m 2 · d supplement plant ecology The unit can significantly improve the waveform the undercurrent wet nitrogen and phosphorus removal ; progressive water distribution system and waveform undercurrent of nitrogen and phosphorus removal wetland degradation mechanism needs further study .

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization
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