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Combined Process of Anaerobic /trickling biofilter /Constructed Wetlands for Treatmeat of Rural Domestic Sewage

Gui Shuang-li

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Abstract

The combined process of anaerobic / trickling biofilter and constructed wetlands was used to treat the rural domestic sewage of He tou village,Xin'gan County,and the contaminant removal efficiency of the combined process and the contributing ates of each process for contaminant removal were investigated. The results showed that the jet oxygenation trickling biofilter contributed greatly to the removal of COD and NH+4-N. The constructed wetland contributed greatly to the removal of TN and TP. Anaerobic tank as pretreatment unit can reduce the processing load of subsequent unit. The combined process of the three unit can make the rural domestic sewage discharge stability. The removal rates of of the combined process for COD,NH+4-N,TN and TP are 0. 14% 、91. 43% 、91. 7%and 94. 58%.

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What this paper is about

The combined process of anaerobic / trickling biofilter and constructed wetlands was used to treat the rural domestic sewage of He tou village,Xin'gan County,and the contaminant removal efficiency of the combined process and the contributing ates of each process for contaminant removal were investigated. The results showed that the jet oxygenation trickling biofilter contributed greatly to the removal of COD and NH+4-N. The constructed wetland contributed greatly to the removal of TN and TP. Anaerobic tank as pretreatment unit can reduce the processing load of subsequent unit. The combined process of the three unit can make the rural domestic sewage discharge stability. The removal rates of of the combined process for COD,NH+4-N,TN and TP are 0. 14% 、91. 43% 、91. 7%and 94. 58%.

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Available abstract

The combined process of anaerobic / trickling biofilter and constructed wetlands was used to treat the rural domestic sewage of He tou village,Xin'gan County,and the contaminant removal efficiency of the combined process and the contributing ates of each process for contaminant removal were investigated. The results showed that the jet oxygenation trickling biofilter contributed greatly to the removal of COD and NH+4-N. The constructed wetland contributed greatly to the removal of TN and TP. Anaerobic tank as pretreatment unit can reduce the processing load of subsequent unit. The combined process of the three unit can make the rural domestic sewage discharge stability. The removal rates of of the combined process for COD,NH+4-N,TN and TP are 0. 14% 、91. 43% 、91. 7%and 94. 58%.

Key concepts: Biofilter, Trickling filter, Environmental science, Sewage, Nitrification, Anaerobic exercise, Pulp and paper industry, Environmental engineering

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