Study on Gravel-Less Perforated Pipe Leach Fields under Different Substrate

Zhi Shuai Wang; Cheng Duan Wang

doi:10.4028/www.scientific.net/AMR.518-523.2006

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 518-523Study on Gravel-Less Perforated Pipe Leach Fields...

Study on Gravel-Less Perforated Pipe Leach Fields under Different Substrate

Abstract:

With hydraulic loading of 3.3cm/d, five kinds of Gravel-less perforated pipe leach field’s experimental equipment (GPPLF) filled with soil or river sand to treat rural sewage were discussed. The results indicated that the optimal combination's average removal efficiencies of COD, turbidity, TP, NH₃-N, and TN were 82.4%, 94.2%, 74.1%, 98.4%, 55.1% respectively. And average effluent COD, turbidity, TP, NH₃-N, and TN were 17.3 mg/L, 3.9 NTU, 0.55 mg/L, 0.36 mg/L, 12.1 mg/L correspondingly. They could reach the requirement of the first degree discharge standards in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002). And contrasted with conventional perforated pipe leach fields, the removal efficiencies of COD, turbidity, TP, NH₃-N, and TN were increased 1.4%, 5.1%, 22.1%, 61.8%, 15.1% accordingly. The removal mechanism analysis of NH₃-N and TN revealed that the low C/N ratio was probably the most important factor for the low removal of TN.

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Advanced Materials Research (Volumes 518-523)

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2006-2010

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https://doi.org/10.4028/www.scientific.net/AMR.518-523.2006

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May 2012

Authors:

Zhi Shuai Wang, Cheng Duan Wang

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Domestic Sewage, Substrate, Subsurface Infiltration

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