Study On ABR-Soil Trench System For Treatment Of Rural Domestic Sewage Of The North China Plain Region

With rapid development of rural econon(?), the problem of rural domestic sewage discharge of pollution is becoming more and more serious. Especially in North China, it is lacking effective and economic treatment process and operation parameter for handling rural sewage. The purpose of this paper is studying the suitable treatment technology for rural domestic sewage of North China Plain.The results show that, from the typical rural sewage discharge monitoring The mean value of sewage generated was21.03L·d-1·person-1, pH was6.14, the sewage production coefficients of COD, TAN, TN and TP were7.87g·d-1·person-1,0.581g·d-1·person-1,1.31g·d-1·person-1and0.0662g·d-1·person-1.From the adsorption study for four kinds of filter material of Soil trench. When the adsorption balance, the phosphorus adsorption capacity of activated carbon was0.62mg/g, the phosphorus adsorption capacity of ceramsite was0.41mg/g, the phosphorus adsorption capacity of soil was0.72mg/g, and the phosphorus adsorption capacity of zeolite was0.32mg/g. The ammonia nitrogen adsorption capacity of activated carbon was0.22mg/g, the ammonia nitrogen adsorption capacity of ceramsite was0.42mg/g, the ammonia nitrogen adsorption capacity of soil was0.16mg/g, and the ammonia nitrogen adsorption capacity of zeolite was0.48mg/g.ABR for processing the sewage on the CODcr, TN, TP, NH4+-N average removal rates were45.96%,31.35%,42.11%,29.04%. Soil trench for processing the sewage on CODcr, TN, TP, NH4+-N average removal rates were62.50%,53.12%,66.25%,74.84%. ABR-Soil Trench System for processing the sewage on CODcr, TN, TP, NH4+-N average removal rates were79.54%,74.90%,84.95%,88.80%. The effect of ABR-Soil Trench System is very good in the North China Plain under the condition of low temperature.The paper have the Design of ABR-Soil Trench System for Practice, according to the water quality monitoring and sewage treatment facilities, the ABR-Soil Trench System can remove the CODcr31.8kg, TN4.4kg, TP0.3kg in every year.