渗滤系统对农村生活污水的资源化处理研究

Study on resource treatment of rural domestic sewage by infiltration system

针对农村生活污水带来的环境污染问题,采用改良型渗滤系统对农村生活污水进行资源化处理的实验研究。结果表明,以2 mm石英砂作为填料,并辅以曝气设施的改良型渗滤系统可承受更大的水力负荷,在水力负荷为0.4 m/d的条件下,渗滤系统对COD、SS的平均去除率为95.7%、90.3%,对TP、TN的平均保留率为73.2%和83.4%,出水水质满足GB 5084—2021《农田灌溉水质标准》中生食蔬菜标准的同时可有效保留其中的氮磷元素,对农村生活污水的资源化处理效果良好。

Experimental research on resource utilization of rural domestic sewage using an improved infiltration system to address the environmental pollution caused by rural domestic sewage.The results show that the improved infiltration system using 2 mm quartz sand as filler and supplemented with aeration facilities can withstand greater hydraulic loads.Under the condition of hydraulic load of 0.4 m/d,the average removal rates of COD and SS by the infiltration system are 95.7%and 90.3%,and the average retention rates of TP and TN are 73.2%and 83.4%.The effluent water quality meets the standards for raw vegetables in the GB 5084—2021"Irrigation water quality standards for farmland",while effectively retaining the nitrogen and phosphorus elements,and has a good effect on the resource utilization and treatment of rural domestic sewage.