环境工程学报2026，Vol.20Issue(2)：426-438,13.DOI:10.12030/j.cjee.202505087
组合式土壤渗滤系统处理农村厕所黑水的性能评估
Performance evaluation of an integrated soil infiltration system for treating rural toilet blackwater
摘要
Abstract
Toilet-discharged blackwater is characterized by high dispersity and elevated pollutant concentrations.To address the environmental pollution caused by rural toilet blackwater,this study developed a soil infiltration system utilizing substrate combinations for blackwater treatment.The adsorption efficiency of single substrates for nitrogen,phosphorus,and COD(chemical oxygen demand)was first investigated.Subsequently,the pollutant removal performance of soil infiltration systems with different substrate combinations was evaluated.The optimal combination,determined as a 1:1:1 volume ratio of soil,biochar,and fly ash ceramsite,was selected for further treatment studies under varying nitrogen loads.The results demonstrated that the constructed soil infiltration system achieved average removal rates of 97.42％for NH4+-N(ammonium nitrogen),96.21％for TN(total nitrogen),84.08％for TP(total phosphorus),and 92.86％for COD.When the NH4+-N concentration in the influent ranged from 90 to 260 mg·L-1,the effluent concentration remained relatively stable,and nitrogen removal efficiency improved.Meanwhile,the concentrations of TP and COD in the effluent tended to decrease.The effluent quality from all treatment groups met or exceeded the Class III standards specified in the"Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants"(GB 18918-2002).The soil infiltration system effectively reduces pollutant concentrations in rural toilet blackwater,demonstrating significant potential for improving rural environments and promoting sustainable agricultural development.关键词
黑水处理/土壤渗滤系统/基质组合/污染物去除/农村厕所Key words
blackwater treatment/soil infiltration system/substrate combination/pollutant removal/rural toilets分类
资源环境引用本文复制引用
李丹阳,张爱琴,张伟漫,贾懿曼,舒上毅,季姝旭,王惠惠,丁京涛,沈玉君,范盛远,周亚文,乌日拉格..组合式土壤渗滤系统处理农村厕所黑水的性能评估[J].环境工程学报,2026,20(2):426-438,13.基金项目
农业农村部规划设计研究院自主研发项目(QX202423) （QX202423）
