Purification effect of non-dynamic cascading bio-filter on domestic sewage in a mountainous village
HAN Yang1,2,3, DONG Zhi-xin1,2, XIAO Qian-ying1,2,3, LU Chuan-hao1,2,3, HU Lei1,2,3, ZHU Bo1,2, WANG Tao1,2
1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; 2. Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, Chengdu 610041, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China
Abstract：The present study investigated the performances of a set of non-power cascade bio-filter system constructed based on the low mountains and hills terrain on rural sewage. A continuous one-year monitoring of the performances of this system had been carried out in the typical rural village in low mountainous areas of the Sichuan Basin. The results showed that the average concentrations of chemical oxygen demand (COD), total nitrogen (TN), ammonium nitrogen (NH4+-N) and total phosphorus (TP) in the rural domestic sewage were 147.33, 32.52, 14.39 and 3.03mg/L, respectively. The average removal efficiencies of COD, TN and TP in the cascading bio-filter were 59.6%, 60.8% and 67.4%, with the multi-stage bio-filter units being 39.1%, 44.1% and 54.1%, respectively. The seasonal reduction rates of TN and TP were in the order of summer (autumn) > spring > winter. Influent concentrations, air temperature, plant biomass and hydraulic loading (HL) were regulators of the purification efficiency. Thus, the low-temperature-resistant plants and rain-sewage separation in the later stage to optimize purifying efficiency and improve the general applicability were recommended to improve domestic sewage purification to protect water environment in mountainous villages of the upper reaches of the Yangtze River.
韩阳, 董志新, 肖乾颖, 陆传豪, 胡磊, 朱波, 汪涛. 无动力级联生物滤池对山区村镇生活污水的净化效果[J]. 中国环境科学, 2021, 41(5): 2232-2239.
HAN Yang, DONG Zhi-xin, XIAO Qian-ying, LU Chuan-hao, HU Lei, ZHU Bo, WANG Tao. Purification effect of non-dynamic cascading bio-filter on domestic sewage in a mountainous village. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(5): 2232-2239.
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