Abstract

With the rapid development of China's social economy and the rise of agricultural industrialization, the problem of agricultural non-point source pollution is becoming increasingly prominent. Reducing nitrogen and phosphorus nutrients in agricultural runoff is the key to control agricultural non-point source pollution, and it is also a hot research topic at home and abroad. The traditional methods to remove nitrogen and phosphorus nutrients in agricultural runoff mainly include ecological ditch, ecological buffer zone, and constructed wetland, etc. At present, ecological ditch, ecological buffer zone and constructed wetland are widely used in the treatment of agricultural runoff, while Microbial Fuel Cell (MFC) technology and biofilm-electrode reactor (BER) have gained wide attention in recent years, it is the key technology of agricultural runoff treatment and has been widely recognized in the world. The purpose of this text is to explore the mechanism and technology of nutrient removal from farmland wastewater by in-situ biological treatment.

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