四虎国产精品永久入口,亚洲AV手机在线观看不卡,最近免费中文字幕中文高清,久久99精品久久久久久不卡

Livestock farming

The livestock and poultry breeding industry has developed rapidly. At present, the chemical oxygen demand (COD) of livestock manure produced in China exceeds the sum of industrial wastewater and domestic sewage in China. The treatment of livestock and poultry wastewater is difficult, with high content of COD, SS, NH4+--N, good biodegradability, good sedimentation performance, large changes in water quality and quantity, and The characteristics of pathogenic bacteria and malodor, Amocos uses biological treatment technology to treat livestock and poultry wastewater, and all the indicators of effluent meet the "Emission Standards for Livestock and Poultry Industry Pollutants" (GB18596-2001).