安徽是养殖大县,随着畜牧业“千区万场规范养殖推进工程”的实施,在三年内,生猪年出栏达4000万头,禽类养殖9亿只。由此每年产生畜禽粪便近12亿吨,粪便的化学需氧量排放达510万吨,超过了工业废水和生活污水的排放量。因此,只有对养殖废弃物深度开发才能大幅减少农村面源污染,而推广沼气发电不仅解决了 Anhui is a large aquaculture county. With the implementation of animal husbandry and “1000-acre farms standard aquaculture-promoting project,” within three years, 40 million pigs have been slaughtered and 900 million birds have been farmed. As a result, nearly 1.2 billion tons of livestock and poultry excrement are produced each year, and the chemical oxygen demand of manure is discharged to 5.1 million tons, which exceeds the emission of industrial waste water and domestic sewage. Therefore, only the deep development of breeding waste can significantly reduce rural non-point source pollution, and promoting biogas power generation not only solves