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大型集约化猪场的建设为城市居民的生活提供了丰富的肉食品，并成为联系城乡经济发展的纽带。然而，在猪场生产过程中，伴随而来了许多“代谢废物”。这就是逐步增加的向环境中大量排放的猪粪尿及其废水。产生的猪粪尿如得不到很好的处理和消纳，势必产生环境问题。可喜的是，
The construction of large-scale intensive pig farms has provided rich meat products to the lives of urban residents and has become a link linking the economic development of urban and rural areas. However, there are many “metabolic wastes” that accompany the production of pig farms. This is a step-by-step increase in the excretion of pig manure and its effluents into the environment. The pig manure generated if not properly handled and absorbed, it is bound to produce environmental problems. The good news is,