By the biological treatment ,the pig dung can be converted to the organic bio-fentilizer ,the criteria of pollution of pig urine and polluted water will go down greatly.

• 结果表明,该方法可使猪粪变成优质有机生物肥料,猪粪尿污水污染指标大大下降,能较好地改善养猪场的环境问题。