为探明南阳市规模化养殖场畜禽粪便排放量情况以及评价环境效应，利用2013年统计数据，通过预测估算南阳市规模化养殖场畜禽粪便排泄量，粪便中污染物COD、BOD、NH3N、TP和TN的含量，重金属元素的含量，粪便资源发酵沼气产量潜力。结果表明，南阳市规模化养殖畜禽粪便年排放总量为9.15×10⁹ kg；2.43×10⁸ kg COD，BOD 2.25×10⁸ kg， NH₃-N 1.97×10⁷ kg，TP 1.84×10⁷ kg，TN 4.84×10⁷ kg；Zn 9.09×10⁵ kg，Cu 5.51×10⁵ kg，Cr 6486 kg，Pb 5158 kg，Cd 613 kg，Ni 8857 kg，As 9484 kg，Hg 58.1 kg；年产沼气潜力为2.45×10⁸ m³，其中鸡粪9.22×10⁷ m³，猪粪1.07×10⁸ m³，牛粪3.11×107 m³，羊粪1.46×10⁷ m³。试验研究可为南阳市畜禽规模养殖场治污管理提供决策依据。

To determine the manure excrements of livestock and poultry in large scale farms and their environmental effect in Nanyang, the paper quoted the data in 2013 to estimate the annual output of livestock and poultry, pollutant concentrations of livestock and poultry manure excretions(COD,BOD,NH₃-N, TP, TN), contents of heavy metals(Zn,Cu,Cr,Pb,Cd,Ni,As,Hg)in different types of excretion from large scale farms, the biogas production potential of animal manures,etc. The result showed that the total manure output by the livestock and poultry reached 9.15×10⁹ kg/a, including COD 2.43×10⁸ kg/a, BOD 2.25×10⁸ kg/a, NH₃-N 1.97×10⁷ kg/a, TP 1.84×10⁷ kg/a, TN 4.84×10⁷ kg/a; metal contens of Zn was 9.09×10⁵ kg/a, Cu 5.51×10⁵ kg/a, Cr 6486 kg/a, Pb 5158 kg/a, Cd 613 kg/a,Ni 8857 kg/a, As 9484 kg/a, and Hg 58.1 kg/a; the biogas production estimated to be 2.45×108 m3/a, among which,9.22×10⁷ m³ by poultry dung; 1.07×10⁸ m³ by pig manure, 3.11×10⁷ m³ by cow dung, 1.46×10⁷ m³  by sheep manure, respectively.