北方粪污产沼能源型奶牛养殖场污染物削减核算
发布时间：2019-01-16 06:29
【摘要】：畜禽粪污的处理和污染物总量削减是畜禽养殖业主要关心的环保问题。该文以呼和浩特市某公司为例,通过为期一年的实地调研和监测研究北方地区典型产沼能源型规模化奶牛养殖场COD和氨氮的产排、削减情况。结果表明:(1)泌乳牛粪便、尿液、生产废水产生量共约50 kg/(头·d),在37.8~39℃条件下推流发酵26 d后,沼渣产生量占发酵前干物质的50%,沼液产生量占总发酵物料的73%,沼气产生量约占总发酵物料的1.8%。(2)泌乳牛粪污COD产生系数为1 040.91 g/(头·d),氨氮产生系数为27.27 g/(头·d)。(3)调节池可消减COD 5.90%,消减氨氮8.33%;在37.8~39℃条件下推流发酵26 d后,COD降解了33.84%,氨氮增加了100%;占总产生量19.87%的COD通过沼液回冲牛舍和沼渣作垫料内部消化,其余占总产生量40.17%的COD随剩余沼液还田。
[Abstract]:The disposal of livestock manure and the reduction of the total amount of pollutants are the main environmental problems concerned by livestock and poultry breeding industry. This paper takes a company in Hohhot as an example to study the production and emission reduction of COD and ammonia nitrogen in typical bog energy scale dairy cattle farms in northern China through a year's field investigation and monitoring. The results showed that: (1) the yield of lactation cow dung, urine and production wastewater was about 50 kg/ (the amount of biogas residue was 50% of the dry matter before fermentation after 26 days of pushing fermentation at 37.839 鈩，
本文编号：2409553
[Abstract]:The disposal of livestock manure and the reduction of the total amount of pollutants are the main environmental problems concerned by livestock and poultry breeding industry. This paper takes a company in Hohhot as an example to study the production and emission reduction of COD and ammonia nitrogen in typical bog energy scale dairy cattle farms in northern China through a year's field investigation and monitoring. The results showed that: (1) the yield of lactation cow dung, urine and production wastewater was about 50 kg/ (the amount of biogas residue was 50% of the dry matter before fermentation after 26 days of pushing fermentation at 37.839 鈩，
本文编号：2409553
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