规模化猪场新建厌氧发酵系统对废水有机污染物的处理效应

厌氧发酵系统是目前猪场普遍采用的污水处理技术.选择广东省10个规模化猪场新建厌氧发酵系统开展污水动态监测研究.猪场猪舍污水CODCr和BOD5浓度分别为1 057.6～3 873.7 mg/L和1 847.8～5 515.4 mg/L,厌氧发酵系统出水的CODCr和BOD5浓度分别为266.7～1 420.4 mg/L和534.4～2 490.2mg/L.经过厌氧发酵系统处理后,污水CODCr和BOD5浓度的降幅分别为63.33％～90.09％和54.82％～87.06％.猪场沼气池排水中BOD5/CODCr比值在0.53～0.71之间,有利于后续的好氧生化处理.沼气池排水经鱼塘、氧化塘等处理...

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Published in广东农业科学 Vol. 42; no. 23; pp. 12 - 16
Main Author 余丹妮 周超贤 李盟军 王荣辉 宁建凤 姚建武 艾绍英
Format Journal Article
LanguageChinese
Published 广东省农科院农业资源与环境研究所/农业部南方植物营养与肥料重点实验室/广东省养分资源循环利用与耕地保育重点实验室,广东广州,510640%广东省农业环保与农村能源总站,广东广州,510500 2015
Subjects
五日生化需氧量
化学需氧量
厌氧发酵
猪场
五日生化需氧量
厌氧发酵
化学需氧量
猪场
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Summary:厌氧发酵系统是目前猪场普遍采用的污水处理技术.选择广东省10个规模化猪场新建厌氧发酵系统开展污水动态监测研究.猪场猪舍污水CODCr和BOD5浓度分别为1 057.6～3 873.7 mg/L和1 847.8～5 515.4 mg/L,厌氧发酵系统出水的CODCr和BOD5浓度分别为266.7～1 420.4 mg/L和534.4～2 490.2mg/L.经过厌氧发酵系统处理后,污水CODCr和BOD5浓度的降幅分别为63.33％～90.09％和54.82％～87.06％.猪场沼气池排水中BOD5/CODCr比值在0.53～0.71之间,有利于后续的好氧生化处理.沼气池排水经鱼塘、氧化塘等处理后,最终排出猪场.猪场排水CODCr和BOD5浓度较沼气池均明显降低,10个猪场中有9个猪场排水的CODCr和BOD5浓度均符合畜禽养殖业污染物排放标准,对周边环境的污染风险较小.
Bibliography:anaerobic fermentation; pig farm;BOD5 ; COD_Cr
Anaerobic fermentation technology is widely used to treat piggery sewage. 10 large-scaled pig farms were selected and the organic pollutants in sewage from hoggery and newlybuilt methane tank were monitored dynamically. The value of CODer and BOD5 in hoggery sewage ranged from 1057.6 to 3873.7 mg/L and 1847.8 to 5515.4 mg/L, respectively. In sewage discharged from the methane tank, value of CODcrand BODcr ranged from 266.7 to 1 420.4 mg/L and 534.4 to 2 490.2 mg/L, respectively. The value of CODcr and BOD5 in hoggery sewage reduced 63.33%-90.09% and 54.82%-87.06%, respectively, as treated by anaerobic fermentation system. The ratio of BODJCODcr in sewage of methane tank was 0.53-0.71, which facilitated the subsequent aerobic treatments. Sewage discharged from the methane tank received further treatment by the fish pond and oxidation pond and then discharged out of the pig farm. The concentrations of COD and nOD in effluent of pig farm increased significantly compa
ISSN:1004-874X