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以稻秆为固体碳源处理分散养猪冲洗水的试验研究
引用本文:宋爱红,沈志强,周岳溪,刘珊,肖宇,苗莹.以稻秆为固体碳源处理分散养猪冲洗水的试验研究[J].中国环境科学,2015,35(7):2052-2058.
作者姓名:宋爱红  沈志强  周岳溪  刘珊  肖宇  苗莹
作者单位:1. 长安大学环境科学与工程学院,陕西 西安 710054; 中国环境科学研究院水污染控制技术研究中心,北京 100012; 中国环境科学研究院环境基准与风险评估国家重点实验室,北京 100012
2. 中国环境科学研究院水污染控制技术研究中心,北京 100012; 中国环境科学研究院环境基准与风险评估国家重点实验室,北京 100012
3. 长安大学环境科学与工程学院,陕西 西安,710054
4. 中国环境科学研究院水污染控制技术研究中心,北京 100012; 中国环境科学研究院环境基准与风险评估国家重点实验室,北京 100012; 兰州交通大学环境与市政工程学院,甘肃兰州 730070
基金项目:国家科技支撑计划课题,中国博士后科学基金
摘    要:针对分散养猪废水经厌氧和人工湿地处理后存在C/N低的问题,以廉价的稻秆作为固体碳源和生物膜载体,研究反应器启动阶段运行性能、水力负荷的影响以及污染物沿程去除特性.结果表明NO3--N主要在反应器上部稻秆填充层被去除,去除率超过95%,且无明显NO2--N积累,反硝化速率为0.052mg/(g·h).稻秆本身会浸出释放有机物和氮(主要为NH4+-N),导致运行前期出水COD和NH4+-N高于进水,但仍远低于《畜禽养殖业污染物排放标准》(GB18596-2001)的排放限值,40d后COD逐步降至40mg/L左右.COD和NO3--N可在反应器下部的砖渣填充层被进一步去除.

关 键 词:稻秆  固体碳源  反硝化  分散养猪废水  

Research on treating dispersed piggery rinse water using rice straw as solid carbon source
SONG Ai-hong,SHEN Zhi-qiang,ZHOU Yue-xi,LIU Shan,XIAO Yu,MIAO Ying.Research on treating dispersed piggery rinse water using rice straw as solid carbon source[J].China Environmental Science,2015,35(7):2052-2058.
Authors:SONG Ai-hong  SHEN Zhi-qiang  ZHOU Yue-xi  LIU Shan  XIAO Yu  MIAO Ying
Abstract:Against the low C/N ration in dispersed piggery wastewater after the treatment of anaerobic and constructed wetland, using low-cost rice straw as solid carbon source and biofilm carrier to study the performance in start-up stage, the effect of hydraulic loading and pollutants removal profile along the height of the reactor were investigated. The results showed that the NO3--N was removed mainly in the top layer of the reactor, which filled with rice straw. The removal rate of NO3--N was over 95% and the denitrification rate was 0.052mg/(g·h), the effluent without obvious accumulation of NO2--N, simultaneously. In addition, the COD and NH4+-N of effluent was higher than the influent at the early stage owing to the rice straw itself leaching organic and nitrogen substance (mainly is NH4+-N), but the concentration was still much less than the emission limits of discharge standard of pollutants for livestock and poultry breeding (GB18596-2001). COD reduced to about 40mg/L gradually after forty days. COD and NO3--N can be further removed by the brick slag fill layers in the bottom reactor.
Keywords:rice straw  solid carbon source  denitrification  dispersed piggery wastewater
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