一种新型滤料在循环养殖水处理中的应用
Application of a new plastic filter in treatment of aquaculture water for reuse
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摘要: 实验研究了填充新型无剩余污泥悬浮型生物滤料的曝气生物滤池处理养殖废水的挂膜情况及水力停留时间（HRT）变化对曝气生物滤池处理效果及运行特性的影响。结果表明，含氨氮和亚硝酸氮浓度较高的模拟养殖污水用活性污泥挂膜，大约1个月就能使生物滤池启动。当模拟养殖污水氨氮起始浓度在2 mg/L左右时最佳水力停留时间（HRT）为0.6 h循环6 d能使氨氮浓度降到0.03 mg/L左右，亚硝酸氮有短期积累问题，但最终都能被降到0.05 mg/L以下。水力停留时间影响氨氮的去除时间，从而影响亚硝酸氮的积累。水力停留时间（HRT）对有机物（CODMn）去除影响不大，且该种滤料对有机物（CODMn）去除效果较差，去除率在28%左右。
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关键词:
- 新型生物滤料 /
- 循环养殖水处理 /
- 水力停留时间（HRT） /
- 曝气生物滤池
Abstract: Biological aerated filter(BAF) packed with new suspension plastic filter was used for treatment of aquaculture water for reuse,and the establishment of its function and the hydraulic retention time（HRT） how to affect its treatment effect were investigated. The result shows that activate sludge cultivated the BAF filled in simulation culture wastewater, it only takes about one month to establish the BAF function, and that condition of HRT 0.6 h, as well as the influent NH4-N being 1.98 mg/L is the best of the three HRTs. The biofilter system circulated six days can make the influent NH4-N come down to 0.03 mg/L.The nitrite-N has a short time accumulation, but also can be dropped to 0.05 mg/L at last. HRT affect the removal of NH4-N, and then affect the removal of nitrite-N. The removal of CODMn is affected insignificantly by HRT, and the removal rate of CODMn is about 28% in this system. -
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