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首页> 外文期刊>Journal of Environmental Sciences >Chemical and biological flooculation process to treat municipal sewage and analysis of biological function
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Chemical and biological flooculation process to treat municipal sewage and analysis of biological function

机译：化学和生物絮凝工艺处理城市污水及生物功能分析

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摘要

The pilot-scale experimental apparatus and the procedure of the chemical and biological flocculation process to verify the feasibility in treating Shanghai municipal sewage were introduced in this paper. In addition, the biological function of the process was discussed. The results of optimal running showed that in the reaction tank, the concentration of mixed liquor suspended solid(MLSS) was 2 g/L, hydraulic retention time(HRT) was 35 min, dosage of liquid polyaluminium chloride(PAC) was 60 mg/L, and the concentration of polyacrylamide(PAM) was 0.5 mg/L. The effluent average concentrations of COD_(Cr), TP, SS and BOD_5 were 50 mg/L, 0.62 mg/L, 18 mg/L, and 17 mg/L, respectively. These were better than the designed demand. In addition, the existence of biological degradation in this system was proven by several methods. The removal efficiencies of the chemical and biological flocculation process were 20 percent higher than that of the chemical flocculation process above at the same coagulant dosage. The treatment process under different situations was evaluated on a pilot-scale experiment, and the results provided magnificent parameters and optimal condition for future operation of the plant.
机译：介绍了中试规模的实验设备以及化学和生物絮凝过程的程序，以验证处理上海城市污水的可行性。此外，还讨论了该过程的生物学功能。最佳运行结果表明，在反应罐中，混合液悬浮固体（MLSS）的浓度为2 g / L，水力停留时间（HRT）为35 min，液体聚氯化铝（PAC）的用量为60 mg / L。 L，聚丙烯酰胺（PAM）的浓度为0.5 mg / L。 COD_（Cr），TP，SS和BOD_5的出水平均浓度分别为50 mg / L，0.62 mg / L，18 mg / L和17 mg / L。这些比设计的需求要好。另外，通过多种方法证明了该系统中生物降解的存在。在相同的凝结剂量下，化学和生物絮凝工艺的去除效率比上述化学絮凝工艺的去除效率高20％。通过中试实验评估了不同情况下的处理过程，结果为工厂的未来运行提供了宏伟的参数和最佳条件。

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