砾间接触氧化技术在乡镇污水处理厂尾水深度处理中的应用

摘要

Using gravel contact oxidation process to treat tail water from township sewage treatment plant, the operation result of the project showed that, gravel contact oxidation could adsorb and degrade pollutants in tail water, the average mass concentrations of ammonia nitrogen and total phosphorus were 0.8 and 0.21 respec﹣tively, which met the quality requirement of surface water standard class Ⅳ, the mass concentration of CODCr in the effluent water was 16 mg/L, which was superior to the quality requirement of surface water standard class Ⅳ. Gravel contact oxidation process could effectively improve the tail water quality of sewage treatment plant so as to realize sewage high standard discharge.%应用砾间接触氧化技术处理乡镇污水处理厂尾水,工程运行结果表明:砾间接触氧化能对尾水中的污染物进一步吸附降解,出水中CODCr、 氨氮、 总磷平均质量浓度分别为16、0.8、0.21 mg/L,氨氮和总磷达到地表水Ⅳ类水标准,CODCr优于Ⅳ类水标准.砾间接触氧化技术可有效提高污水处理厂尾水水质,实现污水处理厂尾水的高标准排放.