二级接触氧化工艺处理农村生活污水研究

Application of Two-stage Contact Oxidation Process in Rural Domestic Sewage Treatment

二级接触氧化装置是一种厌氧与好氧相结合,去除污水中有机物、氨氮和磷等富营养成分的工艺,可有效解决农村生活污水水量波动大、有机物含量偏高的问题。经过厌氧微生物的水解和好氧池中污水和好氧生物膜的充分接触和降解,对二级接触氧化装置进出水进行取样,对COD、NH_(4)^(+)-N、TP、SS进行数据分析,出水COD、NH_(4)^(+)-N、TP、SS的质量浓度平均分别为73.13 mg/L、10.00 mg/L、1.13 mg/L和7.67 mg/L,去除率分别为68.00%、88.75%、84.33%和59.43%,基本上达到了GB 18918-2002的一级B标准。

The two-stage contact oxidation device is a kind of anaerobic and aerobic combined process to remove organic matter,ammonia nitrogen,phosphorus and other nutrient-rich components in sewage,which can effectively solve the problems of large fluctuation of water volume and high content of organic matter in rural domestic sewage.After anaerobic microbial hydrolysis and aerobic pool wastewater and aerobic biofilm full contact and degradation,the water in and out of the secondary contact oxidation unit was sampled.The data of COD,NH_(4)^(+)-N,TP and SS were analyzed.The average mass concentrations in effluent water are 73.13 mg/L,10.00 mg/L,1.13 mg/L and 7.67 mg/L.The removal rates were 68.00%,88.75%,84.33%and 59.43%.The effluent reaches grade B standard of GB 18918-2002.