城市住宅小区生活污水回用技术

TECHNOLOGY OF DOMESTIC SEWAGE REUSE IN URBAN COMMUNITIES

针对城市住宅小区生活污水,采用化粪池+A/O法+臭氧处理工艺进行实验,通过污泥的培养、A/O法处理前后以及臭氧处理后COD的测定等实验研究,讨论分析pH值、进水浓度、曝气时间以及臭氧投加量等因素对COD的去除效果的影响。研究结果表明,在曝气时间为6h,进水COD浓度在400～500mg/L之间,此时实验效果最好,出水达到国家《生活杂用水水质标准》(CJ/T48-1999)。该小区生活污水处理工艺具有投资小、能耗低、处理效果好等特点。

Aiming at the treatment of the domestic sewage in urban communities, the process of septic tank+A/O method+ ozone oxidation was adopted. Through experimental research of sludge cultivation, determination of COD before and after treatment by A/O method and ozone oxidation, the effect of pH value, initial concentration, aeration time, and ozone capacity on COD removal was analyzed. The experiment results showed that the effect was the best when aeration time was 6h, and initial COD concentration was 400～500mg/L. the quality of the effluent can meet the 'Miscellaneous Domestic Water Quality Standard(CJ25.1-89)'. The treatment process for the domestic sewage from urban communities has the advantages of less investment, lower consumption of energy and better treatment effect.