IFAS-MBR工艺在处理农污上的应用

Application of IFAS-MBR Process in the Treatment of Rural Wastewater

目前,农村生活污水处理已经逐渐实现全国性覆盖,尤其在江浙沿海地区推广率更高,各类工艺的应用也趋于成熟。以上海金山地区为例,农村生活污水有机成分较高,其中BOD_(5)/COD_(Cr)≈0.5,具有较好的可生化性;改良微生物培养能力,为细菌提供充足的生长环境,可有效提高整体系统在水质波动较大情况下,能够稳定出水达标的处理效果。存在的问题:来水浓度季节性变化较大,来水水量不稳定,枯水期来水量低于设计水量50%,菌类培养难度大,生化处理段调试难度大。IFAS-MBR工艺对降低农村生活污水中碳氮含量、深度脱氮除磷具有优越性,且具有能耗低、运维简便的综合特性,可以有效对农村生活污水集中处理,并达到排放标准。

At present,rural domestic sewage treatment has gradually achieved national coverage,especially in the coastal areas of Jiangsu and Zhejiang,where promotion rate is higher,and the application of various processes is also becoming mature.Taking Shanghai Jinshan area as an example,the organie composition of rural domestic sewage is relatively high,of which BOD_(5)/C0D_(Cr)≈0.5,which has good biodegradability characteristics.It is comitted to improving the ability of microorganisms to grow,providing a suffi-cient growth environment for bacteria,and effectively improving overall system's water quality.In the case of large fluctuations,the treatment effect of effluent reaching the standard can be stabilized.Existing problems are as follows:the concentration of incoming water changes seasonally,the incoming water quantity is unstable,the incoming water quantity is less than 50%of designed water quantity during dry season.It is difcult to cultivate bacteria,and it is dificult to debug biochemical treatment section.IFAS-MBR process has superiority in reducing the carbon and nitrogen content in rural domestic wastewater and deep nitrogen and phosphorus removal.