以厨余发酵液为A/O-DMBR碳源处理生活污水  

A/O-DMBR in Wastewater Treatment Using Fermentation Liquid of Food Waste (FLFW) as External Carbon Sources

作　　者：吴亚南[1,2] 王晓昌 唐嘉陵[1,2] 于真真 胡以松[1,2] 

机构地区：[1]西安建筑科技大学环境与市政工程学院西北水资源与环境生态教育部重点实验室,陕西西安710055 [2]国家城市非传统水资源开发利用国际科技合作基地,陕西西安710055

出　　处：《中国给水排水》2017年第19期68-72,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2013ZX07310-001);国家自然科学基金资助项目(51508450);中国博士后科学基金资助项目(2015M582760XB)

摘　　要：利用厨余发酵液作为A/O-DMBR系统的外增碳源处理生活污水,分析投加碳源后A/O-DMBR系统的脱氮除磷性能及膜污染特性。结果表明,投加厨余发酵液作为碳源能明显提高反应器脱氮除磷效率,强化厌氧池反硝化及释磷过程,厌氧池中NO_3^--N由12.26 mg/L降低至0.27 mg/L,PO_4^(3-)-P由2.5 mg/L增加至3.5 mg/L,NH_4^+-N、TN、TP的去除率分别达到了98%、75.9%、86%。投加发酵液后,污泥相对疏水性(RH)由76.5%降低至58%,比耗氧速率(SOUR)及EPS含量变化不大,虽然增加了动态膜的形成时间,但对动态膜的膜污染过程影响不大。The fermentation liquid of food waste （FLFW） was applied as an external carbon source to A/O - DMBR to explore the effects on nitrogen and phosphorus removal and membrane fouling. Results demonstrated that by adding FLFW, the efficiency of nitrogen and phosphate removal was im- proved, and the denitrification and PO4^3- - P release in anaerobic tank were both enhanced significantly. The concentration of NO3- - N decreased from 12.26 mg/L to 0.27 mg/L and that of PO4^3- - P increased from 2.5 mg/L to 3.5 mg/L in the anaerobic tank with the addition of FLFW; moreover, the removal efficiencies of NH4^＋ - N, TN and TP achieved 98% , 75.9% and 86% , respectively. The EPS and specific oxygen utilization rate （SOUR） of the activated sludge in the membrane tank increased slightly, while the relative hydrophobicity （RH） decreased from 76.5% to 58%, after FLFW was added. The formation time of the dynamic membrane was increased ; however, the influence on membrane fouling by adding the FLFW was minimal.

关 键 词：A/O—DMBR 厨余发酵液 脱氮除磷 膜污染 

分 类 号：X799.3[环境科学与工程—环境工程]