UnFied SBR系统处理生活污水脱氮除磷的性能优化  

Optimization Effect of Nitrogen and Phosphorus Removal in UniFed SBR Process for Domestic Wastewater

作　　者：唐旭光[1] 王淑莹[1] 顾升波[1] 彭永臻[1] 

机构地区：[1]北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124

出　　处：《环境科学》2009年第10期2963-2967,共5页Environmental Science

基　　金："十一五"国家科技支撑计划重点项目(2006BAC19B03);北京市教委科技创新平台项目(PXM2008-014204-050843);国家自然科学基金项目(50808004)

摘　　要：采用UniFed SBR工艺试验装置处理低C/N、C/P的实际生活污水,通过改变传统运行模式优化系统的脱氮除磷性能.结果表明,将进水时间由2h延长至3h、4h,在处理无外加任何碳源的生活污水时(C/P=30.18),系统磷平均去除率由59.93%增至88.45%,使出水磷维持在1 mg/L以下.在另一种缺氧-好氧运行模式中,使C/N为2.57的原水中有限有机底物得到充分利用,使出水TIN有了明显的降低,去除率由49.54%提高至60.75%.在缺氧-好氧交替模式运行中,N、P去除效率均有大幅提高,此种运行模式不仅充分利用原水中的有机底物,并在缺氧搅拌段2发生了反硝化吸磷现象,达到了一碳两用的目的,使得在C/N、C/P分别为2.57、30.18并无任何外加碳源的情况下,出水N、P浓度达到国家一级排放标准,适用于低碳源的实际生活污水的处理.Appropriate change of the traditional operation modes was investigated in a UniFed SBR lab-scale apparatus treating actual domestic wastewater with low C/N and C/P.Results showed that when the feed /decant time was extended from 2 h to 3 h and 4 h,the phosphorous removal efficiency increased from 59.93% to 88.45% without any external carbon source.In the mode of anoxic-aerobic condition,TIN of the effluent reduced obviously,the removal efficiency increased from 49.54% to 60.75% for utilizing limited substrate in influents with low C/N=2.57,adequately.In the mode of alternation of anoxic-aerobic condition,the nitrogen and phosphorous removal efficiency increased clearly.The carbon source in the influent can be used adequately and it occurred denitrifying dephosphatation in anoxic segment 2.This mode was optimal for the treatment of actual domestic wastewater with low C/N and C/P.

关 键 词：UniFedSBR系统 脱氮除磷 生活污水 性能优化 

分 类 号：X703.1[环境科学与工程—环境工程]