UASBB厌氧氨氧化反应器处理污泥脱水液的影响因素研究  

Influencing Factors of Sludge Liquor Treatment in UASBB

作　　者：李亚峰[1] 马晨曦[1] 张驰[1] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,沈阳110168

出　　处：《环境科学》2014年第8期3044-3051,共8页Environmental Science

基　　金：国家自然科学基金项目(51108277);住房和城乡建设部科技攻关项目(2011-K7-8);辽宁省教育厅项目(L2012203);格平绿色助学行动辽宁环境科研-123工程资助项目;辽宁省大学生创新创业训练计划项目(201210153025)

摘　　要：研究基质质量浓度、温度、pH值、HRT和C/N比对厌氧氨氧化脱氮性能的影响.试验水样采用污泥脱水液,控制进水ρ(NH+4-N)/ρ(NO-2-N)为1∶1.32,分别考察了在不同基质质量浓度、HRT、温度、pH值和C/N比的情况下,UASBB厌氧氨氧化反应器的脱氮性能.结果表明,在进水NH+4-N和NO-2-N质量浓度分别为200 mg·L-1和264 mg·L-1、HRT=24 h、温度为30～35℃、pH值为7.5～8.5、C/N比在0.5左右的条件下,厌氧氨氧化反应器的脱氮效果最佳,NH+4-N、NO-2-N和TN平均去除率分别达到75.72%、76.36%和70.19%,TN平均容积负荷可达0.464 kg·(m3·d)-1,COD平均去除率在30%左右.通过合理控制进水基质质量浓度和HRT能够有效地提高厌氧氨氧化反应器的脱氮性能.只有在适宜的温度和pH值范围内,厌氧氨氧化菌才能表现出较高的活性.当进水添加有机物时,厌氧氨氧化反应器中存在反硝化现象,且随着有机物质量浓度的升高,异养反硝化菌的竞争优势逐渐增强,对厌氧氨氧化产生明显的抑制作用.The effect of ammonia nitrogen concentration,temperature,pH,HRT and C/N ratio on ANAMMOX was studied. The reactor was fed with sludge liquor. The efficiency of nitrogen removal for the UASBB was researched under different ammonia nitrogen concentration,HRT,temperature,pH and C/N ratio when the influent ρ（NH4^＋-N）/ρ（NO2^--N） was controlled at 1∶ 1. 32. The results showed that the nitrogen removal rate for the ANANMMOX reactors was optimal when the influent NH4^＋-N and NO2^-2-N concentrations were 200 mg·L^-1and 264 mg·L^-1,HRT was 24 h,temperature was in the range of 30-35℃,pH was at 7.5-8.5 and the C/N ratio was 0. 5. The average removal rates of NH4^＋-N,NO2^--N and TN were 75. 72%,76. 36% and 70. 19%,respectivley,the average TN was 0. 464 kg·（m^3·d）^-1 1and the removal rate of COD was 30%. The efficiency of nitrogen removal for the ANAMMOX reactors could be enhanced by controlling ammonia nitrogen concentration and HRT. The efficiency of ANAMMOX bacteria was optimal when temperature and pH were suitable. The denitrification occurred in the ANAMMOX reactors when the influent contained organics. The inhibition of denitrification bacteria on the ANAMMOX increased with rising concentration of organics.

关 键 词：厌氧氨氧化 UASBB 污泥脱水液 基质质量浓度 HRT 温度 PH值 C/N比 

分 类 号：X703.1[环境科学与工程—环境工程]