Analysis of the influence of free ammonia on the accumulation of nitrite in the nitrite nitrification system  

作　　者：WEI Chen 

机构地区：[1]Civil Engineering＇s Postdoctoral Center of Chongqing University, Chongqing 400030, China [2]College of Civil Construction Engineering of Guizhou University, Guiyang 550003, China

出　　处：《Chinese Journal Of Geochemistry》2009年第4期440-444,共5页中国地球化学学报

基　　金：supported by Guizhou Science and Technology Fund Project 2008-2236;the Scientific and Technological Project under Science and Technology Department of Guizhou Province [SZ(2008)3073];Guizhou University’s Scientific Research Personnel Introduction Pro-gram 2008-029

摘　　要：Low and high-concentration nitric wastewater can induce stable nitrite accumulation and realize the nitrification system, with the nitrite accumulation rate between 50% and 90%. In the low-concentration nitrite nitrification system, the average FA concentrations during the period of stable nitrite accumulation remained at 7 to 10 mg/L. In the high-concentration nitrite nitrification system, the nitrogen oxidation activity will not be affected by biomass, the nitrite oxidation activity is related to the system biomass, it is recommended to be measured by FA/MLSS. Keeping the FA sludge load below 0.1 is the precondition of making good nitrite accumulation and nitrogen degradation rate. Nitrite oxidation bacteria cannot be totally eliminated or washed out from the system.Low- and high-concentration nitric wastewater can induce stable nitrite accumulation and realize the nitrification system, with the nitrite accumulation rate between 50% and 90%. In the low-concentration nitrite nitrification system, the average FA concentrations during the period of stable nitrite accumulation remained at 7 to 10 mg/L. In the high-concentration nitrite nitrification system, the nitrogen oxidation activity will not be affected by biomass, the nitrite oxidation activity is related to the system biomass, it is recommended to be measured by FA/MLSS. Keeping the FA sludge load below 0.1 is the precondition of making good nitrite accumulation and nitrogen degradation rate. Nitrite oxidation bacteria cannot be totally eliminated or washed out from the system.

关 键 词：亚硝酸盐积累 亚硝化 系统 游离氨 亚硝酸盐氧化细菌 高浓度废水 亚硝酸盐含量 亚硝酸盐氮 

分 类 号：X703[环境科学与工程—环境工程] X703.1