典型文献
Nitrification performance evaluation of activated sludge under high potassium ion stress during high-ammonia nitrogen organic wastewater treatment
文献摘要：
The recycling reverse osmosis (RO) membrane concentrate of some high-ammonia nitrogen(NH4+-N) organic wastewater to the biological unit could cause potassium ion (K+) accumu-lation,thereby affecting the removal of NH4+-N by activated sludge.Thus,the effects of high K+ stress on activated sludge nitrification performance was studied.The results showed that the high K+ stress promoted the floc sludge to produce more extracellular polymers (EPS),which accelerated the sludge sedimentation and enriched the biomass in sequential batch reactors (SBRs).The ammonia oxidation process and nitrite (NO2-N) oxidation process were further analyzed in the nitrification process.High K+ stress enriched ammonia oxidizing bacteria (AOB),which ensured the efficient ammonia oxidation process in SBRs,and en-sured the removal rate of NH4+-N was maintained above 93％.However,high K+ stress (15g/L KC1) inhibited the activity of NO2-N oxidizing bacteria (NOB) and reduced the abundance of NOB,thus leading to the accumulation of NO2-N,and finally worsened the nitrification performance of activated sludge.In short,the performance of activated sludge will not be inhibited when the K+ in the wastewater does not exceed 5.23 g/L.The results could pro-vide a reference for the optimization of the biological performance in treating high-NH4+-N organic wastewater with activated sludge coupled RO membrane treatment process.
文献关键词：
中图分类号：
作者姓名：
Xiaomei Jiang;Heng Wang;Peike Wu;Hong Wang;Liangwei Deng;Wenguo Wang
作者机构：
Key Laboratory of Development and Application of Rural Renewable Energy,Biogas Institute of Ministry of Agriculture and Rural Affairs,Chengdu 610041,China;Sichuan Academy of Environmental Policy and Planning,Chengdu 610041,China;Institute of Urban Agriculture,Chinese Academy of Agricultural Sciences,Chengdu 6:102:13,China
文献出处：
引用格式：
[1]Xiaomei Jiang;Heng Wang;Peike Wu;Hong Wang;Liangwei Deng;Wenguo Wang-.Nitrification performance evaluation of activated sludge under high potassium ion stress during high-ammonia nitrogen organic wastewater treatment)[J].环境科学学报（英文版）,2022(01):84-92
A类：
Nitrification,SBRs
B类：
performance,evaluation,activated,sludge,under,high,potassium,stress,during,ammonia,nitrogen,organic,wastewater,treatment,recycling,reverse,osmosis,RO,membrane,concentrate,some,NH4+,biological,unit,could,cause,K+,thereby,affecting,removal,Thus,effects,nitrification,studied,results,showed,that,promoted,floc,produce,more,extracellular,polymers,EPS,which,accelerated,sedimentation,enriched,biomass,sequential,batch,reactors,oxidation,process,nitrite,NO2,were,further,analyzed,High,oxidizing,bacteria,AOB,ensured,efficient,maintained,above,However,15g,KC1,inhibited,activity,NOB,reduced,abundance,thus,leading,accumulation,finally,worsened,In,short,will,not,be,when,does,exceed,vide,reference,optimization,treating,coupled
AB值：
0.470459
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