净水技术2023，Vol.42Issue(z2)：65-69,79,6.DOI:10.15890/j.cnki.jsjs.2023.s2.011
曝气方式对活性污泥脱氮除磷效能的影响
Influence of Aeration on Nitrogen and Phosphorus Removal Efficiency of Activated Sludge
摘要
Abstract
With the continuous improvement of effluent standards,a large number of wastewater treatment plants with oxidation ditch as the main process are facing upgrading and renovation issues.This study tested and analyzed the pollutants removal effect,nitrification rate,denitrification potential and phosphorus release potential of the activated sludge in the biochemical section before and after the aeration form transformation.The results showed that the denitrification effect of activated sludge had been improved under the condition of sufficient aeration.The average concentration of ammonia nitrogen in effluent decreased from 2.8 mg/L to 1.2 mg/L,with a decrease of 57.1％,and the average concentration of total nitrogen in effluent decreased from 10.2 mg/L to 8.4 mg/L,with a decrease of 17.6％.The phosphorus release potential increased from 0.5 mg PO43--P/(g VSS·h)to 3.1 mg PO43--P/(g VSS·h),which significantly improved biological phosphorus removal capacity,leading to the total phosphorus concentration in effluent decreased from 0.21 mg/L to 0.15 mg/L.The average concentration of CODCr in the effluent also decreased by 5.2 mg/L.The research indicated that the method of replacing surface aeration with bottom aeration in oxidation ditch greatly improved the overall nitrogen and phosphorus removal ability of activated sludge,and enhanced the removal effect of nitrogen and phosphorus pollutants,which ensured stable and compliant discharge of effluent.关键词
曝气方式/氧化沟/硝化速率/反硝化潜力/释磷潜力Key words
aeration mode/oxidaion dich/nitrification rate/denitrification potential/phosphorus release potential分类
资源环境引用本文复制引用
施昱,胡金财,景婧,华云洁,叶亮,郑凯凯,李激..曝气方式对活性污泥脱氮除磷效能的影响[J].净水技术,2023,42(z2):65-69,79,6.基金项目
城北污水处理厂智能除磷加药控制系统研究(KY202209 （）
