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文章摘要
基于污水厂监测数据的反硝化脱氮影响因素分析
Analysis on Influencing Factors of Denitrification based on Monitoring Data from Sewage Plant
  
DOI:
中文关键词: 反硝化脱氮  影响因素  污水处理厂
英文关键词: Denitrification  Influencing factor  Sewage plant
基金项目:安徽省重点研究与开发计划基金资助项目(1804a0802191)
作者单位
司家济 中节能国祯环保节能科技股份有限公司 
张静 中节能国祯环保节能科技股份有限公司 
张辉 中节能国祯环保节能科技股份有限公司 
鲍韬 中节能国祯环保节能科技股份有限公司 
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中文摘要:
      以污水厂长序列运行数据为基础,反推脱氮实际影响因素,开展反硝化脱氮试验。结果表明,在2019年4月前后TN出水平均浓度降低58%;受季节和污水厂升级改造影响,温度由15 ℃升高至25 ℃,混合液悬浮固体质量浓度(MLSS)由4 300 mg/L增至8 000 mg/L,活性污泥成分增加,脱氮效果提升;BOD5/TN和pH值等变化相对稳定,温度、MLSS是影响该污水处理厂反硝化脱氮的主要因素;当反应温度为(25±5)℃,pH值为75±02,MLSS为4 800 mg/L时,反硝化脱氮效果最佳,硝酸盐氮去除率达91%。
英文摘要:
      Based on the long term operation data from a sewage plant,the actual influencing factors of denitrification were studied through denitrification experiments. The results showed that after treatment,the average concentration of total nitrogen in water decreased by 58% around April, 2019. Influenced by seasonal change and the upgrading and rebuilding of the sewage plant, the temperature increased from 15 ℃ to 25 ℃, mixed liquor suspended solids (MLSS) increased from 4 300 mg/L to 8 000 mg/L, the component of activated sludge and the effect of denitrification increased. The changes of BOD5/TN and pH value were relatively stable. Temperature and MLSS were the main factors affecting denitrification. When the reaction temperature was (25±5)℃, pH value was 7.5±0.2,and MLSS was 4 800 mg/L, the denitrification effect was the best, the removal rate of nitrate nitrogen reached 91%.
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