低碳源条件下基于氨氮反馈的AAO调控方案  

AAO regulation scheme based on ammonia nitrogen feedback under low carbon source conditions

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作  者:李贝 陈邦杰 黄如婷 蔡博涵 周爱姣[2] LI Bei;CHEN Bangjie;HUANG Ruting;CAI Bohan;ZHOU Aijiao(Wuhan Urban Drainage Development Co.,Ltd.,Wuhan 430014,China;School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区:[1]武汉市城市排水发展有限公司,武汉430014 [2]华中科技大学环境科学与工程学院,武汉430074

出  处:《给水排水》2023年第3期26-32,共7页Water & Wastewater Engineering

摘  要:为降低出水氨氮波动、降低水厂能耗和提高AAO工艺TN去除率,中部地区某污水处理厂在低碳源条件下采用基于氨氮反馈的调控方案,设定0.5 mg/L的出水氨氮反馈限值以保障氨氮达标,并设置3种曝气量和3种污泥浓度工况进行试验。结果表明,好氧池总曝气量为4 000 m^(3)/h,污泥浓度范围为4 500~5 500 mg/L时,出水氨氮平均为0.1 mg/L,平均TN去除率为62%,出水TN平均浓度低至9.1 mg/L,达到了节能降耗的目标。In order to reduce the fluctuation of effluent ammonia nitrogen,reduce the energy consumption of the water plant and improve the TN removal rate of the AAO process,a sewage treatment plant in the central region adopted a regulation scheme based on ammonia nitrogen feedback under low carbon source conditions,set a 0.5 mg/L effluent ammonia nitrogen feedback limit to ensure that ammonia nitrogen meets the standard,and set three aeration rates and three sludge concentration conditions for testing.The results show that when the total aeration rate of the aerobic tank is 4000 m^(3)/h and the sludge concentration range is 4500~5500 mg/L,the average effluent ammonia nitrogen is 0.1 mg/L,the average TN removal rate is 62%,and the average effluent TN concentration is as low as 9.1 mg/L,and the goal of energy saving and consumption reduction is achieved.

关 键 词:氨氮反馈 曝气量 污泥浓度 生物脱氮 溶解氧 

分 类 号:TU992[建筑科学—市政工程]

 

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