序批式运行Anammox颗粒污泥的有机碳源胁迫效应  

Stress of High Concentration Organic Carbon Source on Anammox Granular Sludge under Sequencing Batch Operation

作　　者：靳翱玮 廖方新 孙远博 贺程璐 姜滢[1] 郭萌蕾 陈重军[1,2,3] JIN Ao-wei;LIAO Fang-xin;SUN Yuan-bo;HE Cheng-lu;JIANG Ying;GUO Meng-lei;CHEN Chong-jun(School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment,Suzhou 215009,China;Jiangsu Provincial Key Laboratory of Environmental Science and Engineering,Suzhou 215009,China)

机构地区：[1]苏州科技大学环境科学与工程学院,江苏苏州215009 [2]江苏水处理技术与材料协同创新中心,江苏苏州215009 [3]江苏省环境科学与工程重点实验室,江苏苏州215009

出　　处：《中国给水排水》2022年第3期14-20,共7页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51508366);中国博士后科学基金资助项目(2020M671400);江苏省自然科学基金资助项目(SBK2020022850);苏州市民生科技项目(ss2019022);江苏水处理技术与材料协同创新中心预研项目(XTCXSZ2019-3);江苏省环境科学与工程重点实验室开放基金资助项目(Zd1804)。

摘　　要：以厌氧氨氧化颗粒污泥为研究对象,采用序批式研究方法,考察了不同高浓度COD条件下,厌氧氨氧化颗粒污泥对碳、氮的去除规律,并探究了颗粒污泥物理性状的变化。研究发现,序批式运行可以降低有机碳源对厌氧氨氧化颗粒污泥的胁迫效应,在进水NH_(4)^(+)-N和NO_(2)^(-)-N平均浓度分别为126.0 mg/L和173.2 mg/L的条件下,COD<900 mg/L时对系统脱氮除碳具有促进作用,而COD>900 mg/L时存在显著抑制作用。在COD为600 mg/L时,NH_(4)^(+)-N和COD的去除率分别达到97.2%和87.7%,脱氮除碳效率最高。随着有机负荷的提高,厌氧氨氧化颗粒污泥从红色向黑褐色转变,粒径在1.2~2.0 mm的颗粒污泥逐渐占据主导,在COD为900 mg/L时占比达到70.0%,而后开始解体,颗粒污泥在COD为600 mg/L时沉降速度最佳,达到17.0 m/h。The sequencing batch operation was used to investigate the carbon and nitrogen removal and physical characters of anaerobic ammonia oxidation (Anammox) granular sludge under different high-concentration of COD.The results showed that the sequencing batch operation could reduce the stress of organic carbon source on Anammox granular sludge.Under the condition that the average concentration of influent NH_(4)^(+)-N and NO_(2)^(-)-N were 126.0 mg/L and 173.2 mg/L respectively when COD was below 900 mg/L,it would promote the denitrification and carbon removal of the system However,there was a significant inhibitory effect on Anammox when the COD concentration was increased to more than 900 mg/L.In addition,the NH_(4)^(+)-N and COD removal efficiency reached the highest at 97.2%and 87.7%when the COD concentration was 600 mg/L.The color of Anammox granular sludge changed from red to dark brown with the organic loading increasing.Also,the granular sludge was dominated gradually at a particle diameter of 1.2-2.0 mm,which accounted for 70.0%at 900 mg/L of COD.However,the Anammox granular sludge disintegrated when the COD concentration was increased to more than 900 mg/L.The sedimentation speed of granular sludge reached highest at 17.0 m/h when COD concentration was 600 mg/L.

关 键 词：有机碳源 厌氧氨氧化 颗粒污泥 脱氮除碳 胁迫效应 

分 类 号：TU992[建筑科学—市政工程]