不同C/P下AOA-SBR工艺磷形态转化规律及污泥特性  

Phosphorus morphology transformation law and sludge characteristics of AOA-SBR process under different C/P

作　　者：曲红[1] 石雪颖 聂泽兵 李清哲 刘文爱 于鸽 马云广 边德军[1,2] QU Hong;SHI Xue-ying;NIE Ze-bing;LI Qing-zhe;LIU Wen-ai;YU Ge;MA Yun-guang;BIAN De-jun(Changchun Institute of Technology,Key Laboratory of Jilin Urban Sewage Treatment,Changchun 130012,China;Science and Technology Innovation Center for Municipal Wastewater Treatment and Water Quality Protection,School of Environment,Northeast Normal University,Changchun 130117,China;China Northeast Municipal Engineering Design and Research Institute,Changchun 130021,China)

机构地区：[1]长春工程学院,吉林省城市污水处理重点实验室,吉林长春130012 [2]东北师范大学环境学院,吉林省城市污水处理与水质保障科技创新中心,吉林长春130117 [3]中国市政工程东北设计研究总院有限公司,吉林长春130021

出　　处：《中国环境科学》2022年第1期92-101,共10页China Environmental Science

基　　金：国家自然科学基金资助项目(51878067);吉林省科技发展计划项目(20200201005JC)。

摘　　要：采用5组厌氧/好氧/缺氧(AOA)模式运行的SBR反应器,考察不同C/P(120,40,24,17,13)下AOA-SBR系统磷形态转化规律及污泥特性.结果表明,5组反应器的COD、TN、NH_(4)^(+)-N去除效果均优于一级A标准.随着C/P的降低,系统TP去除量逐渐提高.C/P小于24时,TP的去除效果开始变差且波动剧烈,在C/P为40时系统TP去除效果最稳定,平均去除率为99.22%.磷形态结果表明,随着C/P的降低,污泥中各项磷形态含量均有所升高.IP是TP最主要的磷形态,不同C/P下IP占TP的含量相近(约96%).随着C/P的降低,NAIP、AP占污泥TP的含量与IP都呈先上升后下降的趋势,而OP占污泥TP的含量保持下降趋势.生物有效磷(NAIP与OP之和)对污水除磷效果影响最大,C/P为40的系统中污泥中生物有效磷占比最高,污水TP去除效果最好.污泥MLSS与SVI值随着C/P的降低而增大,C/P较低的系统有发生污泥膨胀的风险.高通量测序表明,随着C/P的降低,除Dechloromonas外,PAOs与DPB含量均有所下降,污水TP去除效果较差且波动较大.Five groups of SBR reactors operating in anaerobic,aerobic,anoxic(AOA)mode were used to investigate the transformation rules of phosphorus morphology and sludge characteristics of AOA-SBR system under different C/P(120,40,24,17,13).The results showed that the removal effect of COD,TN and NH_(4)^(+)-N all outperformed the primary A standard.As the C/P decreased,the system TP removal gradually increased.When the C/P was less than 24,the removal effect of the TP began to deteriorate and fluctuate violently.When the C/P was 40,the system was the most stable,with an average removal rate of 99.22%.The results showed that with the decrease of C/P,the phosphorus forms in the sludge increased.IP was the main phosphorus form of TP,and IP was similar under different C/P(about 96%).As C/P decreased,the content of sludge TP and IP decreased,while OP content of sludge TP maintained a downward trend.Biological effective phosphorus(the sum of NAIP and OP)had the greatest impact on sewage phosphorus removal effect,with the highest proportion of bioeffective phosphorus in the sludge with C/P 40,and the best sewage TP removal effect.MLSS and SVI increased with C/P,while the risk of sludge expansion the lower C/P systems.High-throughput sequencing showed that with the decrease of C/P,both PAOs and DPB content decreased except for Dechloromonas,and the sewage TP removal effect was poor and fluctuated greatly.

关 键 词：AOA-SBR工艺 C/P 磷形态 污泥特性 PAOS 

分 类 号：X703[环境科学与工程—环境工程]