基于不同接种污泥复合型厌氧氨氧化反应器的快速启动特征

发布时间：2018-02-22 09:28

本文关键词： 厌氧氨氧化快速启动污泥源复合型反应器颗粒化　出处：《环境科学》2017年10期 　论文类型：期刊论文

【摘要】：为获得快速启动厌氧氨氧化的最佳污泥源及厌氧氨氧化颗粒污泥的快速形成工艺,采用本实验室自主研发复合型CAMBR反应器(厌氧折流板反应器(ABR)+膜生物反应器(MBR),分别接种厌氧颗粒污泥(R1)和絮状反硝化污泥(R2),考察不同接种污泥的厌氧氨氧化启动特征和颗粒化程度.结果表明,R1与R2反应器分别耗时45 d和60 d均成功快速启动厌氧氨氧化,其启动过程均可分为活性停滞期、活性提高期、活性稳定期3个阶段,但每个阶段氮素的去除规律略有不同,稳定运行期内,R1和R2反应器内NH_4~+-N和NO-2-N的平均去除率均高达95%以上;此外,R1反应器中形成了直径0.8~1.6mm为主的厌氧氨氧化红色颗粒污泥,R2反应器则以不规则块状和絮状为主,颗粒化程度较低,两个反应器内均可观察到红色颗粒污泥上浮现象;稳定运行期内NH_4~+-N、NO-2-N和NO_3~--N之间的定量关系分析表明:R1反应器内可能存在着硝酸盐型厌氧氨氧化,致使NH_4~+-N过量转化,R2反应器内则为典型亚硝酸盐型厌氧氨氧化.
[Abstract]:In order to obtain the best sludge source for rapid starting anaerobic ammonia oxidation and the rapid formation process of anaerobic ammonia oxidation granular sludge, CAMBR membrane bioreactor was developed in our laboratory, inoculated with anaerobic granular sludge (R1) and flocculated denitrifying sludge (R2N), respectively, to investigate the anaerobic ammonia oxidation start-up of different inoculated sludge. The results showed that R1 and R2 reactor took 45 days and 60 days to start anaerobic ammonia oxidation, respectively. The initiation process can be divided into three stages: activity stasis stage, activity increasing stage and activity stable phase, but the nitrogen removal law is slightly different in each stage. The average removal rates of NH _ 4- N and NO-2-N in R1 and R2 reactors were above 95%, and the anaerobic ammonia oxidation red granular sludge R ~ 2 reactor with a diameter of 0.8 ~ 1.6mm in diameter was mainly irregular and flocculent in R1 reactor, and the average removal rate of NH _ 4 ~ -N and NO-2-N in R1 reactor was more than 95%, and the average removal rate of NH4 ~ -N and NO-2-N in R1 / R1 reactor was more than 95%. The red granular sludge floatation was observed in the two reactors, and the quantitative analysis of the relationship between NH _ 4 ~ -N _ (no _ 2-N) and NO_3~--N in the stable operation period showed that nitrate-type anaerobic ammonia oxidation might exist in the reactor. The anaerobic ammonia oxidation of nitrite type in Artoo 2 reactor resulted in NH4- N excessive conversion.
【作者单位】：苏州科技大学环境科学与工程学院;江苏省水处理技术与材料协同创新中心;江苏省环境科学与工程重点实验室;
【基金】：国家自然科学基金项目(51578353) 江苏省自然科学基金项目(BK20160356) 江苏高校优势学科建设工程项目环境工程江苏省重点专业类项目江苏省高校自然科学研究项目(16KJB610013) 苏州科技学院科研基金青年项目(XKQ201504)
【分类号】：X703

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