摘要
基于未来可能的主流厌氧氨氧化应用,总结与分析了AB工艺的A段中微生物的研究现状、净化机理以及A段中存在的胞外聚合物(EPS)的作用与影响。A段对污水中碳源的回收,存在着吸附、絮凝、沉降以及生物作用等多种过程,其中,增加进水SS、升高EPS含量、提高pH值、加入二价或三价阳离子、降低多糖含量等方法均可提高污泥的絮凝、沉降、吸附性能。在强化A段捕捉有机物的研究中发现,投加化学絮凝剂是较为可行的强化方法,可以将BOD_5去除率提高到60%～70%。想要进一步降低BOD_5/N比值还需要在B段进一步降低有机物的值,可在新提出的两种工艺的短程硝化阶段或是有机物氧化阶段通过调节DO值,氧化分解有机物使得ANAMMOX菌具有良好活性,以实现主流ANAMMOX工艺。
Based on the possible application of anaerobic ammonia oxidation in the main treatment process in future, this paper summarized and analyzed the research status of microorganisms and purification mechanism in A-stage of AB process, as well as the effect of the extracellular polymer substances （EPS） in the A-stage. There were many processes such as adsorption, flocculation, sedimentation and biodegradation in the A-stage. Among them, it could be found that increasing influent SS, the EPS content and pH, adding two or trivalent cationic flocculants, and reducing the content of polysaecharide could improve the adsorption, flocculation sedimentation performance of sludge. In the study on strength- ening the performance to capture organic matter in A-stage, it was found that the addition of chemical flocculants was a feasible method to increase the removal rate of BOD5 to 60% -70%. To further reduce the BOD5/N ratio, it was necessary to further reduce the value of organic matter in B-stage, which could be realized by adjusting the DO value in the short-term nitrification stage of the two new processes or in the oxidative stage of organic matter. The oxidative decomposition organic compounds makes ANAMMOX bacteria had good activity to achieve the mainstream ANAMMOX process.
作者
姜姗
付昆明
苏雪莹
仇付国
廖敏辉
JIANG Shan;FU Kun-ming;SU Xue-ying;QIU Fu-guo;LIAO Min-hui(Sino-Dutch R ＆ D Centre for Future Wastewater Treatment Technologies,Key Laboratory of Urban Stormwater System and Water Environment 〈 Ministry of Education 〉,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2018年第22期25-30,共6页
China Water & Wastewater
基金
北京市教育委员会科技发展计划项目(SQKM201710016006)
北京建筑大学市属高校基本科研业务费专项资金资助项目(X18214)
关键词
AB工艺
污泥吸附
污泥絮凝
胞外聚合物
AB process
sludge adsorption
sludge flocculation
extracellular polymeric substances
