臭氧-水解酸化污泥原位减量工艺同步脱氮收磷特性及机理研究

项目名称： 臭氧-水解酸化污泥原位减量工艺同步脱氮收磷特性及机理研究

项目编号： No.51208226

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 建筑环境与结构工程学科

项目作者： 赵玉鑫

作者单位： 吉林建筑大学

项目金额： 28万元

中文摘要： 污水、污泥同步处理是当前污水处理领域新兴的热点、难点问题，污泥原位减量技术为该问题的解决提供了有效途径，其中以臭氧氧化污泥原位减量工艺最具代表性。针对该工艺处理成本高、同步脱氮除磷效果不好等缺点，本研究采用臭氧-水解酸化技术联合溶胞，并与A2/O生物处理系统耦合构成新型污泥原位减量工艺，通过对污泥溶胞过程中碳系、氮系和磷系物质释放规律及其影响因素分析，优化污泥溶胞控制条件，并将臭氧尾气回收利用，降低处理成本；采用结晶鸟粪石法回收厌氧富磷污水和污泥中的磷，研究磷回收方法和优控条件，考察污泥溶解液、收磷上清液回流和臭氧尾气对系统同步脱氮除磷能力的影响及其优化调控机制，提出同步脱氮收磷污泥原位减量方案；利用聚合酶链式反应-变性梯度凝胶电泳技术分析不同运行条件下生物系统内微生物群落动态，结合污泥微生物活性和污泥产率变化特点，揭示污泥原位减量机理，为污水、污泥同步处理与资源化提供科学依据和方法指导。

中文关键词： 污泥减量；原位；臭氧；水解酸化；脱氮收磷

英文摘要： With the growing interests on the synchronization of sewage and sludge treatment, sludge reduction by ozone in-situ absorbed more and more attention for its advantages such as simple operation , easily implemented and no second pollution.But the high costs of running and bad performance of nitrogen and phosphorus removal limits the development of sludge ozontion further.In order to solve these problems,a new sludge reduction process that combines biological treatment process of Anaerobic-Anoxic-Oxicprocess(A2O) and sludge decomposition by ozone-hydrolysis was proposed.Based on the obserbvation of sludge solution and carbon，nitrogen and phosphorus releasing and the analyses of influencing factors,the optimal operation conditions of slduge dicomposation were found.In addition, the oxygen contained in exhaust gas from the ozone reactor was intrduing into the aeration pool as an oxygen source,which could solve the shortage of oxygen supply for biological treatment and cut the treatment costs. The performance of nitrogen and phosphorus removal simultaneous in the new process and the impact of supernate returning into biological treatment process which coming from sludge ozonation and phosphorus recovery as struvite at sidestream were investaged.According to the results,an optimize scheme for nitrogen removal and pho

英文关键词： sludge reduction；in situ；ozone；hydrolysis acidification；nitrogen removal and Phosphorus recovery