城市污水处理厂MBR工艺综合评价研究

发布时间：2018-05-13 06:04

本文选题：MBR + 城市污水处理厂　；参考：《清华大学》2015年硕士论文

【摘要】：随着我国严峻的水资源短缺,国家对水质排放标准不断提高,膜-生物反应器(Membrane Bioreactor,MBR)因其优秀的出水水质,占地面积小,产泥率低等特点越来越多的被城市污水处理厂采用。但同时也因MBR工艺其造价及运行成本高等问题出现很多质疑的声音。为了客观反映MBR在城市污水处理厂真实的运行情况,本文通过比较层次分析法、模糊综合评判法、主成分分析法等常用的综合评价方法,并结合城市污水处理厂MBR工艺运行的技术特点,从成本控制、技术性能、工艺运行和环境效益四方面出发,确定了15个评价指标,最终采用模糊层次分析法建立了城市污水处理厂MBR工艺综合评价模型。本文调研了15家城市污水处理厂作为样本水厂(分别以A-O表示),掌握了包括MBR工艺投资及运行成本、设计及运行标准规范、技术参数等数据。对15家样本水厂进行城市污水处理厂MBR工艺综合评价,同时验证建立的综合评价模型的适用性。验证结果为L水厂成绩最优,通过综合评价排名结果来看,检验的结果基本与水厂实际的运行状态相符,说明建立的城市污水处理厂MBR综合评价模型具有一定的适用性。通过综合评价结果选取了在此次综合评价中成绩最好的4家MBR工艺样本水厂作为典型案例进行了技术分析比较,其相关评价指标可以对城市污水处理厂MBR工艺的新建及改扩建提供一定的参考依据。通过城市污水处理厂MBR工艺综合评价研究,给出以下新建及改扩建MBR工艺相关的设计参考:MBR工艺出水可达到优于《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A标准设计;城市污水处理厂MBR工艺污水用地设计参考值为0.57 m2/(m3?d);MBR工艺城市污水处理厂设计平均膜通量参考值为13.7~24.6L/(m2·h);吨水能耗参考值为0.65kw·h/m3;平均单位水量药剂费参考值为0.06元/m3。
[Abstract]:With the severe shortage of water resources in our country, the national discharge standard of water quality has been improved continuously. Membrane Bioreactor MBR has been adopted by municipal wastewater treatment plants more and more because of its excellent effluent quality, small area, low sludge yield and so on. But at the same time because of the high cost and operation cost of MBR process, there are a lot of voices of doubt. In order to objectively reflect the actual operation of MBR in urban sewage treatment plants, this paper compares the commonly used comprehensive evaluation methods, such as AHP, fuzzy comprehensive evaluation, principal component analysis, etc. Combined with the technical characteristics of MBR process operation in urban sewage treatment plant, 15 evaluation indexes were determined from four aspects: cost control, technical performance, process operation and environmental benefit. Finally, the fuzzy analytic hierarchy process (FAHP) is used to establish the comprehensive evaluation model of MBR process in municipal wastewater treatment plant. This paper investigates 15 municipal wastewater treatment plants as sample water plants (expressed as A-O, respectively), and grasps the data including MBR process investment and operation cost, design and operation standards and specifications, technical parameters and so on. The comprehensive evaluation of MBR process in 15 sample water plants was carried out, and the applicability of the established comprehensive evaluation model was verified at the same time. The result of verification is the best in L water treatment plant. According to the result of comprehensive evaluation and ranking, the test result is basically consistent with the actual operation state of water plant, which indicates that the MBR comprehensive evaluation model of municipal wastewater treatment plant has certain applicability. Through the comprehensive evaluation results, four MBR process sample water plants with the best results in this comprehensive evaluation were selected as typical cases for technical analysis and comparison. The evaluation index can provide some reference for the construction and extension of MBR process in municipal wastewater treatment plant. Based on the comprehensive evaluation of MBR process in municipal wastewater treatment plant, the design reference of the following new and extended MBR process is given. The effluent of MBR process can reach the first class A standard design, which is superior to the pollutant discharge standard of municipal wastewater treatment plant (GB 18918-2002). The reference value of MBR process sewage site design is 0.57 m ~ 2 / m ~ (3) / m ~ (-1). The average membrane flux reference value is 13.7~24.6L/(m2 HN, the reference value of energy consumption of ton water is 0.65kw h / m ~ (3), and the reference value of average water quantity is 0.06 yuan / m ~ (3).
【学位授予单位】：清华大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X703

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