基于模型的低负荷运行村镇污水处理厂问题诊断分析

顾晓丹; 黄勇; 丁永伟; 黄继会

doi:10.13205/j.hjgc.202105002

基于模型的低负荷运行村镇污水处理厂问题诊断分析

doi: 10.13205/j.hjgc.202105002

1. 苏州科技大学环境科学与工程学院, 江苏苏州 215009;
2. 苏州市水务集团, 江苏苏州 215001;
3. 苏州市排水有限公司, 江苏苏州 215001

基金项目:

"十三五"水体污染控制与治理科技重大专项子课题（2017ZX07205-0203）；苏州科技大学科研基金项目（XKZ2018001）；江苏省水处理技术与材料协同创新中心项目。

详细信息

作者简介:
顾晓丹(1986-),女,博士,讲师,主要研究方向为城市污水处理系统运行调控及模型构建。guxiaodan1986@163.com

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出版历程
- 收稿日期: 2020-08-11
- 网络出版日期: 2022-01-17

DIAGNOSIS AND ANALYSIS BASED ON MATHEMATICAL MODEL ON PROBLEMS IN SEWAGE TREATMENT PLANTS IN VILLAGES AND TOWNS WITH LOW LOAD OPERATION

1. School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;
2. Suzhou Water Group Co., Ltd, Suzhou 215001, China;
3. Suzhou Drainage Company Limited, Suzhou 215001, China

摘要

摘要: 我国村镇污水处理厂普遍存在进水量和进水浓度偏低的问题，导致村镇污水厂运行稳定性差。为防止低负荷运行影响污水处理厂处理效能的发挥，以临太湖村镇污水厂多点进水倒置AAO工艺为研究对象，以数学模型为基础，建立污水厂水质水量动态响应模型。以数学模拟为主要研究手段，试验作为补充方法，通过模型诊断发现，该厂夏季曝气过剩，活性污泥ρ（MLVSS）/ρ（MLSS）=0.37。试验结果表明：该厂进水ρ（ISS）=57~92 mg/L，ρ（ISS）/ρ（SS）为0.71~0.82，ρ（ISS）/ρ（COD）为0.50~0.84。进入AAO系统的ISS粒径为36~52 μm，而小粒径的ISS组分是导致活性污泥MLVSS/MLSS偏低的主要原因。通过优化进水ISS/COD、泥龄、污泥回流比、曝气量，使得出水水质稳定达到GB 18918-2002《城镇污水处理厂污染物排放标准》一级A标准，污泥活性提高到0.7，全年曝气成本可节省约10%。
- 村镇污水处理厂 /
- 低负荷 /
- 数学模型 /
- 诊断分析
Abstract: The problems of low influent flow and concentration generally existed in sewage treatment plants in villages and towns in China, which led to the poor operation stability of sewage treatment plants in villages and towns. In order to prevent the low load operation from affecting treatment performance, taking the inverted AAO process of multiple points in the sewage treatment plant in villages and towns near Taihu Lake as the research object, based on mathematical model, a dynamic response model of sewage treatment plant was established. With mathematical simulation as the main research method and experiment as the supplementary method, the simulation results showed that aeration was excessive in summer, and then MLVSS/MLSS was 0.37. The results of the experiment showed that the influent ISS concentration was 57~92 mg/L, ISS/SS was 0.71~0.82 and ISS/COD was 0.50~0.84. The ISS particle size entered AAO system ranged from 36 μm to 52 μm. Small particle sized ISS was the main reason for low MLVSS/MLSS in the activated sludge. By optimizing influent ISS/COD, sludge retention age, returned sludge ratio and aeration velocity, the effluent quality reached grade A in standard GB 18918-2002 stably, sludge activity was increased to 0.7, and aeration cost was reduced by about 10%.
- sewage treatment plants in villages and towns /
- low load /
- mathematical model /
- diagnosis and analysis

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参考文献(23)

[1]	付昆明,廖敏辉,王俊安,等.村镇低浓度生活污水现状及处理技术分析[J].环境工程,2019,37(4):48-51 ,111.
[2]	邱鸿荣,罗建中,郑国辉.城市污水处理厂进水浓度低原因及其对策的研究[J].广东化工,2010,37(12):93-94.
[3]	苏雪莹,付昆明.丝状菌在污水处理中的控制与应用[J].水处理技术,2015,41(9):19-23.
[4]	霍鑫超,韩云平,刘俊新,等.新型生物转盘处理农村生活污水研究[J].水处理技术,2014,40(11):103-106.
[5]	杨凤飞,刘锋,李红芳,等.生物滤池-人工湿地-稳定塘组合生态系统处理南方农村分散式污水[J].环境工程,2018,36(12):70-74.
[6]	HENZE M, GUJER W, MINO M, et al. Activated Sludge Models ASM1, ASM2, ASM2d and ASM3[M]. London:IWA Publishing, 2000.
[7]	SARKAR U, DASGUPTA D, BHATTACHARYA T, et al. Dynamic simulation of activated sludge based wastewater treatment processes:case studies with Titagarh sewage treatment plant, India[J]. Desalination, 2010, 252(1):120-126.
[8]	KIM Y H, YOO C, LEE I B. Optimization of biological nutrient removal in a SBR using simulation-based iterative dynamic programming[J]. Chemical Engineering Journal, 2008, 139:11-19.
[9]	陈广,安莹,周振,等. 基于数学模型的多模式AAO系统夏季高温运行优化研究[J].给水排水,2019,45(1):121-126.
[10]	李伟,乌兰,刘剑,等. 计算机模拟在大型污水处理厂升级改造中的应用研究[J]. 给水排水,2010, 36(增刊1):411-415.
[11]	国家环境保护总局,水和废水监测分析方法编委会.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002.
[12]	许光远,艾锐,张超,等.村镇污水处理厂设计水量差异性分析[J].工业用水与废水,2017,48(5):38-40.
[13]	张静,石小峰,侯红勋. 村镇生活污水处理偏大设计问题分析与对策[J]. 工业用水与废水,2018,49(2):44-47.
[14]	张自杰.排水工程(下册)[M].4版.北京:中国建筑工业出版社,2000.
[15]	周晓莉,俞峰,朱光灿,等.江苏农村生活污水处理设施进水水质调查分析[J].环境工程学报,2017,11(3):1445-1449.
[16]	罗惠云,张玲,刘淑琳.南方某市市政污水管道水质检测与原因分析[J].给水排水,2016,42(6):119-124.
[17]	沈盼.南昌市污水处理厂进水浓度偏低原因分析与对策[J].中国市政工程,2012(1):24-25.
[18]	中华人民共和国住房和城乡建设部.室外排水设计规范:GB 50014-2006[S].北京:中国计划出版社,2006.
[19]	EKAMA G A, WENTZEL M C. A predictive model for the reactor inorganic suspended solids concentration in activated sludge systems[J]. Water Research, 2004,38(19):4093-4106.
[20]	吉芳英,何莉,周卫威,等.初沉池对污水中无机悬浮固体的影响[J].环境工程学报,2014,8(8):3093-3098.
[21]	MELCER H, DOLD P L, JONES R M, et al. Methods for wastewater characterisation in activated sludge modeling[M]. Alexandria:Water Environment Research Foundation(WERF) Publishing, 2003.
[22]	HE L, JI F Y, HE X L, et al. Validation of accumulation models for inorganic suspended solids of different particle size in an activated sludge system[J]. Bioresource Technology, 2013, 149:51-57.
[23]	吉芳英,何小玲,何莉,等.细微泥沙对污水生化处理系统的影响及其归趋特性[J].环境工程学报,2014,8(3):801-806.