首页|3种乡镇生活污水处理工艺的对比分析

3种乡镇生活污水处理工艺的对比分析

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以四川省3座乡镇生活污水处理厂为例,基于2023年2~12月的运行数据,分析了 BOD5、COD、NH3-N、TN、TP、色度和悬浮物的进出水浓度,讨论了 A2/O、A2/O+MBBR和生物转盘工艺的运行和净化效果.结果表明,研究期间3种工艺的出水浓度均能满足GB 18918-2002《城镇污水处理厂污染排放标准》一级A标准;A2/O+MBBR工艺强化了反硝化和硝化过程,进而显著提升了对生活污水的脱氮效果,而A2/O工艺和生物转盘工艺对TN的平均去除率仅为63.21%和48.85%;3种工艺中,污染指标的去除率从高到低顺序为A2/O+MBBR工艺、A2/O工艺和生物转盘工艺;生物转盘工艺的吨水投资及运行费用均最低,其次为A2/O+MBBR和A2/O工艺.综合去除效果和投资及运行成本,A2/O+MBBR工艺可认为是处理乡镇生活污水的优势工艺.
Comprehensive analysis of 3 kinds of processes for township domestic sewage treatment
Taking 3 township domestic sewage treatment plants in Sichuan province as examples,the color-ity and the concentrations of BOD5,COD,NH3-N,TN,TP and SS in the influent and effluent water were ana-lyzed based on the operating data during February to December 2023.The operation and purification effect of A2/O,A2O+MBBR and biological rotating disc process were discussed.The results showed that,the effluent pollutants concentrations of the three processes during the study period could all meet the requirement of level A grade 1 in GB 18918-2002 Discharge standard of pollutants for municipal wastewater treatment plant.The A2/O+MBBR process strengthened the denitrification and nitrification process,and thus significantly improved the den-itrification effect of the municipal wastewater,while the average TN removal rates by A2/O process and biological rotating disc process were only 63.21%and 48.85%respectively;the pollutants removal rates by the above three kinds of processes followed the descending order of A2/O+MBBR,A2/O and biological rotating disc process.bio-logical rotating disc process has the lowest investment and operating costs,followed by A2/O+MBBR and A2/O processes.Combining the pollutants removal effect,investment and operation cost,A2/O+MBBR process is consid-ered as the dominant process of township domestic sewage treatment.

A2/O+MBBRA2/Orotating biological contactorstownship domestic sewagedenitrification effectinvestment and operating cost

张杨、余妍熹、龚燕川、陈春坛、符东

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四川文理学院建筑工程学院,四川 达州 635000

重庆市计量质量检测研究院,重庆 400000

特色植物开发研究四川省高校重点实验室,四川 达州 635000

四川文理学院化学化工学院,四川 达州 635000

乡村低成本环境治理技术四川省高校重点实验室,四川 达州 635000

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A2/O+MBBR A2/O 生物转盘 乡镇生活污水 脱氮效果 投资及运行成本

达州市科技计划绿色催化四川省高等学校重点实验室开放基金乡村低成本环境治理技术四川省高等学校重点实验室开放基金达州市建筑环境工程技术研究中心开放课题

22ZDYF0057LYJ2201XCH2022ZB-13SDJ2022ZC-01

2024

工业用水与废水
东化工程科技股份有限公司

工业用水与废水

CSTPCD
影响因子:0.649
ISSN:1009-2455
年,卷(期):2024.55(4)
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