3种乡镇生活污水处理工艺的对比分析
Comprehensive analysis of 3 kinds of processes for township domestic sewage treatment
张杨 1余妍熹 2龚燕川 3陈春坛 4符东4
作者信息
- 1. 四川文理学院建筑工程学院,四川 达州 635000
- 2. 重庆市计量质量检测研究院,重庆 400000
- 3. 特色植物开发研究四川省高校重点实验室,四川 达州 635000
- 4. 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
- 折叠
摘要
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.
Abstract
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.
关键词
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Key words
A2/O+MBBR/A2/O/rotating biological contactors/township domestic sewage/denitrification effect/investment and operating cost引用本文复制引用
基金项目
达州市科技计划(22ZDYF0057)
绿色催化四川省高等学校重点实验室开放基金(LYJ2201)
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(XCH2022ZB-13)
达州市建筑环境工程技术研究中心开放课题(SDJ2022ZC-01)
出版年
2024
NETL
NSTL
万方数据