膜生物反应器-超低压纳滤组合工艺处理城镇污水

张恒亮; 段亮; 姚美辰; 魏健; 黄宇华

doi:10.3969/j.issn.1674-991X.2019.01.004

膜生物反应器-超低压纳滤组合工艺处理城镇污水

doi: 10.3969/j.issn.1674-991X.2019.01.004

张恒亮^1,2,3,
段亮^1,3,*, ,,
姚美辰^1,3,
魏健^1,3,
黄宇华^1,3

^1. 环境基准与风险评估国家重点实验室,中国环境科学研究院,北京 100012
^2. 北京师范大学水科学研究院,北京 100875
^3. 中国环境科学研究院城市水环境研究室,北京 100012

详细信息

作者简介:
张恒亮(1990—),男,博士研究生,主要从事水处理技术研究, 1079092104@qq.com

通讯作者:
段亮 E-mail: duanliang@craes.org.cn

中图分类号: X703
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出版历程
- 收稿日期: 2018-09-03
- 刊出日期: 2019-01-20

Study on membrane bioreactor-ultra low-pressure selective nanofiltration for municipal wastewater treatment

ZHANG Hengliang^1,2,3,
DUAN Liang^{1,3,*
, ,},
YAO Meicheng^1,3,
WEI Jian^1,3,
HUANG Yuhua^1,3

^1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
^2. College of Water Sciences, Beijing Normal University, Beijing 100875, China
^3. Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

More Information

Corresponding author: Liang DUAN E-mail: duanliang@craes.org.cn

摘要

摘要: 针对再生水的高品质化和污泥的减量化问题,构建一套膜生物反应器-超低压纳滤组合工艺(MBR-DF)中试装置,以零排泥的方式运行处理城镇污水,同时建立一套传统活性污泥处理工艺(CAS),进水COD及$NH^{+}_{4}$-N、TN、TP浓度分别为87.0~165.7、14.0~31.0、14.2~32.4和2.5~3.3 mg/L。结果表明:浓水零排放MBR-DF系统对COD、$NH^{+}_{4}$-N和$PO_{4}^{3-}$具有较好的去除效果,去除率分别为95.7%、99.0%和68.5%。总溶解固体(TDS)和$HCO^{-}_{3}$的去除率分别为13.5%和31.1%,并能有效地降低出水总硬度。DF膜对$PO_{4}^{3-}$和$SO_{4}^{2-}$具有明显的截留作用,对$NO^{-}_{3}$截留效果较差,对$HCO^{-}_{3}$无截留作用。进水溶解性有机物(DOM)经MBR-DF后,出水中仅剩少量的类色氨酸类物质,且MBR-DF系统对进水DOM的UV₂₅₄消减率达到94.9%,对DOC的去除率在98.0%以上,出水DOM的腐殖质向非腐殖质转化的程度较高。MBR-DF系统和CAS系统对17-β雌二醇(E2)的去除率分别为99.9%和70.8%,MBR-DF系统可有效降低出水回用过程中存在的健康隐患。
- 膜生物反应器-超低压纳滤系统(MBR-DF) /
- 溶解性有机物 /
- 三维荧光 /
- 17-β雌二醇;
Abstract: A pilot-scale experimental device of membrane bioreactor-ultra low-pressure selective nanofiltration (MBR-DF) was constructed to improve the quality of recycled water and the reduction of sludge. The MBR-DF hybrid system was used to treat the municipal sewage and operated in a zero-sludge manner, and a conventional activated sludge process (CAS) was established at the same time. The influent contents of COD, $NH^{+}_{4}$-N, TN and TP were 87.0-165.7, 14.0-31.0, 14.2-32.4, and 2.5-3.3 mg/L, respectively. The results showed that the concentrated water zero-emission MBR-DF system had a good removal effect on COD, $NH^{+}_{4}$-N and $PO_{4}^{3-}$, with the removal rates of 95.7%, 99.0% and 68.5%, respectively. The removal rates of TDS and $HCO^{-}_{3}$ were 13.5% and 31.1% accordingly, and the total hardness of the effluent could be reduced effectively. The DF membrane had a significant retention effect on $PO_{4}^{3-}$ and $SO_{4}^{2-}$, had a poor retention effect on $NO^{-}_{3}$ and had no retention effect on $HCO^{-}_{3}$. After the influent DOM was passed through MBR-DF system, only a small amount of tryptophan-like substances remained. The UV₂₅₄ reduction rate of the influent DOM was 94.9% and the DOC removal rate was above 98.0% in the MBR-DF system. The degree of conversion of humus to non-humus was higher in the effluent DOM. The removal rates of 17-β estradiol (E2) by MBR-DF system and CAS system were 99.9% and 70.8%, respectively. Therefore, MBR-DF system could effectively reduce the health hazards and ecological threats of effluent in recycling.

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