缺氧/好氧移动床生物膜反应器短程脱氮工艺深度处理煤化工废水性能

doi:10.11949/j.issn.0438-1157.20160382

化工学报 ›› 2016, Vol. 67 ›› Issue (9): 3919-3926.DOI: 10.11949/j.issn.0438-1157.20160382

缺氧/好氧移动床生物膜反应器短程脱氮工艺深度处理煤化工废水性能

庄海峰^1,2, 韩洪军², 单胜道¹, 薛向东¹

1 浙江科技学院浙江省废弃生物质循环利用与生态处理技术重点实验室, 浙江杭州 310023;
2 哈尔滨工业大学城市水资源和水环境国家重点实验室, 黑龙江哈尔滨 150090

收稿日期:2016-03-30 修回日期:2016-05-22 出版日期:2016-09-05 发布日期:2016-09-05
通讯作者: 庄海峰
基金资助:
国家国际科技合作专项项目（2014DFE90040）；浙江省公益技术研究社会发展项目（2016C33108，2015C33301）。

Advanced treatment of coal chemical wastewater using a novel MBBR process with short-cut biological nitrogen removal

ZHUANG Haifeng^1,2, HAN Hongjun², SHAN Shengdao¹, XUE Xiangdong¹

1 Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology, Hangzhou 310023, Zhejiang, China;
2 State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China

Received:2016-03-30 Revised:2016-05-22 Online:2016-09-05 Published:2016-09-05
Supported by:
supported by the International Scientific and Technological Cooperation Program of China (2014DFE90040) and the Public Welfare Technology Application Research Project of Zhejiang Province, China (2016C33108, 2015C33301).

摘要/Abstract

摘要：

煤化工废水生化处理出水仍含有大量有毒和难降解污染物，对环境具有严重的危害，采用缺/好氧移动床生物膜反应器（ANMBBR-MBBR）复合生物短程脱氮技术对煤化工废水进行深度处理。试验结果表明，生物组合工艺有效缓解了废水有毒抑制物和低碳氮比对生物脱氮工艺的负面作用，最佳运行条件为水力停留时间12 h，硝态氮/亚硝态氮混合液回流比200%，该工艺对COD、氨氮和总氮的去除率分别为68.1%、84.0%和74.7%，相应的出水浓度分别为48.0、4.8和13.9 mg·L^-1，均达到了国家城镇污水处理厂污染物排放一级A标准；高有毒负荷下，与传统的A²O生物脱氮工艺相比，该组合工艺具有更加稳定和高效的脱氮效能；而且ANMBBR有效地提高了废水生物降解性（BOD₅/COD值增加至0.3），有利于短程硝化的高效运行，MBBR处理后出水有毒抑制物的数量和种类分别减少了84.4%和54.5%。因此，该组合工艺具有性能高效稳定和经济节约的技术优势，适于煤化工废水深度处理的工程化应用。

关键词: 移动床, 生物技术, 废水, 生物短程脱氮, 有毒抑制物

Abstract:

The biologically pretreated coal chemical wastewater (CCW) still contains a large number of toxic and refractory compounds which has posed great hazard to the environment. In the present work, a novel integration of anoxic moving bed biofilm reactor (ANMBBR) and MBBR with short-cut biological nitrogen removal (SBNR) was employed for the advanced treatment of real CCW. The results indicated the integrated process effectively alleviated the negative effects of toxic inhibitors and the low carbon/nitrogen on biological nitrogen removal. The best performance was obtained at hydraulic residence time of 12 h and nitrate/nitrite nitrogen recycling ratio of 200%. The removal efficiencies of COD, and total nitrogen were 68.1%, 84.0% and 74.7%, the corresponding effluent concentrations were 48.0, 4.8 and 13.9 mg·L^-1, respectively, which all met class-Ⅰ criteria of the Integrated Wastewater Discharge Standard. Meanwhile, compared with traditional A²/O process, the novel integrated process had higher removal performance of and TN, especially under the high toxic loading. Moreover, the ANMBBR played a key role in degrading toxic inhibitors, which was beneficial to improve biodegradability (BOD₅/COD increased by 0.3) further enhancing SBNR efficiency, and the numbers and kinds of toxic inhibitors decreased by 84.4% and 54.5%, respectively in MBBR. Therefore, the integrated processes could serve as a technically feasible and cost-effective method with potential application for advanced treatment of CCW.

Key words: moving bed, biotechnology, wastewater, short-cut biological nitrogen removal, toxic inhibitors

中图分类号:

X703.1

庄海峰, 韩洪军, 单胜道, 薛向东. 缺氧/好氧移动床生物膜反应器短程脱氮工艺深度处理煤化工废水性能[J]. 化工学报, 2016, 67(9): 3919-3926.

ZHUANG Haifeng, HAN Hongjun, SHAN Shengdao, XUE Xiangdong. Advanced treatment of coal chemical wastewater using a novel MBBR process with short-cut biological nitrogen removal[J]. CIESC Journal, 2016, 67(9): 3919-3926.

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缺氧/好氧移动床生物膜反应器短程脱氮工艺深度处理煤化工废水性能

Advanced treatment of coal chemical wastewater using a novel MBBR process with short-cut biological nitrogen removal

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