固体停留时间对HLB-MR反应器直接回收城市污水中有机物的影响

doi:10.13278/j.cnki.jjuese.20180272

吉林大学学报(地球科学版) ›› 2020, Vol. 50 ›› Issue (1): 243-251.doi: 10.13278/j.cnki.jjuese.20180272

• 地质工程与环境工程 • 上一篇

固体停留时间对HLB-MR反应器直接回收城市污水中有机物的影响

万立国^1,2, 林巧¹, 张丽君¹, 张文华^1,2, 龙北生^1,2, 任志敏^1,2

1. 长春工程学院水利与环境工程学院, 长春 130012;
2. 吉林省城市污水处理重点实验室(长春工程学院), 长春 130012

收稿日期:2018-10-25 发布日期:2020-02-11
作者简介:万立国(1982-),男,副教授,主要从事污水处理及资源化研究,E-mail:wanliguoking@163.com
基金资助:
国家科技重大专项（2012ZX07202-009-01）；吉林省自然科学基金项目（20180101317JC）；吉林省省级产业创新专项资金项目（2019C055）；吉林省重点科技攻关项目（20160204006SF）；长春工程学院种子基金项目（320180027）

Effects of Solid Retention Time on Organic Matter Recovery Directly from Municipal Wastewater by High Loaded Bioflocculation Membrane Reactor

Wan Liguo^1,2, Lin Qiao¹, Zhang Lijun¹, Zhang Wenhua^1,2, Long Beisheng^1,2, Ren Zhimin^1,2

1. School of Water Conservancy&Environment Engineering, Changchun Institute of Technology, Changchun 130012, China;
2. Jilin Provincial Key Laboratory of Municipal Wastewater Treatment(Changchun Institute of Technology), Changchun 130012, China

Received:2018-10-25 Published:2020-02-11
Supported by:
Supported by National Science and Technology Major Project (2012ZX07202-009-01), Natural Science Foundation of Jilin Province (20180101317JC), Provincial Industrial Innovation Special Fund of Jilin Province (2019C055), Key Science and Technology of Jilin Province (20160204006SF) and Seed Foundation of Changchun Institute of Technology (320180027)

摘要/Abstract

摘要： 为优化高负荷生物絮凝-膜反应器（HLB-MR）的工艺参数，提高其资源化城市污水的效能，采用平行对比实验，考察了不同固体停留时间（t_SR）条件下反应器的有机物去除效率、生物絮凝效果、有机物回收效果和膜污染情况。结果表明：在t_SR分别为0.2、0.6、1.0 d时，HLB-MR反应器有机物去除效率均在85%以上，其出水化学需氧量（COD）质量浓度均保持在30 mg/L左右；反应器内的生物絮凝效果随着t_SR的延长而增强，其胶体COD絮凝效率从t_SR为0.2 d时的66%增加到t_SR为1.0 d时的95%，与此同时，有机物的矿化损失率也逐渐增加，从t_SR为0.2 d时的6.9%增加到t_SR为1.0 d时的10.5%，总COD的回收率逐渐降低；反应器内浓缩液的膜污染潜势随着t_SR的延长逐渐缓解，这与较长t_SR条件下反应器内胞外聚合物（EPS）产量较高、生物絮凝效果较好、微细颗粒（0~1 μm）的颗粒浓度较低有关。经过综合对比分析，0.6 d为反应器较优的t_SR参数，在该条件下，胶体COD的絮凝效率高达90%，膜污染程度较轻；总COD的矿化损失率低至7.4%，总COD的回收率（忽略膜清洗时有机物损失）可高达80%以上。

关键词: 城市污水, 固体停留时间, 生物絮凝, 膜反应器, 有机物回收, 膜污染

Abstract: In order to optimize the process parameter of high loaded bioflocculation-membrane reactor (HLB-MR) and improve its efficiency of recovering organics in municipal wastewater, the organics removal, bioflocculation, organics recovery, and membrane fouling of the reactor were investigated under different solid retention time (t_SR) in parallel. When the HLB-MR operated at t_SR of 0.2, 0.6, and 1.0 d respectively, all the efficiencies of organics removal reached above 85% and the chemical oxygen demands (COD) of permeate were all stable at around 30 mg/L. The bioflocculation effect was enhanced with the extension of t_SR, and the flocculation efficiency of colloid COD increased from 66% when t_SR was 0.2 d to 95% when t_SR was 1.0 d. The mineralization loss rate of organics increased gradually from 6.9% when t_SR was 0.2 d to 10.5% when t_SR was 1.0 d, while the recovery rate of total COD decreased gradually. The membrane fouling potential of the concentrate in the reactor was gradually alleviated with the extension of t_SR, which was related to higher EPS yield, better bioflocculation effect and lower particle fraction of fine particles (0-1 μm) under a longer t_SR in the reactor. Compared with 0.2 d and 1.0 d, 0.6 d was considered to be optimal t_SR of the HLB-MR from a comprehensive perspective. Under this condition, the flocculation efficiency of COD was up to 90%, the membrane fouling was relatively light, the total COD loss rate was as low as 7.4%, and the recovery rate of total COD could be as high as 80% if the loss of organic matter was ignored during the membrane cleaning.

Key words: municipal wastewater, solid retention time, bioflocculation, membrane reactor, organics recovery, membrane fouling

中图分类号:

X703.1

万立国, 林巧, 张丽君, 张文华, 龙北生, 任志敏. 固体停留时间对HLB-MR反应器直接回收城市污水中有机物的影响[J]. 吉林大学学报(地球科学版), 2020, 50(1): 243-251.

Wan Liguo, Lin Qiao, Zhang Lijun, Zhang Wenhua, Long Beisheng, Ren Zhimin. Effects of Solid Retention Time on Organic Matter Recovery Directly from Municipal Wastewater by High Loaded Bioflocculation Membrane Reactor[J]. Journal of Jilin University(Earth Science Edition), 2020, 50(1): 243-251.

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固体停留时间对HLB-MR反应器直接回收城市污水中有机物的影响

Effects of Solid Retention Time on Organic Matter Recovery Directly from Municipal Wastewater by High Loaded Bioflocculation Membrane Reactor

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