添加粉末活性炭强化浸没式膜生物反应器处理城市二级出水性能。

Enhanced performance of a submerged membrane bioreactor with powdered activated carbon addition for municipal secondary effluent treatment.

机构信息

College of Geography and Environmental Sciences, Zhejiang Normal University, 688 Yingbin Avenue, Jinhua, Zhejiang Province 321004, PR China.

出版信息

J Hazard Mater. 2011 Sep 15;192(3):1509-14. doi: 10.1016/j.jhazmat.2011.06.071. Epub 2011 Jul 1.

DOI:10.1016/j.jhazmat.2011.06.071

PMID:21794980

Abstract

The aim of this study was to investigate the feasibility of PAC-MBR process treating municipal secondary effluent. Two laboratory-scale submerged MBRs (SMBR) with and without PAC addition were continuously operated in parallel for secondary effluent treatment. Approximately 63%TOC, 95% NH(4)(+)-N and 98% turbidity in secondary effluent were removed by the PAC-MBR process. Most organics in the secondary effluent were found to be low molecular weight (MW) substances, which could be retained in the reactor and then removed to some extent by using PAC-MBR process. Parallel experiments showed that the addition of PAC significantly increased organic removal and responsible for the largest fraction of organic removal. Membrane fouling analysis showed the enhanced membrane performance in terms of sustainable operational time and filtration resistances by PAC addition. Based on these results, the PAC-MBR process was considered as an attractive option for the reduction of pollutants in secondary effluent.

摘要

本研究旨在考察 PAC-MBR 工艺处理城市二级出水的可行性。采用连续流方式，平行运行 2 个具有和不具有 PAC 投加的实验室规模浸没式膜生物反应器（SMBR），以处理二级出水。PAC-MBR 工艺对二级出水中约 63%TOC、95%NH(4)(+)-N 和 98%浊度的去除率较高。研究发现二级出水中的大部分有机物为低分子量（MW）物质，这些物质可被 PAC-MBR 工艺截留并在一定程度上得到去除。平行实验表明，PAC 的投加显著提高了有机物的去除率，对有机物的去除贡献最大。膜污染分析表明，PAC 的投加增强了膜性能，延长了膜可持续运行时间，降低了过滤阻力。基于这些结果，PAC-MBR 工艺被认为是减少二级出水中污染物的一种有吸引力的选择。