刘壮壮,刘崇涛,吴厚凯,宋建超,李洋洋,陶秀萍,鞠然.电化学膜生物反应器处理猪场污水运行效果[J].农业环境科学学报,2024,43(8):1888-1895. |
电化学膜生物反应器处理猪场污水运行效果 |
Study of swine farm wastewater treatment using electrochemical membrane bioreactor |
投稿时间:2023-11-24 |
DOI:10.11654/jaes.2023-0994 |
中文关键词: 电化学膜生物反应器 猪场 污水 产电性能 污染物 膜污染 |
英文关键词: electrochemistry membrane bioreactor swine farm wastewater electricity generation pollutant membrane fouling |
基金项目:中国农业科学院科技创新工程项目(ASTIP-CAAS);中国农业科学院杰出人才支持计划项目(NKYCLJ-C-2021-029) |
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中文摘要: |
针对目前膜生物反应器(Membrane bioreactor,MBR)处理污水时存在严重的膜污染问题,结合微生物燃料电池(Microbialfuel cell,MFC)处理污水时可产生电能的特点,本研究耦合 MBR 与 MFC,构建新型电化学膜生物反应器(Electrochemistrymembrane bioreactor,EMBR),探讨EMBR处理猪场污水的可行性,并对比评价闭路和开路连接方式的运行效果。结果表明,闭路EMBR可连续稳定运行。产电性能方面,最大功率密度、内阻和库仑效率分别为62.7 mW·m-2、229.1 Ω和15.5%;污染物去除方面,闭路 EMBR 对化学需氧量(COD)、氨氮(NH4+-N)、总氮(TN)和总磷(TP)的去除率分别为 90.4%±0.5%、76.6%±1.8%、62.6%±1.6%和70.5%±3.4%,其中TN的去除率较开路EMBR系统显著提升了3.8%;膜污染减缓方面,闭路EMBR在其自身所产电场作用下可有效减缓膜污染,膜清洗周期较开路EMBR延长了30%。EMBR作为一种新兴污水处理技术,在高效去除猪场污水中污染物的同时可产生电能,并可利用自身所产电能原位减缓膜污染速率。 |
英文摘要: |
Considering severe membrane fouling of the membrane bioreactor(MBR)and electricity generation characteristics of the microbial fuel cell(MFC)during wastewater treatment, this study constructed a novel electrochemical membrane bioreactor(EMBR) through integration of MBR and MFC. The feasibility and performance of swine farms wastewater treatment using EMBR were investigated in closed-circuit and open-circuit connections. The closed-circuit EMBR achieved a continuous and stable operation. Regarding power generation, the maximum power density, internal resistance, and Coulombic efficiency were 62.7 mW·m-2, 229.1 Ω, and 15.5%, respectively. The removal rate of the closed-circuit EMBR for chemical oxygen demand(COD), ammonium(NH4+-N), total nitrogen(TN), and total phosphorus(TP)were 90.4% ±0.5%, 76.6% ±1.8%, 62.6% ±1.6%, and 70.5% ±3.4%, respectively. Compared with the opencircuit EMBR system, the removal rate of TN increased by 3.8%. The closed-circuit EMBR could effectively mitigate membrane contamination owing to its own generated electric field, and the membrane cleaning cycle was extended by 30% compared to that for the open-circuit EMBR. As an emerging wastewater treatment technology, EMBR can generate electricity for in-situ mitigation of membrane contamination and efficiently remove pollutants from swine farm wastewater. |
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