厌氧膜生物反应器出水溶解甲烷回收研究进展
Research progress of dissolved methane recovery from anaerobic membrane bioreactor effluent
王朴淳 1吴瑒 1陈银广 2郑雄2
作者信息
- 1. 同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室,上海,200092
- 2. 同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室,上海,200092;上海污染控制与生态安全研究院,上海,200092
- 折叠
摘要
厌氧膜生物反应器(AnMBR)是一种能耗低、处理效率高的污水处理技术.然而,受温度、污泥龄、水力停留时间等工艺参数的影响,生成的甲烷大量溶解在出水中形成过饱和溶液,并随出水排放至环境中,造成了能源物质损失和温室气体排放.若将溶解甲烷有效回收,其可作为补充能源或脱氮碳源原位利用,具有重要的应用价值.为了实现AnMBR出水溶解甲烷有效回收或再利用,本文阐述了目前3种主流回收溶解甲烷技术(膜回收技术、反硝化厌氧甲烷氧化技术、微生物燃料电池)的原理、回收效能和局限性.在此基础上,评估了 AnMBR处理污水全过程的碳足迹,并针对AnMBR出水溶解甲烷回收的未来研究进行了展望.本研究可为双碳背景下AnMBR技术实现能量盈余和资源回收提供理论依据和技术参考.
Abstract
Anaerobic membrane bioreactor(AnMBR)is a wastewater treatment technology with low energy consumption and high treatment efficiency.However,due to the influences of process parameters such as temperature,sludge retention time,and hydraulic retention time,large amounts of generated methane are dissolved in the effluent and ultimately discharged into the environment in a supersaturated state,which not only results in serious energy loss,but also contributes to greenhouse gas emissions.The dissolved methane in the effluent can potentially be utilized as supplementary energy or a carbon source for in-situ nitrogen removal,offering critical application value.In order to effectively recover or reuse dissolved methane from the AnMBR effluent,this work explores the mechanism,efficacy,and limitations of three mainstream recovery technologies,including membrane recovery technology,denitrification anaerobic methane oxidation technology,and microbial fuel cell.Furthermore,the carbon footprint of the whole process of AnMBR wastewater treatment is evaluated,and the future research of dissolved methane recovery from AnMBR effluent is prospected.This work provides theoretical basis and technical guidance for achieving energy surplus and resource recovery of AnMBR technology,aligning the goals of carbon peaking and carbon neutrality.
关键词
溶解甲烷/厌氧膜生物反应器/膜接触器/反硝化厌氧甲烷氧化/微生物燃料电池Key words
dissolved methane/anaerobic membrane bioreactor/membrane contractor/denitrifying anaerobic methane oxidation/microbial fuel cell引用本文复制引用
基金项目
国家重点研发计划(2019YFC1906302)
上海自然科学基金(22ZR1466900)
出版年
2024
NETL
NSTL
万方数据