摘要
近年来,中国城市化进程快速推进,与此同时城镇污水污泥产量也大幅增加,而我国目前以厌氧消化为主流的污泥处理处置方式在实现污泥减量化、无害化,特别是资源化上还有相当大的提升空间。微生物电解池技术(microbial electrolysis cell,MEC)在处理污水污泥时不仅可以去除多种难降解污染物,而且能够同步回收电能、甲烷,尤其是氢气等能源或能源物质,实现水(泥)-能源-资源耦合,被认为是实现面向未来的污水污泥处理技术之一。本文概括了利用MEC处理剩余污泥回收氢能过程的主要影响因素,分析了其影响机制和较为理想的控制范围,针对工程化应用过程中存在的部分问题提出了优化手段,旨在为提高MEC处理剩余污泥产氢效率、实现其规模化应用提控理论依据。
The process of urbanization in China has been rapidly advancing in recent years.Meanwhile,the output of urban sewage sludge has also increased significantly.Currently,sludge treatment and disposal methods with anaerobic digestion as the mainstream in China have considerable improving space in achieving sludge reduction and harmlessness,particularly in recycling.Microbial electrolysis cell(MEC)can not only remove a variety of refractory pollutants in treating sewage sludge,but also can simultaneously recover energy or energy materials such as electricity,methane,especially hydrogen,achieving water(mud)-Energy-resource coupling.MEC is considered to be one of the advanced sewage sludge treatment technologies in the future.This article summarizes the main influencing factors in the process of using MEC to treat residual sludge to recover hydrogen energy,analyzes the influencing mechanism and ideal control range,and proposes optimization methods for some engineering application process problems,aiming to improve MEC the hydrogen production efficiency by treating the remaining sludge and to provide theoretical basis for the large-scale application.
作者
王志超
Wang Zhichao(School of Environmental Science and Engineering,Nanjing Tech University,Nanjing 210000,China)
出处
《广东化工》
CAS
2021年第20期197-200,226,共5页
Guangdong Chemical Industry
关键词
微生物电解池
产氢
剩余污泥
microbial electrolytic cell
hydrogen production
residual sludge
