化学法预处理剩余污泥制备碳源的研究进展
Research Progress in Preparation of Carbon Source by Chemical Pretreatment of Excess Sludge
邓佳星 1王健 2刘玉光 3张桐 3由昆1
作者信息
- 1. 沈阳建筑大学, 辽宁 沈阳 110168
- 2. 中核(辽宁省沈抚新区)环保科技有限公司, 辽宁 抚顺 110172
- 3. 中建安装集团有限公司东北分公司, 辽宁 大连 116021
- 折叠
摘要
剩余污泥(WAS)作为城市污水处理厂运行的必然产物,其产量也在逐年增加.WAS 中含有大量的未稳定的有机物,针对此类有机物的资源化利用无疑会给污泥的减量化处置带来实际意义.WAS 厌氧发酵产生的短链脂肪酸(SCFAs)被公认为优质碳源,但污泥水解是厌氧发酵的限速步骤,需要通过预处理方法促进污泥水解,从而提高SCFAs产量.本文综述了化学预处理剩余污泥中碱解预处理、氧化剂预处理和联合预处理等预处理方法研究进展,为以后以剩余污泥水解液为碳源的工艺提供技术指导.
Abstract
Waste activated sludge(WAS)is an inevitable product of the operation of municipal sewage treatment plant,and its output is increasing year by year.WAS contains a large number of unstable organic matter,and the utilization of such organic matter will undoubtedly bring practical significance to the reduction and disposal of sludge.Short-chain fatty acids(SCFAs)produced by WAS anaerobic fermentation have been recognized as high quality carbon sources,but sludge hydrolysis is a rate-limiting step of anaerobic fermentation,which needs to be promoted by pretreatment methods to improve the yield of SCFAs.In this paper,the research progress of acid base pretreatment,oxidizer pretreatment and combined pretreatment in chemical pretreatment of residual sludge was reviewed,providing technical guidance for the future process using residual sludge hydrolysate as carbon source.
关键词
剩余污泥/厌氧发酵/短链脂肪酸/碱处理Key words
Waste activated sludge/Anaerobic fermentation/Short-chain fatty acids/Alkali pretreatment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据