初沉污泥与剩余污泥热水解厌氧消化性能研究  

Performance of Biogas Production by Anaerobic Digestion of Primary Sludge and Waste Activated Sludge

作　　者：任征然 王佳伟[1] 高金华[1] 文洋[1] 郝姗 张含 REN Zhengran;WANG Jiawei;GAO Jinhua;WEN Yang;HAO Shan;ZHANG Han(Beijing Engineering Technology Research Center for Municipal Sewage Reclamation,R&D Center,Beijing Drainage Group Co Ltd,Beijing 100124,China;Tonghui River BasinCompany,Beijing Drainage Group Co Ltd,Beijing 100082,China)

机构地区：[1]北京城市排水集团有限责任公司科技研发中心,北京市污水资源化工程技术研究中心,北京100124 [2]北京排水集团通惠河流域公司,北京100082

出　　处：《中国沼气》2024年第1期23-29,共7页China Biogas

基　　金：国家重点研发计划(2019YFC1906503)。

摘　　要：通过分析初沉污泥和剩余污泥的物化性质及厌氧消化性能,研究了热水解对初沉污泥和剩余污泥的影响。研究结果表明,两种污泥中的有机质主要为糖类、蛋白质和脂肪,初沉污泥的脂肪含量高于剩余污泥,而糖类和蛋白质含量则低于剩余污泥。初沉污泥热水解前后厌氧消化产气率分别为365和376 L·kg^(-1)TS,剩余污泥分别为102和273 L·kg^(-1)TS。热水解对初沉污泥的影响并不明显。但经过热水解处理后,剩余污泥的厌氧消化性能得到了显著提升,其VS去除率从29%提高至49%,初沉污泥和剩余污泥的混合污泥也从33%提高至48%。因此,热水解处理在提升污泥厌氧消化性能方面具有显著效果,但需针对不同污泥的特性选择适当的热水解工艺。This study investigated the effects of hydrothermal pretreatment on the physicochemical properties,as well as anaerobic digestion performance of primary and waste activated sludge.The results showed that the organic matter in both types of sludge consisted mainly of sugars,proteins,and lipids.The lipid content was higher in primary sludge,while the sugar and protein contents were higher in excess sludge.The anaerobic digestion gas production rates of primary and excess sludge before and after hydrothermal pretreatment were 365 and 376 L·kg^(-1)TS,and 102 and 273 L·kg^(-1)TS,respectively.The effect of hydrothermal pretreatment on primary sludge was not significant,while the anaerobic digestion performance of excess sludge was significantly improved,with a volatile solids removal rate increasing from 29%to 49%.The mixed sludge also showed an increase in volatile solids removal rate from 33%to 48%after hydrothermal pretreatment.Therefore,hydrothermal pretreatment can significantly enhance the anaerobic digestion performance of sludge,but appropriate hydrothermal pretreatment processes should be selected based on the characteristics of different types of sludge.

关 键 词：初沉污泥 剩余污泥 物化性质 厌氧消化 

分 类 号：X703[环境科学与工程—环境工程] X933.2