短程硝化液提升市政污泥中温厌氧消化产沼能力的工程试验分析  

Enancing Anaerobic Biogas Production of Sewage Sludge by Partial Nitrification Liquid In a Practical Project

作　　者：张俊涛 蒋铭明 ZHANG Jun-tao;JIANG Ming-ming(Institute of Chemical Engineering Guangdong Academy of Science, Guangzhou 510665, China)

机构地区：[1]广东省科学院化工研究所,广东广州510665

出　　处：《中国沼气》2022年第1期11-17,共7页China Biogas

基　　金：广东省科学院建设国内一流研究机构行动专项资金项目(2019GDASYL-0105076);练江水体综合治理与生态修复关键技术集成及示范(2019B110205003)。

摘　　要：文章通过控制桂平市污泥处理厂中沼液多级好氧生化系统的曝气量,获得含游离亚硝酸(FNA)的短程硝化液并回流至有效容积为100 m^(3)的中温厌氧反应器,与市政剩余污泥进行联合厌氧消化产沼气。试验结果表明:短程硝化液的加入可显著提高市政污泥中温厌氧消化产酸产气效率。当反应器中HNO^(-)_(2)-N浓度为178 mg·L^(-1)时,SCOD的最大含量由643 mg·L^(-1)提高至1143 mg·L^(-1),VFA的最大含量由768 mg·L^(-1)提高至1368 mg·L^(-1),24 d的累积产气量从598.26 m^(3)提高至710.7 m^(3),产气率提高了18.8%。This article takes advantage of a current project,conducts a project-scale experiment in a residual sludge treatment plant in Guiping City.Produced by controlling the aeration in a multistage oxidation pool for biogas liquid,partial nitrification liquid flows back to a mesophilic anaerobic digestion reactor with effective volume of 100 m^(3),where biogas production from combined anaerobic digestion takes place.The results indicate that the participation of partial nitrification liquid can significantly improve production efficiency of acid and biogas in municipal sludge combined mesophilic anaerobic digestion.When the concentration of FNA is 178 mg·L^(-1)in the reactor,the maximum content of SCOD increases to 1143 mg·L^(-1)from 643 mg·L^(-1),the maximum content of VFA increases to 1368 mg·L^(-1)from 768 mg·L^(-1),accumulated biogas production of 24 d increases to 710.7 m^(3)from 598.26 m^(3),biogas production rate improves 18.8%.

关 键 词：游离亚硝酸 序批式中温厌氧 产沼气 工程试验 

分 类 号：S216.4[农业科学—农业机械化工程] X705[农业科学—农业工程]