酸碱调节对城市污泥降解性能的影响  

Effect of Acid-base Regulation on Degradation of Sewage Sludge

作　　者：赵玉芬 ZHAO Yu-fen(Guangdong Province Zhaoqing Ecological Environment Monitoring Station,Guangdong Zhaoqing 526040,China)

机构地区：[1]广东省肇庆生态环境监测站,广东肇庆526040

出　　处：《广州化工》2023年第7期138-140,共3页GuangZhou Chemical Industry

摘　　要：在(21±1)℃左右恒温条件下,对剩余活性污泥进行酸碱调节(pH 3~11),并用机械式搅拌器(80 rpm)持续混匀污泥,分不同时间段(0.5、1、2、4、6 h)取样分析污泥的溶解性COD(SCOD)、正磷酸盐、氨氮和硝酸盐氮的含量,以此来研究酸碱调节对城市污泥降解性能的影响。实验结果表明,酸碱调节后,在碱性条件下污泥中的SCOD、正磷酸盐、氨氮和硝酸盐氮等含量上升,更有利于污泥的生化降解。At about constant temperature conditions(21±1)℃,the remaining sludge for pH adjustment(pH 3~11),and a mechanical stirrer(80 rpm)continued to mix the sludge,divided into different time periods(0.5,1,2,4,6 h)sampling of the sludge soluble COD(SCOD),orthophosphate,ammonia nitrogen and nitrate nitrogen,in order to study the degradation of acid-base regulation on the performance of sewage sludge.The experimental results showed that the contents of SCOD,orthophosphate,ammonia nitrogen and nitrate nitrogen in sludge increased after acid-base adjustment,which was more conducive to the biochemical degradation of sludge.

关 键 词：活性污泥 酸碱调节 降解性能 

分 类 号：X703[环境科学与工程—环境工程]