CaO2应用于污泥减量的研究  

Study on the application of CaO2 for sludge reduction

作　　者：白润英[1] 徐慧 胡文斌 宋蕾[1] 李会东[1] 刘宇红[1] Bai Runying;Xu Hui;Hu Wenbin;Song Lei;Li Huidong;Liu Yuhong(School of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学土木工程学院

出　　处：《工业水处理》2019年第9期80-83,共4页Industrial Water Treatment

基　　金：国家自然科学基金项目(21107041);内蒙古自治区自然科学基金项目(2018MS05054);内蒙古自治区高等学校科学技术研究项目(NJZY18084)

摘　　要：通过向污泥中投加CaO2考察污泥减量效果以及对污泥液相中SCOD、NH4+-N、PO43--P、溶解性蛋白质和多糖等物质的影响。结果表明,当CaO2投加量为0.1 g/gVSS时,TSS削减率最大,可达到20%;在此投加量下,污泥絮体粒径最小。CaO2可氧化降解污泥,使污泥絮体和微生物细胞破裂,促进SCOD、NH4+-N、PO43--P、溶解性蛋白质和多糖等物质释放到污泥液相中。CaO2减量剩余污泥的过程中,氧化作用比碱解作用贡献更大,且主要是·OH对污泥的氧化分解起到作用,·O2-次之,1O2作用最小。This paper investigated the effects of added CaO2 on the sludge reduction and substances in the liquid phase of the sludge,such as SCOD,NH4+-N,PO43--P,soluble protein and polysaccharide. The results show that when the dosage of CaO2 is 0.1 g/gVSS,the VSS reduction rate is the largest,which can reach 20%,while the sludge floc size is the smallest. CaO2 can degrade sludge by oxidization,which results in the rupture of sludge flocs and microbial cells and promots the release of substances such as SCOD,NH4+-N,PO43--P,soluble proteins and polysaccharides into the liquid phase of sludge. In the process of reducing sludge by CaO2,·OH plays a primary role in the oxidative decomposition of sludge,·O2- takes the second place,and 1O2 has the least effect.

关 键 词：CAO2 污泥减量 挥发性悬浮固体 

分 类 号：X703.1[环境科学与工程—环境工程]