亚硝酸盐型同步脱氮除硫工艺单质硫产率及特性  

Yield and characteristics of elemental sulfur in the process of simultaneous nitrite and sulfide removal.

作　　者：孙月 陈柯序 王凯权 楼菊青[1] 王如意[1] 李强标 蔡靖[1] SUN Yue;CHEN Ke-xu;WANG Kai-quan;LOU Ju-qing;WANG Ru-yi;LI Qiang-biao;CAI Jing(College of Environmental Science and Engineering,Zhejiang Gongshang University,Hangzhou 310018,China)

机构地区：[1]浙江工商大学环境科学与工程学院,浙江杭州310018

出　　处：《中国环境科学》2021年第3期1228-1233,共6页China Environmental Science

基　　金：国家自然科学青年基金资助项目(51808494);浙江省自然科学基金资助项目(LY18E080007);浙江省公益技术研究计划项目(LGF19E080003)

摘　　要：采用SBR同步脱氮除硫反应器,设置了化学对照组(灭菌,不添加污泥)和生物试验组(添加污泥),以期研究亚硝酸盐型同步脱氮除硫工艺中S^(0)的产率以及特性.发现化学对照组中NO_(2)^(-)-N和S^(2)--S的去除率最高可分别达到25.07%和62.26%,其主要产物为NH4+-N和S^(2)SO32--S,并无S^(0)生成.而在生物试验组中,NO_(2)^(-)-N和S^(2)--S的去除率可分别高达100%和99.94%,在适宜浓度范围内(60~180mg/L),出水主要产物为S^(0)-S和N2.当进水S^(2)--S为180mg/L时,S^(0)-S产率可高达79.58%.所产生的S^(0)以斜方硫(S8)形式存在,表面带负电荷,粒径呈正态分布.In this experiment,Sequencing batch reactor(SBR)was used for simultaneous nitrogen and sulfur removal.Chemical control group(sterilization,without sludge)and biological test group(adding sludge)were set up to study the yield and characteristics of elemental sulfur in the process of simultaneous nitrite and sulfide removal.In the chemical control group,removal percentages of nitrite and sulfide could reach 25.07%and 62.26%,respectively,and main products were ammonia nitrogen and thiosulfate,in which there was no elemental sulfur produced;while in the biological test,removal percentage of nitrite and sulfide could reach 100%and 99.94%,respectively,and the main products were elemental sulfur and nitrogen gas in the appropriate concentration range(60~180mg S/L).As influent sulfide concentration was 180mg S/L,the production of elemental sulfur was as high as 79.58%.The produced elemental sulfur was existed in the form of orthorhombic sulfur(S8)with negative surface charge,and the particle size of elemental sulfur had a normal distribution.

关 键 词：同步脱氮除硫 生物 化学 亚硝酸盐 硫化物 单质硫 

分 类 号：X703[环境科学与工程—环境工程]