响应面法优化亚硝酸型同步脱氮除硫工艺研究  

Optimization of simultaneous sulfide and nitrite removal process based on response surface methodology

作　　者：王凯权 梁娜 朱晓鹏 张凯瑜 蔡靖[1] WANG Kai-quan;LIANG Na;ZHU Xiao-peng;ZHANG Kai-yu;CAI Jing(College of Environmental Science and Engineering,Zhejiang Gongshang University,Hangzhou 310018,China;School of Information,Zhejiang Guangsha Vocational and Technical University of Construction,Jinhua 322100,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 [2]浙江广厦建设职业技术大学信息学院,浙江金华322100

出　　处：《中国环境科学》2023年第S1期103-109,共7页China Environmental Science

基　　金：浙江省重点研发计划项目(2022C04028);国家自然科学青年基金资助项目(51808494)

摘　　要：采用EGSB反应器运行亚硝酸盐型同步脱氮除硫工艺.基于响应面实验设计探讨了基质浓度、水力停留时间和循环比三因素两两交互对工艺基质去除性能和单质硫产量的影响,并根据模型结果优化工艺运行条件.结果表明,基质浓度对亚硝酸盐型同步脱氮除硫工艺的基质去除性能和单质硫产量具有显著影响.高基质浓度虽有助于单质硫产生,但不利于提高基质去除率;且提高水力停留时间和循环比有助于缓解高基质浓度带来的不利影响.经过响应面模型优化,该工艺最优运行条件为:进水硫化物640.00mgS/L,水力停留时间2h和循环比30,硫化物和亚硝酸盐去除率可达(99.90%±0.03%)和100.00%,单质硫产率可达(77.75%±0.84%).The simultaneous sulfide and nitrite removal process was carried out in the EGSB reactor.Based on the response surface experimental design,the interaction effects of substrate concentration,HRT and circulation ratio on the performance of substrate removal and elemental sulfur yield were investigated,furthermore operating conditions of the process were optimized according to the model results.The results revealed that substrate concentration had a significant effect on the substrate removal performance and elemental sulfur yield of the process.High substrate concentration led to elemental sulfur formation but not to substrate removal,whereas increases in HRT and circulation ratio helped to mitigate the negative effects of high substrate concentration.In view of response surface model optimization,the optimal operating conditions of the process were:influent sulfide concentration of 640.00mg S/L,HRT of 2h and circulation ratio of 30,sulfide and nitrite removal percentage could reach(99.90%±0.03%)and 100.00%,and the elemental sulfur yield could reach(77.75%±0.84%).

关 键 词：亚硝酸盐型同步脱氮除硫工艺 基质浓度 水力停留时间 循环比 响应面法 

分 类 号：X703[环境科学与工程—环境工程]