摘要
利用改性沸石填充电化学反应器对30 mg/L的模拟生活氨氮污水进行处理试验研究,考察了电流密度、氯离子浓度和初始pH对该反应器处理氨氮污水的影响,并对各因素下反应器处理低浓度氨氮污水的反应结果进行了探讨与分析。结果表明,在电流密度为13.19 mA/cm^(2)、初始pH为7.89、氯氮比为6.2时,其氨氮的去除率可达到96.71%;各因素交互作用对于该体系下氨氮去除效果影响大小为:电流密度&氯氮比>电流密度&pH>氯氮比&pH。
An electrochemical reactor filled with modified zeolite is used to conduct an experimental study on treating with 30 mg·L^(-1) of simulated ammoniacal nitrogen-containing domestic sewage.The effects of current density,chloride ion concentration,initial pH and electrode spacing on the performance of the reactor in treating with ammoniacal nitrogen-containing sewage are investigated.The reaction results for treating with low-concentration ammoniacal nitrogen-containing sewage by the reactor under various factors are discussed and analyzed.The optimal operation conditions of the reactor are determined by response surface analysis as follows:current density is 13.19 mA·cm^(-2),initial pH is 7.89,and the ratio of chlorine to nitrogen is 6.2.Under the optimal conditions,the removal rate of ammoniacal nitrogen can reach 96.71%.Under the interaction of various factors,current density&chlorine-nitrogen ratio exhibits the largest impact on the removal effect of ammoniacal nitrogen,followed by current density&pH,and chlorine-nitrogen ratio&pH shows the smallest impact.
作者
班福忱
王健
赵鑫宇
BAN Fu-chen;WANG Jian;ZHAO Xin-yu(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang 110168,China)
出处
《现代化工》
CAS
CSCD
北大核心
2022年第5期157-161,共5页
Modern Chemical Industry
基金
国家水体污染控制与治理科技重大专项(2018ZX07601001)
辽宁省教育厅科技计划重点项目(LJKZ0576)。
关键词
环境工程学
氨氮
电化学反应
改性沸石
影响因素
响应曲面分析法
environmental engineering
ammonia nitrogen
electrochemical reaction
modified zeolite
influencing factors
response surface analysis