摘要
将穿透式电化学反应器用于分散式生活污水的处理,研究阳极极板材料、极板间距、污水循环流量、氯离子浓度和电流密度对反应器处理生活污水效果的影响。实验结果表明,相较于锡锑钛网、铱钽钛网两种电极,钌铱钛网作为阳极时反应器的生活污水处理效果最好。污水循环流量对NH_(4)^(+)-N和COD的去除效果影响较小。NH_(4)^(+)-N和COD的去除率与氯离子浓度、电流密度成正比,其他条件不变时,氯离子质量浓度从500 mg/L增加到900 mg/L,NH_(4)^(+)-N和COD去除率从22.82%、31.30%增加到96.36%、73.02%。电流密度从5 mA/cm^(2)增加到30 mA/cm^(2)NH_(4)^(+)-N与COD去除率分别从18.58%、44.20%增加到100%、73.58%。氯离子质量浓度较高时,提高电流密度,能在短时间内生达到快速去除水中污染物的目标,氯离子质量浓度为700 mg/L,电流密度在25 mA/cm^(2)时,NH_(4)^(+)-N和COD去除率能达到92.46%和69.36%,去除单位质量NH_(4)^(+)-N的能耗为23 kWh/kg。
A flow-through electrochemical reactor was employed to treat decentralized domestic sewage.The effects of anode plate material,plate spacing,circulation flow,chloride ion concentration,and current density on treatment performance were investigated.Results indicated that the Ti/RuO₂-IrO₂anode achieved superior removal of contaminants compared with Ti/SnO₂-Sb₂O₅and Ti/Ta₂O₅-IrO₂electrodes.Circulation flow rate had minimal influence on the removal of NH_(4)^(+)-N and COD.Both NH_(4)^(+)-N and COD removal were positively correlated with increasing chloride ion concentration and current density.Specifically,raising the chloride ion concentration from 500 to 900 mg/L enhanced NH_(4)^(+)-N removal from 22.82%to 96.36%and COD removal from 31.30%to 73.02%.Similarly,increasing the current density from 5 mA/cm^(2)to 30 mA/cm^(2)elevated NH_(4)^(+)-N removal from 18.58%to 100%and COD removal from 44.20%to 73.58%.Under conditions of elevated chloride ion concentration,increasing current density enables rapid pollutant removal within a short time.When the chloride ion concentration was 700 mg/L and the current density was 25 mA/cm^(2),the NH_(4)^(+)-N and COD removal rates reached 92.46%and 69.36%,respectively,with an energy consumption of 23 kWh/kg NH_(4)^(+)-N removed.
作者
陶玲
杨埴
任汉儒
杨莉萍
吕麦蓉
任珺
TAO Ling;YANG Zhi;REN Hanru;YANG Liping;LÜMairong;REN Jun(School of Environmental and Municipal Engineering.Lanzhou Jiaotong University,Lanzhou 730070,China;Gansu Hanxing Environmental Protection Co.Ltd.,Lanzhou 730070,China;Gansu Chuangheng Environmental Protection Co.Ltd.,Lanzhou 730070,China;Ningxia Normal University,Guyuan 756099,China)
出处
《水处理技术》
北大核心
2025年第3期125-130,共6页
Technology of Water Treatment
基金
甘肃省教育厅产业支撑计划项目(2021CYZC-31)
甘肃省科技厅科技计划项目(22CX3GA076)
甘肃省科技专员专项(23CXGA0082)
宁夏回族自治区自然科学基金项目(2023AAC03336)。
