摘要
以模拟含磷废水和实际高盐腌制废水为底物,考察了铁碳微电解的除磷效能、机理及影响因素。结果表明:铁碳微电解具有良好的除磷能力,当PO43--P初始质量浓度为19.44 mg/L,反应120 min后,废水中剩余PO43--P质量浓度为4.65 mg/L,去除率为76.05%,平均反应速率为0.12 mg/(L·min);铁碳微电解除磷生成的沉淀物主要为FePO4;PO43--P初始浓度越高,铁碳微电解除磷速率越高,二者呈现线性相关,铁碳微电解除磷为一级反应;盐度(以NaCl计)显著抑制铁碳微电解除磷,在盐度影响下,铁碳微电解除磷速率呈指数式衰减;铁碳微电解对实际高盐腌制废水(盐质量浓度大于20 g/L)除磷作用接近100%。
Employing simulated phosphorus wastewater and actual high salinity pickle wastewater as substrates,the removal efficiency,mechanism and influencing factors of phosphorus removal by iron-carbon microelectrolysis were investigated.The results showed that iron-carbon microelectrolysis had an excellent phosphorus removal ability,when the initial PO43--P concentration was 19.44 mg/L,after 120 min reaction,the residual PO43--P concentration in the wastewater was 4.65 mg/L,the removal rate was 76.05%,and the average reaction rate was 0.12 mg/(L·min);the precipitate generated by iron-carbon microelectrolysis removal was mainly FePO4,the higher initial PO43--P concentration,the higher iron-carbon microelectrolysis phosphorus removal rate,the relationship was linearly correlated,and the iron-carbon microelectrolysis phosphorus removal is a first-order reaction;iron-carbon microelectrolysis phosphorus removal was inhibited by salinity(taking NaCl as example)significantly,under the influence of salinity,the rate of phosphorus removal by iron and carbon was exponentially decaying;the phosphorus removal rate of actual high salt pickle wastewater(salinity was greater than 20 g/L)by iron-carbon microelectrolysis was close to 100%.
作者
姜云鹏
王昌稳
耿征颜
季夏
翟春晓
贾琇伟
JIANG Yun-peng;WANG Chang-wen;GENG Zheng-yan;JI Xia;ZHAI Chun-xiao;JIA Xiu-wei(Shandong Academy of Environmental Science,Jinan 250013,China;Institute of Architectural Engineering,Zaozhuang University,Zaozhuang 277160,China;Wuxi Hansituo Science and Technology Co.,Ltd.,Wuxi 214028,China;China University of Geoscience,Wuhan 430074,China)
出处
《环境科技》
2019年第6期8-11,共4页
Environmental Science and Technology
基金
山东省自然科学基金博士基金项目(ZR2016EEB09)
枣庄学院博士科研启动基金(1020709)
2019年山东省大学生创新创业项目(S201910904014)
关键词
碳微电解
除磷
影响因素
高盐废水
Iron-carbon microelectrolysis
Phosphorus removal
Influence factor
High salinity wastewater
