电凝聚臭氧化耦合工艺对有机物与总磷的去除特性  

Characteristics of Electro-Hybrid Ozonation-Coagulation(E‑HOC)Process for Removal of Organic Matter and Total Phosphorus

作　　者：张少华 许建军[3] 王威 金鑫[1] 金鹏康 ZHANG Shao‑hua;XU Jian‑jun;WANG Wei;JIN Xin;JIN Peng‑kang(School of Human Settlements and Civil Engineering,Xi’an Jiaotong University,Xi’an 710049,China;Lianhu Branch Environmental Monitoring Station,Xi’an Ecology and Environment Bureau,Xi’an 710082,China;East China Branch,China Machinery International Engineering Design&Research Institute Co.Ltd.,Nanjing 210046,China;School of Environmental and Municipal Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安交通大学人居环境与建筑工程学院,陕西西安710049 [2]西安市生态环境局莲湖分局环境监测站,陕西西安710082 [3]中机国际工程设计研究院有限责任公司华东分院,江苏南京210046 [4]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《中国给水排水》2023年第21期67-72,共6页China Water & Wastewater

基　　金：国家自然科学基金资助面上项目(52170052、52070151);国家自然科学基金资助重点项目(52230001);陕西省秦创原“科学家+工程师”队伍建设项目(2023KXJ-120);陕西省重点研发计划项目(2021ZDLSF05-06)。

摘　　要：针对污水处理厂尾水水质提升至准Ⅳ类地表水水质标准的需求,以城市污水处理厂的新型一体化污水处理装置出水为研究对象,基于臭氧混凝耦合机理,构建了电凝聚臭氧化耦合工艺(E-HOC)中试系统,在不同极板材料、进水流量、电流密度和臭氧投加量条件下,探究了E-HOC工艺对新型一体化污水处理装置出水中COD和TP的去除效果。结果表明,采用铁板作为E-HOC体系的阳极和阴极效果最优。E-HOC工艺的最佳运行工况:最大进水流量为1.0 m^(3)/h、电流密度为3.66 mA/cm^(2)、臭氧投加量为6.8 mg/L,在此条件下出水COD和TP浓度可满足准Ⅳ类地表水水质标准,COD和TP的去除率分别可达到69%和86%,E-HOC工艺的COD和TP最大承载负荷分别为82.9 mg(/cm^(2)·d)和1.72 mg(/cm^(2)·d)。此外,三维荧光分析结果表明,E-HOC工艺对富里酸类和溶解性微生物代谢产物类有机物的去除效果显著。A pilot‑scale electro-hybrid ozonation-coagulation(E‑HOC)based on the principle of ozonation coupled with coagulation was constructed for the treatment of the effluent of a new integrated sewage treatment device from a wastewater treatment plant,so as to meet the demand for upgrading the effluent quality from wastewater treatment plants to the quasi classⅣsurface water quality standard.The performance of the E‑HOC process for the removal of COD and TP in the new device effluent was investigated under different plate materials,influent flow rates,current densities and ozone dosages.The best performance of the E‑HOC system was obtained when iron plates were used as the anode and cathode.The optimal operational conditions of the process were as follows:the maximum influent flow rate was 1.0 m^(3)/h,the current density was 3.66 mA/cm^(2)and the ozone dosage was 6.8 mg/L,respectively.Under these conditions,the concentrations of COD and TP in the effluent met the quasi classⅣsurface water quality standard,the removal rates of COD and TP reached 69%and 86%,respectively,and the E‑HOC system could withstand the maximum loading rate of 82.9 mg/(cm^(2)·d)and 1.72 mg/(cm^(2)·d)for COD and TP,respectively.In addition,the results of three‑dimensional fluorescence analysis showed that the E‑HOC process demonstrated significant performance for the removal of organic matter such as fulvic acids and soluble microbial metabolites.

关 键 词：电凝聚臭氧化耦合 准Ⅳ类地表水水质 COD TP 

分 类 号：TU992[建筑科学—市政工程]