不同高级氧化工艺预处理磷化废水  

Pretreatment of phosphating wastewater with different advanced oxidation processes

作　　者：张辰飞 何灿 张忠国 王建兵[2] 张健 王梦玉 孙红芳 胡智丰 宫晨皓 韩军兴 单悦 ZHANG Chenfei;HE Can;ZHANG Zhongguo;WANG Jianbing;ZHANG Jian;WANG Mengyu;SUN Hongfang;HU Zhifeng;GONG Chenhao;HAN Junxing;SHAN Yue(Institute of Resources and Environment,Beijing Academy of Science and Technology,Beijing 100089,China;School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;Key Laboratory of Energy-Water Conservation and Wastewater Resources Recovery,China National Light Industry,Beijing 100089,China;The National Engineering Laboratory of Circular Economy(Industrial Wastewater Utilization and Industrial Water Conservation),Beijing 100089,China;School of Environment,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京市科学技术研究院资源环境研究所,北京100089 [2]中国矿业大学(北京)化学与环境工程学院,北京100083 [3]中国轻工业节能节水与废水资源化重点实验室,北京100089 [4]全国循环经济工程实验室(工业废水资源化及工业节水),北京100089 [5]北京交通大学环境学院,北京100044

出　　处：《工业水处理》2024年第11期61-66,共6页Industrial Water Treatment

基　　金：国家重点研发计划项目(2022YFC3203003,2022YFC3203004);北京市科技计划项目(Z201100008220012);北京市科学技术研究院市级财政创新工程项目(23CA004,24CA006)。

摘　　要：对比研究了单独臭氧(O_(3))氧化、O_(3)/单过硫酸氢钾(PMS)氧化和O_(3)/过氧化氢(H_(2)O_(2))氧化3种工艺预处理磷化废水的效果。通过对不同工艺处理后出水COD、UV_(254)和三维荧光光谱分析,研究不同高级氧化工艺对磷化废水出水水质的影响及去除途径。研究表明,增加臭氧投加量和添加适量的PMS、H_(2)O_(2)都可以提高对磷化废水出水中有机污染物的去除效果。废水初始COD (130±20) mg/L、反应120 min、O_(3)投加量7.65 mg/min时,单独臭氧氧化工艺,COD的去除率仅为37%;O_(3)/PMS氧化工艺,PMS投加量2 g/L,COD的去除率为45.65%;O_(3)/H_(2)O_(2)氧化工艺,H_(2)O_(2)(质量分数30%)投加量为0.5 g/L,COD去除率达到58.3%。3种工艺中O_(3)/H_(2)O_(2)对磷化废水中COD去除效果最好,O_(3)和H_(2)O_(2)协同产生更多强氧化性自由基,提高了反应体系的氧化能力。3种工艺对废水中的芳香族化合物及荧光类物质均有明显的降解作用,单独O_(3)氧化和O_(3)/PMS氧化工艺主要是将废水中类蛋白等物质降解为类富里酸和类腐殖酸类物质,O_(3)/H_(2)O_(2)氧化工艺可以对类富里酸和类腐殖酸类物质进一步降解。The effects of three oxidation processes,ozone(O_(3))oxidation,O_(3)/potassium peroxymonosulfate(PMS)oxi⁃dation,and O_(3)/hydrogen peroxide(H_(2)O_(2))oxidation,on the treatment of phosphating wastewater were compared.Ad⁃ditionally,the quality of effluent was analyzed through measurements of COD,UV254,and three-dimensional fluores⁃cence spectra,highlighting the influence of various advanced oxidation processes on the wastewater effluent quality and the removal pathways.The results showed that increasing the ozone dosage and adding appropriate amounts of PMS and H_(2)O_(2) could enhance the removal of organic contaminants from phosphating wastewater.With initial COD of(130±20)mg/L,reaction time of 120 minutes,and ozone dosage of 7.65 mg/min,the COD removal rate was only 37%by the ozonation process,the COD removal rate reached 45.65%by the O_(3)/PMS oxidation process with PMS mass concentration of 2 g/L,the COD removal rate reached 58.3%by the O_(3)/H_(2)O_(2) oxidation process with 0.5 g/L dos⁃age of H_(2)O_(2)(30%concentration).Among the three methods,the O_(3)/H_(2)O_(2) process demonstrated the highest efficacy in removing COD from phosphating wastewater,as the synergistic production of more highly oxidative free radicals by O_(3) and H_(2)O_(2) enhancd the oxidation capacity of the system.All three processes effectively degraded aromatic com⁃pounds and fluorescent substances in wastewater,while the individual O_(3) oxidation and the O_(3)/PMS process mainly degraded substances resembling proteins into fulvic and humic-like materials,and the O_(3)/H_(2)O_(2) oxidation process could further degrade these fulvic and humic-like substances.

关 键 词：磷化废水 预处理 臭氧氧化 O_(3)/PMS O_(3)/H_(2)O_(2) 

分 类 号：X703[环境科学与工程—环境工程] X76