Industrial Water Treatment ›› 2024, Vol. 44 ›› Issue (11): 61-66. doi: 10.19965/j.cnki.iwt.2023-1024

• RESEARCH AND EXPERIMENT • Previous Articles     Next Articles

Pretreatment of phosphating wastewater with different advanced oxidation processes

Chenfei ZHANG1,2(), Can HE1,3,4(), Zhongguo ZHANG1,3,4, Jianbing WANG2, Jian ZHANG1,3,4, Mengyu WANG1,5, Hongfang SUN1,3,4, Zhifeng HU1,3,4, Chenhao GONG1,3,4, Junxing HAN1,3,4, Yue SHAN1,3,4   

  1. 1. Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing 100089, China
    2. School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
    3. Key Laboratory of Energy-Water Conservation and Wastewater Resources Recovery, China National Light Industry, Beijing 100089, China
    4. The National Engineering Laboratory of Circular Economy (Industrial Wastewater Utilization and Industrial Water Conservation), Beijing 100089, China
    5. School of Environment, Beijing Jiaotong University, Beijing 100044, China
  • Received:2024-07-22 Online:2024-11-20 Published:2024-12-09

不同高级氧化工艺预处理磷化废水

张辰飞1,2(), 何灿1,3,4(), 张忠国1,3,4, 王建兵2, 张健1,3,4, 王梦玉1,5, 孙红芳1,3,4, 胡智丰1,3,4, 宫晨皓1,3,4, 韩军兴1,3,4, 单悦1,3,4   

  1. 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
  • 作者简介:

    张辰飞(2000— ),硕士。E-mail:

    何灿,博士,正高级工程师。E-mail:

  • 基金资助:
    国家重点研发计划项目(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(24CA006)

Abstract:

The effects of three oxidation processes, ozone (O3) oxidation, O3/potassium peroxymonosulfate (PMS) oxidation, and O3/hydrogen peroxide (H2O2) oxidation, on the treatment of phosphating wastewater were compared. Additionally, the quality of effluent was analyzed through measurements of COD, UV254, and three-dimensional fluorescence 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 H2O2 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 O3/PMS oxidation process with PMS mass concentration of 2 g/L, the COD removal rate reached 58.3% by the O3/H2O2 oxidation process with 0.5 g/L dosage of H2O2 (30% concentration). Among the three methods, the O3/H2O2 process demonstrated the highest efficacy in removing COD from phosphating wastewater, as the synergistic production of more highly oxidative free radicals by O3 and H2O2 enhancd the oxidation capacity of the system. All three processes effectively degraded aromatic compounds and fluorescent substances in wastewater, while the individual O3 oxidation and the O3/PMS process mainly degraded substances resembling proteins into fulvic and humic-like materials, and the O3/H2O2 oxidation process could further degrade these fulvic and humic-like substances.

Key words: phosphating wastewater, pretreatment, ozonation, O3/PMS, O3/H2O2

摘要:

对比研究了单独臭氧(O3)氧化、O3/单过硫酸氢钾(PMS)氧化和O3/过氧化氢(H2O2)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、UV254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、H2O2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、O3投加量7.65 mg/min时,单独臭氧氧化工艺,COD的去除率仅为37%;O3/PMS氧化工艺,PMS投加量2 g/L,COD的去除率为45.65%;O3/H2O2氧化工艺,H2O2(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O3/H2O2对磷化废水中COD去除效果最好,O3和H2O2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O3氧化和O3/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,O3/H2O2氧化工艺可以对类富里酸和类腐殖酸类物质进一步降解。

关键词: 磷化废水, 预处理, 臭氧氧化, O3/PMS, O3/H2O

CLC Number: