工业水处理 ›› 2025, Vol. 45 ›› Issue (6): 202-210. doi: 10.19965/j.cnki.iwt.2024-0774

• 试验研究 • 上一篇    

城市景观水体催化臭氧氧化技术的参数优化与效果评价

刘洪泉1(), 翟圣杰2,3, 刘文佳2,3, 王崇璞1, 孔兴华1, 刘艳芳3,4(), 钟雨3,4   

  1. 1. 河北协同水处理技术有限公司,河北 石家庄 050000
    2. 河北科技大学建筑工程学院,河北 石家庄 050018
    3. 河北省污染防治生物技术重点实验室,河北 石家庄 050018
    4. 河北科技大学环境科学与工程学院,河北 石家庄 050018
  • 收稿日期:2024-10-12 出版日期:2025-06-20 发布日期:2025-06-19
  • 通讯作者: 刘艳芳
  • 作者简介:

    刘洪泉(1972— ),硕士,高级工程师,E-mail:

  • 基金资助:
    石家庄市产业技术研究院联合攻关专项(238790699A)

Parameter optimization and effect evaluation of ozone catalytic oxidation technology for urban landscape water

Hongquan LIU1(), Shengjie ZHAI2,3, Wenjia LIU2,3, Chongpu WANG1, Xinghua KONG1, Yanfang LIU3,4(), Yu ZHONG3,4   

  1. 1. Hebei Synergy Water Treatment Technology Co. , Ltd. , Shijiazhuang 050000, China
    2. School of Civil Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
    3. Hebei Key Laboratory of Pollution Prevention Biotechnolgy, Shijiazhuang 050018, China
    4. College of Environmental Sciences and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
  • Received:2024-10-12 Online:2025-06-20 Published:2025-06-19
  • Contact: Yanfang LIU

摘要:

以污水处理厂尾水为景观水体补水来源,能够有效缓解城市水资源紧缺问题,但其有机污染物的存在对水质改善提出了挑战。以活性炭负载型催化剂AC/MnO2-TiO2为臭氧催化剂,探究催化臭氧氧化对城镇景观水体有机物的去除效能,考察反应时间、臭氧流量及催化剂投加量3个因素对有机物去除效果的影响,结合响应曲面实验确定最优工艺条件下的有机物去除效率,并通过GPC、GC-MS、ECOSAR分析手段探究有机物去除机理。结果表明,在臭氧流量为18.15 mg/min,反应时间为57.19 min,催化剂AC/MnO2-TiO2投加量为48.14 g/L的优化条件下,CODMn去除率达80.84%。水体经过催化臭氧氧化处理后,分子质量>1~100 ku的有机物占比从43.9%降至21.2%,分子质量≤1 ku的有机物占比从42.9%增至74.5%。邻二甲苯、十二甲基五硅氧烷、4,5,6,7-四甲氧基黄酮、3,5-二甲基苄基氯、八甲基环四硅氧烷、二乙基二甲基铅等有机物被有效降解,对水体中鱼类、水蚤和绿藻的急性毒性完全消除,慢性毒性降低至无毒或微毒水平。

关键词: 催化臭氧氧化, 有机物去除, 响应曲面法, 毒性分析

Abstract:

Using the effluent from wastewater treatment plants as a source for replenishing landscape water bodies can effectively alleviate urban water scarcity issues, while the presence of organic pollutants poses challenges for water quality improvement. In this article, the removal efficiency of organic matter in urban landscape water by ozone catalytic oxidation using activated carbon supported catalyst AC/MnO2-TiO2 as ozone catalyst was explored. The effects of three factors including reaction time, ozone flow rate, and catalyst dosage on the removal efficiency of organic matter were investigated. Additionally, response surface methodology(RSM) was employed to determine the organic removal efficiency under optimal process conditions. Furthermore, the mechanisms of organic removal were explored by GPC, GC-MS, and ECOSAR analysis. The results showed that under the optimal conditions of ozone flow rate of 18.15 mg/min, reaction time of 57.19 min, and catalyst AC/MnO2-TiO2 dosage of 48.14 g/L, the CODMn removal rate reached 80.84%. After the water body was treated with catalytic ozone oxidation, the percentage of organics with molecular weights ranging of >1-100 ku decreased from 43.9% to 21.2%, while the percentage of organics with molecular weights ≤1 ku increased from 42.90% to 74.5%. Organics such as o-xylene, dodecamethyl pentasiloxane, 4, 5, 6, 7-tetramethoxyflavone, 3, 5-dimethylbenzyl chloride, octamethyl cyclotetrasiloxane, and diethyldimethyl lead were effectively degraded. Moreover, the acute toxicity to fish, water fleas, and green algae in the water body was completely eliminated, and chronic toxicity was reduced to non-toxic or slightly toxic levels.

Key words: ozone catalytic oxidation, organic matter removal, response surface method, toxicity analysis

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