Effect of pre-ozonation on biological effluent of petrochemical wastewater treatment plant

GAO Zhen; WU Changyong; ZHOU Yuexi; SONG Jiamei; LIU Mingguo; CHANG Lijun

doi:10.3969/j.issn.0438-1157.2013.09.042

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Effect of pre-ozonation on biological effluent of petrochemical wastewater treatment plant

更新时间：2025-12-10

- Effect of pre-ozonation on biological effluent of petrochemical wastewater treatment plant
- CIESC Journal Issue 9, Pages: 3390-3395(2013)
- 作者机构：
  
  1. 中国环境科学研究院水污染控制技术研究中心,北京,100012
  2. 河北工程大学城市建设学院,河北,邯郸,056038
  3. 中国地质大学水资源与环境学院,北京,100083
  4. 中国石油吉林石化污水处理厂,吉林市,吉林省,132000
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.09.042
  CLC： 703.1
- Online First：05 September 2013，
  
  Published：05 September 2013
- 稿件说明：
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GAO Zhen, WU Changyong, ZHOU Yuexi, et al. Effect of pre-ozonation on biological effluent of petrochemical wastewater treatment plant[J]. CIESC Journal, 2013, (9): 3390-3395.
DOI：

GAO Zhen, WU Changyong, ZHOU Yuexi, et al. Effect of pre-ozonation on biological effluent of petrochemical wastewater treatment plant[J]. CIESC Journal, 2013, (9): 3390-3395. DOI： 10.3969/j.issn.0438-1157.2013.09.042.

摘要

研究了臭氧预氧化对石化企业综合污水处理厂二级出水水质的改善作用

采用分子量分级、气相色谱质谱联用仪、三维荧光扫描等手段对臭氧预氧化前后水质进行了系统分析

并对预处理前后的二级出水采用曝气生物滤池进行了对比处理研究。结果表明

在二级出水平均COD为77.8 mg·L-1

臭氧投量为10 mg·L-1

接触时间为4 min的条件下

臭氧预氧化对COD的平均去除率为11.4%

对UV254的平均去除率为23.9%。臭氧预氧化能够去除水中含不饱和键以及溶解性微生物产物和腐殖酸类等难降解有机物

改变了废水中有机物的分子结构

使水中分子量小于1×103的有机物比例从53%提高至67%。预氧化后废水经BAF处理

其COD去除量较二级出水直接经BAF处理提高了14.9%。

Abstract

Refractory organics are the main composition of residual COD in the effluent of s petrochemical biological wastewater treatment plant.It is the bottleneck in improving water quality with biological methods.The effect of pre-ozonation on a typical petrochemical biological effluent was studied.Molecular weight distribution(MWD)

3-D fluorescence scan

gas chromatography-mass spectrometry(GC-MS)were used to analyze water quality before and after pre-ozonation.The removal rates of COD and UV254 were 11.4% and 23.9% respectively with an ozone dosage of 10 mg·L-1 and a duration of 4 min.Pre-ozonation could remove the refractory organics

such as soluble microbial products(SMP)and humic acids

including some unsaturated bond organics.Pre-ozonation changed the MWD of the wastewater

increasing the percentage of small-molecular-weight organics(<1×103)from 53% to 67%.And it greatly improved the ability of bio-treatment performance of wastewater.Compared with the original biological effluent

COD removal rate of pre-oxidation wastewater treated by the biological aerated filter(BAF)increased by 14.9%.

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