华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (6): 127-132.

• 环境科学与技术 • 上一篇    下一篇

生物滤池耦合臭氧处理乙烯污水的工业化试验

谢文玉 钟理   

  1. 华南理工大学 化工与能源学院,广东 广州 510640
  • 收稿日期:2006-05-30 出版日期:2007-06-25 发布日期:2007-06-25
  • 通信作者: 谢文玉(1970-),女,博士生,副教授,主要从事环保化学工艺与清洁生产研究. E-mail:celzhong@ scut.edu. cn
  • 作者简介:谢文玉(1970-),女,博士生,副教授,主要从事环保化学工艺与清洁生产研究.
  • 基金资助:

    广东省科技计划项目(2005A40201002 )

Pilot Test of Ethylene Wastewater Treated by Coupling Biological Filter and Ozonization

Xie Wen-yu  Zhong Li   

  1. School of Chemical and Energy Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2006-05-30 Online:2007-06-25 Published:2007-06-25
  • Contact: 谢文玉(1970-),女,博士生,副教授,主要从事环保化学工艺与清洁生产研究. E-mail:celzhong@ scut.edu. cn
  • About author:谢文玉(1970-),女,博士生,副教授,主要从事环保化学工艺与清洁生产研究.
  • Supported by:

    广东省科技计划项目(2005A40201002 )

摘要: 进行了隔离曝气生物滤池相合臭氧氧化技术处理乙烯生产过程轻污染水的工业化试验,探讨了不同操作参数如水力停留时间(HRT) 、臭氧化空气流量、溶解氧浓度、反冲洗等对污染物如COD cr 、氨氮、挥发酚、硫化物和油类处理效果的影响,分析了隔离曝气生物滤池耦合臭氧氧化处理污水的机理.实验结果表明:当污水流量为o. 8 - 1. 5 m3/h ,采用低臭氧投加量(0.5 -1 mglL) 、HRT 为1. 3 -2.5 扎进水COD cr 不超过100mg/L、氨氮含量不超过5.3 mg/L、挥发酚含量不超过3.0mg/L 、油含量不超过3.5 mg/L 、硫化物含量不超过1.29mg/L 时,出水COD cr和油的平均含量分别为29. 1 和0.38 mg/L ,出水氨氮最大含量小于0.4mg/L、出水挥发酚与硫化物最高含量仅为0. 12 和0. 135 mg/L , CODcr、油、氨氮、挥发酚与硫化物的平均去除率分别为63.1% 、84.2% 、96.8% 、89.8% 和88.6% ,出水达到回用水标准.

关键词: 臭氧, 氧化, 生物滤池, 耦合, 乙烯污水

Abstract:

A pilot test of low-concentration wastewater in ethylene production treated by coupling isolated-aeration biological filter and ozonization was conducted. The effects of different operation parameters such as the hydraulic retention time (HRT) , the ozonized air flowrate , the dissolved oxygen concentration and the backwashing on the degradation of pollutants including COD cr,ammonium-nitrogen , volatile phenol , sulfide and oil were investigated.
Moreover , the degradation mechanism of low-concentration ethylene wastewater via the coupling treatment was analyzed.Experimental results show that , with a wastewater feed flowrate of 0. 8 - 1. 5 m3/h , a low ozone dosage of 0. 5 - 1 mg/L, a HRT of 1. 3 - 2. 5h , and when the contents of inf1uent CODcr ,ammonium-nitrogen , volatile phenol ,oil and sulfide are respectively not more than 100 , 5. 3 , 3. 0 , 3. 5 and 1. 29 mg/L , the effluent is of an average COD cr of  29. 1 mg/L , an average oil content of O. 38 mg/L , a maximum ammonium-nitrogen content of less than 0. 4 mg/L ,a maximum volatile phenol content of 0. 12 mg/L and a maximum sulfide content of 0. 135 mg/L , and the average removals of CODcr, oil , ammonium-nitrogen , volatile phenol and sulfide respectively reach 63. 1 %, 84.2% ,96. 8% , 89. 8% and 88. 6%. It is thus concluded that the effluent after the coupling treatment satisfies the demands of recycled and reused water.

Key words: ozone, oxidation, biological filter, coupling, ethylene wastewater