摘要
进行了隔离曝气生物滤池耦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CODcr、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0.8-1.5m^3/h,采用低臭氧投加量（0.5-1mg/L）、HRT为1.3-2.5 h、进水CODcr不超过100mg/L、氨氮含量不超过5.3mg/L、挥发酚含量不超过3.0mg/L、油含量不超过3.5mg/L、硫化物含量不超过1.29mg/L时,出水CODcr和油的平均含量分别为29.1和0.38mg/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0.135mg/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.
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 CODer, 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 m^3/h, a low ozone dosage of 0. 5 - 1 mg/L, a HRT of 1.3 -2. 5h, and when the contents of influent CODcr ,ammonium-nitrogen, volatile phenol, oil and sulfide are respectively not more than 100, 5. 3, 3. 0, 3. 5 and 1.29mg/L, the effluent is of an average CODcr of 29. 1 mg/L, an average oil content of 0. 38 mg/L, a maximum ammonium-nitrogen content of less than 0. 4 mg/L, a maximum volatile phenol content of 0. 12mg/L and a maximum sulfide content of 0. 135 mg/L, and the average removals of CODer, 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.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第6期127-132,共6页
Journal of South China University of Technology(Natural Science Edition)
基金
广东省科技计划项目(2005A40201002)
关键词
臭氧
氧化
生物滤池
耦合
乙烯污水
ozone
oxidation
biological filter
coupling
ethylene wastewater
