臭氧氧化-苦草深度处理对猪场尾水中有机物的去除效果

doi:10.11934/j.issn.1673-4831.2017.01.012

摘要/Abstract

摘要：

利用臭氧氧化-苦草（Vallisneria natans）深度处理猪场尾水，测定了不同浓度臭氧氧化处理有机物含量和组分的变化，并考察了臭氧氧化-苦草处理去除有机物的效果。结果表明，10（AO1）、30（AO2）和50 mg·L^-1（AO3）3个臭氧投加浓度处理分别使UV₂₅₄降低15.6%、17.6%和29.4%，UV₄₃₆降低12.2%、7.6%和22.0%，使DOC/UV₂₅₄比值增加13.9%、16.7%和39.4%；臭氧氧化-苦草处理使DOC含量、UV₂₅₄和UV₄₃₆分别降低8.5%~17.6%、16.2%~35.3%和12.9%~21.8%，使DOC/UV₂₅₄比值增加10.3%~35.6%。臭氧氧化可使猪场废水中半挥发性有机物形态发生转化，可提高废水可生化性以及有机污染物的降解效率。

关键词: 臭氧氧化, 深度处理, 猪场处理尾水, 苦草, 有机物

Abstract:

Livestock wastewater falls into the category of wastewater with a high concentration of organic pollutants and hence poses a threat to the environment when disposed inappropriately. Ozonation is known as an attractive alternative to treat the wastewater. An experiment was carried out to explore effect of ozonation on concentration and composition of the organic pollutants relative to concentration of ozone and effect of the treatment of ozonation combined with cultivation of Vallisneria natans removing organic pollutants from livestock wastewater. Results show that when exposed to ozone at a rate of 10(AO1), 30(AO2) and 50 mg·L^-1(AO3) for 30 min, piggery wastewater was lowered by 15.6%, 17.6% and 29.4%, respectively, in UV₂₅₄ and by 12.2%, 7.6% and 22.0%, respectively, in UV₄₃₆ and increased by 13.9%, 16.7% and 39.4%, respectively, in DOC/UV₂₅₄. The treatment of ozonation in combination with cultivation of Vallisneria natans for 4 weeks had the wastewater lowered in by 8.5%-17.6%, 16.2%-35.3% and 12.9%-21.8% in DOC content, UV₂₅₄ and UV₄₃₆, respectively. Obviously ozonation could trigger transformation of the semi volatile organic compounds in the piggery wastewater. All the findings of this experiment indicate that when properly applied, this treatment method can be used to pretreat livestock wastewater before it is discharged, and to promote biodegradability and degrading rate of organic pollutants in the wastewater.

Key words: ozonation, advanced treatment, piggery tail water, Vallisneria natans, organics

中图分类号:

王俊力, 陈桂发, 刘福兴, 宋祥甫, 邹国燕. 臭氧氧化-苦草深度处理对猪场尾水中有机物的去除效果[J]. 生态与农村环境学报, 2017, 33(1): 84-90.

WANG Jun-li, CHEN Gui-fa, LIU Fu-xing, SONG Xiang-fu, ZOU Guo-yan. Efficiency of Ozonation Combined With Cultivation of Vallisneria natans Removing Organic Substances in Piggery Wastewater[J]. Journal of Ecology and Rural Environment, 2017, 33(1): 84-90.

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