臭氧氧化-苦草深度处理猪场废水对无机营养盐的去除效果初探

王俊力; 陈桂发; 刘福兴; 宋祥甫; 邹国燕

文章摘要

王俊力,陈桂发,刘福兴,宋祥甫,邹国燕.臭氧氧化-苦草深度处理猪场废水对无机营养盐的去除效果初探[J].农业环境科学学报,2016,35(11):2195-2201.

臭氧氧化-苦草深度处理猪场废水对无机营养盐的去除效果初探

The efficiency of combined treatment of ozonation and Vallisneria spiralis in removing inorganic nutrients in piggery wastewater

投稿时间：2016-04-21

DOI：10.11654/jaes.2016-0560

中文关键词: 臭氧氧化，猪场废水，深度处理，苦草，氮，磷

英文关键词: ozonation, piggery wastewater, advanced treatment, Vallisneria spiralis, nitrogen, phosphorus

基金项目:国家水体污染控制与治理科技重大专项(2012ZX07101-004)

作者	单位	E-mail
王俊力	上海市农业科学院, 上海 201403
陈桂发	上海市农业科学院, 上海 201403
刘福兴	上海市农业科学院, 上海 201403
宋祥甫	上海市农业科学院, 上海 201403
邹国燕	上海市农业科学院, 上海 201403	zouguoyan@263.net

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中文摘要:

进行了经氧化塘和人工湿地处理的猪场废水的臭氧氧化-苦草深度处理研究，考察了不同浓度臭氧氧化处理无机营养盐(N、P)含量的变化，和臭氧氧化-苦草处理对去除无机营养盐的作用。结果表明，三个臭氧投加浓度(10、30、50 mg·L^-1)分别使NO₂^-含量降低7.7%、17.6%和21.4%，使NO₃^-增加5.7、4.2和2.4倍，使PO₄^3-增加40.1%、26.0%和0.7%，臭氧氧化-苦草处理使TN、NH₄⁺、NO₂^-、TP含量分别降低11.4%~15.7%、29.9%~34.2%、22.6%~40.7%和36.0%~38.0%，使NO₃^-含量增加0.4~1.0倍。结果表明，臭氧氧化可以使N、P的形态发生变化，且低浓度的臭氧投加就能达到显著效果，苦草显著促进臭氧氧化后猪场处理尾水中无机营养盐的去除。

英文摘要:

Piggery wastewater contains a high concentration of inorganic nutrients, and piggery effluent from conventional biological treatment processes still contain nutrient-rich matters, which poses a significant threat to surface and groundwater and requires subsequent treatment. In this research, piggery wastewater pretreated from oxidation pond followed by the constructed wetland was further treated by ozonation and Vallisneria spiralis. We measured the changes of inorganic nutrients(N and P) content in the piggery wastewater after exposed to different concentrations of ozone(AO1 10mg·L^-1、AO2 30 mg·L^-1、AO3 50 mg·L^-1) for 30 min followed by growing Vallisneria spiralis for 4 weeks. We found that three levels of ozonation treatment decreased NO₂^- by 7.7%, 17.6% and 21.4%, respectively, and increased NO₃^- by 5.7, 4.2 and 2.4 times, and PO₄^3- by 40.1%, 26.0% and 0.7%, respectively. After the treatment of Vallisneria spiralis, TN, NH₄⁺, NO₂^- and TP were decreased by 11.4%~15.7%, 29.9%~34.2%, 22.6%~40.7% and 36.0%~38.0%, respectively, while NO₃^- was increased by 0.4~1.0 times. Our results indicated that ozonation could lead to dramatic changes of the chemical forms of inorganic nutrients even at a low ozone concentration, and culture of Vallisneria spiralis could obviously reduce the concentration of inorganic nutrients in the ozone-treated piggery wastewater.

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