农业环境科学学报2016，Vol.35Issue(11)：2195-2201,7.DOI:10.11654/jaes.2016-0560
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
摘要
Abstract
Piggery wastewater contains a high concentration of inorganic nutrients, and piggery effluent from conventional biological treat-ment processes still contain nutrient-rich matters, which poses a significant threat to surface and groundwater and requires subsequent treat-ment. In this research, piggery wastewater pretreated from oxidation pond followed by the constructed wetland was further treated by ozona-tion 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 NO-2 by 7.7%, 17.6%and 21.4%, respectively, and increased NO-3 by 5.7, 4.2 and 2.4 times, and PO3-4 by 40.1%, 26.0%and 0.7%, respectively. After the treatment of Vallisneria spiralis, TN, NH+4, NO-2 and TP were decreased by 11.4%~15.7%, 29.9%~34.2%, 22.6%~40.7%and 36.0%~38.0%, respectively, while NO-3 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.关键词
臭氧氧化/猪场废水/深度处理/苦草/氮/磷Key words
ozonation/piggery wastewater/advanced treatment/V allisneria spiralis/nitrogen/phosphorus分类
资源环境引用本文复制引用
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):2195-2201,7.基金项目
国家水体污染控制与治理科技重大专项 （）
