超声吹脱法处理养猪场废水中氨态氮

超声吹脱法处理养猪场废水中氨态氮(8800字)
摘  要：养殖废水具有典型的“三高”特征，高COD、高氨氮、高SS，而养殖业是薄利行业，无法承担较高的污水处理成本，目前的处理工艺大部分以处理有机物为主，使COD得到较大幅度的削减，但氨氮的削减量不够，难以达到排放的要求，而“十二五”期间国家将氨氮纳入全国主要水污染减排约束性控制指标，并将农业源污染防治纳入环境保护的重要议程，从而养殖场废水中氨氮的处理成为目前亟待解决的问题之一。
超声吹脱处理养猪场废水中氨氮的试验研究结果：pH、氨氮初始浓度等因素与单独吹脱、单独超声作用下的影响规律基本一致。在最佳条件下，能使养猪场废水中氨氮降解率提高到88.06%，出水浓度为78.4mg/L，达到排放标准。
关键词：养猪场废水；氨态氮；超声吹脱法；去除

Removal of Ammonia Nitrogen in Piggery Wastewater by Ultrasound Stripping
Abstract:Livestock wastewater is typical for high concentration of ammonia, COD and SS.Aquaculture industry which belongs to a small profit industry,can not afford the high costs of waster treatment.Nowadays,the major objective of wastewater treatment was organic compound,so COD has a more substantial reduction and the reduction of ammonia is not enough to meet the requirement. Ammonia nitrogen will be one of the binding targets of water pollutants during the 12th Five-year Plan.It is only very recently that the removal of ammonia nitrogen in Piggery Wastewater is brought into focus.
The study of removing ammonia nitrogen in piggery wastewater by ultrasonic stripping indicated that the effect of pH value including other factors etc. was similar to the condition of stripping or ultrasound. On the optimum condition, the removal efficiency of NH3-N reached 88.06% and the remanent NH3-N concentration was 78.4mg/L which was reach the discharge standard of pollutants for livestock and poultry breeding.
Key words: Piggery wastewater; Ammonia-nitrogen; Ultrasound stripping; Remove

本次实验采用超声吹脱法处理养猪场废水以去除氨氮，从技术上探寻其可行性。这将为养猪场废水中氨氮的去除提供一个新的思路或技术途径，提供相应的技术参数，同时，废水生化性的提高也为养猪场废水的后续生化处理提供更好的处理条件，从而保证系统中的稳定达标。