Abstract：In order to increase the microbial activity and the degradation efficiency of sewage of activated sludge, Ferrite enhanced activated sludge process was taken as a new wastewater biological treatment method based on magnetic effect. An appropriate amount of cheap ferrite magnetic powder were added into the conventional activated sludge process reactors to improve the microbial activity, MLSS, the removal efficiency of NH3-N from wastewater treatment and the deposition rate of activated sludge. The results show that after adding ferrite to the bioreactor, the start-up time for the reactor was cut down by 2 d; when the dosages of ferrite were 375 mg/L and 2 500 mg/L, the removal rates of NH3-N were increased by 26% and 27%,respectively. Meanwhile, the hydraulic retention time was reduced by 1 h after adding ferrite to the bioreactor, and the optimum range of temperature and DO of the reactor were expanded. This method can serve as a new method for the rural sewage treatment.
万树兴, 李继容, 杜甫义, 马新华, 解清杰. 铁氧体对活性污泥法处理农村生活污水中氨氮的影响[J]. 排灌机械工程学报, 2015, 33(6): 499-503.
Wan Shuxing, Li Jirong, Du Fuyi, Ma Xinhua, Xie Qingjie. Effect of ferrite on ammonia nitrogen removal of rural sewage treated by activated sludge. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(6): 499-503.
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