Experimental Study on Treatment of Ammonia Nitrogen in Landfill Leachate Flowing from MBR Using Catalytic Wet Peroxide Oxidation
Experimental Study on Treatment of Ammonia Nitrogen in Landfill Leachate Flowing from MBR Using Catalytic Wet Peroxide Oxidation作者机构：College of Biological and Environmental Sciences Zhejiang Wanli University Ningbo Ocean & Fishery Institute Ningbo Lvzhou Energy Utilization Co.Ltd. Ningbo Ocean and Fishery Enforcement Detachment
出 版 物：《Meteorological and Environmental Research》 (气象与环境研究（英文版）)
年 卷 期：2013年第4卷第4期
页 面：49-52,55页
学科分类：090801[农学-水产养殖] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 082803[工学-农业生物环境与能源工程] 0908[农学-水产] 08[工学] 0828[工学-农业工程] 09[农学]
基 金：Supported by the Project of Agricultural Key Programs for Science and Technology Development of Ningbo (2011C11006) Key Spark Program Project of Science and Technology Ministry (2012GA7010011) the Science and Technology Plan Project of Ningbo City,Zhejiang Province
主 题：Catalytic Wet Peroxide Oxidation (CWPO) Ammonia nitrogen Removal rate China
摘 要：Active iron catalysts with 5A molecular sieve as the carrier were prepared firstly, and then were used in the treatment of ammonia nitrogen in landfill leachate pretreated by MBR by using CWPO, finally the effects of preparation process of catalysts, assistants and reaction conditions on the removal rate of ammonia nitrogen were analyzed. The results show that the preparation process of catalysts and assistants had great effects on catalytic activity; when steeping fluid concentration was 2 mol/L and 0.01 mol/L cerium nitrate was used as an assistant, Fe-Ce/5A catalyst roasted for 3 h at 400 ~C had a good catalytic effect. As 10 g of Fe-Ce/5A catalyst was added to water sample, and landfill leachate pretreated by MBR reacted with 15 ml of H2 02 for 30 min at 60 ~C, the removal rate of ammonia nitrogen was up to 90.8%, that is, ammonia nitrogen concentra- tion decreased from 253 to 23 mg/L, reaching the national emission standard. Besides, the kinetic analysis of ammonia nitrogen removal reveals that the removal reaction of ammonia nitrogen conformed with pseudo first order kinetic equation. Thus, it is feasible to use this method to deeply treat landfill leachate pretreated by MBR.
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