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| 鸟粪石结晶法预处理垃圾渗滤液中高浓度氨氮的研究 | |
| 引用本文： | 王健,王长秋,鲁安怀,凌辉,范晨子.鸟粪石结晶法预处理垃圾渗滤液中高浓度氨氮的研究[J].矿物学报,2010,30(1). |
| 作者姓名： | 王健 王长秋 鲁安怀 凌辉 范晨子 |
| 作者单位： | 1. 北京大学,造山带与地壳演化教育部重点实验室,北京,100871 2. 北京大学地球与空间科学学院,北京,100871 3. Key Laboratory of Orogenic Belts and Crustal Evolution,MOE,Peking University,Beijing 100871,China |
| 基金项目： | 北京市教育委员会产学研合作项目 |
| 摘 要： | 利用鸟粪石结晶法预处理垃圾渗滤液中的高浓度氨氮,通过单因素实验和正交实验探讨了pH值、添加剂种类、添加剂比例、反应时间4个因素对氨氮去除率的影响,结合反应过程中的经济成本得出鸟粪石结晶法最佳工艺条件为:pH=9,添加剂为MgC12·6H2O和Na2HPO4·12H2O,n(Mg2+):n(NH4+):n(PO43-)=1:1:1,反应时间15min,氨氮去除率达到90.13%,剩余氨氮在300mg/L以下。通过XRD和ESEM分析,沉淀产物为鸟粪石。实验表明鸟粪石结晶法可以有效去除垃圾渗滤液中的高浓度氨氮,为后续使用生物法处理提供条件,也可以弥补矿物吸附法去除氨氮的不足。可将其与生物法、矿物吸附法等方法组合使用,综合处理垃圾渗滤液。 |
| 关 键 词： | 垃圾渗滤液 鸟粪石 氨氮 |
Removal of Ammonium-Nitrogen as Struvite Crystallization from Landfill Leachate |
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| WANG Jian,WANG Chang-qiu,LU An-huai,LING Hui,FAN Chen-zi.Removal of Ammonium-Nitrogen as Struvite Crystallization from Landfill Leachate[J].Acta Mineralogica Sinica,2010,30(1). | |
| Authors: | WANG Jian WANG Chang-qiu LU An-huai LING Hui FAN Chen-zi |
| Institution: | Key Laboratory of Orogenic Belts and Crustal Evolution/a>;MOE/a>;Peking University/a>;Beijing 100871/a>;China |
| Abstract: | The method of struvite crystallization has been utilized to remove high concentrations of ammonium-nitrogen in landfill leachate.The effects of the type of precipitating agent,pH value,ratio of precipitating agent and reaction time were studied on the removal rates of ammonium-nitrogen in single-factor experiments and orthogonal tests.The removal rate of ammonium could reach 90.13% with the residual NH4 +-N less than 300 mg/L,under the following optimal experimental conditions with costs as low as possible:... |
| Keywords: | landfill leachate struvite ammonium-nitrogen |
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