| 利用BAF提取糖蜜酒精废液中钾的实验研究 |
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| 引用本文： | 陆燕勤,张学洪,朱义年,朱竹江,张琴.利用BAF提取糖蜜酒精废液中钾的实验研究[J].环境科学与技术,2009,32(7). |
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| 作者姓名： | 陆燕勤 张学洪 朱义年 朱竹江 张琴 |
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| 作者单位： | 1. 桂林工学院资源与环境工程系广西环境工程与保护评价重点实验室,广西,桂林,541004
2. 桂林工学院资源与环境工程系 |
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| 基金项目： | 广西环境工程与保护评价重点实验室研究基金，广西高校人才小高地环境工程创新团队基金 |
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| 摘 要： | 研究α-改性沸石对钾的吸附性能,分离和提取钾元素。通过静态试验,得出了改性沸石对K+的吸附容量为36.13mg/g沸石,当温度为25℃时,吸附等温线可以用Freundlich吸附公式来进行拟合,相关系数R2>0.983。利用α-改性沸石为介质的BAF反应器对糖蜜酒精废液进行提钾的实验研究,结果表明,在温度25～30℃,进水COD浓度1500～1800mg/L,NH3-N浓度180～210mg/L,钾(K+)浓度0.65～0.75g/L、pH7～9,水力负荷3.0m3(/m.2d)和气水比为3:1条件下,系统稳定运行,钾的吸附率达90%以上,洗脱富钾液中钾(K+)浓度可达38g/L。为生态型提钾的工程应用奠定基础。
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| 关 键 词： | 糖蜜酒精废液 BAF α-改性沸石 钾 |
Experimental Study on BAF to Extract Potassium from Molasses Alcohol Wastewater |
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| LV Yan-qin,ZHANG Xue-hong,ZHU Yi-nian,ZHU Zhu-jiang,ZHANG Qin.Experimental Study on BAF to Extract Potassium from Molasses Alcohol Wastewater[J].Environmental Science and Technology,2009,32(7). |
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| Authors: | LV Yan-qin ZHANG Xue-hong ZHU Yi-nian ZHU Zhu-jiang ZHANG Qin |
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| Institution: | 1.Department of Resource and Environmental Engineering;2.Guangxi Key Laboratory of Environmental Engineering and Protection Assessment;Guilin University of Technology;Guilin 541004;China |
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| Abstract: | Zeolite absorption ability of potassium as well as separation and extraction of potassium from molasses alcohol wastewater were studied.Static experiment showed that potassium absorption volume was 36.13mg/g zeolite,and adsorption isotherm can be well fit with Freundlich equation when temperature was 25℃,with relative coefficient above 0.983.The study on BAF to extract potassium from molasses alcohol wastewater using zeolite showed that the adsorbent rate of potassium was more than 90% and potassium concentration of elution liquid reached 38g/L under the conditions of temperature 25～30℃,influent COD concentration 1,500～1,800mg/L,NH3-N concentration 180～210mg/L,K2O concentration 0.65～0.75g/L,pH 7～ 9,hydraulic load 3.0m3(/m2.d)and air-to-water rate 3:1.The study will provide experimental basis for the application of potassium extraction. |
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| Keywords: | BAF |
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