| 核桃壳用于氨氮废水处理的试验 |
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| 引用本文： | 王锐刚,杨春,柴志强.核桃壳用于氨氮废水处理的试验[J].湖北农业科学,2017,56(17). |
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| 作者姓名： | 王锐刚 杨春 柴志强 |
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| 作者单位： | 山西大学环境工程系,太原,030013 |
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| 基金项目： | 山西省煤基重点科技攻关项目 |
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| 摘 要： | 将废弃生物质核桃壳改性后用于处理氨氮废水,比较了废水pH、改性核桃壳用量、废水中氨氮的初始浓度、接触时间等对氨氮去除效果的影响。结果表明,pH在3~9时,改性核桃壳去除废水中的氨氮比较合适,最大去除率可达81%;改性核桃壳处理氨氮废水(100 mg/L)采用10 g/L的用量比较合适;氨氮废水中氨氮的初始浓度对氨氮的去除有较大影响,当氨氮浓度增加到300 mg/L后,吸附量增加不再明显,吸附量可达9.3 mg/g;改性核桃壳处理氨氮废水的接触时间选择6.0 h比较合适。改性核桃壳处理氨氮废水主要以吸附为主,同时还有氧化还原的化学反应过程。
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| 关 键 词： | 核桃壳 氨氮 废水 |
Study on Walnut Shell for Treatment of Ammonia Nitrogen Wastewater |
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| WANG Rui-gang,YANG Chun,CHAI Zhi-qiang.Study on Walnut Shell for Treatment of Ammonia Nitrogen Wastewater[J].Hubei Agricultural Sciences,2017,56(17). |
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| Authors: | WANG Rui-gang YANG Chun CHAI Zhi-qiang |
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| Abstract: | The waste biomass walnut shell was modified,and then used to treat ammonia nitrogen wastewater.The effects of wastewater pH,modified walnut shell amount,initial concentration of ammonia nitrogen and contract time on the treatment of ammonia nitrogen wastewater were studied.The results showed that within 3 to 9 range of pH,the removal of ammonia nitrogen from wastewater by modified walnut shell was suitable,and the maximum removal rate could reach 81％.The suitable amount of modified walnut shell for treatment of ammonia nitrogen wastewater (concentration of 100 mg/L) was 10 g/L.The initial concentration of ammonia nitrogen had a great influent on the removal of ammonia nitrogen in ammonia nitrogen wastewater,when the concentration of ammonia nitrogen increased to 300 mg/L,the adsorption capacity could reach 9.3 mg/L.The suitable contract time of modified walnut shell for treatment of ammonia nitrogen wastewater was 6 hours.The treatment of ammonia nitrogen wastewater with modified walnut shell is mainly based on adsorption,as well as the chemical reaction of oxidation and reduction. |
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| Keywords: | walnut shell ammonia nitrogen wastewater |
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