| GFH用于提高再生水回用景观水水质研究 |
| 摘要点击 4739 全文点击 1953 投稿时间：2009-12-24 修订日期：2010-03-15 |
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| 中文关键词 GFH 再生水 吸附 污染组分 |
| 英文关键词 granulated ferric hydroxide (GFH) reclaimed water adsorption pollution component |
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| 中文摘要 |
| 研究了再生水回用于景观水体过程中，GFH（granulated ferric hydroxide)对磷、DOM和氮等污染物的吸附去除机制.结果表明，GFH对磷的去除效果最显著，TP浓度为0.059～0.725 mg/L、PO3-4-P浓度为0.004～0.684 mg/L的进水，GFH出水能够实现TP<0.05 mg/L（去除率91.1%）、PO3-4-P<0.023 mg/L（去除率95.4%）；GFH优先去除DOM中大分子的腐殖酸，实现对DOM 28.5%的去除率，同时提高DOM的芳香性；由于GFH和臭氧的强氧化性，再生水中NH+４-N和NO-2-N可发生硝化反应，NH+４-N平均去除率达37.3%，NO-2-N平均去除率达59%. |
| 英文摘要 |
| In order to prevent increased algae growth for the reuse of reclaimed water as landscape water, the removal mechanism of phosphate, DOM and nitrogen by adsorption onto GFH was studied. The result showed that the removal rate of phosphate was the highest, when the influent concentration of TP was 0.059-0.725 mg/L, and the concentration of PO3-4-P was 0.004-0.684 mg/L, the effluent concentration of TP was less than 0.05 mg/L(removal rate was 91.1%), and of PO3-4-P was less than 0.023 mg/L(removal rate was 95.4%) by adsorption onto GFH. GFH could remove macromolecular DOM(mainly fulvic acids) preferentially, and removal rate of DOM was 28.5%, but which would improve the aromaticity proportion of DOM. Because of the strong oxidizing property of GFH and O3, NH+４-N and NO-2-N occurred nitrification in reclaimed water, the average removal rates of NH+４-N and NO-2-N were 37.3% and 59% respectively. |
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