活性炭深度处理工艺用于地下回灌的水质研究
Water Quality Study of Granular Activated Carbon Treatment Used for Groundwater Recharge
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摘要: 以北京高碑店污水处理厂二级生化出水为对象,研究了用于地下回灌的活性炭三级处理工艺.活性炭可有效降低DOC,UV-254和COD,部分去除可吸附有机卤化物(AOX).再经过土壤含水层处理,约90%的可吸附有机溴化物(AOBr)可被去除.Ames试验结果显示活性炭工艺可有效降低二级生化出水中的致突物.GC/MS分析表明,活性炭吸附可降低有机物含量,再经土壤含水层处理,大部分有机物及优先控制的污染物可被去除.Abstract: The secondary effluent from Gaobeidian Sewage Plant was treated with the granular activated carbon(GAC)tertiary process for groundwater recharge.DOC,UV-254 and COD could be effectively decreased,and absorbable organic halogens(AOX)was partially removed by GAC adsorption.GAC adsorption and soil-aquifer treatment(SAT)removed around 90% absorbable organic bromine(AOBr).Ames test results revealed that GAC adsorption could remove mutagens effectively.GC/MS analysis showed that GAC adsorption could reduce the concentration of organic compounds.After SAT,most organic compounds and priority-control compounds could be eliminated.
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