非金属矿
非金屬礦
비금속광
NON-METALLIC MINES
2015年
3期
72-74
,共3页
铁屑%麦饭石%地下水%阴离子污染%PRB
鐵屑%麥飯石%地下水%陰離子汙染%PRB
철설%맥반석%지하수%음리자오염%PRB
iron iflings%medical stone%groundwater%anions%PRB
针对地下水中阴离子Cr(Ⅵ)、NO3-难以利用一种可渗透反应墙(PRB)活性材料有效修复的问题，构建铁屑强化麦饭石PRB修复系统去除地下水中Cr(Ⅵ)和NO3-的试验模型。结果表明，铁屑强化麦饭石2#（麦饭石与铁屑按1∶2分层）和3#（麦饭石与铁屑按1∶2混合）柱对Cr(Ⅵ)和NO3-的去除率较1#（麦饭石）柱提高6~8倍，3#柱去除效果最好且稳定，对Cr(Ⅵ)和NO3-的平均去除率分别为97.7%和94.09%，出水质量浓度分别小于0.23 mg/L、1.18 mg/L。由此可见，铁屑强化麦饭石PRB系统修复地下水中Cr(Ⅵ)和NO3-污染物是可行和有效的。
針對地下水中陰離子Cr(Ⅵ)、NO3-難以利用一種可滲透反應牆(PRB)活性材料有效脩複的問題，構建鐵屑彊化麥飯石PRB脩複繫統去除地下水中Cr(Ⅵ)和NO3-的試驗模型。結果錶明，鐵屑彊化麥飯石2#（麥飯石與鐵屑按1∶2分層）和3#（麥飯石與鐵屑按1∶2混閤）柱對Cr(Ⅵ)和NO3-的去除率較1#（麥飯石）柱提高6~8倍，3#柱去除效果最好且穩定，對Cr(Ⅵ)和NO3-的平均去除率分彆為97.7%和94.09%，齣水質量濃度分彆小于0.23 mg/L、1.18 mg/L。由此可見，鐵屑彊化麥飯石PRB繫統脩複地下水中Cr(Ⅵ)和NO3-汙染物是可行和有效的。
침대지하수중음리자Cr(Ⅵ)、NO3-난이이용일충가삼투반응장(PRB)활성재료유효수복적문제，구건철설강화맥반석PRB수복계통거제지하수중Cr(Ⅵ)화NO3-적시험모형。결과표명，철설강화맥반석2#（맥반석여철설안1∶2분층）화3#（맥반석여철설안1∶2혼합）주대Cr(Ⅵ)화NO3-적거제솔교1#（맥반석）주제고6~8배，3#주거제효과최호차은정，대Cr(Ⅵ)화NO3-적평균거제솔분별위97.7%화94.09%，출수질량농도분별소우0.23 mg/L、1.18 mg/L。유차가견，철설강화맥반석PRB계통수복지하수중Cr(Ⅵ)화NO3-오염물시가행화유효적。
According to the problem that anions such as chromium and nitrate from groundwater can’t be effectively removed by only one active material in PRB. The repair text of chromium and nitrate was built by medical stone strengthened by iron iflings of PRB. The results showed that the removal rate of column 2(medical stone:iron ifling=1∶2, layered) and column 3 (medical stone:iron ifling=1∶2, mixed) strengthened by iron ifling was better than column 1(medical stone) 6~8 times. The removal rate of column 3 was good and stable, Cr(Ⅵ) and NO3-can be removed by 97.7%and 94.09%respectively. The eflfuent concentration of Cr(VI) and NO3-was less than 0.23mg/L and 1.18mg/L.Therefore, the system of PRB with medical stone strengthened by iron ifling is feasible and effective for repairing Cr(Ⅵ) and NO3-in groundwater.
