改性沸石对地下水中Ca^(2+)、Mg^(2+)吸附性能研究

Research on Modified Zeolite Adsorption Properties for Ca^(2+), Mg^(2+) in Groundwater

研究水样取自晋城某矿区4个主要含水层,经内梅罗指数法评价后第四含水层未达Ⅲ级标准,利用HCl改性沸石对水样进行处理。通过控制HCl质量分数和酸化处理时间,并对处理后水样中Ca^(2+)和Mg^(2+)浓度进行检测。结果显示,当HCl酸化改性质量分数为8.5%,酸化处理沸石时间为30 min时,吸附后Ca^(2+)质量浓度最低降至183.55 mg/L,Mg^(2+)质量浓度最低为88.46 mg/L,总硬度降低至463.04 mg/L,处理后水样达到Ⅲ级标准。

The research samples were taken from Jincheng in a mining area of 4 main aquifers, the fourth aquifer did not reach the standard of grade III after the evaluation of Nemero index method. The water samples were treated with HCI modified zeolite by controlling HCI concentration and acidification time, and examining the concentrations of Ca^2＋ and Mg^2＋ in the treated water samples. The result showed that when the concentration of HCI acidified was 8.5%, the time of zeolite acidification was 30 min, the concentration of Ca^2＋ decreased to the lowest 183.55 mg/L, the concentration of Mg^2＋ was the lowest 88.46 mg/L, total hardness decreased to 463.04mg/L, After treatment, the water sample reached the grade III standard.