摘要
采用颗粒活性炭、粉末活性炭和活性炭负载壳聚糖对高锰地下水进行静态吸附试验,利用颗粒活性炭进行动态吸附试验,研究了静态条件吸附剂投加量、pH值、温度对吸附效果的影响,以及动态条件下浓度和流速对吸附效果的影响。结果表明,三种吸附剂吸附效果相差不大,相对而言粉末活性炭效果最好,颗粒活性炭效果与粉末活性炭较接近;静态试验中,当水中Mn2+的浓度为5mg/L时,水温25℃,pH值为6.8～7.0状态下颗粒活性碳的处理效果最好,最佳投加量为0.02g/L,即0.4g(GAC)/mg(Mn2+);动态条件下,锰离子浓度的增加、流速增大都会使初始穿透点提前。
The granular activated carbon, powdered activated carbon, and activated carbon-loaded chitosan were used in the static adsorption experiment of high Mn groundwater, and the granular activated carbon was used in the dynamic adsorption experi- ment of high Mn groundwater,which can determine the effects of adsorbent dosage, pH value, and temperature on the adsorp- tion efficacy under the static conditions and the effects of Mn2＋ concentration and flow velocity on the adsorption efficacy under the dynamic conditions. The results showed that the adsorption efficacy is similar for the three adsorbents with the powered ac- tivated carbon having a relatively better adsorption efficacy. Under the static conditions with the Mn2＋ concentration of 5 mg/L, temperature of 25 ℃, and pH value of 6. 8-7. 0, the granular activated carbon had the best adsorption efficacy and the best dos- age was 0. 02 g/L, i. e. 0. 4 g （GAC）/mg （Mn2＋）. Under the dynamic conditions, the increasing of M_n2＋ concentration and flow velocity can advance the initial penetration point.
出处
《南水北调与水利科技》
CAS
CSCD
北大核心
2013年第3期35-38,共4页
South-to-North Water Transfers and Water Science & Technology
基金
河南省自然科学基金资助项目(0511021900)
关键词
锰
地下水
吸附
静态
动态
穿透体积
Manganese
groundwater
adsorption
static
dynamic
penetration volume
