摘要
本文从理论和实践上论证了应用化学还原法对地下水进行除铬处理作为饮用水的可行性,提出了过量投加硫酸亚铁方法解决六价铬的还原反应和三价铬的沉淀反应之间需要不同pH 值这一矛盾。这样,在处理过程中不需进行pH 值调整。通过室内和现场试验,设计了高效低成本的处理工艺。含铬地下水经处理后,除铬效率述98%,各项指标都符合饮用水标准,基本不影响原水组成,不破坏原水的有益组分。
This paper demonstates theoretically and practicelly the feasibility ofdispasing chromium by reduction in driking ground water,and puts forwardthe method of adding excessive FeSO_4,This method may solve the problemthat reduction reaction of Cr_6^+ and precipitation reaction of Cr^(3+) need diff-erent pH values.Thus,during the treatment,pH values are not adjustedand subsidiary acids and soda are not added.Through test,a disposingtechnology is designed with high efficiency and low cost.When the groundwater containing chromium is treated by this method,an efficiency of 98%of removing is obtained.All other indices are in accordance with the stan-dards,have no effect on the composition of the original water,and willnot destory the available compositions of the original water.
出处
《水处理技术》
CAS
CSCD
北大核心
1989年第6期359-365,共7页
Technology of Water Treatment
