蛇纹石饮水除砷效果实验研究

Study on the effect of arsenic remova l from drinking water Using Serpentine

目的研究确定蛇纹石除砷效果和最佳除砷条件,为地方性砷中毒病区提出新的饮水除砷措施。方法通过实验室检验和观察,利用单因素分析和正交实验方法确定蛇纹石不同粒度、高砷水的pH值及不同接触时间对除砷效果的影响。结果蛇纹石除砷效率最佳的粒度为0.300～0.216mm;原水硬度以中硬水、软水最好。接触时间与除砷效果成正相关,原水的适宜pH值范围为6.5～8.5。结论蛇纹石可能是一种新的除砷吸附剂。

Objective Study on effect of arsenic removal an d determine the optimum condition of arsenic removal with serpentine ,provide a new measure to prevent Endemic arsenic poisoning f or the extensive disease areas.Methods Determine the effect of each factor to arsenic r emoval capacity of Serpentine by the methods of single factor analysis an d orthogonal experi-ment .Results The factors influenced the effect of arsenic removal from drinking water significantly in order were :contac t time ,size was 0.300～0.216mm.The di fference of arsenic removal capacities of Serpentine was not significan t when pH value of water was within 6.5～8.5(P>0.05).Conclusions This kind of method of arsenic removal by Serpentine can apply.It may be a new adsorptive dose with arsenic removal.[