活性氧化铝去除饮水中共存砷氟的试验研究

每个周期终点均由出水氟浓度决定，除砷容量变化不明显，而除氟容量则随着运转周期的增加而降低，其变化规律与指数曲线方程Ｌｏｇ（ｑ－Ｋ１）＝ａ－ｂｘ非常吻合；再生脱砷氟均不彻底，累积吸附量的再生效率均随再生次数的增加而减少，其变化规律均与指数曲线方程Ｌｏｇ（η－Ｋ２）＝ａ－ｂｘ相当吻合；累积残留砷氟随再生次数增加而增加，与指数曲线方程Ｌｏｇ（Ｋ３－ｙ）＝ａ－ｂｘ非常吻合。此三条规律证明：活性氧化铝最终能保持一个稳定的除砷除氟容量。

Study of arsenic and fluoride removal from drinking water by activated alumina absorption

The terminal point of a cycle is determined by the fluoride concentration of treated water.The change of arsenic removal capacity is not significant.The removal capacity of fluoride drops down along with inereasing the number of operating cycle times,and is in accord with the equation of Log(q-Ki)+ a-bx.The effect of dearsenlfying and defluorination are perfect not the by regeneration.The regenerative efficiency of accumulated absorptive quantity is cut down along increasing of regeneration cycles.This change is in accord with the equation Log(η-K2)=a-bx.The relevant quantity of accumulated remaant of arsonie and fluoride inercases along with the inerease of regeneration times.The rule of change is in aeeord with Log(K3-Y)=a-bx,These three rules prove that the aetivated alumina eould finally keep a stable capacity to remove arsenic and fluoride.