【摘要】 常温下用水解法处理ＢＦ４废水．实验采用铝盐作主水解剂，试剂Ａ作助水解剂，ｐＨ值小于３，在常温条件下实现了对ＢＦ４的高效水解．研究结果表明，ＢＦ４∶Ａｌ３＋∶Ａ的质量比为１∶０．８∶０．１，水解时间６～３ｈ，水解率达到９９．５％以上．使用助水解剂Ａ，缩短了水解时间，减少了铝盐用量，对高浓度的ＢＦ４废水效果尤为显著，水解时间可缩短一半，主水解剂用量可减少１／５，处理后出水中的ＢＦ４含量可降到１０ｍｇ／Ｌ以下．更多还原

【Abstract】 In this paper, a hydrolysis treatment method of tetrafluorboric anion waste water at normal temperature is discussed. In experiments, aluminum salt was used as main hydrolyst and reagent A as assistant hydrolyst. At normal temperature, with acidity less than 3, highly efficient hydrolysis of tetrafluorboric anion was achieved. The results showed that with mass ratio 1:0.8:0.1 of BF 4 : Al 3+ : A and hydrolysis time 3～6h, the hydrolysis rate reached 99.5 per cent or above, and assistant reagent A could shorten the hydrolysis time and cut down the adding amount of aluminum salt. Especially, when applied on tetrafluorboric anion waste water of high concentration,, the method could obtain a desirable effect. The hydrolysis time could be reduced a half and the amount of main hydrolyst could be shortened 1/5. While BF 4 concentration in output water could be decreased to less than 10mg/L.更多还原