摘要：
采用氯接触氧化过滤去除原水中的锰,通过试验研究了除锰滤料的成熟期、投氯量及原水pH对氯接触氧化过滤除锰效果的影响。结果表明,在过滤初期,当投氯量为进水锰浓度的3倍,且原水pH达到8.7时,该方法能迅速而有效地去除原水中的锰;当滤料成熟后,只需将原水pH保持在7.3以上,并按理论投氯量投氯(进水锰浓度的1.3倍),即可获得良好的除锰效果。滤料成熟期的长短与投氯量和原水pH有关,原水pH越高,投氯量越大,滤料成熟越快。当进水锰质量浓度为1 mg/L时,成熟期一般为1~15 d。
关键词:
原水,
除锰,
过滤,
氯接触氧化,
应急处理
Abstract:
Chlorine contact oxidation filtration process has been used for removing manganese from raw water.Through tests，the effects of the maturity of manganese-removing filter,chlorine dosage and pH on the removing efficiency of manganese by chlorine contact oxidation filtration are investigated. The results show that when chlorine dosage is 3 times of the manganese concentration in influent and pH is 8.7 in the initial filtration stage，manganese in influent can be removed rapidly and effectively. After the filtration media get mature , it is necessary only to keep the pH of raw water at above 7.3，and add chlorine according to theoretical chlorine dosage(1.3 times of manganese concentration in influent). As a result，good manganese一removing efficiency can be obtained. The length of the filter maturity is related to the dosage of chlorine and pH of raw water. The higher pH is , the more chlorine dosage and the shorter the filter maturity. When the manganese mass concentration in influent is 1 mg/L，the maturity is usually 1-15 d.
Key words:
raw water,
removal of manganese,
filtration,
contact oxidation of chlorine,
emergency treatment
中图分类号:
郦丹, 余健, 张浩江. 氯接触氧化过滤去除原水中锰的试验研究[J]. 工业水处理, 2013, 33(10): 23-26.
Li Dan, Yu Jian, Zhang Haojiang. Study on the removal of manganese from raw water by chlorine contact oxidization filtration[J]. INDUSTRIAL WATER TREATMENT, 2013, 33(10): 23-26.