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本文以印度农村地区为背景,介绍了发展中国家农村地区运用的一种家用水中除铁方法。通过化验室研究,评价了单独采用高锰酸钾、陶瓷烛式过滤器或这两者联用去除增铁自来水中铁的潜力。采取了分批试验。把高锰酸钾缓慢搅拌5min沉淀2.5hrs后表明,试验的水样(pH为6.0￣10.0,初始铁浓度为3.5￣10.0mg/L)除铁率在79￣99%幅度内。高锰酸钾最佳用量在1.6和8.0mg/L之间。pH较高时,去铁率一般也比较高。单独使用陶瓷烛式过滤器试验表明了不能有效除铁,去除率仅为7和20%之间。但是当水与高锰酸钾混合5min后装入过滤器观察除铁率高达91￣99%。大肠杆菌可疑性试验表明了加添高锰酸钾时,细菌去除率提高了。研究结果指出高锰酸钾和陶瓷烛式过滤器联用可以在发展中国家农村地区用作家庭水中除铁。
In the context of Indian rural areas, this article describes a method of removing iron from household water used in rural areas of developing countries. Laboratory studies evaluated the potential of using potassium permanganate alone, ceramic candle filters, or both to remove iron from tap water. Taken in batches. The potassium permanganate slowly stirred for 5min precipitation 2.5hrs after the test showed that the water samples (pH 6.0 ~ 10.0, the initial iron concentration of 3.5 ~ 10.0mg / L) iron rate in the range of 79 ~ 99%. The optimum amount of potassium permanganate between 1.6 and 8.0mg / L. When the pH is higher, the iron removal rate is generally higher. Tests using ceramic candle filters alone showed that iron removal was not effective and the removal rate was only between 7 and 20%. However, when water and potassium permanganate mixed 5min after the filter was observed iron removal rate as high as 91 ~ 99%. Escherichia coli suspicious tests showed that the addition of potassium permanganate, bacterial removal rate increased. The results indicate that the combination of potassium permanganate and ceramic candle filters can be used as household iron removal in rural areas of developing countries.