Indian Institute of Technology, Roorkee, India.
J Environ Manage. 2010 May;91(5):1055-62. doi: 10.1016/j.jenvman.2009.11.013. Epub 2010 Jan 22.
The impact of riverbank filtration (RBF) on the treatment of water from the River Yamuna at Mathura, which has disagreeable visual properties, has been investigated. The dissolved organic carbon (DOC) and colour of the river water were 4.0-6.8mg/L and 40-65 colour units (CU), respectively. Pre-chlorination is in practice to improve raw water quality. Chlorine doses as high as 60mg/L ahead of the water treatment units reduced colour by about 78%. Removal of DOC and UV-absorbance was less than 18%. In comparison to direct pumping of the river water, collection of water through RBF resulted in the reduction of DOC, colour, UV-absorbance and fecal coliforms by around 50%. However, riverbank filtrate did not conform to the drinking water quality standards. Therefore, riverbank-filtered water along with the Yamuna water were ozonated for different durations. To reduce DOC to the desired level, the dose of ozone required for the riverbank filtrate was found to be considerably less than the ozone required for the river water. RBF as compared to direct pumping of Yamuna water appears to be effective in improving the quality of the raw water.
对位于马图拉的亚穆纳河河水（具有令人不悦的视觉属性）进行河岸过滤（RBF）处理的效果进行了考察。河水的溶解有机碳（DOC）和色度分别为 4.0-6.8mg/L 和 40-65 色度单位（CU）。预氯化的实际应用是为了改善原水水质。在水处理单元之前投加高达 60mg/L 的氯，可将色度降低约 78%。DOC 和紫外吸光度的去除率小于 18%。与直接抽取河水相比，通过 RBF 采集的水可将 DOC、色度、紫外吸光度和粪大肠菌群减少约 50%。然而，河岸滤出水中仍不符合饮用水质量标准。因此，对河岸过滤水和亚穆纳河水进行了不同时间的臭氧氧化处理。为了将 DOC 降低到所需水平，发现用于河岸滤出物的臭氧剂量明显低于用于河水的臭氧剂量。与直接抽取亚穆纳河水相比，RBF 似乎可有效地改善原水水质。
