2Furukawa K, Ichimatsu Y, Harada C, et al. 2000.Nitrification of polluted urban river waters using zeolite-coated nonwovens[J]. Journal of Environmental Science and Health, 35(8): 1267-1278.
3Robert L. 2003. India cleans up polluted lakes and rivers[J].Water and Wastewater International, 18(3):14.
4Jing S R. 2001. Nutrient removal from polluted river water by using constructed wetlands[J]. Bioresource Technology,76(2): 131-135.
