Abstract：In order to ameliorate the inferior efficiency of manganese removal and the lengthy period of maturation concerned in the common filter medium, the filter media for manganese removal were prepared by modifying the original river sand The effects of hydraulic retention time, pH value, DO, and Mn2+ concentration on manganese removal efficiency were studied by the filtration test of simulation groundwater. The mechanism of manganese removal was also preliminarily discussed in the test. The results show that the Mn2+ concentration of effluent is constantly lower than 0.1mg/L, which conforms with the state standards for drinking water; under the optimum conditions, the water residence time is about 24min, the content of dissolved oxygen is about 7mg/L, the pH value of the inflow is neutral or alkaline, and the concentration of manganese is no more than 2mg/L. The membrane of modified river sand surface plays a crucial role. The mechanism of manganese removal that is adsorption and self-catalysis processes is preliminary confirmed based on scanning electron microscopy and X-ray spectrum analysis for the filtration membrane of modified river sand surface.
张凤君;朱树阳;钟爽;苏可佳;卫达. 改性河砂过滤处理高锰地下水[J]. , 2012, 30(5): 27-32.
ZHANG Fengjun;ZHU Shuyang;ZHONG Shuang;SU Kejia;WEI Da. Filtration Treatment on Groundwater with High Manganese for Modified River Sand. , 2012, 30(5): 27-32.