生物砂滤除微污染原水浊度试验

Study on Turbidity Removal in Micro--polluted Source Water by Biological Sand Filtration System

研究了生物砂滤柱对微污染水源水浊度的去除效果，分析了水温、进水浊度和有机物指标等对出水浊度的影响．结果表明：在常温和低温条件下，生物砂滤柱对浊度的去除率分别为76％～84％和58％～79％；相同温度条件下，进水浊度与出水浊度存在一定的相关性，相关系数R2为0．548；原水浊度高，则浊度去除率较高，原水浊度低，浊度去除率则较低．通过对进水CODMn、UV254与出水浊度的研究表明，有机物指标越高，则出水浊度越高．采用生物砂滤柱处理微污染原水，能够有效去除原水中的浊度，对提高饮用水水质，保证人体健康具有重要意义．

The effect of turbidity removal in the micro--polluted source water by biological sand filtration system has been studied. The effect of the water temperature, inflow turbidity and organic matter on effluent turbidity was analyzed. The results show that the biological sand filter can reach a turbidity removal efficiency of 76%～84% and 58%～79% under the conditions of normal and low temperature;Turbidity high in source water, the removal rate of turbidity is high, turbidity low in source water, the removal rate of turbidity is low, inflow turbidity and effluent turbidity existence correlation, correlation coefficients R^2 is 0. 548, In same temperature. The research on CODMn.UV254 and effluent turbidity shows that the organic matter index is more high, then the effluent turbidity is more high. Biological sand filtration system has good effect on removal of turbidity, therefore, biological sand filtration system has great significant in improving drinking water quality and assuring people＇s health.