环境保护科学2024，Vol.50Issue(6)：126-132,7.DOI:10.16803/j.cnki.issn.1004-6216.202309050
双层滤料翻板滤池反冲洗存在问题及解决措施
Problems and solutions of backwashing in double-layer flap filter
摘要
Abstract
The filter is a crucial part of drinking water treatment process,but during the summer,with high nutrient levels and large water volumes,the flap filter can get clogged and the water can become cloudy.The solutions and experiences were summarized,combined with the problems of yellow-brown floating foam on the surface of the filter tank and mud ball sloughing on the surface layer of the filter media,which appeared during the operation of a flap filter tank in a water supply plant in Yinchuan.The results showed that the use of sodium hypochlorite solution soaking filter could prevent algae from forming flocs blocking the filter media,and at the same time could dissolve the coagulant aid PAM,improving the cleaning effect of the impurities attached to the filter media to reduce the formation of mud particles.Shortening the filtration cycle could reduce the impurity residence time,effectively alleviating the impurity deposition of the filter pond under the large amount of water.Prolonging the time of the air flushing stage and increasing the intensity of the water flushing could enhance the friction desorption of the inter-filter media.Prolonging the time of the air flushing stage and increasing the intensity of water flushing could enhance the friction desorption between the filter media,break the large particles of impurities,clean the slate filter media,and improve the effluent quality.关键词
翻板滤池/气水反冲洗/双层滤料/滤料板结/次氯酸钠浸泡Key words
flap filter/air-water backwashing/double-layer filter media/filtering material hardening/sodium hypochlorite immersion分类
资源环境引用本文复制引用
王涛,李一鸣,王世杰,郭欣,程紫微,刘瑞,肖峰..双层滤料翻板滤池反冲洗存在问题及解决措施[J].环境保护科学,2024,50(6):126-132,7.基金项目
国家自然科学基金资助项目(52030003) （52030003）
