防二次污染蓄贮水装置研究与开发应用

解决饮用水在蓄贮过程中二次污染问题 ,是改善和保障我国城市供水水质的主要环节。影响蓄水装置水质变化的内部因素主要有材质、水力停留时间和水的流动特性。建造蓄水装置应采用食品卫生级的材料和防腐涂料 ;应严格控制蓄水装置容积 ,使其平均水力停留时间小于 6～ 8h ;应采取防止死水区和保证水体流动性措施。提出了一种防污染旋流式蓄水装置 ,并在实际工程中得到了示范应用

RESEARCH ON WATER STORAGE DEVICE PREVENTING SECONDARY POLLUTION AND ITS APPLICATION

Preventing secondary pollution of drinking water in storage is the key link to improve and ensure water quality for city.The main internal factors influencing water quality in storing water unit are the material of the unit,hydraulic retention time (HRT) and flowing character of the water in the unit.The material and antirot paint for storage unit should be up to the standard for food,and the unit should be limited in volume for the average HRT to be less than 6～8 hours.Measures to prevent dead water zone and to make water in unit flowing should be taken.A new storage unit in which water remains in circle flowing to prevent pollution is researched and produced,which has been applied in a project.