农村饮水工程适宜水质净化技术

农村饮水工程根据不同的原水水质条件，宜采用不同的水质净化技术。对地表水浑浊度长年低于20NTU、瞬间不超过60NTU原水，可采用微絮凝直接过滤加消毒或慢滤加消毒净化工艺；浑浊度长年低于500NTU、瞬间不超过1000NTU的原水，采用混凝沉淀（澄清）过滤、消毒的常规净水工艺。对于特殊水质如氟超标的地下水、砷超标的地下水、苦咸水及其他污染水，根据不同情况，可分别采用活性氧化铝吸附法、混凝沉淀法、多介质过滤法、铁盐混凝沉淀法、电渗析法、反渗透法等不同方式予以处理。

Purification technologies suitable for rural drinking water projects

Varied purification technologies may be applied in rural drinking water projects in accordance with quality of water sources. Purification technologies of direct filtration and disinfection by micro-flocculation or slow-filtration and disinfection may be applied to raw water with last-year turbidity lower than 20NTU and instantaneous value lower than 60NTU. Conventional methods of sedimentation or clarification bed for purification and disinfection should be applied to raw water with turbidity in accumulative years of 500NTU or instantaneous value lower than~ 1000NTU. Other methods of activated alumina absorption, sedimentation, multi-agent filtration, chalybeate deposition, electronic dialysis and anti-filtration etc. shall be used for groundwater with high fluorine or arsenic, blackish water or other polluted water, according to the actual conditions.