论文部分内容阅读
分别采用混凝/沉淀/超滤工艺和混凝/沉淀/砂滤/超滤工艺处理滦河原水,考察了两种组合工艺的处理效果,并对其中的超滤技术进行经济评价,以期为传统给水厂的改造提供参考。结果表明,超滤在两种组合工艺中都表现出良好的处理效能,对浊度的去除率可达90%以上,对细菌总数和总大肠菌群的去除率高达100%,但混凝/沉淀/砂滤/超滤组合工艺的出水水质比混凝/沉淀/超滤组合工艺的要好且更稳定;另外,超滤与混凝/沉淀/砂滤工艺组合时的运行费用比与混凝/沉淀工艺组合时要低。在对给水厂进行改造时,可通过综合比较来决定是否保留或采用砂滤工艺。
The raw water of Luan River was treated by coagulation / sedimentation / ultrafiltration and coagulation / sedimentation / sand filtration / ultrafiltration respectively, and the treatment effects of the two combined processes were investigated. The economic evaluation of the ultrafiltration technology was carried out in order to The traditional water supply plant to provide a reference for the transformation. The results showed that the ultrafiltration showed good treatment efficiency in both combination processes, the removal rate of turbidity was over 90%, the removal rate of bacteria and total coliform was as high as 100%, but the coagulation / Sedimentation / sand filtration / ultrafiltration combination of effluent quality better than the coagulation / sedimentation / ultrafiltration combination process is more stable; In addition, ultrafiltration and coagulation / sedimentation / sand filtration process when the combination of operating cost ratio and coagulation / Precipitation process combination is lower. In the transformation of the water supply plant, through a comprehensive comparison to decide whether to retain or use sand filtration process.