净水技术2024，Vol.43Issue(z1)：21-28,8.DOI:10.15890/j.cnki.jsjs.2024.s1.004
南京地区饮用水"控垢"需求分析及适用技术探讨
Demand Analysis and Application of Drinking Water"Scale Control"in Nanjing Area Technical Discussion
摘要
Abstract
Drinking boiled tap water is an important drinking habit among residents in China,but the issue of"scale"generated after boiling poses challenges for both water supply companies and users.This study combined the characteristics of water source,existing treatment processes and the demand for"scale"control in the Nanjing region.By considering the generation reactions and influencing factors of"scale",it explored effective methods for controlling"scale"in low-hardness drinking water.The results indicated that the overall water quality of the Nanjing region was good,and water treatment plants had established advanced treatment processes to ensure the safety of water supply.Currently,the typical water quality issue was related to"scale".The improved induced crystallization softening process had a good control effect on"scale"after boiling.The dosage of softening agent should be controlled at around 10 to 20 mg,and carbon dioxide should be added to adjust the pH.After treatment,there was no"scale"in the boiled water,and the total hardness of the water after boiling remains unchanged.Additionally,"scale"was not generated even after multiple boilings.The total operating cost of the process could be controlled to around 0.06 yuan/m3.关键词
饮用水/总硬度/水垢/控垢/适用技术/南京Key words
drinking water/total hardness/scale/scale control/applicable technology/Nanjing分类
建筑与水利引用本文复制引用
刘振东,徐文蕙,周冰洁,李海兵,刘成,陈卫..南京地区饮用水"控垢"需求分析及适用技术探讨[J].净水技术,2024,43(z1):21-28,8.基金项目
国家重点研发计划项目:高品质饮用水净化新型纳滤膜材料制备及分离技术研究与应用示范(2023YFC3208004) （2023YFC3208004）
