文档介绍：第 28 卷第 19 期中国给水排水 Vol. 28 No. 19
2012 年 10 月 CHINA WATER & WASTEWATER Oct. 2012
淡化海水并网供水的管网铁释放控制技术研究
米子龙1 , 张晓健1 , 陈超1 , 陈沛君2 , 杜嘉丹2
1. 清华大学环境学院,北京 100084 2. 山东大学环境科学与工程学院,山东
济南 250100
摘要淡化海水由于具有较强的侵蚀性,并网供水后会对既有供水管网造成严重的铁释放
现象和黄水问题。为了有效地控制管网铁释放,利用管段模拟反应器,定量研究了调节 pH 值、碱
度、硬度和投加缓蚀剂对管网铁释放的控制效果。研究发现,提高 pH 值、增加碱度和硬度、投加磷
酸盐缓蚀剂均可使淡化海水并网供水后造成的管网铁释放量明显降低。由此初步确定了控制淡化
海水进入供水管网造成铁过量释放所需满足的水质条件为管网水的 pH 值在 7. 70 以上,碱度>
80 mg /L,硬度> 80 mg /L 必要时可选择投加 0. 25 ~ 0. 50 mg /L 的聚磷酸盐缓蚀剂。
关键词淡化海水给水管网铁释放水质调节后处理
中图分类号 TU991 文献标识码 A 文章编号 1000 - 4602 2012 19 - 0037 - 04
Controlling Iron Release in Drinking Water Distribution System Fed with
Desalinated Seawater
1 , 1 , 1 , 2 , 2
MI Zi-long ZHANG Xiao-jian CHEN Chao CHEN Pei-jun DU Jia-dan
, , ,
1. School of Environment Tsinghua University Beijing 100084 China 2. School of
, , ,
Environmental Science and Engineering Shandong University Jinan 250100 China
, ,
Abstract Desalinated seawater with strong corrosiveness would possibly lead to serious iron re-
lease phenomenon and“red water”problem when fed into municipal drinking water distribution systems.
, , ,
To control iron release in the drinking water distribution system the effect of adjusting pH alkalinity
hardness and adding inhibitor were investigated in pipe section reactors which were designed to simulate
,
work conditions. The results f