摘要
CO_(2)酸化海水淡化水联用石灰石可以有效矿化海水淡化水。本文通过研究CO_(2)与淡化水通入比例、水力停留时间(Hydraulic retention time, HRT)、石灰石填料粒径、矿化反应器填料柱高径比对矿化反应效果的影响,确定碳酸钙矿化反应器工艺设备设计及运行参数。结果表明,水力停留时间为5 min左右、CO_(2)通入比例为0.12、石灰石填料粒径1~2 mm、矿化反应器填料柱高径比为1.6时,出水硬度为103.1 mg/L、碱度为107.86 mg/L为较优矿化反应器设计及运行参数。同时Na_(2)CO_(3)可作为矿化出水调节剂,有效调节出水pH的同时增加碱度,降低对现有城市供水管网的腐蚀性。
CO_(2)acidification of the seawater desalination with limestone can be effective to mineralization of sea water desalination, this paper studies CO_(2)and desalinated water bubbled into proportion, hydraulic retention time, limestone filler particle size, high mineralization reactor packed column diameter ratio on the effects of the mineralization reaction, determine calcium carbonate mineralization reactor process equipment design and operating parameters. The results show that when the hydraulic retention time is about 5 min, the CO_(2)inflow ratio is 0.12, the limestone packing particle size is 1~2 mm, and the ratio of height to diameter of the packing column is 1.6, the effluent hardness is 103.1 mg/L and the alkalinity is 107.86 mg/L, which are the optimal design and operation parameters of the mineralization reactor. Na_(2)CO_(3)can be used as mineralized effluent regulator to adjust the pH of the effluent while increasing the alkalinity and reducing the corrosive effect on the existing urban water supply network.
作者
张程贻
王琳
牟春霞
Zhang Chengyi;Wang Lin;Mu Chunxia(College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China)
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2023年第1期114-121,共8页
Periodical of Ocean University of China
基金
国家重点研究发展计划项目(2018YFC0408000,2018YFC0408004)资助。
关键词
海水淡化
后矿化
碳酸钙
工艺设备
防腐蚀
sea water desalination
remineralization
calcium carbonate
processing and equipment
anti-corrosion
