Analysis of the proper bicarbonate concentration for shipboard seawater reverse osmosis remineralization
10.3760/cma.j.issn.1009-6906.2019.03.014
- VernacularTitle:船舶反渗透海水淡化水矿化重碳酸盐适宜浓度分析
- Author:
Jianping ZHANG
1
;
Shiyang ZOU
;
Yueping YANG
;
Junrong WU
;
Bingquan DING
Author Information
1. 海军军医大学海军特色医学中心, 上海,200433
- Publication Type:Journal Article
- Keywords:
Ship;
Seawater reverse osmosis;
Bicarbonate;
Remineralization;
Proper concentration
- From:
Chinese journal of nautical medicine and hyperbaric medicine
2019;26(3):225-227,231
- CountryChina
- Language:Chinese
-
Abstract:
Objective To research the proper bicarbonate concentration for shipboard seawater reverse osmosis ( RO) remineralization. Methods Comprehensive analyses were made on the effects of HCO3- l on the desalination corrosion index, the methods of shipboard seawater reverse osmosis remineralization and related remineralization criteria. Then, the range of proper bicarbonate concentration of soft water remineralization was recommended for shipboard seawater reverse osmosis remineralization from different angles, which was verified by municipal drinking water quality survey results. Results HCO3- concentration greater than 90 mg/L could significantly reduce corrosiveness of desalinated water. Nevertheless, the contribution ration for Langelier index ( LSI) was debased when HCO3- was greater than 90 mg/L. At present, the minimum quality criteria for HCO3-concentration was equal or greater than 30mg/L proposed by most countries. Shipboard desalination remineralization was more preferable with direct addition of agent, but the dissolution of bicarbonate was quite low in water. Conclusion In consideration of the shipboard environment and support capability, the applicable bicarbonate concentration of shipboard RO desalination remineralization was 30-90 mg/L, which was within the range of drinking water bicarbonate concentration for 50％ of the cities in our country.
