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Study on Water Softening for Boiler by Nanofiltration(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2004年02期
Page:
19-21
Research Field:
Publishing date:

Info

Title:
Study on Water Softening for Boiler by Nanofiltration
Author(s):
ZHANG Xianqiu;  WANG Liyou;  ZHANG Yuqing
School of Power Engineering, Nanjing Normal University, Nanjing 210042, China
Keywords:
Nanofiltration;  water softening;  dissolve- diffusion model;  Donnan effect
PACS:
TK227
DOI:
-
Abstract:
Softening experiments on Nanjing ( China) tap water were conducted using minitype Nanofiltration device. The results showed the hardness removal efficiency was higher than 90%, and the total hardness concentration of the produced water was lower than 0.3 mmol/ L, meeting the water quality standard of heating-water boiler. Moreover, the total hardness concentration of the produced water of NF90 was lower than 0.01 mmol/ L, meeting the water quality standard of middle low pressure steam-boiler . In addition, dissolve- diffusion model and Donnan effect model were applied for the analysis and explanation of the exper imental results.

References:

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Last Update: 2013-04-29