DocumentCode :
3354574
Title :
The research of new induced crystallization nuclear in water softening
Author :
Yue-fang, Chen ; Lu-lu, Yu ; Yan-qing, Shi ; Qiang, Zhao ; Xin-xiang, Xiong ; Kun, Guo
Author_Institution :
Dept. of Environ. Eng., Univ. of Sci. & Technol. Beijing, Beijing, China
fYear :
2010
fDate :
26-28 June 2010
Firstpage :
5110
Lastpage :
5113
Abstract :
Based on the determined metastable region by static beaker tests, this paper studied cation exchange resin in the treatment of recycling cooling water softening, compared to macroporous porous polymer materials resin white balls, cation exchange resins could be obtained as efficient induced crystallization of nuclear, and effluent achieved the circulating cooling water recharge water quality standard. The best experimental conditions for ion-exchange resin was: pH value for 9.24, the amount of Na2CO3 (concentration 0.05 mol/L)for 5.0 ml/L, the amount of resin for 40 g/L, mixing time for 20 min, and mixing intensity for 200 r/min. Ca2+ removal rate reached 94.8% and 94.8%, and effluent´s calcium concentration were 0.52 mmol/L. And average moisture content of crystalline product was 20.17%, the calcium ions in the carrier´s average crystallization of 27.58 mg/g.
Keywords :
calcium; crystallisation; effluents; ion exchange; pH; polymers; positive ions; recycling; wastewater treatment; water quality; Ca2+ removal rate; calcium ions; cation exchange resin; crystalline product moisture content; effluent calcium concentration; induced crystallization; ion-exchange resin; macroporous porous polymer materials; metastable region; pH value; recycling; static beaker test; water quality standard; water softening; white ball; Calcium; Cooling; Crystallization; Effluents; Materials testing; Metastasis; Recycling; Resins; Softening; Water conservation; Induced crystallization nuclear; recycling cooling water; softening;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-7737-1
Type :
conf
DOI :
10.1109/MACE.2010.5535962
Filename :
5535962
Link To Document :
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