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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.10 P.1100~1106

10.1631/jzus.2005.A1100


Development of an evaporation crystallizer for desalination of alkaline organic wastewater before incineration


Author(s):  MA Jing-ying, MA Zeng-yi, YAN Jian-hua, NI Ming-jiang, CEN Ke-fa

Affiliation(s):  Clear Energy and Environment Engineering Key Laboratory of MOE, Institute of Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   majy75@163.com

Key Words:  Salty wastewater, Volatile organic compounds (VOCs), Sodium chloride, Evaporation, Crystallization, Desalination


MA Jing-ying, MA Zeng-yi, YAN Jian-hua, NI Ming-jiang, CEN Ke-fa. Development of an evaporation crystallizer for desalination of alkaline organic wastewater before incineration[J]. Journal of Zhejiang University Science A, 2005, 6(10): 1100~1106.

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author="MA Jing-ying, MA Zeng-yi, YAN Jian-hua, NI Ming-jiang, CEN Ke-fa",
journal="Journal of Zhejiang University Science A",
volume="6",
number="10",
pages="1100~1106",
year="2005",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2005.A1100"
}

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%T Development of an evaporation crystallizer for desalination of alkaline organic wastewater before incineration
%A MA Jing-ying
%A MA Zeng-yi
%A YAN Jian-hua
%A NI Ming-jiang
%A CEN Ke-fa
%J Journal of Zhejiang University SCIENCE A
%V 6
%N 10
%P 1100~1106
%@ 1673-565X
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.A1100

TY - JOUR
T1 - Development of an evaporation crystallizer for desalination of alkaline organic wastewater before incineration
A1 - MA Jing-ying
A1 - MA Zeng-yi
A1 - YAN Jian-hua
A1 - NI Ming-jiang
A1 - CEN Ke-fa
J0 - Journal of Zhejiang University Science A
VL - 6
IS - 10
SP - 1100
EP - 1106
%@ 1673-565X
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.A1100


Abstract: 
A wastewater evaporation-desalination pretreatment method was introduced to remove the Na+ and K+ salts in volatile organic compounds (VOCs) wastewater before it was fed into the incinerator. VOCs in the wastewater were volatilized in the evaporation system and then the vapor was combusted in an incinerator. Simulated phenol wastewater containing sodium chloride was evaporated and concentrated and sodium chloride was crystallized in different parameters. The experimental results showed that the higher initial concentration of sodium chloride increases the ratio of volatilization of VOCs, which was due to the effect of “salting out” (a decrease in the solubility of the nonelectrolyte in the solution, or more rigorously, an increase in its activity coefficient, caused by the salt addition (Furter and Cook, 1967)). When evaporation speed was increased from 1.67 ml/min to 2.73 ml/min, the total removal coefficient of sodium chloride was about 99.88%~99.99%. This pretreatment procedure eliminates the slag phenomenon caused by Na+ and K+ salts during wastewater incineration, so the incinerator could operate continuously, and the wastewater evaporation could increase the heat value of wastewater, and the operation cost would be reduced.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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