scholarly journals Electrodialysis desalination and limiting concentration of highly mineralized waters

Author(s):  
D.D. Kucheruk ◽  
◽  
L.A. Deremeshko ◽  
M.N. Balakina ◽  
I.Ya. Pischay ◽  
...  

We study the regularities of the process of desalination of sodium chloride solutions with a limiting concentration of 10.2 to 37.7 g/dm3, which simulate chloride wastewater of some mining enterprises. We use an electrodializerconcentrator with advanced design developed at A.V. Dumansky Institute of Colloid Chemistry and Water Chemistry of the NASU. The need to develop such device is caused by the necessity of the deep concentration of concentrates obtained during the wastewater treatment in order to facilitate their further processing into secondary material resources. The electrodialyzers produced by the industry are unsuitable for a significant concentration, since the concentration chambers in such devices and the desalination chambers are pumped with the initial solution. This leads to a significant reduction in the concentration of the resulting brine. Studies have shown that the use of the specified electrodializer-concentrator allowed one to obtain for 100 min from solutions with a concentration of 10.2, 18.8, and 37.7 g/dm3 Cl-ion diluents containing them, respectively, 0.2, 0.6, and 1.0 g/dm3 and to concentrate the brine by 10.6, 6.7, and 4.0 times, respectively. Based on this research and the experience gained at the Institute in the field of mine water treatment, a basic block diagram of the mine water treatment is developed. It is based on a combination of advanced electroodialysis and reverse osmosis. The complex processing of substances removed during the mine water treatment involves their use in relevant industries; additional desalination diluent can be used for technical purposes, and its excess is discharged into reservoirs.

2014 ◽  
Vol 2014 (13) ◽  
pp. 2544-2562
Author(s):  
Rangesh Srinivasan ◽  
Kar Munirathinam ◽  
Phil Facer ◽  
Tom A. Sandy

2013 ◽  
Vol 825 ◽  
pp. 149-152
Author(s):  
Michael Schlömann ◽  
Judith Kipry ◽  
Sophie Mosler ◽  
Anja Poehlein ◽  
Andreas Keller ◽  
...  

Ferrovum is a recently found new genus of acidophilic iron-oxidizing bacteria.Ferrovumspp. dominate the microbial community of a pilot plant for biological mine-water treatment and together with someGallionellarelatives appear to be key players of the process. Isolation ofFerrovumstrains should greatly be facilitated by a new APPW medium. Sequencing of the genome ofFerrovumsp. JA12 so far did not point to any alternative electron donors and also did not reveal genes for nitrogen fixation.


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