Development of non-waste technology of native, mine and other waste water demineralization

Keywords
Energetics and energy efficiency Rational nature management

Description
Water demineralization methods existing nowadays in the world provide only partial solution of the problem. Using ionic exchange, reversed osmosis, electrodialysis and etc. for water desalting, concentrated solutions of salts are created and released into open water, worsening difficult ecological situation. Water desalting technology, which includes refinement of concentrated salts and avoids their release into open water, rivers, seas, oceans, soil water, water-treating facilities and water storages. Thus such different objectives as softened water treatment for water recycling cooling systems with chlorides and sulfates extraction can be achieved;

Innovative aspect and main advantages
Existing traditional water treatment technologies allow to remove suspended solids, soluble and insoluble organic compounds, but they are less effective for water demineralization.
Baromembrane methods as nanofiltration and reversed osmosis nowadays are widely used for solution of low- and highmineralized water desalting problem. Although there are some complications in their application. First of all, it is qualitative water pre-treatment and concentrates disposition. Pre-treatment includes fine purification from suspended solids (up to 0.2 mg/dm3), water desalting and softening. Softening with sea water desalting is especially important. Generally, qualitative water pre-treatment defines membrane’s durability, which are manufactured abroad and have high cost. Problem of concentrates disposal is particularly pointed in lowmineralized water treatment. Concentrates yield up to 20-30 % and their mineralization reaches 3-6 g/dm3, when releasing water with mineralization over 1 g/dm3 into open water is forbidden.

Problem solved
Industrial technologies of native and waste water treatment market analysis shows that developed countries constantly increasing funding of new water-conservation techniques. Investment in developing membrane, physical-and-chemical, electrochemical and oxidizing methods of native and waste water treatment increases with high rate. Accents of investment stimulation in water treatment techniques improvement shift to the economic viability, inducing creation and improvement of recycling water-supply systems, closed water use systems, local waste water treatment facilities, including water with valuable components processing or concentrated aqueous effluent disposal.

Development stages
Development completed with proved results

Potential customers, markets
Implementation scope of the developed concentrates treatment can be applied not only on baromembrane equipment, but on existing physical-and-chemical water treatment departments, where similar concentrates, which are not disposed, are obtained as result of ionic exchange water softening. Market of such technologies only in Ukraine can be evaluated by thousands of industrial plants.