Equipment manufactured by EKOFES SPE LLC in the field of import phaseout of electrolyzers for the large-scale production of sodium hypochlorite for water disinfection

Summary

Traditionally the sanitary and epidemiologic safety of drinking water is ensured by chlorination that continues to be the most widely used method of water disinfection in the world owing to its sanitary-hygienic reliability, prolonged bactericidal action, relative simplicity and economic efficiency. However, while using liquid chlorine, the problem of its transportation through populated areas and storage of multi-tonnage stocks at the water treatment facilities remains apparent. Low-concentration electrolytic sodium hypochlorite produced at the point of consumption by electrolysis of sodium chloride solution is generally recognized as an alternative disinfectant to liquid chlorine. Those who use foreign technologies and electrolyzers become contingent on foreign service and repair, as well as on the supply of imported components and consumables which causes serious financial difficulties. In addition, foreign companies in the production of sodium hypochlorite use deep-softened Na-cationized water and special salt not lower than Extra brand. The successful promotion of high-efficiency domestic electrolyzers in the field of import phaseout became possible only with taking into account the demands of water utilities for the use of the cheapest and available raw materials (table salt not higher than A-number), as well as for the after-sale service by the supplier and the manufacturer warranty to eliminate unforeseen shutdowns of the equipment, emergency failures or consequences of force majeure in the shortest possible time. The established in Russia (EKOFES SPE LLC) production of high-capacity electrolyzers that are not inferior in their technical and economic performance to foreign counterparts will provide for complete abandoning foreign supplies and implementing import phaseout of this type of equipment by a domestic manufacturer.

Key words

decarbonization , electrolyzer , low-concentration electrolytic sodium hypochlorite , salt dissolver , no-waste technology

Ecological safety of Crimea: advanced technologies
of water management complexes

Summary

The main problems of the Crimean water supply are related to the shortage of drinking water, low technological and sanitary reliability of water treatment systems, the lack of a sufficient number of demineralization, softening and disinfecting water plants in the shoreland and rural areas, and the unsatisfactory state of the water distribution network and treatment facilities. In the circumstances concerned, an urgent task is to provide the population of Crimea with high-quality drinking water when increasing the environmental safety of the operation of engineering and water management complexes, including facilities, plants and installations for the treatment and disinfection of natural and waste water. The aspects and ways of solving the problems of recycling and reusing as a commercial product the concentrate of desalination and water softening plants, as well as electrolysis wastes of sodium hypochlorite production at the water treatment facilities for water disinfection are considered. Environmentally friendly technological solutions for the operation of the plants for chemical softening, reverse osmosis and sodium hypochlorite production from aqueous solutions of common salt are recommended.

Key words

disinfection , sodium hypochlorite , desalination , decarbonization , chemical softening , water scarcity , no-waste technology