Physical methods of resource saving technologies in water supply systems
DOI:
https://doi.org/10.32347/2524-0021.2018.30.6-13Ключові слова:
coagulation, aluminum sulfate coagulant, activated coagulant solution, chromaticity of water and suspended matter content, electrocoagulationАнотація
In article the questions connected with use of physical methods of resource-saving technologies in water supply systems are explained. It is established that use of physical methods of resource-saving technologies in water supply systems allows to intensify processes of water treatment, to improve quality of water treatment and reduce expenses of reagents on 20-25%. The physical methods of resource-saving technologies for water treatment processes provide for the creation of optimal conditions for the rapid and complete separation of the heterogeneous system that are natural water, that in practice of water treatment comes down to getting large flakes that easily settle with a highly developed surface and reducing their formation time. Consideration of the published works shows that the followings physical methods of resource-saving technologies got distribution: imposition of electric field; imposition of magnetic field; electrocoagulation.
A method of intermittent electrocoagulation has been developed, which represents a technological process of water purification, in which from time to time the flow of electrogenerated reagent (metal) into water stops. The use of a concentrated solution of aluminum sulfate coagulant is in the processes of water treatment. The last allows to intensify the processes of water treatment in contact clarifiers, that finds expression in the increase of quality of clarified water and decline of expense of coagulant on 20–25%. The use of the activated solution of coagulant for water treatment allows to increase duration of the filter cycle by 25–30% without deterioration of the quality of filtrate. At the same time, the quality of the filtrate on the continuation of the filter cycle is 30–35% higher than at the use of ordinary solution of coagulant.
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