MODIFICATION OF QUARTZ LOADING BY SOLID FLOCCULANTS SOLUTION
Abstract
In the article are considered modification of quartz loading of rapid filters with a solution of polyacrylamide, that allows to intensify the processes of water treatment in drinking water supply systems, to decrease expenses reagents on 25-30%, obtain purified water of the required quality, reduce the number of production areas required for the reagent economy of treatment facilities, this cost of water purification is reduced by 20-25%.
Water treatment from suspended humic and other impurities is carried out in the process of coagulation and flocculation. For water treatment from suspended in it colloid particles it is necessary to destroy the balance, to remove forces that do not allow the particles to settle. As a result, aggregates are formed - large (secondary) particles, consisting of a cluster of small (primary). Primary particles in such aggregates are connected by forces of intermolecular interaction directly or through a layer of the surrounding (dispersive) medium. Coagulation is accompanied by progressive aggregation of particles and a decrease in their total number in water volume.
It was established that modification of quartz loading allows to reduce the cost of reagents on average by 40-50% with the receipt of water of the required quality, while the cost of clarified water decreases by 25-30%.
The method of modification of quartz loading in fast filters with solutions of flocculant polyacrylamide is protected by the patents of Ukraine No. 45258 Method of modification of the filtering charge for clarification of natural and waste water from 03.03.2002 and No. 118596 Method of purification of natural and sewage from 10.08.2017.
It is necessary to continue the study of modified quartz loading with a solution of flocculant for treatment drinking water, depending on the quality of the initial water.
Keywords: water treatment, modification of quartz loading, drinking water quality, flocculant, filtration, intensification of natural water treatment process.
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