Austrian Journal of Technical and
reagent hydrosilicate of calcium and aluminum sulfate
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Scopus, Web of ScienceAustriya-11-12,2019 (2) - копия
reagent hydrosilicate of calcium and aluminum sulfate
№ Dose hydrosilicate of calcium, mg/l dose sulfate aluminum mg/l reduction efficiency of the color intensity, % 1 20 300 150 2 100 400 300 3 200 500 400 4 250 400 500 5 300 500 600 Conclusion It is shown that the basis of the proposed method of fixing salted sand complex additions is the process of translation their surface layers (up to 5cm) from the freedispersed state to the connected-dispersed by forming a structure (crust), consisting of a water-macroaggregates — particles> 1.0 mm, having mechanical strength (to 3.0 MPa). Optimal conditions for the composition of additives, hardeners exhibit the maximum effects of action, as well as the procedure for their introduction into the sand. It is found that a composition consisting of 0,26kg/m 2 sawdust and 0,008kg/m 2 GSK (calculated on a dry product that provided using a 0.8% solution of GSK) is considered optimum and promotes crust having a sufficiently high strength about 2.4 MPa, and the amount of water-resistant aggregates (> 0.25 mm) in the structure with equal 69.91% vs. 6.28% in the original. Kokand chemical Plant HSC fixer composition with sawdust. HSC having a high value of specific surface area andrespectively the adsorption better than anather sodium. Using HSC obtained based on a dilute solution (0.05%) waste Kokand chemical Plant — 10% solution of calcium chloride in combination with a dilute (0.05%) with a solution of 17% solution of sodium silicate allows to clean wastewater plants the textile industry of dyes, capacitance for waste water treatment is not used as a finished product,ie to besiege flaked various colorants present in the the composition of wastewater. Thus, for example, wastewater treatment Fergana cotton mill found that the use of the reagent — HSC under optimal relationships of its constituent component parts (3 parts of a 0.05% solution of Kokand chemical Plant calcium chloride and 2 parts of a 0.05% solution of sodium silicate) in the number 200–600 mg/l in combination with aluminum sulfate (200–400 mg/liter) degree of industrial wastewater reaches 94–98%, and thus the proposed method well as the first case, distinguishing the product is a colloidal dispersion degree at the reagent wastewater treatment sodium silicate and aluminum helps to improve environment ecology. |
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