Abstract
Purpose: an experimental comparison of the optimal operating modes of standard and modernized hydrocyclone for water purification in reclamation systems. Materials and methods: experimental studies to determine the water purification efficiency from dispersed particles for standard and modernized hydrocyclone were carried out, in which the drain pipe is supplemented with a bulk filter. The water with a given concentration of solid particles, the size and concentration of which corresponded to the fractional composition of impurities in a natural reservoir was the simulative suspension. Results and discussions. As a result of the analysis of the water of a natural water source, it was found that the mass concentration of solid particles is 5 %, while 21 % of the total mass of mechanical impurities are particles with a size of 50 microns or less. The optimal value of the diameter of the sand pipe of a standard hydrocyclone GNS-100 for separating the investigated suspension is 10 mm. This design provides a purification degree of 0.79, while the ratio of purified and sludge water discharge is 3.6. The optimal parameters of the hydrocyclone of the proposed design are the diameter of the sand pipe 10 mm and the backfill of the filter layer 75 %. This configuration provides a 0.91 separation efficiency with a 17 % sludge water loss. Conclusions: the proposed design of a hydrocyclone with a drain pipe, supplemented with a bulk filter, makes it possible to increase the efficiency of trapping mechanical impurities by 12 % in comparison with a typical apparatus, which is due to the joint implementation of hydrocyclone processes and filtration through a layer of granular loading.
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