Selection of Sewage Treatment Agent for Decanter Centrifuge

The main function of centrifuge separator equipment is to remove insoluble matter from fluid, whether solid or liquid. This problem comes, a lot of heavy metal pollution ions are soluble, how to do this? GN discusses with you how precipitator flocculant these sewage treatment agents in the horizontal centrifuge solid-liquid separation process how to cooperate and how to choose.

The precipitator reacts to the chemical characteristics of free ions to form insoluble precipitates. The flocculant aggregates the very small solid suspended matter together to form a large particle size polymer. The pretreatment of the fluid facilitates the solid-liquid separation operation of the decanter centrifuge. Combined use of sewage treatment agents such as precipitators and flocculants, the aggregation and deposition of solid particles and the removal of some dissolved organic matter simplify the operation, save the cost, make the removal of pollutants in wastewater treatment more thorough, more efficient, more complete and lower cost.

In order to achieve a good effect of sewage treatment, the selection of chemicals in the treatment of sewage by decanter centrifuge should be specially analyzed for the physical and chemical properties of sewage, and the distribution of sewage ions, the properties of colloid and suspended matter and the concentration of selected agents should be determined. If the pollutants in water are colloidal, inorganic flocculant is the first choice to make the pollutants metastable and condensed. If the floc is small, it is necessary to add polymer flocculant or to use activated silica gel and other coagulants.

Sometimes in-depth analysis of material characteristics will bring unexpected surprises, according to the charge principle of the same sex repulsive phase absorption, The use of negatively charged flocculants to complex positive charge suspended particles with twice the result with half the effort. It is more suitable for positively charged flocculants to capture the particles with very small negative charge in sewage. Of course, to determine whether the charge properties of pollutant particles are the best partners of horizontal centrifuge, sampling and computer experiments are essential.

In the treatment of horizontal centrifuge, the choice of flocculant precipitator is best determined by sampling experiment, and the sewage sample is determined by the test centrifuge equipment, and then the best proportion of the reagent is confirmed by fine adjustment in production.

Treatment processes such as filtration and flotation are often used in wastewater treatment. By using inorganic flocculant and polyelectrolyte coagulant, the treatment capacity is greatly improved by extending the treatment range. Flocculant precipitator and other chemicals combined with the characteristics of wastewater water quality, flocculant can be used alone, or a variety of flocculant compound use or one main and one auxiliary compound use (auxiliary as coagulant aid). In many cases, the combined use of inorganic flocculant and polymer flocculant can obviously improve the coagulation effect and extend the application range of separation and processing of decanter centrifuge.

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