Dewatering of sludge formed during the reagent decomposition of waste emulsion fluids

The article presents the results of studies on mechanical dewatering of sludge formed during the decomposition of waste emulsion fluids by a solid-phase reagent based on modified bentonite clay and flocculants. The sludge on the basis of emulsion fluids, produced in metallurgical and mechanical engineering enterprises, in the liquid form are discharged into the “dirty” recycling of water supply in industrial companies. It’s inadmissible, as it leads to their accumulation in the solid state. This work presents the results of laboratory experiments on dehydration of the sludge by filtering under gravitational conditions, vacuum and extra pressure, with the use of flocculants of various actions. The simulation of the manufacturing equipment operation is made in accordance with well known techniques. The best results are obtained by sludge filtration on the models of a drum vacuum filter and a chamber filter press. The article presents main technological parameters of industrial equipment for dehydration, specified according to the results of laboratory experiments and recommendations for choosing the technology of mechanical dewatering of the considered sediment. These data can be used when designing facilities for treatment of waste water in metallurgical and mechanical engineering companies.