Wastewater treatment of PVC floor tile production

Summary

The results of studies on the purification of wastewater generated during the production of PVC tiles containing products of thermal decomposition of the raw materials are presented. The wastewater contains increased values of COD, salt content, chloride and sulfate concentrations. During the research work experimental studies were conducted on the purification of this wastewater by adding oxidizers and coagulants. The studies were conducted using the following oxidizers: hydrogen peroxide, sodium hypochlorite, trichloroisocyanuric acid (Longafor), as well as coagulants: Equitall, Aurat EPOKHA, Unikof™-M. The studies showed that the best purification results were obtained using Longafor and Equitall chemicals. The purification efficiency in terms of COD removal was 70%.

Key words

efficiency of treatment , coagulants , wastewater of PVC floor tile production , pollution oxidation

The technology of wastewater treatment of PVC floor tile production

Summary

The results of studying the treatment of wastewater generated during the production of polyvinyl chloride tiles that contains thermal decomposition products of the starting materials. Experiments were conducted on wastewater processing with oxidizing agents – Longafor and Khloriteks containing compounds of tri- and dichloroisocyanuric acid, respectively. It was found that the treatment efficiency, based on COD, for both chemicals was 65–75%. Exposure of a wastewater sample after chemical treatment and filtration for 72 hours improves the treatment efficiency to 85–90%. Conceptual wastewater treatment schemes at the intermittent and continuous inflow, as well as with water recycling, were developed.

Key words

reagent treatment , efficiency of treatment , pollution oxidation , wastewater of polyvinyl chloride tile production