The Treatment of Wastewater of Synthetic Rubber Production from Anionic Surfactants
The possibility of wastewater (WW) purification of BR production from antiagglomerator (AA) by treating them by WW of SKI production. AA - surfactants based on the mixtures of polycarboxylates (isobutylene- maleic anhydride copolymer salts of sodium, potassium, calcium) and characterized by poor biodegradability. AA action is directed to prevent the adhesion of rubber crumb during its degassing and separation. WW of SKI production based on titanium tetrachloride and trialkylaluminium are formed at the stage of polymerization and washing of product from catalyst; the possibility to use WW of SKI containing aluminum and titanium ions as a mixed coagulant is shown. The value of chemical oxygen demand (COD) was used for evaluation of AA content. COD was used also for evaluation of removing of AA from the mixture of WW of both BR and SKI after centrifuging. The results of the modeling of the coprecipitation of aluminum, titanium and AA compounds are presented. Mechanism of precipitation of AA based on formation of hydrogels of aluminum and titanium salts in water is suggested.