Vliv změny technologie výroby na zatížení a čištění OV v Biocel Paskov a.s

Abstract

This thesis deals with changes in the technology of pulp production in transition from the production of paper to dissolving pulp in Biocel Paskov a. s. and influence of these changes on the quality of wastewater. Higher level of removal of organic substances from the pulp during cooking will increase the total drain of the influent wastewater to treatment plants. WWTP must ensure no increase of emissions of organic substances and comply with the applicable limits for waste water discharges. Water emissions come mainly from the processes of loss of wash, wastewater from bleaching plant and condensate from the evaporator. WWTP was supplied by the technology of anaerobic pretreatment of condensates and existing pulp bleaching by chlorine dioxide was replaced by, ozone. In this thesis explores the influence of ozone bleaching and anaerobic pretreatment on the organic drain of the waste waters and WWTP, the results obtained are evaluated and graphically presented.