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Hydrolysis-acidification pretreatment of alkali straw pulp bleaching effluent

Yang Qing

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Abstract

The experiment makes use of Anaerobic Baffled Reactor (ABR)in the study of hydrolysis-acidification pretreatment on alkali straw pulp bleaching effluent. The results show that the potential biochemical capability of alkali straw pulp bleaching effluent is improved by hydrolysis-acidification pretreatment with ABR. The best technical condition is: HRT=8h, pH=7, temperature at 25-35℃, VSS/SS=0.85, SVI=85.1, sludge with certain activity and nice sinking performance, water quality exceeds that in the preliminary sedimentation tank.

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What this paper is about

The experiment makes use of Anaerobic Baffled Reactor (ABR)in the study of hydrolysis-acidification pretreatment on alkali straw pulp bleaching effluent. The results show that the potential biochemical capability of alkali straw pulp bleaching effluent is improved by hydrolysis-acidification pretreatment with ABR. The best technical condition is: HRT=8h, pH=7, temperature at 25-35℃, VSS/SS=0.85, SVI=85.1, sludge with certain activity and nice sinking performance, water quality exceeds that in the preliminary sedimentation tank.

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Available abstract

The experiment makes use of Anaerobic Baffled Reactor (ABR)in the study of hydrolysis-acidification pretreatment on alkali straw pulp bleaching effluent. The results show that the potential biochemical capability of alkali straw pulp bleaching effluent is improved by hydrolysis-acidification pretreatment with ABR. The best technical condition is: HRT=8h, pH=7, temperature at 25-35℃, VSS/SS=0.85, SVI=85.1, sludge with certain activity and nice sinking performance, water quality exceeds that in the preliminary sedimentation tank.

Key concepts: Effluent, Pulp and paper industry, Chemistry, Pulp (tooth), Hydrolysis, Straw, Alkali metal, Anaerobic digestion

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