Optimizing Bleaching Operating Conditions Based on Mathematical Programming to Reduce AOX Emissions.

ABSTRACT: This study describes the optimization of a eucalyptus elemental chlorine-free (ECF) bleach plant to reduce adsorbable organic halogen (AOX). The correlations between operating conditions of each stage and pulp quality indices as well as the AOX content in wastewater are analyzed, taking an ECF bleaching technology (D₀EpPD₁) as an example. The calculation models of pulp quality indices and AOX content in wastewater are established. Then, an optimization model aiming at minimizing AOX emission is structured. The model shows a good simulation effect because the errors between the calculated and experimental values are within 6.3%. By analyzing the impact of various operating conditions on AOX emissions, it was found that chlorine dioxide reduced in the D₀ stag

SUBMITTER: Yin Y 

PROVIDER: S-EPMC8851456 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature