Time Distribution Characteristics of IC Anaerobic Reactor for Treating Papermaking Wastewater

Abstract

The common indicator data such as CODCr，temperature，pH value and alkalinity（Alk）of wastewater from a papermaking factory in Guangzhou from 2013 to 2021 were collected in this study，to explore the treatment efficiency of IC anaerobic reactor at different temperature，pH value and Alk. The results showed that the pH value had an effect on the treatment efficiency of IC anaerobic reactor in different years. The treatment efficiency was inversely proportional to pH value of wastewater under weak alkaline conditions，and the treatment efficiency was higher with pH value of 7. 0 to 7. 3. One of the main factors affecting pH value was Alk，and within a certain range，the pH value increased with the in⁃ creasing Alk. The IC anaerobic reactor treatment efficiency had a significant relationship with temperature with a better treatment efficiency ob⁃ tained at spring and autumn（20~27℃）. By coordinating the relationship between temperature and water temperature during papermaking waste⁃ water treatment process，maintaining the pH value and Alk within normal range，the treatment efficiency of IC anaerobic reactors could be better.