IC厌氧反应器处理造纸废水效率的时间分布特征研究

Time Distribution Characteristics of IC Anaerobic Reactor for Treating Papermaking Wastewater

关键词:  造纸废水  IC厌氧反应器  时间分布特征  pH值

Key Words:papermaking wastewater  IC anaerobic reactor  time distribution characteristics  pH value

摘要:本研究收集了2013—2021年广州某造纸厂废水COD_Cr、温度、pH值和碳酸氢盐碱度（Alk）等常用指标数据，探究不同环境温度、进水pH值和出水Alk下的IC厌氧反应器处理效率。结果表明，进水pH值对不同年份下的IC厌氧反应器处理效率有影响，在弱碱性条件下处理效率与废水pH值成反比，且在7.0~7.3之间处理效率会更高。影响pH值的一个主要因素为Alk，一定范围内的Alk越高，pH值也越高。IC厌氧反应器处理效率与气温有显著关系，春秋季节（20~27℃）的处理效率更好。通过平衡造纸废水处理过程中气温与水温的关系，维持pH值和Alk在正常范围内，可使IC厌氧反应器的处理效率更优。

Abstract:The common indicator data such as COD_Cr， 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 increasing Alk. The IC anaerobic reactor treatment efficiency had a significant relationship with temperature with a better treatment efficiency obtained at spring and autumn （20~27℃）. By coordinating the relationship between temperature and water temperature during papermaking wastewater treatment process， maintaining the pH value and Alk within normal range， the treatment efficiency of IC anaerobic reactors could be better.