IC反应器处理废纸造纸废水的运行参数

Operating Parameters of IC Reactor Treating OCC Wastewater

通过自制IC反应器处理废纸造纸废水,研究其运行过程中的主要影响因素.重点考察了进水量、外回流量和pH等运行参数的影响,并在此基础上研究了CODCr去除量与内循环水量和产气量的关系,最后说明了进水中硫酸盐和钙离子对IC反应器的影响.结果表明:在其他因素不变的条件下,当进水量为2.0 L/h(HRT为5.5 h),外回流量为0 L/h,pH为7.0时,ρ(CODCr)可从2 000～2 500 mg/L降至340～425 mg/L,CODCr去除率在83%左右.每去除1 kg CODCr可产生0.318～0.452 m3气体,当CODCr容积负荷在1.1 kg/(m3.d)时,内循环水量等于进水量.硫酸盐和钙离子均对IC有一定的影响,在运行中应给予一定的控制.

This experiment investigated the major contributing factors of the operation process of a self-made IC reactor in the treatment of OCC wastewater.Factors such as the amount of water intake,external reflux quantity and pH were intensively analyzed.Based on this analysis,the relationships between removal of CODCr and the internal recycling water amount and gas yield were also studied.Finally,the effects of sulfate and calcium ions in the water on the IC reactor were explained.The results showed that when the amount of water intake was 2.0 L /h（HRT was 5.5 h）,the external reflux quantity was 0 L /h and pH was 7.0,the CODCr was reduced from 2000-2500 mg /L to 340-425 mg /L,with its removal rate being approximately 83% under constant conditions.The IC reactor produced 0.318-0.452 m3 gas per every 1 kg CODCr removed.The internal recycling water volume was equal to the amount of water intake when it removed 1.1 kgCODCr /（d.m3）.Both sulfate and calcium ions had certain influence on the IC reactor.Proper control is required during the operation.