摘要
采用Fe^(2+)活化Na_2S_2O_8技术处理实际焦油蒸馏废水。首先通过正交试验考察了Na_2S_2O_8初始浓度、Fe^(2+)初始浓度、pH以及温度等条件对稀释后焦油蒸馏废水COD去除率的影响规律,然后通过单因素实验确定了其最佳反应条件。实验结果表明,当p H为7.00,Na_2S_2O_8初始浓度为20mmol/L,Fe^(2+)初始浓度为20 mmol/L条件下,在30℃降解反应120 min,其化学需氧量(COD)去除率为53.5%,总有机碳(TOC)去除率为62.2%,降解过程遵循指数衰减规律,为焦油蒸馏废水的预处理技术提供了一条新的途径。
The Fe2+ activated Na2S2O8 technology was used to treat the actual tar distillation wastewater. Firstly, the effect of initial concentration of Na2S2O8, initial concentration of Fe2+, pH and temperature on the COD removal rate of diluted tar distillation wastewater was investigated by orthogonal test. Then the optimal reaction conditions were determined by single factor experiments. The experimental results showed that when the pH was 7.00, the initial concentration of Na2S2O8 was 20 mmol/L, and the initial concentration of Fe2+ was 20 mmol/L, the degradation reaction was performed at 30°C for 120 min,the removal rate of COD was 53.5%,the removal rate of carbon(TOC) was 62.2%, and the degradation process followed the law of exponential decay. The paper can provide a new approach for the pretreatment of tar distillation wastewater.
作者
殷茂炬
任百祥
赵盈斌
杨春维
YIN Mao-ju;REN Bai-xiang;ZHAO Ying-bin;YANG Chun-wei(Key Laboratory of Environmental Materials and Pollution Control,Jilin Normal University,Jilin Siping 13600,China;College of Environmental Science and Engineering,Jilin Normal University,Jilin Siping 13600,China;Liaoning Donghao Chemical Co.,Ltd.,Liaoning Benxi 117000,China)
出处
《辽宁化工》
CAS
2019年第2期103-105,共3页
Liaoning Chemical Industry
基金
吉林省科技厅重点科技攻关项目(20150204049SF)
关键词
焦化废水
过硫酸盐
预处理
coking wastewater
persulfate
pretreatment
