摘要
为利用吸附浓缩与芬顿氧化组合工艺处理印染废水二级生化出水,考察了吸附过程中吸附剂用量、吸附时间和pH值等因素的影响,研究了芬顿氧化过程中Fe^(2+)浓度、H_2O_2浓度、加药方式、反应时间、脱附浓缩液pH值、回调剂和反应过程中最高温度等因素的影响。结果表明:当吸附剂投加量为4g·L^(-1)、pH值为7、吸附时间为30min时,吸附效果最佳;吸附浓缩液在Fe^(2+)浓度为0.1mol·L^(-1)、H_2O_2浓度为2mol·L^(-1)、芬顿试剂等分3次投加、反应时间为1h的条件下,芬顿氧化处理效果最好。该组合工艺在实现废水减量化的同时可提高废水的可生化性,因此有望为印染废水深度处理提供一种高效的工艺。
The combined process of adsorption concentration and Fenton oxidation technology was used for the secondary effluent treatment of printing and dyeing wastewater.The influencing factors of adsorbent dosage,adsorption time and pH value on the adsorption were studied.Moreover,the effects of Fe2+concentration,H2O2concentration,different dosing modes,reaction time,pH value of desorption solution,the conditioning reagent and the highest temperature in Fenton oxidation process were also investigated.It is shown that the best adsorption condition is as follows:adsorbent dosage4g·L-1,pH value7,and adsorption time30min.As for the concentrated solution after desorption,01mol·L-1of Fe2+,2mol·L-1of H2O2,dosing mode of trisection adding,and reaction time of1hour are found to be the best Fenton oxidation condition.The combined process can reduce the amount of the wastewater and improve the biodegradability.So this method can be considered as an efficient process for the treatment of printing and dyeing wastewater.
作者
刘京
杜进芳
武佳
冯江涛
延卫
LIU Jing;DU Jinfang;WU Jia;FENG Jiangtao;YAN Wei(Shaanxi Ziyang Xianggui Manganese Co., Ltd., Ziyang, Shaanxi 725308, China;Department of Environmental Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China)
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2018年第1期158-164,共7页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(21307098)
陕西省重点研发计划资助项目(2017SF-386)
中央高校基本科研业务费专项资金资助项目
关键词
废水处理
印染废水
二级生化出水
吸附
芬顿氧化
wastewater processing
printing and dyeing wastewater
secondary effluent
adsorption
Fenton oxidation
