摘要
采用纳米零价铁(nZVI)-厌氧颗粒污泥膨胀床(EGSB)耦合处理印染废水,以活性艳红X-3B溶液模拟印染废水,单独nZVI和单独EGSB作为空白对照,考察了不同nZVI浓度、pH、初始X-3B浓度、温度等条件对该耦合体系处理效果的影响。试验结果表明:nZVI/EGSB耦合体系能有效去除印染废水的色度,在染料X-3B初始浓度为100 mg/L,nZVI投加量为0.5 g/L,pH 6.0,30℃的条件下,48 h以内去除率可达98.93%。该耦合体系脱色效果明显高于单独nZVI或单独EGSB反应器处理效果,有较好的应用前景。
A system combined nano zero-valent iron（nZVI） and anaerobic microorganisms was used to treat printing and dyeing wastewater, and the influence of nZVI concentration, initial pH, initial X-3B concentration and temperature on the combination system was studied, with individual nZVI treatment and individual anerobic microoganism treatment as the blank contrast. Result shows that the combination of nano zero-valent iron and a EGSB reactor works well in treating printing and dyeing wastewater. X-3B decolorization rate of combination system is higher than individual nZVI fixed bed and individual EGSB reactor. With the increase of the concentration of initial Brilliant Red X-3B, the X-3B decolorization rate of the combination system decreases. The decolorization rate of 98.93% within 48 h is obtained under the appropriate conditions of nZVI dosage for the system 0.5 g/L, pH 6.0 and temperature 30 ℃.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2016年第5期80-84,共5页
Environmental Science & Technology
基金
湖北省教育厅中青年项目:生物电化学强化对染料废水厌氧生物处理的影响及其机制研究(Q20151603)
