摘要
利用内电解法与厌氧污泥联用,作为硝基苯处理的预处理方法。通过实验确定内电解法的pH值、反应时间、铁的用量、催化剂及厌氧污泥的停留时间等最佳反应条件,从而提高硝基苯处理效率。实验确定:对于质量浓度为300mg/L硝基苯,在pH值为3、反应时间为90 min、并加入铜作为催化剂时,其去除率达到80%以上。而厌氧污泥经过60 d左右的驯化时间,在停留时间达到36 h的时候,去除率也在50%以上。而通过二者的联用硝基苯去除率高于90%,提高了废水的可生化性。
As a method of pretreatment to degradate nitrobenzene, this experiment unites micro-electrolysis and anaerobic bacterium. By confirming optimal condition such as pH, react time, ferric dosage, catalyst and retention time of anaerobic bacterium and so on, disposal efficiency of nitrobenzene was improved. Conclusion from experiment： for 300 mg/L nitrobenzene, separately, when pH is 3, reaction time is above 90 rain and when catalyzer is existed, disposal efficiency of nitrobenzene is above 80%. And for anaerobic bacterium, after domestication for 60 days, when retention time is more than 36 h, disposal efficiency of nitrobenzene is above 50%. And when the two is united, disposal efficiency of nitrobenzene will be more than 90% and biodegradability of wastewater is improved obviously.
出处
《环境科技》
2010年第A02期47-49,共3页
Environmental Science and Technology
关键词
硝基苯
厌氧污泥
内电解
Nitrobenzene
Anaerobic bacterium
Micro-electrolysis
