复频超声降解土霉素废水  

Degradation of oxytetracycline in wastewater by multi-frequency ultrasonic

作　　者：程琛[1] 闫正[2] 

机构地区：[1]宿州学院资源与土木工程学院,安徽宿州234000 [2]河北大学环境工程研究所,河北保定071000

出　　处：《化工进展》2015年第4期1143-1146,1164,共5页Chemical Industry and Engineering Progress

基　　金：安徽省煤矿勘探工程技术研究中心平台项目(2014YKF05)

摘　　要：以抗生素土霉素为研究对象,采用自制复频超声波污水处理装置,通过正交实验探究超声频率、功率、超声作用时间和土霉素效价4个正交因子对去除率的影响,以及通过4组不同复频组合的超声实验,研究复频超声对土霉素去除率及COD去除率的影响。结果表明,各因素的影响权重:超声频率>作用时间>效价>超声功率,超声频率对土霉素的降解起重要作用;高频复频组合条件下土霉素去除率和COD去除率比低频复频组合高,但高低频组合的复频20k Hz+100k Hz+200k Hz条件下,土霉素去处效果最好;最佳复频组合条件下处理体积为40L的土霉素经30min复频超声作用,去除率接近100%,60 min COD去除率达90%以上。This research investigated degradation of oxytetracycline in wastewaterusing self-made sewage treatment device with multi-frequency ultrasonic. The ultrasonic frequency,power,ultrasonic time and titer four orthogonal factors’ influence on oxytetracycline removal rate through the orthogonal experiment were evaluated. The influences of four different combinations of multi-frequency ultrasonic experiment on removal rates of oxytetracycline and COD were also studied. The results showed that the influencing factors were weighted as the following：ultrasonic frequency ＆gt; ultrasonic time ＆gt; titer ＆gt; ultrasonic power. Ultrasonic frequency was very important in the degradation of oxytetracycline. Removal rates of both oxytetracycline and COD were higher under high-frequency combinations of multi-frequency ultrasonic. The degradation reached maximum when the multi-frequency combination was at 20kHz ＋ 100kHz ＋ 200kHz. Under this multi-frequency ultrasonic condition,the removal rate of oxytetracycline was close to 100% within 30 minutes and more than 90% of COD was removed within 60 at the processing volume of 40L.

关 键 词：复频超声污水处理装置 降解 土霉素 正交实验 

分 类 号：X787[环境科学与工程—环境工程]