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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (29): 190-194.

• 工程 机械 水利 装备 • 上一篇    下一篇

超声波联合混凝法处理制药废水的研究

刘香兰 刘桂兰 肖广全   

  • 收稿日期:2012-01-16 修回日期:2012-04-10 出版日期:2012-10-15 发布日期:2012-10-15

The Study of Ultrasonic and Coagulation to Deal with Pharmaceutical Wastewater

  • Received:2012-01-16 Revised:2012-04-10 Online:2012-10-15 Published:2012-10-15

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摘要：

为了探讨单独超声波降解法、混凝法及2种方法联合处理制药废水的可行性，研究了超声波辐射时间、功率以及混凝剂的种类、浓度对制药废水中COD和NH3-N去除的影响。结果表明：（1）超声波单独处理制药废水时，COD和NH3-N去除率先随着超声波辐射时间(200~1000 s)的增大而增大，最佳时间为1000 s，COD和NH3-N的最大去除率分别为27.80%、45.34%；超声波辐射时间为1000 s，COD和NH3-N去除率随着超声波辐射功率的增大而先增大后减小。（2）单独用混凝剂处理制药废水时，COD的去除率随着混凝剂的浓度(0.1~0.6 g/L)的增大而先增大后减小，PAC在0.3 g/L时为最佳，COD的去除率为40.10%，NH3-N的平均去除率保持在5%左右。（3）在各自的最佳状态下，先用超声波处理后加混凝剂比先加混凝剂后用超声波处理的COD和NH3-N的去除率高，分别为61.24%、58.63%。试验表明，先用超声波处理后加混凝剂比先加混凝剂后用超声波处理对COD和NH3-N的去除率高。

关键词: 正交试验, 正交试验

Abstract:

In order to study the removal rates of the COD and NH3-N of pharmaceutical wastewater with the separate ultrasonic degradation, coagulation and combined two treatments, the removal rates of the COD and NH3-N with ultrasonic radiation time, power and coagulant species were studied. The results showed that: (1) the removal rates of the COD and NH3-N of the pharmaceutical wastewater by ultrasonic increased at the beginning and then finally tended to be decreased. In regard to the removal rates of COD and NH3-N, the best treatment time was 1000 s, the removal rates of COD and NH3-N were 27.80% and 45.34%, separately. When ultrasonic radiation time was 1000 s, he removal rates of the COD and NH3-N of the pharmaceutical wastewater by ultrasonic power increased at the beginning and then decreased. (2) The removal rates of COD and NH3-N of the pharmaceutical wastewater by coagulation (0.1-0.6 g/L) increased at the beginning and then decreased. The best treatment was 0.3 g/L of PAC. The removal rates of COD was 40.10% ,but the average removal rates of the NH3-N is about 5%. (3) In the most condition, ultrasonic treatment then combined with coagulant was better than coagulant then combined with ultrasonic treatment, the removal rates of COD and NH3-N were 61.2% and 58.6%, separately. Removal rates of COD and NH3-N with ultrasonic treatment, then combined with coagulant was better than coagulation then combined with ultrasonic treatment.