吹脱-Fenton氧化法预处理头孢制药废水

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彭人勇， 谢晓梅

(青岛科技大学 环境与安全工程学院，山东 青岛 266042）

摘要： 采用吹脱-Fenton氧化法对某制药厂头孢类废水进行预处理，综合考察了各种因素对处理效果的影响。结果表明：氨氮吹脱实验中，在pH值为12，反应温度35 ℃，吹脱时间120 min，气液比1 800下，废水的氨氮去除率可达到95.4%；Fenton氧化出水最优工艺条件为pH值4，反应时间60 min，n(Fe2+)/n(H2O2)为1/3，H2O2的投入量20 mL·L^-1，此时，COD_Cr去除率为40.8%。制药废水经预处理后，废水的可生化性由初始的0.16上升至0.55，生化性显著提高，为后续生化处理提供了有利条件。

关键词：  头孢制药废水； 氨氮吹脱； Fenton氧化； 预处理

中图分类号： X 787文献标志码： A

Pretreatment of Cephalosporin Pharmaceutical Wastewater by Ammonia BlowingFenton Oxidation

PENG Renyong, XIE Xiaomei

(College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China）

Abstract: The pharmaceutical wastewater of Cephalosporin was pretreated by ammonia blowing-Fenton oxidation, and the effects of various factors on the treatment efficiency were investigated Synthetically. The results show that the removal rate of ammonia-nitrogen could reach 95.4% at the pH value of 12, temperature of 35 ℃, blowing time of 120 min, air-liquid ratio of 1 800 on the experiment of ammonia blowing. The optimal technological conditions for Fenton oxidation experiment were obtained as the pH value of 4, reaction time of 60 min, n(Fe2+)/n(H2O2) of 1/3, H2O2 dosage of 20 mL·L-1, and the removal rate of COD_Cr  could reach 40.8%. After the pretreatment, the pharmaceutical wastewater′s biodegradability has increased obviously from the initial 0.16 to 0.55, which provided advantages for the subsequent biochemical treatment.

Key words: Cephalosporin pharmaceutical wastewater； ammonia blowing； Fenton oxidation； pretreatmen

 收稿日期： 20150713

作者简介： 彭人勇（1962—），男，教授.

文章编号： 16726987（2016）05050206； DOI： 10.16351/j.16726987.2016.05.006