With the increasing demand for antibiotic drugs,the impact of pharmaceutical wastewater produced in the production process on the natural environment is becoming more and more significant.In this paper,the degradation effect of VUV/UV/Fenton combined process on sul-fonamide chlorpyridazine(SCP)in antibiotic pharmaceutical wastewater was studied,and the influence of different influencing factors on SCP removal was investigated.The results showed that at room temperature(25 ℃),pH=6,Fe2+concentration of 0.5 mM,H2O2 concentration of 12.5 mM,the degradation effect was the best,and the degradation rate reached 100％in 25 min.In the VUV/UV/Fenton process,the concentra-tion ratio of Fe2+and H2O2 is 1∶25,which greatly reduces the input of H2O2 content compared with the traditional Fenton process.Inorganic chlo-ride ions,nitrate ions and sulfate ions had little effect on SCP degradation(＜2.2％).Therefore,VUV/UV/Fenton process is very effective for the treatment of antibiotic wastewater.
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