Classification of the degradability of 30 Pharmaceuticals in water with Ozone, UV and H_2O_2

摘要

The experiments were conducted to assess the degradability of 30 PPCPs that were selected on the basis of consumption and environmental relevance by O_3 process, UV process and AOPs consisting of UV/ H_2O_2. O_3/UV and O_3/H_2O_2. A batch reactor with volume of 22L of water including the PPCPs was used. For UV process, combination of UV and H_2O_2 or O_3 that can generate OH radicals was capable of degrading the PPCPs faster than UV radiation alone. On the other hand, O_3 process and O_3-based/UV-based AOPs could remove a variety of the PPCPs effectively, while some PPCPs such as 2-QCA, DEET and cyclophosphamide showed a relatively low degradability compared to the other PPCPs. However, further evaluate on formation of intermediate products resulted from the degradation of the parent PPCPs will be needed because DOC concentration was not decreased with dereasing the concentrations of the PPCPs.