NGHIÊN CỨU XỬ LÝ KHÁNG SINH TRONG NƯỚC THẢI BỆNH VIỆN BẰNG HỆ OXY HÓA KÉP HOẠT HÓA BẰNG SẮT HÓA TRỊ 0 (ZVI) VÀ TIA UV

Tóm tắt

The feasibility of the application of the advanced oxidation process (AOPs) coupling H2O2 and
persulfate activated by zero valent iron (ZVI) and UV in the treatment of hospital wastewater
contaminated by Ciprofloxacin (CIP), Amoxicillin (AMO) antibiotic was evaluated. The Response
Surface Methodology (RSM) based on Box Behnken Design (BBD) was used to evaluate and optimize
the effect of persulfate, hydrogen peroxide, ZVI concentration, UV intensive and time of reaction as
independent variables on CIP and AMO removal as the response function. The significance of the
independent variables and their interactions was tested by means of analysis of variance (ANOVA) with
a 95% confidence level. Results show that the concentration of ZVI and time of reaction were the main
parameters affecting CIP removal, while persulfate concentration, UV intensive and time of reaction
had a significant effect on AMO reduction. The optimum operating conditions to achieve maximum CIP
and AMO removal were determined. The model prediction for maximum CIP, AMO removal was
compared to the experimental result at optimal operating conditions. A good agreement between the
model prediction and experimental results confirms the soundness of the developed model.