In response to the current high COD concentration,complex composition and poor biodegradability of pharmaceutical wastewater,which had become an urgent problem to be solved in the pharmaceutical industry,a heterogeneous Fenton anaerobic expanded granular sludge bed pharmaceutical wastewater treatment device(ZL202221588605.3)patented by Ruisheng Environment Co.,Ltd.was adopted to explore the treatment efficiency of the heterogeneous Fenton enhanced EGSB.The research data showed that the process had good performance in treating pharmaceutical wastewater,and the heterogeneous Fenton could achieve strong oxidation performance under acidic and slightly alkaline(pH2～9)conditions.While avoiding the adjustment of the acidity and alkalinity of the treatment system,the dosage of H2O2 was also reduced to 80 mmol/L.After further strengthening the EGSB process,the pharmaceutical wastewater treated by the EGSB process met the discharge standards of the park's sewage treatment plant.
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