Characteristics of nitrophenol wastewater treatment via a NZVI/microorganism coupling system

摘要

Nitrophenol was selected as the target pollutant for an intermittent test and was mixed with anaerobic microorganisms to inspect the degradation of the nitrophenol at different dosages of nanoscale zero-valent iron (NZVI), initial pH levels, and initial nitrophenol concentrations, using glucose as a co-substrate. The research results indicated that the degradation effect of nitrophenol with the NZVI/microorganism coupling system was obviously higher than that of a single-NZVI/single-microorganism system. There was a noticeable synergistic effect between the NZVI and anaerobic microorganisms, and the motivational effect of the coupling system on the target pollutant with a neutral or acidic environment was more overt than that with an alkaline environment. The degradation of nitrophenol was enhanced as the dosage of NZVI increased.