Experiments on the biodegradation of phenol wastewater by immobilized photosynthetic bacteria

After domestication with phenol wastewater and culturation in an RCVBN medium,photosynthetic bacteria(PSB) were immobilized by sodium alginate-chitosan-powder active carbon microcapsules.The immobilized PSB and dissociated PSB were both used to biodegrade phenol wastewater at different temperatures and under different inoculation quantities.By measuring the concentration of the phenol,it was found that both forms of PSB have the ability to degrade phenol wastewater,the treatment effect varied under different states,and the effect of immobilized PSB is better.An orthogonal experiment indicates that the most important factor affecting the degradation of phenol wastewater with immobilized PSB is temperature,followed by inoculation quantity and pH.When the temperature is 30℃,the inoculation quantity is 20%,and pH is 7.0,the best degradation effect is obtained and the removal rate reaches 85.3%.