Research On The Interaction Of Bacteria And Typical PPCPs In Drinking Water

In recent years,pharmaceutical and personal care products(PPCPs)have been detected in the water environment,become a kind of emerging environmental pollutants.PPCPs not only appear in the sewage treatment plant,surface water,ground water and even appeared in the drinking water.The potential impact of PPCPs on microorganisms also caused some concern.The present study suggests that PPCPs will influence microbial community composition in the environment and induce the present study shows that the environmental impact of PPCPs microbial community composition and induce resistant bacteria.In this paper,influence of typical PPCPs on bacterial diversity in the drinking water was studied,and the status of antibiotic resistance genes in bacteria under the stress of typical PPCPs were also studied.Through the literature review and the actual situation of investigation,seven representative PPCPs as a typical experiment were selected.Respectively,penicillin G,sulfamethyldiazine,sulfamethoxazole,triclocarban,sotalol,disopyramide and sulpiride.Analyzed were made on the diversity of bacteria in drinking water samples that no PPCPs were added,and the risk of bacteria in drinking water were analyzed.The presence of pathogens in drinking water has a certain security risk.The pathogens are Acinetobacter,Pseudomonas,Lactococcus,Staphylococcus and Achromobacter.The change of the bacterial diversity in drinking water after adding different concentrations of seven kinds of typical PPCPs were studied.Bacterial diversity changes were analyzed on the view of the bacterial community structure,the species of bacteria and bacterial species abundance.The result showed that seven kinds of typical PPCPs have inhibitory effect on bacteria in drinking water.The inhibitory effect of triclocarban and sotalol on bacteria in drinking water increased with the change of concentration.Studies also made on antibiotic resistance genes in drinking water added sulfamethyldiazine and sulfamethoxazole,respectively.The result showed that no resistance genes sul1 and sul2 were detected in drinking water of no PPCPs added.Resistance genes sul2 were detected in drinking water samples that add sulfamonomethoxine.The result indicated that related bacteria in drinking water received external stress under the effect of sulfamonomethoxine,and resistance genes sul2 were induced.