Study on efficiency of algal-bacterial membrane bioreactor treating antibiotic wastewater and membrane fouling thereof
In order to explore the efficiency of algal-bacterial membrane bioreactor treating antibiotic wastewater and the membrane pollution status,algal-bacterial membrane bioreactor(R1)and traditional mem-brane bioreactor(R2)were constructed and used to treat sulfamethoxazole(SMX)antibiotic wastewater.The re-sults showed that,the average removal rates of COD,NH4+-N、PO43--P and SMX were 0.48%,10.45%,42.16%and 38.81%higher respectively in R1than that in R2,which indicated that the treatment efficiency of R1 reactor was superior to R2 reactor.According to the analysis on transmembrane pressure difference(TMP)and extracel-lular polymer(EPS),it could be found that,compared to R2 reactor,R1 reactor revealed shorter cleaning cycle,and the EPS content was 52.77%higher,which indicated that the membrane permeability of algal-bacterial membrane bioreactor decreased and its membrane fouling was aggravated.