Process optimization and microbial community analysis of styrene waste gas removal by rotating drum biofilter
High-efficiency composite strain agent was screened from active sludge and used to remove styrene waste gas by rotating drum biofilter.Single factor experiments were conducted to investigate the effect of NaCl mass fraction,pH,temperature,ratating speed and gas volume flow rate on styrene removal efficiency,and the results showed that the first 3 factors had significant influence on the styrene degradation(P＜0.05).Further,response surface optimization experiment was used to optimize the first 3 factors.Among them,temperature had the least influence,but pH the most.When pH was 7.0,temperature was 33.46 ℃,and NaCl mass fraction was 0.97％,the styrene removal rate reached the peak of 96.49％.Microbial community analysis showed that Proteobacteria was dominant bacterial phylum in ratating drum biofilter,with the relative abundance of about 72％.Pseudomonas and Rhodanobacter were efficient genus,with the relative abundance of 34.86％and 7.69％,respectively.
NETL
NSTL
万方数据
