Immobilized microbial technology can promote the removal of nitrogen and phosphorus pollutants in urban black and odorous water,but there is little research on the remediation of black and odorous water by related sulfur autotrophic denitrification synergistic immobilization microbial technology.By adding sulfur autotrophic denitrifying bacteria(NR-SOB)cultured by S2O32-domestication to the modified lanthanum bentonite-based microbial agent(La-Bt based complex agent),sulfur autotrophic denitrification synergistic immobilization microbial technology was introduced to remediate black and odorous water.Addition different dosages of NR-SOB to black and odorous water under dosage of 1.5 g/L La-Bt based complex agent,the synergistic effect of NR-SOB and La-Bt based complex agent in removing pollutants in black and odorous water was studied,and the changes of microbial community structure of sediment were analyzed by high-throughput sequencing.The results showed that when the NR-SOB dosage was 0.3 g/L,the compound microbial inoculant had a good effect on the treatment of black and odorous water and sediment.The removal efficiency of ammonia nitrogen,TN and TP from overlying water was 87.42％,69.85％and 71.11％,respectively.The removal efficiency of AVS from sediment was 34.76％,and the removal efficiency of sediment TN and TP was 45.22％and 45.04％,respectively.At the end of the experiment,the relative abundance of Firmicutes in the sediment decreased from 11.76％to 9.84％,the relative abundance of Thiobacillus reached 2.82％,and the proportion of nitrogen and sulfur removal of microbial bacteria increased by about 0.95％.
关键词
固定化微生物技术/城市黑臭水体/硫自养反硝化/复合微生物菌剂/脱氮除硫
Key words
immobilization microbial technology/urban black and odorous water/sulfur autotrophic denitrification/compound microbial inoculant/nitrogen and sulfur removal
维普
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