[Application of biological aerated filter in treating biomass wastewater and its microbial population characteristics].
Biomass wastewater contains plenty of cellulose, hemicellulose, starch, saccharide, organic acid and protein. It has high COD value and leads to environment pollution and resource waste. Biomass wastewater was treated in this investigate using a biological aerated filter (BAF) on laboratory scale, and the effect of treatment in different hydraulic retention time (HRT) had been studied. The results show that the optimum HRT is 10 h. The value of COD and TN in effluent is 74.90 mg/L and 1.21 mg/L respectively when run 10 h, which are under the highest concentration of the second category of pollutant discharge allowed in the state sewage discharge standard (GB 8978-1996). When the system is stabile, evaluating the population characteristics of dominating microorganism in BAF with biology analysis such as microbial screening, single bacteria evaluation and 16S rDNA sequences analysis. The dominant bacteria belonged to Pseudomonas sp., Acinetobacer sp., Stenotrophomonas sp., Rhodococcus sp.and Microbacterium sp..
Yang
Jin-Shui
JS
College of Biological Science, China Agricultural University, Beijing 100094, China. yangjsh1999@163.com
Liu
Wei-Jie
WJ
Wu
Jia-Lian
JL
Li
Bao-Zhen
BZ
Yuan
Hong-Li
HL
D000150:Acinetobacter / Q000378:metabolism*; D019149:Bioreactors / Q000382:microbiology*; D002244:Carbon / Q000378:metabolism*; D005374:Filtration; D009930:Organic Chemicals / Q000378:metabolism; D011549:Pseudomonas / Q000378:metabolism*; D012240:Rhodococcus / Q000378:metabolism; D020588:Stenotrophomonas / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000379:methods*
D009930:Organic Chemicals; D002244:Carbon