Biodegradation of Toluene in a Biofilter under Low Concentration
[1]ZHU Yazhong,LI Shunyi,LUO Yimeng,et al.Biodegradation of Toluene in a Biofilter under Low Concentration[J].Journal of Zhengzhou University (Engineering Science),2017,38(04):12-16.[doi:10.13705/j.issn.1671-6833.2017.01.010]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
38
Number of periods:
2017 04
Page number:
12-16
Column:
Public date:
2017-07-18
- Title:
- Biodegradation of Toluene in a Biofilter under Low Concentration
- Keywords:
- biofilter ; toluene; shutdown ; biodegradation
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2017.01.010
- Abstract:
- Self-made biological fillers embedded with Pseudomonas putida were used as biofilter packing materials for treating toluene.The effects of inlet loading rate (ILR) and empty bed residence time (EBRT) were evaluated.Changes in micro-organisms before and after the shut down period and its effect on biofilter performance were investigated.Results indicated that,no need for hanging film,activities of micro-organisms were high,capacity to eliminate toluene was strong.Optimal EBRT was 74.2 s,and removal efficiency ranged from 49.3 to 97.3 ％;maximum elimination capacity,16.97 g · (m3 · h)-1 was occurred at ILR of 22.11 g · (m3 · h)-1.The recovery time needed for achieving constant state,after biofilter shut down for 3 d,7 d and 30 d,were 5,21 and 45 h,respectively.Microbial counts after recovery were significantly higher than the 30d shut-down period,and lower layer had the highest microbial population.
- References:
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[1]MOE W M ，IRVINE R L. Polyurethane foam mediumfor biofiltration. I: Characterization [ J ]. Journal ofenvironmental engineering , 2000 , 126(9):815 - 825.[2]李顺义．一种包埋功能微生物缓释复合填料及其制备方法:201210446960.1[ P]. 2012 - 11 - 09.[3]李顺义，朱仁成，张雅丽，等．一种包埋微生物复合填料的制备及性能评价[J]．环境工程学报，2014,8( 1 ) : 260 - 265.
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