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首页> 外文期刊>Bioprocess and Biosystems Engineering >Accelerated start-up of moving bed biofilm reactor by using a novel suspended carrier with porous surface
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Accelerated start-up of moving bed biofilm reactor by using a novel suspended carrier with porous surface

机译：通过使用具有多孔表面的新型悬浮载体，加速移动床生物膜反应器的启动

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摘要

A novel suspended carrier with porous surface was firstly prepared by coating a sponge on the inside and outside of a hard polyethylene ring. Herein the effects of the sponge thickness (0, 2, 4, 6 mm) and pore size (17, 45, 85 pores per inch, ppi) on the performance of the start-up stage in moving bed biofilm reactor (MBBR) were investigated. The results indicated that the home-made carrier with the sponge thickness of 4 mm and the pore size of 45 ppi, defined as SC4-45, showed the best performance, which obtained high biomass concentration of 2,136.6 mg/ L, oxygen uptake rate for COD of 150.1 mg O_2/h and oxygen uptake rate for NH_4~+-N of 17.4 mg O_2/h. The DGGE profiles of the biofilms obtained in SC4-45 and a commercial carrier showed a similar community as the Dice similarity coefficients between two samples was 0.72. Furthermore, 16S rRNA gene sequence analysis reveals dominance of Sphaerotilus sp. and Aeromonas sp. in the community of both samples. Moreover, for the MBBR based on SC4-45, COD and NH_4~+-N removal rates reached 99.5 ± 1.1 and 93.6 ± 2.3 % at the end of the start-up stage, much higher than those of the commercial carrier, 74.9 ± 2.7 and 40.0 ± 1.8 %, respectively. These indicated the novel carrier obtained a quick start-up.
机译：首先，通过在硬质聚乙烯环的内侧和外侧涂覆海绵来制备具有多孔表面的新型悬浮载体。在此，海绵厚度（0、2、4、6 mm）和孔径（每英寸17、45、85个孔，ppi）对移动床生物膜反应器（MBBR）中启动阶段性能的影响为调查。结果表明，海绵厚度为4 mm，孔径为45 ppi的自制载体SC4-45表现出最佳性能，其生物质浓度高达2,136.6 mg / L，吸氧率高达COD为150.1 mg O_2 / h，NH_4〜+ -N的氧气吸收率为17.4 mg O_2 / h。在SC4-45和商业载体中获得的生物膜的DGGE谱显示出相似的群落，因为两个样品之间的Dice相似系数为0.72。此外，16S rRNA基因序列分析揭示了Sphaerotilus sp的优势。和气单胞菌在两个样本的社区中。此外，对于基于SC4-45的MBBR，在启动阶段结束时，COD和NH_4〜+ -N去除率分别达到99.5±1.1和93.6±2.3％，远高于商业运营商的74.9±分别为2.7和40.0±1.8％。这些表明新型载体获得了快速启动。

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  • 来源
    《Bioprocess and Biosystems Engineering》 |2015年第2期|273-285|共13页
  • 作者

    Xin Chen; Lingjun Kong; Xingyu Wang; Shuanghong Tian; Ya Xiong;

  • 作者单位

    School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, People's Republic of China,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, People's Republic of China;

    School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, People's Republic of China,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, People's Republic of China;

    School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, People's Republic of China,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, People's Republic of China;

    School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, People's Republic of China,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, People's Republic of China;

    School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, People's Republic of China,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Moving bed biofilm reactor; Suspended carrier; Start-up; Sponge; Bacterial activity;

    机译：移动床生物膜反应器;吊架;启动;海绵;细菌活动;

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