CIESC Journal ›› 2021, Vol. 72 ›› Issue (8): 4346-4353.DOI: 10.11949/0438-1157.20201672
• Energy and environmental engineering • Previous Articles Next Articles
Received:
2020-11-19
Revised:
2021-02-17
Online:
2021-08-05
Published:
2021-08-05
Contact:
Chongwen JIANG
通讯作者:
蒋崇文
作者简介:
谢乐(1989—),男,博士,讲师,基金资助:
CLC Number:
Le XIE, Chongwen JIANG. Simulation study on the removal of high concentration H2S waste gas by biotrickling filter[J]. CIESC Journal, 2021, 72(8): 4346-4353.
谢乐, 蒋崇文. 生物滴滤塔去除高浓度H2S废气的模拟研究[J]. 化工学报, 2021, 72(8): 4346-4353.
参数 | 数值 | 参数 | 数值 |
---|---|---|---|
气相中H2S扩散系数( | 1.8×10-5 m2/s | 气相中O2扩散系数(Dog) | 1.775×10-5 m2/s |
生物膜中H2S扩散系数( | 1.28×10-9 m2/s | 生物膜中O2扩散系数(Dos) | 2.86×10-9 m2/s |
H2S半饱和常数 (Kh) | 0.039 g/m3 | O2半饱和常数 (Ko) | 0.26 g/m3 |
最大比生长速率 (μmax) | 3.61 d-1 | O2亨利系数 (mo) | 34.13 |
H2S亨利系数 (mh) | 0.47 | 生物膜密度(Xb) | 28 kg/m3 |
产率(Yh) | 0.03 | 产率(Yo) | 0.3436 |
Table 1 Diffusion coefficients and kinetic parameters of biodegradation
参数 | 数值 | 参数 | 数值 |
---|---|---|---|
气相中H2S扩散系数( | 1.8×10-5 m2/s | 气相中O2扩散系数(Dog) | 1.775×10-5 m2/s |
生物膜中H2S扩散系数( | 1.28×10-9 m2/s | 生物膜中O2扩散系数(Dos) | 2.86×10-9 m2/s |
H2S半饱和常数 (Kh) | 0.039 g/m3 | O2半饱和常数 (Ko) | 0.26 g/m3 |
最大比生长速率 (μmax) | 3.61 d-1 | O2亨利系数 (mo) | 34.13 |
H2S亨利系数 (mh) | 0.47 | 生物膜密度(Xb) | 28 kg/m3 |
产率(Yh) | 0.03 | 产率(Yo) | 0.3436 |
Fig.2 The obtained axial H2S concentration distribution using the one-substrate and two-substrate models were compared with each other at different H2S inlet concentrations (EBRT is 10.9 s and biofilm thick is 20 μm)
Fig.3 The dynamic changes of the dimensionless H2S and O2 concentration in the biofilm when the H2S interfacial concentration is 7589.3 mg/m3 and the biofilm thickness is 20 μm
Fig.4 The dynamic changes of the dimensionless H2S and O2 concentration in the biofilm when the H2S interfacial concentration is 7589.3 mg/m3 and the biofilm thickness is 40 μm
Fig.6 Dimensionless H2S concentration in gas phase along the axial direction of the BTF at different H2S concentrations in the recirculated liquid phase
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