连续流入式循环生物反应器中糠醛生物降解的研究
Investigation of furfural biodegradation in a continuous inflow cyclic biological reactor.
作者信息
Moussavi Gholamreza, Leili Mostafa, Nadafi Kazem
机构信息
Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Jalale-Ale Ahmad Avenue, P. O. Box 14115-331, Tehran, Iran E-mail:
Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Shahid Fahmideh Avenue, P. O. Box 65175-417, Hamadan, Iran.
出版信息
Water Sci Technol. 2016;73(2):292-301. doi: 10.2166/wst.2015.488.
The performance of a continuous inflow cyclic biological reactor (CBR) containing moving media was investigated for the degradation of high concentrations of furfural. The effects of hydraulic retention time (HRT) and furfural initial concentrations (loading rate), as main operating parameters, on the bioreactor performance were studied. The results indicated that the CBR could remove over 98% of furfural and 71% of its chemical oxygen demand (COD) at inlet furfural concentrations up to 1,200 mg L(-1) (2.38 g L(-1) d(-1)), a 6-h cycle time and HRT of 12.1 h. The removal efficiency decreased slightly from 98 to 94% when HRT decreased from 12.1 to 10.5 h. The average removal efficiency of furfural and COD during the 345-day operational period under steady-state conditions were 97.7% and 82.1%, respectively. The efficiency also increased approximately 17.2% after addition of synthetic polyurethane cubes as moving media at a filling ratio of 10%.
研究了含有移动介质的连续进水循环生物反应器（CBR）对高浓度糠醛的降解性能。研究了水力停留时间（HRT）和糠醛初始浓度（负荷率）这两个主要运行参数对生物反应器性能的影响。结果表明，在进水糠醛浓度高达1200 mg L⁻¹（2.38 g L⁻¹ d⁻¹）、循环时间为6小时且HRT为12.1小时的条件下，CBR能够去除超过98%的糠醛及其71%的化学需氧量（COD）。当HRT从12.1小时降至10.5小时时，去除效率从98%略有下降至94%。在稳态条件下345天的运行期间，糠醛和COD的平均去除效率分别为97.7%和82.1%。在以10%的填充率添加合成聚氨酯立方体作为移动介质后，效率也提高了约17.2%。
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