在处理酸性废水的光生物反应器系统中，性能、类胡萝卜素产量和微生物种群动态：水力停留时间（HRT）和有机负荷率（OLR）的影响。
Performance, carotenoids yield and microbial population dynamics in a photobioreactor system treating acidic wastewater: Effect of hydraulic retention time (HRT) and organic loading rate (OLR).
机构信息
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; School of Environment and Resource, Renmin University of China, Beijing 100872, China.
出版信息
Bioresour Technol. 2016 Jan;200:245-52. doi: 10.1016/j.biortech.2015.10.044. Epub 2015 Oct 17.
Effects of hydraulic retention time (HRT) and influent organic loading rate (OLR) were investigated in a photobioreactor containing PNSB (Rhodopseudomonas palustris)-chemoheterotrophic bacteria to treat volatile fatty acid wastewater. Pollutants removal, biomass production and carotenoids yield in different phases were investigated in together with functional microbial population dynamics. The results indicated that properly decreasing HRT and increasing OLR improved the nutrient removal performance as well as the biomass and carotenoids productions. 85.7% COD, 89.9% TN and 91.8% TP removals were achieved under the optimal HRT of 48h and OLR of 2.51g/L/d. Meanwhile, the highest biomass production and carotenoids yield were 2719.3mg/L and 3.91mg/g-biomass respectively. In addition, HRT and OLR have obvious impacts on PNSB and total bacteria dynamics. Statistical analyses indicated that the COD removal exhibited a positive relationship with OLR, biomass and carotenoids production. PNSB/total bacteria ratio had a positive correlation with the carotenoids yield.
在含有 PNSB（沼泽红假单胞菌）-化能异养菌的光生物反应器中，研究了水力停留时间（HRT）和进水有机负荷率（OLR）对处理挥发性脂肪酸废水的影响。研究了不同阶段的污染物去除、生物量生产和类胡萝卜素产量以及功能微生物种群动态。结果表明，适当降低 HRT 和增加 OLR 可以提高养分去除性能以及生物量和类胡萝卜素的产量。在最佳 HRT 为 48h 和 OLR 为 2.51g/L/d 的条件下，COD、TN 和 TP 的去除率分别达到 85.7%、89.9%和 91.8%。同时，生物量和类胡萝卜素的最高产量分别为 2719.3mg/L 和 3.91mg/g-生物质。此外，HRT 和 OLR 对 PNSB 和总细菌动态有明显影响。统计分析表明，COD 去除与 OLR、生物量和类胡萝卜素产量呈正相关。PNSB/总细菌比与类胡萝卜素产量呈正相关。
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