【摘要】 通过对污水处理厂出水排放到自然水体之前对其进行进一步处理，可减轻水体的富营养化。本研究在膜光生物反应器中培养蛋白小球藻，进一步去除污水处理厂出水中的氮。研究了水力停留时间对微藻生物量和养分去除的影响。研究发现，MPBR处理二次出水的最佳HRT为8 h。结果表明，缩短HRT增加了膜通量，使悬浮液中的SAP更快地向膜移动，加剧了膜污染。但降低HRT可以通过减少悬液中的SAP和竞争细菌以及提高蛋白小球藻的生长速度来提高系统稳定性，提高污染物的去除率。更多还原

【Abstract】 Further treatment of secondary effluents before their discharge into the receiving water bodies could alleviate water eutrophication. In this study, the Chlorella proteinosa was cultured in a membrane photobioreactor to further remove nitrogen from the secondary effluents. The effect of hydraulic retention time(HRT) on microalgae biomass yields and nutrient removal was studied. The study found that an HRT of 8 h was optimal for the MPBR treating secondary effluents.The results reveal that shortening HRT increased membrane flux, making SAP in the suspension move to the membrane faster and aggravate membrane fouling. But lowering the HRT improved system stability and increased the removal rates of pollutants by decreasing the SAP and competing bacteria in the suspension and increasing the growth rates of Chlorella proteinosa.更多还原