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Simultaneous removal of nutrient and sulfonamides from marine aquaculture wastewater by concentrated and attached cultivation of Chlorella vulgaris in an algal biofilm membrane photobioreactor (BF-MPBR).
Science of the Total Environment ( IF 9.8 ) Pub Date : 2020-04-07 , DOI: 10.1016/j.scitotenv.2020.138524
Yuan-Yuan Peng 1 , Feng Gao 1 , Hong-Li Yang 2 , Hang-Wei-Jing Wu 1 , Chen Li 1 , Miao-Miao Lu 1 , Zi-Yan Yang 1
Affiliation  

Microalgae based wastewater treatment has attracted increasing attention for its many advantages in recent years. In this study, a novel microalgae biofilm membrane photobioreactor (BF-MPBR) was developed for the efficient microalgae cultivation and the removal of nutrient and sulfonamides (SAs) from marine aquaculture wastewater. Two BF-MPBRs with hydraulic retention time (HRT) of 1 day and 2 days respectively were continuously operated for 70 days without harvesting microalgae. Concentrated and attached culture of marine Chlorella vulgaris was achieved in these continuous flow BF-MPBRs due to the suspended solid carriers and microfiltration membrane module in the reactors. The algal biomass productivity achieved in BF-MPBRs with HRT of 1 day and 2 days were 14.02 and 22.03 mg L-1 day-1, respectively. In addition, at the end of the cultivation, 60.4% and 45.0% of microalgae were fixed into algal biofilm in BF-MPBRs with 1 day and 2 day HRT, respectively. Compared with batch cultivation, more efficient nutrient and SAs removal performance was achieved in BF-MPBRs, although the HRT of the BF-MPBRs used in this study was only 1 or 2 days. During the stable operation stage of the BF-MPBRs, the reduction in dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP), sulfadiazine (SDZ), sulfamethazine (SMZ) and sulfamethoxazole (SMX) were found in the range of 91.0-99.6%, 92.1-98.4%, 61.0-79.2%, 50.0-76.7% and 60.8-82.1%, respectively. Therefore, nutrient and SAs were simultaneously and efficiently removed from marine aquaculture wastewater by microalgae cultivation in BF-MPBR.

中文翻译:

通过在藻类生物膜膜光生物反应器(BF-MPBR)中浓缩和附着培养小球藻,同时从海水养殖废水中去除营养物和磺酰胺。

近年来,基于微藻的废水处理因其许多优势而受到越来越多的关注。在这项研究中,新型的微藻生物膜膜光生物反应器(BF-MPBR)被开发用于有效的微藻培养和从海水养殖废水中去除营养素和磺酰胺(SAs)。在没有收获微藻的情况下,将两个分别具有1天和2天水力停留时间(HRT)的BF-MPBR连续运行70天。由于反应器中悬浮了固体载体和微滤膜组件,因此在这些连续流动的BF-MPBR中实现了浓缩和附着的小球藻的培养。HRT为1天和2天的BF-MPBR中实现的藻类生物量生产力分别为14.02和22.03 mg L-1 day-1。此外,在耕种结束时,1天和2天HRT分别将60.4%和45.0%的微藻固定在BF-MPBR中的藻类生物膜中。与分批培养相比,尽管本研究中使用的BF-MPBR的HRT仅1或2天,但在BF-MPBR中实现了更有效的营养和SAs去除性能。在BF-MPBR的稳定运行阶段,发现溶解态无机氮(DIN),溶解态无机磷(DIP),磺胺嘧啶(SDZ),磺胺二甲嘧啶(SMZ)和磺胺甲恶唑(SMX)的减少幅度为91.0-分别为99.6%,92.1-98.4%,61.0-79.2%,50.0-76.7%和60.8-82.1%。因此,通过在BF-MPBR中进行微藻培养,可同时有效地从海水养殖废水中去除营养物和SA。分别。与分批培养相比,尽管本研究中使用的BF-MPBR的HRT仅1或2天,但在BF-MPBR中实现了更有效的营养和SAs去除性能。在BF-MPBR的稳定运行阶段,发现溶解态无机氮(DIN),溶解态无机磷(DIP),磺胺嘧啶(SDZ),磺胺二甲嘧啶(SMZ)和磺胺甲恶唑(SMX)的减少幅度为91.0-分别为99.6%,92.1-98.4%,61.0-79.2%,50.0-76.7%和60.8-82.1%。因此,通过在BF-MPBR中进行微藻培养,可同时有效地从海水养殖废水中去除营养物和SA。分别。与分批培养相比,尽管本研究中使用的BF-MPBR的HRT仅1或2天,但在BF-MPBR中实现了更有效的营养和SAs去除性能。在BF-MPBR的稳定运行阶段,发现溶解无机氮(DIN),溶解无机磷(DIP),磺胺嘧啶(SDZ),磺胺二嗪(SMZ)和磺胺甲恶唑(SMX)的减少幅度为91.0-分别为99.6%,92.1-98.4%,61.0-79.2%,50.0-76.7%和60.8-82.1%。因此,通过在BF-MPBR中进行微藻培养,可同时有效地从海水养殖废水中去除营养物和SA。在BF-MPBR的稳定运行阶段,发现溶解无机氮(DIN),溶解无机磷(DIP),磺胺嘧啶(SDZ),磺胺二嗪(SMZ)和磺胺甲恶唑(SMX)的减少幅度为91.0-分别为99.6%,92.1-98.4%,61.0-79.2%,50.0-76.7%和60.8-82.1%。因此,通过在BF-MPBR中微藻培养可同时有效地从海水养殖废水中去除营养物和SA。在BF-MPBR的稳定运行阶段,发现溶解无机氮(DIN),溶解无机磷(DIP),磺胺嘧啶(SDZ),磺胺二嗪(SMZ)和磺胺甲恶唑(SMX)的减少幅度为91.0-分别为99.6%,92.1-98.4%,61.0-79.2%,50.0-76.7%和60.8-82.1%。因此,通过在BF-MPBR中微藻培养可同时有效地从海水养殖废水中去除营养物和SA。
更新日期:2020-04-08
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