研究污水处理中循环沉淀应用对微藻类生物量培养的影响。

IF 3.4 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Ismail S Bostanci, Ebru Koca Akkaya
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引用次数: 0

摘要

商业微藻生产经常因污染而中断,导致生产周期缩短、需要重新接种和培养失败,从而大大增加了成本。本研究的重点是调查循环沉淀应用(RSA),以控制用于废水处理的微藻培养系统中的污染。在 90 天的实验期内,在未经消毒的三级处理废水和厌氧消化废水污泥中心液混合物中培养普通小球藻。在光照强度为 275 μM m-2.s-1 且光暗周期为 16:8 小时的条件下,60 升的赛道反应器开始运行。为了评估 RSA 对生物问题的影响,实验分三个阶段进行。通过以下观察结果,确定了使用 RSA 的益处:在不释放培养物的情况下,以可接受的水平有效去除污染物;延长内壁生物膜形成时间;抑制异养菌和硝化作用;提高径流槽的悬浮固体截留能力(高达 770 mg.L-1);以及将氨去除率提高到约 30 mg.L-1d-1。RSA 中去除氨和生物量浓度的理想盐度应低于 0.02%。这些发现证明了植物修复在可持续废水处理方面的潜力,并为环境生物修复战略做出了贡献。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigating the impacts of a recirculation sedimentation application on microalgae biomass cultivation in wastewater treatment.

Commercial microalgae production is often interrupted by contamination, leading to short production cycles, reinoculation needs, and culture collapses, significantly increasing costs. This study focuses on investigating Recirculated Sedimentation Application (RSA) to control contamination in microalgae culture systems used for wastewater treatment. Chlorella vulgaris culture was grown in an unsterilized mixture of tertiary treatment effluent and centrate of anaerobic digestion wastewater sludge over a 90-day experimental period. 60 L raceway reactor was operated under a light intensity of 275 μM m-2.s-1 with a 16:8 h light-dark photoperiod. To evaluate the effect of RSA on biological-based problems, the experiment was conducted in three phases. The benefits of utilizing RSA were established through the following observations: effective removal of contaminants at an acceptable level without releasing the culture; extension of the biofilm formation time on the inner walls; inhibition of heterotrophic bacteria and nitrification; enhancement of the suspended solids retention capacity of the raceway tank (up to 770 mg.L-1); and improvement in ammonium removal rate to approximately 30 mg.L-1d-1. The ideal salinity level for both ammonium removal and biomass concentration in RSA should be below 0.02%. These findings demonstrate the potential of phycoremediation for sustainable wastewater treatment and contribute to environmental bioremediation strategies.

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来源期刊
International Journal of Phytoremediation
International Journal of Phytoremediation 环境科学-环境科学
CiteScore
7.60
自引率
5.40%
发文量
145
审稿时长
3.4 months
期刊介绍: The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.
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