使用微藻从化池废水中去除和回收营养:关键因素和实际影响
Kanchan J Nakarmi1, Ehsan Daneshvar1, Mika Mänttäri2
1Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130, Mikkeli, Finland.
Journal of environmental management
|September 9, 2023
概括
微藻有效地处理化池废水,去除氨和,同时产生有价值的生物质. 这项研究证明了微藻.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 废水处理 废水处理
背景情况:
- 化池废水 (STWW) 由于 (NH4+) 和总 (TP) 度高,使得分散地区的营养物质清除面临挑战.
- 微藻为STWW处理提供了可持续的解决方案,使营养物质能够恢复到有价值的生物质中.
- 微藻用于STWW处理的应用尚未得到充分研究,需要进一步调查.
研究的目的:
- 通过使用基板尺度光生物反应器 (PBRs) 调查微藻在治疗STWW中的有效性.
- 评估影响微藻生长和 STWW 中营养去除效率的因素.
- 评估生物质产量,营养物质去除动力学和从STWW中恢复营养物质.
主要方法:
- 用于在原始STWW中培养微藻的使用的板式泡柱光生物反应器 (PBRs).
- 研究悬浮固体对微藻生长和营养物质去除的影响.
- 进行了25天的升级光自营养培养,以确定生物质产量和去除效率.
主要成果:
- 在原始STWW中培养微藻可以实现高的去除效率:NH4+-N的79.14%和TP的41.11%在14天内.
- 升级式培养产生了0.75g/L干生物质,增强了营养物质的去除:NH4+-N的96.16%和TP的69.57%.
- 在生物质中回收了大量的 (62.99 ± 1.46 mg/L) 和 (11.41 ± 1.42 mg/L),每升经过处理的STWW有1.02g_eq的生物固定CO2.
结论:
- 微藻具有显著的潜力,可以有效地从污水池的废水中去除营养物质和恢复.
- 在PBR中进行光自培养是治疗STWW和生产微藻生物质的可行方法.
- 这种方法为废水管理和资源回收提供了可持续的途径.
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