试点规模的微藻种植和使用高率池的废水处理:一个元分析
Sharon B Velásquez-Orta1, Isaura Yáñez-Noguez2, Ignacio Monje Ramírez2
1School of Engineering, Merz Court, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK. sharon.velasquez-orta@newcastle.ac.uk.
概括
在废水中使用高率藻池 (HRAP) 的微藻种植有效地处理废水并产生生物质. 大规模生产力的关键因素包括太阳辐射和氨度,而不仅仅是保留时间.
科学领域:
- 环境生物技术 环境生物技术
- 微藻种植 微藻种植
- 废水处理 废水处理
背景情况:
- 在废水中培养微藻类的研究是为了同时处理和生产生物质.
- 有限的研究重点是室外,长期的微藻-细菌系统在真实的废水.
- 高速藻类池 (HRAP) 提供了可扩展的废水处理和资源回收的潜力.
研究的目的:
- 描述微藻培养步骤,以提高藻类池的可扩展性.
- 确定影响户外长期HRAP种植生物质生产率的关键参数.
- 对环境和运营生产力驱动因素分析试点规模的HRAP数据.
主要方法:
- 对试点规模HRAP研究的文献综述.
- 多变量分析以确定关键的生产率参数.
- 废水处理效率分析 (NH4+,COD,PO43-去除).
主要成果:
- HRAP有效地去除了90%的NH4+,70%的COD和50%的PO43-.
- 关键的操作参数:辐射量 (210 W m-2),温度 (18°C),pH (8.2),HRT (7.7 天).
- 大规模生产力是由太阳辐射和NH4+度驱动的;增长率为~0.54天-1 (实验室尺度的一半).
结论:
- 选择位置和足够的NH4+度 (≥70毫克L-1) 对于微藻的生产力至关重要.
- 高营养废水增加了生物质产量,但不一定提高了生产力.
- 试点规模的增长率表明,在扩大微藻种植以实现循环生物经济方面存在瓶.
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