在废水处理中,注射细菌-藻类比重过度估计的作用
Huangbo Zhao1, Xin Zhong1, Zexin Yao1
1College of Urban Construction, Wuhan University of Science and Technology, Wuhan, China.
概括
废水处理中的初始细菌与微藻比对由于自我适应而对营养物质的去除产生最小的影响. 微藻和细菌自然会形成稳定的共生社区,这表明了这种比率.
科学领域:
- 环境微生物学环境微生物学
- 废水处理技术 废水处理技术
- 减少二氧化碳排放的战略
背景情况:
- 微藻-细菌系统提供了一种可持续的二氧化碳 (CO2) 减排方法.
- 优化这些共生系统对于高效的废水处理至关重要.
研究的目的:
- 研究细菌和微藻初始接种比对系统性能的影响.
- 了解微藻-细菌联盟中的自我适应机制.
主要方法:
- 用各种细菌进行实验:藻类接种比率 (1:2, 1:1, 1:0.5, 1:0.25, 1:0.125, w/w).
- 营养物质去除效率分析.
- 主要组件分析 (PCA) 用于评估系统性能.
- 污泥体积指数 (SVI) 和酸盐积累的监测.
主要成果:
- 在不同的初始注射比率 (p > 0.05) 中观察到可比的营养去除效率.
- 随着时间的推移,细菌-藻类比率汇聚到稳定的状态 (3:1和4:1),表明自我适应.
- PCA对反应堆的性能进行了分组,证实了营养物质的去除和光合作用性能的趋同.
- 污泥体积指数和化物积累有所不同,极端比例 (1:2和1:0.125) 显示了较高的化物积累.
结论:
- 细菌和微藻的初始注射比率对于光生物反应器的性能来说不像以前所认为的那么重要.
- 微藻和细菌表现出自我组装的能力,形成稳定的利基,推动系统性能.
- 由于固有的系统自我调节,废水处理效率在一系列初始注射比率中强大.
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