School of Life Science, Shanxi University, Taiyuan, 030006, China.
School of Life Science, Shanxi University, Taiyuan, 030006, China.
J Environ Manage. 2023 Nov 1;345:118547. doi: 10.1016/j.jenvman.2023.118547. Epub 2023 Jul 9.
Indigenous bacteria popularly exist in real wastewater. Therefore, the potential interaction between bacteria and microalgae is inevitable in microalgae-based wastewater treatment systems. It is likely to affect the performance of systems. Accordingly, the characteristics of indigenous bacteria is worth serious concerning. Here we investigated the response of indigenous bacterial communities to variant inoculum concentrations of Chlorococcum sp. GD in municipal wastewater treatment systems. The removal efficiency of COD, ammonium and total phosphorus were 92.50%-95.55%, 98.00%-98.69%, and 67.80%-84.72%, respectively. The bacterial community responded differently to different microalgal inoculum concentrations, which was mainly affected by microalgal number, ammonium and nitrate. Besides, there were differential co-occurrence patterns and carbon and nitrogen metabolic function of indigenous bacterial communities. All these results indicated that bacterial communities responded significantly to environmental changes caused by the change of microalgal inoculum concentrations. The response of bacterial communities to different microalgal inoculum concentrations was beneficial for forming a stable symbiotic community of both microalgae and bacteria to remove pollutants in wastewater.
土著细菌普遍存在于实际废水中。因此，在基于微藻的废水处理系统中，细菌和微藻之间的潜在相互作用是不可避免的。这可能会影响系统的性能。因此，有必要认真关注土著细菌的特征。在这里，我们研究了土著细菌群落对城市废水中不同浓度的小球藻 GD 接种的响应。COD、氨氮和总磷的去除效率分别为 92.50%-95.55%、98.00%-98.69%和 67.80%-84.72%。细菌群落对不同的微藻接种浓度有不同的反应，主要受微藻数量、氨氮和硝酸盐的影响。此外，土著细菌群落的共现模式和碳氮代谢功能也存在差异。所有这些结果表明，细菌群落对微藻接种浓度变化引起的环境变化有明显的反应。细菌群落对不同微藻接种浓度的响应有利于形成一个稳定的微藻和细菌共生群落，以去除废水中的污染物。
