通过使用改性聚乙烯醇/藻酸盐 (PVA/SA) 固定化的有氧脱细菌提高去除性能
1Beijing Key Laboratory of Bioprocess, and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
Chemosphere
|April 14, 2024
概括
一种由改性聚乙醇 (PVA) 和氨酸盐 (SA) 凝制成的新型微生物载体显著提高了废水中去除的有氧脱. 这种不动化的细菌实现了99.06%的酸盐去除,提高了效率和稳定性.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 材料科学 材料科学 材料科学
背景情况:
- 有氧脱是一种关键的废水处理工艺,用于去除.
- 挑战包括低效率,细菌损失和直接应用中的不良稳定性.
- 需要改进的方法来加强废水中的去除.
研究的目的:
- 开发一种新的微生物颗粒载体,用于增强有氧脱.
- 为了使细菌 *Stutzerimonas stutzeri* W-2 固定在载体上,以改善的去除.
- 在效率,稳定性和可重复使用性方面评估载体的性能.
主要方法:
- 制造一个NaHCO3修饰的聚乙醇 (PVA) /酸 (SA) 凝载体.
- 修改包括优化NaHCO3,PVA和SA度.
- 在 NaHCO3-PVA/SA 载体上将 *Stutzerimonas stutzeri* W-2 固定.
- 在多个循环中测试 (NO3-N和TN) 清除效率和稳定性.
主要成果:
- NaHCO3-PVA/SA载体显示孔径增加和质量转移效率提高.
- 动不动的细菌 (NaHCO3-PVA/SA@W-2) 实现了99.06%的NO3--N去除,改善了21.39%.
- 降解效率比非固定化的细菌高43.70%.
- 在五次重复使用后,保持了高的去除率 (99% NO3 - - N,93.01% TN).
结论:
- 经NaHCO3修改的PVA/SA凝载体有效地使有氧无化细菌停滞不前.
- 这种固定化策略显著提高了除效率和运行稳定性.
- 开发的载体具有强大的工业应用潜力,可用于大规模的废水处理.
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