当用作需求指标时,素的杀菌作用
Josefine Molina-Pinna1, Félix R Román-Velázquez1
1Department of Chemistry, University of Puerto Rico, Mayagüez Campus, Mayagüez, PR 00681, USA.
Polymers
|May 14, 2025
概括
奇托通过减少需求和改善细菌去除,提高了水的消毒效果. 这种生物聚合物在降低水处理过程中消毒副产品的形成方面表现有前途.
科学领域:
- 环境科学 环境科学
- 水处理技术水处理技术
- 生物聚合物的应用
背景情况:
- 使用低酸 (SH) 进行表面水消毒可能会导致受管制消毒副产品 (DBP) 由于与性物质的反应而形成.
- 波多黎各的米拉德罗水处理厂 (MWTP) 面临SH消毒效率和DBP控制方面的挑战.
研究的目的:
- 评估基托桑作为减少需求和增强消毒的潜在剂物的有效性.
- 评估基托桑对细菌去除的影响及其减轻DBP形成的潜力.
主要方法:
- 奇托 (75%脱乙,460kDa) 在四种酸 (酸,酸,盐酸,L-酸) 中溶解.
- 实验使用两种度水平 (236.0 NTU和2556 NTU) 的水样进行.
- 生成了需求曲线,并进行了大肠杆菌存在缺失测试.
主要成果:
- 与对照组相比,用桑处理的水样在断点实现了消毒,使用较低的SH剂量.
- 在236.0NTU时,所有酸溶液都达到3.60 mg/L的断点.
- 在2556NTU时,盐酸-奇托桑仅需要3.60 mg/LSH进行消毒,而其他溶液需要4.20 mg/L.
结论:
- 素显著增强了细菌的去除,并减少了水处理中的需求.
- 素的使用可能会导致消毒副产品的形成降低.
- 酸盐为改善水处理厂的消毒过程提供了可行的替代品或补充剂.
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