聚烯复合材料系统:废水处理的替代方案
Niniedna Niedja Gomes Amaro1, Kepler Borges França2, Osmar Batista de Souza Neto2
1Department of Chemical Engineering, Federal University of Campina Grande, 882 Aprígio Veloso, Campina Grande, PB - 58429-900, Brazil
概括
聚烯过器有效地从废水中去除污染物和98.32%的大肠杆菌,满足灌标准. 虽然不能实现饮用性,但这为资源保护提供了有价值的水处理解决方案.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 材料科学 材料科学 材料科学
背景情况:
- 人口不断增长加剧了水资源短缺,需要先进的净水方法.
- 聚乙烯的多孔结构使其成为保留污染水中的杂质的有希望的材料.
- 传统的处理方法,如反透和膜过,至关重要,但可能是资源密集的.
研究的目的:
- 评估一个带有混合聚乙烯床的管状反应堆用于废水处理的有效性.
- 为了优化聚烯过器系统的性能,以消除污染物.
- 根据既定标准,评估处理过的水是否适合灌.
主要方法:
- 这是一项两阶段的研究,涉及系统优化和性能评估.
- 使用不同的聚乙烯颗粒大小,流速 (0.5-1L/分钟) 和停留时间 (180-360分钟) 的测试.
- 在死结模式和连续配置中运行,无需循环.
主要成果:
- 第一个阶段的优化实现了55%的大肠杆菌和度的去除,对于饮用水来说不够.
- 第二阶段证明了化学氧气需求 (78.26%),总 (75%) 和酸盐 (73.42%) 的高去除效率.
- 实现了98.32%的大肠杆菌失活,符合CONAMA第2类和第3类灌标准.
结论:
- 聚烯波器系统显示了废水处理的巨大潜力,特别是用于灌目的.
- 可能需要进一步优化以满足饮用水标准.
- 聚烯过为水资源管理和污染控制提供了一种具有成本效益的方法.
相关概念视频
01:20Types of Step-Growth Polymers: Polyesters
2.2K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.2K
01:22Waterproofing and Anti-Bacterial Admixtures in Concrete
75
Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...
Waterproofing admixtures render concrete hydrophobic,...
75
01:30Superplasticizers
81
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
81