中央复合设计的应用用于商业洗衣废水处理,通过使用牺牲铁电极进行包装床电凝
Sushil Kumar1, Patrick Drogui1, R D Tyagi2
1Institut National de la Recherche Scientifique (INRS), Centre-Eau Terre Environnement (ETE), Université du Québec, 490 Rue de la Couronne, Québec, QC, G1K 9A9, Canada.
Chemosphere
|November 14, 2024
概括
这项研究引入了一种新的包装床电凝方法,使用铁电极和细胞外聚合物物质来处理商业洗衣废水,实现关键污染物的高去除率.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 电化学 电化学 电化学
背景情况:
- 商业洗衣废水 (LWW) 由于高化学氧气需求 (COD),总悬浮固体 (TSS) 和非乙氧酸盐 (NPEO) 存在重大处理挑战.
- 传统的处理方法可能不足以满足严格的排放或再利用标准.
- 工业废水管理需要可持续且具有成本效益的解决方案.
研究的目的:
- 开发和评估一种新的包装床电凝 (PBEC) 工艺,用于处理商业洗衣废水.
- 调查使用牺牲铁电极和细胞外聚合物物质 (EPS) 作为花剂的有效性.
- 评估废水再利用的经济可行性和潜力.
主要方法:
- 使用一个装满床的电凝系统与牺牲铁电极 (废铁片) 和石墨阳极.
- 采用不钢阴极和蛇形流动图案,以在动态批量模式中增加接触时间.
- 纳入细胞外聚合物物质 (EPS) 作为花剂,以帮助去除污染物.
主要成果:
- 实现了高的去除效率:98%的度,95%的总固体 (TS),89%的COD和53%的NPEO.
- 优化的治疗参数包括电流强度为2.99A,治疗时间为58.8分钟,EPS剂量为8.0 mg/L.
- 证明处理成本为1.20加拿大美元/立方米,能源消耗是主要的成本因素.
结论:
- 开发的PBEC工艺提供了一种可持续和有效的方法来处理商业洗衣废水.
- 处理方法符合北克的水再利用标准,这表明水回收的巨大潜力.
- 这种方法支持洗衣行业负责任的废水管理和资源回收.
相关概念视频
Coagulation
273
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
273
Electrodeposition
605
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Electrodeposition can...
605
Ion-Exchange Chromatography
376
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
376
Precipitation and Co-precipitation
1.7K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
1.7K


