Evaluation of an AOS reactor treatment train for stormwater effluents

AOS 反应堆雨水处理系统的评估

• 批准号: 523101-2018
• 负责人: McPhedran, Kerry
• 金额: $ 0.91万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Engage Plus Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=659418
• 关键词: Evaluation; AOS; reactor; treatment; train

Municipal, commercial, industrial, and agricultural processes create large volumes of wastewaters**contaminated by bacteria, viruses, and organic/inorganic compounds. Of current interest for Canadian**municipalities is the need for treatment of municipal stormwater which is a type of wastewater given it has**similar characteristics to municipal sewage. Wastewaters can be treated using technologies including biological**aerobic and anaerobic treatment, chemical coagulation, membranes, photocatalysis, adsorption, advance**oxidation processes, and ozonation. Recently, electrochemical treatment has become of interest given its ability**to provide simultaneous disinfection and oxidation/reduction of chemical compounds. Advantages of**electrochemical treatment include the ability to treat wastewaters at ambient temperature and pressure, limited**production of solid waste products, and limited addition of process chemicals. Disadvantages include limited**treatment rates due to reactions being restricted to the electrode surfaces and to high amounts of suspended**solids, potential for high energy consumption, and creation of chemical byproducts that may be more toxic than**the original compounds. The use of electrochemical treatment as part of a treatment process train may be**considered to overcome the limited treatment rates due to high suspended solids concentrations. For instance,**the use of coagulation/flocculation pretreatment could remove solids prior to an electrochemical treatment**process. BioLargo Water has been developing a novel electrochemical technology for wastewater treatment**termed the Advanced Oxidation System (AOS) targeting wastewaters that will address both disinfection and**decontamination. Thus far, the AOS has shown excellent disinfection performance for waters including**agricultural waters, poultry wastewaters and well waters. However, the performance of the AOS process has**been less successful for wastewaters with high total suspended solids (TSS) that foul the reactor over time.**Thus, the goal of this project is to assess the AOS system as part of a treatment process train including a**pretreatment process meant to reduce TSS levels.

市政、商业、工业和农业生产过程产生大量被细菌、病毒和有机/无机化合物污染的废水。加拿大 ** 市政府目前感兴趣的是需要处理城市雨水，这是一种废水，因为它具有与城市污水相似的特性。污水处理技术包括生物需氧和厌氧处理、化学凝聚、膜、生物吸附、高级氧化工艺和臭氧化。最近，电化学处理由于其同时提供消毒和化合物的氧化/还原的能力而变得令人感兴趣。电化学处理的优点包括在环境温度和压力下处理废水的能力，有限的固体废物产品的产生，以及有限的工艺化学品的添加。缺点包括由于反应被限制在电极表面和大量的悬浮固体而导致的有限的处理速率，高能量消耗的可能性，以及可能比原始化合物毒性更大的化学副产物的产生。可以考虑将电化学处理作为处理工艺系列的一部分，以克服由于高悬浮固体浓度而导致的有限处理速率。例如，** 使用凝聚/絮凝预处理可以在电化学处理 ** 过程之前去除固体。BioLargo Water一直在开发一种用于废水处理的新型电化学技术 **，称为高级氧化系统（AOS），该系统针对废水，可同时解决消毒和 ** 去污问题。到目前为止，AOS对沃茨，包括农业沃茨、家禽废水沃茨和井水沃茨，显示出优异的消毒性能。然而，AOS工艺的性能 ** 对于具有高总悬浮固体（TSS）的废水不太成功，这些废水随着时间的推移会污染反应器。因此，本项目的目标是评估AOS系统作为处理工艺系列的一部分，包括旨在降低TSS水平的 ** 预处理工艺。