Treatment of industrial wastewater

工业废水处理

• 批准号: 1800-2011
• 负责人: Biswas, Nihar
• 金额: $ 3.28万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=636604
• 关键词: Treatment; industrial; wastewater

Industry is essential to Canada's economic growth. These industries include: petroleum refineries; pulp and paper mills; pharmaceutical producers; cosmetic, dye and resin manufacturing plants, etc. These are all very important industries for Canada's economy. However, many produce liquid wastes that contain toxic contaminants that are also listed as priority pollutants. Many of these pollutants include: phenols, benzene, toluene, and other aromatic compounds. At high concentrations these chemicals can be harmful to various ecosystems, thus polluted waste water must be treated before discharging into the environment. Engineers have devised many techniques, such as: adsorption, chemical precipitation, biological treatment, etc. for removing such compounds, but most of these techniques have limited efficiency and/or are costly. The applicant and his research group have developed a technology for removing compounds such as: phenolics and other aromatic compounds including Bisphenol A (BPA)) from waste water in the laboratory by using enzymes which catalyze these toxic compounds, under certain conditions, and polymerize (produces solids of various sizes) them. These solids can then be removed using a coagulation-flocculation process. This method is a simpler, more environmentally friendly alternative to current conventional processes. However, other aromatics such as benzene, toluene, etc., do not respond to the enzymatic treatment in its parent state. So, attempts are being made to transform them to phenolics (through Fenton reaction) before subjecting them to the enzymatic treatment. Costs for enzymatic treatment are influenced heavily by the cost of the enzymes. Fortunately, soyabean peroxidase (SBP), a by-product and an extremely cost-effective enzyme, has shown tremendous potential. The proposed technology will be extended to treat real wastewater from refineries. Therefore, it has the potential to be successful in removing these toxic compounds and to be commercialized thereby benefiting Canada's industries and environment.

工业对于加拿大的经济增长至关重要。这些行业包括：石油炼油厂；纸浆和造纸厂；制药生产商；化妆品，染料和树脂制造厂等。这些都是加拿大经济的非常重要的行业。但是，许多产生含有有毒污染物的液体废物，这些废物也被列为优先污染物。这些污染物中的许多包括：苯酚，苯，甲苯和其他芳香族化合物。在高浓度下，这些化学物质可能对各种生态系统有害，因此必须在排放到环境之前对污染的废水进行处理。工程师已经设计了许多技术，例如：用于去除此类化合物的吸附，化学沉淀，生物处理等，但是这些技术中的大多数技术的效率有限，并且/或成本高昂。申请人及其研究小组开发了一种用于去除诸如：酚类和其他芳香族化合物的技术，包括通过使用这些有毒化合物在某些条件下催化这些有毒化合物的酶，以及在某些条件下催化这些有毒化合物的酚类A（BPA）（BPA），并在各种尺寸的各种情况下（产生各种尺寸）。然后，可以使用凝血量算过程去除这些固体。该方法是当前常规过程的更简单，更环保的替代品。但是，其他芳香剂（例如苯，甲苯等）都不应对其母体的酶促处理。因此，正在尝试将它们转化为酚类（通过芬顿反应），然后再对其进行酶促处理。酶促处理的成本受酶成本的很大影响。幸运的是，副产品和极其成本效益的酶的大豆过氧化物酶（SBP）显示出巨大的潜力。拟议的技术将扩展以处理炼油厂的真实废水。因此，它有可能成功地去除这些有毒化合物并进行商业化，从而使加拿大的行业和环境受益。