Actual wastewater treatment using integrated advanced oxidation technologies and biological processes

使用综合高级氧化技术和生物工艺进行实际废水处理

• 批准号: RGPIN-2019-06228
• 负责人: Mehrvar, Mehrab
• 金额: $ 2.4万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=747165
• 关键词: Actual; wastewater; treatment; using; integrated

The goal of my research is to develop a cost-effective integrated advanced oxidation technologies (AOTs) and biological processes for the treatment of actual complex wastewaters, focusing on winery wastewater (WWW) and confectionery wastewater (CWW). Wineries produce a large volume of WWWs. Currently; WWWs are directed to municipal wastewater treatment plants (WWTPs) for co-treatment, but they are not treated successfully within the WWTPs' biological systems due to the existence of non-biodegradable organics such as polyphenols and pesticides. Manufacturers of candy, chocolate and chewing gums produce large volumes of CWW with high chemical oxygen demand (COD) concentrations, in which many artificial sweeteners are non-biodegradable. The existence of these organics in WWW and CWW is a major health concern. To date, there is a lack of efficient treatment for these wastewaters, making this proposal unique in its kind. Due to the limitations of individual photochemical or biological processes in their effectiveness or economic feasibility, almost none is efficiently applicable on its own to treat such wastewaters. AOTs, generators of highly potent hydroxyl radicals, break down non-biodegradable, toxic, inhibitory and recalcitrant organics rapidly; however, they are not cost-effective on their own. In this research, WWW and CWWs will be pre-treated using appropriate AOTs to produce biodegradable/non-toxic components that are subsequently treated in an activated sludge bioreactor. The development, optimization, modeling and simulation, hydrodynamics, synergetic effects, economic analysis and the design of combined AOTs and bioprocesses for the treatment of these complex industrial wastewaters are main objectives of this research. Over the long-term, the results will lead to cost-effective applications of combined AOTs and biological processes so that the full-scale use of these high-efficient treatment technologies in industrial wastewater treatment plants is promoted for waste minimization and water reuse. In this research, kinetic models and degradation rates of actual wastewaters will be developed experimentally. A novel sonophotoreactor will be characterized and coupled with UV/H2O2 to be used for the wastewater pre-treatment. The optimized photochemical processes will be integrated with biological processes as either pretreatment, post-treatment or both. For the first time, a nonlinear controller will be also developed to control the H2O2 in the photoreactors so that its residuals are at a minimum level while the organic degradation is maximized. The nonlinear controller will be developed using measurable parameters such as pH. To optimize integrated processes, the total costs, degradation rates, residence time in each reactor, overall efficiency and synergetic effects are analyzed. These processes will be optimized by minimizing total treatment time, total costs, and sludge production while maximizing the overall degradation rates of pollutants.

我的研究的目的是开发一种具有成本效益的综合氧化技术（AOTS）和生物学过程，用于处理实际复杂的废水，重点是酿酒厂废水（www）和糖果废水（CWW）。酿酒厂生产大量wwws。现在; wwws针对市政废水处理厂（WWTPS）进行共同处理，但由于存在不可生物降解的有机物，例如多酚和农药，因此在WWTPS的生物系统中未能成功治疗它们。糖果，巧克力和口香糖的制造商生产大量的CWW，具有高化学氧（COD）浓度，其中许多人造甜味剂是不可生物降解的。这些有机物在www和cww中的存在是一个主要的健康问题。迄今为止，这些废水缺乏有效的治疗方法，这使得该提案与众不同。由于个人光化学或生物学过程在其有效性或经济可行性中的局限性，几乎没有一个单独适用于治疗此类废水。 AOTS，高度有效的羟基自由基的发电机，迅速分解了不可生物降解，有毒，抑制性和顽固有机物。但是，它们本身并不具有成本效益。在这项研究中，将使用适当的AOTS预先对WWW和CWW进行预处理，以产生可生物降解/无毒的成分，这些成分随后在活化的污泥生物反应器中进行处理。开发，优化，建模和仿真，流体动力学，协同效应，经济分析以及合并的AOTS和生物处理的设计，用于处理这些复杂的工业废水，是这项研究的主要目标。从长远来看，结果将导致合并的AOTS和生物学过程的成本效益应用，以便在工业废水处理厂中全面使用这些高效的处理技术，以促进废物最小化和水再利用。在这项研究中，将通过实验开发实际废物的动力学模型和降解速率。一种新型的超声反应器将被描述并与UV/H2O2结合，用于废水预处理。优化的光化学过程将与生物学过程集成为预处理，处理后或两者兼而有之。还将首次开发非线性控制器来控制光电反应器中的H2O2，以使其残差处于最小水平，而有机降解则最大化。非线性控制器将使用可测量的参数（例如pH）开发。为了优化综合过程，分析了总成本，降解率，每个反应器中的停留时间，总体效率和协同效应。这些过程将通过最小化总治疗时间，总成本和污泥生产来优化这些过程，同时最大化污染物的总体降解率。