Combined advanced photochemical technologies and biological processes for the treatment of multicomponent wastewater

结合先进的光化学技术和生物工艺来处理多组分废水

• 批准号: 217009-2012
• 负责人: Mehrvar, Mehrab
• 金额: $ 2.11万
• 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: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=523658
• 关键词: Combined; advanced; photochemical; technologies; biological

This proposal deals with modeling, optimization, and development of combined advanced oxidation technologies (AOTs) and biological processes for the treatment of multicomponent wastewaters such as municipal, slaughterhouse, petrochemical, and soluble polymeric wastewater. To date, there is a lack of information on the efficient treatment of actual wastewaters using cost effective integrated processes. Due to the limitations of individual chemical, physical or biological processes in their effectiveness or economical feasibility, almost none is sufficiently applicable on its own. Although the main advantages of AOTs are their destructive and nonselective nature as well as their high reaction rates, the treatment imposes high operating and capital costs. An alternative treatment is the biodegradability enhancement of wastewater by a photochemical pre-treatment. The development, optimization, engineering models, dynamics, synergetic effects, and eventually the design of combined processes for the treatment of actual wastewaters are the main objectives of this research proposal. In the first phase of this project, the hybrid and combined AOTs such as UV/ultrasound, UV/hydrogen peroxide, and UV/ultrasound/hydrogen peroxide are optimized in terms of economics, contact times, overall efficiency, synergetic effect, operating parameters, and the sequence of the processes. A pilot plant sonophotoreactor along with two other UV photoreactors, already designed and constructed, are used to examine these processes. In the next phase of this project, the optimized photochemical processes are integrated with the biological process using activated sludge as either pretreatment, post-treatment, or both. This research will provide information on how best to combine photochemical and biological processes for the treatment of an actual wastewater. To optimize these processes, the total cost, degradation rates, residence time in each reactor, overall efficiency, synergetic effects, and the concentrations of the parent and intermediate by-products are analyzed. Finally, to minimize the retention time and the total cost of combined processes, an optimization algorithm is developed and validated using experimental data.

该提案涉及高级氧化技术 (AOT) 和生物工艺相结合的建模、优化和开发，用于处理多组分废水，例如市政废水、屠宰场废水、石化废水和可溶性聚合物废水。迄今为止，缺乏有关使用具有成本效益的集成工艺有效处理实际废水的信息。由于各个化学、物理或生物过程在有效性或经济可行性方面的局限性，几乎没有一个过程本身就足够适用。尽管 AOT 的主要优点是其破坏性和非选择性以及高反应速率，但该处理会带来较高的运营和资本成本。另一种处理方法是通过光化学预处理来增强废水的可生物降解性。开发、优化、工程模型、动力学、协同效应以及最终设计用于处理实际废水的组合工艺是本研究计划的主要目标。在该项目的第一阶段，混合和组合AOT，如紫外线/超声波、紫外线/过氧化氢、紫外线/超声波/过氧化氢，在经济性、接触时间、整体效率、协同效应、操作参数等方面进行了优化，以及过程的顺序。已经设计和建造的中试工厂声光反应器以及另外两个紫外光反应器用于检查这些过程。在该项目的下一阶段，优化的光化学过程与生物过程相结合，使用活性污泥作为预处理、后处理或​​两者。这项研究将提供有关如何最好地结合光化学和生物过程来处理实际废水的信息。为了优化这些过程，分析了总成本、降解率、每个反应器中的停留时间、总体效率、协同效应以及母体和中间副产物的浓度。最后，为了最大限度地减少组合过程的保留时间和总成本，开发了一种优化算法并使用实验数据进行验证。