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: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=570080
• 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.

该提案涉及建模，优化和开发组合高级氧化技术（AOTs）和生物工艺处理多组分废水，如市政，屠宰场，石化和可溶性聚合物废水。到目前为止，缺乏关于使用具有成本效益的综合工艺有效处理实际废水的信息。由于单个化学、物理或生物过程在其有效性或经济可行性方面的局限性，几乎没有一种方法本身是充分适用的。虽然AOT的主要优点是它们的破坏性和非选择性以及它们的高反应速率，但该处理需要高的操作和资本成本。另一种处理方法是通过光化学预处理提高废水的生物降解能力。开发，优化，工程模型，动力学，协同效应，并最终设计的组合工艺处理实际废水的主要目标是这项研究的建议。在该项目的第一阶段，混合和组合的AOT，如UV/超声波，UV/过氧化氢，UV/超声波/过氧化氢的经济性，接触时间，整体效率，协同效应，操作参数和顺序的过程进行了优化。一个中试工厂sonophotoreactor沿着与其他两个紫外光反应器，已经设计和建造，被用来检查这些过程。在该项目的下一阶段，优化的光化学工艺与使用活性污泥作为预处理、后处理或两者的生物工艺相结合。这项研究将提供如何最好地结合联合收割机的光化学和生物处理的实际废水的信息。为了优化这些过程，总成本，降解速率，在每个反应器中的停留时间，整体效率，协同效应，以及母和中间副产物的浓度进行了分析。最后，以最小化保留时间和组合工艺的总成本为目标，提出了一种优化算法，并利用实验数据进行了验证。