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Integrated Water Quality Modeling of a Wastewater Repurification Process 污水再气化过程的综合水质建模
发布日期: 2008-11-01
对吉布森岛1320万加仑/天(MGD)的水质进行了建模 澳大利亚布里斯班的高级水处理厂(AWTP)。AWTP包括高费率 澄清、微滤、反渗透和高级氧化。该模型包含了不同的功能 进水水质、多个化学注入点和多单元工艺。主要 目标是: 了解碱度和磷水平如何影响净化水的稳定性; 记录化学系统的计算结果; 由于化学注入,将成分添加到水流中; 记录假定的运行控制原理;和 优化化学品成本、工艺性能和剩余产量。 AWTP工艺包括以下单元工艺: 氯胺化和pH调节(硫酸或苛性钠); 三氯化铁和聚合物混凝,高效澄清; 微滤; pH值调节; 二级反渗透处理; 过氧化氢/高级氧化紫外光反应器;和 储存或排放前,用石灰和二氧化碳进行化学调节。 AWTP工艺分为增量系统,每个化学注入点和 治疗过程单独处理。项目特定的电子表格模型和 使用了商用的、基于电子表格的水质模型。模型运行 因此,一个系统的出水水质就成了下一个系统的进水水质。对于每个处理策略,对多个进水水质场景进行建模,以确定 化学加药要求和由此产生的处理水质量。 包括表格、数字。
Water quality modeling was performed for the 13.2 million gallon per day (MGD) Gibson Island Advanced Water Treatment Plant (AWTP) in Brisbane, Australia. The AWTP includes high-rate clarification, microfiltration, reverse osmosis and advanced oxidation. The model incorporated differing influent water quality, multiple chemical injection points and multiple unit processes. The main objectives were to: understand how alkalinity and phosphorus levels would affect treated water stabilization; document the chemical system calculations; incorporate the addition of constituents into the water stream because of chemical injection; document the assumed operational control philosophy; and, optimize chemical costs, process performance and residual production. The AWTP Process included the following unit processes: chloramination and pH adjustment (sulfuric acid or caustic soda); coagulation with ferric chloride and polymer and high-rate clarification; microfiltration; pH adjustment; two-pass reverse-osmosis treatment; hydrogen peroxide/advanced oxidation ultraviolet light reactors; and, chemical conditioning with lime and carbon dioxide prior to storage or discharge. The AWTP processes were split into incremental systems, and each chemical injection point and treatment process was treated individually. A combination of project-specific spreadsheet models and a commercially-available, spreadsheet-based water quality model was used. Models were run sequentially, so one system's effluent water quality became the next system's influent water quality. For each treatment strategy, multiple influent water quality scenarios were modeled to determine the chemical dosing requirements and resulting treated water quality. Includes tables, figures.
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发布单位或类别: 美国-美国给水工程协会
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