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The UV Intensity Setpoint Approach Re-defined: Using Validated Calculated Dose Algorithms to Develop Online Dose Monitoring Strategies That Do Not Require UVT Input 重新定义紫外线强度设定点方法:使用经过验证的计算剂量算法 开发不需要紫外线输入的在线剂量监测策略
发布日期: 2009-11-01
在紫外线(UV)反应堆验证过程中,剂量传递被定义为还原当量剂量(红色) 通常在流量、紫外线透射率(UVT)、灯输出和温度的不同操作条件下进行量化 有些情况下,灯的状态。经验模型(计算剂量算法)随后从 验证数据将测量的红色表示为不同操作条件的函数 参数。在安装时,这些算法用于计算给定操作条件下的红色 每个参数的条件。另一种剂量监测策略称为紫外线 强度设定点方法,可通过将紫外线反应器的红色量化为 流量和灯输出。设定值(DVGW)根据德国指南的紫外线强度 当反应器在固定流量和灯输出下运行时,在两个测试点确认红色 (设定值紫外线强度);一个在高紫外线下,但随着灯功率降低,直到紫外线强度 与设定点匹配,另一个在最大功率下,但UVT降低,直到UV 强度与设定点匹配。在现场,如果 测得的流量不超过验证流量,且测得的紫外线强度匹配或 超过设定值紫外线强度。本文介绍了一种新的方法,即 计算剂量法用于定义在线剂量监测策略,如紫外线 强度设定点接近,不需要UVT输入。包括数字。
During ultraviolet (UV) reactor validation, dose delivery, defined as Reduction Equivalent Dose (RED), is typically quantified across different operating conditions of flow rate, UV transmittance (UVT), lamp output and in some cases, lamp status. Empirical models (calculated dose algorithms) are then developed from the validation data to express the measured RED as a function of the different operating parameters. At installations, these algorithms are used to calculate the RED, given operating conditions of each parameter. An alternative dose-monitoring strategy, known as the UV intensity setpoint approach, can be defined by quantifying a UV reactor's RED as a function of flow and lamp output. Per the German UV guidelines (DVGW) intensity setpoint approach, the RED is confirmed at two test points with the reactor operating at a fixed flow and lamp output (setpoint UV intensity); one at high UVT but with lamp power reduced till the UV intensity matches the setpoint, and the other at maximum power but with UVT reduced until the UV intensity matches the setpoint. In the field, a UV reactor is credited with the validated RED if the measured flow does not exceed the validated flow and the measured UV intensity matches or exceeds the setpoint UV intensity. In this paper, a new method is described whereby the calculated dose approach was used to define an online dose-monitoring strategy that, like the UV intensity setpoint approach, does not require UVT input. Includes 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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