Collimated beam (UV test) apparatus

紫外线（UV）消毒是目前公认的饮用水和废水消毒技术。在进行紫外线消毒的实验室研究时，需要使用已知发射光谱和强度的经校准的紫外线灯。所要求的准直光束装置就是这样的设备，设计用于将水样批量暴露在紫外线下。准直光束装置的紫外灯输出一般是均匀分布的；因此，有可能确定水中给定微生物的紫外线剂量反应。所要求的设备是必不可少的申请人的研究计划和高素质的人才在湖首大学的培训。该设备将用于：1)研究选定的水生微生物在冷冻后对紫外线辐射的反应；2)研究既耐紫外线又能在低温条件下存活的微生物的最佳紫外线和化学联合消毒方法；3)检测选定微生物在低温条件下的紫外线灭活效率。该研究预计将对在寒冷气候下运行的水和废水处理厂的紫外线消毒过程的正确运行产生重大影响，为开发新的紫外线系统提供信息，并更好地了解低温对消毒过程的影响。如果延迟购买所要求的设备，申请人的研究范围和生产力都将大大减少，湖首大学的学生将失去接受这种先进治疗技术培训的机会。

Ultraviolet light (UV) disinfection is now an accepted technology for disinfection of drinking water and wastewater. To carry out laboratory research in UV disinfection, one needs to use calibrated UV lamps with known emission spectrum and intensity. The requested collimated beam apparatus is such equipment that is designed to expose water samples to UV light on a batch basis. The output from the UV lamp of the collimated beam device is generally uniformly distributed; therefore, it is possible to determine the UV dose response of a given microorganism in water.The requested equipment is essential for the applicants' research programs and training of highly qualified personnel at Lakehead University. The equipment will be used to: 1) investigate the response of the selected waterborne microorganisms to UV radiation after freezing, 2) study the optimum combined UV and chemical disinfection of microorganisms that are not only UV resistant but also can survive under cold temperature conditions, and 3) examine UV inactivation efficiency of selected microorganisms under cold temperature conditions.  The research is expected to have significant impacts on the proper operation of UV disinfection processes for water and wastewater treatment plants operating in cold climate, provide information for developing new UV systems, and better understanding of the impact of cold temperature on disinfection processes.There would be a significant reduction in both scope and the productivity of the applicants' research if the acquisition of the requested equipment is delayed and the students at Lakehead University will miss the opportunity of being trained in this advanced treatment technology.