论文部分内容阅读
目的评估臭氧处理循环冷却水技术在集中空调水处理系统中的应用效果和环境安全性。方法以上海市某医院采用臭氧技术的集中空调冷却塔作为试点,采用WS 394-2012《公共场所集中空调通风系统卫生规范》等标准规范中的方法,对该冷却塔的循环冷却水水质、除菌效果以及周围环境污染状况进行监测与分析。结果经臭氧技术处理后,该冷却塔水质符合国家标准;该冷却塔存在本底军团菌污染情况,应用臭氧技术处理后,冷却水中未检出嗜肺军团菌;细菌总数0~5 CFU/ml,大肠菌群未检出;冷却塔周边1 m处臭氧浓度平均为0.25 mg/m~3,5 m处接近环境本底浓度(0.02 mg/m~3)。结论臭氧循环冷却水技术应用于集中空调水处理系统,在水质控制和抑菌方面显示良好效果,正常运行情况下不会对周边环境的公共卫生安全造成威胁。
Objective To evaluate the application effect and environmental safety of ozone treatment circulating cooling water technology in centralized air conditioning water treatment system. Methods Using a centralized air-conditioner cooling tower with ozone technology in a hospital in Shanghai as a pilot, the water quality of the circulating cooling water of the cooling tower was determined by the method of WS 394-2012 “Hygienic Standard for Central Air Conditioning Ventilation System in Public Places” Bacterial effect and the surrounding pollution monitoring and analysis. Results After ozone treatment, the water quality of the cooling tower conformed to the national standard. There was the contamination of Legionella in the cooling tower. Legionella pneumophila bacteria were not detected in the cooling water after ozone treatment. The total number of bacteria was 0 ~ 5 CFU / ml , And no coliforms were detected. The ozone concentration at 1 m around the cooling tower averaged around 0.25 mg / m ~ 3,5 m at the ambient background concentration (0.02 mg / m ~ 3). Conclusions The ozone circulating cooling water technology is applied to the centralized air-conditioning water treatment system and shows good effects in water quality control and bacteriostasis. Under normal operation, it will not pose a threat to the public health and safety of the surrounding environment.