发光菌法测定医疗机构废水生物毒性

Determination of Biological Toxicity of Medical Institutions Waste Water by the Method of Luminescent Bacteria

利用费舍尔弧菌为菌种,结合粪大肠菌群的测定,对医疗机构排放的废水进行综合测试。监测结果均符合相应的标准限值要求,但具有一定的生物毒性,对发光菌具有一定的生物抑制率。传染病和结核病医疗机构的废水生物抑制率最高,达44.7%和49.8%;中医医疗机构废水的抑制率最低,为8.1%。实验结果表明,发光菌法可应用于医疗机构废水生物毒性的测定。

Vibrio Fischeri as spawn, a comprehensive test of the waste water discharged by medical institutions was carried out, combine with the determination of fecal coliform. Monitoring results of fecal flora of waste water conformed to the requirements of the corresponding standard limit, but medical waste water with biological toxicity generated certain biological inhibition rate to photogenic bacterium. The waste water of infectious diseases and tuberculosis medical institutions possessed biological inhibition rates as high as 44. 7% and 49. 8%. The inhibition rate of waste water from traditional Chinese medicine medical institutions caused a minmum inhibition rate of 8. 1%. The experimental results showed that the luminescent bacteria method could be applied to the determination of waste water of medical institutions.