1.Advances on Biological Stability of Drinking Water
Journal of Environment and Health 1992;0(04):-
Recently,because of the increasing of nitrogen, phosphate and organic pollutants concentration in water, the population and constitution of microorganisms in water have been influenced. There was a new challenge for the traditional drinking water treatment technology. The studies on the drinking water biostability were summarized and the determination of biological stability of drinking water,the influencing factors on the biostability and the measurement controlling the biostability were introduced in the present paper.
2.Efficiency of Ozone in Inactivation of f_2 Phage in Water
Yunming MA ; Huaran WANG ; Fuyu WANG
Journal of Environment and Health 2007;0(12):-
Objective To observe the efficacy of ozone in the inactivation of f2 phage in water. Methods The concentration of ozone in water was measured by iodometry. During the experiment,the suspension of f2 phage was added in the ozonized water, at 5,15,30 min, the f2 phage inactivation rate was calculated. Results Under the same condition of ventilation,in the range of pH regulated in the drinking water sanitary standard,the effect of pH on the inactivation of f2 phage was not obvious, while the chromaticity of water could remarkably influence the inactivation of f2 phage. Conclusion The higher chromaticity of water can interfere the inactivation of f2 phage in water by ozone.
3. Study on the transfer mechanism and destructive law of the bacterial antibiotic resistance genes disinfected by chlorination
Zhongwei YANG ; Hanji JIANG ; Zhiqiang CHEN ; Dong YANG ; Zhigang QIU ; Lu LIU ; Jing YIN ; Huaran WANG ; Junwen LI ; Min JIN
Chinese Journal of Preventive Medicine 2018;52(9):892-897
Objective:
To study the response of Escherichia coli (