【摘要】 通过考察臭氧投加对不同来源村镇供水工程水源水中AOC和TOC的影响,以及实际工程管网中AOC的变化情况,研究臭氧消毒对村镇饮用水生物稳定性的影响。结果发现TOC较大(2.06mg/L)的地表水源水,AOC随着臭氧投加量的增大而升高,水的生物稳定性减弱;TOC较小(0.48mg/L)的地下水源水则相反,AOC下降,生物稳定性增强;臭氧投加浓度较低时,地下水和地表水的TOC均增大,臭氧投加浓度较高时,TOC随臭氧浓度的升高呈下降趋势。村镇饮水工程臭氧消毒后,管网中AOC出现显著波动。该研究表明,臭氧消毒适用于TOC较低的水源水,对于水源水中TOC较大的村镇供水工程,需合理控制臭氧投加量以保障饮用水生物稳定性。更多还原

【Abstract】 This study aims to research on the effects of ozone disinfection on bio-stability of rural drinking water by detecting the effects of ozone disinfection on AOC and TOC of different water sources of rural water supply project and the changes of actual project in the pipe network.The results indicated that AOC increased with the increasment of ozone doses,and the bio-stability reduced in the surface water with the higher TOC(2.06 mg/L),however,the AOC reduced and bio-stability increased in underground water with the lower TOC(0.48mg/L).In addition,when the supplication concentration of ozone is low,the TOC of the surface water and underground water are increased,and when the supplication concentration of ozone is high,the TOC tended to decline with the increasment of ozone concentration.Specially,the AOC significantly changed in water pipe after ozone disinfection of rural drinking water supply.Finally,this study showed that ozone disinfection is suitable for the low TOC of source water,and in order to guaranteeing the bio-stability of drinking water supply,ozone doses should be reasonable controlled for the higher TOC of source water.更多还原