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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。
The impact of ozone disinfection on the biological stability of drinking water in villages and towns was studied by examining the effects of ozone dosing on the AOC and TOC in the water and water sources of different sources of urban water supply projects and the changes of AOC in the actual pipeline network. The results showed that the surface water source water with a large TOC (2.06mg / L) was found. The AOC increased with the increase of the ozone dosage, and the biological stability of the water was weakened. The groundwater source water with a small TOC (0.48mg / L) On the contrary, the AOC decreased and the biological stability increased. The TOC of groundwater and surface water increased when ozone concentration was lower. When ozone concentration was higher, TOC decreased with the increase of ozone concentration. After the village drinking water ozone disinfection, AOC pipe network significant fluctuations. The study shows that ozone disinfection is suitable for the lower source water TOC, water source water TOC large rural water supply projects, the need to control the dosage of ozone to protect the biological stability of drinking water.