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以紫外线-双氧水(UV-H2O2)为研究对象,研究了UV-H2O2消毒对水中余氯含量衰减的影响,并考察了UV辐照度、H2O2含量以及初始氯含量、TOC、pH和温度等对余氯含量衰减的影响。结果表明,UV辐照时间和辐照度、H2O2含量的增加会加速余氯含量的衰减;初始氯含量越小,余氯含量的衰减速率越快;余氯含量的衰减属于酸催化反应,pH的降低会促进余氯衰减;温度的升高以及水中有机物含量的增加也会加速余氯含量的衰减。
The effect of UV-H2O2 disinfection on the decay of residual chlorine in water was studied by UV-H2O2. The effects of UV irradiation, H2O2 content, initial chlorine content, TOC, pH and temperature Effect of residual chlorine content decay. The results showed that the increase of H2O2 accelerated the decay of residual chlorine under UV irradiation time and irradiance. The smaller the initial chlorine content, the faster the decay rate of residual chlorine content. The decay of residual chlorine belongs to acid-catalyzed reaction. The pH Reduction will promote the decay of residual chlorine; the increase of temperature and the increase of organic matter in the water will also accelerate the decay of residual chlorine content.