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我国珠江下游水源水质普遍呈现低碱低硬的特点,水质化学稳定性较差,具有一定的腐蚀性.采用二氧化碳与石灰联用再矿化工艺,能使水体达到水质化学稳定.传统的混凝、沉淀、过滤、消毒等工艺都会降低水质化学稳定性,且以混凝和消毒为甚.将着重考察常规水处理工艺中絮凝剂、消毒剂对碱度、pH以及水质化学稳定性指标的影响,并简要介绍了一种将上述影响定量的理论计算方法.将理论分析与实验数据进行对比,结果表明:理论计算值与实验结果的误差不超过3%,可以用于指导二氧化碳与石灰联用再矿化工艺.
The water quality of the lower reaches of the Pearl River in our country generally shows the characteristics of low alkali and low hardness, poor chemical stability of water quality and certain corrosiveness.Using the remineralization process combined with carbon dioxide and lime, the water can reach chemical stability of water quality.Traditional coagulation , Sedimentation, filtration, disinfection and other processes will reduce the chemical stability of water quality, and coagulation and disinfection is even more. Will focus on conventional flocculants, disinfectants alkalinity, pH and water quality chemical stability indicators , And a theoretical calculation method to quantify the above effects is briefly introduced.Comparing the theoretical analysis with the experimental data, the results show that the error between theoretical calculation and experimental results does not exceed 3% and can be used to guide the combination of carbon dioxide and lime Remineralization process.