氯胺消毒管网“三氮”与总氯变化的预测模型

• 作 者: 余健 王军 王宏涛 林浩添 董玉莲
• 机 构: 湖南大学土木工程学院,广州市自来水公司,
• 出 处: 安全与环境学报
• 发表日期: 2012年03期
• 关键词: 氯胺 环境工程学 管网 氯胺消毒 给水管网 模拟系统 硝化模型 亚硝酸盐氮 氯胺衰减模型 硝酸盐氮

为探讨氯胺消毒供水管网的水质问题,建立了一种试验规模的氯胺消毒供水管网水质模拟系统。基于质量守恒原理和双Monod方程建立了该系统的硝化与氯胺衰减动力学耦合模型,并通过试验对该模型进行了验证。模型中的部分参数采用非线性多项式回归方法进行估计。应用该模型确定了活性氨氧化菌(AOB)和亚硝酸盐氧化菌(NOB)的数量。该模型对管网模拟系统内氨氮、硝酸盐氮与总氯的预测值与实测值基本一致,但对亚硝酸盐氮的预测值与实测值存在较大偏差。

In order to explore the water quality of chloramine disinfection water supply network, a water quality simulation system of chloramine disinfection water supply network was established. Based on the principle of mass conservation and the dual Monod equation, a coupled model of nitrification and chloramine decay kinetics was established. The model was verified by experiments. Some parameters in the model were estimated by nonlinear polynomial regression. The model was used to determine the quantities of AOB and NOB. The prediction model of ammonia nitrogen, nitrate nitrogen and total chlorine in the simulation system of the network is basically consistent with the measured values, but there is a big deviation between the predicted value of nitrite nitrogen and the measured value.