摘要：The discharge of acidic wastewater impacts the acidity of the receiving water. The interplay process can directly determine the level of water pollution and the living environment of aquatic organisms. However, in contrast to the weighted combination model commonly applied for the concentration of other pollution factors, consistency diffusion and ion balance are also combined determinants for changes in mixed water acidity. This leads to complexity in accurately calculating the pH. This paper analyses the process of ion balance. Considering the influence of carbonic acid on the pH, the authors constructed a two-dimensional turbulent mathematical model based on the pH of discharged acidic wastewater. The research was carried out through experiments on mixing acidic wastewater and standing water, discharging the water pool through an open channel to examine the simplified calculation method and developing calculation model for the pH. The results show that in the complete mixing experiment, which considers the influence of carbonic acid balance, the estimated result is consistent with the actual measured result with a maximized relative error of 2.9%. In the still water pool experiment, the authors supposed that the pH model of acidic wastewater discharge is influenced by dispersion effects, and diffusion and ion balance can relatively accurately simulate changes in the receiving water pH. The consequence is that the simulated value is in accordance with the actual measured value.
关键词：Acidic wastewater;Carbonic acid balance;Turbulent model;Water pool experiment
