摘要
由于上海第四系承压含水层及岩溶裂隙含水层管井灌水后,常表现出井水周围含氧量的增高,从而有利于该水中NH~+_4、NO~-_2的氧化,促成了硝化过程的进行和NO~-_3的积累。本文参照了河流地表水的数学模型,研究了该硝化过程的数学模型,並据环境地质条件及化学的、物理的特征,确定了参数。从几组实际数据的计算与拟合图来看,其结果是满意的。该模型具有一定的可靠性,对探索地下水中氮的污染研究有一定作用。
When the well dug deep into the confined aquifer of-the Quarternary System and the crcvice-aquifer of basement in Shanghai area is regarded, the oxygen content is often incre- ased around the well. It is advantageous to the oxidation of NH_4~+, NO_2~-ions in the water and stimulate the nitrated-procedure and the accumulation of NO_3~-ions in the water. A mathematical model for the nitrated-procedure is established and parameters are determined according to the conditions of environmental geology and the chemical and physical characteristics. The result is satisfactory from the calculation of actual data and fitting-figures. The model has a fair reliability and is effective for the study.of the nitrogen pollution in ground water.
关键词
地下水
氮污染
硝化过程
上海
ground water, nitrogen pollution, nitrated-procedure
