摘要
本文根据测试和实验资料,探讨了桂林市岩溶地下水对酸碱的缓冲作用。认为:基岩裂隙水缓冲平衡系统对酸的缓冲作用小,岩溶水和混合水(孔隙水和岩溶水混合)缓冲作用较大,孔隙水介于前二者之间;无论是哪类地下水缓冲平衡系统对碱的缓冲作用都较弱。指出了地下水缓冲平衡系统对酸碱的缓冲作用与原水中游离CO_2有关并起决定作用。还对桂林地下水酸、碱容量和污染进行定量和半定量环境质量评价。
Depended on the test and experiment information, the buffering process of karst underground water to acid and alkali is discussed in this paper. It is believed that the buffering process of buffering equilibrium system of bedrock fissure water to acid is small;the buffering process of karst water and mixed water (mixture of pore water and karst water)to acid is great;the buffering process of pore water to acid is situated between above two kinds of water; the buffering process of buffering equilibrium system to alkali is weak no matter which ground water is. It is. pointed out that the buffering process of buffering equilibrium systems of underground water to acid and alkali is closely related to and is determined by free carbon dioxide in primary undergound water. The acid and alkali capacity and the pollution of underground water in Guilin city are evaluated in quantitive and semiquantitive environmental quality.
