| Combined with the hydrological geology condition of fly ash dumping site, through stable isotope tracer, soaking and leaching experiment, the influence of fly ash dumping site on karst groundwater around the ash field was discussed. The results showed that, the ash water had reached the part wells downstream, under the soaking and leaching action of atmospheric precipitation and ash water, the Cr6+, F- and calcium and magnesium salts in dumping site precipitate a lot and infiltrated with the ash water, while limestone has certain adsorption of fluoride. According to the experiment data, the fly ash dumping site is the main reason which cause Cr6+, F- and total hardness to rise in Jiaozuo north middle karst groundwater. |
