| The effect mechanism of discharge of the ash water from power plant on soil chemical component |
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| DOI：10.7606/j.issn.1000-7601.2010.01.19 |
| Key Words: ash water loess sand loam cation dissolution mechanism |
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| Abstract: |
| A leaching experiment was conducted to investigate the effect mechanism of ash water from Baqiao power plant on the soil chemical component. The results show that the loess has better buffering than the sand loam. There are apparent different in dissolution/deposition of K+, Na+, Ca2+ and Mg2+ in loess and sand loam. The cation is dissolute from sand loam and the permeability of sand loam is increasing, so the pollution risk of groundwater is increasing. There are dissolution of Na+, Mg2+ and deposition of K+ and Ca2+ when the loess mixes with the alkaline water. The deposition will pond the pore, decrease the hydraulic conductivity, and affect the constitution of soil, if ash water is discharged for long time. The water-soils chemical action (dissolution/deposition, cation exchanging) is the main reason of the cation dissolution and deposition in loess and sand loam. |
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