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《Environmental Protection and Technology》 2017-04
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Spatial distribution of sediments and phosphorus forms of sediments Goupitan Reservoir

Zhou Si;Liu Yongxia;Guo Jianyang;Huang Shaojie;Guizhou Environmental Science Research and Design;Key Laboratory of water pollution control and resource utilization research;Institute of Geochemistry,Chinese Academy of Sciences;  
Phosphate mining and chemical industry are densely distributed in the catchment of the Wujiangdu reservoir-Goupitan Reservior segment in Wujiang River. Large amounts of phosphorus wastewater directly enter Wujiang River through groundwater and surface runoff. To study the characteristic of spatial distribution of sediments and the amounts of total phosphorus( TP) and phosphorus forms in sediments of Goupitan Reservoir,8 sediment samples are observed and analyzed from Wujiangdu Reservoir and Goupitan Reservoir in October 2016. The results indicated that the sediment distribution tends to be thinner from the dam to the rear of the reservoir. The length of sediment core in the dam is about 10 cm. Sediments at the bottom of the reservoir began to appear between 30-60 km to the dam. The total phosphorus in Wujiangdu Reservoir sediment ranged from 970. 52-3626. 22mg/kg. The total phosphorus in Goupitan Reservoir sediment ranged from 1587. 88-6346. 10 mg/kg. NaOH-P and HCl-P were the main forms of phosphorus in Wujiangdu reservoir sediments,and the amounts of NaOH-P are more than HCl-P. NaOH-P and HCl-P were the main forms of phosphorus in Goupitan reservoir sediments. Compared with the sediments of several lakes and reservoirs in different areas,the percentages of HCl-P are significantly higher than Wujiangdu reservoir's sediments and others'.
【Key Words】: Goupitan reservoir sediments spatial distribution Phosphorus forms
【Fund】: 基金项目:乌江流域水体达标方案
【CateGory Index】: X524
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