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ncycgdxhl
Wysłany: Pon 21:31, 14 Lut 2011
Temat postu: Analysis of karst groundwater monitoring in Liulin
Analysis of karst groundwater monitoring in Liulin spring
And with human and financial support,
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, but also to expand our advocacy efforts and visibility for monitoring groundwater and create a good social atmosphere. Since relatively large area in Jilin City, and belongs to the mountain valley {'L {' H ・ H. }{・}'{・}_{・ H-}÷}_* bucket} 1; ・ H ・} {・ {・}{・}{・ Bu Bu Bu {・}'{・ H ・ {* Bu ; * Bu {・ H ・ H ・}'{+÷}'{・・} 1 {・ H ・}_{. Bu Bu {・・・}_the main factor is the decrease of precipitation decrease, followed by manual extraction increased. 3.4 Liulin spring water quality analysis of water quality monitoring key monitoring since 1996, periodic sampling, data are more complete. Liulin spring karst underground water from the supply to the area by the flow due to the Section hydrogeological conditions and large differences in hydrodynamic conditions, water depth between the media and circulation. analysis of the following laws: the eastern sub-karst groundwater quality generally good, from the upstream recharge area to discharge area by the flow area north Village East, south goal will,
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, Longquan group on the green, water temperature 17C below the salinity is lower than 600mg / l, are the HCO. a Ca ・ Mg-and HCO. a Na ・ Ca-based, integrated evaluation on water quality are good, according to water quality standards (GB/T14848-93) Ⅲ type of water below, meet drinking water standards. northwestern karst subsystem generally poor quality of underground water, upstream recharge area by the turbulent flow region head Linxian County, Jobs around the vicinity of 18C water temperature, salinity less than 1000mg / l, water type HCO. a Na ・ Ca type, basically not up to drinking standards,
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, to the downstream flow and discharge zones by the North Shore Geta Liu Quan groups, including the downstream discharge area, the water temperature is about 20C, salinity 1460mg / l, water type is HCO. ・ SO a Ca ・ Mg of a Na-and CI-type water, CI468mg / 1, SO up to 310mg / 1, comprehensive evaluation for the poor and very poor water quality standards (GB/T14848-93 ) Ⅲ type of water or more, is not up to drinking water standards. analysts believe that the main flow of the Northwest sub-area by the hydrogeochemical environment in a more closed reduction zone, the karst water deep zone, high temperature, the dissolution of soluble rock and role as sulfate, chloride increased solubility of the gypsum saturation index increased with the increase of ion content. by monitoring the Liulin spring 400m depth below the karst water in the chloride and sulfate ions seriously overweight, 54 can not drink, this part of the water about Liulin spring of 2j. Also in the exposed area to monitor the source of harmful elements in fluoride, phenol, arsenic,
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, mercury, six prices,
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, from 1996 the annual rate of zero, 2OO2, there were increasing and the increasing trend. Analysis The main reason is to reduce the Liulin spring water, upstream of the increase of urban sewage and industrial enterprises increased use of pesticides and fertilizers. These toxic elements leaching by rainfall and leaching, and the limestone areas along the limestone section of river leakage into the ground , into the Liulin spring spring water pollution. 4 Conclusions and Recommendations 4.1 Conclusions 1) Liulin spring monitoring data series long, the whole project, more accurate, comprehensive evaluation of recent Liulin spring guide Liulin spring development and protection of the scientific basis. 2 ) water quality monitoring data show that the Liulin spring, great changes have taken place, must rise to the relevant departments and the whole society's attention. 3) analysis of rainfall in recent years, in the next 2 to 3 years are still in decline in Liulin spring water trends, the exploitation of the Liulin spring must be strictly controlled. 4.2 Recommendation 1) against the harmful elements in Liulin spring from groundwater and springs increase the pollution, while continuing to strengthen the monitoring on the basis of spring water, spring water treatment upstream of the flow area sources of pollution, to prevent excessive discharge of sewage factories and mines. 2) The initiation of regional high sulfur water use of chlorine, the use of more economical water treatment method, is the current water use in western Liulin spring an important issue. 3) upstream of carbonate in the Liulin spring mountain of rock salt water channel built dam, blocking the flood, through the limestone into increased Liulin spring Liulin spring water supply.
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