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Studies are made of the laws that govern the heap leaching of stubborn uranium ores with regeneration of the oxidant – iron(III) ions – by iron-oxidizing microorganisms that have been concentrated by adsorptive immobilization on a solid neutral carrier material. The study results show how the amount of uranium recovered in solution, sulfuric-acid consumption, and the time of adsorption of the microorganisms...
The paper sets up a water quality and water quantity synthetically evaluation index system based on analytic hierarchy process, and then combine fuzzy cluster analysis to assessment evaluate the local groundwater environment comprehensively. The results showed that the method solved weight distribution problem better with such advantages as more reasonable and reliable conclusions, and estimated result...
In this paper an water quality and water quantity synthetical evaluation index system is established. Information entropy is used to determine weight of each factor of effect water quality and water quantityand fuzzy cluster analysis as well as comprehensive assessment is developed to evaluate the local groundwater environment. The results show that more reasonable and reliable conclusions are made...
In order to make the traditional dilution ratio more scientifically and reasonably, the ratio of the admitting water contamination concentration to the concentration guide of III level water (RACG), the ratio of the sewage discharge contamination concentration to the concentration guide of III level water (RSDG) , and the harm coefficient are introduced to improve the traditional dilution ratio. Then,...
Groundwater environment function regional partition is of important reference meaning to protection,exploitation, utilization of groundwater.This paper uses fuzzy cluster analysis to study function regional partition of groundwater environment, set up fuzzy similar matrix by oushi-distance method,and use different lambda to compartmentalize different function regions on groundwater environment on...
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