Current use of enrichment and processing technologies of ores requires the introduction of closed circuits of water treatment. A decrease in technological properties is caused by accumulations of ion-molecular compone...Current use of enrichment and processing technologies of ores requires the introduction of closed circuits of water treatment. A decrease in technological properties is caused by accumulations of ion-molecular components in the circulating water. The objective of the simulation is to determine the maximum allowable concentrations of ions and molecules as well as the choice of conditions for deposition or adsorption.First of all, our examinations decrease the concentration of copper ions and fatty acids in the circulating water. By pre-mixing water with the highest concentration of these ions, a reduction of copper ion and fatty acid concentrations in the recycled water occurs. The results do not only ensure the achievement of the maximum permitted concentration(MPC) of copper and iron, significantly reducing the amount of oxidized copper, they also make it possible to use the united sewage as current water for the flotation process. Mixing and adding filtrate of tailings, discharges of urban wastewater treatment and effluent of ash pit of thermal power stations(TPS) to recycled water causes an increase in the capacity of the enrichment plant by 15–17%.展开更多
Phosphorus （P） reserve, largely derived from phosphate rock, is essential for crop growth to support the growing world population. However, a significant proportion of phosphorus used as a fertilizer runs into natur...Phosphorus （P） reserve, largely derived from phosphate rock, is essential for crop growth to support the growing world population. However, a significant proportion of phosphorus used as a fertilizer runs into natural waters, causing eutro- phication and ecological damage. Moreover, most P in the food is eventually discharged as waste after being digested by human and animals. Thus, industrial activities have created a one-way flow of non-renewable P from rocks to farms to lakes, rivers and oceans.展开更多
为实现区域水资源的动态调控,立足河北邯郸市水资源本底条件差且管理需求高的现状,利用水资源通用配置与模拟(general water allocation and simulation,GWAS)模型构建了基于自然-社会二元水循环的动态邯郸市水资源配置模型,在选用1980...为实现区域水资源的动态调控,立足河北邯郸市水资源本底条件差且管理需求高的现状,利用水资源通用配置与模拟(general water allocation and simulation,GWAS)模型构建了基于自然-社会二元水循环的动态邯郸市水资源配置模型,在选用1980—2016年和2020年相关数据分别对模型水循环模块和配置模块开展参数率定和验证的基础上,对区域2025年和2035年平水年(保证率P=50%)、枯水年(P=75%)的水资源分别进行配置。结果表明:邯郸市2025年平水年和枯水年的配置水量分别为22.43×10^(8)m^(3)和21.53×10^(8)m^(3),缺水率分别为11.70%和22.13%,缺水口主要在农业;2035年平水年和枯水年的配置水量分别为25.02×10^(8)m^(3)和23.31×10^(8)m^(3),缺水率分别为4.53%和21.81%,其缺水情况较2025年明显改善;受邯郸市天然水资源匮乏和西高东低的地势影响,全市水资源缺口主要在西部武安市和东部邱县;未来邯郸市地下水仍是主要供水水源,但随着生态文明建设和地下水综合治理的纵深推进,其占比将逐渐下降,而外调水和非常规水的供水量将有所增加。可见,研究成果可为邯郸市实施水资源动态配置提供技术支撑,对实现区域水资源动态管理具有重要的现实意义。展开更多
Water resource shortages, water environmental deterioration, and water ecological degradation are becoming increasingly prominent in the Haihe River Basin under the effects of global climate change and intense human a...Water resource shortages, water environmental deterioration, and water ecological degradation are becoming increasingly prominent in the Haihe River Basin under the effects of global climate change and intense human activity. Finding ways to solve these problems reasonably is an urgent task in basin water resources management. The water cycle describes the formation and transformation of every water drop, while it interacts with associated water ecology and water environment processes. Therefore, to fundamentally solve the above problems, the three processes must be combined and the evolutionary trends of the ecology and water environment driven by the water cycle must be determined. To comprehensively diagnose and solve the problems of water resources, ecology and water environment in the basin, an integrated simulation platform of the dualistic water cycle and its associated processes in the Haihe River Basin was established by fully analyzing the "natural-social" dualistic characteristics of the evolution of the basin water cycle in this study. Accordingly, it is a supporting tool to evaluate the future trends of water resources, ecology and the water environment by setting scenarios based on the predictions of a climate mode and water control conditions. The results show that with climate change, the water consumption, groundwater overexploitation, and the amount of water flowing to the sea could develop soundly and satisfy the requirements of national economic growth in the future planning year 2030 through the implementation of water consumption control management and the South-North Water Diversion Project. Meanwhile, associated water environmental deterioration can be alleviated, and a growing trend for production capacities of the natural ecosystem and agro-ecosystem is seen. The above results provide a foundation for implementing basin water resources regulation and the most strict water resources management.展开更多
文摘Current use of enrichment and processing technologies of ores requires the introduction of closed circuits of water treatment. A decrease in technological properties is caused by accumulations of ion-molecular components in the circulating water. The objective of the simulation is to determine the maximum allowable concentrations of ions and molecules as well as the choice of conditions for deposition or adsorption.First of all, our examinations decrease the concentration of copper ions and fatty acids in the circulating water. By pre-mixing water with the highest concentration of these ions, a reduction of copper ion and fatty acid concentrations in the recycled water occurs. The results do not only ensure the achievement of the maximum permitted concentration(MPC) of copper and iron, significantly reducing the amount of oxidized copper, they also make it possible to use the united sewage as current water for the flotation process. Mixing and adding filtrate of tailings, discharges of urban wastewater treatment and effluent of ash pit of thermal power stations(TPS) to recycled water causes an increase in the capacity of the enrichment plant by 15–17%.
基金supported by the National Key Research and Development Program of China (No. 2017YFA0207204)
文摘Phosphorus （P） reserve, largely derived from phosphate rock, is essential for crop growth to support the growing world population. However, a significant proportion of phosphorus used as a fertilizer runs into natural waters, causing eutro- phication and ecological damage. Moreover, most P in the food is eventually discharged as waste after being digested by human and animals. Thus, industrial activities have created a one-way flow of non-renewable P from rocks to farms to lakes, rivers and oceans.
文摘为实现区域水资源的动态调控,立足河北邯郸市水资源本底条件差且管理需求高的现状,利用水资源通用配置与模拟(general water allocation and simulation,GWAS)模型构建了基于自然-社会二元水循环的动态邯郸市水资源配置模型,在选用1980—2016年和2020年相关数据分别对模型水循环模块和配置模块开展参数率定和验证的基础上,对区域2025年和2035年平水年(保证率P=50%)、枯水年(P=75%)的水资源分别进行配置。结果表明:邯郸市2025年平水年和枯水年的配置水量分别为22.43×10^(8)m^(3)和21.53×10^(8)m^(3),缺水率分别为11.70%和22.13%,缺水口主要在农业;2035年平水年和枯水年的配置水量分别为25.02×10^(8)m^(3)和23.31×10^(8)m^(3),缺水率分别为4.53%和21.81%,其缺水情况较2025年明显改善;受邯郸市天然水资源匮乏和西高东低的地势影响,全市水资源缺口主要在西部武安市和东部邱县;未来邯郸市地下水仍是主要供水水源,但随着生态文明建设和地下水综合治理的纵深推进,其占比将逐渐下降,而外调水和非常规水的供水量将有所增加。可见,研究成果可为邯郸市实施水资源动态配置提供技术支撑,对实现区域水资源动态管理具有重要的现实意义。
基金supported by the National Basic Research Program of China (2006CB403404)the Innovation Foundation Program of the National Natural Science Foundation of China (51021066)+3 种基金the Key Program of the National Natural Science Foundation of China (50939006)the National Natural Science Foundation of China (51109224)National Water Pollution Control and Management Technology Major Projects (2008ZX07209-009-4)the National Key Technology and R&D Program (2010BAC69B02)
文摘Water resource shortages, water environmental deterioration, and water ecological degradation are becoming increasingly prominent in the Haihe River Basin under the effects of global climate change and intense human activity. Finding ways to solve these problems reasonably is an urgent task in basin water resources management. The water cycle describes the formation and transformation of every water drop, while it interacts with associated water ecology and water environment processes. Therefore, to fundamentally solve the above problems, the three processes must be combined and the evolutionary trends of the ecology and water environment driven by the water cycle must be determined. To comprehensively diagnose and solve the problems of water resources, ecology and water environment in the basin, an integrated simulation platform of the dualistic water cycle and its associated processes in the Haihe River Basin was established by fully analyzing the "natural-social" dualistic characteristics of the evolution of the basin water cycle in this study. Accordingly, it is a supporting tool to evaluate the future trends of water resources, ecology and the water environment by setting scenarios based on the predictions of a climate mode and water control conditions. The results show that with climate change, the water consumption, groundwater overexploitation, and the amount of water flowing to the sea could develop soundly and satisfy the requirements of national economic growth in the future planning year 2030 through the implementation of water consumption control management and the South-North Water Diversion Project. Meanwhile, associated water environmental deterioration can be alleviated, and a growing trend for production capacities of the natural ecosystem and agro-ecosystem is seen. The above results provide a foundation for implementing basin water resources regulation and the most strict water resources management.
