A “carrier-load” perspective method for investigating regional water resource carrying capacity

Liao, Xia; Ren, Yitian; Shen, Liyin; Shu, Tianheng; He, Hongman; Wang, Jinhuan

doi:10.1016/j.jclepro.2020.122043

Cited by 57 publications

(22 citation statements)

References 40 publications

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“…Brackish Water of the motor is the ratio of the output mechanical power and input power, as show in (2). The efficiency of the HPP is the ratio of the effective power and input shaft power, as show in (3).…”

Section: Seawatermentioning

confidence: 99%

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Experimental Study on the Influence of Flexible Control on Key Parameters in Reverse Osmosis Desalination

Shuai

Zhang

et al. 2022

IEEE Access

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Variable-frequency drive (VFD) has been widely used in reverse osmosis desalination. Our purpose is to study how the VFD and pressure regulating valve affect the key parameters of reverse osmosis desalination and their action principle through experiments. Firstly, the power frequency is controlled by VFD, and the operating pressure is controlled by pressure regulating valve (needle valve) in the experiment. The feed water passes through the multimedia filter, precision filter and permeable membrane channel in turn, and permeate water and brine enter the fresh water tank and the brine tank respectively. Secondly, through experiments on seawater and brackish water respectively, the water flow rate, product water quality, energy consumption and recovery rate under different operating pressures are obtained when the power frequency is 25, 30, 35, 40, 45, and 50 respectively. Finally, combined with the working principle and mathematical model of VFD and high-pressure pump motor, the reason for the experimental results caused by the operation change is explained theoretically. The experimental results verify that for a certain recovery rate, the specific energy consumption required for water production decreases with decreasing power frequency. This provides desalination energy savings but at the expense of permeate production speed.

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Section: Seawatermentioning

confidence: 99%

“…Although water resources cover 70% of the Earth's surface, 97.5% of them are too high in salt to be directly consumed by humans [1]. The shortage of fresh water has become a common global crisis [2]- [4].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of Flexible Control on Key Parameters in Reverse Osmosis Desalination

Shuai

Zhang

et al. 2022

IEEE Access

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“…Subsequently, various concepts and theories of carrying capacity were introduced in different development stages and resources conditions. These theories, mainly focusing on the carrying capacities of natural resources, among which the carrying capacities of land, minerals, forest, ocean, etc., have been studied for a long time and achieved fruitful research [11][12][13][14][15]. Carrying capacity is a kind of portrayal of the survival ratio and consumption coefficient among human, nature, and society, and it is a sustainable development capacity under the threshold of harmonious development without being broken [16].…”

Section: Literature Reviewmentioning

confidence: 99%

Comparative Study on Relative Fossil Energy Carrying Capacity in China and the United States

et al. 2021

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Based on resource carrying capacity, this study used the revised theory of relative resource carrying capacity (RRCC) and introduced an innovative concept of relative fossil energy carrying capacity (RFECC), which evaluates the degree of fossil energy sustainability based on the relationship between economy, population, and environment. This study took China and the United States as the study objects, took the whole country as the reference area, and calculated the RFECC of population, economic, and environmental resources from 2000 to 2018. Therefore, based on the comparative analysis, the following conclusions were drawn: (i) there is a big difference in the RFECC between China and the United States, which is manifested in the inverted U-shaped trend in China and the U-shaped trend in the United States; (ii) the relative fossil energy carrying states in China and the United States are different, mainly reflected in the economy and environment; (iii) the gap in RFECC between China and the United States has gradually widened; in general, China’s economic RFECC is better than that of the United States, while environmental RFECC and population RFECC in the United States is better than that of China; and (iv) coal and oil should be used as a breakthrough point for the sustainable fossil energy and sustainable development for China and the United States, respectively.

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“…The research scope on the relationship between water resources and socio-economic development has been rather abundant from the perspective of WRCC. For instance, Meng et al [13] used a fuzzy comprehensive evaluation model to evaluate water resources carrying capacity in Tarim River Basin; Ding et al [14] established a multi-objective model to analyze water ecological carrying capacity of urban lakes; Wang et al [15] used system dynamics to appraise water resources carrying capacity of wetlands in Beijing; more studies were about regional water resources carrying capacity [16][17][18]. Besides, a few scholars introduced "coupling" to evaluate coupling coordination degree between water resources and socio-economic development.…”

Section: Introductionmentioning

confidence: 99%

System Dynamics Model for Evaluating Socio-Economic Impacts of Different Water Diversion Quantity from Transboundary River Basins—A Case Study of Xinjiang

Shao

Fang

et al. 2020

IJERPH

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With the rapid development of social economy and global climate warming, scarce transboundary water resources, as one of the basic resources for socio-economic development, have increasingly become the focus of basin countries. To investigate the socio-economic impacts of different water diversion quantity from transboundary river basins, we used a system dynamics (SD) model to reflect interactions between population, water resources, and socio-economic development, and applied it to a case study in Xinjiang to simulate its change tendency from 2011 to 2030 from the temporal dimension. Then, four water diversion quantity of transboundary river basins and four alternative socio-economic development patterns were designed to comprehensively evaluate these impacts of water diversion quantity change on the socio-economy of the region along the river under different socio-economic development patterns. The results indicate that (1) there was a positive correlation between water diversion quantity and the economic output value of the region along transboundary river basins, and the marginal benefit of transboundary water resources would decrease gradually; (2) considering the difficulty of water diversion from transboundary river basins and the protection of downstream water use and ecological health of transboundary river basins, we believe that increasing the transboundary water resources by 20% was more conducive to the sustainable development of Xinjiang’s socio-economy; (3) through the comparison of dynamic evolutions of socio-economic development and water impacts under four socio-economic development patterns, it is best for Xinjiang to plan its future development in the coordinated development of economic-resource scenario. Following this scenario, not only would the total output value of the socio-economy be better than other scenarios, but this also helps to alleviate the contradiction between the water supply and demand, which expected there would be a water shortage of 1.04 billion m3 in 2029 under 20% increase in water diversion quantity. Therefore, appropriate water diversion quantity, reasonable adjustment of industrial production growth rate, reduction of water consumption quotas of different industries and domestic water quota, and improvement of collection and treatment rate for sewage should be given priority in water resources management decision-making in Xinjiang or other arid regions along transboundary river basins.

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A “carrier-load” perspective method for investigating regional water resource carrying capacity

Cited by 57 publications

References 40 publications

Experimental Study on the Influence of Flexible Control on Key Parameters in Reverse Osmosis Desalination

Experimental Study on the Influence of Flexible Control on Key Parameters in Reverse Osmosis Desalination

Comparative Study on Relative Fossil Energy Carrying Capacity in China and the United States

System Dynamics Model for Evaluating Socio-Economic Impacts of Different Water Diversion Quantity from Transboundary River Basins—A Case Study of Xinjiang

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