Bi2S3/nylon membrane photothermal absorber with water shortage warning capability for seawater desalination

2021 ◽  
Vol 286 ◽  
pp. 129188
Author(s):  
Zhidan Wang ◽  
Feifei Li ◽  
Zhengfeng Shen ◽  
Rui Li ◽  
Xiaochao Zhang ◽  
...  
Keyword(s):  
Water Shortage ◽  
Seawater Desalination ◽  
Nylon Membrane

scholarly journals Evaluation of environmental indicators of RO seawater desalination: case study coastal strip of Hormozgan province, Iran

2020 ◽  
Vol 69 (7) ◽  
pp. 694-703
Author(s):  
Somayeh Mohammadi Jouzdani ◽  
Mohammad Mahdi Zerafat ◽  
Peyman Daneshkar Arasteh ◽  
Hassan Vagharfard
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Environmental Sustainability ◽  
Supply And Demand ◽  
Specific Energy Consumption ◽  
Water Shortage ◽  
Environmental Indicators ◽  
Water Withdrawal ◽  
Feed Water ◽  
Seawater Desalination

Abstract In recent years, desalination has been turned into a fresh water supply as a solution in some areas which suffer from water shortage. Desalinated water as an industrial product causes environmental problems. The objectives of this study are investigating environmental sustainability indicators related to seawater desalination via reverse osmosis (SWRO) on the coastline of Hormozgan province to provide a better insight for current and future water and energy demands related to this alternative. The selected indicators are specific energy consumption, seawater withdrawal, and brine volume in desalination, fuel consumption, carbon emission and water withdrawal in electric power generation. Using a solution-diffusion model, the direct indicator of energy consumption was obtained as used to calculate indirect indicators from the energy generation sector. Analysis of results indicates that desalination can lead to out-of-area side effects resulting from fuel type consumed and the practical power of the power plant, in addition to the regional environmental effects that are mostly affected by total dissolved solids of feed water. Based on the results, the environmental issues should be considered for the regions where desalination was planned as the most feasible alternative for water supply. This result can help policymakers to manage water supply and demand for sustainable development appropriately.

Current Status and Development of Chinese Seawater Desalination Technology

2014 ◽  
Vol 700 ◽  
pp. 511-514
Author(s):  
Xiao Mei Deng ◽  
Li Zhen Gao
Keyword(s):  
Climate Change ◽  
Water Scarcity ◽  
Water Shortage ◽  
Green Energy ◽  
Current Status ◽  
Seawater Desalination ◽  
Development Direction ◽  
Desalination Technology ◽  
Harsh Climate

Based on the increasingly harsh climate change and water scarcity in China, the seawater desalination is gradually becoming one of the important alternatives to solve the problems of water shortage. This paper makes a comparison among various technologies for seawater desalination and forecasts the development direction and the advanced desalination process merged with other green energy techniques.

SEAWATER DESALINATION: A SUSTAINABLE SOLUTION TO WORLD WATER SHORTAGE

2016 ◽  
Vol 1 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Jonathon Blesing ◽  
Con Pelekani
Keyword(s):  
Water Shortage ◽  
Seawater Desalination

Facing water shortage in a Mediterranean tourist area: seawater desalination or water reuse?

2003 ◽  
Vol 3 (3) ◽  
pp. 63-70 ◽  
Author(s):  
P. Xu ◽  
F. Brissaud ◽  
M. Salgot
Keyword(s):  
Water Resources ◽  
Water Demand ◽  
Water Reuse ◽  
Public Perception ◽  
Groundwater Resources ◽  
Water Shortage ◽  
Economic Benefits ◽  
Treated Wastewater ◽  
Economic Modelling ◽  
Seawater Desalination

An integrated technical-economic modelling framework was developed to help planning and managing of water resources in a Mediterranean tourist area, Palma on Majorca island (Spain). Due to high water demand, groundwater resources are depleted and new water resources should be developed. Seawater desalination has become an important solution to water shortage, especially in the summer tourist season. Meanwhile, reclaimed water has been applied for agricultural and landscape irrigation. With regard to the treated wastewater not being effectively reused, further water reuse scenarios are envisaged in order to meet new water demand, restore over-exploited aquifers and reduce expensive seawater desalination. Three types of models were established and coupled: (i) hydrological models; (ii) water demand and/or need model; (iii) technical-economic model. In addition, a multi-criteria analysis completed the technical-economic modelling. The simulated water reuse scenarios are not alternative but complementary. They provide the possibilities for total reuse of wastewater in the Palma area. Compared with seawater desalination, water reuse is a cost-effective solution to address water scarcity issues in the Palma area. Using tertiary effluent for landscape irrigation allows over-exploited aquifers to recover. It is very attractive in terms of economic benefits and feasible with respect to technical and social aspects. Further water reuse for extending agricultural irrigation can greatly reduce seawater desalination but acquiring the farmers' agreement to give up pumping groundwater for irrigation would meet some difficulties. Water recharge would help to totally reuse wastewater but uncertainties related to public perception and the attitude or regulatory board and local authorities need dealing with. Because water reuse requires a long-term managing viewpoint in order to prepare and demonstrate its feasibility and security, seawater desalination was adopted as an emergency solution to meet peak demands during the tourist season and in case of drought.

scholarly journals Seawater desalination in China: an overview

2018 ◽  
Vol 9 (2) ◽  
pp. 115-132 ◽  
Author(s):  
Zhongfan Zhu ◽  
Dingzhi Peng ◽  
Hongrui Wang
Keyword(s):  
Water Resource ◽  
Supply And Demand ◽  
Water Shortage ◽  
Water Crisis ◽  
Seawater Desalination ◽  
Existing Problems ◽  
History Of ◽  
Alternative Water ◽  
Desalination Plants ◽  
Further Development

Abstract China, especially its coastal provinces, is facing water shortage issues, restricting its further development. To tackle the serious imbalance between water resource supply and demand, China has strived to develop alternative water resources to combat the water crisis, among which seawater desalination plays a major role. This paper reviews the current situation of utilization of desalinated seawater in China and includes: (1) a history of seawater desalination classified into three phases; (2) analysis of utilization sectors, geographic distribution and employed technologies of the desalination plants; (3) summaries of the policies, regulations and technological standards governing seawater desalination; (4) proposals for existing problems and some suggested measures regarding the current condition of seawater desalination; and (5) the seawater desalination programs in Tianjin and Zhoushan are presented as two representative examples. China's seawater desalination experience can provide some guidance for other countries facing similar water resource situations.

Water shortage and seawater desalination by electrodialysis

Desalination ◽  
2003 ◽  
Vol 158 (1-3) ◽  
pp. 267-270 ◽  
Author(s):  
Toraj Mohammadi ◽  
Anita Kaviani
Keyword(s):  
Water Shortage ◽  
Seawater Desalination

Ion Distribution in Saltwater under High-Voltage Static Electric Field

2011 ◽  
Vol 361-363 ◽  
pp. 865-869 ◽  
Author(s):  
Liang Gu ◽  
Xin Gang Chen ◽  
Xiao Dong Liu ◽  
Wei Liu
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Separation Efficiency ◽  
Water Shortage ◽  
Seawater Desalination ◽  
Static Electric Field ◽  
Ion Distribution ◽  
Dissolved Ions ◽  
Water Pipeline ◽  
Desalination Technology

The world is facing a severe crisis of fresh water shortage. Seawater desalination technology is the ideal answer to this crisis. However, the conventional technologies consume too much energy, which greatly restrict their popularization. A method for saltwater desalination is proposed based on high-voltage static electric field eliminating the dissolved ions in saltwater. The desalination function is realized by static high-voltage electric field exerting electric force on the ions in the salt solution to strongly separate the ions of the contrary sign. Three factors were simulated to reveal their effects on the ion distribution or the separation efficiency, including salt concentration, electric field intensity and width of water pipeline. Results shows that the above three factors greatly affect the ion distribution characteristics in the water pipeline. This method is helpful in energy saving for seawater desalination.

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