Submarine seawater reverse osmosis desalination system

Pacenti, P.; Gerloni, M. de; Reali, M.; Chiaramonti, David; Gärtner, Sven O.; Helm, Peter; Stöhr, Michael

doi:10.1016/s0011-9164(99)00177-0

Cited by 16 publications

(3 citation statements)

References 1 publication

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“…An RO desalination system submerged in the deep sea (“Deep-sea RO”) has also been investigated [ 89 , 90 ]. A deep-sea RO system is operated under the sea with a low recovery ratio, which has several expectable advantages: (1) it reduces the pressure applied on the RO membrane, (2) only permeate is required to pump up to the land (i.e., pumping cost is less than half), and (3) pre-treatment is expected to be less due to the feedwater being obtained from deep seawater as mentioned above.…”

Section: Ro Processmentioning

confidence: 99%

Advanced Technologies for Stabilization and High Performance of Seawater RO Membrane Desalination Plants

2021

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Seawater desalination plants that use reverse osmosis (RO) membranes have become a core part of social infrastructure, and should be designed to meet the needs of product water quality and production capacity, while considering various environmental factors such as the seawater quality, temperature and geographical features. Furthermore, stable operation while overcoming various problems should be achieved alongside the increasing demands for energy saving and cost reduction. As no universal plant apparatus and operation technology meets these various requirements, the plants need to be customized for individual solutions. This paper reviews and summarizes the proven technologies, including their advantages/disadvantages, and points to cutting-edge technologies related to the design and operation maintenance of seawater intake, pre-treatment and the RO desalination process.

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Section: Ro Processmentioning

confidence: 99%

Advanced Technologies for Stabilization and High Performance of Seawater RO Membrane Desalination Plants

2021

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“…The desalinated water, produced at about atmospheric pressure and collected in a submarine tank at the same working depth, is pumped to the sea surface. It was shown that this approach saves about 50% of the electricity consumption with respect to an efficient conventional RO plant (about 2-2.5 kWh/ m3) since only the outlet desalinated water is pumped instead of the inlet seawater, thus reducing the pumping flow rate by 55-80% (Pacenti et al, 1999). The advantage of this configuration is also to avoid the pre-treatment of the inlet seawater, therefore saving costs for chemicals and equipment (Charcosset, 2009). 3.…”

Section: Geothermal Desalinationmentioning

confidence: 99%

Application of Renewable Energies for Water Desalination

Goosen¹,

Mahmoudi²,

Ghaffour³

et al. 2011

Desalination, Trends and Technologies

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“…e produced fresh water is collected in a storage tank and then pumped to the sea level, and the brine is discharged into the sea [15][16][17]. In the underground plants, devices are placed at about 500 m underground.…”

Section: Introductionmentioning

confidence: 99%

A Hydrostatic Pressure-Driven Desalination System for Large-Scale Deep Sea Space Station

Yifan

et al. 2021

International Journal of Chemical Engineering

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Compared with the common marine renewable energy sources like solar, wind, and wave energy, etc., the hydraulic pressure stored in the deep seawater can output stable and successive energy flow. Thus, it can be directly coupled with the reverse osmosis (RO) process to supply drinkable mineral water for crews of Deep Sea Space Station (DSSS). We proposed a novel submarine RO desalination system driven by the hydraulic pressure of deep seawater (SHP-RO), composed of a desalination branch to generate fresh water and a back pressure branch to ensure the depth independence of the desalination. The influences of the deep sea environment on the RO were analyzed, based on which the pretreatment of the seawater and the preparation of the drinkable mineral water were studied. The turbine-based energy recovery scheme was investigated in virtue of the CFD simulation on the flow behavior in the different turbine series. It was predicted that, when the DSSS was located at the depth of 1100 m and the operating pressure of the RO process was 6.0 MPa, for a drinkable water production rate of 240 m3/d, the recovered hydraulic pressure energy can achieve 39.22 kW·h, which was enough for driving electricity consumers in the SHP-RO system.

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Submarine seawater reverse osmosis desalination system

Cited by 16 publications

References 1 publication

Advanced Technologies for Stabilization and High Performance of Seawater RO Membrane Desalination Plants

Advanced Technologies for Stabilization and High Performance of Seawater RO Membrane Desalination Plants

Application of Renewable Energies for Water Desalination

A Hydrostatic Pressure-Driven Desalination System for Large-Scale Deep Sea Space Station

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