Treatment of distillates and permeates from seawater desalination plants

Ludwig, Heinz; Hetschel, M.

doi:10.1016/0011-9164(86)85018-4

Cited by 22 publications

(3 citation statements)

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“…On the other hand, in water systems, the removal of carbon dioxide has been utilized to improve the water quality in recirculating aquaculture systems using an airlift pump in a well-mixed tank reactor, − vacuum airlift in a stripping column, packed columns − and submerged aerators, remineralization and conditioning of product water and pretreatment of seawater in desalination plants using packed columns, vacuum and forced draft packed columns, − increasing water recovery in brackish water desalination systems using a stirred tank batch reactor, protection of ion exchange systems in ultrapure water applications using hollow fiber membrane contactors − and vacuum and forced draft packed columns, , stabilization of aggressive/corrosive water in municipal water supplies using aerated tray columns, and adjustment of the pH of spring water without chemical addition using a bubble column …”

Section: Introductionmentioning

confidence: 99%

A Review of the Absorption and Desorption Processes of Carbon Dioxide in Water Systems

Elhajj

Al‐Hindi

Azizi

2013

Ind. Eng. Chem. Res.

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This article is a comprehensive review of the literature dealing with the transfer of carbon dioxide to water where no chemical reactions are taking place. It reviews the studies related to the absorption and desorption kinetics, mass-transfer rates, effect of the contactor geometry, effect of water salinity, and the effects of temperature and pressure on the process in conventional reactors or the more recently common membrane contactors. The available data show inconsistent trends and an abundance of system-and geometry-specific correlations/models to predict the mass-transfer performance, which may explain the inefficient design of most industrially available contactors. Furthermore, no agreement can be found in the literature on the effect of temperature and pressure of the system, as well as the presence of additives in the water, on the solubility of CO 2 .

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Section: Introductionmentioning

confidence: 99%

A Review of the Absorption and Desorption Processes of Carbon Dioxide in Water Systems

Elhajj

Al‐Hindi

Azizi

2013

Ind. Eng. Chem. Res.

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“…It was determined that the population mean for the RI index is significantly (α = 0.05) equal to 9. Based on the interpretations for this index [54], the water may have a tendency to dissolve scale and likely release iron.…”

Section: Resultsmentioning

confidence: 99%

Potential for iron release in drinking water distribution system: a case study of Hamedan city, Iran

Mesdaghinia

Nabizadeh

Nasseri

et al. 2016

Desalination and Water Treatment

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A B S T R A C TBlending of water from different sources into an urban drinking water distribution system can have unintended impacts, such as corrosion and/or release of corrosion by-products from pipe surfaces. Hamedan, a city in west Iran, receives water from four different sources that have different physical and chemical characteristics. The potential for iron release from iron distribution pipes due to in situ blending of different sources was investigated in this study. A dedicated software was developed to calculate the corrosion indices of different blends expected in different zones of Hamedan's water distribution system. The calculated corrosion indices, and iron release were verified and correlated to actual conditions through water sampling conducted in different zones of the city. The Langelier index (LI), Ryznar stability index (RSI or RI), Puckorius scaling index (PSI), and the calcium carbonate precipitation potential were found to be −0.60 ± 0.30, 8.63 ± 0.57, 8.18 ± 0.34, and −10.95 ± 6.9 mg CaCO 3 /L, respectively. Alkalinity, pH, and carbonate ion were identified as the important parameters that have a role in the control of iron release. Significant linear correlations of LI, RI, and PSI to iron concentration were observed in samples collected from different zones of the distribution system. The spatial correlation between iron concentration and corrosion indices in different zones of the water distribution system was determined using ordinary Kriging interpolation. These indices indicated a wide variation of corrosive potential in different zones of the distribution system. Therefore, these corrosion indices can be used to estimate, monitor, and minimize the potential for iron release from distribution systems.

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“…The aim of a remineralization plant is to convert the product water from a desalination process units into potable water for civil consumption [5]. The treatment process includes the following stages: CO 2 recovery from the MSF plant vents limestone dissolution (not lime dosing) corrosion inhibitor dosing potable water chlorination The remineralization plant can be divided, from the process point of view into three main parts: a) Carbon dioxide compression and feeding system b) Carbon dioxide purification and absorption c) Limestone dissolution, degasifying and chemical dosing system…”

Section: Introductionmentioning

confidence: 99%