Coupling of electromembrane processes with reverse osmosis for seawater desalination: Pilot plant demonstration and testing

Desalination ◽  
2022 ◽  
Vol 526 ◽  
pp. 115541
Author(s):  
Luigi Gurreri ◽  
Mariagiorgia La Cerva ◽  
Jordi Moreno ◽  
Berry Goossens ◽  
Andrea Trunz ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Pilot Plant ◽  
Seawater Desalination ◽  
Electromembrane Processes

Evaluation of microfiltration system performance as pre-treatment for reverse osmosis seawater desalination through pilot-plant operation

2006 ◽  
Vol 6 (4) ◽  
pp. 163-169
Author(s):  
S.H. Kim ◽  
J.S. Yoon ◽  
C.H. Yoon
Keyword(s):  
Energy Consumption ◽  
Reverse Osmosis ◽  
Chlorophyll A ◽  
Flow Rate ◽  
Pilot Plant ◽  
Red Tide ◽  
Seawater Desalination ◽  
Plant Operation ◽  
Chlorophyll A Concentration ◽  
Pre Treatment

This study was undertaken to evaluate the suitability of microfiltration (MF) as pre-treatment for reverse osmosis (RO) seawater desalination to treat the seawater suffering from red-tide contamination using long-term operation of pilot plant. The one and a half year pilot MF operation had two objectives: stable production of the flow rate of 5 m3/h and acceptable water quality (SDI less than 3). The pilot plant operation revealed that the MF system successfully produced the target flow rate despite red-tide contamination of the seawater. The average flow rate of 5.2 m3/h was obtained at the average operating pressure of 0.53 bar. However, the MF system failed to achieve the target flow rate at red-tide bloom. When red-tide bloom occurred the chlorophyll-a concentration became 136 mg/m3, the flow rate decreased to half of the target, and energy consumption became extremely high. Subsequently, the operation was stopped. According to the relationship between the flow rate of the MF system and chlorophyll-a concentration developed in this study, it would be desirable to stop the MF operation at chlorophyll-a concentration of 57 mg/m3. The MF system produced acceptable quality water for RO feeding. The SDI of the MF treated was consistently less than 3. The MF system consumed 0.5 KWh of energy to produce 1 m3/h of MF treated, if the data during the red-tide bloom were excluded. Extra equipment (intake pump, control system, monitoring system, air conditioner) caused higher energy consumption than expected.

Removal of Residual Nutrients and Chemical Additives From Secondary Sewage by Reverse osmosis

1975 ◽  
Vol 10 (1) ◽  
pp. 101-109
Author(s):  
H. Kirk Johnston ◽  
H.S. Lim
Keyword(s):  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Pilot Plant ◽  
Waste Treatment ◽  
Iron Chloride ◽  
Treatment Technique ◽  
Chemical Additives ◽  
Cellulose Acetate Membranes ◽  
Municipal Wastewaters ◽  
Nutrient Solutions

Abstract The suitability of reverse osmosis as a renovation technique for the treatment of municipal wastewaters has been assessed. Cellulose acetate membranes capable of 70% and 90% NaCl rejections were employed in both laboratory and pilot plant studies to evaluate the efficiency of this technique in removing the residual precipitant chemicals generally employed in phosphorus removal programs (iron chloride, alum, and lime) and the nutrients (phosphates, nitrates and ammonia) characteristic of municipal wastewaters. Secondary sewage and raw sewage as well as prepared nutrient solutions were employed in the course of this program. Both laboratory and pilot plant studies indicated consistently outstanding removal efficiencies for the species examined, almost independent of the nature of the waste solutions being treated. Permeation of the purified effluent was subject to significant reductions due to membrane fouling. This characteristic was most pronounced for the more permeable (less selective) membranes. Routine chemical and physical cleanings enable satisfactory flux levels to be maintained, thereby suggesting that reverse osmosis may become a viable municipal waste treatment technique.

Zwitterionic and hydrophilic polyelectrolyte/metal ion anti-fouling layers via covalent and coordination bonds for reverse osmosis membranes

2021 ◽  
Author(s):  
Mengying Jiang ◽  
Li-Ye Chen ◽  
Qian Zou ◽  
Siwei Xiong ◽  
Peigen Fu ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Metal Ion ◽  
Sewage Treatment ◽  
Membrane Technology ◽  
Seawater Desalination ◽  
Ro Membrane ◽  
Coordination Bonds ◽  
Reverse Osmosis Membranes

Reverse osmosis (RO) membrane technology, as an effective and eco-friendly method, has been widely used for seawater desalination and sewage treatment. However, RO membranes inevitably suffer serious organic and biological...

scholarly journals Environmental Performance of Small-Scale Seawater Reverse Osmosis Plant for Rural Area Water Supply

Membranes ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 40
Author(s):  
Latifah Abdul Ghani ◽  
Nora’aini Ali ◽  
Ilyanni Syazira Nazaran ◽  
Marlia M. Hanafiah
Keyword(s):  
Drinking Water ◽  
Global Warming ◽  
Water Supply ◽  
Reverse Osmosis ◽  
Resource Scarcity ◽  
Small Scale ◽  
Seawater Desalination ◽  
Seawater Reverse Osmosis ◽  
Desalination Technology ◽  
The Impact

Seawater desalination is an alternative technology to provide safe drinking water and to solve water issues in an area having low water quality and limited drinking water supply. Currently, reverse osmosis (RO) is commonly used in the desalination technology and experiencing significant growth. The aim of this study was to analyze the environmental impacts of the seawater reverse osmosis (SWRO) plant installed in Kampung Pantai Senok, Kelantan, as this plant was the first installed in Malaysia. The software SimaPro 8.5 together with the ReCiPe 2016 database were used as tools to evaluate the life cycle assessment (LCA) of the SWRO plant. The results showed that the impact of global warming (3.90 kg CO2 eq/year) was the highest, followed by terrestrial ecotoxicity (1.62 kg 1,4-DCB/year) and fossil resource scarcity (1.29 kg oil eq/year). The impact of global warming was caused by the natural gas used to generate the electricity, mainly during the RO process. Reducing the environmental impact can be effectively achieved by decreasing the electricity usage for the seawater desalination process. As a suggestion, electricity generation can be overcome by using a high-flux membrane with other suitable renewable energy for the plant such as solar and wind energy.

scholarly journals A Review of Nanotechnology Application for Seawater Desalination Process. SOIJST Vol. 1 (1):155-179

2018 ◽  
Author(s):  
Evan Jordan
Keyword(s):  
Energy Efficiency ◽  
Population Growth ◽  
Reverse Osmosis ◽  
Human Population ◽  
High Rate ◽  
Seawater Desalination ◽  
Human Population Growth ◽  
Freshwater Resource ◽  
Efficiency And Effectiveness

As freshwater resource decreasing rapidly due to high rate of human population growth, many researchers have done studies to develop methods for producing freshwater supply. Seawater desalination is one of the method that has the credibility to be implemented. However, conventional seawater desalination processes suffer from a number of problems related to energy efficiency and cost. In spite of this, nanotechnology has been applied to the process. In this paper, we give an overview and explanations concerning the roles of nanotechnology in seawater desalination processes which consist of pretreatment, reverse osmosis (RO), and disinfection. In addition, the comparisons between conventional and nanotechnology-applied processes as related to its efficiency and effectiveness are also provided.

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