High recovery and fouling resistant double stage seawater reverse osmosis: An inter-stage ERD configuration optimized with internally-stage design (ISD)

Rancangan sistem BWRO dengan persentase air hasil pengolahan yang tinggi (high recovery) akan mengurangi biaya operasinya. Untuk mencapai high recovery, skema multistage diterapkan dalam rancangan BWRO ini. Dengan menerapkan skema multistage dan nilai recovery per elemen sebesar 14,53%, sistem BWRO ini memiliki keandalan (reliability) yang baik dengan investasi yang rendah. Air yang diolah pada BWRO merupakan air keluaran dari Seawater Reverse Osmosis (SWRO), air keluaran SWRO ini masih mengandung mineral di dalamnya. Kandungan mineral di dalam air disebut Total Dissolved Solids (TDS), TDS merupakan parameter yang harus dikurangi jumlahnya. Air keluaran SWRO merupakan brackish water dengan kandungan TDS 400 mg/L, temperature 25"C, dan nilai pH 8. Perancangan BWRO dimulai dari menentukan kebutuhan jumlah air dan mengetahui karakteristik air yang akan diolah. Kemudian, dilakukan pemilihan elemen membran dan pressurevessel, menentukan recoveryrate, dan menentukan jumlah stage. Selanjutnya, adalah menentukan tekanan input dan menghitung parameter performansi BWRO. Selain TDS, parameter yang menjadi pesyaratan dalam rancangan BWRO ini adalah Specific Membrane Permeability (SMP) standar BWRO yaitu 4,9-8,3 Lmh/bar. Dari hasil rancangan didapat feed flow 127,28 m3/jam, permeateflow 113 m3/jam, jumlah vessel stage 1 dan 2 masing-masing 12 buah dan 4 buah, TDS 7,72 mg/L, SMP stage 1 dan stage 2 masing - masing 6,52 Lmh/bar dan 6,87 Lmh/bar.

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High recovery system in seawater reverse osmosis plants

Journal of Applied Polymer Science ◽

10.1002/app.27943 ◽

2008 ◽

Vol 108 (5) ◽

pp. 3403-3410 ◽

Cited By ~ 7

Author(s):

Nobuya Fujiwara ◽

Hideto Matsuyama

Keyword(s):

Reverse Osmosis ◽

High Recovery ◽

Recovery System ◽

Seawater Reverse Osmosis

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Characterization of seawater reverse osmosis fouled membranes from large scale commercial desalination plant

10.31221/osf.io/96zj5 ◽

2019 ◽

Author(s):

Chem Int

Keyword(s):

Reverse Osmosis ◽

Large Scale ◽

Retention Rate ◽

Local Level ◽

Microscopic Analysis ◽

Transmembrane Pressure ◽

Hydraulic Permeability ◽

Seawater Reverse Osmosis ◽

A Chain

The objective of this work is to study the ageing state of a used reverse osmosis (RO) membrane taken in Algeria from the Benisaf Water Company seawater desalination unit. The study consists of an autopsy procedure used to perform a chain of analyses on a membrane sheet. Wear of the membrane is characterized by a degradation of its performance due to a significant increase in hydraulic permeability (25%) and pressure drop as well as a decrease in salt retention (10% to 30%). In most cases the effects of ageing are little or poorly known at the local level and global measurements such as (flux, transmembrane pressure, permeate flow, retention rate, etc.) do not allow characterization. Therefore, a used RO (reverse osmosis) membrane was selected at the site to perform the membrane autopsy tests. These tests make it possible to analyze and identify the cause as well as to understand the links between performance degradation observed at the macroscopic scale and at the scale at which ageing takes place. External and internal visual observations allow seeing the state of degradation. Microscopic analysis of the used membranes surface shows the importance of fouling. In addition, quantification and identification analyses determine a high fouling rate in the used membrane whose foulants is of inorganic and organic nature. Moreover, the analyses proved the presence of a biofilm composed of protein.

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Numerical methodology and CFD simulations of a rotary vane energy recovery device for seawater reverse osmosis desalination systems

Applied Thermal Engineering ◽

10.1016/j.applthermaleng.2021.116788 ◽

2021 ◽

Vol 190 ◽

pp. 116788

Author(s):

Fanghua Ye ◽

Giuseppe Bianchi ◽

Sham Rane ◽

Savvas A. Tassou ◽

Jianqiang Deng

Keyword(s):

Reverse Osmosis ◽

Energy Recovery ◽

Cfd Simulations ◽

Seawater Reverse Osmosis ◽

Reverse Osmosis Desalination

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Full-Scale Seawater Reverse Osmosis Desalination Plant Simulator

IFAC-PapersOnLine ◽

10.1016/j.ifacol.2020.12.780 ◽

2020 ◽

Vol 53 (2) ◽

pp. 16561-16568

Author(s):

Mariam Elnour ◽

Nader Meskin ◽

Khlaed M. Khan ◽

Raj Jain ◽

Syed Zaidi ◽

...

Keyword(s):

Reverse Osmosis ◽

Full Scale ◽

Desalination Plant ◽

Seawater Reverse Osmosis ◽

Reverse Osmosis Desalination

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Seawater reverse osmosis at high pressures

Desalination ◽

10.1016/0011-9164(85)80003-5 ◽

1985 ◽

Vol 54 ◽

pp. 19-26 ◽

Cited By ~ 3

Author(s):

C.T. Sackinger

Keyword(s):

Reverse Osmosis ◽

High Pressures ◽

Seawater Reverse Osmosis

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Novel pre-treatment method for seawater reverse osmosis: Fibre media filtration

Desalination ◽

10.1016/j.desal.2009.09.023 ◽

2010 ◽

Vol 250 (2) ◽

pp. 557-561 ◽

Cited By ~ 17

Author(s):

J.J. Lee ◽

M.A.H. Johir ◽

K.H. Chinu ◽

H.K. Shon ◽

S. Vigneswaran ◽

...

Keyword(s):

Reverse Osmosis ◽

Treatment Method ◽

Seawater Reverse Osmosis ◽

Pre Treatment

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

Membranes ◽

10.3390/membranes11010040 ◽

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.

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