نتایج جستجو برای: low pressure ro membrane

تعداد نتایج: 1901968  

2018
Masaru Kurihara Hiromu Takeuchi

Reverse osmosis (RO) membranes have been widely applied in seawater desalination (SWRO) and wastewater reclamation as the main desalination technology since 2000. SWRO plants face challenges to reduce energy consumption and brine disposal to lessen marine pollution. To tackle these challenges, a SWRO-PRO (Pressure Retarded Osmosis) System was proposed in the “Mega-ton Water System” project unde...

Journal: : 2023

The aim of this research is to study the effect high concentrations salts, pressure and temperature on performance RO membrane with time. Four different (Na2CO3) (5000, 15000, 25000 35000) ppm various pressures such as (1, 3 5) bars at temperatures feed solution (i.e., 25, 35 45) ◦C were used in work. It was found that, concentration salt increase, rejection decrease. While membranes increases ...

Journal: :Processes 2023

The production of titanium dioxide via the sulfuric acid process generates large amounts acidic wastewater. Investigating possibility reusing this wastewater after deep treatment can reduce pollutant discharge and conserve water resources. In a pilot study, dual-membrane method ultrafiltration (UF) reverse osmosis (RO) was employed to perform treatments sulfuric-acid–titanium-dioxide findings s...

Journal: :Water Resources and Industry 2022

Silica scaling is one of the major challenges in Reverse Osmosis (RO). The safe operation practice to keep silica concentration below 150 mg/L RO concentrate. This study addresses effects divalent cations such as calcium and magnesium on a seawater installation used pretreatment Eutectic Freeze Crystallisation (EFC). Results showed that absence antiscalant sustained approximately 280 concentrat...

2002
Iqbal K. Bansal

Membrane processes have been successfully employed for treatment of a large number of industrial effluents. Reverse osmosis (RO) and ultrafiltration (UF) are versatile separation and purification tools for the process industries. Both of these techniques are based on the ability of pressure-driven filtration membranes to separate multi-component fluids based on molecular size, shape, and chemic...

The objective of this work was to apply a hybrid process, including electrodialysis reversal (EDR) and reverse osmosis (RO) to the treatment of petrochemical wastewater in order to obtain process water for reuse. A water balance was carried out to defne the main water consumers and the process step that could receive the produced water. Additionally, toxicity assays wer...

Journal: :Desalination 2021

In this work, we use a modified thin film composite RO membrane to examine the impacts of selectivity and compaction on performance pressure retarded osmosis. membranes are promising platforms study PRO because they tolerant typical pressures well characterized for permeance selectivity. Their availability across range (from nanofiltration seawater RO) also allows us systematically investigate ...

K.C. Khulbe, T. Matsuura

Reverse osmosis (RO) is a water purifcation technology that uses a semipermeable membrane to remove ions, molecules, and larger particles for the production of drinking water. The frst RO membrane for seawater desalination, wastewater treatment and other applications were made of cellulose acetate. But, the polyamide thin-flm composite membrane that can tolerate wide pH...

2009
Andrea Achilli Tzahi Y. Cath Eric A. Marchand Amy E. Childress A. Achilli

A novel osmotic membrane bioreactor (OsMBR) is presented. The system utilizes a submerged forward osmosis (FO) membrane module inside a bioreactor. Through osmosis, water is transported from the mixed liquor across a semi-permeable membrane, and into a draw solution (DS) with a higher osmotic pressure. To produce potable water, the diluted DS is treated in a reverse osmosis (RO) unit; the by-pr...

Journal: :Journal of Membrane Science 2022

3D-printing is an emerging method for manufacturing polyamide (PA) reserve osmosis (RO) membranes water treatment and desalination, which can precisely control membrane structural properties, such as thickness, roughness, resolution. However, the synthesis-structure (i.e., degree of cross-linking (DC), m-phenylenediamine/trimesoyl chloride (MPD/TMC) ratio, thickness) to property (permeability w...

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