Archives des Reverse osmosis - Pignat.com https://pignat.com/en/product-category/educational-engineering/environment/reverse-osmosis/ Fri, 05 Mar 2021 13:41:43 +0000 en-GB hourly 1 https://wordpress.org/?v=6.7.1 https://pignat.com/wp-content/uploads/2019/01/cropped-Favicon-1-32x32.png Archives des Reverse osmosis - Pignat.com https://pignat.com/en/product-category/educational-engineering/environment/reverse-osmosis/ 32 32 Reverse osmosis https://pignat.com/en/product/reverse-osmosis-2/ Tue, 16 Apr 2019 13:00:36 +0000 http://v2.pignat.com/?post_type=product&p=19585 Reverse osmosis membrane filtration process

Osmosed water production

 

GENERAL SPECIFICATIONS

  • Cylindical tank, 90 L.
  • Removable lid.
  • Coil copper.
  • SS centrifugal pump.
  • Reverse osmosis module.
  • Polymer filament membrane
  • Retentate circuit
  • Permeate circuit
  • SS By-pass circuit

Instrumentation 

  • Level detector.
  • Manometers
  • PVC flowmeters
  • Double probes

 

Dim : 150 x 63 x 195 cm - 125 kg
SS tubular framework 40 x 40mm

 

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Study of the membrane characteristics

Determine the osmotic pressure of water

 

Study the reverse osmosis process for an NaCl solution

Determine how the overall retention of the module varies with the filtration

pressure and initial concentration of the salt solution

Variation in the conversion rate of the membrane

 

Qualitative and quantitative comparison with experimental data

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]]> Osmosis and nanofiltration https://pignat.com/en/product/osmosis-and-nanofiltration/ Tue, 12 Mar 2019 13:52:10 +0000 http://v2.pignat.com/?post_type=product&p=18068 Implementation of two methods for membrane filtration

Industrial membrane type spiral:

Compact with big filtration surface area

GENERAL SPECIFICATIONS

  • Graduated tank.
  • SS multi-stage centrifugal pump.
  • Nanofiltration module: carter in resin and glass fiber, spiral polymer membrane.
  • Reverse osmosis module: carter in resin and glass fiber, spiral polymer membrane.
  • Permeate circuit and retentate circuit.

Instrumentation

  • Manometers.
  • PVC flowmeters.
  • Combined probes (conductivity and temperature) with electronic indication.
  • SS flowmeter magnetic transmitter.

 

Dim : 285 x 100 x 190 cm - 250 kg
SS tubular framework 40 x 40mm

 

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Study of the characteristics of membranes

Research of osmotic water

 

Study of the two methods for a NaCl solution

Research of the evolution of the overall retention of the modules depending on pressure

filtration and the initial concentration of the salt solution

Evolution of the rate of conversion of the membranes

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]]> Desalinization by reverse osmosis https://pignat.com/en/product/desalinization-by-reverse-osmosis/ Tue, 12 Mar 2019 13:40:00 +0000 http://v2.pignat.com/?post_type=product&p=18071 Reverse osmosis membrane filtration

Desalinization process

GENERAL SPECIFICATIONS

  • Cylindrical feed tank in PE.
  • Reverse osmosis module

High pressure carter.

 Spiral type membrane

  •  High pressure gear pump.
  • Graduate permeate tank with removable lid.
  • Graduate retentate tank.
  • 2 beakers 1 L for sampling.

Instrumentation

  •  Flowmeters
  • Manometers.
  • Level sensor.
  • Combined probes (conductivity and temperature) with electronic indication.

 

Dim : 210 x 70 x 180 cm - 150 kg
SS tubular framework 40 x 40mm

 

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Osmosis and reverse osmosis

Osmosis entails transferring a solvent (generally water) through a semi-permeable membrane due

to the action of a difference in concentration. The transfer is complete when the two concentrations are

equal and equilibrium is reached.

If a pressure is applied on the surface of the concentrated salt solution, the solvent flow reduces to zero.

This pressure applied to cancel out the solvent flow is known as the osmotic pressure.

If the pressure applied is greater than the osmotic pressure, the solvent flow is reversed.

The phenomenon is the principle behind reverse osmosis filtration. A concentrated salt solution circulates

at high pressure over the surface of a membrane.

The solvent (pure water) passes through the membrane, forming the permeate; the solution is depleted in

solvent and leaves the module with a higher salt concentration, resulting in the concentrate

 

Study of essential parameters of the osmosis process

The osmotic pressure of the water

The permeability of the membrane

The rejection and conversion rate of the reverse osmosis module

 

Optimization of a process of osmosis

Determination of the operational conditions ideal for attaching the amount and quality of the permeate

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]]> Reverse osmosis https://pignat.com/en/product/reverse-osmosis/ Tue, 12 Mar 2019 13:32:14 +0000 http://v2.pignat.com/?post_type=product&p=18076 Reverse osmosis membrane filtration process. Osmosed water production

 

GENERAL SPECIFICATIONS

  • Graduated tank.
  • SS multi stage centrifugal pump.
  • Reverse osmosis module: casing, polymer filament membrane.
  • Permeate circuit: sampling valve, flow rate measurement and polyethylene storage tank, graduated.
  • Retentate circuit: sampling valve, pressure retaining valve, graduated storage tank.

Instrumentation

  • Manometers.
  • PVC flowmeters
  • Combined probes (conductivity and temperature) with portable electronic indication.

 

Dim : 200 x 80 x 195 cm - 125 kg
SS tubular framework 40 x 40mm

 

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Study the reverse osmosis process for water and various NaCl solutions

Determine the osmotic pressure of water

Van ’t Hoff equation

Determine how the overall retention of the module varies with the filtration pressure and initial Concentration of the salt solution

Variation in the conversion rate of the membrane

 

Qualitative and quantitative comparison with experimental data

Material balance

Influence of pressure on osmosed water production rate

 

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