Membrane Electrodes / US Systems / RO Systems

RO System HiSep

TOP > English TOP > Our Products > RO System HiSep

Easy & Economical Operation

Our Reverse Osmosis (RO) System continuously produces DI water for Industrial purposes without regularly recharging the filter element with acidic/basic chemicals.
The RO module clogging can be flushed in-system in the event of clogging. The RO Module is expected to last around 5 years with normal usage.

Download Catalog

PolyTechs RO System Features

  • Easy introduction

    The standard configuration includes automated active carbon filtration and the source water tank. For operation, simply connect the water supply inlet, the RO concentrate and RO permeate outlets.

  • Reusing the concentrate

    The RO concentrate can be used for other processes since chemicals are not used for pre-processing. *This depends on the source water characteristics.

  • In-system module flusing

    The system is designed with in-system RO module flushing capability. Even in the event of module clogging, the flushing mechanism will remove the scale to sustain stable permeate production.

  • Easy Operation
    The simple touch panel interface achieves intuitive and easy system operation. The operation records and system status can be easily accessed and monitored.
  • Easy Maintenance

    Ease of maintenance is give high priority in the system designing process.

  • Use it as Pre-filtering system

    The RO system can be used as a pre-filtering system for ion exchange resin purification systems.

  • Proper testing before introducing

    The source water is tested in the lab prior to and during the system design to ensure expected operation of the DIRO system.

How RO works


In the natural osmotic process, the solvent moves from an area of low solute concentration to an area of high solute concentration via a semipermeable membrane. This happens as the pure solvent is driven to reduce the free energy of the system by equalizing solute concentrations on each side of a membrane, generating osmotic pressure.

Reverse osmosis, reverses this process. By applying high pressure on the high solute concentration side, it reverses the natural flow of the solvent resulting in the solvent moving from the high solute concentration to the low concentration.

RO Module


● RO membrane has 0.0001µm pours which helps to filter the permeate and concentrate.
● In most cases at least 5 years of sustained permeate production in both volume and quality is expected under normal use. *This depends on the source water quality.
● In cases of poor source water quality, appropriate pre-filtering systems can improve the source water to be compatible with the RO module.

Category Specification
RO Inlet Pressure 0.7 ~ 2.5 MPa
RO Outlet Pressure 0.7 ~ 2.5 MPa
Module Type Spiral Type
Membrane Area 7.0m²/module (4 inch)
37m²/module (8 inch)
Operating Temperature 10 ~ 25 ˚C
Permeate Production 2.5 ~ 5.0 L/min・module (4 inch)
10 ~ 20 L/min・module(8 inch)
Membrane Material PA, PVDF
Chlorine Removal Rate Above 99%
Electrical Conductivity below 1/20 of the source water
Recycle Rate 50 ~ 75%

RO System Specification

Category PRO-1-4040 DI PRO-2-4040 DI PRO-1-8040 DI  PRO-2-8040 DI
RO permeate production 150 ~ 250 L/hr 300 ~ 500 L/hr 800 ~ 1200 L/hr 1500 ~ 2400 L/hr
Module Config. 4" x 1 module 4" x 2 modules 8" x 1 module  8" x 2 modules
Power Requirment 1.5 kW  1.5 kW 3.0 kW  3.0 kW
Source Water Quantitiy *Recycle Rate50% : RO permate x 2 
Source Water Pressure 0.2 ~ 0.35 MPa  
*If inlet pressure does not meet requirement levels a special source water supply unit is necessary 
Operating Pressure 0.7 ~ 1.5 MPa
RO Pressure Pump 30 L/min x 120 m 60 L/min x 150 m
Pre-filter Cartridge Type
10µm x 500mm x 1unit
Bag filter Type
element 10µm x 1unit
Active Carbon Filter 30L Auto Flushing 60L Auto Flushing 90L Auto Flushing 150L Auto Flushing
Materials Frame: SS    Pump・Pluming: SUS304・SCS13・PVC
System Dimensions
W650 x L1400 x H1800 W650 x L1400 x H1800 W1100 x L1800 x H1800 W1100 x L1800 x H1800
Additional Options Available:
● Cartridge type ion-exchange filteration unit: less than 1µS/cm
  IRM-25 IRM-50 IRM-75
Resin quantity 25 L 50 L 75 L
RO permeate needed 25 ~ 50 m³ 50 ~ 100 m³ 75 ~ 150 m³

● Auto Sand Filtration unit

Easy Operation & Maintenance

hisep_panel_1.png hisep_panel_2.png ● Clearly indicates the operation status

● Provides easy maintenance of the pre-filtering systems via the auto flushing mode

● Logs operation hours and informs when maintenance is recommended

● Controls operation on the panel with a single touch

hisep_panel_3.png hisep_panel_4.png

RO Flow Diagram