LWZ LabWasserZentrale – Ultrapure Water Treatment System

Description

Technical Data LWZ EDI:

( LWZ EDI industrial reverse osmosis water treatment system by reverse osmosis )

• 4-stage reverse osmosis water treatment system
• Output 50 / 100 / 150/ 250 liters/h @ 10°C / varies by customer requirement
• Permeate:
  – Conductivity of the product < 0.055 µS/cm > 18.2 MΩ x cm
  – Silicate content < 0.1 ppm
  – TDS < 1 ppm
• Stage 1 reverse osmosis system
• Stage 2 reverse osmosis system
• Stage 3 electrodeionization ( EDI )
• Stage 4 polishing

Stage 1: Reverse Osmosis

• Permeate flow: xxx L/h ( varies by customer requirement ) operating pressure approx. 10 bar
• IEM membrane
• Stainless steel membrane housing
• Stainless steel pump 230V or 400V AC 50/60 Hz

Stage 2: Reverse Osmosis

• Permeate flow: 100 / 150/ 250 /…….. L/h ( varies by customer requirement ) operating pressure approx. x bar
• IEM membrane
• Stainless steel membrane housing
• Stainless steel pump 230V or 400V AC 50/60 Hz

Stage 3: Electrodeionization ( EDI )

To continuously produce ultrapure water, an EDI unit with matching capacity is used.
This technology works via electrodialysis and electrodeionization.

Output: 50 / 100 / 150/ 250

• Conductivity of the product < 0.056 µS/cm > 18.2 MΩ x cm
• Silicate content < 0.1 ppm
• TDS < 1 ppm

Stage 4: Polishing

To guarantee product water quality, Stage 4 is fitted with a so-called polishing cartridge containing lab-grade mixed-bed resin.

This stage serves purely as a quality safeguard with minimal consumption of the mixed-bed resin, since the permeate from the Stage 3 EDI already
has a conductivity of 18.2 MΩ x cm. As a result, mixed-bed resin consumption is significantly lower and lasts much longer compared to conventional systems without EDI and an additional Stage 2 reverse osmosis.

• Mixed-bed resin cartridge
• Diameter 85 mm, height 440 mm
  including adapter with 3/8″ quick fitting
• Lab-grade resin fill

Main Components LWZ EDI:

• Computer controller type ( IEM PLC control )
• Control cabinet with RS232 or USB interface for programming and remote administration via internet
• Operating hours counter
• Aluminum frame
• Automatic flushing system with solenoid valve
• Solenoid valve on the water inlet at Stage 1
• 2x active digital flow transmitter
  (1: product, 1: concentrate )
• 2x active digital pressure transmitter 0-16 bar
  ( inlet pressure, operating pressure )
• integrated conductivity meter
• Remote monitoring option via internet ( requires a DHCP-capable RJ45 network connection )

Interactive touch screen control system

• Monitoring system with PLC computer control

• 1x transmitter, conductivity display on the permeate
• 3x active digital flow transmitter (1: product, 1: concentrate, 1: recycling)
• 3x active digital pressure transmitter 0-16 bar

Additional features:

• Filter-change indicator
• Status display of pressure and flow
• Quality monitoring
• Fault log

Feed Water Quality:

• Max. salt content in feed water 3000 µS/cm ( design basis 750 µS/cm)
• Min. inlet pressure 1 bar feed water
• Temperature 4° C to 30° C
• Feed water quality: 5µ filtered, drinking water
• Maximum free chlorine: 0.1 mg/l
• Hardness in feed water:
  10° dH hardness = 50% recovery
  0° dH hardness = 70% recovery

List of Related Products:

OS2S Ultrapure Water Reverse Osmosis System

OSL2S Ultrapure Water Reverse Osmosis System