Demineralizer Regeneration Frequency Determination

Routinely, I am asked how long will one of our cation-anion two bed demineralizers operate before it has to regenerate. To determine this, we need to know the flow rate and the inlet water quality.  The flow is generally known, but the water quality generally is not early in a water treatment project.  The easiest way is to use conductivity as a rough approximation of water quality for budget purposes only.  Before a system is purchased, a complete water analysis is required to verify with one of the ion exchange resin sizing programs to purchase the correctly sized demineralizer.

Here are a series of graphs I sent to the prospect to help get a budget determined.  The graphs include run times for a DT36072, DT54072 and a DT60072 dual bed demineralizers from Res-Kem. 

For Additional Information:
Ten Questions to Properly Size a Water Treatment System Including a Deionizer/Demineralizer
Equipment Bulletin for a Res-Kem DT36072 Cation-Anion Demineralizer
Equipment Bulletin for a Res-Kem DT54072 Cation-Anion Demineralizer
Equipment Bulletin for a Res-Kem DT60072 Cation-Anion Demineralizer
Need Technical Help sizing a unit?

DI System Shipping to Washington Chemical Plant

Shipping today is a two bed (cation ion exchange tank followed by an anion ion exchange tank) demineralizer for a chemical plant in Washington State. This unit is a DI60072 and will be used in parallel with several other older systems currently installed at the same plant to increase treated water capacity.

150 gpm Demineralizer Showing NEMA 4X Control Panel with Panel View 300 HMI

The system will use the existing bulk acid and caustic for regeneration of the cation resin and anion resin respectively.

150 gpm Demineralizer Compact Design of Piping

System Design:

Normal Service Flow Rate:	150 gpm
Maximum Service Flow Rate:	230 gpm
Vessel Size:	60" x 72" Diameter x Straight side
Volume of Cation (SAC) Resin	66 cu ft
Volume of Anion (Type 1) Resin	77 cuft
Cation Vessel Internals:	Header Lateral Design PVC Schedule 80
Anion Vessel Internals:	Header Lateral Design 316L SS Schedule 10
Automatic Valves:	Butterfly valves 316L SS disc with Air to Open Spring to Close Actuators
Controls:	Allen Bradley Micrologix PLC Panelview 300 HMI NEMA 4X FRP panel
Instrumentation:	Signet Flow meter Totalizer Thornton Conductivity Meter

Additional Information:
For our complete demineralizer/deionizer product line.
For help sizing a DI system, please contact us.

Downloadable Catalog of Water Treatment Equipment Updated

For 2012, we updated our downloadable industrial water treatment catalog.  (Given the number of equipment choices we provide, the catalog file is very large, so please be patient during the download.)



Res-Kem's Industrial Water Treatment Equipment Catalog for 2012

 In addition to the updated XL, CL and ML Series RO system bulletins list in my previous post, we have updated the two bed demineralizer sections of our catalog to include all of the standard sized DI systems up to 96" in diameter.

To many water treatment system choices?  Contact us for help!

New Two Bed Demineralizer Technical Bulletins

Res-Kem has a complete 2-Bed demineralizer product line designed for industrial water production.  The standard tank sizes range from 18" to 96". 

Two-Bed Demineralizer with
PVC Tank Coating and PVC Face Piping

These two-bed deionizers are designed for fully or semi-automatic production of water with a conductivity of less than 10 micro-ohms and feature:  

• Flow rates from 10 - 220 gpm and capacities from 140,000 - 2,200,000 grains.
• Strong acid 8% crosslinked cation and type 2 strong base anion resins as the standard, with other resins available as an option.
• Microprocessor based control system with conductivity monitor and flow sensor for regeneration initiation.
• Electrical enclosures are NEMA 4XFG corrosion resistant fiberglass, which reduces maintenance costs.
• PVC coated steel vessels depending on size and customer requirements.
• Optional ASME code vessels.
• Factory assembled and skid mounted for quick installation and minimum startup cost.
• Schedule 80 PVC piping package including air operated true union ball valves are standard. Air or electric actuated ball or butterfly valves are available as an option.
• Pressure regulators, rotameters and metering valves supplied for accurate and safe control of regeneration water and chemical introduction.
• Internal distributors are corrosion resistant, designed for optimum efficiency and are fully supported where required.

Technical Bulletins:
The following are the standard system sizes available from Res-Kem:

DI18072	Dual 18-inch diameter demineralizer system
DI24072	Dual 24-inch diameter system
DI30072	Dual 30-inch diameter system
DI36072	Dual 36-inch diameter system
DI42072	Dual 42-inch diameter system
DI48072	Dual 48-inch diameter system
DI54072	Dual 54-inch diameter system
DI60072	Dual 60-inch diameter system
DI66072	Dual 66-inch diameter system
DI72072	Dual 72-inch diameter system
DI78072	Dual 78-inch diameter system
DI84072	Dual 84-inch diameter system
DI90072	Dual 90-inch diameter system
DI96072	Dual 96-inch diameter system

For further information, please contact Res-Kem or call 800-323-1983.

Deionizer/Demineralizer System with Packaged Design Introduced

Res-Kem recently introduced packaged DI Water Systems for Commercial and Light Industrial applications. The OHM-TECH Series two-bed deionizers for commercial and light industrial applications are designed for semi-automatic production of water with a conductivity of less than 10 micro-ohms and feature:

• Flow rates from 1 - 40 gpm
• Ion exchange Capacities from 9,000 - 90,000 grains.
• Strong acid cation and type 1 strong base anion resins.
• Microprocessor based control system with conductivity monitor and flow sensor for regeneration initiation.
• Corrosion resistant fiberglass electrical enclosures which reduces maintenance costs.
• Resin vessels are polyethylene-lined fiberglass.
• ASME code vessels.
• Factory assembly and skid mounting for quick installation and minimum startup cost.
• Schedule 80 PVC piping package using a multi-function hydraulically operated composite valve.
• Metering valves for accurate and safe control of regeneration water and chemical introduction.
• Internal distributors are corrosion resistant, designed for optimum efficiency.

These following facilities are examples of ideal applications for Res-Kem's demineralizer and deionizer (DI) equipment:

• Food and Beverage Processing Plants
• Power plants
• Chemical plants
• Pharmaceutical Plants
• High pressure boiler feedwater
• Manufacturing Plants
• Laboratories
• Autoclaves
• Steam Generators
• Electronic Products
• Medical Device Production
• Alloy Metal Fabrication
• Aerospace
• Humidification Systems
• Metal Treating
• Plating
• Printed Circuit Boards