Would you like more information on the new Culligan IW Reverse Osmosis syste, simply click here. Permanent and temporary systems, membranes, profiling & normalization, cleaning, maintenance, chemicals, temporary services. Systems sized from customer's capacity requirements. Turnkey engineering and water treatment systems where reverse osmosis works with water softening, filtration, deionization, ultraviolet and more.
The Culligan E2 Series RO - The E2 Reverse Osmosis System is an economical water treatment solution, which reduces operating and post treatment costs.
M1 Series RO - The M1 Reverse Osmosis System is a cost effective water treatment solution with enhanced features, which help reduce operating and post treatment costs.
M2 Series RO - The M2 Reverse Osmosis system is a flexible, expandable configuration customized to help meet your most demanding and exacting consumption needs. Manage the reverse osmosis system using an easy-to-reach electronic controller that automates when to get the quantity and quality of water based on your specific requirements.
G1 Series RO - When you install a G1 Reverse Osmosis system, you combine cost-effective system configuration, cost-minimizing operations, and reduced post-treatment costs.
G2 Series RO - Culligan makes it simple to manage your water for drinking and industrial processes. The G2 Reverse Osmosis system is a flexible, expandable configuration customized to help meet your most demanding and exacting consumption needs.
G3 Series RO - No limits for your water quality regardless of quantity—the Culligan G3 Reverse Osmosis system processes water to help meet your most demanding and exacting industrial requirements. The durable reverse osmosis membrane processes large volumes while reducing water waste; you can manage the system using a touch panel electronic controller.
GE E4 Series RO - GE's E-series RO machines are designed for durable operation, high quality product water production, easy installation and straightforward control. The E4-LE RO Series has slightly different specifications, operating parameters and materials of construction.
GE Industrial Series RO - Industrial High Pressure Brackish Water RO Elements
Culligan Reverse Osmosis System Application
A major beverage plant was looking to reduce the impact of its operations on the environment while meeting the water treatment challenges at its facility. The sustainability goals of the facility included reducing water usage and energy costs associated with its operations. Read the details about Culligan Matrix Solutions' sustainable approach.
GE’s Reverse Osmosis System Helps Unilever Reduce Water, Natural Gas Consumption and Chemical Usage
In the face of rising and unpredictable energy prices, the ongoing campaign to improve energy efficiency is necessary for the Unilever plant in Rexdale, Ontario to remain competitive. The Rexdale plant consumes huge quantities of energy for the annual production of 185 million pounds of margarine and other vegetable-oil products, and energy expenditures represent 15% of all production costs. The RO system not only softens and purifies municipal water, but it also re-uses process water captured throughout the plant for use as boiler make-up, significantly reducing the consumption of municipal water. Read about the success story here.
For a more detailed description of the GE products we work with please view the GE Product Catalog.
What quality of water is required?
Resistivity, conductivity, PPM, TDS, Particulates, Plate Count, Ohms, Mhos, microsiemens, etc. All quality issues must be known.
Is there a Bacteria Spec?
Is there a TOC Spec?
Is there an endotoxin Spec?
Is there a TDS Spec?
Is there an ohm’s resistivity spec? Or conductivity?
If you want “just PEDI mixed bed water” what does that mean specifically in quality? 18Meg? 10 Meg? 200K? Etc. What is the minimum/maximum resistivity, conductivity, (see all above points)
Is the application batch or continuous or sporadic?
If batch, how much per batch? How many batches per day/week/month?
If continuous, is this 8 hpd/24/7/365 or sporadic?
How many points of use are there? Are there different qualities needed at each point? Is recirculation needed at one or more points to keep the quality up?
Is an RO storage tank necessary?
How critical is it if the RO goes down? Is redundancy needed or extra pumps?
Future expansion? Piping issues, space issues, cement pad issues, pre-treatment issues, and storage issues?
If so, what size, and where is it put? (before PEDI or after?)
How about bacteria issues in the storage tank? This begs recirculation and UV issues?
Repressurization pump after RO storage. Need flow rate of product water to batch, size of piping to batch, length of piping and quality of piping.
Minimum – maximum flows, channeling, peaks, continuous. All necessary discussions. Possible recirculation for proper flows.
Is the RO gpm need based on what? 77° or 60°, or 55° or 52° - or how is this determined?
What is incoming water pressure? Will there need to be a pre-booster pump?
Has an SDI test been done on site? This is critical for membrane fouling issues and operational issues including flux rate and proper RO sizing.
Has there been osmotic back pressure discussions?
Is CO2 an issue – as membranes won’t remove CO2 and DI’s may exhaust prematurely.
PEDI questions – 9” vs. 12” vs. 14” vs. dual bed SB, pre-treatment vs. in-series PEDI MB.
Monitoring water at all points – is there a system to shut equipment down when quality drops below spec?
Has EDI been brought up?
Are there auto-DI discussions? Neutralization, chart graphing, MPCA issues, separation, recirculation, quality control.
Space requirements for total system VS what is available? This includes floor footprint, height, doors, docks, stairs, piping in the way, hoists, lifts.
Power and drain requirements? For all components.
Pretreatment needs – Depth filters, softeners, iron filters, carbons, 10 micron, UV, feeders.
Are we truly the sole source?
How long will membranes last? At what % rejection will they need to be replaced / cleaned?
Clean in place skid – is it required?
These are only some of the questions to ask depending on the application. We could write down 35 more for other apps.
and many more!
Membrane System Feed Specifications
Typical RO and NF feed water requirements:
|SDI(15):||< 5.0 better < 3|
|Chlorine (free):||< 0.01 ppm (PA)|
|Iron:||< 0.1 ppm|
|Turbidity:||< 1.0 NTU better < 0.2|
|TOC:||< 3 ppm|
|Silica:||< 40 ppm (without antiscalant)|
Membrane Chemical Offering
The SDI or silt density index is a measure for the fouling capacity of water in reverse osmosis systems. The test measure the rate at with a 0.45-micrometre filter is plugged when subjected to a constant water pressure of 206.8 kPa (30psi).
Did you know that qualitatively, SDI is proportional to particulates and junk going through your membrane elements. A less efficient system costs you money! Save money with ROsave. Patented GE technology on depth filtration media engineered specifically for the highest degree of protection. This product offers low-pressure drop, high particle/dirt capacity which combines to deliver long life and the optimum protection of high performance membrane elements.
Typical Properties of Source Waters
|River||High, with seasonal variation||Moderate||Moderate to High||Low||> 5|
|Lake/Pond||Low, with seasonal variation||High, with seasonal variation||High||Low||> 5|
|Well||Low||Low||Moderate||Low to high||< 5|
|Municipal||Low to moderate||Low||Low to moderate||Low to moderate||> 5 or < 5|
|Brackish||Low||Low||Low to moderate||Moderate to high||> 5|
|Seawater||Low to moderate||Low||Low||High||> 5|
Definition of Characterization
|TDS -ppm||10-150||150-2500||>2500 - Brackish|
|Water Source||Critical Water Parameter||Suggested Treatment Equipment|
|River||NTU > 25*||Clarifier* + MMF or UF/MF|
|NTU 10-25||MFF or UF or MF with Coagulant|
|NTU < 10||MMF or UF or MF (Coagulant may be needed)|
|Surface water lake||Hard water and TOC||Lime softener + Clarifier MMF|
|NTU > 25*||Clarifier* + MMF or UF/MF|
|NTU < 25||MMF or UF/MF|
|Well Water||Iron and manganese||Chlorination + MMF / Greensand Filter|
|NTU < 10||MMF or UF/MF|
|Brackish Water||NTU > 10||MMF|
|NTU < 10||UF/MF or MMF|
|Sea or Ocean||NTU > 50||Clarifier* + MMF|
|NTU < 50||UF or MF - Check with MF suplier|
|NTU < 25||UF/MF|
TOC=Organics, MF= Micro filtration, UF=Ultrafiltration, MMF= Multimedia Filters
*Total suspended solids greater than 100mg/L require clarification
Effects of Water Temperature
High Temperature (25-30 C)
- Design For Lower Pressure = Smaller Pump
- Warm water has lower viscosity
Lower Temperature (<20 C)
- Design For Higher Pressure
- Large Pump
- LE Elements (CW Option)
- Cold water has higher viscosity
Does your water temperature change +/- 10 C or more?
Adjust pressure to maintain consistent permeate Flow Variable Frequency Drive (VFD).
|Foulant / Scale||Pretreatment and Cleaning|
|Calcium Carbonate||Control with pH reduction and/or anti-scalant. Easy to clean|
|Calcium Sulfate||Control with anti-scalant. Difficult to clean.|
|Barium Sulfate||Control with anti-scalant. Impossible to clean.|
|Strontium Sulfate||Control with anti-scalant. Difficult to clean. Not Common.|
|Calcium Phosphate||Control with anti-scalant and pH reduction. Easy to clean.|
|Iron||Assuming No Oxidation (Air, CI2). Control with anti-scalant. Easy to clean.|
|Manganese||Assuming No Oxidation (Air, CI2). Control with anti-scalant. Easy to clean.|
|Aluminum||Control with pH reduction and anti-scalant. Easy to clean (not Aluminum Silicate).|
|Silica||Assuming no colloidal silica. Control with anti-scalant. Adjust the pH up or down can help. Impossible to clean.|
|Turbidity||Prefer < 0.2 NTU, 1.0 Max|
|SDI15||Prefer < 3, Up to 5 accepted|
|Iron||< 0.05 ppm|
|Manganese||< 0.05 ppm|
|Aluminum||< 0.1 ppm|
|TOC||< 3 ppm|
|Silica||< 40 ppm|
|pH||TFC (5.0 - 9.0)|
|Temperature||55-85F (12.7 - 30C)|
|LSI||Run anti-scalant program|
|Barium||Run anti-scalant program|
|Strontium||Run anti-scalant program|
|Phosphate||Run anti-scalant program|