MIDWEST RO
reverse osmosis systems

 

MIDWEST RO
reverse osmosis systems

Reverse Osmosis is a membrane separation process wherein purified water is extracted by using synthetic membranes which are permeable to water molecules but relatively non-permeable to contaminants. The raw water stream is first pressurized to reverse the natural osmosis process that occurs across the semi-permeable membranes.

The ROS-100 System is a reverse osmosis module designed for large industrial applications. Each ROS module utilizes 8 inch diameter spiral wound membranes, housed in fiberglass vessels producing a capacity of 100 G.P.M. The modular design allows for easy expansion.

The ROS-100 is a free standing system designed and engineered for ease of maintenance and operation. Solid state controls provide continuous monitoring of all critical parameters in addition the system will automatically stop the system when conditions are not within preset limits, i.e. low suction pressure, high product conductivity. Instrumentation includes liquid-filled pressure gauges; product and concentrate flow meters; and a conductivity meter to measure product water quality.

PUMP PACKAGES
Pumps are selected according to the number of ROS-100 modules. The pumps are stainless steel centrifugal
type with integral 3- phase, 60hz or 50hz, (optional) TEFC (totally enclosed fan cooled optional) motors.

STANDARD FEATURES
• Flow Rates of 100 gpm
• Product and Concentrate Flowmeters
• Solid State Controller
• PLC (AB) controller
• Low Suction Pressure Switch and Shutoff
• High Pressure Speed Switch and Shutoff
• Liquid-Filled Pressure Gauges for the Pumps, Discharge, Membrane, Secondary Feed, Permeate and Concentrate Pressure Gauges.
• High Product Conductivity Monitor
• Product Storage Level Connection and Shutoff
• 1 Micron Pre-Filter
• Flush system
• Conductivity Analyzer
• Digital Totalizing Flow Meters
• Cleaning Station
• Stainless Pump
• Chemical Feed
• Stainless piping
• Stainless frame

CONTROLLER INDICATION
• Low Suction Pressure
• High Product Conductivity
• High Tank Level
• High Permeate Flow
• Low Concentrate Flow

MEMBRANE SPECIFICATIONS
Membrane Type.....Thin-Film Composite(1)
pH Range..................2-11
Chlorine Tolerance..less than 0.1 ppm
Max. Operating Temperature 185 F
Average..................99.0% (3)

1. Specifications at 934 psi, 77 F (25 C)
32,000 ppm NaCL and 10% recovery
2. Specifications at 420 psi, 77 F (25 C),
2000 ppm NaCL and 10% recovery
3. For higher rejection rates consult Daico Water Management

Unitized Frame Mounted................................Yes
Design Flow Per Pump....................................150 gpm
Design Discharge Pressure.............................220.0 psi
Number of Pumps.............................................1 Each
Pump Construction...........................................Stainless Steel
Pump Mounting................................................Close Coupled
Pump Type....................................................... Centrifugal
Pump Suction/Discharge Size.......................... 2 ½ " Flange
Motor Horsepower......................................…...30-40 HP TEFC
Magnetic Starter With Heater Coils.................NEMA 4 Enclosure
Manifold Suction/Discharge............................. 2 ½ " inch
Suction Valve Type............................................Ball Valve
Discharge Valve Type.......................................Stainless Ball Valve
Discharge Check Valve Type............................Ball
Pressure Gauges................................................6 Each, SS 316
Low Pressure Switch........................................1 Each, SS 316
Stainless piping ………………………………. All
Stainless Frame ………………………………. Total