Products | Exergy Sytems Inc.

Technologies

Exergy’s advanced membrane-based systems include Advanced Diffusion Dialysis (DD), Advanced Electrodeionization (AEDI), Membrane Electrolysis (ME), Electrodialysis (ED) and Reverse Osmosis (ARO). The company also provides conventional membrane technologies such as ultrafiltration to complete its designs.

Advanced Membrane Separation Systems

ADVANCED ELECTRODEIONIZATION (AEDI)

Applications:

Direct recovery of electrolytes from active rinses
Recovery and recycling of process water and wastewater in industrial applications

Features:

Clean (electrochemical) technology
Low maintenance
High recovery rate
Low total dissolved solids (TDS) product water
Cost-effective water purification
Option to recycle chemicals
Custom designed for special operations

AEDI devices remove ionizable constituents from water using ion exchange membranes, ion exchange resins, and a DC electric potential. AEDI provides two technologies in one module: electrodialysis and ion exchange.

ADVANCED DIFFUSION DIALYSIS (DD)

Applications:

Direct recovery of electrolytes from active rinses
Recovery and recycling of process water and wastewater in industrial applications

Features:

Uses (5.4% in volume) water to remove continents to central waste treatment or metal recovery
Fully automatic and continuous operation
Chemical resistant membranes that last up to five years for typical applications
Acid feed filtration

Diffusion Dialysis uses ion exchange membranes to recycle used or spent industrial acids. Exergy's patent pending "one piece" membrane spacers create compartments with appropriate cell distances for optimum diffusion.

MEMBRANE ELECTROLYSIS (ME)

Applications:

Purification and regeneration of chromium plating baths
Recycling and maintenance of chrome conversion coating solutions
Reactivation and metal removal from deoxidizing solutions

Features:

Maintains process solutions for consistent performance and quality
Maintains solutions for constant production rates
Accurate, high-quality etching and chrome conversion coating results
Reduces reject rate (reduces reprocessing)
Reduces wastewater treatment and waste disposal
Reduces fresh process solution usage

Membrane Electrolysis is a membrane process driven by an electrolytic potential. It is used for the removal of metallic impurities from metal finishing solutions. ME uses an ion exchange membrane and an electrical potential applied across the membrane.

ELECTRODIALYSIS (ED)

Applications:

Desalination
Direct recovery of process water and electrolytes from stagnant rinses
Purification of plating baths
Demineralization of cheese whey
Removal of nitrates from groundwater

Features:

High efficiency cells
High membrane packing density, thin cells
Low voltage
Excellent distribution
Excellent tightness
High limiting current density

ED systems separate ionic species from aqueous solutions using an applied direct current potential across ion-permeable and selective membranes. Exergy's ED systems feature the ED cell frame, which is optimized to provide high separation performance.

ADVANCED REVERSE OSMOSIS (ARO)

Applications:

Produce high-quality rinse water and recyclable concentrates from wastewater
Closed-loop operation of chrome conversion coating processes
Recovery of plating solutions and rinse water (copper, nickel, and noble metals)
Industrials process wastewater recovery

Features:

Produces high-quality permeates and concentrates for recycling process fluids
0.5-13 pH range of operation
Recycling pump reduces energy use
Operator Interface Unit (OIU) allied auto (PLC) or manual control and provides status information
Pre-assembled modular systems
High-quality, heavy-duty components

Exergy’s ARO achieves superior performance when compared to conventional Reverse Osmosis. ARO operates at 1,000 psi to produce higher concentrations in concentrates and better quality permeates. ARO uses a patented membrane treatment process that allows the process to operate efficiently in a pH range from 0.5 to 13.

Conventional Membrane Separation Systems

REVERSE OSMOSIS (RO)

Applications:

Desalination of process and rinse water
City water and process water purification
COD reduction
Recovery of specialty chemicals with the concentrate

Features:

High-quality pretested membranes
Exacting standards to ensure proper membrane size
Spiral winding of separators using special fabrication techniques
Quality tested using both salt and dye solution
pH range from 2 to 10
High flux even at elevated solid concentration in the feed

ULTRAFILTRATION (UF)

Applications:

Oil/water separation
Water purification
COD reduction
Recovery of specialty chemicals
Hazardous waste remediation

Features:

High quality pre-tested membranes
Exacting standards to ensure proper membrane size
Spiral winding of separators using special fabrication techniques
Quality tested using both salt and dye solutions
pH range from 0-13
Permeate capacity from 60 to 2,220 I/h (16 to 587 gph)

Ultrafiltration is a membrane separation technology that retains target compounds and allows passage of the remaining process solution. Membranes used in Exergy’s UF systems are manufactured from basic plastic polymers to engineer membrane pores of a specific submicron size, typically in the range of 0.0001 to 0.1 micron.

MIRCROFILTRATION (MF)

Applications:

Brine cooker water
Fruit juices
Fermentation broth
Sugar syrups
Metal finishing solutions
Dye rinse water
Well water
Wastewater
Alkaline cleaner

Features:

High quality pre-tested membranes
Exacting standards to ensure proper membrane size
Handles particle sizes between 5 to 0.05 microns
Removes mechanically and chemically emulsified oils, fatty acids, particulates, clay, and bacteria

Microfiltration is a water and suspended solids filtration technology that can be operated as crossflow separation or through perpendicular filtration. Exergy offers many microfiltration options as well as custom systems to meet special requirements

EXERGY SYSTEMS, INC.

Technologies