Canadian Finishing and Coatings Manufacturing: Nov/Dec 2022 - 37

PLATING AND ANODIZING: FILTER SYSTEMS
Carbon treatment tanks require settling tanks and drag-out
filters during the liquid transfer back to the process tanks. High
solids loading filters include large disc, pleated element and high
solids bag configurations.
Sample Testing
Considering the broad variables of process chemistries,
contaminants, volume, flow rate and treatment method, initial
and intermittent lab sampling is necessary to make preliminary
adjustments. Fine tuning system carbon capacity and reaction
time will optimize purification, and acceptable change-out
intervals.
Polishing Filters - High Flow, Low Micron Levels
Polishing filters for capturing carbon and D.E. low micron
particles require high media surface area with retention levels in
the range of five µm absolute or below. Absolute filter ratings are
based on the percentage of particles removed at specific micron
levels with single pass beta testing. Filter media micron ratings
are baseless without corresponding efficiency levels. Increased
media surface area and porosity exponentially extend filter life
by reducing velocities of impacting solids to lower surface layer
density. The necessity of increased surface area is more critical
with low micron levels involving binding and blinding solid
particulates.
Optional filter types include:
*
High flow pleated elements
* Melt blown & pleated DOE & SOE cartridges
* Horizontal discs
High-capacity pleated filters provide high surface area and can
be fitted in tall vertical chambers with reduced footprints. This
approach ensures maximum production yields without infringing
on valuable process area.
Melt blown and pleated cartridges can meet low micron
requirements, but DOE types have multiple sealing points in a
multi-round chamber.
Disc filters can meet low micron requirements but require
more maintenance steps and a larger footprint for the chamber
and dismantling.
Efficiency and Disposal Costs
All process materials exposed to chemical solutions and metallic
contaminants are classified as hazardous waste. Maximizing
process efficiencies to reduce waste volume will lower disposal
costs.
This feature was co-authored by Joseph Warrender, president of
Warco; Gary Gilles, Warco's sales director; and Darrin Hugill,
Warco and Chemtrex engineering manager.
Global Products, Local Service, and Advice You Can Rely On
Service Filtration of Canada is a manufacturer and distributor of industrial
equipment such as: Pumps, Filtration Systems, Filtration Media, and Process
Controls. Since 1988, we have been providing our customers with pumping
solutions, filtering innovations, and superior product lines.
Pumps
Filtration
Media
Heaters
Instruments
ü Improve Profitability
ü Improve Quality
ü Reduce Emissions
ü Reduce Waste
ü Save Energy
ü Low Maintenance
www.service-filtration.com
Passionate about our equipment for over 30 years
(800) 565-5278
sales@service-filtration.com
November/December 2022
37
http://www.service-filtration.com
Canadian Finishing and Coatings Manufacturing: Nov/Dec 2022

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