Granular Activated Carbon (GAC) may be used for a variety of water
treatment applications requiring the reduction of chlorine, tastes and odors.
Granular Activated
Carbon (GAC)
Clack granular activated carbon is
designed for reduction of tastes, odors
and dissolved organic chemicals from
municipal and industrial water supplies.
Manufactured in Sri Lanka from select
grades of coconut shell coal to produce
a high density, durable granular product
capable of withstanding the abrasion
and dynamics associated with repeated
hydraulic transport, backwashing
and mechanical handling. Activation
is carefully controlled to produce
exceptionally high internal surface area
with optimum pore size for the adsorption
of a broad range of low molecular weight
organic contaminants and oxidizing agents
like chlorine and ozone.
One of the most common applications
for Clack Granular Activated Carbon
(GAC) is the reduction of the undesirable
tastes and odors present in many
chlorinated water supplies. GAC has been
successful for many years in the reduction
of free chlorine from water supplies. The
end product is clean, fresh water with no
objectionable taste or odor characteristics.
ADVANTAGES
• GAC is an outstanding material for
applications requiring taste, odor
and dissolved organic chemical
removal from water with suspended
matter present. This product can be
used for filtering waters having a
wide range of pH levels.
• Large surface area results in an
exceptionally high capacity and
efficiency.
• Balanced pore structure gives a
more efficient adsorbtion range.
• GAC is very durable so losses due to
attrition are kept to a minimum.
• GAC has a very high carbon-low ash
content.
• Service rates of 5 gpm/sq. ft. are
practical for ordinary taste, odor and
chlorine loads.
• GAC will impart a high “polish” to
the filtered water.
To obtain maximum efficiency of the
activated carbon in the adsorption process,
it is desirable to have the greatest possible
surface area in the smallest practical
volume. This is necessary because the
rate of adsorption is proportional to the
amount of surface area of the adsorbing
media. GAC has a surface area of 1,050
square meters per gram. This results
in high efficiency and greater system
economy. Clack has for many years
provided activated carbon to the OEM and
replacement market as a pre-treatment for
other water purification systems as well as
for use in individual treatment equipment
for the removal of specific impurities.
GAC requires periodic backwashing to
eliminate accumulated suspended matter
and to re-grade the filter bed. GAC has
an extremely high capacity but must be
replaced when the filter bed loses the
capacity for reduction of taste and odor.
GAC may be used in either domestic or
industrial applications using gravity flow
or pressurized filter vessels.
PHYSICAL PROPERTIES
• Color: Black
• Mesh Size: 12 x 40
• Bulk Density: 28 lbs./cu. ft.
• Effective Size: 0.55-0.75 mm
• Ash Content: 2.5%
• Iodine Number: 1,000 mg/g
• Moisture as packed: 3%
• pH 10
CERTIFICATIONS AND APPROVALS
• ANSI/AWWA B604-05
• EN12915
• NSF/ANSI Standard 61
CONDITIONS FOR OPERATION
• Water to be filtered should
preferably be free of oil and
suspended matter
• The water to be filtered should be
relatively free of iron and turbidity
for maximum service life
• Water pH range: wide range
• Bed depth: 26-30 in.
• Freeboard: 50% of bed depth (min.)
• Service flow rate: 5 gpm/sq. ft.
• Backwash flow rate: 10-12 gpm/sq.
ft.
• Backwash bed expansion: 30-40%
of bed depth
• Upon installation, backwash to
remove carbon fines before placing
unit into service



Service
Flow
Pressure
Drop








  
  
  
Pressure
Drop








(Pounds per Square Inch/Foot of Bed Depth)
 

 
  





Backwash
Expansion
 RE
 
TU )
 A
 R
 °C

 E (4

)
 P F    °C
M 0°  6
)
 E
 
(1
°C

T 4 


F
7
 60° (2


F


°
 80

 







(Percent
of
Bed
Depth)
 

 

 

 

 

      
     
 


  
 
 





Flow
Rate










 

 

 

 

 

Flow
Rate




 Foot of Bed Area)
(Gallons
per Minute/Square

 

 

 





 



 
 




 
  
  


 

(Gallons
per Minute/Square
of
Bed Area)

 

 
Foot
 


Dechlorination
Water
(pH
7,
21°C)

of









  Cl
 2PPM

Influent


  

 





 
 

 




 

 

 


 

  

 













 

 


 

 

 

TE 
MP

E

40 RA

°F(4 TUR
  
° 
) E
 C
60

°F 
16
80 (
°C
°F
(2  )
7° 
C)



 
 






Backwash
Bed
Expansion






Certified
to NSF/ANSI
Standard 61
Certified
to to
ANSI/NSF
Certified
ANSI/NSF
Certified to ANSI/NSF
Standard
61 61
Standard
Standard
61 Carbon
Granular
Activated
is
manufactured
by
Granular
Activated
Granular
Activated
Granular
Activated
Jacobi
Carbons,
Inc.
Carbon
is
manufactured
Carbon is
is manufactured
manufactured
Carbon
by by
Calgon Carbon
Corp.
by Calgon
Calgon Carbon
Carbon Corp.
Corp.
 
   

 
  

    
  
 


  
  










Million
Gallons
per
Cubic
Foot





ORDER
INFORMATION
ORDER
INFORMATION
ORDER
INFORMATION
Part
No.
Description
Part
No.
Part
No. Description
Description
Part
No.
Description
A8009-14
GAC
xx 40
mesh
A8009-12
HAC
1212
x 40
mesh
A8009-12
HAC
12
40
mesh
A8009-12
HAC
12
x 40
mesh
*Weight
per
cubic
foot
is
approximate.
*Weight
per
cubic
foot
is
approximate.
*Weight
per
cubic
foot
is
approximate.
*Weight per cubic foot is approximate.
   
 
  
Cu.
Ft./Bag
Cu.
Ft./Bag
Cu.
Ft./Bag
Cu.
Ft./Bag
1 1
1
1
Wt./Cu.
Ft.*
Bags/Pallet
Weight/Pallet
Wt./Cu.
Ft.*
Wt./Cu.
Ft.* Bags/Pallet
Bags/Pallet Weight/Pallet
Weight/Pallet
Wt./Cu.
Ft.*
Bags/Pallet
Weight/Pallet
lbs.
70
2010
lbs.
3128
lbs.
70
2220
lbs.
31 lbs.
lbs.
70
2220
lbs.
31
70
2220
lbs.
Pallet
Dimensions
Pallet
Dimensions
Pallet
Dimensions
Pallet
Dimensions
38”
x
xx 70”
50”
x
45”
x 60”
50” xx 46”
45”
60”
50”
45”
x 60”
The information and recommendations in this publication are based on data we believe to be reliable. They are offered in good faith, but do not imply
any warranty or performance guarantee, as conditions and methods of use of our products are beyond our control. As such, Clack makes no express
or implied warranties of any kind with respect to this product, including but not limited to any implied warranty of merchantability or fitness for a
particular purpose. We recommend that the user determine whether the products and the information given are appropriate, and the suitability and
4462
Duraform
Lane
4462
Duraform
Lane are subject to change without notice.
performance of our products are appropriate, by testing with
its own
equipment.
Specifications
Windsor, Wisconsin 53598-9716 USA
Windsor,
53598-9716
USA
The information and recommendations given in this
publicationWisconsin
should not be understood
as recommending
the use of our products in violation of any
Phone
(608)
846-3010
patent or as a license to use any patents of the Clack Corporation.
Phone
(608)
846-3010
(608)
846-2586
Fax
(608)
846-2586
The filter medias listed in this brochure do not remove or killFax
bacteria.
Do not
use with water that is microbiologically unsafe or of unknown quality
without adequate disinfection before or after the system.Sales
Fax
(800)
755-3010
Sales
Fax
(800)
755-3010
Form
No. 2348
Form
2348
Form No.
No.
2348
Clack
will
not&be
liable
Replaces
Form
1795
1564
Replaces
Form
Replaces
Form 1795
1795 &
& 1564
1564
Updated
3/01
of
our products.
Updated
3/01
Updated
3/01
Sales Fax (800) 755-3010
www.clackcorp.com
under any circumstance for consequential
or incidental damages, including but not limited to, lost profits resulting from the use
www.clackcorp.com
TheThe
information andand
recommendations in this
publication areare
based on on
data wewe
believe to be
reliable. They
are offered
in good
faith, butbut
do notnot
imply
The information
information and recommendations
recommendations in
in this
this publication
publication are based
based on data
data we believe
believe to
to be
be reliable.
reliable. They
They are
are offered
offered in
in good
good faith,
faith, but do
do not imply
imply
anyany
warranty
or or
performance
guarantee,
as as
conditions
andand
methods
of use
of our
products
areare
beyond
ourour
control.
As As
such,
Clack
makes
no no
express
or or
warranty
performance
guarantee,
conditions
methods
of use
use
of our
our
products
beyond
control.
such,
Clack
makes
express
any warranty
or performance
guarantee,
as conditions
and methods
of
of
products
are beyond
our control.
As such,
Clack
makes
no express
or
implied
warranties
of
any
kind
with
respect
to
this
product,
including
but
not
limited
to
any
implied
warranty
of
merchantability
or
fitness
for
a
particular
implied warranties
warranties of
of any
any kind
kind with
with respect
respect to
to this
this product,
product, including
including but
but not
not limited
limited to
to any
any implied
implied warranty
warranty of
of merchantability
merchantability or
or fitness
fitness for
for aa particular
particular
implied
purpose.
We recommend
that thethe
user determine
whether thethe
products andand
the information
given areare
appropriate, andand
the suitability
and performance
of
purpose.
purpose. We
We recommend
recommend that
that the user
user determine
determine whether
whether the products
products and the
the information
information given
given are appropriate,
appropriate, and the
the suitability
suitability and
and performance
performance of
of
ourour
products
areare
appropriate,
by by
testing
with
its its
own
equipment.
Specifications
areare
subject
to change
without
notice.
products
appropriate,
testing
with
own
equipment.
Specifications
subject
to change
change
without
notice.
our products
are appropriate,
by testing
with
its own
equipment.
Specifications
are subject
to
without
notice.
TheThe
information andand
recommendations given
in thisthis
publication should
not be be
understood as as
recommending thethe
use of of
our products
in violation
of
The information
information and recommendations
recommendations given
given in
in this publication
publication should
should not
not be understood
understood as recommending
recommending the use
use of our
our products
products in
in violation
violation of
of
anyany
patent
or or
as as
a license
to to
useuse
anyany
patents
of of
thethe
Clack
Corporation.
patent
license
patents
Clack
Corporation.
any patent
or as
aa license
to use
any patents
of the
Clack
Corporation.
TheThe
filter medias
listed in this
brochure do do
notnot
remove
or or
kill bacteria.
not useuse
with
water thatthat
is microbiologically
unsafe
or of unknown
quality
bacteria.
Do
with
is
unsafe
DURAFORM
• Do
WINDSOR,
WISCONSIN
53598-9716
USA
The filter
filter medias
medias listed
listed in
in this
this brochure
brochure do4462
not remove
remove
or kill
killLANE
bacteria.
Do not
not use
with water
water that
is microbiologically
microbiologically
unsafe or
or of
of unknown
unknown quality
quality
without
adequate
disinfection
before
orphone
after
thethe
system.
without
adequate
disinfection
before
or
after
system. fax (608) 846-2586 sales /customer service fax (800) 755-3010
(608)
Form No. 2820 • 8/13/2008
www.clackcorp.com
without
adequate
disinfection
before
or
after
the846-3010
system.
Clack
willwill
notnot
be be
liable
under
anyany
circumstance
forfor
consequential
or or
incidental
damages,
including
butbut
notnot
limited
to, to,
lostlost
profits
resulting
from
thethe
useuse
Clack
liable
under
circumstance
consequential
incidental
damages,
including
limited
profits
resulting
from
Clack
will not
be liable
under
any circumstance
for consequential
or incidental
damages,
including
but not
limited
to, lost
profits
resulting
from
the use
of our
products.
of our
our
products.
of
products.