|
High Activity Carbon (HAC) may be used for a variety of water treatment applications
requiring the reduction of chlorine, tastes, and odors.
Activated Carbon
Clack granular activated carbon is designed
for reduction of tastes, odors and dissolved organic chemicals from municipal and
industrial water supplies. Manufactured in the United States from select grades of
bituminous 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 high and low molecular weight organic contaminants.
One of the most common applications for Clack
High Activity Carbon (HAC) is the reduction of the undesirable tastes and odors present in
many chlorinated water supplies. HAC 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.
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 medium media. HAC has a
surface area of 850 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.
HAC requires periodic backwashing to eliminate
accumulated suspended matter and to re-grade the filter bed. HAC has an extremely high
capacity but must be replaced when the filter bed loses the capacity for reduction of
taste and odor. HAC may be used in either domestic or industrial applications using
gravity flow or pressurized filter vessels.
ADVANTAGES
HAC is an outstanding material for applications requring 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.
HAC is very durable so losses due to attrition are kept to a minimum.
HAC has a very high carbon-low ash content.
Service rates of 5 gpm/sq. ft. are practical for ordinary taste, odor and chlorine
loads.
HAC will impart a high "polish" to the filtered water.
PHYSICAL PROPERTIES
Color: Black
Mesh Size: 12 x 40
Bulk Density: 31 lbs./cu. ft.
Specific Gravity: 1.4-1.5 gm/cc
Effective Size: 0.55-0.75 mm, 0.65 typical
Water Soluble Ash: less than 0.5%
Iodine #: 850 min., 900 typical
Abrasion #: 75 min., 81 typical
Moisture as packed: 2% max., 0.7% typical
Meets American Water Works Association standard B604-96
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 |
 |
Tested and listed under ANSI/NSF
Standard 61 for Health Effects.
|
Drinking Water Treatment System Components Classified by
Underwriters Laboratories Inc.® in Accordance with
Standard
ANSI/NSF 61-(1991)-57Y3
|
|
|
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 performance of our products are
appropriate, by testing with its own equipment.
The information and recommendations given in this publication should not be
understood as recommending the use of our products in violation of any patent or as a
license to use any patents of the Clack Corporation.
The filter medias listed in this brochure do not remove or kill bacteria. Do
not use with water that is
microbiologically unsafe or of unknown quality without adequate disinfection before or
after the system.
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.
|
R&M Manufacturing,
Inc.
