8
This process occurs when liquid, gas or dissolved or suspended maer adheres to the surface of, or in the pores of, an adsorbent
media. Carbon lters are an example of this type of product.
Materials Used in the NaturalSof 6L Mul-Media Backwashing System. Descripons and cercaons as
follows:
SRI SUPREME GRAVEL PACK #6: Provides base and protecon for boom distributor screen and enhances distribuon of water
through te media layers. NSF/ANSI 61
GARNET # 8 (2.0MM): When used in combinaon with the other lter medias, higher ow rates, higher loading, and beer ltra-
on is achieved. High hardness reduces arion and provides for years of reliable service. An excellent support bed for other
high density medias. Sediment ltraon down to the 10-20 micron range. (the average human hair is about 100 microns in di-
ameter) NSF/ANSI 61
CLINOPTILOLITE, MESH SIZE 14X30 (0.55MM): natural media with a large surface area and microporous structure, which can be
used as a highly ecient lter media for the reducon of suspended maer. Viewed under an electron scanning microscope, the
granules reveal an angular shape, rough surface and microporous void spaces as small as 3 microns. This creates a surface area
over 100 mes greater than silica sand. The angularity of the granules and the tapered internal pore spaces allow for reducon
of dirt, silt and organic maer suspended in water by bridging, straining and adhesion. The rough surface and internal porosity
provide a high surface area for ecient reducon of suspended maer. Ulizing deep bed ltraon can typically reduce sus-
pended solids down to the 5 micron or less range. (the average human hair is about 100 microns in diameter) NSF/ANSI 61
COCONUT SHELL-HIGH ACTIVATED CARBON: granular acvated carbon is designed for reducon of tastes, odors and dissolved
organic chemicals from municipal and industrial water supplies. Manufactured from select grades of coconut shell coal to pro-
duce a high density, durable granular product capable of withstanding the abrasion and dynamics associated with repeated hy-
draulic transport, backwashing and mechanical handling. Acvaon is carefully controlled to produce exceponally high internal
surface area with opmum pore size for the adsorpon of a broad range of low molecular weight organic contaminants and
oxidizing agents like chlorine and ozone. One of the most common applicaons for Coconut Shell-High Acvated Carbon (CS-
HAC) is the reducon of the undesirable tastes and odors present in many chlorinated water supplies. CS-HAC has been success-
ful for many years in the reducon of free chlorine from water supplies. The end product is clean, fresh water with no objecon-
able taste or odor characteriscs. NSF/ANSI 61
HIGH ACTIVATED CARBON (HAC): granular acvated carbon is designed for reducon of tastes, odors and dissolved organic
chemicals from municipal and industrial water supplies. Manufactured 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. Acvaon is carefully controlled to produce exceponally high internal surface
area with opmum pore size for the adsorpon of a broad range of high and low molecular weight organic contaminants. Pri-
mary use in the municipal applicaon is the reducon of chloramine (chlorine and ammonia) and the disinfecon byproducts
caused by chlorinaon. These include chloroform and other trihalomethanes (THMs). NSF/ANSI 61
KDF 55 MEDIA: Designed specically for removing or reducing chlorine and water-soluble heavy metals. Can remove up to 99%
of water-soluble lead, mercury, nickel, chromium, and other dissolved metals. Is eecve in controlling the buildup of bacteria,
algae, and fungi, making it ideal for use in this mixed bed design ltraon. NSF/ANSI Standard 42
1855 Lockeway Drive, Suite 506
Alpharea, GA 30004
