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Filtration
Multi
Media Filtration
Filtration is either directly or indirectly involved in
water treatment. Being in some cases the only treatment
needed or the first stage of a more complex system.
Scope Of Treatment:
- Removal
of suspended matters, together with organic matters,
turbidity and odors.
- Reduction
of iron and manganese contents.
- Removal
of pesticides and chlorine in derivative in drinkable
water.
Applications:
- Water
treatment for domestic and industrial use.
- Refining
clarified water streaming from clarification-flocculation
stations.
- Tertiary
treatment of waster water plants effluent.
Available
Media:
- Sand
and Gravel:
Highly spherical shape and uniform grading provide
filters with reliable performance.
- Anthracite:
Anthracite is a select coal, mined and processed for
use in water filtration. It is ideal for single bed,
dual bed or multi media bed filtration system.
- Activated
Carbon:
High Activity Carbon (HAC) may be used for variety
of water treatment applications requiring the reduction
of chlorine, tastes and odors.
- Green
Sand:
Green sand is capable of reducing iron, manganese
and hydrogen sulfide from water through oxidation
and filtration.
Micro
Filtration
Cross flow through micro filtration cartridges removes virtually
all suspended matter and hence SDI <1 can be achieved.
Micro filtration is performed as a second step filtration
after multi media filters.
Scope Of Treatment:
- Removal
of suspended matters.
Applications:
- Water
treatment for domestic and industrial use.
- Reverse
osmosis pretreatment.
Ultrafiltration
UF membrane cartridges perform much finer filtration than
micro filters.Ultrafiltration
(UF) is similar to RO and NF, but is defined as a crossflow
process that does not reject ions.
Because of the larger pore size in the membrane, UF requires
a much lower differential operating pressure. UF removes
larger organics, colloids, bacteria, and pyrogens while
allowing most ions and small organics such as sucrose to
permeate the porous structure
Scope
Of Treatment:
- Removal
of colloids, bacteria, and pyrogens.
- Removal
of large organic molecules and microbiological contaminants
Applications
- Treatment
of surface, ground and well water into drinking water
and process water
- Treatment
of waste water into process water
- Pre-treatment
for desalination plants
Nanofiltration
Nanofiltration (NF) equipment removes organic compounds
in lower molecular weight ranges, also rejecting some salts,
and passing more water at lower driving pressures than RO.
NF economically softens water without the pollution of regenerated
systems and provides unique fractionation capabilities such
as organics desalting.
Nanofiltration is used where the high salt rejection of
reverse osmosis is not necessary
Scope Of Treatment:
- Removal
of colloids, bacteria, and pyrogens.
- Removal
of pesticides and other organic contaminants.
- Removal
of hardness elements such as calcium or magnesium.
Applications:
- Treatment
of surface, ground and well water into drinking water
and process water.
- Treatment
of waste water into process water .
- Low TDS
water desalination.
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Softening
Water softener are units which eliminate calcium and magnesium
salts from water, and determinate the hardness of the
water, the treatment is referred to as "water softening"
and consists in replacing said calcium and magnesium salts
(salts which are not easily dissolved) with the corresponding
sodium salts (which are highly soluble).
The process of replacing the salts is performed by using
ion-exchange resins, once they have completed their job,
are "regenerated" using a solution of sodium
chloride; common coarse salt.
The regeneration of the resins can be controlled either
automatically (via timer or on volumetric basis) or manually.
Scope
Of Treatment:
- Removal
of calcium and magnesium salts from water.
- Determinate
the hardness of the water.
Applications:
- Process
water softening for industrial use.
- Water
softening for domestic use.
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