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WITH ‘SINTEX’ PACKAGE SEWAGE TREATMENT PLANTS As the untreated se=
wage
across the globe poses serious challenges, the quest for mitigating its
hazardous impacts is also gaining momentum. |
![3D"sbd_photo"](3D"INDIATOWITNESSANEWTRENDINSEWAGETREATMENT1_files/image002.gif")
It
is shocking to know that even in the industrialized countries, sewage is not
treated completely. As per gl=
obal
studies, while North America tops the list with about 90% treatment of the
sewage it produces, the developed European countries comes second with only=
66%
treatment. Asian countries ha=
ve
dismal figure of treating only 25% of the sewage they produce. Nearly 70% of urban population acr=
oss
India and almost 100% of rural population is without central sewage system.=
Let’s take a cl=
oser
look at the issue. Agricultur=
e is
responsible for about 70% of the world’s water usage. Industry uses a further 22%. Only the rest of water is used for
drinking and domestic usage purpose.
As we all know, apart from drinking and food preparation, water supp=
lied
to households is used for many purposes.&n=
bsp;
Drinking portion is very small at a level of only 5 litres per day
person. Bulk of it goes for
bathing, washing, clothes or utensils which is then treated as sludge or gr=
ey
water. Water emerging a=
fter
use in toilets and sanitation is termed as sewage, which is a big source of=
all
types of troubles if not suitably treated.
Domestic sewage conta=
ins
both solid and dissolved pollutants including faucal matter, paper, urine,
sanitary items, food![3D"Package](3D"INDIATOWITNESSANEWTRENDINSEWAGETREATMENT1_files/image004.jpg")
residues and a varie=
ty
of other contaminants. Office=
s,
commercial complexes, hotels and restaurants, educational institutions with
residential facilities also produce sewage in large quantity.
The combined flow from
these various sources goes through the sewer system and ultimately to a
‘sewage works’ where it receives treatment before discharge of =
the
treated effluent to a stream, river, estuary or the sea. Treatment of sewage is essential to
ensure that the receiving water into which the effluent is ultimately
discharged is not significantly polluted. However, the degree of treatment
required varies according to the type of receiving water.
Effectively collecting
and treating sewage is of extreme importance as it reduces the water-borne =
diseases
such as cholera and typhoid.
Efficient sewage treatment and resulting reuse of the treated water =
for
usage like gardening, also ensures less burden on already scarce fresh water
availability.
Unfortunately, accord=
ing
to an international estimate, about 90% of sewage in developing countries is
discharged into rivers or streams without any treatment.
The sewage treatment
situation in India too is disappointing.&n=
bsp;
India is facing a two pronged water crisis; on one hand it is facing
water shortage in many of its areas, and on the other, treating used water
– which can lessen the burden on fresh water – is also getting =
more
and more challenging. Forget =
the
villages, even mega cities and towns of India do not have proper and adequa=
te
infrastructure to properly treat the sewage.
Fortunately, a global=
new
trend is showing a ray of hope.
World over there is now recognition that decentralized sewage treatm=
ent
is a better alternative to a centralized sewage treatment system from the a=
ngle
of investment, energy consumption and efficiency. There are many areas within cities,
towns and villages that are impossible to cover through centralized sewage
treatment system. It has,
therefore, become imperative to evolve decentralized sewage treatment syste=
m,
such as one developed by Sintex, that takes care of pro=
per
treatment and disposal of sewage.
![3D1](3D"INDIATOWITNESSANEWTRENDINSEWAGETREATMENT1_files/image006.jpg")
In most parts of the
world, people are thinking of package sewage treatment plants for communiti=
es
and habitats. These plants are
considered ideal. Even in lar=
ge
cities, use of these plants bring down BOD and COD of sewage to a great ext=
ent
and thereby boost up the capacity of central sewage plant. To illustrate, ‘Sintex’
Package Sewage Treatment Plants bring down BOD to nearly less 30 ppm. When sewage is treated onsite befo=
re
discharge by ‘Sintex’ plants, it enables the central system to
carry nearly ten times more treated sewage than untreated sewage.
‘Sintex’<=
/span> has developed Package
Sewage Treatment Plants from 1,000 litres to 1,50,000 litres capacities, wh=
ich
can very effectively and efficiently treat sewage of single family to around
300 families very comfortably. ‘Sintex’
has taken technical collaboration of Nishihara Corporation and Aqua Nishiha=
ra
Corporation of Japan, who are considered as pioneers in the world for
decentralized/package type sewage treatment plants.
The ‘Sintex’
Package Type Sewage Treatment Systems (PWTS) are compact and can be used in=
a
decentralized manner anywhere for proper treatment of sewage. ‘Sintex’ Package T=
ype
Sewage Treatment is based on anaerobic and aerobic processes and designed to
have dual functions for efficient treatment of domestic sewage from toilets,
bathrooms, kitchen and washing area.
It helps immensely in treating and reusing sewage right where it is
produced.