Orient Water Technologies
CASE STUDY
WASTE WATER TREATMENT PLANT
Fo r
BARI TEXTILE MILLS (Pvt.) Ltd.
Capacity: (760 m3/day)
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Introduction:
Bari Textile Ltd, a third-generation
family business, has steadily expanded
its product line and production
capabilities , more than 800,000 sq. feet
of manufacturing facilities, including its
in-house weaving, dyeing, bleaching,
finishing, cut n sew, and distribution
operations.
Bari Textile Ltd , manufacture extensive
selections of textiles, catering to a wide
array of customers. Bari Textile Ltd ,
dominate the global hospitality market
and cotton and polyester products are
used at some of the leading hotels of the
world.
Plant use the same way of production)
and also on the amount of used water.
Also not all plants uses the same
chemicals, especially companies with
a special standard (environmental) try
to keep water cleaned in all steps of
production. So the concepts, to treat
the water can differ from each other.
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Technical Characteristics:
The Plant’s average capacity is 760 m3/day.
The treatment process is capable of
producing product of following
characteristics:
Scope of Work:
The contract included the complete of
equipment,
design,
engineering,
manufacturing, supply, installation,
Civil work, Testing and plant
commissioning.
Having stronghold in the healthcare 3
General Information:
industry. Having products are donned by
The engineered waste water treatment
old age patients as well as
newborns. Major healthcare institutions plant consisted of the following:
across the world are also on our client
-Screening
list.
The textile industry is very water
intensive. Water is used for cleaning the
raw material and for many flushing steps
during the whole production. Produced
waste water has to be cleaned from, fat,
oil, color and other chemicals, which are
used during the several production steps.
The cleaning process is depending on the
kind of waste water (not every
-Equalization
-Neutralization
-Aeration
-Biological Sedimentation
-Sludge Drying Beds
-Screen Channel
There are solids at high range inside the
process water which comes with its
own gravity. These solids firstly pass
through a manual cleaning screen so the
mechanical equipments at the system are
protected and the load of the
system is lightened. The solids which are
kept, are removed together with the
wastes.
-Neutralization
Before taking the wastewater to the
chemical treatment, it is passed
through a FINE SCREEN in order to
keep the fibers inside and to make a
more sensitive filtration. Wastewater
which passes through the biological
treatment.
The efficiency of the screening
operation depends of the spacing
between screen bars:



Fine screening, for a spacing
under 10 mm
Medium screening, for spacing
of 10 to 40 mm
Coarse screening, for spacing of
over 40 mm.
Untreated wastewater may require
neutralization to eliminate either high
or low pH values prior to certain
treatment systems, such as biological
treatment.
Neutralization is a common practice
in wastewater treatment and waste
stabilization.
If a waste stream is found to be
hazardous because of corrosivity,
neutralization is the primary treatment
used. Moreover, neutralization is used
as a pretreatment system before a
variety of biological, chemical, and
physical treatment processes.
-Aeration
-Equalization
Process water which passes through the
screen is taken to the equalization basin
(in order to equalize the wastewater in
terms of flow rate and pollution and to
become homogenous) Wastewater is
given to the system from the
equalization basin to the system.
The purpose of biological treatment is
to remove soluble organics. In the
activated sludge process, micro
organisms (MO) are mixed with the
organics so that they can grow and
stabilize the organics. The system
used for biological treatment is
MIXED AERATION technology.
The process is based on EXTENDED
AERATION, where a considerable
amount of sludge stabilization
occurs already in the aeration tank.
Oxygen for Biological treatment is
provided by blower – diffuser system.
Flow equalization is used to overcome
the operational problems and flow rate
variations to improve the performance of
downstream processes and to reduce the
size & cost of downstream treatment
facilities. To prevent flow rate,
temperature,
and
contaminant -Biological Sedimentation Tank
concentrations from varying widely, flow
After aeration, the wastewater is
equalization is often used.
taken into sedimentation unit.
Here sludge is settled at the
bottom of the tank, whereas top
water overflows the weirs. Some portion
of the settled sludge is recycled, while
the other portion is wasted. The wasted
sludge is collected in the sludge
thickener unit. After biological
treatment, wastewater is discharged.
-Sludge Drying Beds
The facility comprises sludge transfer ,
thickening recirculation , extraction and
drying. Sludge thickeners are provided
having 24 hours storage capacity.
-Plant Control:
The plant is fully controlled by
programmable logic controller .In addition
to the PLC , various instrumentations are
located at different locations in plant to
enable the operator and engineer to properly
monitor and analyze the plant performance.
The monitoring system is rated for
hazardous area and is totally reliable unit
installed in a dedicated control room.
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Orient Water Technologies
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Conclusion:
As a result the waste water treatment plant by Orient Water Technologies managed to improve the performance of
Bari Textile mills (Pvt.) Ltd. , whilst meeting the local environmental regulation
Schematic Flow Diagram