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| Chemplast Sanmar Ltd |
| Environment protection measures |
| Chemplast investments approach Rs.50 crore |
|
|
| Pollution abatement measures and development
of green belts around all its facilities have been a continuous
process at Chemplast Sanmar over the years. Equal attention
is paid to minimising the toxicity of effluents through the
use of appropriate technology and controlling the emission of
particulate matter that could harm the ambient air. |
| Substantial investments exceeding Rs. 43 crore
have been made in the last five years in pursuit of a cleaner,
greener environment. More initiatives costing Rs. 4.5 crore
are in the pipeline. |
| The Oxychlorination plant installed in 2000
at Mettur enables the gainful of the by-product Hydrogen Chloride
in the VCM Plant. It uses HCl instead of chlorine for the manufacture
of Ethylene Dichloride, used in manufacture of PVC. |
| A state-of-the-art incinerator is used for
the complete destruction of waste chlorinated hydrocarbons,
Chloromethanes and Chloroethanes, generated in the manufacture
of PVC. The stack emission in the incinerator meets international
standards. |
|
| Bio-composting facilities have been installed
to manufacture environment friendly biomanure from the liquid-spent
wash from the distillery at the company’s industrial alcohol
distillery at Panruti. The wash is combined with pressmud from
the solid waste stream of sugar mills. |
| Making bio-manure available in large quantities
from the alcohol plant has far-reaching consequences on the
environment front as its use helps in preserving and enhancing
soil quality and eliminating residual chemical fertiliser in
the agricultural crops produced. |
| Continuous fermentation technology is applied
to convert sugarcane molasses to Industrial Alcohol. It is not
only energy-efficient but also aids in eliminating solid waste
generation by enabling complete yeast recycling. In-house process
improvements have enabled further reduction in effluent generation
at source. |
| The secondary chlorine liquefaction plant,
installed in 1998 to increase chlorine liquefaction efficiency
to a high 98%, is the first of its kind in India, based on German
knowhow. |
| The covered salt storage sheds prevent salt
being washed away during heavy rains and percolating into the
subsoil. |
|
| Chemplast investments in pollution
control and environment protection |
|
Rs. in crores
|
| In the last 5 years |
| |
Oxychlorination plant |
23.06
|
| |
Incinerator |
8.16
|
| |
Bio-composting at Alcohol Distillery |
7.21
|
| |
Secondary liquefaction system |
4.57
|
| |
Salt storage shed |
0.42
|
| |
Chlorine monitors |
0.10
|
| |
Total (A) |
43.52
|
| For the next two years |
| |
Reverse osmosis (RO) plant |
0.85
|
| |
Sewage treatment plant |
0.65
|
| |
Rainwater harvesting |
0.33
|
| |
Other environment improvement
related schemes |
0.71
|
| |
Complete recycling of mercury
bearing effluent, treatment of cell room ventilation gas and
installation of mercury distillation units in Caustic Chlor
business |
1.85
|
| |
Total (B) |
4.39
|
| Grand total (A+B) |
47.91
|
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| Thirteen chlorine monitors with recording
facilities have been installed at strategic locations inside
the plants to monitor the chlorine in the ambient air. |
| In strict conformity with Ministry of Environment
and Forests (MOEF) guidelines, all the mercury-bearing brine
sludge generated since the commissioning of the Caustic Chlor
plant has been disposed of in securely capped impervious pits. |
| Monitoring borewells have been dug around
the dumpsite and water samples drawn periodically from these
wells and analysed, for the continuous monitoring of these pits.
The entire mercury present in the brine sludge is stabilised,
fixed and immobilised by the addition of sodium sulphide to
convert the mercury into mercuric sulphide, the basic ore of
mercury. |
| A mercury removal unit has been installed
to recover and recycle the mercury present in the mercury-bearing
liquid effluent, ensuring Below Detectable Levels (BDL) of mercury
in the treated effluent. |
| The salt washery or salt upgradation plant
installed in 1990 at the company’s salt works at Vedaranyam
ensures the use of washed salt at the Caustic Chlor plants at
Mettur and Karaikal, thereby minimising solid effluent generation
at both locations. |
|
| High efficiency graphite absorber units maximize
the absorption of by-product HCl vapours to produce saleable grade
HCl liquid. |
| Venturi absorption units have been installed in
the Silicon Tetrachloride (STC) and Ethyl Silicate plants to absorb
vent gases and produce saleable soda bleach. |
| All Chemplast plants have undertaken continuous
effluent reduction measures by resorting to the principles of 3 Rs
(Reduction at source, Reuse and Recycling). |
| Low sulphur fuel like LSHS and captively produced
hydrogen are used to control stack emissions with respect to SOx,
NOx and particulate matter from fired equipment like boilers and heaters
and power generating equipment. |
| High-efficiency burners and burner management systems
have been installed for precise control of excess air. In addition,
well designed tall stacks of adequate heights have also been installed.
State-of-the-art environment-friendly systems have been scrupulously
chosen to supplement and replace existing systems. An example is the
installation of a Vapour Absorption Refrigeration System using water
as a refrigerant in place of Ammonia or CFC commonly used as a refrigerant
medium in conventional refrigeration equipment. |
| The Fumed Silica plant has achieved zero discharge
of liquid effluent by resorting to total recycling of the effluents
generated. |
| Citizen Chemplast |
| Chemplast, and indeed the Sanmar Group
as a whole, have always striven to be a good corporate citizen, playing
an active role in providing quality school education for children
in its vicinity, clean drinking water and street lighting, establishing
primary health centres and contributing to the protection of the flora
and fauna around it. The group has also been a generous supporter
of good causes. |
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