Indian Aluminium Company Limited, Alupuram Smelter Eloor.

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air pollution problems of poor visibility, mist and fog formation and health effects in
the Eloor Edayar industrial area.
14. The company has obtained Board’s consent under the Water Act for discharging
12000m 3 /day effluent through outlet no.A. into Periyar River, 5000m3/day effluent
through outlet E into Kuzhikandom thodu, and 4800 m3/day through outlet no: 1into
Edumula branch of Periyar River.
15. The hazardous wastes generated are spent catalyst, sulphur muck, spent lubricating oil
and system oil, and sludge from effluent treatment plants. Of these spent catalyst such
as zinc and nickel are disposed by sale to authorized dealer and spent vanadium
catalyst as hazardous waste in disposal site. Sulphur muck is stored for disposal in
approved disposal area. Effluent Treatment Plant sludge and filter cakes of phospho
gypsum from gupsum filters are stored in intermediate storage for final disposal in
LPDE lined gypsum yard. As per the Environmental statement furnished by the
company for 2003, the quantity of wastes handled were
sulphur muck-1158t/year
spent catalyst-65t/year
waste oil -17t/year
ETP sludge -2125.62t/year.
16. Low chromate treatment system is adopted for treating cooling water. It is informed
that the company have programme for changing cooling tower treatment system from
low chromate to non-chromate system in Ammonium Sulphate plant.
17. Raw material Sulphur spilled over during material handling near the unloading area is
reaching the river along with surface run off. The company have already taken some
steps for containing the spillage of sulphur particles escaping through the drain.
18. Effluent samples were collected from various plants ,effluent treatment plant and
outlets for analysis.
19. The company authority informed that they have proposals for improving the quality
of effluent and elimination of storm water contamination.
Recommendation :
a. Proposed to modify the effluent treatment during 2005 in a phased manner.
b. Scheme for diversion of vapour condensate from new ammonium sulphate
plant to phosphoric acid plant by 2006. But there is no production of
phosphoric acid.
c. Scheme for diverting storm water from pollution control plant area.
d. Scheme for elimination of E drain, to be commissioned by March 2006.
1. Effluent treatment plant is to be augmented incorporating measures for reducing
ammoniacal nitrogen content and effective control over the addition of treatment
chemicals, sludge removal, dewatering, and disposal.
2. Delay pond shall be provided in all storm water drains with monitoring facility.
3. Steps shall be taken for reducing the water consumption, effluent generation and
achieving zero effluent discharge system.
4. Adequate steps shall be taken to prevent the escape of gypsum through storm water
drains.
5. Oil traps in storm water drains are to be revamped and made functional.
6. Adequate steps for effective control of S02 emission through Sulphuric acid plant
stacks shall be taken.