Water intake by source
In 2016-17, ITC's total water intake was
31.29 million kilolitres (kl) a decrease of
7.43% over the previous year (33.80 million
kl in 2015-16). This performance is primarily
attributable to the on-going initiatives
undertaken towards water conservation
across ITC Units.
Of the 31.29 million kl of total water intake,
78.79% of water resources was sourced from
surface water, 18.71% from ground water sources and only 2.50% from municipal and
other water sources.
In order to continually improve performance
in resource conservation, all ITC Units have
developed systems to monitor the specific
water intake (total water intake per unit of
product/service). Considering the fact that
three Units of Paperboards and Specialty
Papers Division (PSPD) together accounted
for around 88.8% of total water intake
of ITC, efforts have been focused on the
performance of these Units (as given in the
following section) under this Business.
Paperboards Unit at
Bhadrachalam
India's largest integrated pulp and
paperboards mill accounted for 75.58% of
the total water intake by ITC. For the year
2016-17, Bhadrachalam Unit set a target of
39.4 kl per tonne of product for its specific
water intake. The Unit achieved specific
water intake of 38.99 kl/tonne, well within
the target set and a reduction of 5.9% over the previous year's 41.44 kl/tonne. This was
primarily due to following water conservation
measures undertaken by the Unit:
- The reuse of excess white water in various
stages of pulp dilution in new fibre lines as
well as in paper machines.
- Treated effluent utilisation for cooling
tower make-up.
- Use of back water for floor cleaning in
paper machine areas.
Case Study: Reduction of specific water intake in PSPD, Bhadrachalam
PSPD Bhadrachalam is India's largest integrated pulping and paperboard manufacturing
unit. Since Pulp & Paper Industry is highly water intensive, significant investments have
been made in the last two decades to address this aspect.
- In 2016-17, the Unit engaged Andtriz, a renowned technology provider in pulp &
paper sector from Europe and implemented the recommendation of using treated
waste water for pulping process. This led to a 4.8% reduction of specific water intake
for pulping process. (33.2 kl/tonne of specific water intake in 2015-16 to 31.6 kl/
tonne of specific water intake in 2016-17).
- The Unit initiated a Focused Improvement Project to evaluate the characteristics
of process water and waste water generated from various processes. Accordingly,
several interventions have been undertaken to optimise the reuse of waste water as
process water.
Technological interventions and intensive in-house efforts have resulted in reduction in
overall specific water consumption by 5.9%.

Specialty Papers Unit at Tribeni
Tribeni Unit manufactures specialty paper, which uses a water intensive process. For the year
2016-17, Tribeni Unit had set a target of 60 kl/tonne for its specific water intake, as per the
norms issued by regulatory agencies. In 2016-17, the Unit achieved 58.58 kl/tonne which is
a significant 28.84% reduction over 2015-16.
Case Study: Reduction of specific water intake in PSPD, Tribeni
The Unit has implemented the following measures on the basis of 3R (Reduce, Reuse
and Recycle) principle to achieve significant reduction in specific water intake.
Reduce:
- Modification of showers in paper machine to reduce water consumption.
- Optimisation of water pressure in sealing water system.
- Replacement of conventional gland packing pumps by mechanical seal pumps.
- Installation of automatic back wash system for filters in process water treatment.
Reuse:
- Reuse of water from the hydraulic cooling system by installing cooling towers.
- Reuse of cooling water from steam condenser in paper making process.
Recycle:
- Recycling of tertiary treated waste water in process applications such as vacuum pump sealing water, cooling tower make-up, ash quenching, cleaning during grade change and non-process applications such as floor cleaning, toilet flushing etc.
Paperboards Unit at Kovai
Water conservation measures undertaken at paper mill and utilities areas led to the
reduction in specific water intake from 11.19 kl/tonne in 2015-16 to 10.55 kl/tonne in
2016-17. The following measures undertaken by the Unit enabled it to meet its 2016-17
specific water intake target of 11 kl/tonne.
- Usage of electricity from wind in place of electricity generated from cogen, leading to
lower consumption of demineralised water in boiler.
- Usage of treated waste water in paper machine as well as for cooling tower make-up.
- Reuse of cooling tower blowdown water and ultra filtration reject water in process areas.
Effluent Discharge
All ITC Units met the regulatory requirements of discharge quality and quantity in 2016-17.
The two Paperboards and Specialty Papers Units at Bhadrachalam and Tribeni accounted
for 98.58% of total treated waste water discharged outside Unit premises in ITC, out of
which overall 60.67% was utilised for irrigation purpose. Therefore, specific focus has been
accorded to the performance of these 2 Units in terms of treated effluent discharge volume
as well as quality.
Both for Bhadrachalam Unit (from 2011-12 onwards) and Tribeni Unit (from 2014-15
onwards), there is a continually decreasing trend of specific treated effluent discharged.
The specific treated effluent discharged for PSPD Bhadrachalam is 38.3 kl/Bone Dry Metric
Tonne (BDMT) which is superior compared to benchmark figure of 47 kl/BDMT of European
pulp and paper industry4.
Since 2010-11, the wastepaper-based pulp and paper mill at Kovai has not discharged
any treated effluent outside its premises. In 2016-17, the specific treated effluent
discharged (within the unit for irrigation) is 5.9 kl/tonne, which is significantly lower
than the proposed NPC standard of 15 kl/tonne.
The quality of the treated effluent from Paperboards and Specialty Papers Units has been
maintained at levels superior to the stipulated norms by the State Pollution Control Board
(SPCB).
4Technical EIA Guidance Manual for Pulp and Paper Industries- IL&FS Environment
The level of adsorbable organic halides (AOX)
generated during the bleaching process
is another critical parameter applicable
only to ITC's Bhadrachalam Unit. These
compounds are formed as a result of reaction
between residual lignin from wood fibres
and chlorine compounds used for bleaching.
Depicted below is the specific AOX level for
Bhadrachalam Unit for the year 2016-17
showing that the level is well below the norm
stipulated by Ministry of Environment, Forest
and Climate Change (MoEFCC) as well as
national and international benchmarks.