WATER & EFFLUENT MANAGEMENT


Water
GRI Standards

GRI 303: Water Section/Comments
GRI 103-1 Management approach: Explanation of the material topic and its boundary

Material aspects & scope

GRI 103-2 Management approach: The management approach and its components
GRI 103-3 Management approach: Evaluation of the management approach
GRI 303-1 Interactions with water as a shared resource Operation Water Efficiency
GRI 303-2 Management of water discharge-related impacts Effluent Treatment
GRI 303-3 Water withdrawal SIDC water: 166.15 Mega Lt.
Ground water: 340.5 Mega Lt.
GRI 303-4 Water discharge Keeping Our Waters Clean
GRI 303-5 Water consumption Water Consumed

Operation Water Efficiency

KNPL understands its role on the issue and strives to achieve utmost water efficiency in its operations through close loop processing and daily water usage monitoring at source to avoid wastage.

Key water conservation initiatives are:

Implementation of dry screw vacuum pump to replace water base vacuum pump

Optimization of water consumption of
cooling tower    
    

Reuse of steam condensate as boiler
feed     

Reuse of STP treated water for toilet
flushing

Daily water monitoring at source through
installed water meters

Sustenance of control over water spillage through tank float
valves

100% recycling of treated water from zero liquid discharge facility

KNPL has been able to reduce its water consumption over the years. Specific water consumption, i.e. water consumption/Ton of FG, is shown below:

Water usage in KL/Tone of FG

At our Lote plant, collected rain water is being used in processes during monsoon. At other plants, we have
installed groundwater recharge setups.

Rainwater usage in processes at Lote



Water Source Water Consumed (in Mega Lts.)
SIDC (State Industrial Development Corporation) 166.15
Ground Water 340.5
Total Water consumption 506.65

Effluent Treatment
GRI Standards

GRI 306: Effluents and Waste Section/Comments
GRI 103-1 Management approach: Explanation of the material topic and its boundary

Material aspects & scope

GRI 103-2 Management approach: The management approach and its components
GRI 103-3 Management approach: Evaluation of the management approach
GRI 306-1 Water discharge by quality and destination Effluent treatment
GRI 306-2 Waste by type and disposal method All wastes are disposed to authorised TSDF; Partially reported
GRI 306-3 Significant spills No significant spill reported.
GRI 306-4 Transport of hazardous waste No hazardous waste transported internationally. All are disposed to local authorised TSDF. Material and waste management
GRI 306-5 Water bodies affected by water discharges and/or runoff All major facilities are zero effluent discharge; hence water bodies are not affected adversely

Keeping Our Waters Clean

Our Lote, Bawal and Hosur manufacturing facilities have zero liquid discharge. The Jainpur facility has an Effluent Treatment Plant (ETP) and a Sewage Treatment Plant (STP) to treat effluent as per statutory norms, while implementation of zero liquid discharge is in progress.

Domestic effluent is separately treated in the sewage treatment plant, which is reused for toilet flushing and gardening purposes. Industrial effluent generated from processes such as floor washing, equipment cleaning, etc. is treated in the effluent treatment plant, followed by treatment through Reverse Osmosis (RO) and a Multi Effect Evaporator (MEE) system.

RO permeate is reused in processes such as make up water for cooling towers, boilers, etc. Purified water, generated after the final stage of the Multi Effect Evaporator, is also reused in processes to ensure 100% recycling of treated water. KNPL has planned for a zero liquid discharge setup at all its Greenfield project sites.