leather-wastewater

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Every leather industry produces a huge quantity of leather wastewater which is called tannery wastewater that has an enormous number of pollutants that damage the environment if it is discharged without the right treatment. The tanning processes of the leather wastewater are responsible for the discharge of uncontrolled chlorides, sulfates, and other heavy metals that pollutes water. A large quantity of water is used in the tanning process of which 90% of the water is discharged as effluent. There are 4 stages to treat leather wastewater:

• -Preliminary Stage (Screening, Grit removal, Oil & Grease Removal0)
• Primary Stage (Equalization, Neutralization & Sedimentation)
• Secondary Stage (Aerobic Process & Anaerobic Process)
• Tertiary Stage (Sand Filters, Carbon Filters, Micro Filters, Ultra Filtration, Retention Ponds, Nano Filtration & Reverse Osmosis).
If the leather wastewater is left into the water bodies untreated, the following would be the consequences:
• Cause blue-tinted water poisoned with chromium, lead, and arsenic.
• Decades of contamination in the air, water, and soil
• People suffering from asthma, eyesight problems, and skin diseases, liver & kidney problems.
Location: FIEE Complex, Ma Anandmayee Marg, Block A, Okhla Phase II, Okhla Industrial Estate, New Delhi, Delhi 110020, India

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