Archive · 15 Aug 2025
India's Milk Industry: Wastewater Challenges and Eco-Friendly Solutions
India makes a lot of milk, which is good for the economy, but it also makes a lot of dirty water, called wastewater.
This water is a problem because it can hurt the environment if it's not cleaned up.
Scientists are studying ways to clean this water, and one idea is to use natural stuff like papaya seeds and lemon peels.
These natural cleaners are better for the environment than the chemicals often used now.
They also make less waste and can help clean the water so it can be used again.
Experts say we need to find better ways to clean and reuse the water from dairy farms to protect the environment.
India leads global milk production, but faces a significant wastewater problem.
The dairy sector generates about 2.5 times more wastewater than milk produced.
A study suggests using natural coagulants like papaya seeds and lemon peels to treat wastewater.
Natural coagulants are cost-effective and produce biodegradable sludge, unlike chemical alternatives.
Experts highlight the need for more research on sustainable wastewater treatment and reuse.
- Who
- Researchers, including Lipsa Mishra and Pragyan Das, are studying eco-friendly wastewater treatment methods.
- What
- The dairy industry generates significant wastewater that requires eco-friendly treatment.
- When
- The study was published in Environmental Monitoring and Assessment in 2024.
- Where
- India, which leads in global milk production.
- Why
- To reduce environmental harm caused by untreated dairy wastewater and explore sustainable treatment options.
Traditional Wastewater Treatment
Eco-Friendly Alternatives
Coagulants
Traditional Wastewater Treatment
Relies on chemical coagulants like alum and ferrous sulfate.
Eco-Friendly Alternatives
Focuses on natural and biodegradable alternatives.
Sludge composition
Traditional Wastewater Treatment
Produces chemical sludge which is harmful to the environment
Eco-Friendly Alternatives
Generates biodegradable sludge with fewer environmental risks.
- Global Milk Production Leader
- India
- Wastewater Ratio
- 2.5 times milk production
- Natural Coagulants Used
- Papaya seeds, lemon peels, drumstick powder
- BOD removal (lemon peels)
- 93.8%
- Study's Focus
- Eco-friendly wastewater treatment alternatives.