Tannery Effluent Treatment with Aerobic System (Flow Rate: 950 KLD)
Key Problems in Handling Tannery Effluent:
High COD and BOD:
Organic matter from hides and chemicals used in tanning lead to very high COD and BOD, making biological treatment challenging and energy-intensive.
Salinity and TDS Issues:
Large quantities of salt used in hide preservation and soaking stages significantly raise the TDS, which affects microbial health and limits reuse potential, requiring high TDS wastewater solutions.
Toxicity from Sulfides and Solvents:
Effluents often carry toxic sulfides and various solvents or dyes that can inhibit biological activity, corrode equipment, and pose environmental hazards.
Reach out to us today to explore effective, sustainable solutions for managing tannery effluent and ensuring compliance with environmental standards.
Sludge Handling and Disposal:
The treatment of tannery wastewater generates hazardous sludge, especially with high chromium content, requiring safe disposal as per hazardous waste norms. This highlights the importance of chromium removal technology in modern industrial effluent treatment solutions.
A tannery ETP with a flow rate of 950 KLD had several basic issues in its aerobic treatment plant. The plant was equipped with a single aeration tank with one partition and a single clarifier. Due to multiple streams and heavy ammoniacal nitrogen, the plant was facing operational inefficiencies.
The Initial Approach
Our team conducted a comprehensive site evaluation to identify issues and areas of improvement. The following key challenges were observed:
- High COD levels (>10,000 ppm) due to sulfides and other pollutants.
- BOD levels exceeding discharge standards (>5,000 ppm).
- Higher Ammoniacal Nitrogen Levels at the outlet of the aeration tank (<450 ppm).
- Very high MLSS and poor settling.
- High SRT.
T1B Aerobio: Enhancing Aerobic Treatment Performance
T1B Aerobio is a scientifically formulated microbial consortium designed to optimize aerobic wastewater treatment. Its robust strains have the ability to survive in high TDS wastewater solutions with halophilic strains, degrade ammoniacal nitrogen, sodium acetate, and other nutrients, and perform under variable pH & temperature. The bioculture also secretes various enzymes, regulates sludge levels, and supports sustainable ETP plant operations.
Execution
Plant Optimization:
- Removal of excess sludge to improve oxygen transfer and microbial activity.
- The recirculation rate was adjusted, and its stream was uniformly distributed in both sections.
Dosing Regime:
A 60-day dosing schedule was implemented:
- Phase 1 (Days 1–30): High initial dose to establish microbial dominance.
- Phase 2 (Days 31–60): Maintenance dose to sustain treatment efficiency.
Monitoring Parameters:
- COD and BOD reduction.
- Ammoniacal Nitrogen levels in both aeration tanks.
- Sludge volume index (SVI) and microbial activity.
Observations
The addition of T1B Aerobio resulted in significant improvements in the aerobic system’s performance. Key observations are summarized below:
| Parameters | Day 1 | Day 15 | Day 30 | Day 45 | Day 60 |
|---|---|---|---|---|---|
| COD (ppm) | 8500 | 7469 | 4331 | 1345 | 423 |
| BOD (ppm) | 3770 | 2891 | 1761 | 760 | 181 |
| AN (ppm) | 652 | 545 | 291 | 166 | 82 |
Results
- COD Reduction: Achieved a 95.02% reduction by Day 60, ensuring compliance with regulatory standards.
- BOD Reduction: Achieved a 95.19% reduction, meeting safe discharge norms.
- AN Reduction: Achieved an 87.42% reduction by Day 60, aligning with discharge compliance.
- Improved Sludge Quality: Enhanced microbial flocculation reduced SVI and improved sludge settling.
- MLSS Levels: Controlled effectively, improving sludge settling quality.
Conclusion
The application of T1B Aerobio significantly enhanced the performance of the tannery’s aerobic treatment system. The plant achieved regulatory compliance for COD and BOD levels, stabilized DO levels, and improved sludge quality.
By leveraging trusted bioculture suppliers for industrial wastewater, partnering with reputed ETP and STP plant manufacturers in India, and integrating biocultures for wastewater treatment, Team One Biotech demonstrates leadership among industrial wastewater treatment companies in delivering sustainable, high-performance solutions for the industry.
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Among specialized Bioculture companies in India, Team One Biotech focuses on robust consortia for tough industrial effluents.
Email: sales@teamonebiotech.com
Visit: www.teamonebiotech.com
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