Case Study · Visakhapatnam, Andhra Pradesh
Brandix SEZ
100% Solar Sludge Drying Case Study
Results at a Glance
100% Solar Sludge Drying Results at Brandix SEZ
This 100% solar sludge drying case study shows how Brandix SEZ, a textile industrial park in Visakhapatnam, dries around 10 TPD of sludge with zero external thermal energy using a Thermarex Solar Sludge Dryer.
~10 TPD
Sludge generation
100%
Solar energy
85–90%
Dry solids achieved
Fuel
Reused in cement kilns
Project Overview
Industry: Textile Industrial Park (SEZ)
Sludge Type: Segregated industrial sludge (non-hazardous fraction for fuel use)
Capacity: ~10 TPD
Technology: Solar Sludge Dryer (SSD)
Facts and Figures
Sludge Generation: ~10 TPD
Input Moisture: ~75–80%
Output Dryness: Up to 85–90% DS
Energy Source: 100% solar
System Type: Continuous solar drying with automation
The 100% Solar Sludge Drying Challenge
- Requirement to reduce landfill disposal across industrial cluster
- Target for carbon-neutral and sustainable operations
- Need to convert sludge into usable alternative fuel
- Avoid use of thermal energy (strict sustainability objective)
- Odour control across industrial park
- Ensure safe handling and consistent drying
The Solution
- Installation of Solar Sludge Dryer using greenhouse technology
- Sludge segregation at source to enable fuel reuse
- Continuous turning system for uniform drying
- Air management system to minimize odour
- Automated feeding and silo-based discharge system
Results & Benefits
- Near elimination of landfill disposal
- Production of alternative fuel for cement co-processing
- Zero external thermal energy consumption
- Reduced carbon footprint (aligned with sustainability goals)
- Improved sludge handling (granular dried output)
- Effective odour management across facility
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Why the Solar Sludge Dryer?
Brandix set a strict sustainability goal that ruled out thermal energy. A greenhouse Solar Sludge Dryer with continuous turning, air management for odour, and automated feeding and silo discharge met that goal while producing a granular fuel. Explore the Solar Sludge Dryer →FAQs
100% Solar Sludge Drying: Frequently Asked Questions
Can 100% solar sludge drying handle 10 TPD?
Yes. At Brandix SEZ, around 10 TPD is dried to 85–90% dry solids using only solar energy, with continuous turning for uniform drying.
What happens to the dried sludge?
The non-hazardous fraction, segregated at source, is used as alternative fuel for cement co-processing, nearly eliminating landfill disposal. Co-processing follows CPCB guidelines.
How is odour controlled?
An air management system inside the greenhouse controls airflow and minimises odour across the industrial park.
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