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DGG GRANT · 2025
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Solar Sludge Dryer

Trident Limited
Ongoing
Timeline: 
2025 - 2026
Grant amount
$322,485
CONTEXT

Why AII funded this

Aii funded this project to reduce emissions from sludge treatment processes, which are energy-intensive yet often overlooked. The project addresses inefficiencies in conventional steam-based drying and demonstrates a lower-carbon alternative using waste heat and solar energy. It also helps overcome financial barriers to adopting integrated waste management solutions.

project scope

This project focuses on improving sludge management and energy efficiency in textile processing by installing a sludge dewatering and drying system combined with waste heat recovery. The system reduces reliance on steam-based drying and enables more efficient handling of sludge generated during wastewater treatment, thereby lowering both energy use and emissions.


EFFECTIVENESS

IMPACT METRICS

tCO₂e reduced per annum
1,700
tonnes CO₂e / year
Grant cost per tCO₂e
$22
AII pilot funding
Solution cost per tCO₂e
$44
At deployment
Lifetime CO₂e impact
14,875
tCO₂e cumulative

Grant tier focus

Solar Sludge Dryer focuses on Tier 2.
Contact us about next steps
Applicable to textile facilities with wastewater treatment and sludge generation, particularly large integrated mills. Sludge management is a common challenge across the industry, making this solution widely relevant.
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Tier 4
Raw material extraction
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Tier 3
Raw material processing
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Tier 2
Material production
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Tier 1
Finished product assembly

Solution maturity level

Pre-seed

Definition:
Solutions that are at a concept level and in the process of evaluating and establishing their impact potential.

Pilot

Definition:
Solutions that are in the process of testing their solution in order to demonstrate a proof of concept.

Model

Definition:
Solutions that are working towards de-risking and reducing known barriers to scale.
Goal:

Scale

Definition:
Solutions that are commercially viable with a proven go-to-market strategy.
Model
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Current Level
Pre-seed
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Pilot
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Scale
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Model DEFINITION
Solutions that are working towards de-risking and reducing known barriers to scale.
LEARN MORE ABOUT OUR MATURITY LEVELS
Goal Of This Model Solution
Current Level
swirls graphic blue
Pre-seed DEFINITION
Solutions that are at a concept level and in the process of evaluating and establishing their impact potential.
LEARN MORE ABOUT OUR MATURITY LEVELS
swirls graphic blue
Pilot DEFINITION
Solutions that are in the process of testing their solution in order to demonstrate a proof of concept.
LEARN MORE ABOUT OUR MATURITY LEVELS
Scale DEFINITION
Solutions that are commercially viable with a proven go-to-market strategy.
swirls graphic blueLEARN MORE ABOUT OUR MATURITY LEVELS

Grant location

OUTLOOK

Scalability

The solution has good scalability potential, especially in regions with high solar irradiation. However, performance variability due to weather and site-specific conditions may affect replication. The integration of multiple systems requires upfront investment and technical coordination.


LEARNINGS

We're still gathering insights from this grant. Check back once the project wraps for a full set of learnings.
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Interested in this Grant?

Get in touch to learn more about how to implement this solution
Contact us about next steps