AirPro: High-Power Misting for Large-Scale Odour Control in Demanding Environments
Introduction: Odour Control Challenges in Heavy-Duty Industrial Environments
Industrial facilities today face far stronger regulatory, environmental, and community pressures around odour emissions. Landfills receive complaints from nearby neighbourhoods within minutes. Transfer stations face continuous truck traffic and volatile waste. Wastewater treatment plants deal with H₂S spikes and anaerobic odours. Recycling facilities process high-odor organics.
Traditional low-pressure systems and small misting devices can’t keep up: the coverage is too small, the droplets are too large, and the dispersal lacks the throw needed to cover open spaces.
This is where the AirPro ACU Series stands out—engineered specifically for large-scale, outdoor, industrial odour control using high-pressure, long-throw misting.
What Makes the AirPro ACU Series Different?
The AirPro ACU.15-C, ACU.25, and ACU.53 are purpose-built for industrial odour control, engineered to withstand harsh climates, high dust loading, constant operation, and the extreme airflow conditions found in demanding environments.
These models combine:
- High-pressure misting for ultra-fine droplets
- Large-area coverage from 175,000 to over 1,000,000 cubic feet
- Continuous-duty pumps
- Durable industrial enclosures
- Compatibility with AirSolution & XStreme neutralizers
- Proven reliability across landfills, transfer stations, wastewater sites, and MRFs
Their design reflects decades of engineering and field feedback from odor-intense industries.
Overview of the AirPro ACU Series
Below is a combined summary of the three high-pressure ACU units:
AirPro ACU.15-C
- Net Size: 13.5 × 12.5 × 8.5 in (34 × 32 × 21.6 cm)
- Weight: 18.4 lbs / 7.44 kg
- Coverage: 175,000 – 530,000 cft (5,000 – 15,000 m³)
- Area Coverage: 18,300 – 54,000 ft² (1,700 – 5,000 m²)
- Use Case: Mid-size transfer stations, sludge rooms, waste pads
AirPro ACU.25
- Net size: 14.5 × 13.5 × 7.3 in (38.8 × 34 × 18.5 cm)
- Weight: 18.5–34.5 lbs (8.4 – 15.6 kg)
- Coverage: 265,000 – 530,000 cft (7,500 – 15,000 m³)
- Area Coverage: 5,400 – 73,600 ft² (500 – 8,640 m²)
- Use Case: Medium-to-large industrial footprints & outdoor pads
AirPro ACU.53
- Net Size: 20 × 20 × 11 in (49.5 × 45.5 × 29.2 cm)
- Weight: 40 lbs / 18.14 kg
- Coverage: 530,000 – 1,060,000 cft (15,000 – 30,000 m³)
- Area Coverage: 54,000 – 108,000 ft² (5,000 – 10,000 m²)
- Use Case: Landfills, multi-acre transfer stations, WWTP open tanks
Adding the ACU.53 significantly expands perimeter control, creating a misting wall around a facility.
How High-Pressure Misting Works for Industrial Odour Control
High-pressure misting delivers ultra-fine droplets (often <10 microns). At this micro size, droplets stay airborne longer and bind with odour molecules, including hydrogen sulfide, mercaptans, ammonia, VOCs, and organic acids.
Why High-Pressure Misting Is Ideal for Industrial Odour Control
- Long airborne dwell time = more neutralization
- Large area dispersion without oversaturation
- Evaporative cooling effect (reduces VOC volatilization)
- Fine mist stays suspended instead of wetting surfaces
- Reaches into airflows, vents, truck movement paths, wind corridors
Learn more about mist physics from the U.S. EPA:
https://www.epa.gov/indoor-air-quality-iaq/behavior-airborne-particles
This science is why major industries rely on high-pressure misting for odour control.
Where the AirPro ACU Series Delivers the Greatest Impact
1. Landfills & Waste Transfer Stations
These operations experience constant odour spikes from:
- tipping floors
- open cells
- leachate ponds
- truck traffic
- volatile organic waste loads
ACU.53 units are typically installed along perimeter fencing to create a misting curtain, preventing odours from migrating to communities.
The ACU.25 and ACU.15-C are often used for:
- landfill
- transfer building entries
- compactor areas
- loading bays
2. Wastewater Treatment Plants (WWTP)
Sources include:
- preliminary treatment
- grit channels
- clarifiers
- sludge drying beds
- aeration tanks
- biosolids handling
BioStreme may be used for source treatment, but surface odour control requires misting.
The ACU’s high-pressure delivery is perfect for:
- headworks rooms
- sludge dewatering
- open tanks
- scum pits
Reference: Water Environment Federation (WEF) Odour Guide
https://www.wef.org/resources/for-the-public/public-information/odor-control/
2. Wastewater Treatment Plants (WWTP)
Sources include:
- preliminary treatment
- grit channels
- clarifiers
- sludge drying beds
- aeration tanks
- biosolids handling
BioStreme may be used for source treatment, but surface odour control requires misting.
The ACU’s high-pressure delivery is perfect for:
- headworks rooms
- sludge dewatering
- open tanks
- scum pits
Reference: Water Environment Federation (WEF) Odour Guide
https://www.wef.org/resources/for-the-public/public-information/odor-control/
3. Recycling Facilities (MRFs) & Organics Processing
Recycling plants processing food waste, organics, and mixed loads face strong odours. The AirPro ACU units:
- cover high ceilings
- neutralize air currents from conveyors
- treat truck off-loading areas
- suppress VOCs in sorting rooms
ACU.15-C is ideal indoors; ACU.25 and ACU.53 handle outdoor pads.
4. Composting Operations
Composting emits strong organic acids, ammonia, and VOCs.
The ACU series helps manage:
- aeration piles
- curing piles
- turning operations
Mist lines can be installed along pile edges for continuous treatment.
Chemical Integration: AirSolution & XStreme for Neutralization
The AirPro ACU systems pair seamlessly with:
AirSolution Neutralizers
- Water-based
- Non-toxic
- High-acceptance essential oil blends
- Neutralize odours at the molecular level
Ideal for:
✔ wastewater
✔ food waste
✔ landfills
✔ MRFs
XStreme Industrial Neutralizers
- Highly concentrated
- Designed for severe industrial odours
- Effective against: H₂S, mercaptans, VOCs, ammonia
- Compatible with all ACU units
This pairing allows facilities to match misting intensity with odour severity.
Installation Layout Examples
1. Perimeter Misting Wall (Landfills)
- ACU.53 units spaced along the fence
- High-pressure nozzles mounted 6–12 ft high
- Creates a wide mist barrier
- Prevents odour migration toward residential zones
2. Transfer Station Tunnel Layout
- ACU.25 mounted at loading doors
- Nozzles lining the interior
- Controls odours released during unloading
3. Wastewater Headworks Setup
- ACU.15-C or ACU.25 indoors
- 20–60 nozzles arranged around channels
- Treats turbulent influent odours
4. MRF Airflow Control
- ACU.25 in high-ceiling areas
- Nozzles suspended above tipping floors
- Reduces odours carried by conveyor airflow
Cost Savings: Why AirPro ACU Units Reduce Operating Costs
1. High Coverage Per Unit
One ACU.53 can cover up to 1,060,000 cubic feet.
This reduces the number of systems required on a site.
2. Low Chemical Consumption
High-pressure misting uses micro-droplets, reducing overall usage of AirSolution or XStreme.
3. Reduced Labour Costs
- Minimal maintenance
- Large chemical drums reduce refill frequency
- No need for manual surface spraying
4. Lower Risk of Fines or Compliance Costs
Odour complaints can quickly escalate into regulatory action in many regions.
Effective perimeter control prevents community impact.
Reference: Environmental Compliance requirements
https://www.epa.gov/compliance
Durability & Engineering: Built for Industrial Reality
The ACU Series is designed using:
- corrosion-resistant metals
- industrial-grade pumps
- UV-resistant housings
- water-resistant electrical enclosures
This ensures the systems withstand:
- heavy dust
- extreme heat
- high humidity
- constant vibration
- 24/7 runtime
Each ACU model includes:
- Continuous Run: Yes
- Vapour Units: Yes
- Compressor: 1–2 (depending on model)
- Solution Options: AirSolution, XStreme, AirSensory integration
Why the ACU Series Is the Best Choice for Large-Scale Industrial Odour Control
✔ High-pressure misting with micro-droplets
✔ Large-area coverage (up to 108,000 ft²)
✔ Designed specifically for heavy-duty industrial use
✔ Integrates with industry-leading odour neutralizers
✔ Low maintenance & high reliability
✔ Perfect for landfills, wastewater, transfer stations, and recycling
✔ Suitable for both perimeter and internal applications
✔ Proven performance worldwide
In demanding environments, coverage, reliability, and droplet size determine odour control success—and the ACU Series excels at all three.
Conclusion: AirPro ACU Series — The Industrial Standard for Odour Control
The AirPro ACU.15-C, ACU.25, and ACU.53 represent the most advanced misting systems available for industrial odour control. Engineered for high-demand environments and built to deliver consistent results, they provide unmatched performance in:
- landfill perimeter control
- transfer station tipping floors
- wastewater open tanks
- MRF sorting rooms
- large outdoor industrial pads
With high-pressure pumps, exceptional coverage, ultra-fine droplets, and seamless integration with AirSolution and XStreme, the AirPro ACU Series is the gold standard for large-scale odor mitigation.
