Industrial food producers generate some of the most challenging trade waste and industrial wastewater streams. From dough and starch to fats, oils and fine solids, these waste streams place heavy pressure on wastewater treatment systems, especially when sites are operating in tight urban footprints with limited space for infrastructure.
This is where modern DAF water treatment, wastewater screening, and compact effluent treatment plants become critical. In this case study, we look at how a fully integrated trade waste system was designed and installed for one of Australia’s largest baked goods manufacturers, delivering reliable industrial wastewater treatment inside a remarkably small footprint.
Key Takeaways
The Challenge
Food and beverage manufacturers, especially bakeries, produce trade waste loaded with starches, dough, fats, sugars and suspended solids, and often have limited space for treatment infrastructure.
The Project
Aerofloat designed a compact wastewater treatment system for Goodman Fielder, one of Australia’s largest baking companies. Despite the small footprint, the plant runs through four stages:
- Wastewater screening: raw trade waste runs through a rotary drum to remove solids
- Inline coagulation & flocculation: chemical dosing promotes fine suspended particles to bind together.
- Dissolved air flotation (DAF): dissolved air is injected to float flocculated solids to allow for sludge removal.
- Sludge handling and dewatering: all collected sludge is processed through dewatering units to reduce waste volume and disposal costs.
Key Design Features
- Compact design: Mounting the screen above the sludge tank lets solids drop straight into the sludge system, cutting out extra footprint and handling steps.
- Service Friendly: Forklift-accessible chemical storage, external HMI access, and a service-friendly layout optimises performance and supports simple maintenance without disrupting operations.
Facing a similar space or waste challenge? Explore our wastewater treatment solutions for bakeries to see how a tailored system could work for your site. For sites managing landfill or industrial leachate, our leachate treatment guide covers what to look for in a compact, compliant system.
The challenge: treating food-grade trade waste in a tight footprint
Food and beverage manufacturers are among the highest producers of industrial effluent in Australia. Bakeries, in particular, generate wastewater loaded with starches, dough, fats, sugars and suspended solids that must be removed before discharge to sewer or reuse.
In this project, Aerofloat was tasked with delivering a wastewater treatment system for Goodman Fielder, one of the country’s largest commercial baking companies. The challenge was not only the wastewater itself, but the limited space available on site.
The entire waste treatment plant had to be installed into a narrow area measuring roughly five metres wide at one end, four metres at the other, and only ten metres long. This required a highly efficient layout using modular, compact industrial wastewater treatment solutions.
How the trade waste system works
Despite the tight footprint, the plant incorporates multiple stages of modern water purification technology designed to maximise performance and compliance.
- Wastewater screening
Raw trade waste is first pumped from the manufacturing facility into an externally fed rotary drum screen. This step is critical in wastewater screening, removing large solids such as dough lumps, raisins and bakery debris before they enter the main treatment system.
To save space, the screen is mounted above the sludge tank so all captured solids drop directly into the sludge system for later dewatering.
- Inline coagulation and flocculation
Once screened, wastewater passes through an inline pipe flocculator. This stage uses chemical dosing to promote coagulation and flocculation, allowing fine suspended particles to bind together.
This is a important step in industrial effluent treatment and DAF flotation, enabling the system to efficiently separate solids from water downstream.
- Dissolved air flotation (DAF)
The treated wastewater then enters the DAF system, where dissolved air is injected to float flocculated solids to the surface. These solids are removed as sludge, while clarified water exits for further treatment, discharge, or reuse.
This process forms the core of many modern dissolved air flotation and DAF water treatment plants used across food manufacturing, pharmaceuticals, and industrial wastewater management.
- Sludge handling and dewatering
All captured solids and screenings flow into a central sludge tank. From here, sludge can be processed through sludge dewatering units and dewatering solutions, reducing waste volume and disposal costs.
This step is essential for maintaining efficient industrial wastewater management and minimising environmental impact.
Designed for service, reliability and long term performance
The plant includes forklift-accessible chemical storage, external HMI access for operators and technicians, and a service-friendly control layout. This allows Aerofloat technicians to maintain the trade waste system, supply chemicals, and optimise performance without disrupting site operations.
This approach reflects how modern water treatment plant suppliers and water treatment plant manufacturers now design systems not just for performance, but for ease of operation, safety and long-term reliability.
Why compact wastewater plants matter
Across Australia, manufacturers are facing tighter discharge limits, rising water costs and growing sustainability pressures. Compact recycling water plants, industrial water recycling systems and modular effluent treatment plants allow facilities to remain compliant while conserving space and capital.
Technologies like DAF wastewater treatment, MBR water treatment, denitrification, pH adjustment in water treatment, and advanced wastewater purification systems can all be integrated into modern, space-efficient designs like this one.
A smarter way to manage industrial wastewater
This Goodman Fielder installation demonstrates how intelligent layout, modular design and proven water purification technology can turn even the smallest footprint into a fully functional industrial wastewater treatment plant.
By combining screening, flotation, sludge management and automation into one compact system, manufacturers gain reliable compliance, lower operating costs and a pathway to future water reuse.
For sites dealing with trade waste, dairy effluent treatment, abattoir wastewater treatment, leachate treatment plants or pharmaceutical water treatment plants, this approach represents the next generation of sustainable wastewater solutions.
