Cleanaway provides a range of biosolids waste management services for your needs.

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Complete biosolids waste management and consultation

Biosolids are a by-product of the sewage treatment process. This material has a high nutrient value and is rich in organic matter. When used as a soil conditioner, biosolids can help improve soil chemical and physical properties, which will then enhance plant growth.

What do biosolids look like? 

Biosolids vary depending on the treatment process and the moisture content. Dewatered biosolids typically range from 20% to 80% moisture. At 80% moisture biosolids resemble wet manure. As the moisture content drops, the biosolids begin to resemble soil. Liquid biosolids usually have a solids content of less than 10% and have the appearance of dark, organic liquid.

How are biosolids applied to land? 

The physical properties of the biosolids will determine the appropriate land application method used. Liquid biosolids are injected below the surface of the soil using specialised equipment. Dewatered biosolids are temporarily stockpiled at the application site before being applied to the surface of the soil, using specialised spreading equipment, and then ploughed below the soil surface.

Biosolids application rates are calculated to meet crop nutrient requirements. Due to their organic nature, nutrients are released slowly, and application rates are much higher than for conventional fertilisers. Application rates will depend on the nutrient requirements of the crop and the moisture content of the biosolids. Rates typically range from 50 to 100 wet tonnes per hectare.

What are the benefits of biosolids? 

Biosolids can be applied to the land as a soil amendment or a substitute for conventional fertilisers. The application of biosolids can benefit soil through the addition of organic matter and nutrients, which improve soil fertility and the quality and structure of soil. Biosolids also contain micronutrients such as copper, zinc and iron, which can further reduce the need for additional fertilisers.

The Cleanaway difference 

Cleanaway offers integrated biosolids treatment and consultation through innovative systems and procedures ensuring that we meet your needs and deliver safety and quality while minimising the environmental and community impacts. Our biosolid material has been carefully treated, monitored and utilised in accordance with Australian regulatory requirements.

We are an industry leader in biosolids and have integrated a series of large volume beneficial use programs for our customers in NSW and across Australia. We also work with water authorities on specific land application projects.

Our services include:

  • Soil and water monitoring
  • Land suitability assessment
  • Environmental planning
  • Documentation and lodgement
  • Audits
  • Effluent management plans
  • Biosolids research and market surveys
  • Geographic Information Systems (GIS) mapping of end use sites
  • Stakeholder engagement and community consultation
  • Year-round logistics management of organics transport
  • Spreading and injecting services for biosolids and other organic by-products

Closing the loop with biosolids waste management solutions

Cleanaway manages the full sludge value chain including technologies and services associated with biosolids treatment, recovery, distribution and disposal processes. With end-to-end biosolids treatment and application, we can optimise your biosolids and residuals management to convert sludge into energy, offset operational costs and increase sustainability through organic closed loop solutions.

Sludge collection
Biosolids processing

Key customers


Our biosolids help reduce the need for chemical fertilisers and are fully compliant with all local laws and regulations.

Food industries

We can help remove your organic waste and sludge and turn them into material for soil application, closing the loop on organic waste.

Why choose Cleanaway 

Largest network in Australia

Leverage on the largest network of strategically placed collection, storage and processing facilities.

100% compliant

Fully compliant fleet and EPA-compliant service with associated EPA documentation provided.

Closed loop solution

Our services are part of a closed loop giving you peace of mind that your waste gets a new lease on life.

Fully accredited

Cleanaway is certified to ISO 9001 (Quality), ISO 14001 (Environment) and AS 4801 (OHS) standards, helping to reduce your risk profile.

More solutions for Organic Waste

Cleanaway offers sustainable collection, disposal and recycling services for all your organic waste.
Interested in a Cleanaway service?

Contact us directly on 13 13 39 or fill up one of these short forms. We will get back to you as soon as possible with your request or booking.

Find your nearest Cleanaway team

We are in every major city and region in Australia. Chances are you will find us not too far away from where you are. We’re in Sydney, Melbourne, Brisbane, Adelaide, and Perth, as well as Karratha, Rockhampton, Newcastle, Geelong, Port Augusta, Albury, and more.