The Eco Solids Process
Overview
The Eco-Solids® Process is a continuous sludge stabilisation process suitable for treating all types of sewage sludge. The process produces an enhanced treated biosolid product (or a Class A/Exceptional Quality product according to the USA Environmental Protection Agency 503 definition).
Unlike conventional sludge stabilisation processes using quicklime/anhydrous calcium oxide, the ESP produces a consistently high quality product, and releases no nuisance odours. The ESP does not require any external heating to produce an enhanced treated sludge product.
The ESP has been developed from its commercial first series processes in the USA, where this technology is well established and units are being operated at full scale with proven performance. An illustration of the system is shown above.
- Technical information
The Eco-Solids® Process comprises mixing the dewatered sludge and calcium oxide (quicklime) in a hopper which is then transferred into a continuous plug-flow reactor.
- Operational Performance
The Eco-Solids® Process results in high solids product with little or no odour, reduced sludge volume, microbiologically inert product, treated biosolids with reduced concentrations of volatile solids, water extractable phosphates, and nitrates.
- Advantages and Benefits
The Eco-Solids® Process is a highly efficient process for the treatment of sewage and related sludges in order to produce a sludge product of the highest quality and handleability for agricultural use.
- Marketable Products
In addition to being cost-effective and simple to operate the ECO-SOLIDS® PROCESS, through beneficial recycling, produces two marketable products.
- Regulations
The Eco-Solid product is an Enhanced Quality (Class A/Advanced Treatment) product which meets all regulations in Europe and the US.


