AsNu cares about the environment, and uses the Dulux Envirowash system.
The Dulux EnviroWash System provides an environmentally responsible way of washing out painting tools, such as brushes and rollers. The revolutionary wash system converts waterborne paint washings into clear water and solid waste, allowing for easier and safer disposal.
With Site Waste Management Plans becoming compulsory by many local authorities the transportable units provide the ideal facility for washing out paint equipment and tins, and is becoming an indispensable part of the painting and decorating clean-up process.
Source: http://www.dulux.com.au/specifier/our-brands/dulux-envirosolutions/envirowash-system
Our Paint Cleanup Process
The units are made up of two parts - the sink and a separate filtration tank. The units work by separating paint washings into clear water and solid paint. The spray gun is used to wash rollers, brushes, paint trays, pots and anything else that has been used in the painting process. Once the unit is full, treatment chemicals are used to separate the solid matter and water from the paint washings. After 1-6 hours*, clear water remains in the top of the tank and paint sludge is left at the bottom. Clear water can be recycled into other trade related applications, or released onto flat grassy areas and gardens. Remaining paint sludge is filtered, ready for removal and drying. Once residue is dry, it is ready to be disposed of as non-hazardous solid waste.
* Please note: Treatment times vary depending on the capacity size of the unit and concentration of paint washings. Typically, 450 litres of paint water discharge produces 5kg of solid paint residue.
Source: Dulux (links to external site)