Liquid wastes are collected and stored on site, these wastes are spilt into their components of effluents and sludges , the effluent component undergoes various treatments in order to remove organics (including oils) and to separate out the sludge remaining within the effluent. The effluent is then polished and filtered to ensure it will meet or exceed discharge specifications. All effluent is tested to ensure compliance before discharge.
Extracted solids (sludges) are then treated in the sludge treatment process to render them dry and less hazardous (bottle on the far right).
Liquid sludges are separated from wastes and stored seperately, they then undergo various treatment processes that destroy organics (including oils), bind heavy metals and reduce/remove water contents. The result is a dry waste that is disposed of on landfill, the extraction of the water and liquid organics drastically reduces the volume of the overall waste stream going to landfill, reductions of around 80 % are usually obtained.