Polishing ponds or pond treatment plants are one of the oldest methods of wastewater treatment. These ponds contain wastewater that has been fully cleaned using biochemical methods. Their job is to “polish” this wastewater, for instance by filtering out more sedimentation. A distinction is made between naturally and technically aerated wastewater ponds. We always have the perfect solution ready just for you - from fixed bed reactors to jet injectors and special aerators. And our ground sludge remover takes away sediment deposits that form during operation.