Pieter Bon values the environment and therefore has a (biological) water purification for waste water for the tank cleaning facility.
At Pieter Bon the waste water is purified by a bioreactor and membrane filtration. The water is pumped to a large reactor after which the bacteria can do their job. The clean water is separated in the membrane filters. The water is so clean that after treatment it can be discharged directly into the sewer. With the centrifuges, sludge is separated from the rest and is drained separately.