Abstract: An oily waste treatment array (23) is described, for use in a Marpol plant, allows the separation of low and high-flash-point material into high-flash-point dehydrated recovered oil, cleaned water, and solids, that can be operated in an urban environment. This can be achieved due to the coupling of six constituent devices, linked within the confines (28) of the sealed array (23), that enables odor control, and due to the unique treatment (30), prior to the centrifuge array (31). The pre-treatment array (30) allows the treatment of emulsified mixtures, optimizing the use of chemical additives, by use of an external-flow-array, that is thermally coupled and integrated within the overall array, that features an external circulation heating/stirring loop, in and out of an inclined and contracting tank (20), a ‘stirring region’ (41) and a series of three dimensional injection nozzles (9), making up a ‘dendrite’ structure (10).