NOVELTY - Process for treating a sludge containing hydrocarbons (3), comprises contacting the sludge with a biofilm comprising microorganisms of Bacillus sp, Acinetobacter sp and/or Brevibacillus sp, where the contacting is undertaken under conditions to at least partly reduce the amount of hydrocarbons in the sludge.    USE - The process is useful for: treating a sludge containing hydrocarbons; and making a bioremediation facility for remediating hydrocarbon sludge. The microorganisms is useful for the formation of a biofilm to treat sludge containing hydrocarbons (all claimed), where the sludge is petroleum sludge and oil waste.    ADVANTAGE - The process is simple, cost-effective and environmental friendly for the treatment of sludge containing hydrocarbons. The process reduces total petroleum hydrocarbon (TPH) in hydrocarbon sludge within a short period of time e.g. the process reduces more than 95% TPH in 9 weeks of treatment. The process does not require: excessive amounts of water nor does it use any toxic chemicals, hence the process is substantially dry and harmless; and any post-process treatment, storage or discharge.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) a sludge hydrocarbon bed having a biofilm comprising the microorganisms;    (2) a method of making a bioremediation facility for remediating a hydrocarbon sludge comprising: (a) placing the sludge in a treatment zone; (b) seeding the sludge with the microorganisms; (c) forming a biofilm from the seeded microorganisms; and (d) degrading the hydrocarbons within the sludge using the biofilm; and    (3) a kit for use in treating a sludge containing hydrocarbons, comprising a solution containing the microorganisms and instructions for, contacting the solution with the sludge under conditions to at least partly reduce the amount of hydrocarbons in the sludge.    DESCRIPTION OF DRAWING(S) - The figure shows a pit used in a biotreatment facility which utilizes treatment for sludge containing hydrocarbons.    Pit (1)    Impervious base (2)    Hydrocarbon sludge (3)    Porous conduits (5)    Berms. (7)