NOVELTY - The method comprises: receiving wastewater from a user; processing the wastewater to remove solid waste; applying natural gas to a lower input of a chamber; supplying the solid waste onto a top surface of a forced air bubbling bed structure within the chamber; burning the natural gas and the solid waste on the top surface of the bubbling bed structure to form hot air at an upper exit of a top of the chamber; receiving the hot air at a boiler (191) from the upper exit of the chamber; and forming steam from a condensate utilizing the hot air at the boiler.    USE - The method is useful for purifying and recirculating potable water form the waste water and for generating electricity, where the waste water comprises liquid black water and grey water generated from activities such as laundry, dishwashing, showers and bathing.    ADVANTAGE - The method is capable of purifying and recycling the potable water from the waste water in an economical manner.    DETAILED DESCRIPTION - The method comprises: receiving wastewater from a user; processing the wastewater to remove solid waste; applying natural gas to a lower input of a chamber; supplying the solid waste onto a top surface of a forced air bubbling bed structure within the chamber; burning the natural gas and the solid waste on the top surface of the bubbling bed structure to form hot air at an upper exit of a top of the chamber; receiving the hot air at a boiler (191) from the upper exit of the chamber; forming steam from a condensate utilizing the hot air at the boiler; applying the steam from the boiler to operate a steam turbine generator; providing electricity generated from the steam turbine generator to the user; providing waste steam from operating the steam turbine generator to a wastewater treatment apparatus; distilling the wastewater to form a distilled potable water at the wastewater treatment apparatus using the waste steam; returning the condensate from the wastewater treatment apparatus to the boiler for re-use in forming the steam for the steam turbine generator; returning the distilled water for re-use by the use via a reservoir; operating a co-adjuvant gas turbine generator (187) intermittently to apply supplemental steam to the wastewater treatment apparatus in addition to steam provided to the apparatus by the steam turbine generator; and providing the electricity from the steam turbine generator to users not served by the water treatment apparatus. The step of distilling the wastewater includes condensing the waste steam to form a condensate. The method further comprises: receiving greywater (104); preheating liquid blackwater (106) in a first preheater and then treating the preheated blackwater with ozone; preheating liquid greywater in a second preheater, then treating the preheated greywater with ozone and then distilling the ozone treated greywater to produce the potable distilled water; returning spent steam from a distillation apparatus as condensate to the co-adjuvant gas turbine generator; applying hot water from the distillation apparatus via a path including the first and second preheaters to the vessel; and discharging hot water stored in the vessel to the reservoir. The hot water heats the preheaters, and is thermally connected to the preheaters while not being commingled with liquid in the preheaters.    DESCRIPTION OF DRAWING(S) - The figure shows a block diagram of a process for water purification.    Grey water (104)    Black water (106)    Large reservoir (168)    Gas turbine generator (187)    Boiler. (191)