NOVELTY - Economically enhancing lagoon treatment of wastewater involves providing influent stream of organic waste matter (11); processing stream in clarifier (2) to partially separate stream into sludge/clearwater components; processing sludge in anaerobic digester to produce biogas (14); using biogas as combustible fuel for engine powering generator to produce electricity; capturing by-product heat from engine (4)/generator (5) to heat clearwater of clarifier through heat exchanger; processing heated clearwater into lagoon; and discharging de-nitrified/de-carbonized clearwater from lagoon.    USE - For economically enhancing lagoon treatment of wastewater.    ADVANTAGE - The method is efficient and economical method for treating wastewater.    DETAILED DESCRIPTION - A method of economically enhancing lagoon treatment of wastewater involves providing an influent stream of at least partially organic waste matte (11); processing the influent stream in a clarifier (2) to at least partially separate the stream into sludge and clearwater components; processing the sludge component in an anaerobic digester (3) to produce a biogas (14) which is at least partially methane gas; using the biogas as combustible fuel for an engine (4) powering a generator (5) to produce electricity, both engine and generator additionally producing by-product heat; capturing the by-product heat from the engine and generator to heat the clearwater component of the clarifier through a first heat exchanger; processing the heated clearwater into at least one lagoon, where biologic action to de-nitrify and de-carbonize the clearwater is accelerated by the added heat; and discharging the de-nitrified and de-carbonized clearwater from the lagoon to an environmentally-safe application. The influent stream is from a fluidized source selected from sewage, septage, animal matures and urea's, fish processing byproducts, municipal garbage and yard waste. INDEPENDENT CLAIMS are included for the following:    (1) efficiently treating community organic waste involving providing a stream of municipal sewage for processing in a treatment facility having a lagoon; supplementing the stream of municipal sewage with at least one other stream of fluidized organic waste; separating each stream into clearwater and sludge components; processing the sludge component in an anaerobic digester to produce biogas; capturing and using the biogas to generate electricity; capturing the by-product heat from the electricity generation to heat the clearwater component for optimal aerobic biologic activity in the lagoon; using at least a portion of the electricity to operate equipment in the treatment facility; selling unneeded electricity to the commercial electrical grid; providing additional by-product heat by co-locating a power generation facility with the treatment facility; and balancing the energy requirements for efficient biologic activity by selectively using by-product heats; and    (2) a system for enhancing the treatment of wastewater comprising: stream of organic waste material; clarifier, in which the stream is separated into clearwater and sludge components; aerobic lagoon, in which the clearwater component is treated by aerobic biologic action; and unit for heating the aerobic lagoon by utilizing by-product heat from other co-located processes, where heat applied to the aerobic lagoon optimizes the biologic action in it.    DESCRIPTION OF DRAWING(S) - The figure shows a system diagram of a thermally enhanced wastewater treatment system.    Clarifier (2)    Anaerobic digester (3)    Engine (4)    Generator (5)    Organic waste matte (11)    Biogas (14)