NOVELTY - Decomposition of organic waste material comprises providing a treatment tank (4) for decomposition of organic waste material, where treatment tank contains an active biomass comprising at least one bacteria that decompose organic material (28); providing greater than or equal to 2 inlets to the treatment tank and a processor (40) for receiving and storing information on the status of chemical oxygen demand of the active biomass; controlling a mass flow control system with a processor to feed the organic material through a first inlet; and altering introduction rate of the organic material.    USE - The method is for decomposing organic waste material (claimed), organic contaminants, and water waste from waste sources e.g. industrial, commercial, and recycled wastes, to produce a marketable or immediately useful energy product (methane and/or hydrogen) and commercial gas stream (e.g. carbon dioxide). Organic waste material is e.g. dated food products (e.g. cheese, cheese by-products, processed cheese, and low cellulosic content vegetable), fruit masses (e.g. preferably excluding wood products having persistent or non-digestible cellulose material), such as rice starch, potato starch, potato mass, wheat starch, sugars, and syrups, animal waste products (excluding bone and certain non-digestible tissue, such as cartilage), synthetic organic materials, natural organic materials, dairy products or dairy intermediates (e.g. yogurt, ice cream, milk, milk fat, cream, egg content preferably excluding shells), baked goods, and expired food products.    ADVANTAGE - The method converts wastes and contaminants to easily disposed materials. Automated controls are provided in the organic waste treatment system to provide more frequent and more reliable control over the performance of the system and to assure a reliable output of the intended gaseous products.    DETAILED DESCRIPTION - Decomposition of organic waste material comprises:    (A) providing a treatment tank (4) for decomposition of organic waste material, where treatment tank contains an active biomass comprising at least one bacteria that decompose organic material (28);    (B) providing greater than or equal to 2 inlets to the treatment tank, a first inlet comprising an inlet for organic material and a second inlet comprising an inlet for an aqueous stream (30), and a processor (40) for receiving and storing information on the status of chemical oxygen demand of the active biomass, where oxygen provision capability of a first organic material can be fed into the treatment tank through the first inlet;    (C) feeding the organic material(s) through the first inlet into the treatment tank;    (D) feeding an aqueous stream through the second inlet into the treatment tank;    (E) controlling a mass flow control system with a processor to feed the organic material through the first inlet; and    (F) altering introduction rate of the organic material based at least in part upon the status of chemical oxygen demand in the treatment tank as recognized by the processor.    An INDEPENDENT CLAIM is included for an organic waste treatment system (2).    DESCRIPTION OF DRAWING(S) - The drawing is a schematic view of organic waste treatment system.    Organic waste treatment system (2)    Treatment tank (4)    Organic material (28)    Aqueous stream (30)    Processor (40)