NOVELTY - A methane fermentation processing apparatus of organic waste, has a methane fermentation tank (1), an addition apparatus (5) for adding polymer flocculant to methane fermentation processed liquid ejected from methane fermentation tank, a water removal device (2) which dehydrates processed liquid containing flocculant, a denitrifying and liquid processing apparatus (3) and a coagulator (4).    USE - For purifying organic waste, such as coconut purification tank sludge, urine excrements of livestock, and organic refuse.    ADVANTAGE - The sulfur content, chemical oxygen demand, phosphorus and coloring component from the organic waste are aggregated by the polymer flocculant and removed efficiently. The ammonia and residual polymer flocculant are separated or thermally decomposed effectively. The processed liquid is purified efficiently by simple method.    DETAILED DESCRIPTION - A methane fermentation processing apparatus of organic waste, has a methane fermentation tank, an addition apparatus for adding polymer flocculant to methane fermentation processed liquid ejected from methane fermentation tank, a water removal device which dehydrates processed liquid containing flocculant, a denitrifying and liquid processing apparatus and a coagulator. The steam is made to contact with the dehydration supernatant liquid obtained from the water removal device. The denitrifying and supernatant liquid processing apparatus decomposes the flocculant in the liquid. An inorganic flocculant is added to the supernatant liquid ejected from supernatant liquid processing apparatus. The coagulator aggregates the aggregation target object in a supernatant liquid.    An INDEPENDENT CLAIM is also included for methane fermentation processing method which involves fermenting organic waste within methane fermentation tank, adding polymer flocculant to the processed liquid ejected from the tank, dehydrating the processed liquid, contacting supernatant liquid with steam, denitrifying flocculant, adding inorganic flocculant and aggregating the aggregation target object in the supernatant liquid.    DESCRIPTION OF DRAWING(S) - The figure shows outline block diagram of methane fermentation processing apparatus.    Methane fermentation tank (1)    water removal device (2)    Supernatant liquid processing apparatus (3)    Coagulator (4)    Addition apparatus (5)