NOVELTY - Fermentation promotion of putrefactive waste comprising: (a) adding an additive with active calcined lime to putrefactive waste material; (b) stopping the decay of reaction product by adding alkali, water/air; (c) proliferating specific bacteria; (d) introducing carbon dioxide into the product to reduce pH; (e) supplying oxygen/air and water before or at desired time of fermentation to increase microogranisms in succession, is new.    USE - For fermenting putrefactive waste material.    ADVANTAGE - The carbon dioxide is introduced to the reaction product in a high alkali environment and the pH is lowered forcibly by natural method, thereby microorganism belonging to the first group or proliferated effectively. The processing time is reduced and large amount of waste is processed in a short period of time.    DETAILED DESCRIPTION - Fermentation promotion of putrefactive waste comprising:    (a) adding an additive with highly active calcined lime as main component to the putrefactive waste material for generating rapid hydration;    (b) stopping reaction product decay by adding alkali and supplying water and air for a suitable time;    (c) proliferating 90-A-1 microbes (FERM P-14222), filamentous fungi and a resistant bacteria group living in the reaction product in the high alkali condition in succession to carry out the alkali fermentation;    (d) forcibly reducing the pH by introducing carbon dioxide into the reaction product;    (e) supplying oxygen/air and water before fermentation or at desired time during fermentation to increase microorganisms in succession, is new.    An INDEPENDENT CLAIM is also included for fermentation promotion apparatus. The apparatus comprises a fermentation space which can be sealed for depositing the reaction product generated by the rapid hydration reaction of solid-liquid mixture putrefactive waste material and calcined lime, a feed pipe line which supplies carbon dioxide, oxygen or air in the reaction product deposited in the space and a control unit which supplies carbon dioxide to the feed pipe at the initial stage and introduces oxygen/air after predetermined time. The apparatus further comprises a feed pipe line of water to the reaction product.    DESCRIPTION OF DRAWING(S) - The figure shows outline block diagram of fermentation promotion apparatus. (Drawing includes non-English language text).    Fermentation space (3)    Fermentation floor (4)    Feed pipe line of air/carbon dioxide (6)    Feed pipe line of water (7)    Control unit (10)