A dry two-stage type of waste digestion method and apparatus

The present invention provides a two-stage dry waste digestion method and apparatus. First, the waste material in the first stage reactor was inoculated microorganism sufficiently acid fermentation, after an acid with a basic substance and a dry organic acid to adjust the pH of fermentation, production of methane for the second segment. Process to achieve the two-stage fermentation process comprising a microorganism inoculation operation unit acidogenic fermentation unit, and adjusting the pH unit methanogenic fermentation unit and the like. This process can effectively overcome the inhibition of anaerobic digestion of organic acids in the digestion process, without water, and without a large amount of waste water.