Co-composting process and apparatus for treating solid waste and sewage sludge

摘要

A method for converting municipal solid waste and sewage sludge into an organic fertilizer has a Stage 1 and a Stage 2, and includes a vessel that has three climate zones. Stage 1 has three climate zones, wherein the first climate zone contains thermophilic microorganisms, the second climate zone contains mesophilic microorganisms, and the third climate zone contains other microorganisms. The product of Stage 1 is reintroduced into Stage 2 and is then inoculated with a biodegrading enzyme and a bacteria species to produce a different final product fertilizer from Stage 2.