Method for destroying cells in sewage sludge involves adding chemical which changes its pH under specific treatment conditions

摘要

Method for destroying cells in sewage sludge involves adding a chemical which changes its pH for a treatment time of 10 minutes to 5 hours at 40 - 95[deg]C. An independent claim is included for an apparatus for carrying out the method which comprises a chemical dosing unit (12, 13), a treatment vessel (17) for the product and a heating system (26) for the vessel.