METHOD AND INSTALLATION FOR OBTAINING NON-ROTTING SEDIMENT AND ENERGY Russian patent published in 2014 - IPC C02F11/04 C02F11/18 C02F3/28 C02F103/20 

FIELD: chemistry.

SUBSTANCE: group of inventions can be used for recycling sediments that are formed in the process of cleaning municipal and industrial sewage waters, with obtaining non-rotting sediment and electric energy. The method includes obtaining a fermented sediment with the application of main fermentation, obtaining the first water effluent flow and partially dehydrated, fermented sediment, by means of the first separation of liquid and solid components of the fermented sediment, obtaining partially dehydrated and hydrolysed fermented sediment with the application of thermohydrolysis of a partially dehydrated fermented sediment, fermentation of the partially dehydrated and hydrolysed sediment. The method also includes extraction of biogas, formed in fermentation and main fermentation, obtaining energy from biogas, including obtaining energy, required for realisation of thermohydrolysis, and obtaining additional energy, with the application of all biogas for obtaining electric energy. An installation includes a device for carrying out thermohydrolysis (16), a device for the first (10) and second (11) fermentation, for phase separation of liquid and solid components (17, 28), as well as a means for biogas extraction (20) and a device of obtaining electric energy (21).

EFFECT: inventions provide reliable and simple recycling of large quantity of sediments, which are poorly biodegraded, and in fact their complete conversion into biogas and further into electric energy.

13 cl, 4 dwg