METHOD FOR TREATING ORGANIC SEDIMENTS OF SEWAGE WATER

摘要

The invention relates to the treatment of organic sediments of sewage water and can be used as organomineral fertiliser for poor soils and for resoling. The inventive method involves the mixing of wet organic sediments with excess activated sludge at a ratio ranging from 1.1 to 1:3, a repeated cavitation treatment of said mixture during 9-12 hours with 3-10 circulating cycles and a cavitation number ranging from 0.01 to 0.05. Said treatment is associated with aerobic stabilisation and ejector aeration, said circulation being carried out in the presence of supernatant water which is added to the mixture of wet organic sediments with excess activated sludge at a ratio of 1/3 of the volume of the treated mixture. Said method also involves the compaction and unloading of the thus treated sediments from the lower part thereof in the volume of 1/3 of the volume of the treated mixture.