METHOD OF OBTAINING TECHNOGENIC SOIL AND TECHNOGENIC SOIL Russian patent published in 2013 - IPC C05F7/00 C05F17/00 

FIELD: chemistry.

SUBSTANCE: invention relates to field of agricultural production and can be applied in obtaining of soils. Method includes mixing of silt sediment with powder-like valley peat, introduction of natural soil, solid-phase fermentation and fractioning. As silt sediment applied is silt sediment of water preparation with humidity not more than 75% and milled to fraction 5-7 mm. Such silt sediment is preliminarily mixed with valley peat with humidity not more than 50%. Weight ratio silt sediment:valley peat, equals 1:(1.7-1.8). After that, fermentation of mixture is performed by its composting in piles with periodical tossing and mixing with obtaining biocompost with 50-55% humidity. Then, predrying of obtained biocompost to 20-25% humidity and its mixing with foundation pit soil based on integumentary and alluvial loam and fluvioglacial sends, are carried out. Weight ratio of foundation pit soil to the one, introduced for obtaining biocompost slit sediment of water preparing stations, equals (2.2.-2.3):1. Technogenic soil, obtained by claimed method, contains foundation pit soil in quantity 44-46 wt % and biocompost. Biocompost represents fermented mixture of valley peat and slit sediment of water preparing stations.

EFFECT: application of claimed soil ensures high germination of herbal mixtures on lawn.

4 cl, 3 tbl