METHOD REVEGETATION OF AFFECTED SOILS Russian patent published in 2008 - IPC A01B79/02 

FIELD: agriculture.

SUBSTANCE: invention refers to ecology. Method includes introduction of chemical production waste on soil surface. Waste is soda production sludge waste in amount 10-40 kg/m². Ploughing then follows. After that additionally activated sludge of chemical plant treatment facilities is introduced in amount 4-5 kg/m² with following plant seed sowing. Soda production sludge waste contains wt %: calcite (CaCO₃) -79-97, aragonite (CaCO₃)-1-2, dolomite- up to 1, quartz - 1-8, water - the rest. Activated sludge of chemical plant treatment facilities contains wt %: mineral substances-53-78, organic substances - 22-47 including total nitrogen up to 3.6 %, phosphorus up to 4.8 %. Plant seeds are preferably as follows: lady grass, meadow clover, Lucerne, spear-grass.

EFFECT: steady vegetative recover of affected soils, neutralisation of soil toxicity and utilisation chemical waste.

4 cl, 1 dwg, 3 tbl, 1 ex