FIELD: ferrous metallurgy; methods of the rails thermal treatment.
SUBSTANCE: the invention is pertaining to the method of the biological purification of the household, urban and industrial waste waters from the organic substances, nitrogen and phosphorus compounds. The method provides for feeding of the waste water in the corridor type aerotank and the waste water treatment with the active sludge in the formed all over the length of the aerotank zones, which include at least one anaerobic zone, one non-oxide zone and one aerobic zone; separation of the active sludge and its recycling. In the anaerobic and non-oxide zones of the aerotank dispose the loading for the micro-organisms immobilization, which is made in the form of the blocks of planar loading, each of which is formed from the vertically arranged interleaving plane and corrugated sheets of 0.5-5.0 m height. In the anaerobic and non-oxide zones of the aerotank conduct stirring of the sludge mixture by means of its small bubbling aeration of the sludge mixture by the bottom porous aerators. The large bubbling aeration of the sludge mixture in the anaerobic and non-oxide zones is conducted by the bottom perforated aerators.
EFFECT: the invention ensures the improved biological purification of the household, urban and industrial waste waters from the organic substances, nitrogen and phosphorus compounds.
14 cl, 4 dwg
