METHOD OF CLEANING WASTE WATER UTILIZING NATURAL BIOTIC COMPLEX Russian patent published in 1997 - IPC

FIELD: waste water treatment. SUBSTANCE: invention relates to biological disinfecting, cleaning, and posttreatment of waste waters from sugar-refinery factories. Waste water is disinfected in oxidation ponds by means of adding conferva, cyanobacteria, and diatomaceous microscopic algae at ratio 1: 1:1 and concentration 4.99 x $$$ cells in 1 ml. Water is then transferred onto biological plateau constituting low-shaped plot of Earth surface with superior water plants planted with density 160 specimens on 1 sq.m, flow velocity 0.01-0.003 m/s, and drain height 0.1 to 0.2 m. Water is finally cleaned in natural swamp with superior water vegetation with planting density 75 specimens on 1 sq.m, flow velocity 0.001 m/s, and drain height 0.45 m. EFFECT: enhanced cleaning efficiency. 6 tbl