MODULAR SYSTEM WITH VARIABLE CONTINUOUS FLOW FOR STREAM TREATMENT Russian patent published in 2014 - IPC C02F9/14 

FIELD: process engineering.

SUBSTANCE: invention relates to removal of organic and inorganic substances present in contaminated streams. Modular system allows the treatment of contaminated stream (CA). Said stream stays or does not stay in oxygen depletion process (0). Aerobic biological process (1) is executed with at least one aeration station for recovery of levels of oxygen dissolved in water (CA). Then, physical-chemical process (2) is carried out and considered to be a flotation process. The latter includes addition of flocculating or coagulating substance to definite section of the stream to be processed to aggregate the suspension particles and to produce large size and high density flakes. The latter define the flocculation pool (F1) downstream of stream flow (CA). Said suspension particles and to produce large size and high density flakes are fed to at least one micro aeration stage (M1) with micro bubbles that defines flotation pool (Fo1) along stream (CA). Here, agglomeration, concentration and compaction of floated materials occur. Besides, removal of concentrated floating material is removed (R) by removal of contaminants and/or materials contained in the stream. Thereafter, biological process (3) with stream (CA) aeration and oxidation is carried out to be followed by physical-chemical process (4).

EFFECT: ease of system adaptation, construction, operation and maintenance.

6 cl, 2 dwg