RU94027125A - Bioreactor - Google Patents

Abstract

FIELD: biological sewage cleaning. SUBSTANCE: bioreactor can be used in town and industrial sewage purification works. It is manufactured in the form of package of aeration works. Package includes fully assembled unit-module structure of individual industrial modules and flat bottom installed at horizontal level. Bioreactor has common aeration tank-mixer, at least two aeration tanks with independent secondary settling basins working in parallel, system of removal of active silt from them connected to secondary settling basins of independent biofilters with submerged aerated charge. Aeration tanks are fabricated in the form of aeration tanks-expulsor pumps, secondary settling basins are placed across outlet from them. Each secondary settling basin is provided with package of pipes mounted vertically. Aeration system includes coarse and fine dispersive aeration tanks, pneumoaeration tanks and air-lifting mixers. Each biofilter is composed of interconnected filtration space and cleaned water basin. Lower part of filtering space houses filtering charge, aeration devices arranged above it and drainage devices having inclination towards cleaned water basin. The latter is equipped with air lift pump of return of cleaned water and used film for its multiple cyclical treatment in filtering vessel. EFFECT: improved operational characteristics of bioreactor, simplified design. 15 cl, 10 dwg

Claims (1)

Usage: biological wastewater treatment in urban and industrial wastewater treatment plants. The inventive bioreactor is made in the form of a single unit of aeration structures. The block is made in the form of a prefabricated block-modular design of separate industrial modules and has a flat bottom at one horizontal level. The bioreactor consists of a single aeration tank mixer, at least two parallel aeration tanks with autonomous secondary sumps, activated sludge removal systems from them and autonomous biofilters connected to the secondary sumps with submersible aerated loading. Aeration tanks are made in the form of displacing aeration tanks, secondary settling tanks are placed at the outlet of them. Each secondary sump is equipped with a package of pipes inclined to the vertical. The aeration system aeration system includes coarse and finely dispersed aerators, pneumatic aerators and airlift mixers. Each biofilter consists of interconnected filter containers and a tank of purified water. In the lower part of the filtering tank there is a filtering load and aeration devices and drainage devices located below it with a bias towards the purified water tank. The latter is equipped with an airlift pump to return the mixture of purified water and spent biofilm to multiple cyclic treatment of it in a filter tank. 14 s.p. f-ly., 10 ill.