INSTALLATION FOR FINE BIOLOGICAL PURIFICATION OF SEWAGE Russian patent published in 2004 - IPC

FIELD: biological purification of sewage containing organic impurities. SUBSTANCE: invention presents an installation for fine biological purification of sewage containing concentrated organic impurities. Installation has the following in series mounted equipment: an anaerobic bioreactor, an aerobic bioreactor, a settler supplied with an airlift with a pipeline of recirculation of active silt, a bioreactor of a tertiary purification with a loader for an attached microflora, a chamber of a decontamination. The anaerobic bioreactor has a pyramid-shaped bottom for sediments collection and is supplied with a pipeline for the sediments offtake, a central partition not reaching to the bottom and forming a biosorption chamber, a tray with an adjustable spillway and a loader for an attached microflora, that is reinforced with metal and located on the central partition periphery. The chamber of biosorption is supplied with an aerator located in its lower part. The aerobic bioreactor has a spray-directing partition located at its entry and not reaching to its bottom, the settler has a pyramid-shaped bottom for collection of the active silt and is supplied with a spray-directing partition not reaching to the bottom, and its upper part is supplied with a unit of thin layer elements. The pipeline of recirculation of active silt is linked with the chamber of biosorption and the aerobic bioreactor. The bioreactor of a tertiary purification is divided by a hermetical partition into two sections, each of which is supplied with a spray-directing partition not reaching to the bottom and is linked with the chamber of decontamination. The pipe line of water delivery for purification is linked with the chamber of biosorption of the anaerobic bioreactor. In the capacity of the loader for an attached microflora in the anaerobic bioreactor and in the bioreactor of a tertiary purification a fine-porous polymeric material is used. The chamber of a decontamination is made in the form of a trough with one and more ultra-violet emitters located above it. Installation may be made in the form of a unified unit - module. EFFECT: the installation allows to perform purification of sewage for rather short time with low power consumption. 4 cl, 2 dwg