FIELD: technology of water and air purification.
SUBSTANCE: invention relates to designs of waste water treatment systems, in particular to self-contained devices for individual use, and is intended to create a local sewage system on suburb areas with seasonal or permanent residence, not connected to the central sewage system. Installation consists of a housing made in the form of a cylindrical container with a neck installed on it in the form of a cylinder of a smaller diameter, which is equipped with a cover. Inner space of the housing is divided by partitions into four sections: a receiving chamber combined with a primary settling tank, an aerotank and a secondary settling tank, which are interconnected by means of overflow holes and pumping devices. Two airlifts with detachable air ducts are installed as pumping devices, the surface of which is equipped with holes for air dispersion, with welded guide plates. In the primary settling tank there is an airlift for uniform supply of waste water to the main treatment stage, which is protected from coarse contaminants by a coarse filter, equipped with an air blower. In the aerotank, a unit of an inert carrier of microorganisms is installed, consisting of a removable cartridge with attached microorganisms, in the lower part of which an aerator is installed, which forms a single structure with a unit of an inert carrier of microorganisms. In the secondary settling tank there is a guide plate and an airlift for removal of active return/excess sludge, providing the supply of active return sludge into the aerotank, and active excess sludge—into the receiving chamber. In the neck there is a chamber with air blowing equipment installed inside it and a distribution and adjustment unit with quick-release connections.
EFFECT: increased efficiency of cleaning and reliability of the installation with simultaneous simplification of its design, reduced time of process maintenance.
5 cl, 5 dwg
