SU960134A1 - Sectional unit for biological purification of liquid - Google Patents

Description

(54) SECTIONAL INSTALLATION FOR BIOLOGICAL FLUID CLEANING

one

Reflect ognosigs to installations for cleaning liquid gases from organic contaminants.

The known sectional installation for the biological purification of liquids, containing two bioflocculation tanks, a pump and pipelines for supplying the liquid to be purified, collecting trays for the cleaned vegetation, airborne and sludge pipes, separation tank 1J..V °

A disadvantage of the known installation is the complexity of the design and the expiration and, in particular, the presence of two biofloam reservoirs, as well as the optional. The need to install a pump to direct the liquid from one tank to another. In addition, a known installation can successfully exp; 5atatsii only indoors or, with a favorable climate, in a special open area.

The purpose of the invention is to increase the efficiency of use of the installation due to

Intensification of the cleaning process and reduction of capital costs.

This del is achieved by the fact that in a secdionic installation containing dilydric horizontal bioflocks, dionic tanks, catchment lots, settling section, pump and pipelines, bioflocks, dionic tanks are located coaxially in one another, the installation is equipped with a roll load placed in the inner tank, and the thin-layer stand-up module installed in the upper part of the stand-off section, the latter being communicated with the outer tank, and the tanks communicating with each other.

The drawing shows the proposed installation.

Claims (1)

The installation consists of the outer tank 1, the inner tank 2, the inter-reservoir space 3, the pneumatic aerator 4 of the trays 5 for collecting and draining the liquid. From one torda the tank has a front wall 6, through which feedstock of the initial liquid fluid is carried over coarse 7 and compressed air but coarse 8 from another highlander tank has a back wall 9, from which the purified liquid is tapped and 10 Sludge through pipe 11. A middle wall 12 is formed in the outer casing closer to the front wall, forming a settling section 13 with the back wall, containing the sludge thickener, a thin-walled module with a flooded collecting tray. The inner space of the tank 2 contains a distribution wall 14, a roll biological load 15 and a pneumatic aerator 16. Communication between the inner and annular spaces and the settling zone is carried out through windows 17. A threshold 18 is provided to enclose the settling zone from the aeration zone in the space 3 near the middle wall. The installation works as follows. Biological treatment of waste liquid is achieved due to the oxidative capacity of the active biological medium formed on biological biological load 15, the functioning of the active sludge in the waste liquid and the closed circulation of the sludge mixture inside the tank with its constant aeration and pneumatic aerators. The original waste liquid enters the interior of the tank, mixes with the sludge mixture there and, due to the distribution wall 14, flows evenly through the biological loading roll 15. At the lower point of the internal tank 2 there is a pneumatic aerator for mixing the sludge mixture and saturating the biological environment with oxygen. Next, the silt mixture passes through a window into the space 3, at the lower point of which the moaerator is located, which provides good atomization of compressed air. As a result of saturation of the sludge mixture with air, an air-41 mixture is formed, which, due to its low specific weight, rises in space 3 and is sewed into collection trays, through which it collects and returns to the front wall 6, where the internal tank hour pours out through the windows. mixing with the original liquid and sludge mixture in the tank and the circulation cycle is repeated. The cleaned liquid exits the inside of the tank through window 17 to the settling section L3, de, a layer of suspended sediment, which plays the role of a natural fagltra, passes through the thin-walled settling, is poured into the flooded collecting tray and is then for further processing. Excess sludge enters the sludge through the slot, from where it is removed for further processing. The return of the active from the settling zone to the aeration zone is carried out with the help of an air-lift pipe. The proposed installation can be used in the construction of sewage treatment plants with biological treatment of low productivity (25200). The construction of the installation makes it possible to mount it from reinforced concrete pipes of large diameter, allows the use of industrial construction methods, their factory production and installation on site in a short time with a minimum amount of construction work. SUBSTANCE: sectional installation for biological treatment of liquids, containing cylindrical horizontally located bioflocation tanks, catchment trays, settling section, pump and pipelines, in order to increase the efficiency of using the installation by intensifying the cleaning process and reducing capital costs, bioflocks The schiononnye tanks are located coaxially in the other, the installation is equipped with a roll load placed in the inner tank, as well as a module It is thin layer sedimentation, installed in the upper part of the sedimentation section, with the latter communicating with the external reservoir, and the reservoirs communicating with each other. Sources of information taken into account in the examination 1. USSR patent N. 359799, cl. C 02 F 3/18, 197O.