RU23615U1 - AEROTENC-PRESSOR - Google Patents

Abstract

Aeration tank-displacer, including a body divided by partitions into corridors communicating in series, and the areas of their vertical cross-sections are equal to each other, inlets and outlets of water and activated sludge, a pneumatic aeration system with filters located at the bottom of each corridor, characterized in that at the inlet of the pneumatic of the aeration system, an ejector is additionally installed, while its mixing chamber is connected by a clarified water pipeline to a secondary clarifier.

Description

The invention relates to the field of biological wastewater treatment and can be used in various industries and in utilities.

A well-known installation of a corridor type air generator with pneumatic aerators (see page 28. Modeling aeration facilities for wastewater treatment / Braginsky L.N. et al. - L .: Chemistry, 1980. -144 sludge) containing a housing, partitions, pipelines for the supply of wastewater, activated sludge, the removal of purified water and the air supply from the blower, an air distribution device.

The disadvantage is the significant energy consumption for supplying air to the aeration tank due to the fact that most of the oxygen in the air does not participate in the biological oxidation of organic compounds in wastewater, since a large concentration of impurities prevents the dissolution of oxygen in water.

Known aerial displacer (see and.with. N 1318543 MKI C 02 F 3 / 02. Bull. N 23. 87.) containing the casing, divided by partitions into corridors communicating in series, and the area of their vertical cross sections are equal, inputs and conclusions of water and activated sludge, a pneumatic aeration system with filter cables located at the bottom of each corridor.

The disadvantage is excessive air consumption due to insufficient contact with wastewater, especially at the beginning of the aeration tank, which in turn leads to high energy costs.

IPC C 02 F 3/02

Aerotank propellant

much for the normal functioning of microorganisms, as well as improving the efficiency of wastewater treatment. from organic pollution.

The technical result is achieved by the fact that the aeration tank contains a housing divided by partitions into corridors in series, the areas of their vertical cross sections being equal, the inlets and outlets of water and activated sludge, a pneumatic aeration system with filters placed at the bottom of each corridor. An ejector is additionally installed at the inlet of the pneumatic system, while its mixing chamber is connected by a pipeline of clarified water to a secondary sump.

In FIG. 1 shows an aerotank displacer, a plan view; in FIG. 2 ejector.

The aeration tank-displacer contains a housing 1, divided by partitions 2 into corridors 3, communicating in series, and the areas of their vertical cross sections are equal to each other. The aeration tank has water inlets 4 and activated sludge 5, water outlets 6 and sludge 7, an air inlet pipe 8 on which an ejector 9 is mounted, a mixing chamber 10 of which is connected to the clarified water inlet 11 from the secondary sump (not shown in FIG.), Terminal 12 water-air mixture in the aeration tank, a pneumatic aeration system with filters 13 located at the bottom of each corridor 3.

The device operates as follows. Through the air inlet pipe 8, air intended for the normal functioning of microorganisms, as well as for mixing wastewater and activated sludge, enters the ejector 9, the mixing chamber 10 of which is connected by the clarified water pipe 11 to the secondary sump. In a narrow section of the ejector 9, the jet velocity increases, and the jet entrains water from the clarified water pipeline 11 connected to the secondary settler, due to which water is continuously sucked, as a result of which air-water mixture is introduced into the aeration tank 12.

It is known that the solubility of oxygen in water depends on the amount of contaminants in this water. The more pollution there is in water, the worse oxygen dissolves in it, and this leads to the fact that most of the oxygen in the air does not participate in the life of microorganisms. Therefore, in order to maintain a certain concentration of oxygen in the water, which is necessary for the normal functioning of microorganisms, more air has to be supplied, which in turn leads to additional energy costs.

The originality of the technical solution lies in the fact that the presence of a water-air mixture reduces the concentration of contaminants in wastewater, and this leads to the fact that in order to maintain a certain concentration of oxygen in the water, the necessary amount of microorganisms for normal life is provided with less air in comparison with the prototype. And this ultimately leads to a decrease in energy consumption for air intake, which in Melom reduces the energy consumption of the displacer aeration tank.

Aerotank-displacer, which includes a housing divided by partitions into corridors communicating in series, the areas of their vertical cross sections being equal to each other, inlets and outlets of water and activated sludge, a pneumatic aeration system with filters located at the bottom of each corridor, characterized in that the pneumatic inlet The aeration system is additionally equipped with an ejector, while its mixing chambers are connected by a pipeline of clarified water to a secondary sump.

Claim

3

Claims (1)

Aerotank-displacer, comprising a housing divided by partitions into corridors in series, the squares of their vertical cross sections being equal to each other, inlets and outlets of water and activated sludge, a pneumatic aeration system with filters located at the bottom of each corridor, characterized in that the pneumatic inlet The aeration system is additionally equipped with an ejector, while its mixing chamber is connected by a pipeline of clarified water to the secondary sump.