SU897106A3 - Station for biological cleaning of sewage - Google Patents

Description

(54) STATION OF BIOLOGICAL WASTEWATER TREATMENT

I

The invention relates to a combined biological wastewater treatment plant using activated sludge.

Known interlocking station j

wastewater treatment plant, which is a cylindrical tank divided by coaxially arranged partitions into biosorption, aeration and settling chambers, aerators, a mixing device, a farm with its rotation mechanism 1-1

However, the known station is inefficient in operation, does not provide the necessary degree of purification of waste water.

The purpose of the invention is to increase the degree of purification due to the intensification of treatment processes.

This goal is achieved by the fact that in a station containing cylinders 20

a tank divided by coaxially spaced partitions into biosorption, aeration and settling chambers, a truss with a mechanism for its rotation, a retractor attached to it

with blades and floats, a bypass tray, and also aerators, a mixing device B1: filled in the form of annular screens with an angled U-ZO blades and ribs attached to the screen along a helical line above them, the aeration chamber in its lower part is equipped flap.

In addition, the station is equipped with plates placed in the sedimentation chamber by an angle of 30-45 to the axis of the tank, as well as with a guide vane mounted in the aeration chamber.

FIG. 1 shows a station, longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - section BB at 4ig. 2; in fig. 4 - biosorption and aeration chambers with a movable screen, first section; in fig. 5 - section bb-ya ({ig. 1; in fig. 6 - section d-y on 4ig. I; in figure 7 - float with a movable screen, section.

The plant for biological wastewater treatment contains a cylindrical reservoir I, coaxially located peregoryts 2 and 3, which are divided into 4–6 chambers according to biosorption, aeration and sedimentation. A piping 7 is located along the axis of the reservoir for supplying source wastewater, kutz through conduit 8 discharges activated sludge from bulkhead 9, which is designated for thickening sludge and covered with valve 10. Excess sludge is removed from well 9 via conduit II. Under the partitions, holes 12 and 13 are made to allow the flow of the wastewater mixture. A guiding device 14 with partitions 15 is mounted in chamber 5. In collection chamber 6, collecting tray 16 is attached to partition 3, from which the cleaned liquid is drained from pipe 17. A rotating truss 18 is installed above the tank 1 and movable screens 19 and 20 are attached to it, immersed in a liquid in chambers 4 to 5 c. They are equipped with blades 21. On the surface of the liquid are turbine aerators 22 and aerating brushes 23. In chamber 6 are located at an acute angle to the axis of the reservoir plate 24. On the screens in the upper part of the blades fortified blades 25 and 26 at an acute angle to its tangent, and in the biosorption chamber, the blades are angled outward, and in the aeration chamber - in the opposite direction. In addition to the blades 21, located along the helix inside and outside the screens, on the same surfaces, the ribs 27 - 30 are reinforced at an acute angle to the axis of the tank I.

The projection screens are equipped with floats 31c with conduit 32 for compressed air.

The station operates as follows.

The initial heat source enters through conduit 7 mixed with activated sludge dispensed through conduit 8 from well 9. In chambers 4 and 5, the wastewater / sludge mixture is transported and saturated with air oxygen using aerators 22 and brushes 23 and enters into compartment 6, where solid The sludge particles precipitate and enter the well 9, and the clarified water through the collecting tray 16 and the pipeline 17 is removed from the structure.

Owing to regular oxygen consumption and relocation in the chambers at the station, optimum hydraulic parameters and kinetics of the cleaning processes are provided.

Claims (2)

1. A biological wastewater treatment plant containing a cylindrical tank divided by coaxially arranged partitions into chambers of biosorption and aeration and settling of the farm with its rotation mechanism, a mixing device attached to it with blades and floats, a baffle tray, and also aerators characterized by that, with the aim of cleaning the degree of purification due to the intensification of the processing processes, the transferring device is made in the form of annular screens with blades and ribs placed on and at an angle U-ZO MI attached to the screen along a helix, the aeration chamber in its lower part is equipped with a damper. 2. A station according to claim 1, characterized in that it is provided with plates arranged in the settling chamber at an angle of 30-45 to the axis of the tank, as well as with a guide vane mounted in the aeration chamber. Sources of information taken into account in the examination 1. Application of Germany N 2349218, cl. C 02 C 1 / O6, 1975. . "5 th / f f / 5-xl fig.Z  eleven FIG. five