SU1726392A1 - Apparatus for biochemically cleaning waste water - Google Patents

Abstract

This invention relates to biochemical purification by biofiltration. The goal is to increase cleaning efficiency and operational reliability. The device consists of a body 1 supported by a cylindonic tank 2, divided by a vertical partition 3 into chambers 4 and 5 of salinity and settling. In the center of the device there is a vertical guide tube 6 connected to the sprinkler 7, in the lower part of which a rotor 8 is placed on a vertical shaft with a drive. A conical partition 9 is installed under the guide tube 6 separating the mineralization chamber 4 from the mineralized sludge collecting chamber 10. The annular gap 11, which serves to allow the passage of liquid from the mineralization chamber to the settling chamber, is blocked by a perforated shell 12. The device is filled with loading 13 in the form of granules of lightweight porous synthetic material. In the guide tube 6 there is an annular slot 14 with a guide visor above it. The device is equipped with a pipe 16, which serves to deliver the initial mass, on which the flow regulator 17 is mounted. Along the perimeter of the tank 2 there is a tray 18 for collecting the clarified liquid with a pipe 19 for discharging it. The precipitated mineralized sediment is discharged through the pipe 20. In the lower wall of the irrigator 7 there are holes 21. On the vertical shaft of the rotor 8 in the upper part there is an impeller 22. 1 Cp f-ly, 1 ill. sl C

Description

This invention relates to biochemical wastewater treatment by biofiltration.

The known device for the biochemical treatment of wastewater consists of a casing resting on a cylinder-conical tank divided by a vertical semi-submersible partition into zones of salinity and sedimentation. In the center of the device there is a vertical guide pipe connected to the sprinkler, in the lower

parts of which on a vertical shaft with a drive placed an axial rotor. A conical partition is installed under the guide pipe, which separates the mineralization zone from the mineralized sediment collection zone. Between the vertical partition and the conical partition there is an annular gap for the passage of fluid from the mineralization zone to the sedimentation zone. The device is filled with filtering feed in the form of light porous synthetic granules.

CHE ON CJ Yu

YU

Yu

floating material on the fluid that fills the bottom of the hull. An annular slot with a visor above it is provided in the guide tube. The device is equipped with a pipe for supplying the initial mass, a pipe for discharging mineralized sediment, an annular tray for collecting the liquid fraction and a pipe for discharging the clarified liquid. In the bottom wall of the irrigator, made in the form of a conical diffuser, there are holes.

The disadvantages of the known device are low operational reliability and insufficient cleaning efficiency.

The aim of the invention is to increase the cleaning efficiency and operational reliability.

The goal is achieved by the fact that in a known device comprising a housing supported by a cylindrical tank divided by a vertical semi-submersible partition into zones of salinity and sedimentation, the central guide tube connected to the sprinkler, the bottom surface of which is made perforated, and in the lower part there is an annular slot with a guide visor and an axial rotor, a conical partition mounted under the pipe, a load, a filling body, mass supply pipes, a filtrate outlet and a wasp ka according to the invention provided with a perforated vertical partition sidewall, lowered to the conical portion of the vessel, the rotor shaft mounted on the sprinkler impeller source liquid supply pipe is equipped with a device controlling the flow and the lower edge of the loading column flooded to a level of the annular gap with the guide visor. The dimensions of the perforation of the shell are smaller than the dimensions of the loading element

The drawing shows a longitudinal section of the device.

The device for biochemical wastewater treatment consists of a body 1 supported on a cylinder-conical tank 2, divided by a vertical semi-submersible partition 3 on chambers 4 and 5 of salinity and sedimentation. In the center of the device there is a vertical guide tube 6 connected to the sprinkler 7, in the lower part of which a rotor 8 is placed on a vertical shaft with a drive. A conical partition 9 is installed under the guide tube 6 separating the mineralization chamber 4 from the mineralized sludge collecting chamber 10. Ring slot 11,

serving for the passage of fluid from the chamber 4 of salinity to the settling chamber 5, blocked by a perforated shell 21 connected to the partition 3 and lowered

to the conical part of the cylindrical reservoir 2.

The device is filled with loading 13 in the form of light granules (1 g / cm of porous synthetic material. In the guide tube 6 there is an annular slot 14 with a guide visor 15 above it. The device is equipped with a pipe 16 serving to supply the initial mass. On the pipe 16 is installed flow controller 17 (gate valve,

5 valve, throttle valve, etc.). Along the perimeter of the tank 2 there is a tray 18 for collecting the clarified liquid with a pipe 19 for discharging it. The precipitated mineralized sediment is discharged through pipe 20. In the lower wall of the irrigator 7, made in the form

0 conical diffuser, there are holes 21. On the vertical shaft of the rotor 8 in the upper part, above the irrigator 7, the impeller 22 is installed.

The device works as follows.

The liquid to be cleaned through pipe 16 through flow regulator 17 goes under guide pipe 6, from where rotor 8 is fed into the upper part of the structure and distributed by irrigator 7 over loading surface 13. During spraying, active- occurs. Forced aeration of the stream by air pumped by the impeller 22.

Past loading water and washed off

5 surface loading particles of biomass. They enter the mineralization chamber 4, where water purification and mineralization of biomass occurs. Recirculating water flow is vented to the guide tube.

0 6 through an annular slot with a guide visor 14, and purified water through an annular slot 11, blocked by a perforated shell 12, enters the settling chamber 5. The presence of perforated

The 5 partitions reduce the speed of the fluid movement, which contributes to the intensification of the mass deposition process already in the chamber 4 and, as a result, in the chamber 5. The dimensions of the perforations do not allow large particles and the load to enter the chamber 5. The partial fluid through the threshold is poured into the tray 18 and is discharged through the pipe 19. The flow regulator 17 sets the optimum thickness of the overflow layer,

5 prevents the removal of suspended particles from the sedimentation chamber. The precipitate slides along the conical bottom into the sediment collection chamber, from where it is removed through pipe 20. Loading granules 13 ejected by recirculation-v

The flow of water is entrained in the annular gap with the guide visor 14, due to the flooding of the lower edge of the loading column to its level. Then, through perforations 21, the sprinkler 7 enters the upper part of the loading column, where, together with the recycled liquid, the air flow generated by the impeller 22 is actively aerated. In the process of movement, the granules in the turbulent flow are washed off the biomass particles, and the aeration promotes its oxidation and mineralization.

Thus, reducing the velocity of the fluid in the slit 11, the presence of aeration, flow control and ensuring reliable recycling of the load prevents the silting of the load, increases the degree of purification by preventing the formation of anaerobic zones in the load and intensifying the process of mineralization and sedimentation.

optimal costs through the device and improve its operational reliability.

Claims (2)

1. Device for biochemical wastewater treatment, auth.St. No. 1110756, characterized in that, in order to increase cleaning efficiency and operational reliability, the vertical partition is provided with a perforated shell lowered to the conical part of the tank, the rotor is equipped with an impeller mounted on the shaft above the sprinkler, and the source liquid supply pipe is equipped with a flow regulator The lower edge of the loading column is located near the annular gap with a guide visor. 2. The device according to claim 1, about tl and h and y sh e with the fact that the dimensions of the perforation of the shell smaller than the size of the elements of the load. 22 -J