CN219128380U

CN219128380U - Reinforced sedimentation radial sedimentation tank of sewage treatment plant

Info

Publication number: CN219128380U
Application number: CN202222994968.3U
Authority: CN
Inventors: 曲智
Original assignee: DALIAN DAKAI SEWAGE TREATMENT CO LTD
Current assignee: DALIAN DAKAI SEWAGE TREATMENT CO LTD
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-06-06
Anticipated expiration: 2032-11-10

Abstract

A reinforced sedimentation radial sedimentation tank of a sewage treatment plant belongs to the technical field of sewage treatment. The reinforced sedimentation radial sedimentation tank of the sewage treatment plant comprises a tank body, a water distribution device and a stirring device. The sedimentation tank can distribute water uniformly by arranging the water distributor, and effectively solves the problem of poor mud-water separation effect in the central area of the sedimentation tank caused by large water inflow of the sedimentation tank. The water distributor is provided with a plurality of water outlets for upward water outflow, and the upper part of the water outlets is provided with the arc-shaped flow blocking cover, so that the water flow direction can be changed, the impact force of the water flow is reduced, and the problem that the water inflow turbulence impacts the sludge area at the bottom of the sedimentation tank is effectively solved. The water distributor is provided with the flow baffle above, the impact force of water flow can be further reduced through the action of the inclined plate or the inclined tube on the flow baffle, meanwhile, the sedimentation of sludge particles is promoted through the friction action of the inclined plate or the inclined tube, and the mud-water separation effect of the sedimentation tank is effectively enhanced.

Description

Reinforced sedimentation radial sedimentation tank of sewage treatment plant

Technical Field

The utility model relates to a reinforced sedimentation radial sedimentation tank of a sewage treatment plant, and belongs to the technical field of sewage treatment.

Background

The radial flow sedimentation tank is a common sedimentation device used for removing suspended matters in water in the sewage treatment process. With the development of economy, the sewage treatment capacity is increased year by year, a sedimentation tank with a middle inlet and a peripheral outlet (water is discharged from the periphery of the middle inlet) is paid more attention, and the superiority of the sedimentation tank is gradually reflected. In a traditional radial flow secondary sedimentation tank (middle inlet and outlet), an activated sludge mixed solution is fed from the middle part of the radial flow sedimentation tank, water flow is directly conveyed to the bottom of the sedimentation tank, turbulence is formed in the process, impact is generated on a sludge area at the bottom of the sedimentation tank, and disturbance is caused on settled sludge, so that the sludge sedimentation effect is affected. In addition, the traditional radial flow secondary sedimentation tank (middle-inlet peripheral-outlet type) also has the condition of uneven water distribution, so that the hydraulic load near the center of the secondary sedimentation tank is larger, the Chi Bianshui force load is smaller, when the water inflow is larger, the mud-water separation effect in the central area is further poor, and the SS of the secondary sedimentation tank water is higher.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides the reinforced sedimentation radial sedimentation tank of the sewage treatment plant, which can uniformly distribute water by arranging a water distributor, and effectively solves the problem of poor mud-water separation in the central area of the sedimentation tank when the water inflow is large. The upper end of the water distributor is provided with the water outlet head flow blocking cover, so that the problem that the inflow turbulence impacts the compressed sludge area at the bottom of the sedimentation tank can be effectively solved. Meanwhile, a flow baffle is arranged above the water distributor, so that the separation effect of the mud and water in the sedimentation tank is further enhanced.

The technical scheme adopted by the utility model is as follows: the utility model provides a sewage treatment plant enhanced precipitation radial sedimentation tank includes cell body, water distribution device and agitating unit, and the periphery of the play water weir at cell body top sets up out the basin, and the bottom of cell body sets up V type collection mud groove, water distribution device contains inlet tube, water distributor and water stopper, and the internal connection water distributor of cell body is inserted to the inlet tube, sets up a plurality of delivery ports on the water distributor, and the upper portion of every delivery port sets up curved stream blocking cover, and the water stopper is established in water distributor upper portion.

The stirring device comprises a driving motor, a stirring shaft and a scraping plate, wherein the driving motor is arranged on a bearing steel beam at the top of the tank body, and the driving motor is connected with the V-shaped scraping plate at the bottom of the tank body through the stirring shaft.

In some specific embodiments, the water distributor comprises 2-6 water distribution pipes which are communicated with each other, and the bottom of the flow blocking cover is fixed on the water outlet or the water distribution pipes.

In some embodiments, the flow stopper adopts a honeycomb inclined plate or a honeycomb inclined tube structure. The middle part of the baffle is provided with a hollow structure for placing the stirring shaft, and the front and back or left and right sides of the stirring shaft can be respectively provided with a baffle for the square tank. When the inflow of the sedimentation tank is suddenly increased, the arc-shaped flow blocking cover can reduce the impact force once, and the flow blocking device can reduce the impact force twice.

In some specific embodiments, the water outlet on the water outlet tank is connected with the water outlet pipe through a water outlet valve, and the outlet of the sludge collecting tank is connected with a sludge discharge pipe through a sludge discharge pump.

The beneficial effects of the utility model are as follows: the reinforced precipitation radial sedimentation tank of the sewage treatment plant comprises a tank body, a water distribution device and a stirring device, wherein a water outlet groove is formed in the periphery of a water outlet weir at the top of the tank body, a V-shaped sludge collecting groove is formed in the bottom of the tank body, the water distribution device comprises a water inlet pipe, a water distributor and a flow baffle, the water inlet pipe is inserted into the internal connection water distributor of the tank body, a plurality of water outlets are formed in the water distributor, an arc-shaped flow baffle cover is arranged on the upper portion of each water outlet, and the flow baffle is arranged on the upper portion of the water distributor. The sedimentation tank can distribute water uniformly by arranging the water distributor, and effectively solves the problem of poor mud-water separation effect in the central area of the sedimentation tank caused by large water inflow of the sedimentation tank. The water distributor is provided with a plurality of water outlets for upward water outflow, and the upper part of the water outlets is provided with the arc-shaped flow blocking cover, so that the water flow direction can be changed, the impact force of the water flow is reduced, and the problem that the water inflow turbulence impacts the sludge area at the bottom of the sedimentation tank is effectively solved. The water distributor is provided with the flow baffle above, the impact force of water flow can be further reduced through the action of the inclined plate or the inclined tube on the flow baffle, meanwhile, the sedimentation of sludge particles is promoted through the friction action of the inclined plate or the inclined tube, and the mud-water separation effect of the sedimentation tank is effectively enhanced. The secondary sedimentation tank has good mud-water separation effect and safe and stable operation.

Drawings

FIG. 1 is a schematic diagram of a reinforced sedimentation radial sedimentation tank of a sewage treatment plant.

Fig. 2 is a top view of the water distributor.

Fig. 3 is a perspective view of the baffle housing.

In the figure: 1. the device comprises a tank body 2, a water inlet pipe 3, a water distributor 4, a water outlet 5, a flow blocking cover 6, a flow blocking device 7, a bearing steel beam 8, a driving motor 9, a stirring shaft 10, a mud scraping plate 11, a water outlet weir 12, a water outlet tank 13, a water outlet pipe 14, a water outlet valve 15, a mud collecting tank 16, a mud discharging pipe 17 and a mud discharging pump.

Detailed Description

The utility model is described below with reference to the drawings and the detailed description:

fig. 1 shows a schematic structure of a reinforced sedimentation radial sedimentation tank of a sewage treatment plant. In the figure, the reinforced sedimentation radial sedimentation tank of the sewage treatment plant comprises a tank body 1, a water distribution device and a stirring device, wherein a water outlet groove 12 is formed in the periphery of a water outlet weir 11 at the top of the tank body 1, a V-shaped mud collecting groove 15 is formed in the bottom of the tank body 1, the water distribution device comprises a water inlet pipe 2, a water distributor 3 and a flow baffle 6, the water inlet pipe 2 is inserted into the water distributor 3 of the tank body 1, a plurality of water outlets 4 are formed in the water distributor 3, an arc-shaped flow baffle cover 5 is arranged at the upper part of each water outlet 4, and the flow baffle 6 is arranged at the upper part of the water distributor 3. The water outlet 14 on the water outlet tank 12 is connected with the water outlet pipe 13 through a water outlet valve, and the outlet of the sludge collecting tank 15 is connected with the sludge discharging pipe 16 through a sludge discharging pump 17.

The stirring device comprises a driving motor 8, a stirring shaft 9 and a scraping plate 10, wherein the driving motor 8 is arranged on a bearing steel beam 7 at the top of the tank body 1, and the driving motor 8 is connected with the V-shaped scraping plate 10 at the bottom of the tank body 1 through the stirring shaft 9.

The water distributor 3 comprises 6 water distribution pipes 3a which are communicated with each other, and the bottom of the flow blocking cover 5 is fixed on the water distribution pipes 3a (as shown in figures 2 and 3). The flow stopper 6 adopts a honeycomb inclined tube structure.

The working process of the reinforced precipitation radial sedimentation tank of the sewage treatment plant comprises the following steps: the water inlet valve on the water inlet pipe 2 is opened, the mud-water mixture flows into the water distributor 3 in the secondary sedimentation tank from the water inlet pipe 2, the mud-water mixture flows out from the water outlet 4 on the water distributor 3, the flowing mud-water mixture has larger impulse, the impulse can be fully counteracted by the arc-shaped flow blocking cover 5 above the water outlet, the mud-water mixture with counteracted impulse is subjected to mud-water separation in the secondary sedimentation tank main body structure, most of sludge is deposited at the bottom of the secondary sedimentation tank main body structure, and a small part of sludge is efficiently intercepted by the flow blocking device 6 in the rising process and is settled again. When the sludge sedimentation reaches a certain amount, the driving motor is started to operate the mud scraping plate 10 at the bottom of the tank, and the sludge around the tank wall is hung in the sludge collecting groove 15, so that the bottom of the secondary sedimentation tank body 1 can be prevented from generating dead sludge. The sludge pump is turned on, and the sludge in the sludge collection tank 15 is discharged through the sludge discharge pipe 16. The supernatant fluid after the reinforced separation by the water stopper overflows from the annular water outlet weir to the water outlet tank, the water outlet valve 14 is opened, and the clean water in the water outlet tank 12 flows out from the water outlet pipe 13.

Claims

1. The reinforced sedimentation radial sedimentation tank of the sewage treatment plant comprises a tank body (1), wherein a water outlet groove (12) is formed in the periphery of a water outlet weir (11) at the top of the tank body (1), a V-shaped sludge collecting groove (15) is formed in the bottom of the tank body (1), and the reinforced sedimentation radial sedimentation tank is characterized by further comprising a water distribution device and a stirring device, wherein the water distribution device comprises a water inlet pipe (2), a water distributor (3) and a flow baffle (6), the water inlet pipe (2) is inserted into the tank body (1) and is internally connected with the water distributor (3), a plurality of water outlets (4) are formed in the water distributor (3), an arc-shaped flow baffle cover (5) is arranged at the upper part of each water outlet (4), and the flow baffle (6) is arranged at the upper part of the water distributor (3);

the stirring device comprises a driving motor (8), a stirring shaft (9) and a scraping plate (10), wherein the driving motor (8) is arranged on a bearing steel beam (7) at the top of the tank body (1), and the driving motor (8) is connected with the V-shaped scraping plate (10) at the bottom of the tank body (1) through the stirring shaft (9).

2. The reinforced sedimentation radial sedimentation tank of a sewage treatment plant according to claim 1, wherein the water distributor (3) comprises 2-6 water distribution pipes (3 a) which are communicated with each other, and the bottom of the flow blocking cover (5) is fixed on the water outlet (4) or the water distribution pipes (3 a).

3. The reinforced sedimentation radial sedimentation tank of a sewage treatment plant according to claim 1, wherein the flow baffle (6) adopts a honeycomb sloping plate or a honeycomb sloping tube structure.