CN215137183U

CN215137183U - Secondary sedimentation tank with floating mud removing device

Info

Publication number: CN215137183U
Application number: CN202122809560.XU
Authority: CN
Inventors: 李西周; 蓝杰蕊; 孙海军; 沈友刚
Original assignee: Shandong Chunjiang Environmental Technology Co ltd
Current assignee: Shandong Chunjiang Environmental Technology Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2021-12-14
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a secondary sedimentation tank with a floating mud removal device, which comprises a water inlet pipe, a cylindrical tank body, a funnel-shaped sludge hopper and a sludge discharge pipe, wherein the water inlet pipe is horizontally arranged on the upper part of the tank body and used for introducing water into the tank body; a spraying system is also arranged above the tank body and comprises a water supply main pipe and a plurality of spraying branch pipes communicated with the water supply main pipe, and the spraying branch pipes are provided with spray heads facing to the area surrounded by the slag blocking plate; the device reduces the content of floating impurities in water discharged from the secondary sedimentation tank, so that the discharged water can reach the discharged standard, and the requirement on the discharged water quality is met.

Description

Secondary sedimentation tank with floating mud removing device

Technical Field

The utility model relates to a sludge treatment device, concretely relates to secondary sedimentation tank of mud device is floated in area removal.

Background

The sedimentation tank is used as a common process unit for separating mud and water, is a part of a sewage treatment system, has the characteristics of simple process, simple and convenient operation, small investment, good mud and water separation effect and the like, and is widely applied to the field of water treatment. And the secondary sedimentation tank is used as a subsequent sedimentation tank of the treatment system, after mud and water are separated, the sludge falls into the sludge bucket, if the sludge is stored in the sludge bucket for a long time, nitrogen is generated due to denitrification reaction, and tiny nitrogen bubbles are attached to the sludge, so that the density of the sludge is reduced and the sludge floats to the water surface to form floating mud. After the floating mud is formed, if the floating mud is improperly controlled, the water quality of the effluent of the secondary sedimentation tank can be seriously influenced.

The chinese patent with publication number CN214457074U discloses a sewage sedimentation tank, including the sedimentation tank body, sedimentation tank body lower half is the sedimentation zone that is conical, the mud pipe that the bottom fixedly connected with of sedimentation tank body lateral wall is linked together with the sedimentation zone, the inside of sedimentation tank body is provided with the horizontally clamp plate, the inside of sedimentation tank body still is provided with the drive assembly who drives the clamp plate and go up and down along vertical direction.

Above-mentioned sewage sedimentation tank has the effect of being convenient for discharge mud, but secondary sedimentation tank exhaust water quality still can have impurity such as mud floating, is difficult to accord with the discharged standard, can't satisfy the requirement to discharge water quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a secondary sedimentation tank of mud device is removed in area is provided, reduces the content of floater impurity in the secondary sedimentation tank exhaust water through the device, makes the drainage can reach the exhaust standard, satisfies the requirement to discharge quality of water.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a secondary sedimentation tank with a floating mud removing device comprises a water inlet pipe, a cylindrical tank body, a funnel-shaped sludge hopper and a mud discharging pipe, wherein the water inlet pipe is horizontally arranged at the upper part of the tank body and is used for introducing water into the tank body, the sludge hopper is positioned at the lower side of the tank body and is integrally formed with the tank body, the mud discharging pipe is positioned at the lower part of the sludge hopper and is used for discharging sludge in the sludge hopper,

an annular water outlet weir for leading out drainage water is arranged in the pool body, an annular slag trap for isolating floating mud is horizontally fixed on the inner side of the water outlet weir through a support, and a gap for water outlet is arranged between the water outlet weir and the slag trap; the upper end of the slag trap is higher than the upper end of the effluent weir, and the lower end of the slag trap is lower than the upper end of the effluent weir and higher than the lower end of the effluent weir;

the top of cell body still is equipped with spray system, spray system includes that the water supply is responsible for and is responsible for a plurality of spray branch pipes that are linked together with the water supply, be equipped with the shower nozzle towards the region that the slag trap surrounds on the spray branch pipe.

Preferably, the main water supply pipe is horizontally arranged, and water supply points are respectively arranged at two ends and the middle of the main water supply pipe.

Preferably, the spray branch pipes are horizontally arranged and parallel to each other, and the spray branch pipes are integrally distributed in a circular shape.

Preferably, the spray head is a fan-shaped spray head.

Preferably, the upper edge of the water outlet weir is arranged in a zigzag shape.

Preferably, the inner end of the water inlet pipe is connected with a guide cylinder for guiding the flow direction of inlet water.

The utility model has the advantages of:

first, the utility model discloses a set up the shower nozzle and spray out water, can break up the mud floating, the bubble of release on attaching to the mud floating is eliminated and is made the buoyancy that mud rises, makes mud take place to deposit because of the action of gravity once more, has reduced the content of floater impurity in the secondary sedimentation tank exhaust water, makes the drainage can reach the exhaust standard, has satisfied the requirement to discharge quality of water.

Second, the utility model discloses a set up the slag trap, can effectively keep apart the mud floating, prevent that the mud floating from entering into out the water weir along with the rivers, further reduced the content of floater impurity in the secondary sedimentation tank exhaust water, improved the quality of water of drainage.

Third, the utility model discloses an evenly set up the shower nozzle in the slag trap inboard, realized spraying the area and covered completely, guaranteed not to spray the dead angle, make the water spray of shower nozzle can spray on all mud floats.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of the present invention;

FIG. 2 is a top view of the sprinkler system, slag trap, weir and bracket portion of the present invention;

fig. 3 is a perspective view of the weir portion of the utility model.

In the figure: 1: water supply main pipe, 2: slag trap, 3: effluent weir, 4: a tank body, 5: leg, 6: sludge discharge pipe, 7: sludge bucket, 8: draft tube, 9: inlet tube, 10: water outlet, 11: a bracket, 12: a head, 13: and (4) spraying branch pipes.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in figure 1, the utility model discloses an inlet tube 9, cylindrical cell body 4, infundibulate sludge bucket 7 and sludge discharge pipe 6, the inlet tube 9 level sets up in 4 upper portions of cell body, and the outer end of inlet tube 9 sets up in the outside of cell body 4, and inlet tube 9 is used for introducing water in the cell body 4. The inner end of the water inlet pipe 9 is connected with a guide shell 8 for guiding the flow direction of inlet water, and the guide shell 8 is longitudinally fixed in the middle of the tank body 4. The sludge hopper 7 is positioned at the lower side of the tank body 4 and is integrally formed with the tank body 4, the sludge discharge pipe 6 is positioned at the lower part of the sludge hopper 7, and the inner end of the sludge discharge pipe 6 is communicated with the inner side of the sludge hopper 7 and is used for discharging sludge in the sludge hopper 7. The lower side of the sludge hopper 7 is also provided with a supporting leg 5.

An annular water outlet weir 3 for guiding out drained water is arranged in the pool body 4, the section of the water outlet weir 3 is L-shaped, a water outlet 10 with a flange is arranged on the side wall of the pool body 4, and an annular space enclosed by the water outlet weir 3 and the side wall of the pool body 4 is communicated with the inner end of the water outlet 10. An annular slag trap 2 for isolating floating mud is horizontally fixed on the inner side of the water outlet weir 3 through a bracket 11. The upper end of the slag trap 2 is higher than the upper end of the water outlet weir 3, and the lower end of the slag trap 2 is lower than the upper end of the water outlet weir 3 and higher than the lower end of the water outlet weir 3. Each support 11 is obliquely arranged, one end of each support 11 is fixed with the inner side of the water outlet weir 3, the other end of each support 11 is fixed with the outer side of the slag trap 2, and a gap is reserved between the water outlet weir 3 and the slag trap 2 through the support of the supports 11 and can be used for water outlet. Because the sludge hopper 7 is funnel-shaped, the sludge settled at the bottom of the sludge hopper 7 is subjected to denitrification reaction and then floats upwards by additional bubbles, the formed floating sludge is concentrated at the middle position of the liquid level, and little floating sludge is arranged near the edge of the liquid level. Moreover, the gap between the effluent weir 3 and the slag trap 2 is very small relative to the area of the entire liquid surface, so even if some sludge flows out of the gap with the water flow, the influence on the effluent quality is very little. From this, through setting up slag trap 2, can effectively keep apart the mud floating, prevent that the mud floating from entering into out mill weir 3 along with the rivers, further reduced the content of floater impurity in the secondary sedimentation tank discharged water, improved the quality of water of drainage.

As shown in fig. 2, a spraying system is further arranged above the tank body 4, the spraying system comprises a main water supply pipe 1 and a plurality of spraying branch pipes 13 communicated with the main water supply pipe 1, and the spraying branch pipes 13 are provided with spray heads 12 facing the area surrounded by the slag trap 2.

The main water supply pipe 1 is horizontally arranged, and water supply points are respectively arranged at two ends and the middle of the main water supply pipe 1 so as to ensure that the water pressure and the water quantity in each spraying branch pipe 13 are uniform. The spraying branch pipes 13 are arranged horizontally at equal intervals and are parallel to each other, the spraying branch pipes 13 are vertical to the water supply main pipe 1 and communicated with the vertical intersection point, the spraying branch pipes are distributed in a circular fishbone shape, the length of each spraying branch pipe 13 is different, and two ends of each spraying branch pipe 13 are blocked. A plurality of fan-shaped spray heads 12 are respectively arranged on each spray branch pipe 13 at equal intervals, and all the spray heads 12 are uniformly distributed on the inner side of the slag baffle plate 2, so that the spray area is completely covered, no spray dead angle is ensured, and the water sprayed by the spray heads 12 can be sprayed on all the floating mud. The water is sprayed out by arranging the spray head 12, the floating mud can be scattered, bubbles attached to the floating mud are released, the buoyancy force for making the mud rise is eliminated, the mud is precipitated again under the action of gravity, the content of floating impurities in water discharged by a secondary sedimentation tank is reduced, the drainage can reach the discharge standard, and the requirement on the quality of the discharged water is met.

As shown in FIG. 3, the upper edge of the weir 3 is zigzag, so as to ensure uniform water outlet.

A secondary sedimentation tank of mud device is floated in area, its application method as follows: the mud-water mixed liquid enters the guide shell 8 through the water inlet pipe 9, flows into the sedimentation area of the tank body 4 from top to bottom and starts mud-water separation, and the sludge falls into the sludge hopper 7 downwards under the action of gravity, so that the clear water rises upwards under the pushing of the inlet water. The water sprayed out by the spray head 12 can break up the floating sludge on the upper side of the liquid level, so that bubbles attached to the sludge are released, and the broken sludge sinks again due to gravity to be precipitated; the floating mud which is not scattered is limited by the slag trap 2 and is difficult to enter the effluent weir 3 along with the water flow. Clear water flows out from the water outlet 10 finally, and sludge can be cleaned at the bottom of the sludge hopper 7 finally by opening the sludge discharge pipe 6.

Claims

1. The utility model provides a secondary sedimentation tank of mud device is floated in area, includes inlet tube (9), cylindrical cell body (4), infundibulate sludge bucket (7) and sludge discharge pipe (6), inlet tube (9) level sets up in cell body (4) upper portion, is used for introducing cell body (4) with water in, sludge bucket (7) be located the downside of cell body (4) and with cell body (4) integrated into one piece, sludge discharge pipe (6) are located the lower part of sludge bucket (7), be used for the sludge discharge in sludge bucket (7), its characterized in that:

an annular water outlet weir (3) for leading out drained water is arranged in the pool body (4), an annular slag trap (2) for isolating floating mud is horizontally fixed on the inner side of the water outlet weir (3) through a support (11), and a gap for yielding water is arranged between the water outlet weir (3) and the slag trap (2); the upper end of the slag trap (2) is higher than the upper end of the water outlet weir (3), and the lower end of the slag trap (2) is lower than the upper end of the water outlet weir (3) and higher than the lower end of the water outlet weir (3);

the top of cell body (4) still is equipped with spray system, spray system is responsible for (1) and is responsible for a plurality of spray branch pipe (13) that (1) are linked together with supplying water including supplying water, be equipped with on spray branch pipe (13) towards slag trap (2) regional shower nozzle (12) that centers on.

2. The secondary sedimentation tank with a sludge removal device according to claim 1, wherein: the water supply main pipe (1) is horizontally arranged, and water supply points are respectively arranged at the two ends and the middle part.

3. The secondary sedimentation tank with a sludge removal device according to claim 1, wherein: the spraying branch pipes (13) are horizontally arranged and are parallel to each other, and the whole spraying branch pipes (13) are distributed circularly.

4. The secondary sedimentation tank with a sludge removal device according to claim 1, wherein: the spray head (12) is a fan-shaped spray head (12).

5. The secondary sedimentation tank with a sludge removal device according to claim 1, wherein: the upper edge of the water outlet weir (3) is arranged in a zigzag manner.

6. The secondary sedimentation tank with a sludge removal apparatus according to any one of claims 1 to 5, wherein: the inner end of the water inlet pipe (9) is connected with a guide cylinder (8) for guiding the flow direction of inlet water.