CN211885534U

CN211885534U - Automatic sludge collecting device for solving sludge floating of sewage secondary sedimentation tank

Info

Publication number: CN211885534U
Application number: CN202020445663.5U
Authority: CN
Inventors: 殷银华; 王逸峰; 周学军; 杨军
Original assignee: Hubei Sanning Chemical Co Ltd
Current assignee: Hubei Sanning Chemical Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-11-10
Anticipated expiration: 2030-03-31

Abstract

The utility model relates to a solve two heavy ponds of sewage and float automatic mud collection device of mud, including two heavy ponds, two heavy bottom of the pond are equipped with a mud collection fill, and sewage pipe passes a mud collection fill and arranges two heavy inside tops of pond in, and sewage pipe is located the afterbody of two heavy ponds and arranges in on the water catch bowl, and the water catch bowl outside is equipped with the wash pipe, is equipped with on two heavy pond inner walls and floats the mud collecting box, and two heavy pond upper portion pond edges department is equipped with the overflow plate, floats mud collecting box bottom through floating mud delivery pipe and sludge impoundment intercommunication, the overflow plate outside with mix mud reaction tank intercommunication. The utility model only needs to add a floating mud collecting tank, a flushing water pipe and a cut-off valve on the surface of the secondary sedimentation tank, and has low investment cost; the suspended matters in the effluent are obviously reduced to be below 100mg/L, and the hidden trouble of environmental protection is eliminated.

Description

Automatic sludge collecting device for solving sludge floating of sewage secondary sedimentation tank

Technical Field

The utility model relates to a waste water treatment field, concretely relates to solve two heavy ponds of sewage and float automatic mud collection device of mud.

Background

The waste water produced in the caprolactam production process adopts an A/O treatment process, the waste water enters an anoxic tank and an aerobic tank after pretreatment and hydrolytic acidification, the mixed liquid from the aerobic tank flows into a secondary sedimentation tank water collecting cylinder automatically, mud and water separation is carried out under the action of gravity, sludge is further concentrated in the sedimentation process, then is scraped to a sludge collecting hopper at the bottom of the secondary sedimentation tank by a sludge scraper, and most of the sludge is refluxed to the aerobic tank by a secondary sedimentation tank reflux pump.

Because the wastewater contains benzene, cyclohexanone, cyclohexanol, ammonia, ammonium sulfate and other pollutants, COD and ammonia nitrogen are high, especially cyclic organic matters are difficult to decompose by bacteria, the cyclic organic matters are not completely hydrolyzed and enter an anoxic tank and an aerobic tank to cause partial sludge death, the metabolism of the sludge is accelerated, a large amount of dead sludge is generated in a secondary sedimentation tank and floats on the surface of the secondary sedimentation tank, the sludge sedimentation is not thorough, and a part of sludge floats on the surface of the secondary sedimentation tank to cause the blockage of an online environmental protection analysis facility, the COD of effluent on line abnormally rises, the suspension of the effluent quality is high and cannot reach the effluent quality standard (the third-level discharge standard of the sewage comprehensive discharge standard is less than or equal to 400 mg/L), and a large amount of manpower is consumed to salvage the floating sludge on the surface of the secondary sedimentation tank so as to ensure that the.

Disclosure of Invention

The utility model aims to solve the technical problem that an automatic mud collecting device for solving the mud floating in a sewage secondary sedimentation tank can reduce the labor intensity and ensure the qualified quality of the discharged water.

The utility model provides an adopted technical scheme is:

the utility model provides a solve two heavy ponds of sewage and float automatic mud collection device of mud, including two heavy ponds, two heavy bottom of the pool portion are equipped with the mud collection fill, and sewage pipe passes the mud collection fill and arranges two heavy inside tops of pond in, and sewage pipe is located the afterbody of two heavy ponds and arranges in on the catch bowl, and the catch bowl outside is equipped with wash tub pipe, is equipped with on two heavy pond inner walls and floats the mud collecting box, and two heavy pond upper portion pond edges department is equipped with the overflow plate, floats mud collecting box bottom through floating mud delivery pipe and sludge impoundment intercommunication, the overflow plate outside with mix mud reaction tank intercommunication.

Preferably, the water collecting cylinder is an inverted conical water cylinder.

Preferably, a mud scraper is arranged below the secondary sedimentation tank.

Preferably, the flushing water pipe is arranged in a ring shape, and the flushing water pipe is fixedly arranged on the outer wall of the water collecting barrel through a second support frame.

Further preferably, the flushing water pipe is provided with a plurality of holes, the hole opening direction faces outwards, and the water flow direction is flush with the liquid level of the secondary sedimentation tank.

Preferably, the mud collection hopper also extends to the outside of the secondary sedimentation tank.

Preferably, the flushing water pipe is provided with a stop valve.

Preferably, the floating mud collecting box is fixedly arranged on the inner wall of the secondary sedimentation tank through a first supporting frame.

Preferably, the overflow port of the floating mud collecting box is flush with the liquid level of the secondary sedimentation tank.

Preferably, the sludge collecting hopper is communicated with the aerobic tank through a sludge reflux pump.

The utility model discloses beneficial effect:

1) only a floating mud collecting tank, a flushing water pipe and a shut-off valve are added on the surface of the secondary sedimentation tank, so that the investment cost is low;

2) the mud driving, the mud collecting and the mud discharging can be automatically controlled, so that the labor intensity is reduced;

3) the suspended matters in the effluent are obviously reduced to be below 100mg/L, and the hidden trouble of environmental protection is eliminated.

Drawings

Fig. 1 is the schematic view of the sectional structure of the secondary sedimentation tank of the present invention:

fig. 2 is a schematic view of the overlooking structure of the secondary sedimentation tank of the utility model:

wherein: the device comprises a water collecting cylinder 1, a mud scraper 2, a mud collecting hopper 3, a floating mud collecting box 4, a floating mud discharging pipe 5, an overflow plate 6, a flushing water pipe 7, a cut-off valve 8, a first support frame 9, a second support frame 10 and a secondary sedimentation tank 11.

Detailed Description

Example 1

As shown in attached figures 1 and 2, an automatic sludge collecting device for solving the problem of sludge floating in a sewage secondary sedimentation tank comprises a secondary sedimentation tank 11, a sludge collecting hopper 3 is arranged at the bottom of the secondary sedimentation tank 11, a sewage pipeline penetrates through the sludge collecting hopper 3 and is arranged above the inside of the secondary sedimentation tank 11, the tail part of the sewage pipeline, which is positioned in the secondary sedimentation tank 11, is arranged on a water collecting cylinder 1, a flushing pipe 7 is arranged outside the water collecting cylinder 1, a floating sludge collecting tank 4 is arranged on the inner wall of the secondary sedimentation tank 11, an overflow plate 6 is arranged at the edge of the upper tank of the secondary sedimentation tank 11, the bottom of the floating sludge collecting tank 4 is communicated with a sludge tank through a floating sludge discharge pipe 5, and the outside.

Preferably, the water collecting cylinder 1 is an inverted conical water cylinder.

Preferably, a mud scraper 2 is arranged below the secondary sedimentation tank 11.

Preferably, the flushing water pipe 7 is arranged in a ring shape, and the flushing water pipe 7 is fixedly mounted on the outer wall of the water collecting barrel 1 through a second support frame 10.

Further preferably, a plurality of holes are formed in the flushing water pipe 7, the hole opening direction faces outwards, and the water flow direction is flush with the liquid level of the secondary sedimentation tank 11.

Preferably, the mud collection hopper 3 also extends to the outside of the secondary sedimentation tank 11.

Preferably, the flushing water pipe 7 is provided with a shut-off valve 8.

Preferably, the floating mud collecting box 4 is fixedly arranged on the inner wall of the secondary sedimentation tank 11 through a first support frame 9.

Preferably, the overflow port of the floating sludge collecting box 4 is level with the liquid level of the secondary sedimentation tank 11.

The working principle is as follows: the mixed liquid that the good oxygen pond of sewage came out flows to the water collecting tank 1 by oneself, carry out mud-water separation under the action of gravity, mud is after further concentrating at the settlement in-process, scrape the mud collecting bucket 3 of two heavy ponds 11 bottoms by mud scraper 2, the mud backwash pump with most mud backward flow aerobic tank again, mud subsides thoroughly, it floats on two heavy ponds 11 surfaces to have a part mud, open trip valve 8 on wash pipe 7, it washes to float mud collecting box 4 to drive to float mud, the mud that floats that mud collecting box 4 was accomodate discharges to the sludge impoundment through floating mud delivery pipe 5, the mud collecting box 4 bottom is then walked around to float mud lower part clear water, overflow to muddy mud reaction tank through two heavy ponds overflow baffle 6, realize the clear water reposition of redundant personnel of floating mud and clear water.

The device comprises a water collecting cylinder 1, a mud scraper 2, a mud collecting hopper 3, a floating mud collecting box 4, a floating mud discharging pipe 5, an overflow plate 6, a flushing water pipe 7, a cut-off valve 8, a first support frame 9, a second support frame 10 and a secondary sedimentation tank 11.

Actual operation 1: the quick cut-off valve 8 is opened on a computer for 1 hour at intervals, the flushing time is set to be 1 minute, the surface of the secondary sedimentation tank 11 is flushed every 1 hour at intervals, and the quick cut-off valve 8 is automatically closed by a program after the flushing is carried out for 1 minute.

Actual operation 2: when the operating personnel patrols and examines, the superficial mud of discovery secondary sedimentation pond increases, need shorten the interval time, and the extension is washed time, and quick cut-off valve 8 sets up on the computer and opens interval time half an hour, sets up the washing time and is 2 minutes, and 11 surfaces on the secondary sedimentation pond are washed half an hour at every interval, and program self-closing quick cut-off valve 8 after washing half a minute.

Actual operation 3: when an operator inspects the inspection, the floating mud on the surface of the secondary sedimentation tank 11 is found to be reduced, the interval time needs to be prolonged, the flushing time is shortened, the quick cut-off valve 8 is arranged on a computer for 1 hour, the flushing time is set to be 2 minutes, the surface of the secondary sedimentation tank is flushed every 1 hour, and the quick cut-off valve 8 is automatically closed after the flushing is carried out for 2 minutes.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a solve two heavy ponds of sewage and float automatic mud collection device of mud, includes two heavy ponds (11), and two heavy pond (11) bottoms are equipped with mud collection fill (3), its characterized in that: sewage pipes pass through mud collecting hopper (3) and are arranged above the inner part of a secondary sedimentation tank (11), the tail part of the sewage pipes, which is positioned on the secondary sedimentation tank (11), is arranged on a water collecting cylinder (1), a flushing water pipe (7) is arranged on the outer side of the water collecting cylinder (1), a floating mud collecting tank (4) is arranged on the inner wall of the secondary sedimentation tank (11), an overflow plate (6) is arranged at the edge of the upper part of the secondary sedimentation tank (11), the bottom of the floating mud collecting tank (4) is communicated with a sludge tank through a floating mud discharge pipe (5), and the outer side of the overflow plate (6) is communicated with a mixed mud reaction.

2. The automatic sludge collection device for solving the problem of sludge floating in the secondary sewage sedimentation tank according to claim 1, which is characterized in that: the water collecting cylinder (1) is in an inverted conical water cylinder shape.

3. The automatic sludge collection device for solving the problem of sludge floating in the secondary sewage sedimentation tank according to claim 1, which is characterized in that: a mud scraper (2) is arranged below the secondary sedimentation tank (11).

4. The automatic sludge collection device for solving the problem of sludge floating in the secondary sewage sedimentation tank according to claim 1, which is characterized in that: the washing water pipe (7) is arranged in a ring shape, and the washing water pipe (7) is fixedly arranged on the outer wall of the water collecting barrel (1) through a second support frame (10).

5. The automatic sludge collection device for solving the problem of sludge floating in the secondary sewage sedimentation tank according to claim 4, which is characterized in that: the washing water pipe (7) is provided with a plurality of holes, the hole opening direction faces outwards, and the water flow direction is flush with the liquid level of the secondary sedimentation tank (11).

6. The automatic sludge collection device for solving the problem of sludge floating in the secondary sewage sedimentation tank according to claim 1, which is characterized in that: the sludge collecting hopper (3) also extends to the outer side of the secondary sedimentation tank (11).

7. The automatic sludge collection device for solving the problem of sludge floating in the secondary sewage sedimentation tank according to claim 1, which is characterized in that: the flushing water pipe (7) is provided with a stop valve (8).

8. The automatic sludge collection device for solving the problem of sludge floating in the secondary sewage sedimentation tank according to claim 1, which is characterized in that: the floating mud collecting box (4) is fixedly arranged on the inner wall of the secondary sedimentation tank (11) through a first supporting frame (9).

9. The automatic sludge collection device for solving the problem of sludge floating in the secondary sewage sedimentation tank according to claim 1, which is characterized in that: the sludge collecting hopper (3) is communicated with the aerobic tank through a sludge reflux pump.