Sewage treatment equipment for municipal engineering

Abstract

The utility model discloses sewage treatment equipment for municipal engineering, which comprises a sedimentation tank, an oil sludge scraper, an oil removal tank and an oil delivery pump, the top of the sedimentation tank is open, a track is arranged at the top of the sedimentation tank, and traveling wheels of the oil sludge scraper are mounted on the track; a first rotating roller, a second rotating roller, a third rotating roller and a fourth rotating roller are arranged on the inner wall of the top of the oil removal tank, an annular oil absorption belt is installed on the second rotating roller, the third rotating roller and the fourth rotating roller, and the oil absorption belt penetrates through a gap between the first rotating roller and the second rotating roller; a first oil outlet of the sedimentation tank is connected with an oil inlet of the oil removal tank through a pipeline, the oil delivery pump is arranged on the pipeline between the first oil outlet and the oil inlet, a first water return port of the sedimentation tank is connected with a second water outlet of the oil removal tank through a pipeline, and a water return pump is arranged on the pipeline between the first water return port and the second water outlet. The sewage treatment device can separate oil, water and solids in sewage, so that the sewage treatment efficiency is improved, and the subsequent sewage treatment difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewage treatment equipment technical field, concretely relates to a sewage treatment equipment for municipal engineering. BACKGROUND

[0002] The sedimentation tank is usually used for the first sedimentation in sewage treatment, also called primary sedimentation tank, and is mainly used for reducing the solid concentration in sewage. The difference between the primary sedimentation tank and the secondary sedimentation tank lies in that the primary sedimentation tank is generally arranged after the sand trap and before the aeration tank in the sewage treatment plant, while the secondary sedimentation tank is generally arranged after the aeration tank and before the advanced treatment or discharge. The primary sedimentation tank is the main structure of the first-stage sewage treatment plant, or is arranged in front of the biological treatment structure as the pretreatment structure of the second-stage sewage treatment plant. According to the different water flow directions, the primary sedimentation tank can be divided into the horizontal flow type sedimentation tank, the vertical flow type sedimentation tank, the radial flow type sedimentation tank and the inclined plate and inclined tube sedimentation tank.

[0003] However, for domestic sewage, especially for the sewage from catering, the oil stain in the sewage cannot be separated out by the sedimentation tank, and the sewage containing oil stain can only be treated as a whole, which increases the difficulty of sewage treatment and improves the cost of sewage treatment. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a sewage treatment equipment for municipal engineering, which can separate the oil, water and solid matters in sewage, improve the efficiency of sewage treatment and reduce the difficulty of subsequent sewage treatment.

[0005] The technical scheme is as follows:

[0006] The utility model relates to a sewage treatment equipment for municipal engineering, which comprises a sedimentation tank, a sludge scraper, an oil removal tank, an oil conveying pump, an opening at the top of the sedimentation tank, a track arranged at the top of the sedimentation tank, a first collecting groove arranged on the right inner wall of the sedimentation tank, a sludge ditch arranged at the bottom right of the sedimentation tank, a first oil discharge port, a first water discharge port and a first sludge discharge port arranged on the right side wall of the sedimentation tank, the first collecting groove being arranged above the first water discharge port, the first oil discharge port being opposite to the first collecting groove, the first sludge discharge port being opposite to the sludge ditch, and a first backwater port arranged on the left side wall of the sedimentation tank; an oil inlet arranged on the right side wall of the oil removal tank, a second oil discharge port and a second water discharge port arranged on the left side wall, a second collecting groove arranged on the left inner wall, and the second oil discharge port being opposite to the second collecting groove; first, second, third and fourth rotating rollers arranged on the top inner wall of the oil removal tank, the first and second rotating rollers having the same height, the third and fourth rotating rollers having the same height, the height of the first and second rotating rollers being higher than that of the third and fourth rotating rollers, an annular oil absorption belt being arranged on the second, third and fourth rotating rollers, the oil absorption belt passing through the gap between the first and second rotating rollers, and oil absorption cotton being fixed on the surface of the oil absorption belt; the fourth rotating roller being provided with a rotating motor; the first oil discharge port being connected to the oil inlet through a pipeline, the oil conveying pump being arranged on the pipeline between the first oil discharge port and the oil inlet, the first water discharge port and the first sludge discharge port being respectively provided with a conveying pump and a control valve; the first backwater port being connected to the second water discharge port through a pipeline, the pipeline between the first backwater port and the second water discharge port being provided with a backwater pump, and the second water discharge port being provided with a control valve; the bottom end of the oil removal tank being provided with a second sludge discharge port, and the second sludge discharge port being provided with a control valve; the sludge scraper comprising a fixed support, traveling wheels, first and second adjusting motors, a connecting frame, a long arm frame, a lower scraper, a short arm frame and an upper scraper, the rotating shafts of the two traveling wheels being connected to the fixed support, the traveling wheels being provided with traveling motors, and the traveling wheels of the sludge scraper being arranged on the track; the first and second adjusting motors being fixed on the upper part of the fixed support; the top of the connecting frame being connected to the bottom right of the fixed support, the top of the long arm frame being hingedly connected to the bottom of the connecting frame, and the lower scraper being connected to the bottom end of the long arm frame; one end of a pull rope being connected to a long connecting arm, and the other end of the pull rope being connected to the rotating shaft of the first adjusting motor; the right side of the short arm frame being hingedly connected to the long arm frame, the upper scraper being connected to the left side of the short arm frame, and the short arm frame being located on the left side of the long arm frame; one end of a pull rope being connected to the short arm frame, and the other end of the pull rope being connected to the rotating shaft of the second adjusting motor.

[0007] Further, the rotating shafts of the first, second, third and fourth rotating rollers are respectively connected to connecting frames, and the top of each connecting frame is connected to the top inner wall of the oil removal tank.

[0008] Further, the bottom of the oil removal tank is conical, a sludge tank is arranged at the lower part of the second sludge discharge port, and the second oil discharge port is connected to an oil storage tank through a pipeline.

[0009] The technical effects of the utility model include:

[0010] The utility model realizes the preliminary separation of sewage - oil - sludge, is favorable for valuable oil class recovery in subsequent sewage, alleviates subsequent sewage treatment difficulty.

[0011] The utility model discloses can realize continuous sewage treatment, improve sewage treatment efficiency, be favorable for subsequent processing of sewage. ACCURACY

[0012] Figure 1 It is the structure diagram of sewage treatment equipment for municipal engineering in the utility model.

[0013] Figure 2 It is the structure diagram of oil sludge scraper in the utility model. DETAILED DESCRIPTION

[0014] The following description fully shows the specific implementation scheme of the utility model, so that the person skilled in the art can practice and reproduce.

[0015] As Figure 1 It is the structure diagram of sewage treatment equipment for municipal engineering in the utility model.

[0016] The sewage treatment equipment for municipal engineering includes: sedimentation tank 1, oil sludge scraper 2, oil removal tank 3, oil pump 4, the top opening of sedimentation tank 1, the top of sedimentation tank 1 is provided with track 11, the travel wheel 22 of oil sludge scraper 2 is installed on track 11, and oil removal tank 3 is connected with the body of sedimentation tank 1 through pipeline.

[0017] Sedimentation tank 1 utilizes the different density of oil, water and sludge, and utilizes gravity to preliminarily deposit and separate oil, water and sludge in sewage, greatly reduces the subsequent treatment workload of sewage.

[0018] The right side inner wall of sedimentation tank 1 is provided with first collection groove 12, the bottom right side of sedimentation tank 1 is provided with sludge groove 13, the right side wall of sedimentation tank 1 is provided with first oil outlet 14, first water outlet 15 and first sludge outlet 16 respectively, first collection groove 12 is located at the upper portion of first water outlet 15, first oil outlet 14 is opposite to first collection groove 12, and first sludge outlet 16 is opposite to sludge groove 13. The left side wall of sedimentation tank 1 is provided with first water return port 17.

[0019] The oil removal tank 3 has an oil inlet 31 on its right side wall, a second oil outlet 32 ​​and a second drain outlet 33 on its left side wall, and a second collection trough 34 on its left inner wall, with the second oil outlet 32 ​​directly opposite the second collection trough 34. The top inner wall of the oil removal tank 3 is equipped with a first rotating roller 35, a second rotating roller 36, a third rotating roller 37, and a fourth rotating roller 38. The first and second rotating rollers 35 and 36 are at the same height, as are the third and fourth rotating rollers 37 and 38. The first and second rotating rollers 35 and 36 are higher than the third and fourth rotating rollers 37 and 38. An annular oil-absorbing belt 39 is installed on the second and third rotating rollers 36 and 37 and 38, passing through the gap between the first and second rotating rollers 35 and 36. The fourth rotating roller 38 is equipped with a rotary motor powered by an external power source.

[0020] The first roller 35, the second roller 36, the third roller 37, and the fourth roller 38 are each connected to a connecting frame at their rotating shafts, and the top of the connecting frame is connected to the top inner wall of the oil removal tank 3.

[0021] The surface of the oil-absorbing belt 39 is fixed with oil-absorbing cotton, which is used to separate the oil from the oil-water mixture. The oil-absorbing cotton is made of oleophilic microfiber non-woven fabric, contains no chemical agents, will not cause secondary pollution, and can quickly absorb dozens of times its own weight in oil, organic solvents, hydrocarbons, vegetable oils and other liquids.

[0022] The bottom of the oil removal tank 3 is conical, and a second sludge discharge port is provided at the bottom of the oil removal tank 3. The second sludge discharge port is equipped with a control valve. A sludge pool is provided below the second sludge discharge port for temporary storage of sludge.

[0023] The first oil discharge port 14 is connected to the oil inlet 31 via a pipeline. An oil pump 4 is installed on the pipeline between the first oil discharge port 14 and the oil inlet 31 to transport the oil-water mixture from the sedimentation tank 1 to the oil removal tank 3 for secondary oil and water separation. The first drainage port 15 transports water to the wastewater treatment process via a pipeline. The first sludge discharge port 16 is used to discharge sludge and is connected to the sludge treatment process via a pipeline. The first drainage port 15 and the first sludge discharge port 16 are each equipped with a transfer pump and a control valve to facilitate the control of wastewater and sludge discharge.

[0024] The first return water inlet 17 is connected to the second drain outlet 33 through a pipeline. A return water pump 5 is installed in the pipeline between the first return water inlet 17 and the second drain outlet 33. A control valve is installed in the second drain outlet 33. The control valve is used to control the wastewater discharge flow rate. The return water pump 5, the oil pump 4, and the control valve of the second drain outlet 33 work together to adjust the liquid level in the oil removal tank 3 and the sedimentation tank 1.

[0025] like Figure 2 The diagram shown is a structural schematic of the sludge scraper 2 in this utility model.

[0026] The oil sludge scraper 2 comprises a fixed support 21, traveling wheels 22, a first adjusting motor 23, a second adjusting motor 24, a connecting frame 25, a long arm frame 26, a lower scraper 27, a short arm frame 28 and an upper scraper 29.

[0027] The rotating shafts of the two traveling wheels 22 are connected to the fixed support 21, the traveling wheels 22 are located on the track 11 and are provided with traveling motors; the first adjusting motor 23 and the second adjusting motor 24 are fixed to the upper portion of the fixed support 21.

[0028] The top of the connecting frame 25 is connected to the bottom right side of the fixed support 21, the top of the long arm frame 26 is hinged to the bottom of the connecting frame 25, the lower scraper 27 is connected to the bottom end of the long arm frame 26; one end of the pull rope is connected to the long arm frame 26 and the other end is connected to the rotating shaft of the first adjusting motor 23; the right side of the short arm frame 28 is hinged to the long arm frame 26, the upper scraper 29 is connected to the left side of the short arm frame 28 and the short arm frame 28 is located on the left side of the long arm frame 26; one end of the pull rope is connected to the short arm frame 28 and the other end is connected to the rotating shaft of the second adjusting motor 24.

[0029] When the first adjusting motor 23 rotates, the pull rope is retracted and the long arm frame 26 is rotated by the pull rope, so that the horizontal height of the lower scraper 27 is raised or lowered; when the second adjusting motor 24 rotates, the pull rope is retracted and the short arm frame 28 is rotated by the pull rope, so that the horizontal height of the upper scraper 29 is raised or lowered.

[0030] The traveling wheels 22 drive the oil sludge scraper 2 to move transversely on the track 11, so that the oil sludge scraper 2 is moved as a whole, the sludge and the oil are moved, the sludge deposited at the bottom of the distribution tank 1 is moved and collected to the sludge groove 13 by the lower scraper 27, is output by the sludge discharge port 16 and is output by the conveying pump, the oil floating on the upper portion of the sewage is moved and collected to the collecting groove 12 by the upper scraper 29 and is output to the oil removal tank 3 by the oil conveying pump 4, and the sewage is discharged through the first water discharge port 15 and is conveyed to the sewage treatment equipment for further treatment.

[0031] Through the combination of the above-mentioned equipment, the solid-containing and oil-containing sewage can be separated efficiently, continuously, purely physically and automatically.

[0032] The working process of the utility model is as follows:

[0033] 1, the sewage enters the distribution tank 1 through the pipeline, under the action of gravity, the sewage is preliminarily separated into oil, water and sludge, the pipeline connected to the first oil discharge port 14 conveys the separated oil-water mixture to the oil removal tank 3 by the oil conveying pump 4;

[0034] The oil phase, the water phase and the sediment are delivered by opening the control valves (solenoid valves) of the first oil outlet 14, the first water outlet 15 and the first sludge outlet 16 and starting the delivery pump.

[0035] (1) After the sewage enters the distribution tank 1, the traveling motor is started, and the traveling wheel 22 drives the oil sludge scraper 2 to move to the left side of the distribution tank 1. When the oil sludge scraper 2 reaches the set position, the traveling motor is stopped.

[0036] (2) The first adjusting motor 23 is started, and the long-arm frame 26 is rotated by the pull rope to adjust the horizontal height of the lower scraper 27 to the bottom of the distribution tank 1. The second adjusting motor 24 is started, and the short-arm frame 28 is rotated by the pull rope to adjust the horizontal height of the upper scraper 29 to the height of the floating oil liquid.

[0037] (3) The traveling motor is started, and the traveling wheel 22 drives the oil sludge scraper 2 to move to the right side. When the oil sludge scraper 2 reaches the set position, the traveling motor is stopped. During the movement of the oil sludge scraper 2 to the right side, the lower scraper 27 pushes the sludge deposited at the bottom of the distribution tank 1 to the right side, and the sludge enters the sludge ditch 13. The upper scraper 29 pushes the oil liquid to the right side, and the oil-water mixture of the oil liquid and water enters the collection tank 12.

[0038] 2. The oil-water mixture from the distribution tank 1 enters the oil removal tank 3 through the oil inlet 31. The oil liquid in the oil-water mixture is absorbed by the oil absorption belt 39 to perform secondary water-oil separation. The sewage is discharged from the second water outlet 33 and sent to the sewage treatment / reuse to the distribution tank 1. The oil liquid is delivered to the oil storage tank through the pipeline at the second oil outlet 32 for storage and reuse.

[0039] The rotating motor drives the fourth rotating roller 38 to rotate, and the fourth rotating roller 38 drives the oil absorption belt 39 to move. The oil absorption belt 39 drives the second rotating roller 36 and the third rotating roller 37 to rotate. The oil absorption belt 39 absorbs the oil liquid floating on the surface of the oil-water mixture. When the oil absorption belt 39 moves between the first rotating roller 35 and the second rotating roller 36, the oil absorption belt 39 is extruded by the first rotating roller 35 and the second rotating roller 36. The oil liquid drops from the oil absorption belt 39 into the second collection tank 34 and is discharged through the second oil outlet 32 and delivered to the oil storage tank through the pipeline for storage.

[0040] The terms used in the utility model are illustrative and non-limiting terms. Since the utility model can be embodied in various forms without departing from the spirit or essence of the technical scheme, it should be understood that the above examples are not limited to any of the above details, but should be interpreted broadly within the spirit and scope defined by the appended claims, and therefore all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A sewage treatment device for municipal engineering, characterized in that, include: The system includes a sedimentation tank, an oil sludge scraper, an oil removal tank, and an oil pump. The sedimentation tank has an opening at the top and a track at the top. A first collection trough is located on the inner right side of the sedimentation tank, and a sludge ditch is located on the right bottom side. The right side wall of the sedimentation tank has a first oil discharge port, a first water discharge port, and a first sludge discharge port. The first collection trough is located above the first water discharge port, with the first oil discharge port directly opposite the first collection trough and the first sludge discharge port directly opposite the sludge ditch. The left side wall of the sedimentation tank has a first return water inlet. The oil removal tank has an oil inlet on the right side wall, a second oil discharge port and a second water discharge port on the left side wall, and a second collection trough on the inner left side wall, with the second oil discharge port directly opposite the second collection trough. The inner top wall of the oil removal tank has a first, second, third, and fourth rotating rollers. The first and second rollers are at the same height, as are the third and fourth rollers. The height of the roller is higher than that of the third and fourth rollers. An annular oil-absorbing belt is installed on the second, third, and fourth rollers. The oil-absorbing belt passes through the gap between the first and second rollers. Oil-absorbing cotton is fixed on the surface of the oil-absorbing belt. The fourth roller is equipped with a rotary motor. The first oil outlet is connected to the oil inlet through a pipeline. An oil pump is installed on the pipeline between the first oil outlet and the oil inlet. The first drain outlet and the first sludge outlet are respectively equipped with a delivery pump and a control valve. The first return water outlet is connected to the second drain outlet through a pipeline. A return water pump is installed on the pipeline between the first return water outlet and the second drain outlet. The second drain outlet is equipped with a control valve. The bottom of the oil removal tank is equipped with a second sludge outlet, which is also equipped with a control valve. The sludge scraper includes: a fixed bracket, a traveling wheel, a first adjusting motor, a second adjusting motor, a connecting frame, a long arm frame, a lower scraper, a short arm frame, and an upper scraper. The shafts of the two traveling wheels are connected to the fixed bracket. The traveling wheels are equipped with traveling motors, and the traveling wheels of the sludge scraper are mounted on the track. The first and second adjusting motors are fixed to the upper part of the fixed bracket. The top of the connecting frame is connected to the bottom right side of the fixed bracket, the top of the long arm frame is hinged to the bottom of the connecting frame, and the lower scraper is connected to the bottom end of the long arm frame. One end of the pull rope is connected to the long connecting arm, and the other end is connected to the shaft of the first adjusting motor. The right side of the short arm frame is hinged to the long arm frame, and the upper scraper is connected to the left side of the short arm frame. The short arm frame is located to the left of the long arm frame. One end of the pull rope is connected to the short arm frame, and the other end is connected to the shaft of the second adjusting motor.

2. The municipal engineering sewage treatment equipment as described in claim 1, characterized in that, The first, second, third, and fourth rollers are each connected to a connecting frame at their shafts, and the top of the connecting frame is connected to the top inner wall of the oil removal tank.

3. The municipal engineering sewage treatment equipment as described in claim 1, characterized in that, The bottom of the oil tank is conical, and a sludge pool is set below the second sludge outlet. The second oil outlet is connected to an oil storage tank through a pipeline.

Images