Rotational flow tank system for treating turbid circulating water in iron and steel enterprises

Abstract

The utility model discloses a rotational flow pool system for treating turbid circulating water in iron and steel enterprises, which comprises rotational flow equipment for receiving the turbid circulating water, forming rotational flow and separating the rotational flow into a liquid phase and a solid phase; the functional bin is provided with functional equipment and is used for removing an oil mixture from the turbid circulating water and discharging a separated water phase; the slag body removing equipment is used for removing solid-phase slag bodies separated by the cyclone equipment; the functional equipment comprises a lifting pump for discharging a water phase after turbid circulating water separation; the oil collecting device is used for separating an oil mixture in the turbid circulating water; the gas dissolving device is used for forming gas dissolving water and mixing the gas dissolving water with turbid circulating water to form turbid circulating water mixed liquid for cyclone separation, a functional bin is integrated in a cyclone system, and a liquid phase without an oil mixture can be discharged, so that the cyclone system can effectively remove slag such as iron oxide scale with relatively high density in the turbid circulating water, and the separation efficiency of the turbid circulating water is improved. Suspended particles and floating oil with small density can be effectively removed in the process, the working efficiency is improved, and deterioration of water quality is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel enterprise wastewater treatment technical field especially relates to a kind of for steel enterprise to handle turbid ring water's cyclone tank system. BACKGROUND

[0002] Turbid ring water is generated in the production process of steel enterprise, and contains a large amount of iron oxide scale, oil, suspended matter and other sundries. In the prior art, the treatment of turbid ring water is generally carried out by a cyclone tank system, which separates the sundries with high density such as iron oxide scale from the bottom by centrifugal force generated by liquid cyclone, to achieve the effect of cyclone treatment.

[0003] However, in addition to the sundries with high density such as iron oxide scale, turbid ring water also contains oil stains, particles and other substances with relatively low density. Therefore, the liquid phase of turbid ring water treated by the traditional cyclone process needs to be further separated, resulting in a long treatment process, a large occupied area, low treatment efficiency and increased treatment cost of turbid ring water. That is, the existing turbid ring water treatment process cannot effectively remove small particles of iron oxide scale, suspended matter and floating oil in turbid ring water, and the subsequent phenomenon of deteriorated water quality may affect environmental protection requirements.

[0004] Therefore, it is necessary to improve the existing turbid ring water treatment system, which can effectively remove the sundries with high density such as iron oxide scale in turbid ring water, and also effectively remove suspended particles and floating oil with small density in the process, improve work efficiency, reduce process cost and prevent water quality deterioration, and meet environmental protection requirements. SUMMARY

[0005] In view of the shortcomings of the existing cyclone tank, the utility model aims to provide a cyclone tank system for treating turbid ring water in a steel enterprise, which can effectively remove the sundries with high density such as iron oxide scale in turbid ring water, and also effectively remove suspended particles and floating oil with small density in the process, improve work efficiency, reduce process cost and prevent water quality deterioration, and meet environmental protection requirements.

[0006] To achieve the purpose of the utility model, the utility model provides a cyclone tank system for treating turbid ring water in a steel enterprise, which comprises:

[0007] A cyclone device receives turbid ring water and forms a cyclone separation into liquid phase and solid phase.

[0008] A functional bin is provided with functional equipment for removing oil mixture from turbid ring water and discharging water phase after separation.

[0009] A slag removal device is used to remove the solid phase slag after separation of the cyclone device.

[0010] Further, the functional compartment is located in the cyclone device and above the liquid level of the treated liquid.

[0011] Further, the functional device comprises:

[0012] A lifting pump is arranged to discharge the water phase after the turbid ring water is separated;

[0013] An oil collecting device is arranged to separate the oil mixture in the turbid ring water;

[0014] A gas dissolving device is arranged to form the gas dissolved water and mix with the turbid ring water to form the turbid ring water mixture for cyclone separation.

[0015] Further, the gas source of the gas dissolving device is provided by the gas storage tank in the functional compartment; and the residue removing device is a lifting device.

[0016] Further, the cyclone device is an inner-rotation type cyclone device comprising an inner cylinder and an outer cylinder, and the turbid ring water mixture is introduced into the inner cylinder along the tangential direction of the iron channel and forms a cyclone;

[0017] The functional compartment is located in the space between the inner cylinder and the outer cylinder, the bottom of the inner cylinder is an open structure and communicates with the bottom of the outer cylinder, the bottom of the outer cylinder forms a residue storage space, the liquid phase after the turbid ring water mixture is cyclone separated enters the space between the inner cylinder and the outer cylinder, and the functional compartment is located in the space between the inner cylinder and the outer cylinder and above the liquid level of the liquid phase.

[0018] Further, the lower part of the inner cylinder is a conical cylinder, and a plurality of strip-shaped open grooves for communicating the inner cylinder and the outer cylinder are arranged in the circumferential direction of the conical cylinder; and the bottom of the outer cylinder is a reverse conical structure and forms the residue storage space.

[0019] Further, the cyclone device is an outer-rotation type cyclone device comprising an inner cylinder and an outer cylinder, and the turbid ring water mixture is introduced into the outer cylinder along the tangential direction of the iron channel and forms a cyclone;

[0020] The inner cylinder comprises an upper inner cylinder and a lower inner cylinder, the bottom of the outer cylinder forms a residue storage space, the liquid phase after the turbid ring water mixture is cyclone separated enters the inner cylinder, the lower part of the upper inner cylinder and the outer cylinder form a closed functional compartment platform, and the functional compartment is located above the functional compartment platform.

[0021] The lower inner cylinder comprises an upper cylinder layer and a lower cylinder layer with a larger diameter than the upper cylinder layer, the upper cylinder layer and the lower cylinder layer partially overlap in the axial direction and form an annular gap therebetween, and the lower cylinder layer has a set distance from the outer cylinder, and the lower part of the lower cylinder layer has a set distance from the bottom of the outer cylinder.

[0022] Further, the outer cylinder has a local outward protrusion in the radial direction, and a baffle is arranged between the outer cylinder and the inner cylinder to form a lifting pump working space, and the baffle is provided with an opening at a set height for guiding the liquid phase to the lifting pump working space.

[0023] Further, the bottom edge of the lower cylinder layer is locally bent to form a frustum structure corresponding to the inverted frustum bottom of the outer cylinder, and the bottom of the outer cylinder is an inverted frustum bottom and forms the slag body storage space.

[0024] Further, the lifting pumps are distributed according to a set density, the oil collecting device is a disc oil skimmer or a steel belt oil skimmer, and the dissolved air device is a dissolved air flotation device.

[0025] The cyclone pool system for treating turbid circulating water of a steel enterprise integrates a function bin for treating suspended particles and floating oil (floating oil mixture) in the cyclone system, can discharge the liquid phase after removing the oil mixture, can effectively remove slag materials such as iron oxide scale with large density in the turbid circulating water, can also effectively remove suspended particles and floating oil with small density in the process, improves work efficiency, reduces process cost, prevents and treats water quality deterioration, and meets environmental protection requirements. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a top view of the inner-rotation type cyclone pool of the embodiment of the utility model;

[0027] Figure 2 is a side view of the inner-rotation type cyclone pool of the embodiment of the utility model;

[0028] Figure 3 is a top view of the outer-rotation type cyclone pool of the embodiment of the utility model;

[0029] Figure 4 is a side view of the outer-rotation type cyclone pool of the embodiment of the utility model.

[0030] The drawings are explained as follows: 1, outer cylinder of the inner-rotation type cyclone pool; 2, inner cylinder of the inner-rotation type cyclone pool; 1', outer cylinder of the outer-rotation type cyclone pool; 2', inner cylinder of the outer-rotation type cyclone pool; 2'01, upper inner cylinder; 2'02, lower inner cylinder; 2'021, upper cylinder layer; 2'022, lower cylinder layer; 3, iron scale groove; 4, gas storage tank; 5, dissolved air device; 6, oil collecting device; 7, lifting pump; 8, slag pool; 9, hoisting facility; 10, slag body storage space; 11, matched automatic instrument equipment; 12, function bin; 13, conical cylinder; 14, strip-shaped opening groove; 15', annular gap; 16', local outward protrusion of the outer cylinder in the radial direction; 17', baffle; 18', frustum structure formed by locally bending the bottom edge of the lower cylinder layer. DETAILED DESCRIPTION

[0031] The utility model is further described in detail below in combination with the drawings Figures 1-4 The utility model is further described in detail below in combination with the drawings

[0032] The utility model discloses a cyclone pool system for treating turbid circulating water of steel enterprises, comprising:

[0033] The cyclone equipment receives turbid circulating water and forms a cyclone separation into liquid phase and solid phase, and the cyclone equipment can adopt the cyclone equipment used in the prior art for treating turbid circulating water, which will not be repeated here.

[0034] The functional bin is provided with functional equipment and is used for removing oil mixture from the turbid circulating water and discharging the water phase after separation, wherein the functional equipment refers to equipment for treating the separated turbid circulating water with relatively large specific gravity of iron oxide skin, and the purpose is to remove floating oil, suspended particles with small density (collectively referred to as oil mixture) and discharge the treated water phase, such as an oil collector and a lifting pump in the prior art.

[0035] The slag removal equipment is used for removing the solid phase slag after the separation of the cyclone equipment, and can adopt mechanical equipment capable of removing the sediment with relatively large specific gravity in the cyclone equipment in the prior art, which will not be repeated here.

[0036] In the embodiment, the functional bin 12 is located in the cyclone equipment and above the liquid level of the treated liquid, forming a complete integrated feature, but the position should be higher than the highest liquid level formed in the cyclone process to ensure the normal operation of the functional equipment, which will not be repeated here.

[0037] In the embodiment, the functional equipment comprises:

[0038] The gas dissolving device 5 is used for forming gas dissolved water and mixing with the turbid circulating water to form turbid circulating water mixture for cyclone separation.

[0039] The oil collecting device 6 is used for separating the oil mixture in the turbid circulating water, and can be a disc oil skimmer, a steel belt oil skimmer and other machines for collecting floating oil and suspended particles, which will not be repeated here.

[0040] The lifting pump 7 is a vertical long shaft pump in the embodiment and is used for discharging the water phase after the separation of the turbid circulating water, wherein the water phase refers to water phase from which the iron oxide skin and other impurities with relatively large specific gravity are removed, and from which floating oil and suspended particles are removed, so that the inlet depth of the lifting pump should have a set height to avoid sucking floating oil and suspended particles, which will not be repeated here.

[0041] In the embodiment, the water phase of the dissolved air water is derived from the water phase separated from the cyclone device by the lift pump 7, realizing the secondary use of wastewater and saving water; after the dissolved air water is mixed with the turbid ring water of the iron skin ditch 3, the cyclone makes the suspended particles and the floating oil float on the top, facilitating the oil collection device 6 to collect, and improving the treatment efficiency; in the embodiment, the container device can use the general dissolved air flotation, and details are not described herein;

[0042] Of course, the functional bin 12 is also provided with automatic instrument equipment 11 including a liquid level meter and an oil analyzer, which are matched with the functional device, to facilitate online monitoring of the water level and water quality.

[0043] In the embodiment, the gas source of the dissolved air device 5 is provided by the gas storage tank 4 located in the functional bin, and the gas storage tank 4 generally adopts a steel pressure container to provide pressure gas for the container device to form dissolved air.

[0044] The slag removal device is a hoisting device 9, as shown in the figure, which includes a gantry and a crane provided on the gantry. The crane is installed with different tools to realize different functions, i.e., to grab slag and remove the waste slag on the bottom, and to replace the hoisting component for lifting the device under repair during maintenance. Details are not described herein.

[0045] In the embodiment, the cyclone device is an inner rotating cyclone device, which includes an outer cylinder 1 and an inner cylinder 2. The turbid ring water mixture is introduced into the inner cylinder tangentially along the iron skin ditch 3 and forms a cyclone. As shown in the figure, the outer cylinder 1 is sleeved on the inner cylinder 2 and forms a set distance, leaving enough liquid storage space. Details are not described herein.

[0046] The functional bin 12 is located in the space between the inner cylinder 2 and the outer cylinder 1. The bottom of the inner cylinder is an open structure and is in communication with the bottom of the outer cylinder. The lower opening refers to the lower part of the turbid ring water inlet part and is set at a distance to ensure that the iron oxide skin and other heavy sediments do not enter the space between the inner cylinder and the outer cylinder. The bottom of the outer cylinder forms a slag storage space 10, i.e., the bottom of the inner cylinder is an open structure and does not form a closed structure. Therefore, the sediment generated by the cyclone directly enters the slag storage space 10 at the bottom of the outer cylinder. Details are not described herein. The liquid phase of the turbid ring water mixture separated by the cyclone enters the space between the inner cylinder 2 and the outer cylinder 1. The functional bin is located in the space between the inner cylinder 2 and the outer cylinder 1 and above the liquid level of the liquid phase. As shown in the figure, the outer cylinder 1 and the inner cylinder 2 are fixed with a functional bin bottom 12. The functional device is installed on the functional bin bottom 12, which is integrated as a whole and is convenient for maintenance and maintenance.

[0047] The inner cylinder lower part is a conical cylinder 13, and the conical cylinder 13 is provided with a plurality of strip-shaped opening grooves 14 in parallel in the circumferential direction for connecting the inner cylinder and the outer cylinder, as shown, the bottom of the outer cylinder is an inverted conical shape and forms the slag storage space 10, the conical cylinder 13 of the inner cylinder is supported on the inverted conical bottom of the outer cylinder 1, forming a stable support structure; the bottom of the outer cylinder 1 is an inverted conical structure and forms the slag storage space 10; as shown, the strip-shaped opening grooves 14 on the conical cylinder 13 can also be regarded as a plurality of supports arranged in a conical structure, and the strip-shaped opening grooves 14 can be regarded as the spacing between adjacent supports, which will not be described here; the communication between the conical cylinder 13 and the outer cylinder 1 is formed, which ensures that the slag with a large specific gravity such as iron oxide scale will not enter between the inner cylinder 2 and the outer cylinder 1, and the liquid phase is introduced by using the principle of the communicating vessel, for subsequent processing.

[0048] The utility model discloses still can adopt following technical scheme, in this scheme, the cyclone equipment is the outer rotation type cyclone equipment, including outer cylinder 1' and inner cylinder 2', the turbid ring water mixed solution is introduced to the outer cylinder 1' along the scale ditch 3 and forms the cyclone tangentially, as shown, the outer cylinder 1' is sleeved on the inner cylinder 2' and forms the set spacing, and the liquid storage space is sufficient, which will not be described here.

[0049] The inner cylinder 2' includes upper inner cylinder 2'01 and lower inner cylinder 2'02, as shown, the upper inner cylinder 2'01 is in the relatively upper position, and its height is determined according to the overall design specification of the cyclone pool, for guiding and preliminary distribution of cyclone, the lower inner cylinder 2'02 is in the lower part of the cyclone pool in position, and is in resonance with the upper inner cylinder 2'01, for restraining the cyclone path, so that the cyclone process is stable and orderly, which will not be described here; the bottom of the outer cylinder forms the slag storage space 10, that is, the bottom of the inner cylinder is an open structure and does not form a closed structure, therefore, the sediment generated by the cyclone directly enters the slag storage space 10 at the bottom of the outer cylinder, which will not be described here; the liquid phase after the turbid ring water mixed solution is separated by cyclone enters the inner cylinder 2', the lower part between the upper inner cylinder 2'01 and the outer cylinder 1' forms a closed functional warehouse platform, the functional warehouse 12 is located above the functional warehouse platform, as shown, the functional warehouse bottom is fixed between the outer cylinder 1' and the upper inner cylinder 2'01, the functional equipment is installed on the functional warehouse bottom, and the overall integration is good, which is convenient for maintenance and maintenance.

[0050] The lower inner cylinder 2'02 includes an upper cylinder layer 2'021 and a lower cylinder layer 2'022 with a larger diameter than the upper cylinder layer, as shown in the figure, the upper cylinder layer 2'021 is at the upper part of the entire lower inner cylinder 2'02, and has a smaller diameter, which provides a relatively stable transition and preliminary precipitation for the liquid phase of the turbid circulating water mixture after being separated by cyclone, and the lower cylinder layer 2'022 has a larger diameter, which will not be described here; the upper cylinder layer 2'021 and the lower cylinder layer 2'022 partially overlap in the axial direction and form an annular gap 15' therebetween, as shown in the figure, the annular gap 15' has a set width, and the liquid phase of the turbid circulating water mixture after being separated by cyclone can enter the inner cylinder 15' from the annular gap 15'; and the lower cylinder layer 2'022 has a set distance from the outer cylinder 1', and the lower part of the lower cylinder layer 2'022 has a set distance from the bottom of the outer cylinder 1', as shown in the figure, the slag with a larger specific gravity such as iron oxide scale generated by cyclone precipitates to the bottom of the outer cylinder 1'.

[0051] In this embodiment, the outer cylinder 1' has a local outward protrusion 16' in the radial direction, and a baffle 17' is arranged between the inner part of the outward protrusion 16' and the outer cylinder 1' to form a lifting pump working space, and the baffle 17' is provided with an opening at a set height for guiding the liquid phase to the lifting pump working space, as shown in the figure, the opening is at a set height to ensure that suspended particles and floating oil do not enter the lifting pump working space, which will not be described here.

[0052] In this embodiment, the bottom edge of the lower cylinder layer is locally bent to form a frustum structure 18' corresponding to the inverted frustum-shaped cylinder bottom, as shown in the figure, the bottom of the outer cylinder is an inverted cone and forms the slag storage space 10, and the frustum structure 18' formed by the local bending of the bottom edge of the lower cylinder layer facilitates the precipitation of the slag with a larger specific gravity such as iron oxide scale to the slag storage space 10, which will not be described here; the bottom of the outer cylinder 1' is an inverted frustum-shaped cylinder bottom and forms the slag storage space 10, as shown in the figure, the frustum structure 18' corresponding to the inverted frustum-shaped cylinder bottom formed by the local bending of the bottom edge of the lower cylinder layer is in communication with the outer cylinder 1', which ensures that the slag with a larger specific gravity such as iron oxide scale does not enter the inner cylinder 2' and the outer cylinder 1', and the liquid phase enters by the principle of communicating vessels for subsequent treatment.

[0053] In this embodiment, the lifting pump 7 is distributed according to a set density, the oil collecting device 6 is a disc oil skimmer or a steel belt oil skimmer, and the dissolved air device 5 is a dissolved air flotation.

[0054] Finally, it is explained that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the present application. The technical solutions of the present application should be covered in the scope of the claims of the present application.

Claims

1. A cyclone basin system for treating turbid water in a steel works, characterized by: The utility model relates to a turbid circulating water treatment device, comprising: a cyclone device receiving turbid circulating water and forming cyclone separation into liquid phase and solid phase; a functional bin provided with functional devices for removing oil mixture from turbid circulating water and discharging water phase after separation; a residue removal device for removing solid phase residue after cyclone separation of the cyclone device; the functional devices include: a lift pump for discharging water phase after separation of turbid circulating water; an oil collection device for separating oil mixture from turbid circulating water; a dissolved air device for forming dissolved air water and mixing with turbid circulating water to form turbid circulating water mixture for cyclone separation.

2. The cyclone tank system for treating turbid circulating water in a steel plant according to claim 1, characterized in that: The functional bin is located in the cyclone device and above the liquid level of the liquid to be treated.

3. The cyclone basin system for treating turbid water in a steel plant according to claim 1, wherein: The air source of the dissolved air device is provided by a gas storage tank located in the functional bin; the residue removal device is a lifting device.

4. The rotating flow tank system for treating turbid circulating water in a steel plant according to claim 1, characterized in that: The cyclone device is an inner-rotation cyclone device, comprising an inner cylinder and an outer cylinder, and the turbid circulating water mixture is introduced into the inner cylinder along the tangential direction of the iron skin ditch and forms a cyclone; The functional bin is located in the space between the inner cylinder and the outer cylinder, the bottom of the inner cylinder is an open structure and communicates with the bottom of the outer cylinder, the bottom of the outer cylinder forms a residue storage space, the liquid phase after cyclone separation of the turbid circulating water mixture enters the space between the inner cylinder and the outer cylinder, and the functional bin is located in the space between the inner cylinder and the outer cylinder and above the liquid level of the liquid phase.

5. The rotating flow tank system for treating turbid circulating water in a steel plant according to claim 4, characterized in that: The lower part of the inner cylinder is a conical cylinder, and a plurality of strip-shaped open grooves for communicating the inner cylinder and the outer cylinder are arranged in the circumferential direction of the conical cylinder; the bottom of the outer cylinder is a reverse conical frustum structure and forms the residue storage space.

6. The rotating flow tank system for treating turbid circulating water in a steel plant according to claim 1, characterized in that: The cyclone device is an outer-rotation cyclone device, comprising an inner cylinder and an outer cylinder, and the turbid circulating water mixture is introduced into the outer cylinder along the tangential direction of the iron skin ditch and forms a cyclone; The inner cylinder comprises an upper inner cylinder and a lower inner cylinder, the bottom of the outer cylinder forms a residue storage space, the liquid phase after cyclone separation of the turbid circulating water mixture enters the inner cylinder, the lower part of the upper inner cylinder and the outer cylinder form a closed functional bin platform, and the functional bin is located above the functional bin platform. The lower inner cylinder comprises an upper cylinder layer and a lower cylinder layer with a larger diameter than the upper cylinder layer, the upper cylinder layer and the lower cylinder layer partially overlap in the axial direction and form an annular gap therebetween, and the lower cylinder layer has a set distance from the bottom of the outer cylinder.

7. The rotating flow tank system for treating turbid circulating water in a steel plant according to claim 6, characterized in that: The outer cylinder has a local outward protruding part in the radial direction, a baffle is arranged between the outward protruding part and the inner part of the outer cylinder body to form a lift pump working space, and the baffle is provided with openings at a set height for guiding the liquid phase to the lift pump working space.

8. The rotating flow tank system for treating turbid circulating water in a steel plant according to claim 7, characterized in that: The bottom of the outer cylinder is a reverse conical frustum structure and forms the residue storage space, and the bottom edge of the lower cylinder layer is locally bent to form a conical frustum structure corresponding to the reverse conical frustum structure.

9. A rotating flow tank system for treating turbid circulating water in a steel works according to claim 5 or 6, characterized in that: The lift pump is distributed according to a set density, the oil collection device is a disc oil removal machine or a steel belt oil removal machine, and the dissolved air device is a dissolved air flotation device.

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