CN215975423U - Oily wastewater treatment system - Google Patents
Oily wastewater treatment system Download PDFInfo
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- CN215975423U CN215975423U CN202122105446.9U CN202122105446U CN215975423U CN 215975423 U CN215975423 U CN 215975423U CN 202122105446 U CN202122105446 U CN 202122105446U CN 215975423 U CN215975423 U CN 215975423U
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Abstract
The utility model discloses an oily wastewater treatment system, which comprises at least one group of sand-water-oil separation zones and an anaerobic reaction zone, wherein each group of sand-water-oil separation zones comprises a sand-water separation zone and an oil-water separation zone, and each group of sand-water-oil separation zones and the anaerobic reaction zone are positioned in the same tank body unit; each group of sand-water-oil separation zones and the anaerobic reaction zone are separated by a first isolation frame; the sand-water separation zone and the oil-water separation zone in the same group are separated by a second isolation frame and a first isolation frame, and the upper parts of the sand-water separation zone and the oil-water separation zone in the same group are communicated; the bottom of each oil-water separation zone is communicated with the bottom of the anaerobic reaction zone; a plurality of inclined plates are arranged in each oil-water separation zone; the middle upper part of the anaerobic reaction zone is provided with a multilayer herringbone plate structure; waterproof partition plates are paved on the first isolation frames and the second isolation frames, and the thickness of each partition plate is larger than or equal to 1.5 mm. The utility model aims to divide different functional areas in a tank body unit so as to realize multi-phase separation treatment of introduced oily wastewater.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to an oily wastewater treatment system.
Background
At present, with the continuous expansion of urban scale and the increase of population, the pollution of water environment becomes a big problem, and industrial wastewater is a key and difficult point in the current sewage treatment work, especially the wastewater in the oil-containing food industry, although the toxicity is not large, the pollution discharge amount is large, the pollution discharge range is wide and the harm is huge because the wastewater relates to the clothes and food residence of people; the oil in the oily wastewater seriously affects the activity of water treatment microorganisms, and suspended matters such as mud and sand in the wastewater can also cause siltation in the anaerobic tank and affect the use function of the anaerobic tank.
The treatment technology adopted at present is to divide sand setting, oil separation and anaerobic treatment into a plurality of units, and an intermediate water tank and a power lifting device are required to be arranged among the units due to different heights of the units. The prior process wastes both plane land occupation and ton water treatment energy consumption. In particular, in the prior art CN 112007421 a, an oil-gas-water-sand four-phase separator, inorganic sand and associated gas in water are separated out by the action of rotational flow and gravity, and mineral oil is separated out by an inclined plate. And the prior art CN 106277305A is an anaerobic four-phase separator, the essence of which is the traditional anaerobic reaction annular three-phase separator, although the separation of floating sludge is increased, the floating sludge belongs to anaerobic lost gas-containing biological sludge, and the technology can not realize the function of four-phase separation in a strict sense.
Disclosure of Invention
The utility model mainly aims to provide an oily wastewater treatment system, and aims to solve the technical problems that the existing oily wastewater is difficult to separate and cannot be treated completely.
In order to achieve the purpose, the utility model provides an oily wastewater treatment system which comprises at least one group of sand-water-oil separation zones and an anaerobic reaction zone, wherein each group of sand-water-oil separation zones comprises a sand-water separation zone and an oil-water separation zone, and each group of sand-water-oil separation zones and the anaerobic reaction zone are positioned in the same tank body unit;
each group of sand-water-oil separation zones are separated from the anaerobic reaction zone by a first isolation frame;
the sand-water separation zone and the oil-water separation zone in the same group are separated by a second isolation frame and a first isolation frame, and the upper parts of the sand-water separation zone and the oil-water separation zone in the same group are communicated;
the bottom of each oil-water separation zone is communicated with the bottom of the anaerobic reaction zone;
a plurality of inclined plates are arranged in each oil-water separation zone, and each inclined plate is used for realizing oil-water separation in the oil-water separation zone;
the middle upper part of the anaerobic reaction zone is provided with a plurality of layers of herringbone plate structures, and each herringbone plate structure is used for separating biological sludge and methane generated in the anaerobic reaction zone;
waterproof partition plates are paved on the first isolation frames and the second isolation frames, and the thickness of each partition plate is larger than or equal to 1.5 mm.
Optionally, a stirring structure is arranged in each sand-water separation zone, and the stirring structure is placed in the middle of each sand-water separation zone.
Optionally, the inclined plates are parallel to each other and form an included angle of 30-60 degrees with the horizontal plane, and the inclined plates are arranged in parallel with the upper portions of the corresponding second isolation frames.
Optionally, each first isolation frame is composed of a first isolation frame unit and a first isolation frame auxiliary unit which form a preset angle, and an included angle between the first isolation frame unit close to the lower part of each group of sand-water-oil separation areas and the horizontal direction is 45-60 degrees.
Optionally, the highest level of the first isolation frame auxiliary unit close to each oil-water separation zone is higher than the liquid level in the tank body unit.
Optionally, the bottom of each oil-water separation zone is communicated with the bottom of the anaerobic reaction zone through a plurality of water distribution pipes, and the bottom of each oil-water separation zone is provided with a plurality of through holes which are matched with the corresponding water distribution pipes.
Optionally, an oily wastewater inlet is arranged in the middle of each sand-water separation zone, a silt outlet is arranged at the bottom of each sand-water separation zone, a biological silt outlet after anaerobic reaction is arranged at the bottom of the anaerobic reaction zone, a floating oil outlet is arranged at the upper part of each oil-water separation zone, and a plurality of overflow troughs are arranged at the upper part of the anaerobic reaction zone.
Optionally, each herringbone plate structure is communicated with a biogas collecting pipe, and the biogas collecting pipe is connected with a biogas processing device.
Optionally, each set of sand-water-oil separation zones is connected with the vertical tank wall of the tank body unit in a symmetrical or adjacent mode.
Optionally, each herringbone plate structure covers the middle upper portion of the anaerobic reaction zone and is simultaneously in contact with or spaced apart from each first isolation frame and the vertical tank wall of the tank unit by a preset distance.
The utility model provides an oily wastewater treatment system, which comprises at least one group of sand-water-oil separation zones and an anaerobic reaction zone, wherein each group of sand-water-oil separation zones comprises a sand-water separation zone and an oil-water separation zone, and each group of sand-water-oil separation zones and the anaerobic reaction zone are positioned in the same tank body unit; each group of sand-water-oil separation zones are separated from the anaerobic reaction zone by a first isolation frame; the sand-water separation zone and the oil-water separation zone in the same group are separated by a second isolation frame and a first isolation frame, and the upper parts of the sand-water separation zone and the oil-water separation zone in the same group are communicated; the bottom of each oil-water separation zone is communicated with the bottom of the anaerobic reaction zone; a plurality of inclined plates are arranged in each oil-water separation zone, and each inclined plate is used for realizing oil-water separation in the oil-water separation zone; the middle upper part of the anaerobic reaction zone is provided with a plurality of layers of herringbone plate structures, and each herringbone plate structure is used for separating biological sludge and methane generated in the anaerobic reaction zone; waterproof partition plates are paved on the first isolation frame and the second isolation frame. This oily wastewater treatment system is through carrying out the partition of different functional areas in with the cell body unit, and then realizes carrying out heterogeneous thorough separation with the oily waste water that lets in, is about to wherein silt particle, grease, biological marsh gas, anaerobism mud, clear water after the reaction can realize separating in a reactor, need not establish middle pond and secondary promotion, has improved the treatment effeciency to oily waste water to and reduced the cost expenditure who builds this system.
Drawings
FIG. 1 is a schematic structural view showing the elevational structure of a first embodiment of an oily wastewater treatment system of the present invention;
FIG. 2 is a schematic structural diagram of an elevational structure of a second embodiment of an oily wastewater treatment system according to the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1, the structural schematic diagram of the vertical structure of the first embodiment of the oily wastewater treatment system specifically includes at least one set of sand-water-oil separation zone and an anaerobic reaction zone 10, each set of sand-water-oil separation zone includes a sand-water separation zone 20 and an oil-water separation zone 30, each set of sand-water-oil separation zone and the anaerobic reaction zone 10 are located in the same tank unit, and each set of sand-water-oil separation zone and the anaerobic reaction zone 10 are separated by a first isolation frame 90; the sand-water separation zone 20 and the oil-water separation zone 30 in the same group are separated by a second isolation frame 80 and a first isolation frame 90, and the upper parts of the sand-water separation zone 20 and the oil-water separation zone 30 in the same group are communicated; the bottom of each oil-water separation zone 30 is communicated with the bottom of the anaerobic reaction zone 10; a plurality of inclined plates 31 are arranged in each oil-water separation zone 30, and each inclined plate 31 is used for realizing oil-water separation in the oil-water separation zone 30; the middle upper part of the anaerobic reaction zone 10 is provided with a plurality of layers of herringbone plate structures 60, and each herringbone plate structure 60 is used for separating biological sludge and methane generated by the anaerobic reaction zone 10; waterproof partition plates are laid on the first isolation frame 90 and the second isolation frame 80.
Specifically, each sand-water separation zone 20 mainly comprises bottom silt and upper water zone, the oil-water separation zone 30 comprises upper oil floating zone 40 and water zone below the oil floating zone 40, and the water zones of the oil-water separation zone 30 and the sand-water separation zone 20 are communicated. The anaerobic reaction zone 10 is mainly divided into three-phase separation zones, including a middle lower part which is an anaerobic reaction sludge zone, a middle upper part which is a double-layer or multi-layer herringbone plate structure 60, and an upper part which is a precipitation water outlet zone, meanwhile, each sand-water separation zone 20 and the oil-water separation zone 30 occupy part of the upper space of the anaerobic reaction zone 10, and then a part of the anaerobic reaction sludge zone is positioned below the sand-water separation zone 20 and the oil-water separation zone 30, thus fully utilizing the space at the lower part of each group of sand-water separation zones. The first isolation frame 90 includes a first isolation frame unit 91 and a first isolation frame auxiliary unit 92, and the first isolation frame unit 91 and the first isolation frame auxiliary unit 92 form a preset included angle, preferably, the included angle is 90-150 degrees; the second isolation frame 80 is connected to the middle of the first isolation frame unit 91 and is used for isolating the sand-water separation region 20 and the oil-water separation region 30 in the same group, and the sand-water separation region 20 and the upper portion of the oil-water separation region 30 in the same group are communicated, so that wastewater after sand-water separation in the sand-water separation region 20 enters the oil-water separation region 30 in time, and the highest level of the first isolation frame auxiliary unit 92 close to each oil-water separation region 30 is higher than the liquid level in the tank unit and is used for assisting in isolating each group of sand-water-oil separation regions from the anaerobic reaction region 10. The first isolation frame 90 and the second isolation frame 80 are made of steel frames or steel concrete frames, the waterproof partition plates are laid between the steel frames of the first isolation frame 90 and the second isolation frame 80 and made of high-density polyethylene (HDPE), polypropylene (PP), polyvinyl chloride (PVC) and other materials, the thickness of each waterproof partition plate is controlled to be larger than or equal to 1.5mm, the water pressure of the upper side and the water pressure of the lower side of each waterproof partition plate can be kept consistent, meanwhile, plates with corresponding strength and corrosion resistance can be used for replacement, and the traditional integral steel structure or integral steel concrete structure can be replaced by the combination of the isolation frames and the waterproof partition plates, so that the cost is effectively reduced. This oily wastewater treatment system is through carrying out the partition in the cell body unit different functional areas, and then realizes carrying out heterogeneous thorough separation with the oily waste water that lets in, is about to mud sand, grease, biological marsh gas, anaerobism mud wherein and clear water after the reaction five components promptly can realize the separation in a reactor, need not establish middle pond and secondary promotion, has improved the treatment effeciency to oily waste water to and reduced the cost expenditure who builds this system.
Further, a stirring structure 21 is arranged in each sand-water separation zone 20, and the stirring structure 21 is placed in the middle of each sand-water separation zone 20. In particular, under the action of gravity, separation of sand from water can be achieved; meanwhile, the stirring structure 21 is arranged in the sand-water separation zone 20, so that organic matters attached to the surface of the sand are easily eluted by the stirred water flow, and the sand separation effect is improved; under the condition that the space of the sand-water separation zones 20 is limited, the stirring structures 21 can be obliquely placed in the sand-water separation zones 20, so that a better sand-water separation effect can be realized; generally, the stirring structure 21 is arranged in the middle of the sand-water separation zone 20, so that the sand-water separation effect is further enhanced; and the middle part of the sand-water separation zone 20 close to the vertical tank wall of the tank body unit is provided with an oily wastewater inlet 24 for the initial oily wastewater to enter and be controlled by a corresponding first valve 25, and the bottom of the sand-water separation zone 20 is provided with a sand outlet 22, and correspondingly, the opening and the closing are also controlled by a corresponding second valve 23, so that the two-phase separation effects of water inlet in the middle part and sand discharge at the bottom in the sand-water separation zone 20 are realized.
Further, the inclined plates 31 are parallel to each other, and the inclined plates are disposed in parallel to the upper portions of the corresponding second spacers 80. Specifically, the inclined plate 31 is generally made of polyvinyl chloride (PVC) or glass fiber reinforced plastic (frp) or PP, and the principle of shallow layer precipitation is utilized to separate oil from water and to achieve high efficiency separation, so that the inclined plate 31 is controlled to form an included angle with the horizontal, the smaller the included angle is, the smaller the oil collecting area is, the more beneficial the oil layer is to discharge, but pore blockage between the inclined plate 31 may be caused, the included angle is preferably controlled to be 30-60 degrees, oil-water and high efficiency separation is achieved by the arrangement of the inclined plate, and in actual operation, the general control time is within 120 min. In addition, the distance between the inclined plates 31 is 50mm or more, the oil-water separation is realized by the inclined plates 31, the separated oil floats on the oil floating area 40 with a contracted area, furthermore, the upper part of each oil-water separation area 30 is provided with an oil floating outlet 33, and the oil in the oil floating area 40 is discharged after reaching a certain thickness, namely, whether the oil is discharged or not is controlled by the corresponding third valve 41.
Further, the included angle between the first isolation frame unit 91 close to the lower part of each group of sand-water-oil separation areas 20 and the horizontal direction is 45-60 degrees. Specifically, the first isolation frame unit 91 is generally set to have a certain inclination angle with the horizontal direction, that is, an included angle between the first isolation frame unit 91 and the horizontal direction is set, and the larger the included angle is, the better the sludge discharge effect is, but the larger the wasted tank body height is, so the included angle is controlled to be 45-60 degrees, and further when the sludge and sand at the bottom of the sand-water separation area 20 is deposited to a certain degree, the second valve 23 is opened to discharge the sludge and sand at the bottom of the sand-water separation area 20 from the sludge and sand outlet 22, in actual operation, the retention time of the oily wastewater in the sand-water separation area 20 is generally controlled within 30min, that is, after the stirring structure 21 continuously stirs for 30min, the sludge and sand at the bottom of the sand-water separation area 20 can be discharged. Moreover, based on the preset included angle between the first isolation frame unit 91 and the horizontal direction, the inclined first isolation frame unit 91 can play a good role in guiding the biogas generated by the anaerobic reaction zone 10, i.e., the generated biogas can float upwards from bottom to top along the inclined direction of the first isolation frame unit 91, and further the area and construction cost required by the anaerobic reaction zone 10 are effectively reduced.
Further, the bottom of each oil-water separation zone 30 is communicated with the bottom of the anaerobic reaction zone 10 through a plurality of water distribution pipes 70, the bottom of each oil-water separation zone 30 is provided with a plurality of through holes 32, each through hole 32 is matched with the corresponding water distribution pipe 70, and then one end of each water distribution pipe 70 is connected with the bottom of the oil-water separation zone 30, and the other end is connected with the anaerobic reaction sludge zone.
Further, the bottom of the anaerobic reaction zone 10 is provided with a biological mud outlet 11 after anaerobic reaction, and the discharge of the biological mud at the bottom of the anaerobic reaction zone 10 is controlled by opening a fourth valve 12.
Further, a plurality of overflow chutes 50 are arranged on the upper portion of the anaerobic reaction zone 10, specifically, the overflow chutes are arranged on the sedimentation water outlet region on the upper portion of the anaerobic reaction zone, and the bottoms of the overflow chutes 50 are provided with corresponding through holes and connected with corresponding connecting pipelines 51 for discharging water in the overflow chutes 50 out of the tank body unit.
Furthermore, each herringbone plate structure 60 is communicated with a biogas collecting pipe 61, and the biogas collecting pipe 61 is connected with a biogas liquid sealing device 62. Specifically, each herringbone plate structure 60 is composed of double-layer or multi-layer herringbone plate structure units, each herringbone plate structure 60 covers the middle upper portion of the anaerobic reaction region 10, and is in contact with or spaced from each first isolation frame 90 and the vertical tank wall of the tank body unit by a preset distance, the preset distance is larger than 0 and smaller than 200mm, so that the separation of biological sludge and biogas generated in the anaerobic reaction region 10 of the tank body unit is ensured, the generated biogas is collected to the communicated collection pipe 61, the biogas collection pipe 61 is connected to the biogas sealing device 62 for biogas treatment, the biogas sealing device 62 can achieve a good sealing effect in the tank body unit, the risk of backfire explosion of the tank body during biogas combustion is reduced, and further the potential safety hazard existing in the tank body unit is eliminated.
Further, as shown in fig. 2, on the basis of the embodiment shown in fig. 1, there is provided a schematic structural diagram of a vertical structure of a second embodiment of the oily wastewater treatment system of the present invention, which includes connecting each group of sand-water-oil separation zones with a vertical tank wall of the tank body unit in a symmetrical and/or adjacent manner, specifically, based on five phase separation of the oily wastewater achieved by combining the single group of sand-water-oil separation zones with the anaerobic reaction zone 10, that is, five different material phases of grease, sand, biogas during anaerobic reaction, anaerobic biological sludge and treated supernatant are achieved, setting 2 or more than 2 groups of sand-water-oil separation zones, and controlling the oily wastewater therein to alternately enter the sand-water separation zones 20, and sharing the anaerobic reaction zone 10, wherein the sand-water-oil separation zones may be arranged in an adjacent and/or symmetrical manner in the tank body unit, and the anaerobic reaction zone 10 is divided into batches, so that the stirring intensity of anaerobic inflow water can be increased, the sedimentation load of the anaerobic reaction zone 10 can be reduced, and the mixing, sedimentation and separation effects are improved.
In the above embodiments, the skilled person can adopt the existing technology for software control, and the present invention only relates to the structure and the mutual connection relationship of the oily wastewater treatment system.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The oily wastewater treatment system is characterized by comprising at least one group of sand-water-oil separation zone and an anaerobic reaction zone, wherein each group of sand-water-oil separation zone comprises a sand-water separation zone and an oil-water separation zone, and each group of sand-water-oil separation zone and the anaerobic reaction zone are positioned in the same tank body unit;
each group of sand-water-oil separation zones are separated from the anaerobic reaction zone by a first isolation frame;
the sand-water separation zone and the oil-water separation zone in the same group are separated by a second isolation frame and a first isolation frame, and the upper parts of the sand-water separation zone and the oil-water separation zone in the same group are communicated;
the bottom of each oil-water separation zone is communicated with the bottom of the anaerobic reaction zone;
a plurality of inclined plates are arranged in each oil-water separation zone, and each inclined plate is used for realizing oil-water separation in the oil-water separation zone;
the middle upper part of the anaerobic reaction zone is provided with a plurality of layers of herringbone plate structures, and each herringbone plate structure is used for separating biological sludge and methane generated in the anaerobic reaction zone;
waterproof partition plates are paved on the first isolation frames and the second isolation frames, and the thickness of each partition plate is larger than or equal to 1.5 mm.
2. The oily wastewater treatment system of claim 1 wherein an agitation structure is provided within each sand-water separation zone, said agitation structure being placed in the middle of each sand-water separation zone.
3. The oily wastewater treatment system according to claim 1, wherein each inclined plate is parallel to each other and forms an angle of 30 to 60 degrees with the horizontal, and each inclined plate is arranged in parallel with the upper part of the corresponding second separation frame.
4. The oily wastewater treatment system of claim 1, wherein each first isolation frame is composed of a first isolation frame unit and a first isolation frame auxiliary unit which form a preset included angle, and the included angle between the first isolation frame unit close to the lower part of each group of sand-water-oil separation areas and the horizontal direction is 45-60 degrees.
5. The oily wastewater treatment system as claimed in claim 4, wherein the highest level of the first barrier auxiliary unit adjacent to each oil-water separation zone is higher than the liquid level in the tank unit.
6. The oily wastewater treatment system of claim 4, wherein the bottom of each oil-water separation zone is communicated with the bottom of the anaerobic reaction zone through a plurality of water distribution pipes, and the bottom of each oil-water separation zone is provided with a plurality of through holes, and each through hole is matched with the corresponding water distribution pipe.
7. The oily wastewater treatment system as claimed in claim 1, wherein the middle part of each sand-water separation zone is provided with an oily wastewater inlet, the bottom of each sand-water separation zone is provided with a silt outlet, the bottom of the anaerobic reaction zone is provided with a biological silt outlet after anaerobic reaction, the upper part of each oil-water separation zone is provided with a floating oil outlet, and the upper part of the anaerobic reaction zone is provided with a plurality of overflow chutes.
8. The oily wastewater treatment system of claim 1, wherein each herringbone plate structure is communicated with a biogas collecting pipe, and the biogas collecting pipe is connected with a biogas treatment device.
9. An oil-containing wastewater treatment system according to any one of claims 1 to 8, characterized in that each set of sand-water-oil separation zones is connected with the vertical tank wall of the tank unit in a symmetrical and/or adjacent manner.
10. The oily wastewater treatment system according to claim 9, wherein each herringbone plate structure covers the middle upper part of the anaerobic reaction zone and is simultaneously in contact with or spaced a preset distance from each first isolation frame and the vertical tank wall of the tank unit.
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| CN202122105446.9U CN215975423U (en) | 2021-09-02 | 2021-09-02 | Oily wastewater treatment system |
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| CN202122105446.9U CN215975423U (en) | 2021-09-02 | 2021-09-02 | Oily wastewater treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113754186A (en) * | 2021-09-02 | 2021-12-07 | 北京华夏大禹科技有限公司 | Oily wastewater treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113754186A (en) * | 2021-09-02 | 2021-12-07 | 北京华夏大禹科技有限公司 | Oily wastewater treatment system |
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