CN214457302U - Oily sewage treatment equipment - Google Patents
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- CN214457302U CN214457302U CN202023114184.4U CN202023114184U CN214457302U CN 214457302 U CN214457302 U CN 214457302U CN 202023114184 U CN202023114184 U CN 202023114184U CN 214457302 U CN214457302 U CN 214457302U
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Abstract
The utility model provides oily sewage treatment equipment, which belongs to the field of environmental protection equipment and comprises a multi-stage air floatation coalescence degreasing device, a dosing device, a three-stage filtering device and a filtering backwashing device; the multi-stage air floatation coalescence deoiling device comprises a multi-stage air floatation coalescence deoiling integrated machine, a dissolved air pump and a dissolved air tank; the oily sewage is pressurized and lifted and then is connected into a total water inlet of the equipment, the total water inlet is divided into two paths, one path is connected with a water inlet of a dissolved air pump, and the other path is connected with a water inlet of a multi-stage air floatation coalescence oil removal all-in-one machine; the water outlet of the dissolved air pump is connected with the water inlet of the dissolved air tank, the outlet of the dissolved air tank is divided into three pipelines which are respectively connected with a first-stage air-flotation dissolved air water inlet, a second-stage air-flotation dissolved air water inlet and a third-stage oil-removing dissolved air water inlet of the multi-stage air-flotation coalescence oil-removing all-in-one machine. The equipment has high integration level, small volume and low overall investment; the process has the advantages of simplified and complete process lines, simple operation, good treatment effect of the oily sewage, high treatment efficiency and capability of reaching the treatment index of direct discharge.
Description
Technical Field
The utility model belongs to the environmental protection equipment field, concretely relates to oily sewage treatment device.
Background
Along with the increase of the development age of oil fields, the oily sewage produced from the underground by crude oil is increased day by day, the part of the water is treated by a sewage treatment system, and the purified oily sewage is used as a water injection source and is reinjected into an oil layer.
The discharged oily sewage often contains complex components such as oil, various organic chemical substances and the like, so that the sewage treatment process is complex, sewage treatment equipment is huge, and the sewage treatment cost is very high. At present, the traditional treatment method for sewage containing oil, organic chemical substances and the like comprises the following steps: the method adopts sedimentation, oil removal separation by inclined pipes or inclined plates, electrode air flotation or biochemistry, multistage filtration or membrane filtration.
The treatment method has the defects of huge facilities, wide occupied area, low treatment efficiency and high investment, and has complex process and great operation difficulty.
Therefore, the application provides an oily sewage treatment device.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects existing in the prior art, the utility model provides an oily sewage treatment device.
In order to achieve the above object, the present invention provides the following technical solutions:
an oily sewage treatment device comprises a multi-stage air flotation coalescence deoiling device, a dosing device, a three-stage filtering device and a filtering backwashing device;
the multistage air floatation coalescence deoiling device comprises a multistage air floatation coalescence deoiling integrated machine, a dissolved air pump and a dissolved air tank; the interior of the multi-stage air floatation coalescence deoiling all-in-one machine is sequentially divided into a first-stage air floatation separation area, a second-stage air floatation separation area and a third-stage coalescence deoiling area according to the oil inlet direction, and a water outlet of the third-stage coalescence deoiling area is communicated with an intermediate water tank;
the oily sewage is pressurized and lifted and then is connected into a total water inlet of the equipment, the total water inlet is divided into two paths, one path is connected with a water inlet of the dissolved air pump, and the other path is connected with a water inlet of the multistage air floatation coalescence oil removal all-in-one machine; the water outlet of the dissolved air pump is connected with the water inlet of the dissolved air tank, the outlet of the dissolved air tank is divided into three pipelines which are respectively connected with a primary air flotation dissolved air water inlet, a secondary air flotation dissolved air water inlet and a tertiary oil removal dissolved air water inlet of the multi-stage air flotation coalescence oil removal all-in-one machine;
the three-stage filtering device comprises a walnut shell filter, an AFM filter and a compression type modified fiber bundle filter which are sequentially connected in series; the water inlet of the walnut shell filter is connected with a filtration lift pump, and the filtration lift pump is communicated with the water outlet of the intermediate water tank; the water outlet of the compression type modified fiber bundle filter is a water producing port of the equipment, and the sewage outlet is a total sewage outlet of the equipment;
the dosing device comprises four dosing modules, dosing points corresponding to the four dosing modules are respectively a main water inlet pipeline, a multi-stage air floatation coalescence degreasing all-in-one machine water inlet pipeline, a primary air floatation water outlet pipeline and a secondary air floatation water inlet pipeline, and chemicals added at the four dosing points are respectively a flocculating agent, a coagulant aid, a flocculating agent and a coagulant aid;
and the filtering backwashing device is connected with the walnut shell filter and is used for backwashing the three-stage filtering device.
Preferably, the filtration backwash system comprises a backwash stirrer, a backwash air compressor and a backwash lift pump, the backwash stirrer is arranged at the top of the walnut shell filter, the backwash air compressor provides a backwash air source for the tertiary filter device, the backwash lift pump is arranged on the backwash water inlet pipeline, the backwash lift pump provides a backwash water source for the tertiary filter device, and electric valves are arranged on the air source pipeline and the water source pipeline of the filtration backwash system.
Preferably, an oleophilic coalesced oil removal material is arranged in the third coalesced oil removal area.
Preferably, every add the medicine module and all include the medicine bucket and set up add pharmacy mixer, tongue tube level gauge, the glass rotameter in the medicine jar, add the medicine bucket top be provided with the medicine measuring pump, be provided with the check valve on the discharge tube of medicine bucket, the water inlet of every medicine bucket is through adding the filterable mouth of a river of producing of medicine water piping connection.
Preferably, the AFM filter is internally provided with an AFM special filter material, the compression type fiber bundle filter is provided with a hydraulic pump station and a hydraulic cylinder, the hydraulic pump station is connected with the hydraulic cylinder through a hydraulic oil pipe, and the fiber bundle compression and stretching states are switched by the operation of the hydraulic pump station.
Preferably, a first-stage air flotation regulating valve is arranged on a pipeline of the first-stage air flotation separation chamber, and a second-stage air flotation regulating valve is arranged on a pipeline of the second-stage air flotation separation chamber.
Preferably, the device also comprises a control cabinet, wherein the control cabinet generates control instructions for the multistage air-flotation coalescence oil removal device, the dosing device, the three-stage filtering device and the filtering backwashing device, and monitors the working states of the multistage air-flotation coalescence oil removal device, the dosing device, the three-stage filtering device and the filtering backwashing device.
The utility model provides an oily sewage treatment device has following beneficial effect:
(1) the equipment has high design integration degree, compact equipment connection, small equipment volume, convenient movement and hoisting and low overall investment, and is mounted by skid;
(2) the process has the advantages of simplified and complete process lines, simple operation, good treatment effect of the oily sewage, high treatment efficiency and capability of reaching the treatment index of direct discharge.
Drawings
In order to more clearly illustrate the embodiments of the present invention and the design thereof, the drawings required for the embodiments will be briefly described below. The drawings in the following description are only some embodiments of the invention, and it will be clear to a person skilled in the art that other drawings can be obtained on the basis of these drawings without inventive effort.
FIG. 1 is a schematic view of the vertical structure of an oily sewage treatment apparatus according to embodiment 1 of the present invention;
FIG. 2 is a schematic plan view of an oily sewage treatment apparatus according to embodiment 1 of the present invention;
FIG. 3 is a flow chart showing a process for treating oily sewage by using the oily sewage treatment apparatus of embodiment 1 of the present invention.
Description of reference numerals:
the device comprises a multi-stage air flotation coalescence degreasing all-in-one machine 1, a dissolved air pump 2, a dissolved air tank 3, a walnut shell filter 4, an AFM filter 5, a compression type modified fiber bundle filter 6, a filtration lift pump 7, a water production port 8, a total sewage discharge port 9, a total water inlet 10, a water inlet pipeline 11, a primary air flotation water outlet pipeline 12, a secondary air flotation water inlet pipeline 13, a backwashing stirrer 14, a backwashing air compressor 15, a backwashing lift pump 16, a backwashing water inlet pipeline 17, a dosing barrel 18, a pharmaceutical stirrer 19, a reed pipe liquid level meter 20, a glass rotor flowmeter 21, a dosing metering pump 22, a check valve 23, a hydraulic pump station 24, a hydraulic cylinder 25, a primary air flotation regulating valve 26, a secondary air flotation regulating valve 27, a control cabinet 28, a hydraulic oil pipe 29, a slag discharge regulating valve 30, a static pressure meter 31, an air water cleaning pipeline water inlet 32, a dosing water inlet pipe 33 and an electric valve 34.
Detailed Description
In order to make the technical solution of the present invention better understood and practical for those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the technical solutions of the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. In the description of the present invention, unless otherwise specified, "a plurality" means two or more, and will not be described in detail herein.
Example 1
The utility model provides an oily sewage treatment device, which is particularly shown in a figure 1 and a figure 2 and comprises a multi-stage air flotation coalescence deoiling device, a dosing device, a three-stage filtering device and a filtering backwashing device;
the multi-stage air flotation coalescence deoiling device comprises a multi-stage air flotation coalescence deoiling integrated machine 1, a dissolved air pump 2 and a dissolved air tank 3; the interior of the multi-stage air flotation coalescence deoiling all-in-one machine 1 is sequentially divided into a first-stage air flotation separation area, a second-stage air flotation separation area and a third-stage coalescence deoiling area according to the oil inlet direction, and a water outlet of the third-stage coalescence deoiling area is communicated with an intermediate water tank; the multistage air flotation coalescence deoiling all-in-one 1 that this embodiment provided is closed structure, does not have the oil gas to volatilize, and environmental friendly. The oil discharged by the equipment is discharged outside by pressure and buoyancy, a mechanical slag scraping mechanism is not arranged, the maintenance amount is small, and the operation is stable.
The top of the multi-stage air flotation coalescence deoiling all-in-one machine 1 is provided with a deslagging port, a deslagging pipeline is arranged in the deslagging port, a deslagging regulating valve 30 is arranged on the deslagging pipeline, and a static pressure type liquid level meter 31 is further arranged inside the multi-stage air flotation coalescence deoiling all-in-one machine 1. The oily sewage is pressurized and lifted and then is connected into a main water inlet 10 of the equipment, the main water inlet 10 is divided into two paths, one path is connected with a water inlet of a dissolved air pump 2, and the other path is connected with a water inlet of a multi-stage air floatation coalescence oil removal all-in-one machine 1; the delivery port of dissolved air pump 2 is connected with the water inlet of dissolving gas jar 3, become the pressurization after the oily sewage that gets into dissolved air pump 2 mixes with the air and dissolves the air water, pipeline assembles and carries out the steady voltage in dissolving gas jar 3 and adjusts behind the dissolved air pump 2 pump, the export of dissolving gas jar 3 divide into three routes pipeline, the one-level air supporting that connects multistage air supporting coalescence deoiling all-in-one 1 respectively dissolves the air water import (corresponds one-level air supporting disengagement zone), the air water import is dissolved in second grade air supporting (corresponds second grade air supporting disengagement zone) and the air water import is dissolved in tertiary deoiling (corresponds tertiary coalescence deoiling zone), it dissolves the air water to provide the pressurization for multistage air supporting coalescence deoiling all-in-one 1. The sewage directly passes through the pressurizing and air dissolving process of the multiphase flow air dissolving pump, and a valve decompression release technology is adopted. The pressure of dissolved gas is 0.1-0.15MPa higher than that of common dissolver equipment, the dissolved gas amount is more, the release valve is simple, and no pollution or blockage occurs.
The three-stage filtering device comprises a walnut shell filter 4, an AFM filter 5 and a compression type modified fiber bundle filter 6 which are sequentially connected in series; the water inlet of the walnut shell filter 4 is connected with a filtration lift pump 7, and the filtration lift pump 7 is communicated with the water outlet of the middle water tank; the water outlet of the compression type modified fiber bundle filter 6 is a water production port 8 of the equipment, and the sewage outlet is a total sewage outlet 9 of the equipment;
in the embodiment, an energy dissipation device is arranged, the oily sewage entering the multi-stage air flotation coalescence oil removal all-in-one machine 1 from the water inlet stage air flotation oil removal all-in-one machine 1 is decompressed by the energy dissipation device and then sequentially passes through a first-stage air flotation separation zone, a second-stage air flotation separation zone and a third-stage coalescence oil removal zone for step-by-step purification, and the purified water is converged into an intermediate water tank in the all-in-one machine;
the dosing device comprises four dosing modules, the dosing points corresponding to the four dosing modules are a total water inlet pipeline, a multi-stage air floatation coalescence degreasing all-in-one water inlet pipeline 11, a primary air floatation water outlet pipeline 12 and a secondary air floatation water inlet pipeline 13 respectively, the four dosing points correspond to a first dosing point, a second dosing point, a third dosing point and a fourth dosing point of a medicament on the graphs 1 and 2 respectively, and the medicaments added by the four dosing points are a flocculating agent, a coagulant aid, a flocculating agent and a coagulant aid respectively; the impurities and colloids dissolved in water after the liquid medicine is mixed are separated out after demulsification, agglomerated, combined with small bubbles of 20-30 mu m released under reduced pressure, floated on the water surface, and concentrated and discharged through a manhole. The reaction time of the liquid medicine is short, and a part of small flocs do not grow up and are not completely separated, so that after the first-stage air flotation separation, the liquid medicine flows to the second-stage air flotation along with the water and slowly grows up; the two-stage air flotation and the same-stage air flotation have the same purification process. In the embodiment, an oleophilic coalescence deoiling material is arranged in the second-stage air floatation separation chamber, and oil drops coalesce and grow on the surface of the material when flowing through the coalescence material until the buoyancy of the oil drops is larger than the water flow descending resistance. In the embodiment, the air-water cleaning pipeline is arranged in the multistage air-flotation coalescence-degreasing all-in-one machine 1, and the water inlet 32 of the air-water cleaning pipeline is arranged on the outer wall of the multistage air-flotation coalescence-degreasing all-in-one machine 1, so that flocs of coalescent materials can be removed periodically.
The filtering backwashing device is connected with the walnut shell filter 4 to reversely clean the three-stage filtering device. Specifically, in this embodiment, filter backwash system includes backwash mixer 14, backwash air compressor machine 15 and backwash elevator pump 16, and backwash mixer 14 sets up at walnut shell filter 4 tops, and backwash air compressor machine 15 provides the backwash air supply for tertiary filter equipment, and backwash elevator pump 16 sets up on backwash water inlet pipe 17, and backwash elevator pump 16 provides the backwash water source for tertiary filter equipment, all set up motorised valve 34 on filter backwash system's air supply pipeline and the water source pipeline.
Further, in this embodiment, each dosing module includes a dosing barrel 18, a pharmaceutical mixer 19, a reed pipe level gauge 20 and a glass rotameter 21, the pharmaceutical mixer is disposed in the dosing tank, a dosing metering pump 22 is disposed on the top of the dosing barrel 18, and a check valve 23 is disposed on the discharge pipe of the dosing barrel 18 to prevent sewage from returning to the equipment. The dosing metering pump 22 in this embodiment is a mechanical diaphragm metering pump, the flow rate can be adjusted at will within a range of 0-100% during operation, and the operation is convenient. The water inlet of each dosing barrel 18 is connected with the filtered water producing port 8 through a dosing water inlet pipe 33 and is used for supplying water for pharmacy of the dosing device, and the treated water is clear water and is recycled for pharmacy.
Meanwhile, in the embodiment, the AFM filter 5 is internally provided with the AFM special filter material, the compression type fiber bundle filter is provided with the hydraulic pump station 24 and the hydraulic cylinder 25, the hydraulic pump station 24 is connected with the hydraulic cylinder 25 through the hydraulic oil pipe 29, and the fiber bundle compression state and the fiber bundle tension state are switched by the operation of the hydraulic pump station 24.
Further, in this embodiment, a first-stage air flotation regulating valve 26 is disposed on a pipeline of the first-stage air flotation separating chamber, and a second-stage air flotation regulating valve 27 is disposed on a pipeline of the second-stage air flotation separating chamber, so as to regulate the amount of dissolved air water.
Further, in this embodiment, the air-flotation oil removing device further includes a control cabinet 28, and the control cabinet 28 generates control instructions to the multi-stage air-flotation coalescence oil removing device, the dosing device, the three-stage filtering device and the filtering backwashing device, and monitors the working states of the multi-stage air-flotation coalescence oil removing device, the dosing device, the three-stage filtering device and the filtering backwashing device.
The walnut shell filter in the embodiment takes walnut shells as a filter medium, and the specially treated walnut shells have high removal rate due to large surface area and strong adsorption capacity. Due to the hydrophilic and non-oleophilic property, the walnut shells are stirred to rub with each other during backwashing, so that the desorption capacity is strong, the regeneration capacity is strong, the chemical stability is good, and the long-term stability of the performance of the filter is facilitated. The equipment adopts deep bed filtration, and the sewage interception capability can be greatly improved. The anti-blocking labyrinth is adopted to replace a common water distribution sieve tube, so that the blocking phenomenon of the filter along with the increase of the operation time or the change of water quality in the operation process is avoided. When the device is used, the numerical value of a pressure gauge is observed, and when the water inlet and outlet pressure difference is greater than 0.018MPa or the flow rate is obviously reduced, the water inlet and outlet valves are closed to prepare backwashing; when the differential pressure after back washing is still larger than 0.018MPa, the filler is considered to be replaced; the pressure shock should be prevented and the reverse pressurization should be prohibited during operation.
The AFM active filter material of the AFM filter replaces the double filter material (quartz sand + anthracite) in this example, which is made of a specific glass, is treated to achieve an optimum particle size and shape, and then is chemically activated to increase the surface area to over 300 times that of the crushed glass or sand. Its large surface area is given a permanent negative charge (zeta potential) and is able to electrostatically attract organic matter and small particles. It also contains permanent metal oxide catalyst to generate high redox potential, so that AFM filter material has self-disinfecting property. The AFM filtration effect exceeds that of quartz and glass sand by 30 percent on the filtration of organic matters. Has biological resistance and self-disinfection property, and the characteristic ensures that a biological film can not be generated on the filter bed, so that the filter system is healthier, more ecological and more economical. When the device is used, the numerical value of a pressure gauge is observed, and when the water inlet and outlet pressure difference is greater than 0.018MPa or the flow rate is obviously reduced, the water inlet and outlet valves are closed to prepare backwashing; when the differential pressure after back washing is still larger than 0.018MPa, the filler is considered to be replaced; the pressure shock should be prevented and the reverse pressurization should be prohibited during operation.
The press type modified fiber bundle filter is a mechanical pressure type fiber filter with advanced structure and excellent performance, which adopts a novel bundle-shaped soft filler fiber as a filter element, the diameter of the filter material can reach dozens of microns or even several microns, and has the advantages of large specific surface area, small filtering resistance and the like, thereby solving the problems that the filtering precision of granular filter materials is limited by the particle size of the filter materials and the like. The modified fiber bundle absorbs oil but does not stick oil, the backwashing is easy to desorb, the cleaning is relatively thorough, the water consumption for backwashing is small, and the like. When the device is used, the numerical value of a pressure gauge is observed, and when the water inlet and outlet pressure difference is greater than 0.018MPa or the flow rate is obviously reduced, the water inlet and outlet valves are closed to prepare backwashing; when the differential pressure after the back washing is still larger than 0.018MPa, the fiber bundle is considered to be replaced; the pressure shock should be prevented and the reverse pressurization should be prohibited during operation.
As shown in fig. 3, the treatment process of the oily sewage treatment equipment provided by this embodiment is as follows:
before being treated by the equipment, the oily sewage is firstly treated by an oil separation tank and then is converged into a regulating tank for homogenizing and equalizing the sewage;
the sewage after homogeneous uniform treatment is lifted to a multi-stage air flotation coalescence deoiling device through a water inlet lifting pump according to the design flow, a proper amount of flocculating agent is added into a total water inlet 10 through a dosing device, namely a first time of dosing point of the dosing agent, a second time of dosing point of the dosing agent is added with a coagulant aid, a third time of dosing point of the dosing agent is added with the flocculating agent, a fourth time of dosing point of the dosing agent is added with the coagulant aid, the dosing process is carried out through a dosing pump 22 (the type of the dosing agent is selected according to actual water quality, the dosing amount is determined according to water temperature, alkalinity and the like), organic colloid, bacteria, emulsified oil, sand suspended matters and other pollutants with flocculation tendency are rapidly coalesced in the sewage, the flocculation effect can be improved, and the pollutants are rapidly floated and removed after treatment.
The air flotation effluent enters a middle water tank, is pressurized to a three-stage filtering device by a filtering lifting pump 7, filters residual fine suspended matters, solid particles and residual dispersed oil in sewage, and the effluent of the filtering device enters a clean water tank. Specifically, most of dispersed oil in water is removed through a walnut shell filter 4, and then part of suspended matters are filtered 5 through an AFM filter, and part of COD can be degraded. And finally, performing finer filtration by using a compression type fiber bundle filter 6 to ensure that the water quality stably reaches the standard.
The treatment process of this embodiment is cooperated with a clean water tank and a sludge tank, a clean water pump is placed in the clean water tank, and a filtration backwashing system is cooperated for backwashing of the filter device. The sludge produced by backwashing and scum and sludge produced by air floatation enter a sludge tank for coarse filtration, filtrate automatically flows into a regulating tank, and the sludge on the surface of the sludge tank is periodically cleaned.
The above embodiments are only preferred embodiments of the present invention, the scope of protection of the present invention is not limited thereto, and any person skilled in the art can obviously obtain simple changes or equivalent replacements of the technical solutions within the technical scope of the present invention.
Claims (7)
1. An oily sewage treatment device is characterized by comprising a multi-stage air floatation coalescence deoiling device, a dosing device, a three-stage filtering device and a filtering backwashing device;
the multistage air floatation coalescence deoiling device comprises a multistage air floatation coalescence deoiling integrated machine (1), a dissolved air pump (2) and a dissolved air tank (3); the interior of the multi-stage air floatation coalescence deoiling all-in-one machine (1) is sequentially divided into a first-stage air floatation separation area, a second-stage air floatation separation area and a third-stage coalescence deoiling area according to the oil inlet direction, and a water outlet of the third-stage coalescence deoiling area is communicated with an intermediate water tank;
the oily sewage is pressurized and lifted and then is connected into a main water inlet (10) of the equipment, the main water inlet (10) is divided into two paths, one path is connected with a water inlet of the dissolved air pump (2), and the other path is connected with a water inlet of the multi-stage air floatation coalescence oil removal all-in-one machine (1); the water outlet of the dissolved air pump (2) is connected with the water inlet of the dissolved air tank (3), the outlet of the dissolved air tank (3) is divided into three pipelines which are respectively connected with a first-stage air-flotation dissolved air water inlet, a second-stage air-flotation dissolved air water inlet and a third-stage oil-removing dissolved air water inlet of the multi-stage air-flotation coalescence oil-removing integrated machine (1);
the three-stage filtering device comprises a walnut shell filter (4), an AFM filter (5) and a compression type modified fiber bundle filter (6) which are sequentially connected in series; the water inlet of the walnut shell filter (4) is connected with a filtration lift pump (7), and the filtration lift pump (7) is communicated with the water outlet of the intermediate water tank; the water outlet of the compression type modified fiber bundle filter (6) is a water outlet (8) of the equipment, and the sewage outlet is a total sewage outlet (9) of the equipment;
the dosing device comprises four dosing modules, dosing points corresponding to the four dosing modules are respectively a main water inlet pipeline, a multi-stage air floatation coalescence degreasing all-in-one water inlet pipeline (11), a primary air floatation water outlet pipeline (12) and a secondary air floatation water inlet pipeline (13), and chemicals added at the four dosing points are respectively a flocculating agent, a coagulant aid, a flocculating agent and a coagulant aid;
the filtering backwashing device is connected with the walnut shell filter (4) and is used for backwashing the three-stage filtering device.
2. The oily sewage treatment equipment according to claim 1, wherein the filtration backwashing system comprises a backwashing stirrer (14), a backwashing air compressor (15) and a backwashing lift pump (16), the backwashing stirrer (14) is arranged at the top of the walnut shell filter (4), the backwashing air compressor (15) provides a backwashing air source for the three-stage filtering device, the backwashing lift pump (16) is arranged on a backwashing water inlet pipeline (17), the backwashing lift pump (16) provides a backwashing water source for the three-stage filtering device, and electric valves (34) are arranged on an air source pipeline and a water source pipeline of the filtration backwashing system.
3. The oily sewage treatment device of claim 1, wherein an oleophilic coalesced deoiling material is arranged in the tertiary coalesced deoiling zone.
4. The oily sewage treatment equipment according to claim 1, wherein each dosing module comprises a dosing barrel (18), and a pharmaceutical stirrer (19), a reed pipe liquid level meter (20) and a glass rotameter (21) which are arranged in the dosing barrel (18), wherein a dosing metering pump (22) is arranged at the top of the dosing barrel (18), a check valve (23) is arranged on a medicine discharge pipe of the dosing barrel (18), and a water inlet of each dosing barrel (18) is connected with a filtered water production port (8) through a dosing water inlet pipe (33).
5. The oily sewage treatment equipment according to claim 1, wherein the AFM filter (5) is internally provided with an AFM special filter material, the compression type fiber bundle filter is provided with a hydraulic pump station (24) and a hydraulic cylinder (25), the hydraulic pump station (24) is connected with the hydraulic cylinder (25) through a hydraulic oil pipe (29), and the fiber bundle compression and stretching states are switched by the operation of the hydraulic pump station (24).
6. The oily water treatment equipment according to claim 1, wherein a primary air-flotation regulating valve (26) is arranged on a pipeline of the primary air-flotation separation chamber, and a secondary air-flotation regulating valve (27) is arranged on a pipeline of the secondary air-flotation separation chamber.
7. The oily sewage treatment equipment according to claim 1, further comprising a control cabinet (28), wherein the control cabinet (28) generates control instructions for the multistage air-flotation coalescence oil removal device, the dosing device, the three-stage filtering device and the filtering backwashing device, and monitors the working states of the multistage air-flotation coalescence oil removal device, the dosing device, the three-stage filtering device and the filtering backwashing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023114184.4U CN214457302U (en) | 2020-12-22 | 2020-12-22 | Oily sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023114184.4U CN214457302U (en) | 2020-12-22 | 2020-12-22 | Oily sewage treatment equipment |
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| CN214457302U true CN214457302U (en) | 2021-10-22 |
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| CN202023114184.4U Active CN214457302U (en) | 2020-12-22 | 2020-12-22 | Oily sewage treatment equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114538644A (en) * | 2022-03-23 | 2022-05-27 | 威瑞泰科技发展(宁波)有限公司 | Method and system for treating oily sewage |
| CN114588670A (en) * | 2022-02-07 | 2022-06-07 | 常州机电职业技术学院 | Filter and filtering method |
-
2020
- 2020-12-22 CN CN202023114184.4U patent/CN214457302U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114588670A (en) * | 2022-02-07 | 2022-06-07 | 常州机电职业技术学院 | Filter and filtering method |
| CN114538644A (en) * | 2022-03-23 | 2022-05-27 | 威瑞泰科技发展(宁波)有限公司 | Method and system for treating oily sewage |
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