CN105858801B - High salinity oily sewage aftertreatment device - Google Patents
High salinity oily sewage aftertreatment device Download PDFInfo
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- CN105858801B CN105858801B CN201610058834.7A CN201610058834A CN105858801B CN 105858801 B CN105858801 B CN 105858801B CN 201610058834 A CN201610058834 A CN 201610058834A CN 105858801 B CN105858801 B CN 105858801B
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- 239000010865 sewage Substances 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 136
- 238000000926 separation method Methods 0.000 claims abstract description 62
- 239000011550 stock solution Substances 0.000 claims abstract description 36
- 238000007667 floating Methods 0.000 claims description 20
- 230000007704 transition Effects 0.000 claims description 10
- 238000009297 electrocoagulation Methods 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 10
- 239000013043 chemical agent Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 11
- 238000000605 extraction Methods 0.000 description 6
- 238000005189 flocculation Methods 0.000 description 6
- 230000016615 flocculation Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 239000013535 sea water Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018084 Al-Fe Inorganic materials 0.000 description 1
- 229910018192 Al—Fe Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cyclones (AREA)
- Removal Of Floating Material (AREA)
Abstract
The invention discloses a high-salinity oily sewage post-treatment device, which comprises a cyclone separator, a stock solution tank and a liquid collecting tank, wherein the cyclone separator comprises a separation cone and a tail pipe, an opening at the upper end of the tail pipe is communicated with an opening at the lower end of the separation cone, the opening at the upper end of the separation cone is sealed by a cone top circular plate, a tangential liquid inlet pipe is arranged on the separation cone, the liquid collecting tank is positioned below the tail pipe, the stock solution extracting pump is provided with a stock solution inlet pipe and a stock solution outlet pipe, the inlet end of the stock solution inlet pipe extends into the stock solution tank, the outlet end of the stock solution outlet pipe is communicated with the tangential liquid inlet pipe, a core pipe is arranged in the cyclone separator, the upper end of the core pipe is connected to an oil collecting tank through an oil. The invention has the beneficial effects that: the oil-water separation can be realized, no additional chemical agent is needed, the equipment can be recycled, and the overall cost is low; the treatment process is very continuous, the work station does not need to be paused and switched, and the working efficiency is high; continuously separates and automatically collects oil, and has good treatment effect.
Description
Technical Field
The invention belongs to the technical field of oily sewage treatment, and particularly relates to a high-salinity oily sewage post-treatment device.
Background
In the fields of oil exploitation industry, marine ship transportation industry and the like, oil-containing sewage, oil-containing seawater and the like often need to be subjected to post-treatment, so that oil stain residue is avoided, and the environment is prevented from being polluted. At present, the methods for treating oily sewage at home and abroad mainly comprise the following three types: chemical treatment, physical treatment and biochemical treatment. The physical treatment method does not need additional substances, the equipment can be repeatedly used, the overall cost is low, and the method is a method with more use. For the treatment of large amount of oily sewage, centrifugal separation is also frequently used. However, the prior art has still shortcomings in terms of comprehensive consideration of separation efficiency, separation cost and separation effect when treating oil-containing sewage.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the treatment device which has a reasonable structure, good treatment capacity, lower overall cost and good treatment effect, and can quickly treat a large amount of oily sewage and oily seawater.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high salinity oily sewage post-treatment device comprises a cyclone separator, a stock solution tank and a liquid collecting tank, wherein the cyclone separator comprises a separation cone and a vertical tail pipe coaxially connected with the separation cone, the upper end and the lower end of the separation cone are both open, the upper end and the lower end of the tail pipe are both open, the upper end opening of the separation cone is larger than the lower end opening of the separation cone, the upper end opening of the tail pipe is communicated with the lower end opening of the separation cone, the upper end opening of the separation cone is sealed by a cone top circular plate, the separation cone is provided with a tangential liquid inlet pipe communicated with the inside of the separation cone, the liquid collecting tank is positioned below the tail pipe, the device also comprises a stock solution extracting pump, the stock solution extracting pump is provided with a stock solution inlet pipe and a stock solution outlet pipe, the inlet end of the stock solution inlet pipe extends into the stock solution tank, the outlet end of the stock solution outlet pipe is communicated with the tangential liquid inlet, the core pipe upper end is connected to an oil collecting tank through an oil collecting pipeline, is equipped with a plurality of pipe inlet ports with the inside intercommunication of core pipe on the core pipe, still includes a circulating pump, is equipped with into circulation liquid pipe, play circulation liquid pipe on the circulating pump, and the entrance point of advancing circulation liquid pipe stretches into the collecting tank, and the exit end and the tangential feed liquor pipe intercommunication of going out circulation liquid pipe are equipped with the circulating liquid on-off valve on going out the circulation liquid pipe, be equipped with horn mouth feed liquor pipe on advancing the stoste pipe, the upper end of horn mouth feed liquor pipe and the entrance point intercommunication of advancing the stoste pipe, the lower extreme of horn mouth feed liquor pipe is equipped with the miscellaneous filter screen of sieve.
Preferably, the separation cone is internally provided with a rotation assisting cylinder with an opening at the upper end and an opening at the lower end, the rotation assisting cylinder is coaxial with the separation cone, the upper end of the rotation assisting cylinder is hermetically connected with the cone top circular plate, and the height of the rotation assisting cylinder is more than two thirds of the height of the separation cone.
Preferably, the top of the side wall of the rotation assisting cylinder is provided with a plurality of backflow holes.
Preferably, the tangential liquid inlet pipe axis is parallel to a tangent of the separation cone.
As preferred, be equipped with the self-interacting pipe that can slide from top to bottom in the relative core pipe in the core pipe, on the self-interacting pipe, the equal opening of lower extreme, sliding seal cooperation between self-interacting outside of tubes lateral wall and the core pipe inside wall, the self-interacting pipe lower extreme stretches out outside the core pipe, self-interacting pipe lower extreme is equipped with seals self-interacting pipe lower extreme open-ended shrouding down, be equipped with the body on the shrouding down, be equipped with floating base on the body, be equipped with the direction montant of being connected with the tail pipe in the tail pipe, the transversal rectangle that personally submits of direction montant, direction montant and floating base sliding connection, be equipped with a plurality of and the inside pipe oil through hole that communicates of self-interacting pipe on the self-interacting: the aperture of the pipe oil through hole is the same as that of the pipe oil inlet hole, and the axis of the pipe oil through hole coincides with that of the pipe oil inlet hole.
Preferably, the guide vertical rod is connected with the tail pipe through a frame body, the frame body comprises at least one transverse connecting rod, one end of the transverse connecting rod is fixed with the inner side wall of the tail pipe, and the lower end of the guide vertical rod is connected with the transverse connecting rod.
Preferably, the oil collecting pipeline comprises an oil collecting main pipe and a transition connecting pipe, one end of the oil collecting main pipe is communicated with the oil collecting tank, the other end of the oil collecting main pipe is communicated with one end of the transition connecting pipe, and the other end of the transition connecting pipe is communicated with the upper end of the core pipe.
Preferably, an oil collecting pump and an oil collecting one-way valve are arranged on the oil collecting main pipe, the liquid pumping direction of the oil collecting pump is from the core pipe to the oil collecting pump, the liquid discharging direction of the oil collecting pump is from the oil collecting pump to the oil collecting tank, the passing direction of the oil collecting one-way valve is from the oil collecting pump to the oil collecting tank, and a liquid inlet on-off valve is arranged between the raw liquid outlet pipe and the tangential liquid inlet pipe.
Preferably, the device further comprises an electric flocculation post-treatment structure and a post-treatment pump, wherein the electric flocculation post-treatment structure comprises a treatment container, a post-treatment liquid inlet pipe, a post-treatment liquid outlet pipe, a positive electrode plate and a negative electrode plate, a plurality of liquid inlet heads communicated with the post-treatment liquid inlet pipe are arranged on the post-treatment liquid inlet pipe, a plurality of liquid outlet heads communicated with the post-treatment liquid outlet pipe are arranged on the post-treatment liquid outlet pipe, a row of arc-shaped partition plates are arranged in the treatment container, two adjacent arc-shaped partition plates form a treatment single cavity in the treatment container, the treatment single cavity corresponds to the liquid inlet heads one by one, the treatment single cavities correspond to the liquid outlet heads one by one, the liquid inlet heads and the liquid outlet heads are both arranged in the corresponding treatment single cavities, a treatment liquid inlet pipe and a treatment liquid outlet pipe are arranged on the post-treatment pump, the inlet end of the treatment liquid.
The invention has the beneficial effects that: the oil-water separation device can realize the high-efficiency separation of oil and water, is simple to operate, does not need to use additional chemical agents, can be repeatedly used, and has lower overall cost; the treatment process is very continuous, the work station does not need to be paused and switched, and the working efficiency is high; continuously separates and automatically collects oil, and has good treatment effect.
Drawings
FIG. 1 is a schematic structural view of the present invention
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 1;
fig. 4 is an enlarged view at C in fig. 1.
In the figure: a raw liquid tank 1, a raw liquid extraction pump 11, a raw liquid inlet pipe 12, a bell mouth liquid inlet pipe 121, a screening and impurity filtering screen 122, a raw liquid outlet pipe 13, a liquid inlet on-off valve 131, a liquid collecting tank 2, a separation cone 3, a cone top circular plate 31, a tangential liquid inlet pipe 32, a rotation assisting cylinder 33, a backflow hole 331, a tail pipe 4, a transverse connecting rod 41, a friction block 42, a core pipe 5, an oil collecting tank 51, a pipe oil inlet hole 52, a self-adjusting pipe 53, a pipe lower sealing plate 531 and a floating body 532, the device comprises a floating base 533, a guide vertical rod 534, a pipe oil through hole 535, an oil collection main pipe 54, a transition connecting pipe 55, an oil collection pump 56, an oil collection one-way valve 57, a post-treatment pump 61, a treatment container 62, a post-treatment liquid inlet pipe 63, a liquid inlet head 631, a post-treatment liquid outlet pipe 64, a liquid outlet head 641, an arc-shaped electrode plate 65, a treatment liquid inlet pipe 66, a treatment liquid outlet pipe 67, a treatment liquid outlet on-off valve 671, a circulating pump 71, a circulating liquid inlet pipe 72, a circulating liquid outlet pipe 73 and a circulating liquid on-off valve 74.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Example 1: in the embodiment shown in fig. 1 to 4, a high salinity oily sewage post-treatment device comprises a cyclone separator, a stock solution tank 1 and a liquid collecting tank 2, wherein the cyclone separator comprises a separation cone 3 which is in a circular truncated cone shape, a tail pipe 4 which is coaxially connected with the separation cone and is vertical, the upper end and the lower end of the separation cone are both open, the upper end and the lower end of the tail pipe are both open, the upper end opening of the separation cone is larger than the lower end opening of the separation cone, the upper end opening of the tail pipe is communicated with the lower end opening of the separation cone, the upper end opening of the separation cone is sealed by a cone top circular plate 31, the separation cone is provided with a tangential liquid inlet pipe 32 which is communicated with the inside of the separation cone, the liquid collecting tank is positioned below the tail pipe, the device also comprises a stock solution extracting pump 11, the stock solution extracting pump is provided with a stock solution inlet pipe 12 which is communicated with an inlet of the stock solution extracting pump and a stock solution outlet pipe 13 which is communicated with an, the cyclone separator is internally provided with a core pipe 5 which is coaxial with a tail pipe, the upper end of the core pipe penetrates through a cone top circular plate and extends out of the cyclone separator, the upper end of the core pipe is connected to an oil collecting tank 51 through an oil collecting pipeline, the core pipe is provided with a plurality of pipe oil inlet holes 52 which are communicated with the inside of the core pipe, the cyclone separator further comprises a circulating pump 71, the circulating pump is provided with a circulating liquid inlet pipe 72 communicated with the inlet of the circulating pump and a circulating liquid outlet pipe 73 communicated with the outlet of the circulating pump, the inlet end of the circulating liquid inlet pipe extends into the liquid collecting tank, the outlet end of the circulating liquid outlet pipe is communicated with the tangential liquid inlet pipe, the circulating liquid outlet pipe is provided with a circulating liquid on-off valve 74, the raw liquid inlet pipe is provided with a horn mouth liquid inlet pipe 121, the upper end of the horn mouth liquid inlet pipe is. The circulating liquid on-off valve is used for controlling the on-off of the circulating liquid outlet pipe. The axial line of the tangential liquid inlet pipe is parallel to one tangential direction of the separation cone. The oily sewage (seawater) is stored in a stock solution tank, a stock solution extraction pump extracts stock solution (oily sewage) from the stock solution tank, the oily sewage reaches a tangential liquid inlet pipe through a stock solution inlet pipe, a stock solution extraction pump and a stock solution outlet pipe and is sent into a separation cone from the tangential liquid inlet pipe in a tangential direction (or an approximate tangential direction), and the oily sewage starts to flow spirally in the separation cone due to the upper part and the lower part of the separation cone and the action of gravity, so that the whole trend is that the oily sewage flows spirally downwards. Because of the density difference between oil and water, when the oily sewage is swirled at a high speed, the water is relatively attached to the inner wall of the separation cone, and oil droplets (oil) relatively move to the center (close to the axis of the separation cone). And as the whole fluid spirally moves downwards and the section is continuously reduced, the oil continuously moves to the center to converge into an oil core (the core pipe is positioned in the oil core), and the outer layer of the oil core is a 'water wall' (a large amount of water and a small amount of oil). The fluid enters the closing-in part (tail pipe) afterwards, and the fluid can generate back pressure to the upper section, so that the low-pressure oil core overflows upwards, enters the core pipe from the oil inlet hole of the pipe, enters the oil collecting tank through the oil collecting pipeline for collection, and is discharged into the liquid collecting tank through the opening at the lower end of the tail pipe downwards as for the outer water wall, thereby realizing the high-efficiency separation of oil and water, needing no additional chemical agent, recycling the equipment, having very continuous treatment process and lower overall cost. In addition, when needing, the circulating pump can follow the collecting tank and draw the oily sewage of processing, make it reach tangential feed liquor pipe through advancing the circulating liquid pipe, the circulating pump, go out the circulating liquid pipe (circulating liquid on-off valve opens at this moment, stoste extraction pump can work, also can be out of work, stoste extraction pump is out of work, need cut off stoste extraction pump place pipeline when out of work, guarantee fluid inflow separation awl), and send into in the separation awl from tangential feed liquor pipe once more, thereby can realize the multiple circulation separation processing, promote the treatment effect. Oily sea water is before getting into the stoste pipe, and earlier through sieving miscellaneous filter screen and horn mouth feed liquor pipe, sieve miscellaneous filter screen and can filter out bulky impurity, promote whole treatment effect, because when sieving miscellaneous again, partly filter screen hole can be blocked up temporarily to impurity, influence feed liquor efficiency, so adopt the initial feed liquor form of big end down's horn mouth feed liquor pipe, the guarantee initial feed liquor bore is enough big.
The separation cone is internally provided with a rotation assisting cylinder 33 with an upper end and a lower end both provided with openings, the rotation assisting cylinder is coaxial with the separation cone, the upper end of the rotation assisting cylinder is hermetically connected with the cone top circular plate, and the height of the rotation assisting cylinder is more than two thirds of the height of the separation cone. The top of the side wall of the rotation-assisting cylinder is provided with a plurality of backflow holes 331. The rotation-assisting cylinder forms a section of annular channel (between the rotation-assisting cylinder and the separation cone) to help the formation of rotational flow, and can also inhibit a large amount of interference flow formed by upward flow (as mentioned above, an oil core formed by back pressure and a part of water wall attached to the oil core) overflowing and dispersing, and can improve the stability of the treatment process. However, the local vortex and the vortex that upward flow direction outdiffusion formed still exist, and the setting of backward flow hole can let the updraft rise to the back of reaching the top, and partly follow the backward flow hole and flow out, form to the feed liquor and resist the back pressure, and the balance of control feed liquor on the whole has also further promoted the regularity and the stability that the interior fluid of separation awl flows, can effectively promote holistic water oil separating effect.
Be equipped with the relative core intraductal self-interacting pipe 53 that slides from top to bottom of the core in the core, on the self-regulating pipe, the equal opening of lower extreme, sliding seal cooperation between self-interacting outside of tubes lateral wall and the core pipe inside wall, the self-regulating pipe lower extreme stretches out outside the core pipe, self-regulating pipe lower extreme is equipped with seals down shrouding 531 from regulating pipe lower extreme open-ended pipe, be equipped with body 532 under the shrouding, be equipped with floating base 533 on the body, be equipped with the direction montant 534 of being connected with the tail pipe in the tail pipe, the transversal rectangle of personally submitting of direction montant, direction montant and floating base sliding connection, the slidable direction of floating base is upper and lower direction, be equipped with a plurality of pipe oil through holes that communicate with the self-regulating intraduct on the self-regulating pipe: the aperture of the pipe oil through hole is the same as that of the pipe oil inlet hole, and the axis of the pipe oil through hole coincides with that of the pipe oil inlet hole. The direction montant passes through the support body and is connected with the tail pipe, the support body includes an at least horizontal connecting rod 41, and horizontal connecting rod one end is fixed with the tail pipe inside wall, and direction montant lower extreme is connected with horizontal connecting rod. The tail pipe is internally provided with a plurality of friction blocks 42 fixed with the tail pipe, the friction blocks are contacted with the outer side wall of the self-adjusting pipe, at the beginning, because the oil content of the fluid is larger, at the moment, a part of the floating body is contacted with water, and the other part is contacted with oil, at the moment, the buoyancy force borne by the floating body is not enough to exceed the sum of the gravity (the gravity of the self-adjusting pipe, the whole floating body structure and the like) and the friction force (mainly the friction force between the friction blocks and the self-adjusting pipe, and the other small part is the friction force between the self-adjusting pipe and the core pipe and the like), so the self-adjusting pipe can not slide up and down, the total aperture of the oil passing (the aperture of the oil passing hole or the. When the oil content of the fluid is reduced (or the oil content is not high originally), the oil core becomes thin, the length of the oil core is reduced (the lower section of the oil core is replaced by water), the water wall becomes thick, and water is excessively close to the oil inlet hole of the pipe at the moment, so that water enters the core pipe (the self-adjusting pipe) easily if the oil inlet speed of the self-adjusting pipe is high, and the oil content ratio of the collected oil is influenced. In the scheme, after the oil content of the fluid is reduced to a certain degree, the oil core is shortened, so that the part of the floating body contacting water is increased, the part contacting oil is reduced, the buoyancy force on the floating body is increased, at a certain moment, the buoyancy force exceeds the sum of the gravity (the gravity of the self-adjusting pipe, the whole floating body structure and the like) and the friction force (mainly the friction force between the friction block and the self-adjusting pipe, the rest small parts are the friction force between the self-adjusting pipe and the core pipe and the like), the floating body starts to drive the self-adjusting pipe to move upwards, so that the oil inlet hole of the pipe and the oil inlet hole of the pipe start to be staggered, the total oil opening diameter is reduced, and therefore, the oil inlet speed in the self-adjusting pipe can be reduced, only oil can still enter the self-adjusting pipe, and partial water caused by too high liquid inlet speed. Correspondingly, the lower the oil content of the fluid is, the more the floating body drives the self-adjusting pipe to rise, the smaller the oil passing total aperture is, and therefore the automatic adjustment of the oil passing total aperture is realized. Moreover, when the oil content of the fluid is reduced to a certain degree, the floating body drives the self-adjusting pipe to rise to reach the limit position (the outside of the floating body is completely surrounded by water, and the buoyancy force borne by the floating body is completely from water), at the moment, the oil through hole of the pipe and the oil inlet hole of the pipe are completely staggered, the oil collecting pipeline stops collecting oil, and the possibility that water enters the oil collecting pipeline when the oil content of the fluid is very low is completely blocked.
The oil collecting pipeline comprises an oil collecting main pipe 54 and a transition connecting pipe 55, one end of the oil collecting main pipe is communicated with the oil collecting tank, the other end of the oil collecting main pipe is communicated with one end of the transition connecting pipe, and the other end of the transition connecting pipe is communicated with the upper end of the core pipe. The oil collecting main pipe is provided with an oil collecting pump 56 and an oil collecting one-way valve 57, the liquid pumping direction of the oil collecting pump is from the core pipe to the oil collecting pump, the liquid discharging direction of the oil collecting pump is from the oil collecting pump to the oil collecting tank, the passing direction of the oil collecting one-way valve is from the oil collecting pump to the oil collecting tank, and a liquid inlet on-off valve 131 is arranged between the raw liquid outlet pipe and the tangential liquid inlet pipe. The controllability and the accuracy of the treatment process can be improved through each pump and each valve.
The device also comprises an electric flocculation post-treatment structure and a post-treatment pump 61, wherein the electric flocculation post-treatment structure comprises a treatment container 62, a post-treatment liquid inlet pipe 63 and a post-treatment liquid outlet pipe 64, a plurality of liquid inlet heads 631 communicated with the post-treatment liquid inlet pipe are arranged on the post-treatment liquid inlet pipe, a plurality of liquid outlet heads 641 communicated with the post-treatment liquid outlet pipe are arranged on the post-treatment liquid outlet pipe, a row of arc-shaped electrode plates 65 are arranged in the treatment container, two adjacent arc-shaped electrode plates form a treatment single cavity in the treatment container, the treatment single cavity corresponds to the liquid inlet heads one to one, the treatment single cavities correspond to the liquid outlet heads one to one, the liquid inlet heads and the liquid outlet heads are both arranged in the corresponding treatment single cavities, a treatment liquid inlet pipe 66 communicated with an inlet of the post-treatment pump and a treatment liquid outlet pipe 67 communicated with an outlet of the post-treatment pump are arranged on the post-treatment pump, an inlet end, the treatment liquid outlet pipe is provided with a treatment liquid outlet on-off valve 671. After the separation treatment is finished, the oil content of the discharged treatment liquid is low, and the effect is not obvious when oil is removed by a physical method, so that the final treatment effect can be improved by adopting an electric flocculation method. The electrode plate can be made of aluminum-iron alloy plate with 10% iron content. Because the pure aluminum electrode plate generates Al (OH)3The flocculant has a good removal effect on most emulsified oil and suspended oil in the oily sewage, and has a poor removal effect on a small part of dissolved oil (COD) in the oily sewage. The Al-Fe alloy electrode plate can generate Fe with certain oxidizability3+Therefore, the dissolved oil with a small molecular structure can be oxidized. The electrode plate can adopt a semicircular vertical flow bending structure form, improves the flocculation efficiency relative to a horizontal flow electrode plate structure, and the bent electrode plate can also increase the flowing distance of the oily sewage in the reactor, increase the reaction time of the oily sewage, so that oil and pollutants in the oily sewage can be fully removed. The positive and negative electrodes of the electrode plate can be exchanged once at intervals of one end, so that the electric energy loss caused by water electrolysis due to concentration polarization near the electrode plate is avoided.
Claims (6)
1. A high salinity oily sewage post-treatment device is characterized by comprising a cyclone separator, a stock solution tank and a liquid collecting tank, wherein the cyclone separator comprises a separation cone and a vertical tail pipe coaxially connected with the separation cone, the upper end and the lower end of the separation cone are both provided with openings, the upper end and the lower end of the tail pipe are both provided with openings, the upper end opening of the separation cone is larger than the lower end opening of the separation cone, the upper end opening of the tail pipe is communicated with the lower end opening of the separation cone, the upper end opening of the separation cone is sealed by a cone top circular plate, the separation cone is provided with a tangential liquid inlet pipe communicated with the inside of the separation cone, the liquid collecting tank is positioned below the tail pipe, the device also comprises a stock solution extracting pump, the stock solution extracting pump is provided with a stock solution inlet pipe and a stock solution outlet pipe, the inlet end of the stock solution inlet pipe extends into the stock solution tank, the outlet end of the stock solution outlet pipe is communicated, the upper end of the core pipe is connected to an oil collecting tank through an oil collecting pipeline, the core pipe is provided with a plurality of pipe oil inlet holes communicated with the inside of the core pipe, the oil collecting tank further comprises a circulating pump, the circulating pump is provided with a circulating liquid inlet pipe and a circulating liquid outlet pipe, the inlet end of the circulating liquid inlet pipe extends into the liquid collecting tank, the outlet end of the circulating liquid outlet pipe is communicated with the tangential liquid inlet pipe, the circulating liquid outlet pipe is provided with a circulating liquid on-off valve, the raw liquid inlet pipe is provided with a bell-mouth liquid inlet pipe, the upper end of the bell-mouth liquid inlet pipe is communicated with the inlet end of the raw liquid inlet pipe, the lower end of the bell-mouth liquid; the separation cone is internally provided with a rotation assisting cylinder with an opening at the upper end and an opening at the lower end, the rotation assisting cylinder is coaxial with the separation cone, and the upper end of the rotation assisting cylinder and a cone top circular plate are arranged; the top of the side wall of the rotation assisting cylinder is provided with a plurality of backflow holes;
the intraductal gliding self-interacting pipe from top to bottom that can be equipped with core relatively in the core, on the self-regulation pipe, the equal opening of lower extreme, sliding seal cooperation between self-interacting outside of tubes lateral wall and the core pipe inside wall, the self-interacting pipe lower extreme stretches out outside the core pipe, self-interacting pipe lower extreme is equipped with seals shrouding under the open-ended pipe of self-regulation pipe lower extreme, be equipped with the body on the shrouding under the pipe, be equipped with floating base on the body, be equipped with the direction montant of being connected with the tail pipe in the tail pipe, the transversal rectangle of personally submitting of direction montant, direction montant and floating base sliding connection, be equipped with the pipe oil through hole of a plurality of and the inside intercommunication of self-regulation pipe: the aperture of the pipe oil through hole is the same as that of the pipe oil inlet hole, and the axis of the pipe oil through hole coincides with that of the pipe oil inlet hole.
2. The apparatus for post-treating high salinity oily sewage according to claim 1, wherein the axis of the tangential inlet pipe is parallel to a tangential direction of the separation cone.
3. The high salinity oily sewage aftertreatment device of claim 1 or 2, wherein the vertical guide rods are connected with the tail pipe through a frame body, the frame body comprises at least one transverse connecting rod, one end of the transverse connecting rod is fixed with the inner side wall of the tail pipe, and the lower ends of the vertical guide rods are connected with the transverse connecting rod.
4. The post-treatment device for high-salinity oily sewage according to claim 1 or 2, wherein the oil collecting pipeline comprises a main oil collecting pipe and a transition connecting pipe, one end of the main oil collecting pipe is communicated with the oil collecting tank, the other end of the main oil collecting pipe is communicated with one end of the transition connecting pipe, and the other end of the transition connecting pipe is communicated with the upper end of the core pipe.
5. The post-treatment device for high salinity oily sewage according to claim 4, wherein the oil collecting main pipe is provided with an oil collecting pump and an oil collecting one-way valve, the oil collecting pump pumps the oil from the core pipe to the oil collecting pump, the oil collecting pump discharges the oil from the oil collecting pump to the oil collecting tank, the oil collecting one-way valve can pass from the oil collecting pump to the oil collecting tank, and a liquid inlet on-off valve is arranged between the raw liquid outlet pipe and the tangential liquid inlet pipe.
6. The post-treatment device for high-salinity oily sewage according to claim 1, further comprising an electrocoagulation post-treatment structure and a post-treatment pump, wherein the electrocoagulation post-treatment structure comprises a treatment container, a post-treatment liquid inlet pipe and a post-treatment liquid outlet pipe, a plurality of liquid inlet heads communicated with the post-treatment liquid inlet pipe are arranged on the post-treatment liquid inlet pipe, a plurality of liquid outlet heads communicated with the post-treatment liquid outlet pipe are arranged on the post-treatment liquid outlet pipe, a row of arc-shaped electrode plates are arranged in the treatment container, two adjacent arc-shaped electrode plates form a treatment single cavity in the treatment container, the treatment single cavity corresponds to the liquid inlet heads one by one, the treatment single cavities correspond to the liquid outlet heads one by one, and the liquid inlet heads and the liquid outlet
The treatment liquid inlet pipe and the treatment liquid outlet pipe are arranged in the corresponding treatment single cavities, the inlet end of the treatment liquid inlet pipe extends into the liquid collecting tank, and the outlet end of the treatment liquid outlet pipe is communicated with the post-treatment liquid inlet pipe.
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| CN201610058834.7A CN105858801B (en) | 2016-01-27 | 2016-01-27 | High salinity oily sewage aftertreatment device |
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| CN102225382A (en) * | 2011-04-11 | 2011-10-26 | 东北石油大学 | Pitting oil collecting curved cyclone of overflow pipe |
| CN102417212A (en) * | 2011-10-17 | 2012-04-18 | 中国海洋石油总公司 | Cyclone gas-flotation separation device for treating oily sewage |
| CN203347776U (en) * | 2013-07-24 | 2013-12-18 | 东北石油大学 | Oil-gas-water three-phase flow gas-liquid separation device for yield profile logging |
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| CN201157703Y (en) * | 2007-11-28 | 2008-12-03 | 北京石油化工学院 | Compact type rotary flow air float separating device for oily wastewater treatment |
| CN103894001A (en) * | 2012-12-28 | 2014-07-02 | 赫菲斯热处理系统江苏有限公司 | Floating-type oil absorption device of oil-water separator |
| US20160045841A1 (en) * | 2013-03-15 | 2016-02-18 | Transtar Group, Ltd. | New and improved system for processing various chemicals and materials |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225382A (en) * | 2011-04-11 | 2011-10-26 | 东北石油大学 | Pitting oil collecting curved cyclone of overflow pipe |
| CN102417212A (en) * | 2011-10-17 | 2012-04-18 | 中国海洋石油总公司 | Cyclone gas-flotation separation device for treating oily sewage |
| CN203347776U (en) * | 2013-07-24 | 2013-12-18 | 东北石油大学 | Oil-gas-water three-phase flow gas-liquid separation device for yield profile logging |
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