CN118125637A - A treatment equipment for medium and low concentration oily wastewater - Google Patents

A treatment equipment for medium and low concentration oily wastewater Download PDF

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Publication number
CN118125637A
CN118125637A CN202211493368.7A CN202211493368A CN118125637A CN 118125637 A CN118125637 A CN 118125637A CN 202211493368 A CN202211493368 A CN 202211493368A CN 118125637 A CN118125637 A CN 118125637A
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collection tank
tank
filter
fixedly connected
pipe
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CN202211493368.7A
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Inventor
野世光
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Tianjin Chuangshi Energy Saving Technology Co ltd
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Tianjin Chuangshi Energy Saving Technology Co ltd
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Priority to CN202211493368.7A priority Critical patent/CN118125637A/en
Publication of CN118125637A publication Critical patent/CN118125637A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/14Maintenance of water treatment installations

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

本发明公开了一种中低浓度含油废水的处理设备,包括废水处理系统,所述废水处理系统包括第一沉淀收集罐、第二沉淀收集罐、杂质过滤器、过滤池、第一废油收集罐和第二废油收集罐,其中第一废油收集罐、第一沉淀收集罐、第二沉淀收集罐、杂质过滤器、过滤池和第二废油收集罐的内部依次相连通。本发明通过第一沉淀收集罐和第二沉淀收集罐对为中低浓度含油废水进行沉淀并初步分离油和水,之后通过杂质过滤器去除粗大颗粒,通过第一高分子过滤膜和第二高分子过滤膜进行过滤,第一高分子过滤膜支持反复使用,纤维耐受度高,过滤成本低,从而实现在低成本对中低浓度含油废水处理同时利于技能环保的目的。

The present invention discloses a treatment device for medium-low concentration oily wastewater, including a wastewater treatment system, wherein the wastewater treatment system includes a first sedimentation collection tank, a second sedimentation collection tank, an impurity filter, a filter tank, a first waste oil collection tank, and a second waste oil collection tank, wherein the interiors of the first waste oil collection tank, the first sedimentation collection tank, the second sedimentation collection tank, the impurity filter, the filter tank, and the second waste oil collection tank are sequentially connected. The present invention uses the first sedimentation collection tank and the second sedimentation collection tank to precipitate and preliminarily separate oil and water for medium-low concentration oily wastewater, then removes coarse particles through the impurity filter, and filters through the first polymer filter membrane and the second polymer filter membrane. The first polymer filter membrane supports repeated use, has high fiber tolerance, and has low filtering cost, thereby achieving the purpose of treating medium-low concentration oily wastewater at low cost while being beneficial to technical environmental protection.

Description

Treatment equipment for middle-low concentration oily wastewater
Technical Field
The invention relates to the technical field of oily wastewater treatment, in particular to a treatment device for medium-low concentration oily wastewater.
Background
Waste water containing oil substances discharged from industrial production process. The oily substances contained in the oily wastewater comprise natural petroleum, petroleum products, tar and fractions thereof, and edible animal and vegetable oils and fats, and the hazard of the oily wastewater is mainly represented by serious influence on soil, plants and water bodies: the oily wastewater can infiltrate into the soil pores to form an oil film, so that the blocking effect is generated, and air and moisture cannot infiltrate into the soil, thereby being unfavorable for the growth of crops and even leading the crops to die; after the oily wastewater is discharged into a water body, an oil film is generated on the water surface to prevent oxygen in the air from migrating to the water body, aquatic organisms can die due to a serious anoxic state, the wastewater is inevitably generated in the production process, and the production quantity is large, so that the method is particularly important for treating the oily wastewater.
However, in the prior art, when the method is actually used, some oily wastewater has low oil content, mainly contains oil pollution, has low chemical pollution degree, cannot be directly discharged, adopts a mode of evaporation or distillation for treatment, has high investment cost, and is not beneficial to energy conservation and environmental protection.
Disclosure of Invention
The invention aims to provide a treatment device for medium-low concentration oily wastewater, which solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the waste water treatment system comprises a first sedimentation collection tank, a second sedimentation collection tank, an impurity filter, a filter tank, a first waste oil collection tank and a second waste oil collection tank, wherein the interiors of the first waste oil collection tank, the first sedimentation collection tank, the second sedimentation collection tank, the impurity filter, the filter tank and the second waste oil collection tank are sequentially communicated;
The one end fixedly connected with of filtering ponds top is used for the second feed liquor pipe that is linked together with impurity filter inside, the inside activity of filtering ponds is equipped with first polymer filtration membrane and second polymer filtration membrane respectively, the top of filtering ponds front side end is three oil extraction branch pipes of fixedly connected with respectively, and the one end fixedly connected with oil extraction house steward that the filtering ponds position was kept away from to three oil extraction branch pipes, the bottom of filtering ponds front side end is three evacuation branch pipes respectively, and the one end fixedly connected with evacuation house steward that the filtering ponds position was kept away from to three evacuation branch pipes, the top fixedly connected with overflow mouth of first sedimentation tank rear side end, the bottom fixedly embedded of overflow mouth is in charge of, and the one end fixedly connected with return manifold that the overflow mouth position was kept away from to the return manifold, the one end fixedly run through of return manifold and extend to the inside of filtering ponds, the one end fixedly embedded with water purification export of the corresponding return manifold position of filtering ponds.
Preferably, a first liquid outlet pipe is fixedly connected between the output end of the first precipitation collection tank and the input end of the second precipitation collection tank, a second liquid outlet pipe is fixedly connected between the output end of the second precipitation collection tank and the input end of the impurity filter, a third liquid outlet pipe is fixedly connected with the output end of the impurity filter, and one end of the opposite face of the third liquid outlet pipe and one end of the opposite face of the second liquid inlet pipe are fixedly connected.
Preferably, one end of the first drain pipe corresponding to the first sedimentation collection tank is located at the bottom of the first sedimentation collection tank, one end of the second drain pipe corresponding to the second sedimentation collection tank is located at the bottom of the second sedimentation collection tank, the input end of the first waste oil collection tank is fixedly connected with a fourth liquid inlet pipe which is used for being communicated with the first sedimentation collection tank, the fourth liquid inlet pipe is fixedly connected with the middle of the side wall of the first sedimentation collection tank, and one end of the fourth liquid inlet pipe, which is far away from the first waste oil collection tank, is divided into three branches which are communicated with the inside of the first sedimentation collection tank from top to bottom.
Preferably, the input end of the second waste oil collecting tank is fixedly connected with a third liquid inlet pipe which is communicated with the inside of the filtering tank, and one end of the third liquid inlet pipe, which is opposite to the emptying main pipe, is fixedly connected with the other end of the third liquid inlet pipe.
Preferably, the middle parts of the first liquid inlet pipe, the third liquid inlet pipe and the fourth liquid inlet pipe are respectively and fixedly provided with a diaphragm pump for providing driving force, and the middle parts of three branches of the oil discharge branch pipe, the emptying branch pipe, the purified water outlet and the fourth liquid inlet pipe are respectively and fixedly provided with a control valve.
Preferably, the number of the first polymeric filtering membranes is three, the first polymeric filtering membranes are obliquely arranged in the filtering tank, and the second polymeric filtering membranes are vertically arranged at one end in the filtering tank.
Preferably, the impurity filter is a bag filter, and mainly comprises a tank body and a polymer membrane type filter bag, and an oil outlet pipe is fixedly embedded into one end side wall of the second sedimentation collection tank.
Preferably, the inner wall of the filter tank corresponding to the position of the first polymer filter membrane can be provided with a guide groove for positioning the first polymer filter membrane, a notch is formed in the top of the filter tank corresponding to the position of the first polymer filter membrane, and handles are fixedly connected to the tops of the first polymer filter membrane and the first polymer filter membrane.
Compared with the prior art, the invention has the beneficial effects that:
1. The method comprises the steps of carrying out precipitation on the oily wastewater with middle and low concentration through the first precipitation collection tank and the second precipitation collection tank, primarily separating oil and water, removing coarse particles in the water containing partial oil through the impurity filter, and filtering through the first high-molecular filtering membrane and the second high-molecular filtering membrane, wherein the first high-molecular filtering membrane has strong hydrophilicity and oleophobicity, high water passing rate of membrane materials and high oil separation purity, and the first high-molecular filtering membrane supports repeated use, and has high fiber tolerance and low filtering cost, so that the aim of treating the oily wastewater with middle and low concentration at low cost and simultaneously facilitating skill and environmental protection is fulfilled;
2. When the first high polymer filtering membrane is required to be replaced, the first high polymer filtering membrane and the second high polymer filtering membrane are directly lifted out of the notch at the top of the filtering tank through the handle, cleaning and replacement of the first high polymer filtering membrane and the second high polymer filtering membrane are completed, and the emptying branch pipe and the emptying main pipe are arranged, so that when the interior of the filtering tank is required to be cleaned or emptied, the reflux branch pipe is controlled to be in a communicating state, and liquid in the filtering tank is rapidly emptied.
Drawings
FIG. 1 is a flow chart of the whole structure of a treatment device for medium-low concentration oily wastewater;
FIG. 2 is a front sectional view of a filter tank structure of a treatment device for medium-low concentration oily wastewater;
FIG. 3 is a side sectional view of a filter tank structure of a treatment device for medium-low concentration oily wastewater;
FIG. 4 is a partial cross-sectional view of a filter tank structure of a treatment device for medium-low concentration oily wastewater.
In the figure: 1. a first precipitation collection tank; 2. a second precipitation collection tank; 3. an impurity filter; 4. a filtering tank; 5. a first waste oil collection tank; 6. a second waste oil collection tank; 7. a first liquid inlet pipe; 8. a first liquid outlet pipe; 9. a second liquid outlet pipe; 10. a third liquid outlet pipe; 11. a second liquid inlet pipe; 12. a first polymeric filtration membrane; 13. an oil discharge branch pipe; 14. an oil drain main pipe; 15. evacuating the branch pipe; 16. evacuating the main pipe; 17. an overflow port; 18. reflux branch pipe; 19. a return header; 20. a purified water outlet; 21. a third liquid inlet pipe; 22. a fourth liquid inlet pipe; 23. a second polymeric filtration membrane; 24. and an oil outlet pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides a technical solution: the waste water treatment system comprises a first sedimentation collection tank 1, a second sedimentation collection tank 2, an impurity filter 3, a filter tank 4, a first waste oil collection tank 5 and a second waste oil collection tank 6, wherein the interiors of the first waste oil collection tank 5, the first sedimentation collection tank 1, the second sedimentation collection tank 2, the impurity filter 3, the filter tank 4 and the second waste oil collection tank 6 are sequentially communicated;
The one end fixed mounting at filter vat 4 top has the second feed liquor pipe 11 that is used for being linked together with impurity filter 3 inside, filter vat 4 inside activity respectively is equipped with first polymer filtration membrane 12 and second polymer filtration membrane 23, first polymer filtration membrane 12 is polymer nanometer oil resistance fibrous material component, wherein first polymer filtration membrane 12 is strong in hydrophilicity oleophobicity, membrane material water passing rate is high, grease separation purity is high, and first polymer filtration membrane 12 supports repeatedly used, the fibre tolerance is high, the filtration cost is low, applicable scene is extensive, the industry grease, animal and plant grease, the alkane is all suitable for through class organic solvent, second polymer filtration membrane 23 is PT material component, filter vat 4 front side's top fixed mounting has three oil extraction minutes 13 respectively, and the one end fixed mounting that the filter vat 4 was kept away from to three oil extraction minutes 13 is equipped with oil extraction manifold 14, the bottom of filter vat 4 front side end respectively fixed mounting has three evacuation minutes 15, and the one end fixed mounting that the filter vat 4 positions is kept away from to three evacuation minutes 15, and overflow sedimentation tank 1 rear side end is equipped with 17, overflow tank 17 and return pipe 17 fixed mounting return pipe 17, return pipe 19 fixed mounting one end is kept away from the filter vat 19, return pipe 19 fixed mounting is corresponding to the return pipe 19, return pipe fixed mounting one end is kept away from the filter vat 19, the fixed mounting is inserted into the return pipe is fixed position is equipped with the return pipe 19.
A first liquid outlet pipe 8 is fixedly arranged between the output end of the first precipitation collection tank 1 and the input end of the second precipitation collection tank 2, a second liquid outlet pipe 9 is fixedly arranged between the output end of the second precipitation collection tank 2 and the input end of the impurity filter 3, a third liquid outlet pipe 10 is fixedly arranged at the output end of the impurity filter 3, one end of the third liquid outlet pipe 10 opposite to the second liquid inlet pipe 11 is fixedly arranged at the opposite end of the third liquid outlet pipe, a prefilter device for filtering large particles is arranged between the impurity filter 3 and the second liquid outlet pipe 9, the prefilter device comprises a shell and a filter screen, and a differential pressure alarm for giving a differential pressure alarm and closing the function of the second liquid outlet pipe 9 is arranged between the impurity filter 3 and the second liquid outlet pipe 9.
One end of the first liquid outlet pipe 8 corresponding to the position of the first sedimentation collection tank 1 is located at the bottom of the first sedimentation collection tank 1, one end of the second liquid outlet pipe 9 corresponding to the position of the second sedimentation collection tank 2 is located at the bottom of the second sedimentation collection tank 2, a fourth liquid inlet pipe 22 used for being communicated with the first sedimentation collection tank 1 is fixedly arranged at the input end of the first waste oil collection tank 5, the fourth liquid inlet pipe 22 is fixedly arranged in the middle of the side wall of the first sedimentation collection tank 1, one end of the fourth liquid inlet pipe 22, far away from the position of the first waste oil collection tank 5, is divided into three branches communicated with the inside of the first sedimentation collection tank 1 from top to bottom, and control valves are respectively and fixedly arranged in the middle of the three branches of the fourth liquid inlet pipe 22, so that the first waste oil collection tank 5 can select high position, middle position and low position to extract waste oil according to requirements through the fourth liquid inlet pipe 22.
The input end of the second waste oil collecting tank 6 is fixedly provided with a third liquid inlet pipe 21 which is communicated with the interior of the filter tank 4, and one end of the third liquid inlet pipe 21 opposite to the emptying main pipe 16 is fixedly provided.
The middle parts of the first liquid inlet pipe 7, the third liquid inlet pipe 21 and the fourth liquid inlet pipe 22 are respectively and fixedly provided with a diaphragm pump for providing driving force, and the middle parts of three branches of the oil discharging branch pipe 13, the emptying branch pipe 15, the purified water outlet 20 and the fourth liquid inlet pipe 22 are respectively and fixedly provided with a control valve.
The number of the first polymeric filtering membranes 12 is three, the first polymeric filtering membranes 12 are obliquely arranged in the filtering tank 4, and the second polymeric filtering membranes 23 are vertically arranged at one end in the filtering tank 4.
The impurity filter 3 is a bag filter, and mainly comprises a tank body and a polymer membrane type filter bag, and an oil outlet pipe 24 is fixedly embedded into one end side wall of the second sedimentation collection tank 2.
The inner wall at the position of the filter tank 4 corresponding to the first macromolecule filter membrane 12 can be provided with a guide groove for positioning the first macromolecule filter membrane 12, a notch is formed in the top of the filter tank 4 corresponding to the position of the first macromolecule filter membrane 12, a handle is fixedly arranged at the tops of the first macromolecule filter membrane 12 and the second macromolecule filter membrane 23, when the first macromolecule filter membrane 12 needs to be replaced, the first macromolecule filter membrane 12 and the second macromolecule filter membrane 23 are directly lifted out of the notch at the top of the filter tank 4 through the handle, cleaning and replacement of the first macromolecule filter membrane 12 and the second macromolecule filter membrane 23 are completed, and an emptying branch pipe 15 and an emptying main pipe 16 are arranged, so that when the inside of the filter tank 4 needs to be cleaned or emptied, the reflux branch pipe 18 is in a communicating state through control at the moment, and liquid in the filter tank 4 is rapidly emptied.
Working principle: when in use, the invention pumps the oily wastewater into the first precipitation collection tank 1 through the first liquid inlet pipe 7 by the diaphragm pump at the middle part of the first liquid inlet pipe 7, and precipitates the oily wastewater in the first precipitation collection tank 1 and the second precipitation collection tank 2 through the first liquid outlet pipe 8, and carries out simple oil-water separation on the oily wastewater, namely, the density of oil is smaller than that of water, which can lead the oil to float above the water, namely, the first precipitation collection tank 1 and the second precipitation collection tank 2 can lead the oil level to be at the top parts of the first precipitation collection tank 1 and the second precipitation collection tank 2 in the precipitation process, at the moment, the diaphragm pump at the middle part of the fourth liquid inlet pipe 22 pumps the oil at the top part of the first precipitation collection tank 1 into the first waste oil collection tank 5 for recovery, and one end of the fourth liquid inlet pipe 22 far away from the first waste oil collecting tank 5 is divided into three branches communicated with the interior of the first precipitation collecting tank 1 from top to bottom, and meanwhile, the middle parts of the three branches of the fourth liquid inlet pipe 22 are respectively and fixedly provided with control valves, so that the first waste oil collecting tank 5 can select high position, middle position and low position to extract waste oil according to requirements through the fourth liquid inlet pipe 22, water precipitated at the bottom of the first precipitation collecting tank 1 enters the interior of the second precipitation collecting tank 2 through the first liquid outlet pipe 8 to be precipitated again, water precipitated at the bottom of the second precipitation collecting tank 2 enters the interior of the impurity filter 3 through the second liquid outlet pipe 9, coarse particles in water containing part of oil are removed through the impurity filter 3 which is a bag type filter, then water enters the filter tank 4 through the third liquid outlet pipe 10 and the second liquid inlet pipe 11, and is filtered through the first polymer filter membrane 12 and the second polymer filter membrane 23, demulsification treatment is carried out on the contained water in a physical mode, wherein the first polymer filter membrane 12 is a polymer nano oil-resistant fiber material component, the first polymer filter membrane 12 has strong hydrophilicity and oleophobicity, the water passing rate of the membrane material is high, the oil separation purity is high, the first polymer filter membrane 12 supports repeated use, the fiber tolerance is high, the filtering cost is low, the application scene is wide, the industrial oil, animal and vegetable oil and alkane-based organic solvents are applicable, the filtering cost is lower, and the high-purity oil-water separation can be carried out on the middle-low concentration oily wastewater, thereby realizing the purposes of treating the middle-low concentration oily wastewater at low cost and simultaneously facilitating skill and environmental protection, oil can be distributed at the top position in the water filtered by the first high polymer filtering membrane 12, at the moment, the diaphragm pump at the middle part of the third liquid inlet pipe 21 is matched with the oil discharging main pipe 14 and the oil discharging branch pipe 13 to pump the oil at the top into the second waste oil collecting tank 6 through the third liquid inlet pipe 21, the collection of waste oil is completed, meanwhile, clean water can be discharged outwards from the clean water outlet 20, wherein when the water depth in the filtering pond 4 reaches the overflow port 17, the liquid in the overflow port 17 is pumped into the filtering pond 4 again through the reflux branch pipe 18 and the reflux main pipe 19 under the action of the diaphragm pump at the middle part of the reflux main pipe 19, and filtering again, thereby the oil-water separation effect of this equipment has been strengthened to the multiple filtration, when needs change first polymer filtration membrane 12, through the handle directly with first polymer filtration membrane 12 and second polymer filtration membrane 23 follow the breach department at filtering ponds 4 top can, accomplish the clearance and the change to first polymer filtration membrane 12 and second polymer filtration membrane 23, through setting up evacuation and being in charge of 15 and evacuation house steward 16, make when needs wash or the evacuation to filtering ponds 4 inside, be in the intercommunication state through control backward flow is in this moment, and with the inside liquid quick evacuation of filtering ponds 4.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a treatment facility of well low concentration oiliness waste water, includes waste water treatment system, its characterized in that: the waste water treatment system comprises a first sedimentation collection tank (1), a second sedimentation collection tank (2), an impurity filter (3), a filter tank (4), a first waste oil collection tank (5) and a second waste oil collection tank (6), wherein the interiors of the first waste oil collection tank (5), the first sedimentation collection tank (1), the second sedimentation collection tank (2), the impurity filter (3), the filter tank (4) and the second waste oil collection tank (6) are sequentially communicated;
The one end fixedly connected with that filtering ponds (4) top is used for being linked together with impurity filter (3) inside second feed liquor pipe (11), the inside activity of filtering ponds (4) is equipped with first polymer filtration membrane (12) and second polymer filtration membrane (23) respectively, the top of filtering ponds (4) front side end is fixedly connected with three oil extraction branch pipe (13) respectively, and the one end fixedly connected with oil extraction manifold (14) of filtering ponds (4) position is kept away from to three oil extraction branch pipe (13), the bottom of filtering ponds (4) front side end is fixedly connected with three evacuation branch pipe (15) respectively, and the one end fixedly connected with evacuation manifold (16) of filtering ponds (4) position is kept away from to three evacuation branch pipe (15), the top fixedly connected with overflow mouth (17) of first sedimentation tank (1) rear side end, the bottom fixedly embedded of overflow mouth (17) has backward flow branch pipe (18), and the one end fixedly connected with backward flow manifold (19) of backward flow mouth (17) position is kept away from to one end fixedly connected with backward flow manifold (19), backward flow manifold (19) and the one end of filtering ponds (4) position is kept away from the corresponding to the one end of the fixed extension of filtering ponds (4) of backward flow manifold (20).
2. The treatment device for medium-low concentration oily wastewater according to claim 1, wherein: first drain pipe (8) of fixedly connected with between first precipitation collection jar (1) output and second precipitation collection jar (2) input, fixedly connected with second drain pipe (9) between second precipitation collection jar (2) output and impurity filter (3) input, the output fixedly connected with third drain pipe (10) of impurity filter (3), and the one end fixedly connected with of third drain pipe (10) and second feed liquor pipe (11) opposite face.
3. The treatment device for medium-low concentration oily wastewater according to claim 2, wherein: one end of the first drain pipe (8) corresponding to the position of the first sedimentation collection tank (1) is located at the bottom of the first sedimentation collection tank (1), one end of the second drain pipe (9) corresponding to the position of the second sedimentation collection tank (2) is located at the bottom of the second sedimentation collection tank (2), the input end of the first waste oil collection tank (5) is fixedly connected with a fourth liquid inlet pipe (22) which is communicated with the first sedimentation collection tank (1), the fourth liquid inlet pipe (22) is fixedly connected with the middle of the side wall of the first sedimentation collection tank (1), and one end of the fourth liquid inlet pipe (22) away from the position of the first waste oil collection tank (5) is divided into three branches which are communicated with the interior of the first sedimentation collection tank (1) from top to bottom.
4. A treatment apparatus for low-and medium-concentration oily wastewater according to claim 3, wherein: the input end of the second waste oil collecting tank (6) is fixedly connected with a third liquid inlet pipe (21) which is communicated with the interior of the filter tank (4), and one end of the third liquid inlet pipe (21) opposite to the emptying main pipe (16) is fixedly connected.
5. The treatment device for medium-low concentration oily wastewater according to claim 1, wherein: the middle parts of the first liquid inlet pipe (7), the third liquid inlet pipe (21) and the fourth liquid inlet pipe (22) are respectively and fixedly provided with a diaphragm pump for providing driving force, and the middle parts of three branches of the oil discharge branch pipe (13), the emptying branch pipe (15), the purified water outlet (20) and the fourth liquid inlet pipe (22) are respectively and fixedly provided with a control valve.
6. The treatment equipment for medium-low concentration oily wastewater according to claim 5, wherein: the number of the first high polymer filtering membranes (12) is three, the first high polymer filtering membranes (12) are obliquely arranged in the filtering tank (4), and the second high polymer filtering membranes (23) are vertically arranged at one end in the filtering tank (4).
7. The treatment device for medium-low concentration oily wastewater according to claim 6, wherein: the impurity filter (3) is a bag filter and mainly comprises a tank body and a polymer membrane type filter bag, and an oil outlet pipe (24) is fixedly embedded into one end side wall of the second sedimentation collection tank (2).
8. The treatment device for medium-low concentration oily wastewater according to claim 7, wherein: the inner wall of the filter tank (4) corresponding to the first polymer filter membrane (12) can be provided with a guide groove for positioning the first polymer filter membrane (12), a notch is formed in the top of the filter tank (4) corresponding to the first polymer filter membrane (12), and handles are fixedly connected to the tops of the first polymer filter membrane (12) and the second polymer filter membrane (23).
CN202211493368.7A 2022-11-25 2022-11-25 A treatment equipment for medium and low concentration oily wastewater Pending CN118125637A (en)

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