Phenolic wastewater treatment device

Abstract

The utility model discloses a phenol-containing wastewater treatment device which comprises a water treatment area, the treatment area comprises a first treatment unit and a second treatment unit, the first treatment unit comprises a first containing cavity, and the first containing cavity is provided with an inlet communicated with a phenol-containing wastewater drainage pipe; a plurality of first purification units for performing primary treatment on phenol-containing wastewater are arranged in the first accommodating cavity; in the water flow direction, the second treatment unit is located at the downstream of the first treatment unit, the second treatment unit comprises a second containing cavity, a second purification unit used for conducting secondary treatment on the phenol-containing wastewater is arranged in the second containing cavity, and the phenol-containing wastewater enters the first treatment unit from an inlet of the phenol-containing wastewater drainage pipe and then enters the second purification unit; after primary treatment by the first treatment unit, the wastewater enters the second treatment unit, and after secondary treatment by the second treatment unit, the wastewater reaches the direct emission standard. According to the application, the wastewater containing a small amount of phenol is treated, so that the direct discharge standard is reached.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial wastewater treatment, in particular to a phenol-containing wastewater treatment device. Background Art

[0002] Wastewater containing phenolic substances comes from a wide range of sources and is very harmful. Coking plants, gas plants, and gas generating stations all produce a large amount of phenolic wastewater, with a phenol concentration of 1000 to 3000 mg / L. These phenolic wastewaters usually also contain pollutants such as oil, suspended matter, sulfide, ammonia nitrogen, and cyanide. In addition, petroleum refineries, shale refineries, wood preservative plants, wood distillation plants, and various industries that use phenol as a raw material or synthesize phenol, such as resins, synthetic fibers, dyes, medicines, spices, pesticides, explosives, glass fibers, paints, disinfectants, floatants, chemical reagents, etc., can all produce phenolic wastewater of different quantities and properties during industrial production processes.

[0003] If phenol-containing wastewater is discharged into the water without treatment, it will harm the reproduction and survival of aquatic organisms. If the water contains 0.1-0.2 mg / L of phenol, fish will have a phenolic taste; if it contains 1 mg / L of phenol, it will affect fish spawning and migration; if it contains 5-10 mg / L of phenol, a large number of fish will die. Phenol in drinking water can affect human health. Even if the phenol concentration is only 0.002 mg / L, chlorine disinfection will produce a chlorophenol odor. Crops irrigated with high-concentration phenolic wastewater will wither and die.

[0004] At present, there are two basic ways to solve the problem of phenol-containing wastewater. The first way is to reform the process to reduce the phenol concentration in the wastewater, or to recycle and reuse the wastewater to reduce the discharge volume; the second way is to recycle the wastewater.

[0005] Phenol is an important chemical raw material. Extracting phenol from wastewater is an important source of phenol. There are many existing technical methods for treating phenol-containing wastewater, and they are all very mature. For example: solvent extraction, steam dephenolization, adsorption, ion exchange, chemical precipitation, biological treatment, chemical oxidation, catalytic oxidation, photochemical oxidation, electrochemical oxidation, combustion and other methods.

[0006] Most of the existing phenol-containing wastewater treatment technologies and devices are used to extract and recover phenol from wastewater with a large phenol content. For wastewater with a small phenol content, the trace amount of phenol does not have recovery value, but it cannot be directly discharged. Currently, there is no targeted equipment and products on the market that can conveniently treat the wastewater to meet the direct discharge standard.

[0007] Therefore, it is necessary to propose a phenol-containing wastewater treatment device to solve at least one of the above problems. Utility Model Content

[0008] In view of the defects existing in the prior art, the present invention provides a phenol-containing wastewater treatment device in an embodiment, which treats wastewater containing a small amount of phenol so as to meet the standard for direct discharge.

[0009] The specific technical solution of the implementation mode of the utility model is:

[0010] A phenol-containing wastewater treatment device, comprising: a water treatment area, the water treatment area comprising a first treatment unit and a second treatment unit, the first treatment unit comprising a first accommodating chamber, the first accommodating chamber having an inlet connected to a phenol-containing wastewater drainage pipe; a plurality of first purification units for primary treatment of the phenol-containing wastewater are arranged in the first accommodating chamber; the plurality of first purification units are arranged at intervals in the first accommodating chamber; the first purification unit is replaceably arranged in the first accommodating chamber;

[0011] In the direction of water flow, the second treatment unit is located downstream of the first treatment unit, and the second treatment unit includes a second accommodating chamber, in which a second purification unit for performing secondary treatment on the phenol-containing wastewater is arranged, and the second purification unit is replaceably arranged in the second accommodating chamber; after the phenol-containing wastewater enters the first treatment unit from the inlet of the phenol-containing wastewater drainage pipe, it undergoes primary treatment in the first treatment unit and then enters the second treatment unit, and meets the direct discharge standard after secondary treatment in the second treatment unit.

[0012] In a preferred embodiment, the first purification unit includes a plurality of independent activated carbon adsorption units.

[0013] In a preferred embodiment, a hoisting portion for cooperating with a hoisting structure is disposed on the top of the activated carbon adsorption unit, and a slot for engaging with the bottom of the activated carbon adsorption unit is disposed on the bottom of the first accommodating chamber.

[0014] In a preferred embodiment, the first accommodating cavity has a first opening end at the top, and a first cover body for sealing the first opening end is disposed on the first opening end, and the first cover body is movably disposed at the position of the first opening end.

[0015] In a preferred embodiment, the second purification unit includes a plurality of independent phenol-breaking bacteria units, and the phenol-breaking bacteria units are used to accommodate phenol-breaking bacteria.

[0016] In a preferred embodiment, the second purification unit further comprises a filter layer for filtering the scattered bacteria, and along the direction of water flow, the filter layer is located downstream of the phenol-breaking bacteria unit.

[0017] In a preferred embodiment, the second accommodating cavity has a second opening end at the top, and a second cover body for sealing the second opening end is disposed on the second opening end, and the second cover body is movably disposed at the position of the second opening end.

[0018] In a preferred embodiment, the phenol-containing wastewater treatment device also includes: a water lifting zone, which is located downstream of the second treatment unit along the water flow direction, and the water lifting zone is provided with a lifting pump. When the lifting pump is started, the phenol-containing wastewater treated by the second treatment unit can be discharged to the outside.

[0019] In a preferred embodiment, the outlet of the lift pump is further provided with a check valve and an electric butterfly valve. When the lift pump is started, the electric butterfly valve is restarted; when the lift pump is shut down, the electric butterfly valve is also switched from an open state to a closed state.

[0020] In a preferred embodiment, a partition is provided between the first treatment unit and the second treatment unit, and when the liquid level of the first treatment unit exceeds the partition, the phenol-containing wastewater after primary treatment overflows to the second treatment unit.

[0021] In a preferred embodiment, the phenol-containing wastewater treatment device further comprises: a control system, and detection equipment for detecting parameters of the phenol-containing wastewater of the first treatment unit and the second treatment unit.

[0022] In a preferred embodiment, the detection device includes: a first detection element for detecting the water quality of the phenol-containing wastewater, a second detection element for detecting the water temperature of the phenol-containing wastewater, and a third detection element for detecting the liquid level of the phenol-containing wastewater.

[0023] The technical solution of the utility model has the following significant beneficial effects:

[0024] The phenol-containing wastewater treatment device provided in the embodiment of the present application occupies a small area as a whole, and has a flexible installation location. It can effectively remove phenol in the wastewater by treating a small amount of phenol-containing wastewater to meet the direct discharge standard. It also has a high degree of automation and low cost of use, which can save the investment, land occupation and related operation and management personnel for setting up a plant-wide phenol-containing wastewater treatment station. The phenol-containing wastewater treatment device can be unmanned and intelligently controlled, and has the advantages of occupying a small area, being customizable, and being able to adjust different sizes to meet the land use plans provided by different users.

[0025] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0027] Figure 1 This is a schematic structural diagram of a phenol-containing wastewater treatment device provided in an embodiment of the present application.

[0028] Reference numerals of the present application:

[0029] 1. A first processing unit;

[0030] 10. A first accommodating chamber;

[0031] 11. A first cover;

[0032] 12. Import;

[0033] 100. A first purification unit;

[0034] 101. Hoisting department;

[0035] 2. A second processing unit;

[0036] 20. A second accommodating chamber;

[0037] 21. A second cover;

[0038] 200, second purification unit;

[0039] 210, filter layer;

[0040] 3. Water lifting area;

[0041] 31. Lifting pump;

[0042] 4. Phenolic wastewater drainage pipe;

[0043] 5. Isolation parts;

[0044] 6. Control system. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

[0046] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0048] The utility model provides a phenol-containing wastewater treatment device, which is used to treat wastewater containing a small amount of phenol so as to reach the standard of direct discharge.

[0049] See also Figure 1In an embodiment of the present application, a phenol-containing wastewater treatment device is provided, which may include: a water treatment area, the water treatment area includes a first treatment unit 1 and a second treatment unit 2, the first treatment unit 1 includes a first accommodating chamber 10, the first accommodating chamber 10 has an inlet 12 connected to a phenol-containing wastewater drainage pipe 4; a plurality of first purification units 100 for primary treatment of phenol-containing wastewater are arranged in the first accommodating chamber 10; the plurality of first purification units 100 are arranged at intervals in the first accommodating chamber 10; the first purification unit 100 is replaceably arranged in the first accommodating chamber 10. 0; along the water flow direction, the second treatment unit 2 is located downstream of the first treatment unit 1, and the second treatment unit 2 includes a second accommodating chamber 20, in which a second purification unit 200 for performing secondary treatment on the phenol-containing wastewater is arranged, and the second purification unit 200 is replaceably arranged in the second accommodating chamber 20; after the phenol-containing wastewater enters the first treatment unit 1 from the inlet 12 of the phenol-containing wastewater drainage pipe 4, it undergoes primary treatment in the first treatment unit 1 and then enters the second treatment unit 2, and after secondary treatment in the second treatment unit 2, it reaches the direct discharge standard.

[0050] In the implementation manner of the present application, the phenol-containing wastewater treatment device is an integrated skid-mounted equipment, which has the characteristics of low investment, small footprint, short process, wide application range, and flexible site layout.

[0051] The phenol-containing wastewater treatment device may include a water treatment zone, which is used to treat the phenol-containing wastewater containing a small amount of phenol so as to meet the direct discharge standard.

[0052] The water treatment area may include two isolated first treatment units 1 and second treatment units 2. Along the water flow direction, the first treatment unit 1 and the second treatment unit 2 are arranged in sequence.

[0053] An isolator 5 is provided between the first treatment unit 1 and the second treatment unit 2. When the liquid level of the first treatment unit 1 exceeds the isolator 5, the phenol-containing wastewater after primary treatment overflows to the second treatment unit 2. The isolator 5 can be used to separate the first treatment unit 1 and the second treatment unit 2, and the maximum water level of the first accommodating chamber 10 can be controlled. In addition, the isolator 5 can be used to ensure that in the initial stage, when the liquid level in the first accommodating chamber 10 has not reached the isolator 5, the gradually increasing phenol-containing wastewater can fully contact with the first treatment unit 1 in the first accommodating chamber 10 to achieve full filtration; the newly added phenol-containing wastewater will replace the phenol-containing wastewater filtered by the first treatment unit 1 from bottom to top, so that it can be transported to the second accommodating chamber 10 through the isolator 5. Among them, the height of the isolator 5 can be determined by comprehensive calculation based on various factors such as the water level and pressure of the incoming water, and the present application does not make a specific numerical limit here.

[0054] The first treatment unit 1 may include a first accommodating chamber 10, which is a cavity structure with one end open. The first accommodating chamber 10 may be in the form of a sink or a pool formed at a predetermined position. Of course, the specific shape and structure of the first accommodating chamber 10 are not specifically limited in this application. The volume of the first accommodating chamber 10 can be determined according to the amount of phenol-containing wastewater treated in a single treatment. Specifically, this application does not make any specific limitations here.

[0055] The first accommodating chamber 10 has an inlet 12 connected to the phenol-containing wastewater drainage pipe 4; the phenol-containing wastewater can enter the first accommodating chamber 10 through the drainage pipe and the inlet 12. A plurality of first purification units 100 for primary treatment of the phenol-containing wastewater are arranged in the first accommodating chamber 10. The plurality of first purification units 100 are arranged in the first accommodating chamber 10 at intervals.

[0056] In one embodiment, the first purification unit 100 may include a plurality of independent activated carbon adsorption units. The activated carbon adsorption units are used to first perform activated carbon adsorption on the phenol-containing wastewater, and the phenol removal efficiency can reach 75%.

[0057] Specifically, the number, size, setting form, and depth of efficient phenol-breaking bacteria of the activated carbon adsorption unit can be customized according to the amount of incoming water to meet the needs of different land conditions. Of course, in some other embodiments, the first purification unit 100 can also be in other forms that can achieve higher phenol removal efficiency. The filler content and quantity of the first purification unit 100 can be adjusted according to the water quality to meet the requirements of filtering sewage with different waste contents. In the embodiment of the present application, the first purification unit 100 is mainly illustrated by an activated carbon adsorption unit. The activated carbon adsorption unit may include a columnar shell. The shell is filled with an activated carbon medium. Specifically, the activated carbon medium may be in the form of a carbon rod or in the form of carbon particles. Of course, the specific form of the activated carbon medium is not specifically limited in this application. The surface of the shell is provided with an opening, and phenol-containing wastewater can enter the shell through the opening, thereby contacting the activated carbon medium, and removing phenol using the adsorption properties of the activated carbon medium.

[0058] In the embodiment of the present application, the first purification unit 100 is replaceably disposed in the first accommodating chamber 10. When the first purification unit 100 is replaceably disposed in the first accommodating chamber 10, the first purification unit 100 in the first accommodating chamber 10 can be matched with the current water flow. In addition, it is also convenient to replace or maintain the first purification unit 100 later.

[0059] In one embodiment, when the first purification unit 100 includes multiple independent activated carbon adsorption units, the top of the activated carbon adsorption unit can be provided with a lifting portion 101 for cooperating with a lifting structure, and the bottom of the first accommodating chamber 10 is provided with a slot for engaging with the bottom of the activated carbon adsorption unit.

[0060] When it is necessary to replace or increase or decrease the activated carbon adsorption unit, a hoisting device can be used to act on the hoisting part 101 to replace or increase or decrease the activated carbon adsorption unit. When it is necessary to install the activated carbon adsorption unit into the first accommodating chamber 10, the card slot provided at the bottom of the first accommodating chamber 10 can be used to limit the activated carbon adsorption unit, so as to facilitate the reliable, rapid and accurate installation of the activated carbon adsorption unit at the predetermined position of the first accommodating chamber 10. Specifically, the hoisting part 101 can be in the form of a hook. Of course, the hoisting part 101 can also be in other forms, and this application does not make specific limitations here.

[0061] In one embodiment, the first accommodating cavity 10 has a first opening end at the top, and a first cover 11 for sealing the first opening end is disposed on the first opening end, and the first cover 11 is movably disposed at the first opening end.

[0062] In this embodiment, a movable first cover 11 is provided at the first open end of the first accommodating chamber 10. When the activated carbon adsorption unit needs to be replaced or increased or decreased, the first cover 11 can be opened. After the replacement or increase or decrease of the activated carbon adsorption unit is completed, the first cover 11 can be closed. Specifically, the first cover 11 can be in the form of a push-pull cover plate, and the first cover 11 can also be in the form of other manual or electric opening methods. Specifically, the present application does not make specific limitations here.

[0063] The second treatment unit 2 may include a second accommodating chamber 20, which is a cavity structure with one end open. The second accommodating chamber 20 may be in the form of a water tank or a pool formed at a predetermined position. Of course, the specific shape and structure of the second accommodating chamber 20 are not specifically limited in this application. The volume of the second accommodating chamber 20 can be determined according to the amount of phenol-containing wastewater treated in a single treatment. Specifically, this application does not make any specific limitations here.

[0064] In one embodiment, the second purification unit 200 may include a plurality of independent phenol-breaking bacteria strain units, and the phenol-breaking bacteria strain units are used to accommodate phenol-breaking bacteria strains.

[0065] The second purification unit 200 further treats the phenol-containing wastewater by using domesticated high-efficiency phenol-destroying bacteria, and the phenol removal efficiency after treatment can reach 95-99%, meeting the direct discharge standard.

[0066] Furthermore, the second purification unit 200 may also include a filter layer 210 for filtering the scattered bacteria. In the direction of water flow, the filter layer 210 is located downstream of the phenol-breaking bacteria unit.

[0067] By setting a filter layer 210 downstream of the phenol-breaking bacteria unit, it is possible to prevent the escaped bacteria from entering the water body and polluting the water quality during the secondary treatment process. Specifically, the composition, structure and other parameters of the filter layer 210 can be adjusted and determined according to the pressure of the incoming water.

[0068] In one embodiment, the second accommodating cavity 20 has a second open end at the top, and a second cover 21 for sealing the second open end is disposed on the second open end, and the second cover 21 is movably disposed at the second open end.

[0069] In this embodiment, a movable second cover 21 is provided at the second open end of the second accommodating chamber 20, and the second cover 21 can be opened when the phenol-breaking bacteria unit needs to be replaced or increased or decreased. After the replacement or increase or decrease of the phenol-breaking bacteria unit is completed, the second cover 21 can be closed. Specifically, the second cover 21 can be in the form of a push-pull cover plate, and the second cover 21 can also be in the form of other manual or electric opening methods. Specifically, the present application does not make specific limitations here.

[0070] For example, in some scenarios, the depth of the original drainage network in the factory is about -4.00 meters relative to the elevation, so there is basically no need to install a booster pump 31.

[0071] For example, in some scenarios, if it is necessary to discharge into a pipe network whose relative elevation is higher than the buried depth of the water outlet of this equipment, it needs to be lifted before it can be introduced into the pipe network.

[0072] For the above-mentioned scenario where a lifting pump 31 needs to be set, the phenol-containing wastewater treatment device can also include: a water lifting area 3, which is located downstream of the second treatment unit 2 along the water flow direction, and the water lifting area 3 is provided with a lifting pump 31. When the lifting pump 31 is started, the phenol-containing wastewater treated by the second treatment unit 2 can be discharged to the outside.

[0073] Furthermore, a check valve and an electric butterfly valve are also provided at the outlet of the lift pump 31. When the lift pump 31 is started, the electric butterfly valve is restarted; when the lift pump 31 is shut down, the electric butterfly valve is also switched from an open state to a closed state.

[0074] The lifting pump 31 is specifically in the form of a water pump, and the outlet of the water pump is equipped with a micro-resistance slow-closing check valve and an electric butterfly valve. In addition, a manual butterfly valve for maintenance may also be provided.

[0075] When the liquid level in the lifting area reaches the set position, the signal is fed back to the water pump, the water pump starts, and then the electric butterfly valve opens, and the system automatically transports the treated water to the designated pipe network. When the liquid level in the lifting area drops to the set value, the water pump automatically shuts down, and then the electric butterfly valve closes to protect the equipment from cavitation due to low water level.

[0076] In some embodiments, the phenol-containing wastewater treatment device may further include: a control system 6, and a detection device for detecting parameters of the phenol-containing wastewater of the first treatment unit 1 and the second treatment unit 2. The detection device may include: a first detection element for detecting the water quality of the phenol-containing wastewater, a second detection element for detecting the water temperature of the phenol-containing wastewater, and a third detection element for detecting the liquid level of the phenol-containing wastewater.

[0077] In this embodiment, the first detection component is specifically a water quality detection unit that can detect water quality. The first detection component is used to detect the water quality of the phenol-containing wastewater treated by the first treatment unit 1, and it is determined whether the phenol removal efficiency of the phenol-containing wastewater currently treated by the first treatment unit 1 meets the predetermined requirements. If it does not meet the predetermined requirements, it can be fed back to the control system 6, and the control system 6 can adjust, replace or maintain the first treatment unit 1. The first detection component is used to detect the water quality of the phenol-containing wastewater treated by the second treatment unit 2, and it is determined whether the phenol removal efficiency of the phenol-containing wastewater currently treated by the second treatment unit 2 meets the predetermined requirements. If it does not meet the predetermined requirements, it can be fed back to the control system 6, and the control system 6 can adjust, replace or maintain the second treatment unit 2. The second detection component can be a temperature detection component, and the second detection component can be used to detect the water temperature of the phenol-containing wastewater; the third detection component can be a liquid level gauge, and the third detection component is used to detect the liquid level of the phenol-containing wastewater.

[0078] The phenol-containing wastewater treatment device can customize the control system 6 according to customer needs, which can monitor the water quality, water temperature, liquid level and other data in each area of ​​the equipment in real time, and monitor the operating status of the water pump and supporting valves, and provide real-time feedback to the mobile phone APP and the factory intelligent management and control center. It can also intelligently determine whether the packing of the treatment unit in each area needs to be replaced based on the above parameters, and prompt the operator online to replace it on time to ensure that the outflow water quality meets the standards.

[0079] The phenol-containing wastewater treatment device provided in the embodiment of the present application occupies a small area as a whole, and has a flexible installation location. It can effectively remove phenol in the wastewater by treating wastewater containing a small amount of phenol, and meet the direct discharge standard. In addition, it has a high degree of automation and low cost of use, which can save the investment, land occupation and related operation and management personnel of setting up a plant-wide phenol-containing wastewater treatment station. The phenol-containing wastewater treatment device can be unmanned and intelligently controlled, and has the advantages of occupying a small area, being customizable, and being able to adjust different sizes to meet the land use plans provided by different users.

[0080] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0081] The above-mentioned various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0082] The above are only a few embodiments of the present invention. Although the embodiments disclosed by the present invention are as above, the contents are only embodiments adopted for facilitating the understanding of the present invention and are not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modification and change in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection of the present invention shall still be subject to the scope defined by the attached claims.

Claims

1. A phenol-containing wastewater treatment device, It is characterized in that The phenol-containing wastewater treatment device comprises: a water treatment area, wherein the water treatment area comprises a first treatment unit and a second treatment unit, The first treatment unit comprises a first accommodating chamber, the first accommodating chamber has an inlet connected to a drainage pipe for phenol-containing wastewater; a plurality of first purification units for primary treatment of phenol-containing wastewater are arranged in the first accommodating chamber; the plurality of first purification units are arranged at intervals in the first accommodating chamber; the first purification unit is replaceably arranged in the first accommodating chamber; In the direction of water flow, the second treatment unit is located downstream of the first treatment unit, and the second treatment unit includes a second accommodating chamber, in which a second purification unit for performing secondary treatment on the phenol-containing wastewater is arranged, and the second purification unit is replaceably arranged in the second accommodating chamber; after the phenol-containing wastewater enters the first treatment unit from the inlet of the phenol-containing wastewater drainage pipe, it undergoes primary treatment in the first treatment unit and then enters the second treatment unit, and meets the direct discharge standard after secondary treatment in the second treatment unit.

2. The phenol-containing wastewater treatment device according to claim 1, It is characterized in that The first purification unit includes a plurality of independent activated carbon adsorption units.

3. The phenol-containing wastewater treatment device according to claim 2, It is characterized in that The top of the activated carbon adsorption unit is provided with a hoisting portion for cooperating with the hoisting structure, and the bottom of the first accommodating cavity is provided with a slot for engaging with the bottom of the activated carbon adsorption unit.

4. The phenol-containing wastewater treatment device according to claim 3, It is characterized in that The first accommodating cavity has a first opening end at the top, and a first cover body for blocking the first opening end is arranged on the first opening end, and the first cover body is movably arranged at the position of the first opening end.

5. The phenol-containing wastewater treatment device according to claim 1, It is characterized in that The second purification unit includes a plurality of independent phenol-breaking bacteria units, and the phenol-breaking bacteria units are used to accommodate phenol-breaking bacteria.

6. The phenol-containing wastewater treatment device according to claim 5, It is characterized in that The second purification unit also includes a filter layer for filtering the scattered bacteria. In the direction of water flow, the filter layer is located downstream of the phenol-breaking bacteria unit.

7. The phenol-containing wastewater treatment device according to claim 6, It is characterized in that The second accommodating cavity has a second opening end at the top, and a second cover body for blocking the second opening end is arranged on the second opening end, and the second cover body is movably arranged at the position of the second opening end.

8. The phenol-containing wastewater treatment device according to claim 1, It is characterized in that The phenol-containing wastewater treatment device also includes: a water lifting zone, which is located downstream of the second treatment unit along the water flow direction. The water lifting zone is provided with a lifting pump, and when the lifting pump is started, it can discharge the phenol-containing wastewater treated by the second treatment unit to the outside.

9. The phenol-containing wastewater treatment device according to claim 8, It is characterized in that The outlet of the lift pump is also provided with a check valve and an electric butterfly valve. When the lift pump is started, the electric butterfly valve is restarted; when the lift pump is shut down, the electric butterfly valve is also switched from an open state to a closed state.

10. The phenol-containing wastewater treatment device according to claim 1, It is characterized in that An isolation piece is provided between the first treatment unit and the second treatment unit. When the liquid level of the first treatment unit exceeds the isolation piece, the phenol-containing wastewater after primary treatment overflows to the second treatment unit.

11. The phenol-containing wastewater treatment device according to any one of claims 1 to 10, It is characterized in that The phenol-containing wastewater treatment device further includes: a control system, and detection equipment for detecting parameters of the phenol-containing wastewater of the first treatment unit and the second treatment unit.

12. The phenol-containing wastewater treatment device according to claim 11, It is characterized in that The detection equipment comprises: a first detection component for detecting the water quality of phenol-containing wastewater, a second detection component for detecting the water temperature of phenol-containing wastewater, and a third detection component for detecting the liquid level of phenol-containing wastewater.

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