A coking wastewater advanced treatment and water reuse system

Abstract

The application discloses a coking wastewater advanced treatment and reclaimed water recycling system, which comprises a main body, a second treatment structure is arranged in the main body, a first treatment structure is arranged on one side of the main body, and a third treatment structure is arranged on the other side of the main body. The first treatment structure, the second treatment structure and the third treatment structure are comprehensively used, the coking wastewater is filtered and adsorbed through the first treatment structure, macromolecular organic matters, oil substances and part of solid suspended matters and other pollutants in the coking wastewater are adsorbed, then the coking wastewater enters the main body, the coking wastewater is mixed with a coagulant through the second treatment structure, and sedimentation separation operation is carried out, so that the secondary treatment effect is achieved, finally, the coking wastewater is subjected to oxidation treatment through the third treatment structure, the multiple treatment is utilized, the advanced treatment of the coking wastewater is achieved, the treatment effect is good, and the reclaimed water recycling can be realized.

Description

Technical Field

[0001] This invention relates to the field of coking wastewater technology, and in particular to a deep treatment system for coking wastewater and a system for reclaimed water reuse. Background Technology

[0002] Coking wastewater mainly originates from the production and processing of steel enterprises. Its composition is complex, containing a large amount of recalcitrant organic matter such as aromatics and heterocyclic compounds, as well as inorganic pollutants such as ammonia nitrogen, cyanide, and sulfides, posing a serious threat to water environmental safety. Furthermore, coking wastewater is persistent in degradation and carcinogenic. In recent years, with the technological upgrading of domestic steel enterprises and the increasing awareness of energy conservation and environmental protection, a large amount of coking wastewater has been generated. To achieve zero discharge of coking wastewater, most enterprises choose to add advanced treatment after secondary treatment to meet standards for reuse. Commonly used advanced treatment technologies include adsorption technology, advanced oxidation technology, and biological treatment methods. However, in actual industrial applications, some methods have poor implementation results and have a certain impact on water quality. Summary of the Invention

[0003] The present invention aims to provide a system capable of deep treatment of coking wastewater and enabling the reuse of recycled water.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a deep treatment and reclaimed water reuse system for coking wastewater, comprising a main body, a second treatment structure installed inside the main body, a first treatment structure installed on one side of the main body, and a third treatment structure installed on the other side of the main body, characterized in that:

[0005] The second processing structure includes a first driving component, a rotating shaft, several blades, two second driving components, two screws, a lifting assembly, and a feed inlet;

[0006] The first driving component is installed on the top of the main body. The driving end of the first driving component passes through the top of the main body and is connected to the top of the rotating shaft. The bottom of the rotating shaft is connected to the inner wall of the bottom of the main body through a bearing. Several blades are welded to the rotating shaft. Two second driving components are respectively installed on both sides of the top of the main body. The driving ends of the two second driving components pass through the top wall of the main body and are connected to the top of the two screws. The bottoms of the two screws are connected to the inner wall of the bottom of the main body through a bearing. The lifting assembly is threadedly connected to the two screws on both sides. The feed port is located on one side of the main body.

[0007] The lifting assembly includes a lifting plate, a filter screen, a cross-shaped through hole, and several movable doors. The two sides of the lifting plate are respectively threadedly connected to the two screws. The filter screen is embedded in the top of the lifting plate. The cross-shaped through hole is opened in the top of the lifting plate. The several movable doors are rotatably connected to the inner wall of the cross-shaped through hole by hinges, and the position of the cross-shaped through hole corresponds to the stopping position after the blades are stirred.

[0008] Preferably, the first processing structure includes an adsorption chamber, a top cover, a limiting block, two snap-fit ​​components, two first adsorption layers, a separation chamber, two second adsorption layers, a delivery pipe, a water storage tank, a water pump, and a connecting pipe.

[0009] The adsorption chamber is installed on one side of the main body, the top cover is connected to the top of the adsorption chamber, the limiting block is installed at the bottom of the top cover, the two snap-fit ​​components are respectively installed on both sides of the bottom of the limiting block, the separation chamber is located inside the lower side of the adsorption layer, the tops of the two first adsorption layers are inserted into the two snap-fit ​​components, the bottoms of the two first adsorption layers are inserted into the top of the separation chamber, the two second adsorption layers are inserted into both sides of the separation chamber, one end of the delivery pipe is connected to the separation chamber, and the other end is connected to the inside of the main body, the water storage tank is located on one side of the main body, the water pump is located on the top of the water storage tank, and the adsorption chamber and the water storage tank are connected by a connecting pipe for backwashing the adsorption chamber by drawing water from the water storage tank.

[0010] Preferably, the snap-fit ​​assembly includes a rectangular groove, two springs, a snap-fit ​​base, and an insert block; the rectangular groove is formed at the bottom of the limiting block, one end of each of the two springs is connected to the inner wall of the rectangular groove, and the other end is connected to the top of the snap-fit ​​base; the insert block is installed on the top of the first adsorption layer, and the insert block is inserted into the bottom of the snap-fit ​​base.

[0011] Preferably, the third processing structure includes a delivery pump, a catalytic chamber, a baffle plate, a gas distribution plate, several inclined plates, several fixed frames, several catalytic layers, and an exhaust port;

[0012] One end of the delivery pump is connected to the main body, the catalytic chamber is installed on the other side of the main body, the partition is installed inside the catalytic chamber, the gas distribution plate is installed on the lower side inside the catalytic chamber, a number of inclined plates are welded to the inner wall of the catalytic chamber or to one side of the partition, arranged alternately on the left and right with the suspended ends of the inclined plates facing downwards, the gas distribution plate and the inclined plates are respectively located on both sides of the partition, a number of fixing frames are installed on the top of the number of inclined plates, a number of catalytic layers are embedded inside the number of fixing frames, and the discharge port is installed on one side of the catalytic chamber.

[0013] Preferably, the top of the top cover is provided with a liquid inlet, and the liquid inlet is threadedly connected with a sealing plug.

[0014] Preferably, some of the blades are arranged in a cross shape.

[0015] Preferably, the front end of the adsorption chamber is provided with a sampling tube connected to it, and the other end of the sampling tube is connected to a sampling container.

[0016] Preferably, both the main body and the front end of the catalyst chamber are provided with a detachable sealing plate.

[0017] Preferably, the catalyst layer is a particulate catalyst, a honeycomb ceramic catalyst, or an iron hydroxyl oxide catalyst.

[0018] The beneficial effects of this invention are as follows: By comprehensively employing a first treatment structure, a second treatment structure, and a third treatment structure, the first treatment structure filters and adsorbs coking wastewater, adsorbing pollutants such as macromolecular organic matter, oily substances, and some suspended solids in the coking wastewater. Subsequently, the coking wastewater enters the main body and is mixed with coagulant through the second treatment structure, and then undergoes sedimentation and separation, thereby achieving a secondary treatment effect. Finally, the third treatment structure oxidizes the coking wastewater. By utilizing multiple treatments, the deep treatment of coking wastewater is achieved, resulting in good treatment effect and enabling the reuse of reclaimed water. Attached Figure Description

[0019] Figure 1 This is a front sectional view of the present invention.

[0020] Figure 2 This is a schematic diagram of the main structure of the present invention.

[0021] Figure 3 This is a top view of the lifting plate structure of the present invention.

[0022] Figure 4 This is a schematic cross-sectional view of the adsorption chamber of the present invention.

[0023] Figure 5 for Figure 1 Enlarged view of point A.

[0024] Figure 6 for Figure 4 Enlarged view of point B.

[0025] In the diagram: 1. Main body, 2. First driving component, 3. Rotating shaft, 4. Paddle, 5. Second driving component, 6. Screw, 7. Feed inlet, 8. Water storage tank, 9. Water pump, 10. Connecting pipe, 11. Lifting plate, 12. Filter screen, 13. Cross-shaped through hole, 14. Movable door, 15. Adsorption chamber, 16. Top cover, 17. Limiting block, 18. First adsorption layer, 19. Separation chamber, 20. Second adsorption layer, 21. Conveying pipe, 22. Rectangular groove, 23. Spring, 24. Snap-fit ​​seat, 25. Insert block, 26. Conveying pump, 27. Catalytic chamber, 28. Partition plate, 29. Gas distribution plate, 30. Inclined plate, 31. Fixing frame, 32. Catalytic layer, 33. Discharge port, 34. Liquid inlet, 35. Sealing plug, 36. Control valve, 37. Sampling pipe, 38. Sampling container, 39. Removable sealing plate. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-6 As shown, a coking wastewater deep treatment and reclaimed water reuse system includes a main body 1, a second treatment structure installed inside the main body 1, a first treatment structure installed on one side of the main body 1, and a third treatment structure installed on the other side of the main body 1.

[0027] The second processing structure mainly consists of a first driving component 2, a rotating shaft 3, several blades 4, two second driving components 5, two screws 6, a lifting assembly, and a feed inlet 7.

[0028] The first drive component 2 is installed on the top of the main body 1. The drive end of the first drive component 2 passes through the top of the main body 1 and connects to the top of the rotating shaft 3. The bottom of the rotating shaft 3 is connected to the inner wall of the bottom of the main body 1 through a bearing. Several blades 4 are welded to the rotating shaft 3. Two second drive components 5 are respectively installed on both sides of the top of the main body 1. The drive ends of the two second drive components 5 pass through the top wall of the main body 1 and connect to the top of the two screws 6. The bottoms of the two screws 6 are connected to the inner wall of the bottom of the main body 1 through bearings. The lifting assembly is threaded to the two screws 6 on both sides. The feed port 7 is located on one side of the main body 1.

[0029] The lifting assembly mainly consists of a lifting plate 11, a filter screen 12, a cross-shaped through-hole 13, and several movable doors 14. The lifting plate 11 is threadedly connected to two screws 6 on both sides. The filter screen 12 is embedded in the top of the lifting plate 11. The cross-shaped through-hole 13 is located on the top of the lifting plate 11. Several movable doors 14 are rotatably connected to the inner wall of the cross-shaped through-hole 13 via hinges, and the position of the cross-shaped through-hole corresponds to the stopping position of the paddles after stirring. It should be noted that after the coking wastewater is adsorbed by the first treatment structure, it enters the main body 1. Then, coagulant is added into the main body 1 through the feed inlet 7. At this time, the first drive component 2 is controlled to operate. The first drive component 2 uses a servo motor, consisting of a motor, encoder, and controller, which drives several paddles 4 to rotate slowly through the rotating shaft 3. The stopping position of the paddles 4 is controllable. The rotation of the paddles 4 allows the coking wastewater and coagulant inside the main body 1 to mix thoroughly. The charged substances in the wastewater neutralize with the coagulant, forming large particle clumps. At this time, two second drive components 5 operate, which can drive the paddles 4 to rotate slowly through the two screws 6. The lifting plate 11 rises, which in turn causes the large particles formed by neutralization to rise and be separated from the wastewater by the filter screen. The position of the cross-shaped through hole 13 corresponds to the position of the paddle 4, so that the paddle 4 will not obstruct the lifting plate 11 during the lifting process. The movable door 14 is opened in advance before the lifting plate 11 rises, so that the paddle 4 can pass smoothly through the cross-shaped through hole 13. During the stirring process of the paddle 4, the movable door 14 is closed to prevent the wastewater that has not been separated by the filter screen from passing through. After the lifting plate 11 is raised, the operator can remove the detachable sealing plate 39 at the front end of the main body 1 and clean up the large particles.

[0030] The first processing structure mainly consists of an adsorption chamber 15, a top cover 16, a limiting block 17, two snap-fit ​​components, two first adsorption layers 18, a separation chamber 19, two second adsorption layers 20, a delivery pipe 21, a water storage tank 8, a water pump 9, and a connecting pipe 10.

[0031] The adsorption chamber 15 is installed on one side of the main body 1. The top cover 16 is connected to the top of the adsorption chamber 15. The limiting block 17 is installed at the bottom of the top cover 16. Two snap-fit ​​components are respectively installed on both sides of the bottom of the limiting block 17. The separation chamber 19 is located inside the lower side of the adsorption layer. The tops of the two first adsorption layers 18 are inserted into the two snap-fit ​​components, and the bottoms of the two first adsorption layers 18 are inserted into the top of the separation chamber 19. The two second adsorption layers 20 are inserted into both sides of the separation chamber 19. One end of the conveying pipe 21 is connected to the separation chamber 19, and the other end is connected to the inside of the main body 1. The flow direction of coking wastewater entering the adsorption chamber 15 is as follows: Figure 4 As indicated by the middle arrow.

[0032] A water storage tank 8 is located on one side of the main body 1, and a water pump 9 is located on top of the water storage tank 8. The adsorption tank and the water storage tank are connected by a connecting pipe, which is used to draw water from the water storage tank to backwash the adsorption tank. An inlet 34 is located at the center of the top of the adsorption tank 15, and a sealing plug 35 is provided. A control valve 36 is provided on the connecting pipe 10.

[0033] During use, the sealing plug 35 is first separated from the inlet, and the top cover 16 is separated from the top of the adsorption chamber 15. Then, the coking wastewater is poured into the adsorption chamber 15 through the inlet 34. The two first adsorption layers 18 and the two second adsorption layers 20 work together to adsorb pollutants such as macromolecular organic matter, oily substances and some suspended solids in the coking wastewater. The adsorbed coking wastewater enters the main body 1 through the separation chamber 19 and the conveying pipe 21 for subsequent sedimentation. After the operation is completed, the water pump 9 can be controlled to pump water from the water storage tank 8 and backwash the two first adsorption layers 18 and the two second adsorption layers 20. The first adsorption layer 18 is inserted into the limiting block 17 through the snap-fit ​​component. After long-term operation, the operator can remove the top cover 16 and replace the two first adsorption layers 18 and the two second adsorption layers 20. At the same time, the operator can sample the coking wastewater through the sampling tube 37 and the sampling container 38.

[0034] Two first adsorption layers 18 are disposed on the upper part of the adsorption chamber 15, two second adsorption layers 20, separation chamber 19, and two

[0035] The two snap-fit ​​components have the same structure. Each snap-fit ​​component mainly consists of a rectangular groove 22, two springs 23, a snap-fit ​​base 24, and a plug 25.

[0036] A rectangular groove 22 is formed at the bottom of the limiting block 17. One end of two springs 23 is connected to the inner wall of the rectangular groove 22, and the other end is connected to the top of the snap-fit ​​seat. The insert 25 is installed on the top of the first adsorption layer 18 and is inserted into the bottom of the snap-fit ​​seat.

[0037] During use, when the top cover 16 is connected to the adsorption chamber 15, the insert 25 located in the first adsorption layer 18 is inserted into the bottom of the snap-fit ​​seat 24, and the two springs 23 are compressed. The reaction force generated by the two springs 23 can increase the stability of the insertion of the insert 25 and the snap-fit ​​seat 24.

[0038] The third treatment structure mainly consists of a transfer pump 26, a catalytic chamber 27, a baffle 28, a gas distribution plate 29, several inclined plates 30, several fixed frames 31, several catalytic layers 32, and an exhaust port 33.

[0039] One end of the delivery pump 26 is connected to the main body 1. The catalytic chamber 27 is installed on the other side of the main body 1. The baffle 28 is installed inside the catalytic chamber 27. The gas distribution plate 29 is installed on the lower side inside the catalytic chamber 27. One end of several inclined plates 30 is welded to the inner wall of the catalytic chamber 27 or to one side of the baffle 28. They are arranged alternately on the left and right sides with the suspended ends of the inclined plates facing down. The gas distribution plate and the inclined plates are located on both sides of the baffle. Several fixing frames 31 are installed on the top of several inclined plates 30. Several catalytic layers 32 are embedded inside several fixing frames 31. The discharge port 33 is installed on one side of the catalytic chamber 27.

[0040] The catalyst layer 32 includes a particulate catalyst, a honeycomb ceramic catalyst, and an iron hydroxyl oxide catalyst. During operation, the delivery pump 26 introduces coking wastewater into the catalyst chamber 27, and the gas distribution plate 29 introduces ozone into the coking wastewater. Subsequently, the coking wastewater undergoes an oxidation reaction with the catalyst layer 32 and is finally discharged through the discharge port 33, thereby achieving the purpose of deep treatment of the coking wastewater.

[0041] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A deep treatment and reclaimed water reuse system for coking wastewater, comprising a main body, a second treatment structure installed inside the main body, a first treatment structure installed on one side of the main body, and a third treatment structure installed on the other side of the main body, characterized in that: The first processing structure includes an adsorption chamber, a top cover, a limiting block, two snap-fit ​​components, two first adsorption layers, a separation chamber, two second adsorption layers, a delivery pipe, a water storage tank, a water pump, and a connecting pipe. The adsorption chamber is installed on one side of the main body, the top cover is connected to the top of the adsorption chamber, the limiting block is installed at the bottom of the top cover, the two snap-fit ​​components are respectively installed on both sides of the bottom of the limiting block, the separation chamber is located inside the lower side of the adsorption layer, the tops of the two first adsorption layers are inserted into the two snap-fit ​​components, the bottoms of the two first adsorption layers are inserted into the top of the separation chamber, the two second adsorption layers are inserted into both sides of the separation chamber, one end of the conveying pipe is connected to the separation chamber, and the other end is connected to the inside of the main body, the water storage tank is located on one side of the main body, the water pump is located on the top of the water storage tank, and the adsorption chamber and the water storage tank are connected by a connecting pipe for backwashing the adsorption chamber by drawing water from the water storage tank; The second processing structure includes a first driving component, a rotating shaft, several blades, two second driving components, two screws, a lifting assembly, and a feed inlet; The third processing structure includes a delivery pump, a catalytic chamber, a partition, a gas distribution plate, several inclined plates, several fixed frames, several catalytic layers, and an exhaust port. One end of the delivery pump is connected to the main body. The catalytic chamber is installed on the other side of the main body. The partition is installed inside the catalytic chamber. The gas distribution plate is installed on the lower side inside the catalytic chamber. Several inclined plates are welded to the inner wall of the catalytic chamber or to one side of the partition, arranged alternately on the left and right with the suspended ends of the inclined plates facing downwards. The gas distribution plate and the inclined plates are located on both sides of the partition. Several fixed frames are installed on the top of several inclined plates. Several catalytic layers are embedded inside several fixed frames. The exhaust port is installed on one side of the catalytic chamber. The first driving component is installed on the top of the main body. The driving end of the first driving component passes through the top of the main body and is connected to the top of the rotating shaft. The bottom of the rotating shaft is connected to the inner wall of the bottom of the main body through a bearing. Several blades are welded to the rotating shaft. Two second driving components are respectively installed on both sides of the top of the main body. The driving ends of the two second driving components pass through the top wall of the main body and are connected to the top of the two screws. The bottoms of the two screws are connected to the inner wall of the bottom of the main body through a bearing. The lifting assembly is threadedly connected to the two screws on both sides. The feed port is located on one side of the main body. The lifting assembly includes a lifting plate, a filter screen, a cross-shaped through hole, and several movable doors. The two sides of the lifting plate are respectively threadedly connected to the two screws. The filter screen is embedded in the top of the lifting plate. The cross-shaped through hole is opened in the top of the lifting plate. The several movable doors are rotatably connected to the inner wall of the cross-shaped through hole by hinges, and the position of the cross-shaped through hole corresponds to the stopping position after the blades are stirred.

2. The coking wastewater deep treatment and reclaimed water reuse system according to claim 1, characterized in that, The snap-fit ​​assembly includes a rectangular groove, two springs, a snap-fit ​​base, and an insert block; the rectangular groove is formed at the bottom of the limiting block, one end of each of the two springs is connected to the inner wall of the rectangular groove, and the other end is connected to the top of the snap-fit ​​base; the insert block is installed on the top of the first adsorption layer and is inserted into the bottom of the snap-fit ​​base.

3. The coking wastewater deep treatment and reclaimed water reuse system according to claim 1, characterized in that, The top of the cover is provided with a liquid inlet, and the liquid inlet is threadedly connected with a sealing plug.

4. The coking wastewater deep treatment and reclaimed water reuse system according to claim 1, characterized in that, Several of the blades are arranged in a cross shape.

5. The coking wastewater deep treatment and reclaimed water reuse system according to claim 1, characterized in that, The front end of the adsorption chamber is equipped with a sampling tube, and the other end of the sampling tube is connected to a sampling container.

6. The coking wastewater deep treatment and reclaimed water reuse system according to claim 1, characterized in that, Both the main body and the front end of the catalytic chamber are equipped with removable sealing plates.

7. The coking wastewater deep treatment and reclaimed water reuse system according to claim 1, characterized in that, The catalyst layer is a particulate catalyst, a honeycomb ceramic catalyst, or an iron hydroxyl oxide catalyst.

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