Salt separation purification and resourceful treatment device for high-salinity wastewater in coal chemical industry

Abstract

The utility model discloses a coal chemical industry high salinity wastewater salt separation purification and resourceful treatment device, which comprises a base, a group of support columns are fixedly arranged on the left part and the right side of the upper end of the base, the two groups of support columns are distributed in bilateral symmetry, each group comprises two support columns, and a filter box is fixedly arranged at the upper ends of the two groups of support columns. According to the salt separation purification and resourceful treatment device for the high-salt wastewater in the coal chemical industry disclosed by the utility model, the filter box is arranged, so that the filter plate is conveniently detached from the filter box, and the filter plate is convenient to clean; by arranging a mixing assembly, when filtered wastewater is discharged into a mixing barrel through a discharging frame and an additive is injected into the mixing barrel from an injection pipe, a rotating column is driven by a motor, then the rotating column drives a connecting disc, a plurality of mixing plates are driven to rotate through the connecting disc, and under the rotating stirring of the mixing plates, the additive is discharged into the mixing barrel through the discharging frame. The additive and the filtered wastewater can be more uniformly mixed, so that the harm of the wastewater can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to a device for salt purification and resource processing of high-salt wastewater in coal chemical industry. Background Art

[0002] In modern coal gasification technology, coal chemical wastewater is one of the most difficult high-concentration wastewaters to treat. This high-concentration wastewater mainly includes acidic organic wastewater and other high-concentration wastewater, especially high-salt wastewater. The wastewater has high water temperature, many suspended solids, high salt content, high hardness and contains a certain amount of organic matter such as glycerol and medium and low carbon chains. Its composition is complex and highly toxic to biochemical bacteria. Moreover, due to its strong inhibitory effect on microbial growth, the wastewater treatment technology is much more difficult than ordinary sewage treatment. After phenol-ammonia recovery, this type of wastewater still has the characteristics of oil, high ammonia nitrogen, high phenol, high COD, complex pollution components, poor biodegradability, and high biological toxicity. The existing methods for treating coal chemical wastewater mainly include oil separation sedimentation tanks, pretreatment such as flotation, hydrolysis acidification, anaerobic and aerobic biochemical treatment methods, and advanced oxidation deep treatment methods such as ozone and electrocatalysis. At the same time, the coal chemical industry is mostly located in water-scarce areas such as Northwest China. In order to effectively protect the water resources environment in the Northwest, the concept of zero discharge of coal chemical wastewater has received widespread attention. Since 2004, dozens of zero-discharge projects have been built and operated in China. In the practice of zero-discharge treatment projects for coal chemical wastewater that have been put into operation, the biochemical treatment, reuse treatment, and membrane concentration process of gasification wastewater have become relatively mature and stable.

[0003] The prior art (patent number: CN215403606U) discloses a coal chemical high-salt wastewater desalination purification and resource processing system, including a pretreatment system, a multi-stage concentration treatment system, an MVR evaporation unit, a salt production unit, a CWAO device and a chelating resin device. The pretreatment system can remove calcium and magnesium ions and free silicon in the wastewater and obtain pretreated wastewater. The liquid inlet end of the multi-stage concentration treatment system is connected to the wastewater outlet end of the pretreatment system through a pipeline. The multi-stage concentration treatment system can perform multi-stage treatment on the pretreated wastewater and obtain clean water, salt-containing permeate containing multiple waste salt components, concentrated liquid containing multiple pollutants, and a salt solution mainly composed of sodium sulfate generated by special membrane separation treatment. The multi-stage concentration treatment system is connected with a clean water delivery pipeline, a salt-containing permeate delivery pipeline, a system concentrated liquid delivery pipeline and a salt solution delivery pipeline. The MVR evaporation unit includes a first MVR evaporation device I and The second MVR evaporation device II, the liquid inlet end of the first MVR evaporation device I is connected to the salt-containing permeate delivery pipeline, and the liquid outlet end of the first MVR evaporation device I is connected to the liquid inlet end of the salt production unit through a pipeline, and the liquid inlet end of the second MVR evaporation device II is connected to the salt solution delivery pipeline and can evaporate and crystallize the salt solution to obtain a saturated sodium sulfate solution, the salt production unit can obtain sodium chloride and waste salt containing potassium nitrate, sodium nitrate and sodium sulfate from the mother liquor generated by the first MVR evaporation device I, and the liquid outlet end of the salt production unit is connected to a mother liquor delivery pipeline, the liquid inlet end of the CWAO device is connected to the system concentrated liquid delivery pipeline and the mother liquor delivery pipeline, the CWAO device can remove toxic and harmful substances in the wastewater, and the clear liquid outlet end of the CWAO device is connected to the liquid inlet end of the chelating resin device, and the chelating resin device can further remove heavy metals in the sewage for subsequent treatment. The beneficial effects of the utility model are as follows: by setting up a pretreatment system, a multi-stage concentration treatment system, an MVR evaporation unit, a salt production unit, a CWAO device and a chelating resin device, efficient and environmentally friendly treatment of the mother liquor generated after salting of high-salt wastewater from coal chemical industry and the concentrated liquid after membrane is achieved, and the multi-stage concentration treatment system is used to achieve multiple steps and repeated reflux biochemical treatment of sewage, so that the pollutants in the wastewater can be fully treated and adsorbed, and deep treatment such as salt separation and desalination can be carried out to achieve reliable purification and achieve environmental protection purposes. By setting up a salt production unit, the resource utilization of the crystallized salt in the mother liquor is achieved, ensuring the recycling of resources, reducing waste and improving economic benefits; at the same time, the RO unit and the DTRO treatment unit can efficiently treat wastewater and have the advantage of stable effluent effect, ensuring that the wastewater can be stably discharged in compliance with standards.

[0004] The existing coal chemical high-salt wastewater desalination purification and resource treatment equipment has the following disadvantages: since the existing equipment is not convenient for disassembly and cleaning of the filtering equipment, the filtering effect of the wastewater is affected, and the mixing effect of the filtered wastewater and additives is general. Therefore, we propose a new type of coal chemical high-salt wastewater desalination purification and resource treatment equipment. Utility Model Content

[0005] The main purpose of the utility model is to provide a coal chemical high-salt wastewater desalination purification and resource processing device, which can effectively solve the problem of easy disassembly and cleaning of filtering equipment, and at the same time achieve a more uniform mixing effect of additives and wastewater.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A device for desalination, purification and resource recovery of high-salt wastewater from coal chemical industry, comprising a base, a group of support columns are fixedly installed on the left and right sides of the upper end of the base, the two groups of support columns are symmetrically distributed and each group is provided with two, a filter box is fixedly installed on the upper ends of the two groups of support columns, a discharge rack is fixedly installed on the lower right end of the filter box, a mixing barrel is fixedly installed on the right side of the upper end of the base, a cover plate is clamped on the upper end of the mixing barrel, a mixing assembly is fixedly installed on the upper end of the cover plate, and a discharge pipe is fixedly installed and inserted on the right side of the outer cylindrical surface of the mixing barrel.

[0008] Preferably, fixed blocks are fixedly connected on the left and right sides of the inside of the filter box, and slots are provided on the left and right sides between the two fixed blocks. Blocks are clamped in the two slots, and a filter plate is fixedly connected between the two blocks. A mounting slot that passes through left and right is provided at the lower right end of the filter box.

[0009] Preferably, the two clamping blocks and the two fixing blocks are symmetrically distributed, and the clamping blocks are arranged as a trapezoidal block structure.

[0010] Preferably, baffles are fixedly connected to the front and rear upper ends of the discharge rack, and the discharge rack is fixedly connected in the mounting groove and is located below the two fixing blocks.

[0011] Preferably, the mixing assembly includes a motor, the output end of the motor passes through the cover plate and is fixedly connected to a rotating column, the upper side and the lower side of the outer surface of the rotating column are fixedly sleeved with connecting plates, the outer surfaces of the two connecting plates are fixedly connected to a plurality of mixing plates, a connecting groove that passes through the left and right sides is opened on the right side of the outer cylindrical surface of the mixing barrel, an injection pipe is fixedly inserted and connected to the right part of the upper end of the cover plate, and the motor is fixedly connected to the upper end of the cover plate.

[0012] Preferably, the plurality of mixing plates are distributed in a ring array, and the discharge pipe is fixedly connected in the connecting groove.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, by setting a filter box, the filter plate is easy to disassemble and clean. When in use, when wastewater needs to be treated, the impurities in the wastewater are first filtered through the filter plate. When the filter plate needs to be cleaned, the card block is first separated from the card slot, and the filter plate is easily disassembled from the filter box under the drive of the card block, so that the filter plate is easy to clean;

[0015] 2. In the utility model, a mixing assembly is provided to facilitate mixing of the filtered wastewater and the additive. When in use, the filtered wastewater is discharged into the mixing barrel through the discharge rack, and the additive is injected into the mixing barrel from the injection pipe. The motor drives the rotating column, and then the rotating column drives the connecting plate, and the connecting plate drives multiple mixing plates to rotate. Under the rotation and stirring of the mixing plate, the additive and the filtered wastewater can be mixed more evenly, so that the harm of the wastewater can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a device for desalination, purification and resource utilization of high-salt wastewater from coal chemical industry according to the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of a filter box of a coal chemical high-salt wastewater desalination and resource processing device of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of a discharge frame of a coal chemical high-salt wastewater desalination purification and resource processing device of the utility model;

[0019] Figure 4 This is a schematic diagram of the overall structure of a mixing component of a coal chemical high-salt wastewater desalination purification and resource processing device of the utility model.

[0020] In the figure: 1. base; 2. support column; 3. filter box; 4. discharge rack; 5. mixing barrel; 6. discharge pipe; 7. cover plate; 8. mixing assembly; 31. mounting slot; 32. fixing block; 33. slot; 34. block; 35. filter plate; 41. baffle; 51. connecting slot; 52. injection pipe; 81. motor; 82. rotating column; 83. connecting disk; 84. mixing plate. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-4 As shown, a coal chemical high-salt wastewater desalination purification and resource processing device includes a base 1, a group of support columns 2 are fixedly installed on the left and right sides of the upper end of the base 1, the two groups of support columns 2 are symmetrically distributed and each group is provided with two, a filter box 3 is commonly fixedly installed on the upper ends of the two groups of support columns 2, a discharge rack 4 is fixedly installed on the lower right end of the filter box 3, a mixing barrel 5 is fixedly installed on the right side of the upper end of the base 1, a cover plate 7 is clamped on the upper end of the mixing barrel 5, a mixing component 8 is fixedly installed on the upper end of the cover plate 7, and a discharge pipe 6 is fixedly installed and inserted on the right side of the outer cylindrical surface of the mixing barrel 5.

[0025] A fixing block 32 is fixedly connected to the left and right sides of the filter box 3, a slot 33 is provided on the left and right sides between the two fixing blocks 32, a block 34 is clamped in the two slots 33, a filter plate 35 is fixedly connected between the two blocks 34, and a mounting slot 31 passing through left and right is provided at the lower right end of the filter box 3; the two blocks 34 and the two fixing blocks 32 are symmetrically distributed, and the blocks 34 are set as a trapezoidal block structure; a baffle 41 is fixedly connected to the front and rear ends of the upper ends of the discharge rack 4, and the discharge rack 4 is fixedly connected in the mounting slot 31 and is located below the two fixing blocks 32; when the wastewater needs to be treated, the impurities in the wastewater are first filtered through the filter plate 35, and when the filter plate 35 needs to be cleaned, the block 34 is first separated from the slot 33, and driven by the block 34, the filter plate 35 is easy to be disassembled from the filter box 3, so that the filter plate 35 is easy to clean.

[0026] The mixing assembly 8 includes a motor 81, the output end of the motor 81 passes through the cover plate 7 and is fixedly connected to a rotating column 82, the upper and lower sides of the outer surface of the rotating column 82 are fixedly sleeved with a connecting disk 83, and the outer surfaces of the two connecting disks 83 are fixedly connected to multiple mixing plates 84. The right side of the outer cylindrical surface of the mixing barrel 5 is provided with a connecting groove 51 that passes through left and right, and the right part of the upper end of the cover plate 7 is fixedly inserted and connected with an injection pipe 52, and the motor 81 is fixedly connected to the upper end of the cover plate 7; multiple mixing plates 84 are distributed in a ring array, and the discharge pipe 6 is fixedly connected to the connection groove 51; when the filtered wastewater is discharged into the mixing barrel 5 through the discharge frame 4, and the additive is injected into the mixing barrel 5 from the injection pipe 52, the rotating column 82 is driven by the motor 81, and then the connecting disk 83 is driven by the rotating column 82, and the multiple mixing plates 84 are driven to rotate through the connecting disk 83, and under the rotation and stirring of the mixing plates 84, the additives and the filtered wastewater can be mixed more evenly, so that the harm of the wastewater can be reduced.

[0027] It should be noted that the utility model is a coal chemical high-salt wastewater desalination purification and resource processing device. By setting a filter box 3, the filter plate 35 is easy to disassemble and clean. When in use, when the wastewater needs to be treated, the impurities in the wastewater are first filtered through the filter plate 35. When the filter plate 35 needs to be cleaned, the block 34 is first separated from the card slot 33, and the filter plate 35 is easy to be disassembled from the filter box 3 under the drive of the block 34, so that the filter plate 35 is easy to clean; by setting a mixing component 8, the filtered wastewater and the additive are easy to mix. When in use, when the filtered wastewater is discharged into the mixing barrel 5 through the discharge rack 4, the additive is injected into the mixing barrel 5 from the injection pipe 52, the rotating column 82 is driven by the motor 81, and the connecting plate 83 is driven by the rotating column 82. The connecting plate 83 drives multiple mixing plates 84 to rotate, and under the rotation and stirring of the mixing plate 84, the additive and the filtered wastewater can be mixed more evenly, so that the harm of the wastewater can be reduced.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A coal chemical high-salt wastewater desalination and resource processing device, comprising a base (1), characterized in that: A group of support columns (2) are fixedly mounted on the left and right sides of the upper end of the base (1); the two groups of support columns (2) are symmetrically distributed on the left and right sides and each group is provided with two columns; a filter box (3) is fixedly mounted on the upper ends of the two groups of support columns (2); a discharge rack (4) is fixedly mounted on the lower right end of the filter box (3); a mixing barrel (5) is fixedly mounted on the right side of the upper end of the base (1); a cover plate (7) is clamped on the upper end of the mixing barrel (5); a mixing assembly (8) is fixedly mounted on the upper end of the cover plate (7); and a discharge pipe (6) is fixedly inserted and mounted on the right side of the outer cylindrical surface of the mixing barrel (5).

2. A coal chemical high-salt wastewater desalination and resource processing device according to claim 1, characterized in that: The filter box (3) is fixedly connected to a fixed block (32) on the left and right sides thereof, a slot (33) is provided between the two fixed blocks (32) on the left and right sides thereof, a slot (34) is clamped in each of the two slots (33), a filter plate (35) is fixedly connected between the two slots (34), and a mounting slot (31) is provided at the lower right end of the filter box (3) to pass through the left and right sides thereof.

3. A coal chemical high-salt wastewater desalination and resource processing device according to claim 2, characterized in that: The two clamping blocks (34) and the two fixing blocks (32) are distributed symmetrically on the left and right, and the clamping block (34) is configured as a trapezoidal block structure.

4. A coal chemical high-salt wastewater desalination and resource processing device according to claim 3, characterized in that: The upper front part and the upper rear part of the discharge rack (4) are both fixedly connected with baffles (41); the discharge rack (4) is fixedly connected in the mounting groove (31) and is located below the two fixing blocks (32).

5. A coal chemical high-salt wastewater desalination and resource processing device according to claim 4, characterized in that: The mixing assembly (8) comprises a motor (81), the output end of the motor (81) passes through the cover plate (7) and is fixedly connected to a rotating column (82), the upper side and the lower side of the outer surface of the rotating column (82) are both fixedly sleeved with connecting plates (83), and the outer surfaces of the two connecting plates (83) are both fixedly connected to a plurality of mixing plates (84), the right side of the outer cylindrical surface of the mixing barrel (5) is provided with a connecting groove (51) passing through left and right, the right part of the upper end of the cover plate (7) is fixedly inserted and connected with an injection pipe (52), and the motor (81) is fixedly connected to the upper end of the cover plate (7).

6. A coal chemical high-salt wastewater desalination and resource processing device according to claim 5, characterized in that: The plurality of mixing plates (84) are distributed in a ring array, and the discharge pipe (6) is fixedly connected in the connection groove (51).

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