Equipment and method for removing chromaticity of biochemical tail water in coal chemical sewage treatment

Abstract

The invention discloses equipment and method for removing chromaticity of biochemical tail water in coal chemical sewage treatment, and relates to the technical field of sewage treatment.The equipment comprises a base, a quantitative batching device and a sedimentation device are installed on the base, fine coal gasification slag is contained in the quantitative batching device, a second connecting pipe is installed on the quantitative batching device and communicated with the sedimentation device, and the sedimentation device is communicated with the second connecting pipe; the fine coal gasification slag is led to the settling device, one side of the second connecting pipe is connected with a first connecting pipe, a solution barrel is arranged on the first connecting pipe, and sewage to be treated is contained in the solution barrel. According to the technical scheme, the coal gasification fine slag is used for adsorbing colored substances in sewage, the activated carbon has a developed pore structure and a huge specific surface area and can effectively adsorb chromaticity molecules, and the coal gasification fine slag which is originally regarded as waste is used, so that resource utilization of solid waste is realized, and the pressure on the environment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a device and a method for removing chromaticity of biochemical tail water from coal chemical sewage treatment. Background Art

[0002] The discharge of industrial wastewater and domestic sewage is extremely polluting to the environment, among which chromaticity is an important indicator of sewage discharge. The chromaticity of sewage is often related to the color-developing organic matter and non-ferrous metal ions contained in it. For example, in the coal chemical production process, these organic substances will dissolve or decompose into sewage, causing the sewage to show color. In addition, the composition of raw coal pyrolysis wastewater is complex, among which high-concentration organic matter, such as phenols, benzene series, etc., the unsaturated bonds and conjugated systems in their molecular structure will absorb light of specific wavelengths, thereby showing chromaticity. Microbial metabolites may also produce some colored substances in the biochemical treatment system. Not only does it affect human life in terms of senses, but it also seriously pollutes the environment. Therefore, the treatment of sewage chromaticity has become an important direction of sewage treatment research. The biochemical tail water of industrial sewage treatment plants needs to study and analyze its color development reasons and speculate the source of chromaticity pollution. In the traditional method of treating chromaticity, water treatment chelating agents are used for care, which increases the cost, and the fusion effect of directly adding water treatment chelating agents to the sewage pool is limited, and the final treatment effect is greatly reduced. Summary of the invention

[0003] In view of the above technical problems, the present invention discloses a device for removing the color of biochemical tail water from coal chemical wastewater treatment, including a base, a quantitative dosing device and a sedimentation device installed on the base, the quantitative dosing device is equipped with coal gasification fine slag, the quantitative dosing device is equipped with a connecting pipe 2 connected to the sedimentation device, the coal gasification fine slag leads to the sedimentation device, one side of the connecting pipe 2 is connected to a connecting pipe 1, the connecting pipe 1 is equipped with a solution barrel, and the solution barrel is filled with sewage to be treated. Through the above technical scheme, the coal gasification fine slag is used to adsorb the colored substances in the sewage. The activated carbon has a developed pore structure and a huge specific surface area, which can effectively adsorb color molecules, and the use of the coal gasification fine slag originally regarded as waste realizes the resource utilization of solid waste and reduces the pressure on the environment.

[0004] Furthermore, the quantitative batching device includes a coal gasification fine slag bucket, a batching bucket cover is fixedly mounted on the coal gasification fine slag bucket, a batching motor is fixedly mounted on the batching motor rotating shaft, a shifting rod is fixedly mounted on the batching rotating shaft, a middle plate is fixedly mounted in the coal gasification fine slag bucket, an upper plate is fixedly mounted on the batching rotating shaft, a material discharge channel is arranged on the middle plate, and an opening is also arranged at the lower side of the shifting rod. Through the above technical scheme, the coal gasification fine slag can be shifted to the material discharge channel and dropped by the rotation of the shifting rod in the coal gasification fine slag bucket, and the opening is arranged at the lower side of the shifting rod so that the amount dropped each time is determined, and only the coal gasification fine slag at the lower side of the shifting rod can drop.

[0005] Furthermore, a lower plate is fixedly mounted on the lower side of the coal gasification fine slag barrel, a scraping rod is fixedly mounted on the lower end of the batching shaft, the scraping rod is fitted with the lower plate, a feeding opening is arranged on the batching barrel cover, a slope is arranged on the inner side of the feeding opening, a feeding circular hole is arranged at the lowest point of the slope, a connecting channel is fixedly mounted on the lower side of the feeding circular hole, and a plurality of storage holes are arranged on the lower plate. Through the above technical scheme, the coal gasification fine slag falls into the feeding opening and is then smoothed by the scraping rod, and the fallen coal gasification fine slag is further quantified to ensure the concentration of the subsequent coal gasification fine slag, and the excess coal gasification fine slag is transferred to the storage hole for storage.

[0006] Furthermore, a thin pipe is fixedly installed at the lower end of the connecting channel, a short pipe is installed at the first end of the thin pipe, the short pipe is connected to the pump, a long pipe is fixedly installed at the second end of the thin pipe, the long pipe is connected to the second connecting pipe, and the inner diameter of the thin pipe is smaller than the inner diameters of the short pipe and the long pipe.

[0007] Furthermore, a movable plate is slidably installed in the thin pipe, and the lower side of the movable plate is driven up and down by an electric cylinder. Through the above technical solution, water is pumped from the short pipe to the long pipe, and then the water flow speed increases when passing through the thin pipe, which will absorb the coal gasification slag downward for fusion. The upward and downward movement of the movable plate can change the inner diameter of the thin pipe, which can change the flow speed of the water in the thin pipe, and can also make the coal gasification slag and water mixed with different concentrations.

[0008] Furthermore, a blocking assembly is installed under the quantitative dosing device, and the blocking assembly includes a blocking plate, which is slidably installed in the connecting channel, a matching shaft is fixed on the blocking plate, a rotating rod is rotatably installed at the lower side of the coal gasification fine slag barrel, a torsion spring is fixed between the rotating rod and the coal gasification fine slag barrel, a slide groove is provided at the first end of the rotating rod, the slide groove cooperates with the matching shaft, a fan-shaped plate is fixed at the lower end of the connecting channel, and the fan-shaped plate cooperates with the second end of the rotating rod. Through the above technical solution, the coal gasification fine slag can be kept closed during the process of falling up the slope, so that the material discharge opening starts to fall after it is just full, and the quantitative falling is completed, which makes it easier to control the concentration later.

[0009] Furthermore, the sedimentation device includes a reaction barrel, a reaction cover is fixedly mounted on the reaction barrel, a stirring motor is fixedly mounted on the reaction cover, a stirring shaft is fixedly mounted on the rotating shaft of the stirring motor, an active blade is fixedly mounted on the lower end of the stirring shaft, and a screw stack sludge dewatering machine is fixedly mounted on the lower end of the reaction barrel.

[0010] Furthermore, a rotating plate is rotatably mounted in the reaction barrel, a stirring blade is fixedly mounted on the rotating plate, a limit plate is fixedly mounted on the lower side of the rotating plate, the active blade contacts the limit plate to drive the rotating plate to rotate, and the active blade rotates in the opposite direction and together with the rotating plate separates the upper and lower parts of the reaction barrel. Through the above technical solution, the rotation of the stirring shaft can drive the solution in the reaction barrel to be fully mixed. After precipitation, the stirring shaft is reversed, and the active blade and the rotating plate are separated, with more precipitation on the lower side and more solution on the upper side. The precipitation is then further processed, greatly improving efficiency.

[0011] A method for removing chromaticity of biochemical tail water from coal chemical wastewater treatment comprises the following steps:

[0012] Step 1: Pretreatment, using coagulation flotation and hydrolysis acidification to pretreat the sewage;

[0013] Step 2: Adsorption, introducing coal gasification fine slag into the sewage for adsorption;

[0014] Step 3: Sedimentation, adding 0.01% PAC and 0.0005% PAM, after sedimentation, use a screw press sludge dewatering machine to dewater the sludge.

[0015] The beneficial effects of the present invention compared with the prior art are:

[0016] (1) Through the technical solution of the present invention, coal gasification slag is used to adsorb colored substances in sewage. Activated carbon has a developed pore structure and a huge specific surface area, which can effectively adsorb color molecules. In addition, the use of coal gasification slag, which was originally regarded as waste, realizes the resource utilization of solid waste and reduces the pressure on the environment. Compared with the expensive chemical agents or complex treatment equipment used in traditional decolorization methods, coal gasification slag, as a relatively cheap and easily available material, can significantly reduce the cost of decolorization treatment; coal gasification slag can not only remove color, but also remove organic pollutants in sewage at the same time, thereby achieving a multifunctional integrated treatment effect. In the process of using coal gasification slag for decolorization treatment, the use of chemical agents is reduced, and the risk of secondary pollution is reduced, which is in line with the concept of green environmental protection. For coal chemical wastewater of different types and sources, corresponding coal gasification slag treatment schemes are developed to improve its decolorization adaptability under complex water quality conditions.

[0017] (2) Through the technical solution of the present invention, the coal gasification fine slag can be pushed into the discharge channel and fall by rotating the lever in the coal gasification fine slag barrel. An opening is provided at the lower side of the lever so that the amount of coal gasification fine slag falling each time is fixed, and only the coal gasification fine slag at the lower side of the lever can fall.

[0018] (3) Through the technical solution of the present invention, the coal gasification fine slag falls into the discharge opening and is then smoothed by the scraper rod, and the fallen coal gasification fine slag is further quantified to ensure the concentration of the subsequent coal gasification fine slag. The excess coal gasification fine slag is transferred to the storage hole for storage.

[0019] (4) Through the technical solution of the present invention, water is pumped from the short pipe to the long pipe, and then the water flow rate becomes faster when passing through the thin pipe, which will adsorb the coal gasification fine slag downward for fusion. The moving plate can change the inner diameter of the thin pipe by moving up and down, thereby changing the flow rate of water in the thin pipe and making the concentration of the mixture of coal gasification fine slag and water different.

[0020] (5) Through the technical solution of the present invention, the coal gasification fine slag can remain closed during the process of falling up the slope, so that the discharge opening starts to fall after it is just full, completing the quantitative falling, which makes it easier to control the concentration later.

[0021] (6) Through the technical solution of the present invention, the rotation of the stirring shaft can drive the solution in the reaction barrel to be fully mixed. After precipitation, the stirring shaft is reversed, and the active blades and the rotating plate are separated. There is more precipitation on the lower side and more solution on the upper side. The precipitation is then further processed, which greatly improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0023] Figure 2 Schematic diagram of a quantitative batching device according to an embodiment of the present invention.

[0024] Figure 3 Schematic diagram of the internal structure of the quantitative batching device according to an embodiment of the present invention.

[0025] Figure 4 It is a side view of a quantitative dosing device according to an embodiment of the present invention.

[0026] Figure 5 for Figure 4 Cross-sectional view at CC.

[0027] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0028] Figure 7 Schematic diagram of a blocking component according to an embodiment of the present invention.

[0029] Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0030] Fig. 9 It is a schematic diagram of the internal structure of the sedimentation device according to an embodiment of the present invention.

[0031] Fig.10 It is a schematic diagram of some parts of the sedimentation device according to an embodiment of the present invention.

[0032] Fig.11 The figure is a processing flow chart of an embodiment of the present invention.

[0033] Figure numbers: 1-quantitative batching device; 2-blocking assembly; 3-sedimentation device; 4-base; 5-bracket; 6-solution barrel; 7-connecting pipe 1; 8-connecting pipe 2; 101-coal gasification fine slag barrel; 102-batch barrel cover; 103-batch motor; 104-batch shaft; 105-push rod; 106-upper plate; 107-middle plate; 108-feeding channel; 109-scraping rod; 110-storage hole; 111-slope; 112-feeding opening; 113-feeding round hole; 114-connecting channel; 115-long pipeline; 1 16-thin pipe; 117-electric cylinder; 118-moving plate; 119-short pipe; 120-lower plate; 121-check valve; 201-fan plate; 202-rotating rod; 203-torsion spring; 204-slide; 205-matching shaft; 206-blocking plate; 301-reaction barrel; 302-reaction cover; 303-stirring motor; 304-stirring shaft; 305-rotating plate; 306-stirring blade; 307-active blade; 308-valve; 309-screw stacking sludge dewatering machine; 310-limiting plate; 311-stirring bracket. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0035] like Figure 1-Figure 11The device for removing the color of biochemical tail water from coal chemical wastewater treatment shown in the figure comprises a base 4, on which a quantitative dosing device 1 and a settling device 3 are installed, a plugging component 2 is installed on the lower side of the quantitative dosing device 1, and coal gasification fine slag is stored in the quantitative dosing device 1, and the quantitative dosing device 1 can quantitatively configure the concentration of the coal gasification fine slag discharged, and the plugging component 2 can quantitatively discharge the coal gasification fine slag and accurately control it, and the quantitative dosing device 1 is equipped with a connecting pipe 2 8 to communicate with the settling device 3, and the coal gasification fine slag leads to the settling device 3, and one side of the connecting pipe 2 8 is connected to a connecting pipe 1 7, and a solution barrel 6 is installed on the connecting pipe 1 7, and the solution barrel 6 contains sewage to be treated. Through the above technical scheme, the coal gasification fine slag is used to adsorb the colored substances in the sewage, and the activated carbon has a developed pore structure and a huge specific surface area, which can effectively adsorb the color molecules, and the use of the coal gasification fine slag originally regarded as waste realizes the resource utilization of solid waste and reduces the pressure on the environment.

[0036] In this embodiment, the quantitative batching device 1 includes a coal gasification fine slag barrel 101, which is a round barrel. A batching barrel cover 102 is fixedly installed on the coal gasification fine slag barrel 101. The batching barrel cover 102 is detachable and fixed with bolts. A batching motor 103 is fixedly installed on the batching barrel cover 102. The rotating shaft of the batching motor 103 passes through the batching barrel cover 102, and a batching shaft 104 is fixedly installed through a coupling. The batching shaft 104 passes through the coal gasification fine slag barrel 101 and extends all the way to the coal gasification fine slag barrel 1 01, a lever 105 is fixedly mounted on the batching shaft 104, the lower side of the lever 105 is open, and a side opening is provided, so that materials can gather on the lower side of the lever 105, and the upper side of the lever 105 blocks the gasification fine slag from falling directly from the upper side. During the rotation, the lower side of the lever 105 is filled, and a middle plate 107 is fixedly mounted in the gasification fine slag barrel 101, and an upper plate 106 is fixedly mounted on the batching shaft 104, a material discharge channel 108 is provided on the middle plate 107, and an opening is also provided on the lower side of the lever 105. After the lower opening of the lever 105 is aligned with the discharge channel 108, the gasification fine slag can fall down. During the rotation process, the lower side of the lever 105 is filled. When it coincides with the discharge channel 108, it falls down, and due to the obstruction of the lever 105, not too much will fall, and only the lower side of the lever 105 will fall. Through the above technical solution, the gasification fine slag can be rotated in the gasification fine slag barrel 101 by the lever 105 to push the gasification fine slag into the discharge channel 108 and let it fall. The opening is set on the lower side of the lever 105 so that the amount of each fall is determined, and only the gasification fine slag on the lower side of the lever 105 can fall.

[0037] In this embodiment, a lower plate 120 is fixedly mounted on the lower side of the gasification fine slag bucket 101, and a scraping rod 109 is fixedly mounted on the lower end of the batching shaft 104. Two scraping rods 109 are provided, and a gap is left between the discharge channel 108 and the lower plate 120. The gap is just enough for the scraping rod 109 to pass through, because the scraping rod 109 is fitted with the lower plate 120. A discharge opening 112 is provided on the batching barrel cover 102, and a slope 111 is provided inside the discharge opening 112. The slope 111 is provided with a A feeding circular hole 113 is set at the lowest point, and a connecting channel 114 is fixedly installed at the lower side of the feeding circular hole 113. When the lower side of the lever 105 is aligned with the feeding channel 108, the leveling rod 109 has not yet reached the lower side of the feeding channel 108. When the lower side of the lever 105 is separated from the feeding channel 108, the leveling rod 109 passes the upper side of the feeding opening 112 and takes away the protruding part, and then the second leveling rod 109 is also leveled. A plurality of storage holes 110 are set on the lower plate 120. Through the above technical solution, the coal gasification fine slag falls into the feeding opening 112 and is then leveled by the leveling rod 109. The fallen coal gasification fine slag is further quantified to ensure the concentration of the subsequent coal gasification fine slag. The excess coal gasification fine slag is moved to the storage hole 110 for storage.

[0038] In this embodiment, a thin pipe 116 is fixedly installed at the lower end of the connecting channel 114, a short pipe 119 is installed at the first end of the thin pipe 116, and the short pipe 119 is connected to the pump. A long pipe 115 is fixedly installed at the second end of the thin pipe 116, and the long pipe 115 is connected to the connecting pipe 28. The inner diameter of the thin pipe 116 is smaller than the inner diameters of the short pipe 119 and the long pipe 115. A movable plate 118 is slidably installed in the thin pipe 116, and the lower side of the movable plate 118 is driven to move up and down by an electric cylinder 117. Through the above technical solution, the short pipe 119 passes water to the long pipe 115 through a pump, and then the water flow speed becomes faster when passing through the thin pipe 116, which will absorb the coal gasification fine slag downward for fusion. The movable plate 118 moves up and down to change the inner diameter of the thin pipe 116, thereby changing the flow speed of water in the thin pipe 116, and also making the coal gasification fine slag and water mixed with different concentrations. If the lower side of the connecting channel 114 is blocked, the water in the thin pipe 116 will stick to the lower side of the coal gasification fine slag. At this time, the coal gasification fine slag will be taken away, and the blockage can be unblocked.

[0039] In this embodiment, the blocking component 2 includes a blocking plate 206, which is slidably installed in the connecting channel 114. When the blocking plate 206 enters the connecting channel 114, the connecting channel 114 can be completely blocked. The matching shaft 205 is fixed on the blocking plate 206. A rotating rod 202 is rotatably installed at the lower side of the coal gasification fine slag bucket 101. A torsion spring 203 is fixedly installed between the rotating rod 202 and the coal gasification fine slag bucket 101. A sliding groove 204 is provided at the first end of the rotating rod 202, and the sliding groove 204 cooperates with the matching shaft 205. A fan-shaped plate 201 is fixedly installed at the lower end of the connecting channel 114, and the fan-shaped plate 201 cooperates with the second end of the rotating rod 202. When the lever 105 begins to overlap with the discharge channel 108, the fan-shaped plate 201 opens. It starts to cooperate with the rotating rod 202, driving the rotating rod 202 to rotate, the torsion spring 203 is twisted, and the blocking plate 206 is driven to move into the connecting channel 114 through the slide groove 204 and the matching shaft 205, and finally remains blocked. When the two scraping rods 109 leave the upper end of the discharge opening 112, the fan plate 201 also leaves the rotating rod 202. At this time, the rotating rod 202 is reset under the drive of the torsion spring 203, and the blocking plate 206 slides out of the connecting channel 114, so that the gasification fine slag can fall. Through the above technical solution, the gasification fine slag can remain closed during the process of falling on the slope 111, so that the discharge opening 112 starts to fall after it is just full, completing the quantitative falling, and it is easier to control the concentration later.

[0040] In this embodiment, the sedimentation device 3 includes a reaction barrel 301, a reaction cover plate 302 is fixedly mounted on the reaction barrel 301, a stirring motor 303 is fixedly mounted on the reaction cover plate 302, a stirring shaft 304 is fixedly mounted on the rotating shaft of the stirring motor 303, an active blade 307 is fixedly mounted on the lower end of the stirring shaft 304, and a spiral sludge dewatering machine 309 is fixedly mounted on the lower end of the reaction barrel 301. A rotating plate 305 is rotatably mounted in the reaction barrel 301, a stirring blade 306 is fixedly mounted on the rotating plate 305, a limit plate 310 is fixedly mounted on the lower side of the rotating plate 305, the active blade 307 contacts the limit plate 310 to drive the rotating plate 305 to rotate, and the active blade 307 rotates in the opposite direction and together with the rotating plate 305 separates the upper and lower parts of the reaction barrel 301. Through the above technical solution, the rotation of the stirring shaft 304 can drive the solution in the reaction barrel 301 to be fully mixed. After precipitation, the stirring shaft 304 is reversed, and the active blades 307 and the rotating plate 305 are separated. There are more precipitations on the lower side and more solutions on the upper side. The precipitation is then further processed, which greatly improves efficiency.

[0041] Working principle: Start the batching motor 103, the batching motor 103 rotates to drive the batching shaft 104, the batching shaft 104 drives the lever 105 to rotate, the coal gasification fine slag accumulates on the lower side of the lever 105, falls when passing through the discharge channel 108, and then fills the inside of the discharge opening 112, the scraping rod 109 smoothes the upper side when passing through the discharge opening 112, and the connecting channel 114 is blocked by the blocking component 2 during the process, and the lever 105 and the discharge channel 108 start to When the two scraping rods 109 leave the upper end of the material discharge opening 112, the fan-shaped plate 201 also leaves the rotating rod 202. At this time, the rotating rod 202 is reset under the drive of the torsion spring 203, and the blocking plate 206 slides away. The coal gasification slag can therefore fall down inside the connecting channel 114, and the pump is started to flush water from the short pipeline 119 into the thin pipeline 116, so as to adjust the inner diameter of the thin pipeline 116, accelerate the water flow speed in the thin pipeline 116, and absorb the coal gasification slag falling from the connecting channel 114. A one-way valve 121 is arranged in the connecting channel 114, and the one-way valve 121 prevents backflow. The one-way valve 121 is a protective plate that can rotate downward, and forms a certain angle with the side wall in a natural state, leaving a gap in the middle for the coal gasification slag to pass through. When water flows back, the one-way valve 121 rotates upward to block the channel, and then the coal gasification slag with a fixed ratio is fixed, and then passes through the long pipeline 115 and the connecting pipe 2 8, and the sewage is merged, and is merged in the connecting pipe 2 8, and finally passes into the sedimentation device 3, and then is stirred, reacted and precipitated in the sedimentation device 3, and then the precipitation and the solution are separated by the rotating plate 305 and the active blade 307, and the precipitation is treated separately.

[0042] A method for removing the chromaticity of biochemical tail water from coal chemical wastewater treatment, using the above-mentioned equipment, comprises the following steps:

[0043] Step 1: Pretreatment, use coagulation flotation and hydrolysis acidification to pretreat the sewage, add the gravity wastewater containing oil and other pollutants into the equalization tank, wash it through gasification, phenol ammonia and methanol, then enter the flotation tank for hydrolysis acidification, and then enter the sequencing batch sedimentation tank after HBF treatment.

[0044] Step 2: Adsorption, introduce coal gasification slag into the sewage collection for adsorption; place the treated solution in the solution barrel 6, place the coal gasification slag in the quantitative batching device 1, and then mix and adsorb.

[0045] Step 3: Sedimentation. Add 0.01% PAC and 0.0005% PAM into the sedimentation device 3 for Fenton reaction. The sedimentation device 3 can be used as a Fenton reaction tank and also as a Fenton sedimentation tank. After sedimentation, the sludge is dehydrated using a spiral sludge dewatering machine. The upper solution enters the clear water tank and is discharged when it reaches the standard.

Claims

1. A device for removing the chromaticity of biochemical tail water from coal chemical wastewater treatment, characterized in that: The invention comprises a base (4), on which a quantitative dosing device (1) and a settling device (3) are mounted, wherein the quantitative dosing device (1) is filled with coal gasification fine slag, and the quantitative dosing device (1) is equipped with a second connecting pipe (8) for communicating with the settling device (3), wherein the coal gasification fine slag leads to the settling device (3), and one side of the second connecting pipe (8) is connected to a first connecting pipe (7), and the first connecting pipe (7) is equipped with a solution barrel (6), wherein the solution barrel (6) contains sewage to be treated.

2. The device for removing chromaticity of biochemical tail water from coal chemical wastewater treatment according to claim 1 is characterized in that: The quantitative batching device (1) comprises a coal gasification fine slag bucket (101), a batching bucket cover (102) is fixedly mounted on the coal gasification fine slag bucket (101), a batching motor (103) is fixedly mounted on the batching bucket cover (102), a batching rotating shaft (104) is fixedly mounted on the rotating shaft of the batching motor (103), a shifting rod (105) is fixedly mounted on the batching rotating shaft (104), a middle plate (107) is fixedly mounted in the coal gasification fine slag bucket (101), an upper plate (106) is fixedly mounted on the batching rotating shaft (104), a material discharge channel (108) is arranged on the middle plate (107), and an opening is also arranged on the lower side of the shifting rod (105).

3. The device for removing chromaticity of biochemical tail water from coal chemical wastewater treatment according to claim 2 is characterized in that: A lower plate (120) is fixedly mounted on the lower side of the coal gasification fine slag bucket (101); a scraping rod (109) is fixedly mounted on the lower end of the batching shaft (104); the scraping rod (109) is in contact with the lower plate (120); a material discharge opening (112) is arranged on the batching bucket cover (102); a slope (111) is arranged on the inner side of the material discharge opening (112); a material discharge circular hole (113) is arranged at the lowest point of the slope (111); a connecting channel (114) is fixedly mounted on the lower side of the material discharge circular hole (113); and a plurality of material storage holes (110) are arranged on the lower plate (120).

4. The device for removing chromaticity of biochemical tail water from coal chemical wastewater treatment according to claim 3 is characterized in that: A thin pipe (116) is fixedly mounted at the lower end of the connecting passage (114); a short pipe (119) is mounted at the first end of the thin pipe (116); the short pipe (119) is connected to a pump; a long pipe (115) is fixedly mounted at the second end of the thin pipe (116); the long pipe (115) is connected to the second connecting pipe (8); the inner diameter of the thin pipe (116) is smaller than the inner diameters of the short pipe (119) and the long pipe (115).

5. The device for removing chromaticity of biochemical tail water from coal chemical wastewater treatment according to claim 4 is characterized in that: A moving plate (118) is slidably mounted in the thin pipe (116), and the lower side of the moving plate (118) is driven to move up and down by an electric cylinder (117).

6. The device for removing chromaticity of biochemical tail water from coal chemical wastewater treatment according to claim 5 is characterized in that: A blocking assembly (2) is installed under the quantitative dosing device (1), and the blocking assembly (2) includes a blocking plate (206), which is slidably installed in the connecting channel (114), and a matching shaft (205) is fixed on the blocking plate (206). A rotating rod (202) is rotatably installed on the lower side of the coal gasification fine slag bucket (101), and a torsion spring (203) is fixed between the rotating rod (202) and the coal gasification fine slag bucket (101). A sliding groove (204) is provided at the first end of the rotating rod (202), and the sliding groove (204) cooperates with the matching shaft (205). A fan-shaped plate (201) is fixedly installed at the lower end of the connecting channel (114), and the fan-shaped plate (201) cooperates with the second end of the rotating rod (202).

7. The device for removing chromaticity of biochemical tail water from coal chemical wastewater treatment according to claim 5 is characterized in that: The sedimentation device (3) comprises a reaction barrel (301), a reaction cover plate (302) is fixedly mounted on the reaction barrel (301), a stirring motor (303) is fixedly mounted on the reaction cover plate (302), a stirring shaft (304) is fixedly mounted on the rotating shaft of the stirring motor (303), an active blade (307) is fixedly mounted at the lower end of the stirring shaft (304), and a spiral sludge dewatering machine (309) is fixedly mounted at the lower end of the reaction barrel (301).

8. The device for removing chromaticity of biochemical tail water from coal chemical wastewater treatment according to claim 7 is characterized in that: A rotating plate (305) is rotatably mounted in the reaction barrel (301), a stirring blade (306) is fixedly mounted on the rotating plate (305), a limiting plate (310) is fixedly mounted on the lower side of the rotating plate (305), an active blade (307) contacts the limiting plate (310) to drive the rotating plate (305) to rotate, and the active blade (307) rotates in the opposite direction to separate the upper and lower parts of the reaction barrel (301) together with the rotating plate (305).

9. A method for removing the chromaticity of biochemical tail water from coal chemical wastewater treatment, using the device described in claim 1, characterized in that: The steps include: Step 1: Pretreatment, using coagulation flotation and hydrolysis acidification to pretreat the sewage; Step 2: Adsorption, introducing coal gasification fine slag into the sewage for adsorption; Step 3: Sedimentation, adding 0.01% PAC and 0.0005% PAM, after sedimentation, use a screw press sludge dewatering machine to dewater the sludge.

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