CN209940629U

CN209940629U - Coal chemical wastewater treatment device

Info

Publication number: CN209940629U
Application number: CN201920282275.7U
Authority: CN
Inventors: 吴青松
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2020-01-14
Anticipated expiration: 2029-03-06

Abstract

The utility model provides a coal chemical wastewater treatment device, including the leading-in fill of coal chemical wastewater, the clearance lid, primary treatment is fought, handles the case, and control switch, driving motor, sleeve coupling, connecting seat, honeycomb duct, main tributary supporting leg follow supporting leg, slipmat, the portable filter screen structure of supplementary clearance fast, rotation type waste water impurity adsorption block structure and the processing of keeping in deposit storage water tank structure. The utility model discloses the setting of portable ring, lifting rod, fixed pipe, lifting plate, strain miscellaneous net and mount pad is favorable to increasing waste water elementary filtration function to strain miscellaneous, can be convenient for carry simultaneously and pull the clearance, convenient operation; adsorb the block, the sleeve pipe is dismantled to the support frame, and the rotation axis, the setting of deep groove ball bearing and mount pad is favorable to increasing rotatory absorption processing function to guarantee that waste water treatment is clean more effective, improve work efficiency.

Description

Coal chemical wastewater treatment device

Technical Field

The utility model belongs to the technical field of coal chemical industry equipment, especially, relate to coal chemical industry effluent treatment plant.

Background

Environmental pollution caused by economic development is increasingly serious, environmental protection is increasingly the focus of the modern times, and environmental protection water treatment is a very critical part of the environmental protection water treatment. Environmental water treatment is focused on the treatment of high concentration industrial wastewater.

The coal chemical industry is a clean and efficient coal utilization mode, but a large amount of high-pollution coal gasification wastewater is generated in the coal gasification process, the components of the wastewater are developed, the types of refractory organic matters are various, the wastewater belongs to one of industrial wastewater which is difficult to biochemically generate and has large harm, and the coal chemical industry wastewater is mainly the coal gas washing wastewater, wherein a large amount of toxic and harmful substances such as phenol, cyanogen and the like are contained.

The device comprises a sedimentation tank, a purification tank and a water storage tank, wherein an immersion liquid plate is arranged in the sedimentation tank corresponding to the output end of an extraction pump, the bottom of the sedimentation tank is connected with a separation hopper through a filter screen, the side edge of the sedimentation tank is connected with an extraction pipe through an extraction pump II, the output end of the extraction pump II is communicated and connected with the interior of the purification tank, the output end of the purification tank corresponding to the extraction pump II is provided with an activated carbon adsorption plate and a purification core plate through a clamping groove, and the side edge of the water storage tank is communicated and connected with the output end of the purification tank through a connecting pipe. But the existing coal chemical wastewater treatment device still has the problems that the device does not have the function of mixing and adsorbing treatment, can not primarily filter impurities and is inconvenient to temporarily store the treated wastewater.

Therefore, the invention of the coal chemical wastewater treatment device is very necessary.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a coal chemical industry effluent treatment plant to there is not possessing the thoughtlessly to mix and adsorb the processing function in solving current coal chemical industry effluent treatment plant, can't elementary strain miscellaneous and the problem of the waste water after being convenient for to keep in the processing not. The coal chemical industry wastewater treatment device comprises a coal chemical industry wastewater introduction hopper, a cleaning cover, a primary treatment hopper, a treatment box, a control switch, a driving motor, a sleeve coupling, a connecting seat, a flow guide pipe, a main support leg, a secondary support leg, an anti-slip pad, a portable rapid auxiliary cleaning filter screen structure, a rotary wastewater impurity adsorption block structure and a temporary storage treatment sedimentation water storage tank structure, wherein the coal chemical industry wastewater introduction hopper is respectively in threaded connection with the middle positions of the left side and the right side of the interior of the cleaning cover; the cleaning cover is connected to the inlet of the upper end of the primary processing hopper in a threaded manner; the lower end of the primary processing hopper is in threaded connection with an inlet at the middle position of the upper part of the processing box; the left upper side of the treatment box is connected with a control switch through a screw; the transverse right end of the driving motor is connected to the middle position of the left side of the treatment box through a bolt; an output shaft of the driving motor penetrates through the middle position of the left wall of the treatment box and is in key connection with the inner left end of the sleeve coupling; the connecting seats are respectively installed at the middle positions of the left side and the right side of the lower part of the treatment box by bolts at the longitudinal upper ends; the upper end of the flow guide pipe is in threaded connection with the middle position of the bottom of the treatment box; the bottoms of the main supporting leg and the auxiliary supporting leg are respectively connected with an anti-skid pad by screws; the portable quick auxiliary cleaning filter screen structure is connected with the cleaning cover; the rotary wastewater impurity adsorption block structure is connected with the treatment box; the temporary storage treatment sedimentation water storage tank structure is connected with the flow guide pipe; the portable filter screen structure capable of rapidly assisting in cleaning comprises a hand-held ring, a lifting rod, a fixed pipe, a lifting plate, a sundry filter screen and a mounting lining seat, wherein the hand-held ring is in threaded connection with the upper end of the lifting rod; the lifting rod is longitudinally movably inserted in the middle of the inside of the fixed pipe; the bolt at the transverse middle position of the lifting plate is arranged at the lower end of the lifting rod; one end of each impurity filtering net is connected to the middle position inside the mounting lining seat in a shaft mode, and the other end of each impurity filtering net is arranged on the left side and the right side of the upper portion of the pulling plate.

Preferably, the rotary type wastewater impurity adsorption block structure comprises adsorption blocks, support frames, a disassembly sleeve, a rotating shaft, a deep groove ball bearing and a mounting seat, wherein the adsorption blocks are respectively and transversely mounted on the upper sides between the support frames through bolts; the support frames are respectively welded on the left side and the right side of the upper part of the dismounting sleeve and the left side and the right side of the lower part of the dismounting sleeve; the disassembly sleeve is transversely sleeved in the middle of the outer wall of the rotating shaft; the transverse right end of the rotating shaft is mounted in the middle of the inner portion of the mounting seat through a deep groove ball bearing.

Preferably, the temporary storage treatment precipitation water storage tank structure comprises a U-shaped socket, a water storage tank body, a cleaning plate, a final filter screen, soft goose stones and a pipe with a valve, wherein the U-shaped socket is mounted in the middle of the left wall in the water storage tank body through a bolt; the cleaning plate longitudinal bolt is arranged at the outlet end of the lower right side of the water storage tank body; one transverse end of the final filter screen is inserted in the middle of the inside of the U-shaped socket, and the other transverse end of the final filter screen is connected to the upper left side of the cleaning plate through a screw; the soft goose stones are sequentially paved at the bottom end of the interior of the water storage tank body from left to right in a transverse mode; the upper end of the calandria with the valve calandria in the longitudinal direction is in threaded connection with the outlet at the middle position of the bottom of the water storage tank body.

Preferably, the hand ring is a stainless steel ring with an internally threaded pipe integrally arranged at the lower part.

Preferably, the fixed pipe is longitudinally screwed in a threaded hole formed in the middle of the inside of the cleaning cover.

Preferably, the impurity filtering net is a rectangular stainless steel filtering net.

Preferably, the mounting lining seats are respectively installed on the front side and the rear side of the left wall and the right wall in the primary treatment bucket through bolts.

Preferably, the disassembling sleeve and the rotating shaft are arranged in a bolt connection mode.

Preferably, the left end of the rotating shaft is connected with the right end of the inner part of the sleeve coupling in a key mode.

Preferably, the mounting seat longitudinal bolt is arranged in the middle of the right wall of the inner part of the treatment box.

Preferably, the connecting seats are respectively installed at the middle positions of the left side and the right side of the upper part of the water storage tank body through longitudinal lower end bolts.

Preferably, the main supporting legs are respectively installed at the front and rear parts of the left lower side of the water storage tank body through upper end bolts, and the auxiliary supporting legs are respectively installed at the front and rear parts of the right lower side of the water storage tank body through upper end bolts.

Preferably, the lower end of the flow guide pipe is in threaded connection with an inlet at the middle position of the upper part of the water storage tank body.

Preferably, the soft goose stone is provided with a plurality of, the double-deck setting of soft goose stone.

Preferably, the control switch is connected with a lead of the driving motor.

Preferably, the control switch is a ship-shaped switch with the model of KCD1, and the driving motor is a motor with the model of 775.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, the hand ring, the lifting rod, fixed pipe, the lifting plate, the setting of straining miscellaneous net and mount pad is favorable to increasing the elementary filter function of waste water to strain miscellaneous, can be convenient for carry simultaneously and draw the clearance, convenient operation.

2. The utility model discloses in, the absorption block, the support frame, the sleeve pipe is dismantled, the rotation axis, the setting of deep groove ball bearing and mount pad is favorable to increasing rotatory absorption processing function to guarantee that waste water treatment is clean more effective, improve work efficiency.

3. The utility model discloses in, this setting of water storage box be favorable to keeping in the waste water after the processing, avoid direct discharge polluted environment.

4. The utility model discloses in, the setting of clearance board, ultimate filter screen and U type socket is favorable to dismantling the ultimate filter screen of clearance, convenient operation.

5. The utility model discloses in, the setting of soft stone of goose, be favorable to increasing the waste water after handling and deposit filtering capability.

6. The utility model discloses in, the setting of taking the valve calandria, be favorable to in time discharging the waste water after handling, guarantee to discharge the convenience.

7. The utility model discloses in, clearance lid and primary treatment fill the setting, be favorable to clearing up the inside impurity of primary treatment fill, be convenient for operate.

8. The utility model discloses in, main tributary supporting leg, from the setting of supporting leg and slipmat, be favorable to playing good support antiskid effect.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is the structure schematic diagram of the portable filter screen structure of the utility model.

Fig. 3 is a schematic structural view of the rotary wastewater impurity adsorption block structure of the utility model.

Fig. 4 is a schematic structural diagram of the structure of the temporary storage sedimentation water storage tank of the present invention.

In the figure:

1. leading coal chemical wastewater into a hopper; 2. cleaning the cover; 3. a primary treatment hopper; 4. a treatment tank; 5. a control switch; 6. a drive motor; 7. a sleeve coupling; 8. a connecting seat; 9. a flow guide pipe; 10. a main support leg; 11. a slave support leg; 12. a non-slip mat; 13. rapidly assisting in cleaning the portable filter screen structure; 131. a hand ring; 132. lifting a pull rod; 133. a fixed tube; 134. lifting the plate; 135. filtering the impurity net; 136. installing a lining seat; 14. the rotary type wastewater impurity adsorption block structure; 141. adsorbing the block; 142. a support frame; 143. disassembling the sleeve; 144. a rotating shaft; 145. a deep groove ball bearing; 146. a mounting seat; 15. a temporary storage sedimentation water storage tank structure; 151. a U-shaped socket; 152. a water storage tank body; 153. cleaning the plate; 154. a final filter screen; 155. soft stones of geese; 156. with valve drain.

Detailed Description

The utility model is described in detail with reference to the accompanying drawings, as shown in fig. 1 and fig. 2, the coal chemical wastewater treatment device comprises a coal chemical wastewater introduction hopper 1, a cleaning cover 2, a primary treatment hopper 3, a treatment box 4, a control switch 5, a driving motor 6, a sleeve coupler 7, a connecting seat 8, a flow guide pipe 9, a main support leg 10, a secondary support leg 11, an anti-skid pad 12, a quick auxiliary cleaning portable filter screen structure 13, a rotary wastewater impurity adsorption block structure 14 and a temporary storage treatment sedimentation water storage tank structure 15, wherein the coal chemical wastewater introduction hopper 1 is respectively in threaded connection with the middle positions of the left side and the right side of the inside of the cleaning cover 2; the cleaning cover 2 is in threaded connection with an inlet at the upper end of the primary processing hopper 3; the lower end of the primary processing hopper 3 is connected with an inlet at the middle position of the upper part of the processing box 4 through screw threads; the left upper side of the treatment box 4 is connected with a control switch 5 through a screw; the transverse right end of the driving motor 6 is connected with the middle position of the left side of the treatment box 4 through a bolt; an output shaft of the driving motor 6 penetrates through the middle position of the left wall of the treatment box 4 and is in key connection with the inner left end of the sleeve coupling 7; the connecting seats 8 are respectively installed at the middle positions of the left side and the right side of the lower part of the treatment box 4 by bolts at the longitudinal upper ends; the upper end of the draft tube 9 is in threaded connection with the middle position of the bottom of the treatment box 4; the bottoms of the main supporting leg 10 and the auxiliary supporting leg 11 are respectively connected with an anti-skid pad 12 by screws; the portable quick auxiliary cleaning filter screen structure 13 is connected with the cleaning cover 2; the rotary wastewater impurity adsorption block structure 14 is connected with the treatment box 4; the temporary storage treatment sedimentation water storage tank structure 15 is connected with the flow guide pipe 9; the portable rapid auxiliary cleaning filter screen structure 13 comprises a hand-held ring 131, a lifting rod 132, a fixing pipe 133, a lifting plate 134, a impurity filtering screen 135 and a mounting lining seat 136, wherein the hand-held ring 131 is in threaded connection with the upper end of the lifting rod 132; the lifting rod 132 is longitudinally movably inserted in the middle position in the fixed pipe 133; the lifting plate 134 is mounted at the lower end of the lifting rod 132 through a bolt at the transverse middle position; filter screen 135 one end coupling respectively in the inside intermediate position between installation lining seat 136, the other end sets up respectively in the upper portion left and right sides of carrying up arm-tie 134, with coal chemical industry waste water leading-in fill 1 of leading-in primary treatment of coal chemical industry waste water and fight 3 inside, can carry out filtering work through filter screen 135 this moment, can stimulate pull rod 132 through portable hand ring 131 and move up work in fixed pipe 133 is inside, can mention carry up arm-tie 134 this moment, make filter screen 135 remove between installation lining seat 136 is inside this moment, so that clear up the impurity on the filter screen 135, can avoid blockking up, guarantee primary treatment effect.

In this embodiment, referring to fig. 3, the rotary wastewater impurity adsorbing block structure 14 includes an adsorbing block 141, a supporting frame 142, a detaching sleeve 143, a rotating shaft 144, a deep groove ball bearing 145 and a mounting seat 146, wherein the adsorbing block 141 is installed on the upper side between the supporting frames 142 by a transverse bolt; the supporting frames 142 are respectively welded on the left and right sides of the upper part of the dismounting sleeve 143 and the left and right sides of the lower part of the dismounting sleeve 143; the dismounting sleeve 143 is transversely sleeved at the middle position of the outer wall of the rotating shaft 144; the horizontal right-hand member of rotation axis 144 install the inside intermediate position at mount pad 146 through deep groove ball bearing 145, waste water is through elementary miscellaneous back of straining, directly gets into inside handling case 4, starts control switch 5 when waste water gets into immediately for driving motor 6 action drives the rotation axis 144 through sleeve coupling 7 and rotates, makes dismantlement sleeve pipe 143 drive the rotation of support frame 142, and the accessible adsorbs block 141 and carries out the absorption processing work, with the assurance treatment effect, guarantees the treatment effeciency simultaneously.

In this embodiment, referring to fig. 4, the temporary storage settling water storage tank structure 15 includes a U-shaped socket 151, a water storage tank 152, a cleaning plate 153, a final filter screen 154, a soft goose stone 155 and a discharge pipe 156 with a valve, wherein the U-shaped socket 151 is bolted to the middle position of the left wall inside the water storage tank 152; the cleaning plate 153 is longitudinally bolted at the outlet end of the lower right side of the water storage tank body 152; one transverse end of the final filter screen 154 is inserted in the middle of the inside of the U-shaped socket 151, and the other transverse end of the final filter screen is connected to the left upper side of the cleaning plate 153 through a screw; the soft goose stones 155 are sequentially paved at the bottom end of the interior of the water storage tank body 152 from left to right in a transverse mode; take vertical upper end threaded connection of calandria of valve calandria 156 in the bottom intermediate position exit of this 152 of water storage box, waste water in the adsorption treatment gets into inside honeycomb duct 9 simultaneously, and it is inside to get into this 152 of water storage box, filter through ultimate filter screen 154, carry out precipitation work through goose soft stone 155, can guarantee the waste water treatment effect, can carry out the work of keeping in through this 152 of water storage box, in order to guarantee the waste water treatment ability, can discharge the waste water after handling to waste liquid pond or garbage bin through the valve of opening valve calandria 156, can avoid environmental pollution.

In this embodiment, the hand ring 131 is a stainless steel ring with an internally threaded tube integrally formed at the lower portion thereof.

In this embodiment, specifically, the fixing tube 133 is longitudinally screwed into a threaded hole formed in the middle position inside the cleaning cover 2.

In this embodiment, the trash filter 135 is a rectangular stainless steel filter screen.

In this embodiment, the mounting pads 136 are bolted to the front and rear sides of the left and right walls of the primary processing hopper 3.

In this embodiment, specifically, the dismounting sleeve 143 is disposed in bolt connection with the rotating shaft 144.

In this embodiment, specifically, the left end of the rotating shaft 144 is keyed to the right end inside the sleeve coupling 7.

In this embodiment, specifically, the mounting seat 146 is longitudinally bolted to the middle position of the right wall inside the treatment box 4.

In this embodiment, specifically, the connecting bases 8 are respectively installed at the middle positions of the left and right sides of the upper portion of the water storage tank body 152 by longitudinal lower end bolts.

In this embodiment, specifically, the main supporting legs 10 are respectively installed at the front and rear parts of the lower left side of the water storage tank body 152 by upper end bolts, and the auxiliary supporting legs 11 are respectively installed at the front and rear parts of the lower right side of the water storage tank body 152 by upper end bolts.

In this embodiment, specifically, the lower end of the flow guiding pipe 9 is screwed to the inlet at the middle position of the upper part of the water storage tank body 152.

In this embodiment, specifically, the soft goose stone 155 is provided with a plurality of soft goose stones 155, and the soft goose stone 155 is provided with two layers.

In this embodiment, specifically, the control switch 5 and the driving motor 6 are connected by a wire.

In this embodiment, specifically, the control switch 5 specifically adopts a boat-shaped switch with a model of KCD1, and the driving motor 6 specifically adopts a motor with a model of 775.

Principle of operation

In the utility model, the coal chemical wastewater is led into the primary treatment hopper 3 through the coal chemical wastewater leading-in hopper 1, at the moment, the filtering work can be carried out through the impurity filtering net 135, the lifting rod 132 can be pulled to move up in the fixed pipe 133 through the portable hand ring 131, at the moment, the lifting plate 134 can be lifted up, at the moment, the impurity filtering net 135 is moved between the inner parts of the mounting lining seat 136, so as to clean the impurities on the impurity filtering net 135, the blockage can be avoided, the primary treatment effect is ensured, the wastewater directly enters the treatment box 4 after primary impurity filtering, when the wastewater enters, the control switch 5 is started immediately, the driving motor 6 acts and drives the rotating shaft 144 to rotate through the sleeve coupler 7, the dismounting sleeve 143 drives the supporting frame 142 to rotate, and the adsorption treatment work can be carried out through the adsorption block 141, so as to ensure the treatment effect, and simultaneously ensure the treatment efficiency, inside waste water among the adsorption treatment and get into honeycomb duct 9 simultaneously to inside getting into this 152 of water storage box, filtering through ultimate filter screen 154, deposit work through soft stone 155 of goose, can guarantee the waste water treatment effect, can keep in work through this 152 of water storage box, in order to guarantee waste water treatment ability, can discharge the waste water after handling to waste liquid pond or garbage bin through opening the valve of taking valve calandria 156, can avoid environmental pollution.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. The coal chemical industry wastewater treatment device is characterized by comprising a coal chemical industry wastewater introduction hopper (1), a cleaning cover (2), a primary treatment hopper (3), a treatment box (4), a control switch (5), a driving motor (6), a sleeve coupling (7), a connecting seat (8), a flow guide pipe (9), main support legs (10), auxiliary support legs (11), a non-slip mat (12), a quick auxiliary cleaning portable filter screen structure (13), a rotary wastewater impurity adsorption block structure (14) and a temporary storage treatment sedimentation water storage tank structure (15), wherein the coal chemical industry wastewater introduction hopper (1) is respectively in threaded connection with the middle positions of the left side and the right side of the inside of the cleaning cover (2); the cleaning cover (2) is in threaded connection with an inlet at the upper end of the primary processing hopper (3); the lower end of the primary treatment hopper (3) is in threaded connection with an inlet at the middle position of the upper part of the treatment box (4); the left upper side of the treatment box (4) is connected with a control switch (5) through a screw; the transverse right end of the driving motor (6) is connected to the middle position of the left side of the treatment box (4) through a bolt; an output shaft of the driving motor (6) penetrates through the middle position of the left wall of the treatment box (4) and is in parallel key connection with the inner left end of the sleeve coupling (7); the connecting seats (8) are respectively installed at the middle positions of the left side and the right side of the lower part of the treatment box (4) by bolts at the longitudinal upper ends; the upper end of the flow guide pipe (9) is in threaded connection with the middle position of the bottom of the treatment box (4); the bottoms of the main supporting leg (10) and the auxiliary supporting leg (11) are respectively connected with an anti-skid pad (12) by screws; the portable quick auxiliary cleaning filter screen structure (13) is connected with the cleaning cover (2); the rotary wastewater impurity adsorption block structure (14) is connected with the treatment box (4); the temporary storage treatment sedimentation water storage tank structure (15) is connected with the flow guide pipe (9); the portable filter screen structure (13) capable of rapidly assisting in cleaning comprises a hand-held ring (131), a lifting rod (132), a fixed pipe (133), a lifting plate (134), a sundry filtering screen (135) and a mounting lining seat (136), wherein the hand-held ring (131) is in threaded connection with the upper end of the lifting rod (132); the lifting rod (132) is longitudinally movably inserted in the middle of the inside of the fixed pipe (133); the lifting plate (134) is installed at the lower end of the lifting rod (132) through a bolt at the transverse middle position; one end of each impurity filtering net (135) is connected to the middle position in the inner part between the mounting lining seats (136) in a shaft mode, and the other end of each impurity filtering net is arranged on the left side and the right side of the upper part of the pulling plate (134).

2. The coal chemical wastewater treatment device according to claim 1, wherein the rotary wastewater impurity adsorption block structure (14) comprises adsorption blocks (141), support frames (142), a dismounting sleeve (143), a rotating shaft (144), deep groove ball bearings (145) and mounting seats (146), wherein the adsorption blocks (141) are respectively installed on the upper sides between the support frames (142) through transverse bolts; the supporting frames (142) are respectively welded on the left and right sides of the upper part of the dismounting sleeve (143) and the left and right sides of the lower part of the dismounting sleeve (143); the dismounting sleeve (143) is transversely sleeved at the middle position of the outer wall of the rotating shaft (144); the transverse right end of the rotating shaft (144) is installed at the middle position in the installation seat (146) through a deep groove ball bearing (145).

3. The coal chemical industry wastewater treatment device as set forth in claim 1, wherein the temporary storage treatment sedimentation water storage tank structure (15) comprises a U-shaped socket (151), a water storage tank body (152), a cleaning plate (153), a final filter screen (154), soft goose stones (155) and a valved pipe (156), the U-shaped socket (151) is bolted to the middle position of the left wall inside the water storage tank body (152); the cleaning plate (153) is longitudinally arranged at the outlet end of the right lower side of the water storage tank body (152) through a bolt; one transverse end of the final filter screen (154) is inserted in the middle of the inside of the U-shaped socket (151), and the other transverse end of the final filter screen is connected to the left upper side of the cleaning plate (153) through a screw; the soft goose stones (155) are sequentially paved at the bottom end of the interior of the water storage tank body (152) from left to right in a transverse mode; the upper end of the calandria with the valve calandria (156) in the longitudinal direction is in threaded connection with the outlet at the middle position of the bottom of the water storage tank body (152).

4. The coal chemical industry wastewater treatment device according to claim 1, wherein the hand ring (131) is a stainless steel ring with an internally threaded pipe integrally formed at the lower part.

5. The coal chemical industry wastewater treatment device as set forth in claim 1, wherein the fixing pipe (133) is screwed in a threaded hole formed in the middle of the inside of the cleaning cover (2) in the longitudinal direction.

6. The coal chemical wastewater treatment apparatus according to claim 1, wherein the impurity filtering net (135) is a rectangular stainless steel filtering net.

7. The coal chemical wastewater treatment apparatus according to claim 1, wherein the mounting bases (136) are respectively bolted to the front and rear sides of the left and right walls inside the primary treatment hopper (3).

8. The coal chemical wastewater treatment apparatus according to claim 2, wherein the removal sleeve (143) is bolted to the rotary shaft (144).

9. The coal chemical wastewater treatment apparatus according to claim 2, wherein the left end of the rotary shaft (144) is keyed on the right end inside the sleeve coupling (7).

10. The coal chemical industry wastewater treatment device as set forth in claim 2, characterized in that the mounting seat (146) is longitudinally bolted to the middle position of the right wall inside the treatment tank (4).