CN113072204A

CN113072204A - Sewage treatment equipment with automatic slag removal function and sewage treatment method

Info

Publication number: CN113072204A
Application number: CN202110237778.4A
Authority: CN
Inventors: 罗俊杰
Original assignee: Mihe Nanjing Electronic Technology Co ltd
Current assignee: Mihe Nanjing Electronic Technology Co ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-07-06

Abstract

The invention discloses a sewage treatment device with an automatic slag removal function, which comprises a treatment box and a water storage box, wherein the filter box is fixedly arranged on one side of the filter box, the water storage box is fixedly arranged on one side of the treatment box, a rectangular screen plate is fixedly arranged at the top of the inner wall of the filter box, two first motors are symmetrically and fixedly arranged on one side of the filter box, which faces the water storage box, a filter screen is fixedly arranged in the rectangular screen plate, the two first motors are both connected with threaded shafts movably arranged in the filter box through motor shafts, roller bearings fixedly arranged on the inner wall of the filter box are movably arranged on the outer edge surfaces of one ends of the two threaded shafts, which are far away from the first motors, and rectangular plates are in threaded fit connection between the outer edge surfaces of the two threaded shafts, and the pungent smell generated in the sewage treatment process is convenient to adsorb, and the practicability is strong.

Description

Sewage treatment equipment with automatic slag removal function and sewage treatment method

Technical Field

The invention belongs to the technical field of sewage treatment, and particularly relates to sewage treatment equipment with an automatic slag removal function.

Background

Sewage is the effluent from life and production that is contaminated to some extent. The water which loses the original use function is called sewage for short. Mainly domestic used water, and sewage can be defined as waste-laden liquids or water mixed with ground water, surface water, snow storms, etc. discharged from residential, institutional, commercial or industrial areas from the viewpoint of the source of the sewage. Sewage is classified into many categories, and there are many techniques and processes for reducing the environmental impact of sewage accordingly.

Current sewage treatment device uses the filter screen to filter solid impurity etc. in sewage, and along with the increase of time, the impurity on filter screen surface piles up, need regularly stop equipment and manual clear up out equipment with impurity, influences sewage treatment efficiency, and current sewage treatment device carries out purification treatment through adding reagent, can produce pungent smell among the purification process, influences that the staff's is healthy.

Disclosure of Invention

The invention aims to provide sewage treatment equipment with an automatic slag removal function, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a sewage treatment device with an automatic slag removal function comprises a treatment box with a filter box fixedly arranged on one side of the filter box and a water storage tank fixedly arranged on one side of the treatment box;

the top of the inner wall of the filter box is fixedly provided with a rectangular screen plate, one side of the filter box, which faces the water storage tank, is symmetrically and fixedly provided with two first motors, a filter screen is fixedly arranged in the rectangular screen plate, the two first motors are both connected with threaded shafts movably arranged in the filter box through motor shafts, the outer edge surfaces of one ends, far away from the first motors, of the two threaded shafts are both movably provided with roller bearings fixedly arranged on the inner wall of the filter box, a rectangular plate is connected between the outer edge surfaces of the two threaded shafts in a threaded fit manner, the bottom end, far away from the first motors, of one side of the rectangular plate is provided with a material pushing plate, and the two sides of the rectangular plate are both fixedly provided with brushes abutting against;

handle the case and keep away from the one side top of rose box and offer the rectangular channel that supplies the fixed setting of odour removal device, and handle the incasement and seted up the sediment storehouse, odour removal device is including removing the flavor case, remove one side fixed mounting of flavor case orientation in the sediment storehouse and have the protection network, and remove the fixed three mounting bracket that is provided with of equidistance on the inner wall of flavor case, three equal fixed motor that is provided with in the mounting bracket, motor shaft one end fixedly connected with pivot of motor, fixed mounting has the flabellum on the outer fringe face of pivot, it is provided with the active carbon package to remove the flavor incas.

Preferably, the top of deposiing the storehouse is provided with both ends and fixes the regulating plate that welds on handling the incasement wall, handle one side top that the storage water tank was kept away from to the case fixed mounting placed in the middle there is the second motor, logical groove has been seted up placed in the middle in the regulating plate, the second motor is connected with the activity through the motor shaft and sets up in logical threaded rod of inslot.

Preferably, a roller bearing fixedly installed in the adjusting plate is movably arranged on an outer edge surface of one end, far away from the second motor, of the threaded rod, a moving block is installed on the outer edge surface of the threaded rod in a threaded fit mode, and a rectangular frame arranged outside the adjusting plate in a sliding mode is fixedly welded on the upper end face of the moving block.

Preferably, the lower terminal surface of rectangle frame fixed mounting placed in the middle has the third motor, the third motor is connected with the circle axle through the motor shaft, is the annular array on the outer fringe face of circle axle and constructs four stirring leaves that set up in deposiing the storehouse.

Preferably, one side top fixed mounting that first motor was kept away from to the rose box has the collection box, and the rose box has seted up two switch-on towards one side inner wall bottom symmetry of handling the case and has gone into the through-hole that deposits the storehouse and supply transmission pipe fixed mounting, the top of collection box articulates through the hinge has the case lid, and the collection box is seted up flutedly towards one side of rose box, the filter box is seted up the groove that runs through of switch-on recess towards one side top of collection box.

Preferably, the bottom end of one side of the treatment box far away from the filter box is symmetrically provided with two round holes for fixedly installing the sewage discharge pipes, and the outer edge surfaces of the sewage discharge pipes are fixedly provided with electromagnetic valves.

Preferably, one side bottom symmetry fixed mounting that the case is kept away from the rose box is handled has two fourth motors, two the fourth motor all is connected with the activity through the motor shaft and sets up the lead screw in precipitating the storehouse, two screw-thread fit is connected with the curb plate between the outer fringe face of lead screw, the inner wall both sides of case are handled to the both ends butt of curb plate, and the bottom fixed mounting of curb plate has the butt to handle scraping flitch of incasement wall bottom.

Preferably, the storage water tank has a water pump towards one side inner wall top fixed mounting who handles the case, and the storage water tank keeps away from one side bottom symmetry that handles the case and sets up two supply and drainage pipe fixed mounting's sealed hole, set up the reservoir in the storage water tank, the one end of water pump is connected with the switch-on and deposits the water intaking return bend in the storehouse, and the other end is connected with the outlet pipe that sets up in the reservoir.

The invention has the technical effects and advantages that: the sewage treatment equipment with the automatic slag removal function has the advantages that due to the arrangement of the first motors, the threaded shafts, the rectangular plates and the material pushing plates, the two first motors can be started simultaneously, so that the two threaded shafts synchronously rotate in the same direction, the rectangular plates move, solid impurities on the surfaces of the filter screens are pushed to move, and the solid impurities enter the recovery box for storage through the through grooves and the grooves, the equipment does not need to be stopped for impurity cleaning, and the sewage treatment efficiency is improved conveniently; thanks to the arrangement of the rotating shaft, the fan blades, the motor and the activated carbon bag, the motor can be started, so that the rotating shaft drives the fan blades to rotate, the irritant gas enters the odor removal box through the protective net, and the activated carbon bag adsorbs the irritant gas, thereby avoiding the direct discharge of the gas from affecting the body health of workers; benefit from the setting of second motor, threaded rod, movable block and rectangle frame, can start the second motor for the threaded rod rotates and drives the movable block removal, thereby makes the rectangle frame remove, is convenient for adjust the position of stirring leaf in deposiing the storehouse, promotes the mixing rate of reagent and sewage, and then promotes the treatment effect of sewage.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the odor elimination device of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 1 in accordance with the present invention;

FIG. 4 is an enlarged schematic view of the structure of FIG. 1 at B in accordance with the present invention;

FIG. 5 is an enlarged view of the structure of FIG. 1 at C according to the present invention.

In the figure: 1 filter tank, 101 transmission pipe, 2 treatment box, 201 precipitation storehouse, 3 storage water tanks, 301 storage water storehouse, 302 drain pipe, 4 rectangle otter board, 401 filter screen, 5 first motor, 501 threaded shaft, 502 rectangular plate, 6 scraping plate, 601 brush, 7 collection box, 8 regulating plates, 801 logical groove, 9 second motor, threaded

rod

901, 902 movable block, 10 rectangle frame, 11 third motor, 1101 stirring leaf, 12 odour removal device, 13 remove 1401 case, 1301 protection network, 14 mounting bracket, the pivot, 1402 flabellum, 15 fourth motor, 1501 lead screw, 1502 curb plate, 16 blow off pipe, 17 water pump, 1701 water intaking return bend, 1702 outlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless otherwise indicated, all references to up, down, left, right, front, back, inner and outer directions herein are to be interpreted as referring to up, down, left, right, front, back, inner and outer directions in the drawings to which the invention is directed.

The invention provides sewage treatment equipment with an automatic slag removal function, which comprises a filter box 1, a treatment box 2 and a water storage tank 3, wherein the filter box 1 is fixedly arranged on one side of the filter box 1;

the top of the inner wall of the filter box 1 is fixedly provided with a rectangular screen plate 4, one side of the filter box 1 facing the water storage tank 3 is symmetrically and fixedly provided with two first motors 5, a filter screen 401 is fixedly arranged in the rectangular screen plate 4, the two first motors 5 are both connected with threaded shafts 501 movably arranged in the filter box 1 through motor shafts, the outer edge surfaces of one ends, far away from the first motors 5, of the two threaded shafts 501 are both movably provided with roller bearings fixedly arranged on the inner wall of the filter box 1, the outer edge surfaces of the two threaded shafts 501 are in threaded fit connection with a rectangular plate 502, the bottom end, far away from the first motor 5, of the rectangular plate 502 is provided with a material pushing plate 6, the two sides of the rectangular plate 502 are both fixedly provided with brushes 601 abutted against the inner wall of the filter box 1, and the two first motors 5 can be started simultaneously due to the arrangement of the first motors 5, the threaded shafts 501, the rectangular plate 502 and the material, the two threaded shafts 501 synchronously rotate in the same direction, so that the rectangular plate 502 moves to push solid impurities on the surface of the filter screen 401 to move, and the solid impurities enter the recovery box 7 through the through grooves and the grooves for storage, the equipment does not need to be stopped for impurity cleaning, and the sewage treatment efficiency is improved conveniently;

the top of one side of the processing box 2, which is far away from the filter box 1, is provided with a rectangular groove for fixing the odor removal device 12, the processing box 2 is internally provided with a precipitation bin 201, the odor removal device 12 comprises an odor removal box 13, one side of the odor removal box 13, which faces the precipitation bin 201, is fixedly provided with a protective net 1301, the inner wall of the odor removal box 13 is fixedly provided with three mounting frames 14 at equal intervals, the three mounting frames 14 are internally and fixedly provided with motors, one end of a motor shaft of each motor is fixedly connected with a rotating shaft 1401, the outer edge surface of the rotating shaft 1401 is fixedly provided with fan blades 1402, the odor removal box 13 is internally provided with an activated carbon bag, and due to the arrangement of the rotating shaft 1401, the fan blades 1402, the motors and the activated carbon bag, the rotating shaft 1401 drives the fan blades 1402 to rotate, so that irritant gas enters the filtering box, the direct discharge of gas is avoided to influence the physical health of workers.

Specifically, the top of deposiing storehouse 201 is provided with both ends and fixes the regulating plate 8 that welds on handling 2 inner walls of the case, handle one side top that case 2 kept away from storage water tank 3 fixed mounting placed in the middle there is second motor 9, logical groove 801 has been seted up between the middle in regulating plate 8, second motor 9 is connected with the activity through the motor shaft and sets up the threaded rod 901 that leads to in groove 801.

Specifically, a roller bearing fixedly installed in the adjusting plate 8 is movably arranged on an outer edge surface of one end, away from the second motor 9, of the threaded rod 901, a moving block 902 is installed on the outer edge surface of the threaded rod 901 in a threaded fit mode, a rectangular frame 10 which is arranged outside the adjusting plate 8 in a sliding mode is fixedly welded to the upper end surface of the moving block 902, the second motor 9 can be started thanks to the arrangement of the second motor 9, the threaded rod 901, the moving block 902 and the rectangular frame 10, the threaded rod 901 rotates to drive the moving block 902 to move, the rectangular frame 10 moves, the position of the stirring blade 1101 in the settling bin 201 is convenient to adjust, the mixing rate of a reagent and sewage is improved, and the sewage treatment effect is further improved.

Specifically, the lower terminal surface of rectangle frame 10 fixed mounting placed in the middle has third motor 11, third motor 11 is connected with the circle axle through the motor shaft, is the annular array on the outer fringe face of circle axle and constructs four stirring leaves 1101 that set up in settling the storehouse 201 (during the concrete implementation, can start third motor 11 for stirring leaves 1101 rotates, realizes the mixture of reagent and sewage).

Specifically, one side top fixed mounting that first motor 5 was kept away from to rose box 1 has collection box 7, and rose box 1 has seted up two switch-ons towards one side inner wall bottom symmetry of handling case 2 and has gone into precipitation bin 201 and supply transmission pipe 101 fixed mounting's through-hole, the top of collection box 7 articulates through the hinge has the case lid (when specifically implementing, can overturn and open the case lid, can get out the clearance to the solid impurity in the collection box 7), and collection box 7 sets up flutedly towards one side of rose box 1, the groove that runs through of switch-on recess is seted up towards one side top of collection box 7 to rose box 1.

Specifically, the bottom end of one side of the treatment box 2, which is far away from the filter box 1, is symmetrically provided with two circular holes for fixedly installing the sewage discharge pipe 16, and the outer edge surface of the sewage discharge pipe 16 is fixedly provided with an electromagnetic valve (during specific implementation, the electromagnetic valve can control the opening and closing of the sewage discharge pipe 16, and the model of the electromagnetic valve can be selected, but is not limited to JB/T4119-1991).

It is specific, handle one side bottom symmetry fixed mounting that rose box 1 was kept away from to case 2 and have two fourth motors 15, two fourth motor 15 all is connected with the activity through the motor shaft and sets up lead screw 1501 in deposiing the storehouse 201, two screw-thread fit is connected with curb plate 1502 between the outer fringe face of lead screw 1501, the inner wall both sides of case 2 are handled to the both ends butt of curb plate 1502, and the bottom fixed mounting of curb plate 1502 has the butt to handle the flitch of scraping of 2 inner wall bottoms of case (during the concrete implementation, can start fourth motor 15 for lead screw 1501 rotates and drives curb plate 1502 and remove, makes the sediment of deposiing storehouse 201 bottom discharge through blow off pipe 16, scrapes the flitch simultaneously and can hang down the sediment of attaching to in handling 2 inner wall bottoms).

Specifically, the storage water tank 3 has a water pump 17 towards one side inner wall top fixed mounting who handles case 2, and the storage water tank 3 keeps away from one side bottom symmetry that handles case 2 and has seted up two supply and drainage pipe 302 fixed mounting's sealed hole, water storage tank 301 has been seted up in the storage water tank 3, the one end of water pump 17 is connected with the water intaking return bend 1701 of putting into in precipitation storehouse 201, and the other end is connected with the outlet pipe 1702 that sets up in water storage tank 301 (during concrete implementation, can start water pump 17 for sewage after the completion of handling extracts to the water storage tank 301 in through water intaking return bend 1701, and accessible drain pipe 302 discharges water storage tank 301).

Working principle, this sewage treatment device with automatic slag removal function, during the use, can add sewage in the rose box 1, the solid impurity in the sewage is by filter screen 401 separation, can start two first motors 5 simultaneously, make two screw shafts 501 rotate in the same direction in step, thereby make the rectangular plate 502 remove, promote the solid impurity on filter screen 401 surface to remove, and get into the collection box 7 through running through groove and recess and store, the sewage after preliminary filtration passes through the transmission pipe 101 and enters into precipitation storehouse 201, can add sewage treatment reagent to precipitation storehouse 201 at this moment, and start third motor 11, make stirring leaf 1101 rotate, realize the mixture of reagent and sewage, start second motor 9 at this moment, make threaded rod 901 rotate and drive movable block 902 to move, thereby make rectangular frame 10 remove, be convenient for adjust the position of stirring leaf 1101 in precipitation storehouse 201, make the mixture of reagent and sewage more even, can close second motor 9 and third motor 11 after the completion of mixing, it makes the impurity in the sewage deposit to stew, can start water pump 17, make the sewage after the processing is accomplished extract to the reservoir 301 in through water intaking return bend 1701, open the solenoid valve and start fourth motor 15, make lead screw 1501 rotate and drive curb plate 1502 and remove, make the sediment of depositing 201 bottoms in storehouse through blow off pipe 16 discharge, this sewage treatment device with automatic slag removal function, and is rational in infrastructure, be convenient for clear up the solid impurity on filter screen surface, and be convenient for adsorb the pungent smell that produces among the sewage treatment process, therefore, the clothes hanger is strong in practicability.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A sewage treatment device with an automatic slag removal function comprises a filter box (1), a treatment box (2) fixedly arranged on one side of the filter box (1), and a water storage tank (3) fixedly arranged on one side of the treatment box (2);

the method is characterized in that: the top of the inner wall of the filter tank (1) is fixedly provided with a rectangular screen (4), and one side of the filter tank (1) facing the water storage tank (3) is symmetrically and fixedly provided with two first motors (5), a filter screen (401) is fixedly arranged in the rectangular screen plate (4), the two first motors (5) are respectively connected with a threaded shaft (501) which is movably arranged in the filter box (1) through a motor shaft, roller bearings which are fixedly arranged on the inner wall of the filter box (1) are respectively and movably arranged on the outer edge surfaces of one ends of the two threaded shafts (501) far away from the first motors (5), and the outer edge surfaces of the two threaded shafts (501) are in threaded fit connection with a rectangular plate (502), the bottom end of one side of the rectangular plate (502) far away from the first motor (5) is provided with a material pushing plate (6), and both sides of the rectangular plate (502) are fixedly provided with brushes (601) which are abutted against the inner wall of the filter box (1);

handle case (2) and keep away from the one side top of rose box (1) and offer the rectangular channel that supplies odor removing device (12) fixed setting, and seted up precipitation storehouse (201) in handling case (2), odor removing device (12) are including removing odor case (13), remove odor case (13) towards one side fixed mounting in precipitation storehouse (201) have protection network (1301), and remove the fixed three mounting bracket (14) that are provided with of equidistance on the inner wall of odor case (13), three all fixed being provided with the motor in mounting bracket (14), motor shaft one end fixedly connected with pivot (1401) of motor, fixed mounting has flabellum (1402) on the outer fringe face of pivot (1401), it is provided with the active carbon package in odor case (13).

2. The sewage treatment apparatus with the automatic slag removal function according to claim 1, wherein: deposit the top in storehouse (201) and be provided with both ends fixed welding regulating plate (8) on handling case (2) inner wall, handle one side top fixed mounting placed in the middle that case (2) kept away from storage water tank (3) and have second motor (9), logical groove (801) have been seted up between the middle in regulating plate (8), second motor (9) are connected with the activity through the motor shaft and set up threaded rod (901) in leading to groove (801).

3. The sewage treatment apparatus with the automatic slag removal function according to claim 2, wherein: the outer edge surface of one end, far away from the second motor (9), of the threaded rod (901) is movably provided with a roller bearing fixedly installed in the adjusting plate (8), the outer edge surface of the threaded rod (901) is provided with a moving block (902) in a threaded fit mode, and the upper end face of the moving block (902) is fixedly welded with a rectangular frame (10) which is arranged outside the adjusting plate (8) in a sliding mode.

4. The sewage treatment apparatus with the automatic slag removal function according to claim 3, wherein: the lower terminal surface of rectangle frame (10) fixed mounting placed in the middle has third motor (11), third motor (11) are connected with the circle axle through the motor shaft, are the annular array on the outer fringe face of circle axle and construct four stirring leaf (1101) that set up in settling bin (201).

5. The sewage treatment apparatus with the automatic slag removal function according to claim 1, wherein: one side top fixed mounting that first motor (5) were kept away from in rose box (1) has collection box (7), and rose box (1) has seted up two towards one side inner wall bottom symmetry of handling case (2) and has connect to let in to deposit storehouse (201) and supply transmission pipe (101) fixed mounting's through-hole, the top of collection box (7) articulates through the hinge has the case lid, and collection box (7) is seted up flutedly towards one side of rose box (1), the groove that runs through of switch-on recess is seted up towards one side top of collection box (7) in rose box (1).

6. The sewage treatment apparatus with the automatic slag removal function according to claim 1, wherein: the bottom end of one side of the treatment box (2) far away from the filter box (1) is symmetrically provided with two round holes for fixedly installing the sewage discharge pipes (16), and the outer edge surfaces of the sewage discharge pipes (16) are fixedly provided with electromagnetic valves.

7. The sewage treatment apparatus with the automatic slag removal function according to claim 6, wherein: handle one side bottom symmetry fixed mounting that rose box (1) was kept away from in case (2) and have two fourth motors (15), two fourth motor (15) all are connected with movable lead screw (1501) that set up in settling storehouse (201) through the motor shaft, two screw-thread fit is connected with curb plate (1502) between the outer fringe face of lead screw (1501), the inner wall both sides of case (2) are handled to the both ends butt of curb plate (1502), and the bottom fixed mounting of curb plate (1502) has the butt to handle the flitch of scraping of case (2) inner wall bottom.

8. The sewage treatment apparatus with the automatic slag removal function according to claim 1, wherein: storage water tank (3) have water pump (17) towards one side inner wall top fixed mounting who handles case (2), and storage water tank (3) keep away from one side bottom symmetry that handles case (2) and set up two water supply and drainage pipe (302) fixed mounting's sealed hole, water storage storehouse (301) have been seted up in storage water tank (3), the one end of water pump (17) is connected with and connects water intaking return bend (1701) that lets in settling bin (201), and the other end is connected with outlet pipe (1702) that sets up in water storage storehouse (301).

9. The sewage treatment apparatus with the automatic slag removal function according to claim 1, wherein: storage water tank (3) have water pump (17) towards one side inner wall top fixed mounting who handles case (2), and storage water tank (3) keep away from one side bottom symmetry that handles case (2) and set up two water supply and drainage pipe (302) fixed mounting's sealed hole, water storage storehouse (301) have been seted up in storage water tank (3), the one end of water pump (17) is connected with and connects water intaking return bend (1701) that lets in settling bin (201), and the other end is connected with outlet pipe (1702) that sets up in water storage storehouse (301).

10. A sewage treatment method of sewage treatment equipment with an automatic slag removal function is characterized in that: the sewage treatment equipment with the automatic slag removal function can add sewage into the filter box 1 when in use, solid impurities in the sewage are separated by the filter screen 401, two first motors 5 can be simultaneously started, two threaded shafts 501 synchronously rotate in the same direction, so that the rectangular plate 502 moves, solid impurities on the surface of the filter screen 401 are pushed to move and enter the recovery box 7 for storage through the through grooves and the grooves, the sewage after primary filtration enters the precipitation bin 201 through the transmission pipe 101, a sewage treatment reagent can be added into the precipitation bin 201 at the moment, the third motor 11 is started, the stirring blade 1101 rotates, the mixing of the reagent and the sewage is realized, the second motor 9 is started at the moment, the threaded rod 901 rotates to drive the moving block 902 to move, the rectangular frame 10 moves, the position of the stirring blade 1101 in the precipitation bin 201 is convenient to adjust, and the mixing of the reagent and the sewage is more uniform, can close second motor 9 and third motor 11 after the completion of mixing, it makes the impurity in the sewage deposit to stew, can start water pump 17, make the sewage after the processing is accomplished extract to the reservoir 301 in through water intaking return bend 1701, open the solenoid valve and start fourth motor 15, make lead screw 1501 rotate and drive curb plate 1502 and remove, make the sediment of depositing 201 bottoms in storehouse through blow off pipe 16 discharge, this sewage treatment device with automatic slag removal function, and is rational in infrastructure, be convenient for clear up the solid impurity on filter screen surface, and be convenient for adsorb the pungent smell that produces among the sewage treatment process, therefore, the clothes hanger is strong in practicability.