CN217437969U - Magnetic coagulation sewage treatment device - Google Patents

Abstract

The utility model discloses a magnetism thoughtlessly congeals sewage treatment plant, including helping the device that congeals, the device congeals, the coagulation basin, the sedimentation tank, dissolve out wadding machine and magnetism and retrieve the machine, help the discharge gate of congealing device and coagulation device all with the coagulation basin intercommunication, the upper end of coagulation basin is provided with the inlet tube, the lower extreme of coagulation basin is provided with outlet pipe b, outlet pipe b's export and sedimentation tank are connected, the bottom of sedimentation tank is provided with the mud fill, the bottom of mud fill is provided with the mud pipe, the export of mud pipe and the entry linkage of magnetic mud pump an, the entry linkage of pipeline an and separating wadding machine is passed through in the export of magnetic mud pump an, the entry linkage of pipeline b and magnetism retrieval machine is passed through in the export of separating wadding machine, the magnetism export of magnetism retrieval machine is passed through the magnetism retrieval pipe and is connected with the coagulation basin. Through leading-in coagulating basin with the medicament in helping with congealing device and the coagulating device, through coagulating basin extension magnetic seed and the contact time of sewage, guaranteed that the floc fully forms to the sedimentation tank of being convenient for deposits the floc, has guaranteed purifying effect.

Description

Magnetic coagulation sewage treatment device

Technical Field

The utility model relates to a sewage treatment field, especially a sewage treatment plant is thoughtlessly congealed to magnetism.

Background

Sewage treatment is a process of purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people. At present, the sewage quantity in many cities increases rapidly and exceeds the sewage treatment scale, the traditional biological sewage treatment plant has a long construction period, so that the sewage locally has the condition that the sewage cannot be conveyed to the sewage treatment plant and is directly discharged to rivers, serious pollution is caused to river water bodies, magnetic coagulation utilizes magnetic powder as a medium and is combined with a magnetic separation technology, respective advantages are fully exerted, and the biological sewage treatment plant has wide application prospects in water supply pretreatment, municipal sewage primary treatment and advanced treatment.

The existing magnetic coagulation technical equipment also has certain defects, for example, the contact time of magnetic seeds and sewage is short, so that the flocs are insufficiently formed, the water quality is not thoroughly purified, and the existing sedimentation tank has short sedimentation time and cannot sufficiently separate the flocs.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the shortcoming of prior art, provide a sewage treatment plant is thoughtlessly congealed to magnetism.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a magnetism thoughtlessly congeals sewage treatment plant, including helping the device with fixed attention, the coagulation device, the coagulating basin, the sedimentation tank, decongestion machine and magnetism retrieve the machine, the discharge gate of helping the device with the coagulation device all communicates with the coagulating basin, the upper end of coagulating basin is provided with the inlet tube, the lower extreme of coagulating basin is provided with outlet pipe b, outlet pipe b's export is connected with the sedimentation tank, the bottom of sedimentation tank is provided with the mud fill, the bottom of mud fill is provided with the mud pipe, the export of mud pipe and the entry linkage of magnetic mud pump a, the export of magnetic mud pump a passes through pipeline a and the entry linkage of decongestion machine, the export of decongestion machine passes through pipeline b and the entry linkage of magnetism retrieval machine, the magnetism export of magnetism retrieval machine passes through magnetism retrieval pipe and is connected with the coagulating basin, the export of magnetism retrieval machine is connected with mud pipe b.

Preferably, the upper end of coagulating basin is provided with the mounting panel, the lower surface mounting of mounting panel has a plurality of baffles, the baffle is also installed to the bottom in coagulating basin, coagulating basin is intake and is divided into the weir to the play water direction in proper order by the baffle, the flash mixed reaction district, magnetic medium mixes reaction zone and flocculation reaction district, the flash mixed reaction district, all be provided with agitating unit in magnetic medium mixes reaction zone and the flocculation reaction district, the discharge end and the weir intercommunication of intaking of coagulating device, the discharge end and the magnetic medium of magnetism recovery pipe mix reaction district intercommunication, the discharge end and the flocculation reaction district intercommunication of helping the device of congealing.

Preferably, install a plurality of motors on the mounting panel, agitating unit includes pivot and stirring vane, and the power take off end of motor is connected with the pivot that corresponds, and the tip of pivot is provided with stirring vane.

Preferably, the upstream end of the baffle is provided with a notch.

Preferably, the coagulation aiding device comprises a coagulation aiding box and a pump a, the coagulation aiding box is connected with an inlet of the pump a through a pipeline, and an outlet of the pump a is communicated with the flocculation reaction zone through a pipeline c.

Preferably, the coagulation device comprises a coagulation tank and a pump b, the coagulation tank is connected with an inlet of the pump b through a pipeline, and an outlet of the pump b is communicated with the water inlet weir through a pipeline d.

Preferably, a water collecting area, a separation area and a mud scraping area are arranged in the sedimentation tank, the separation area is located between the water collecting area and the mud scraping area, a buffer tank is arranged on one side of the sedimentation tank, a water outlet channel is arranged at the other end of the sedimentation tank, the water outlet end of the water outlet pipe b is communicated with the upper portion of the buffer tank, a water inlet hole is formed in the side wall of the sedimentation tank and communicated with the buffer tank, and the water outlet end of the water collecting area is communicated with the water outlet channel.

Preferably, be provided with the installation pole in the disengagement zone, the both ends of installation pole are installed on the inside wall of sedimentation tank, and the installation pole distributes about being, and installs a plurality of pipe chute between the installation pole, and the contained angle between pipe chute and the lower extreme installation pole is 60, and the cross-section of pipe chute is the hexagon.

Preferably, a water collecting tank is obliquely arranged in the water collecting area, two ends of the water collecting tank are arranged on the side wall of the sedimentation tank, the water outlet end of the water collecting tank is communicated with the water outlet channel, and a plurality of through holes are formed in the upper ends of two side walls of the water collecting tank.

Preferably, the top of sedimentation tank is provided with mounting panel b, is provided with motor b on the mounting panel b, and motor b's power take off end is connected with pivot b, and pivot b's bottom is provided with scrapes the mud fill, scrapes the mud fill and is used for scraping mud into the mud fill in, and the side of mud fill is provided with back the mud pipe, is provided with the valve on the back mud pipe, and the discharge end of back the mud pipe is connected with the pan feeding end of backward flow magnetic mud pump, and the discharge end of backward flow magnetic mud pump passes through pipeline e and magnetic medium mixed reaction district intercommunication.

The utility model has the advantages of it is following: the utility model discloses a to help in leading-in coagulating basin of medicament in congealing device and the coagulating device, through the contact time of coagulating basin extension magnetic seed and sewage, guaranteed that the floc fully forms to the sedimentation tank of being convenient for deposits the floc, has guaranteed purifying effect.

Drawings

FIG. 1 is a schematic view of a sewage treatment apparatus;

FIG. 2 is a schematic structural view of a coagulation basin;

FIG. 3 is a schematic structural view of the upper end of the sedimentation tank;

FIG. 4 is a schematic structural view of the lower end of the sedimentation tank;

in the figure, 10-water outlet pipe b, 11-sedimentation tank, 12-water outlet channel, 13-sludge discharge pipe, 21-sludge scraping bucket, 22-sludge bucket, 23-sludge return pipe, 24-motor b, 25-water collecting tank, 26-mounting plate, 27-through hole, 28-inclined pipe, 29-separation area, 30-mounting rod, 31-buffer tank, 32-water inlet hole, 33-rotating shaft b, 101-coagulation assisting tank, 102-coagulation assisting tank, 103-pumping a, 104-pumping b, 105-coagulation assisting device, 106-coagulation assisting device, 107-pipeline d, 108-coagulation tank, 109-magnetic recovery pipe, 110-pipeline c, 111-pipeline e, 112-reflux magnetic sludge pump, 113-sludge discharge pipe b, 114-magnetic recovery machine, 115-pipeline b, 116-deflocculating machine, 117-pipeline a, 119-valve, 120-magnetic mud pump a, 121-water inlet weir, 122-water inlet pipe, 123-motor, 126-rapid mixing reaction zone, 127-baffle, 128-magnetic medium mixing reaction zone, 129-rotating shaft, 130-stirring blade, 131-notch, 132-flocculation reaction zone.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this embodiment, as shown in fig. 1, a magnetic coagulation sewage treatment device comprises a coagulation aiding device 106, a coagulation device 105, and a coagulation tank 108, the device comprises a sedimentation tank 11, a deflocculating machine 116 and a magnetic recycling machine 114, discharge outlets of a coagulation assisting device 106 and a coagulation assisting device 105 are communicated with the coagulation tank 108, a water inlet pipe 122 is arranged at the upper end of the coagulation tank 108, a water outlet pipe b10 is arranged at the lower end of the coagulation tank 108, an outlet of the water outlet pipe b10 is connected with the sedimentation tank 11, a mud bucket 22 is arranged at the bottom of the sedimentation tank 11, a mud discharge pipe 13 is arranged at the bottom of the mud bucket 22, an outlet of the mud discharge pipe 13 is connected with an inlet of a magnetic mud pump a120, an outlet of the magnetic mud pump a120 is connected with an inlet of the deflocculating machine 116 through a pipeline a117, an outlet of the deflocculating machine 116 is connected with an inlet of the magnetic recycling machine 114 through a pipeline b115, a magnetic outlet of the magnetic recycling machine 114 is connected with the coagulation tank 108 through a magnetic recycling pipe 109, and an outlet of the magnetic recycling machine 114 is connected with a mud discharge pipe b 113. The inlet tube 122 is with the leading-in coagulation basin 108 of sewage, simultaneously through the leading-in coagulation basin 108 of the medicament with in helping the coagulation device 106 and the coagulation device 105, through the contact time of coagulation basin 108 extension magnetic seed and sewage, guaranteed that the floc fully forms to be convenient for sedimentation tank 11 deposits the floc, has guaranteed purifying effect.

In this embodiment, as shown in fig. 2, a mounting plate is disposed at the upper end of the coagulation basin 108, a plurality of baffles 127 are mounted on the lower surface of the mounting plate, the baffles 127 are also mounted at the bottom of the coagulation basin 108, a gap 131 is formed at the upstream end of each baffle 127, and the gap 131 mainly functions to guide flow. The coagulation basin 108 is intake to the water outlet direction and is divided into weir 121, flash mixed reaction area 126, magnetic medium mixed reaction area 128 and flocculation reaction area 132 in proper order by baffle 127, flash mixed reaction area 126, all be provided with agitating unit in magnetic medium mixed reaction area 128 and the flocculation reaction area 132, preferably, install a plurality of motors 123 on the mounting panel, agitating unit includes pivot 129 and stirring vane 130, the power take off end of motor 123 is connected with corresponding pivot 129, the tip of pivot 129 is provided with stirring vane 130. The discharge end of the coagulation device 105 is communicated with the water inlet weir 121, the discharge end of the magnetic recovery pipe 109 is communicated with the magnetic medium mixing reaction zone 128, and the discharge end of the coagulation assisting device 106 is communicated with the flocculation reaction zone 132. Further, the coagulation aiding device 106 comprises a coagulation aiding box 101 and a pump a103, wherein the coagulation aiding box 101 is connected with an inlet of the pump a103 through a pipeline, and an outlet of the pump a103 is communicated with the flocculation reaction zone 132 through a pipeline c 110. Still further, the coagulation device 105 comprises a coagulation tank 102 and a pump b104, wherein the coagulation tank 102 is connected with an inlet of the pump b104 through a pipeline, and an outlet of the pump b104 is communicated with the water inlet weir 121 through a pipeline d 107. Specifically, the baffles 127 on the mounting plate and the baffles 127 at the bottom of the coagulation tank 108 are installed in a staggered manner, after sewage enters the coagulation tank 108 through the water inlet pipe 122, the water inlet weir 121 plays a certain buffering role, at this time, a coagulant in the coagulation tank 102 is pumped out through the pump b104, the coagulant is pumped into the water inlet weir 121 through the pipeline d107 to be mixed with the sewage, mixed water sequentially flows through the rapid mixing reaction region 128, the magnetic medium mixing reaction region 128 and the flocculation reaction region 132, when the mixed water flows through the magnetic medium mixing reaction region 128, magnetic seeds are added into the magnetic medium mixing reaction region 128 as a nucleation medium, when the mixed water flows through the flocculation reaction region 132, a coagulant aid in the coagulation tank 101 is pumped out through the pump a103, and then is introduced into the flocculation reaction region 132 through the pipeline c 110; through regional interior motor 123 drive pivot 129 rotation separately, thereby drive stirring vane 130 and rotate, and then stir the mixture to mixed water liquid, magnetic seed and sewage intensive mixing have been guaranteed, promote the floc formation, improve the ability of catching the pollutant, the floc has magnetism this moment, and because baffle 127 on the mounting panel and the baffle 127 dislocation mounting of coagulating basin 108 bottom, mixed water liquid is equivalent to snakelike flow in coagulating basin 108, thereby can further increase the contact time of magnetic seed and sewage, guaranteed that the floc intensive formation.

In the present embodiment, as shown in fig. 3 and 4, a water collecting region, a separating region 29 and a mud scraping region are disposed in the sedimentation tank 11, the separating region 29 is located between the water collecting region and the mud scraping region, a buffer tank 31 is disposed on one side of the sedimentation tank 11, an outlet channel 12 is disposed at the other end of the sedimentation tank 11, an outlet end of the outlet pipe b10 is communicated with an upper portion of the buffer tank 31, an inlet hole 32 is formed in a side wall of the sedimentation tank 11, the inlet hole 32 is communicated with the buffer tank 31, and an outlet end of the water collecting region is communicated with the outlet channel 12. Specifically, the mixed water liquid is guided into the buffer tank 31 through the water outlet pipe b10, and then enters the sedimentation tank 11 through the water inlet hole 32, the floc density is high, the sedimentation speed is high, the solid-liquid separation can be accelerated, the water and the floc are separated by the separation zone 29, the floc is scraped into the mud bucket 22 by the mud scraping zone, and then is discharged out of the sedimentation tank 11 through the mud discharging pipe 13, the floc in the mud discharging pipe 13 is sent into the deflocculating machine 116 by the magnetic mud pump a to be crushed, and then enters the magnetic recycling machine 114 to recycle the magnetic seeds, and the recycled magnetic seeds are discharged into the magnetic medium mixed reaction zone 128 through the magnetic recycling pipe 109 for recycling, so that the magnetic seed consumption can be saved, and the water after the sedimentation is collected by the water collecting zone.

Further, be provided with installation pole 30 in the disengagement zone 29, the both ends of installation pole 30 are installed on the inside wall of sedimentation tank 11, and installation pole 30 distributes from top to bottom, and installs a plurality of pipe chute 28 between the installation pole 30, and the contained angle between pipe chute 28 and the lower extreme installation pole 30 is 60, and the cross-section of pipe chute 28 is the hexagon. Specifically speaking, the flow direction of mixed rivers is from up down, the floc in the mixed rivers can drop to the chamber end down because of the dead weight, will form the incorgruous flow like this, when mixed rivers pass through pipe chute 28, the small floc that is difficult for settling can deposit on pipe chute 28, water rises along pipe chute 28 and flows, the floc that separates is along pipe chute 28 cunning to the bottom of the pool under the action of gravity, in this embodiment, the contained angle between pipe chute 28 and the lower extreme installation pole 30 is 60 and can guarantees that the floc of settling on pipe chute 28 can slide to the chamber end smoothly, thereby avoid silting up on pipe chute 28, the cross-section of pipe chute 28 can increase effective area of settling for the hexagon, guarantee the effect of settling.

Further, a water collecting tank 25 is obliquely arranged in the water collecting area, two ends of the water collecting tank 25 are installed on the side wall of the sedimentation tank 11, the water outlet end of the water collecting tank 25 is communicated with the water outlet channel 12, and a plurality of through holes 27 are formed in the upper ends of two side walls of the water collecting tank 25. Preferably, the water collection sump 28 is installed obliquely in the water discharge direction. Specifically, after the sewage is separated by the separation area 29, the water enters the water collection tank 25 through the through holes 27 on the two side walls of the water collection tank 25, and since the water collection tank 25 is installed obliquely in the water outlet direction, the water flows in the water collection tank 25 and is guided into the water outlet channel 12 to wait for the water to be discharged.

In this embodiment, a mounting plate b26 is arranged above the sedimentation tank 11, a motor b24 is arranged on the mounting plate b26, a power output end of the motor b24 is connected with a rotating shaft b33, a sludge scraping hopper 21 is arranged at the bottom of the rotating shaft b33, the sludge scraping hopper 21 is used for scraping flocs into a sludge hopper 22, a sludge return pipe 23 is arranged on the side surface of the sludge hopper 22, a valve 119 is arranged on the sludge return pipe 23, a discharge end of the sludge return pipe 23 is connected with a feed end of a reflux magnetic sludge pump 112, and a discharge end of the reflux magnetic sludge pump 112 is communicated with a magnetic medium mixing reaction zone 128 through a pipeline e 111. Specifically, the motor b24 is started to drive the rotating shaft b33 to rotate, and then drive the mud scraping bucket 21 to rotate, in this embodiment, the mud scraping bucket 21 is the prior art, in order to ensure the cleaning efficiency, the bottom center of the sedimentation tank 11 is lower than the outer end of the bottom, so that the flocs can be conveniently scraped into the mud bucket 22, when part of the flocs needs to flow back into the coagulation tank 108, the operator opens the valve 119, starts the reflux magnetic mud pump 112 to pump the flocs in the mud bucket 22 into the mud return pipe 23, and then guides the flocs into the magnetic medium mixing reaction zone 128 through the pipe e111, which has the function that the flocs in the sedimentation tank 11 have certain cohesive property, increases the crystal nucleus, can increase the density of the flocs in the magnetic medium mixing reaction zone 128, thereby increasing the sedimentation speed, and simultaneously can increase the removal rate of sewage impurities, and can also reduce the adding amount of magnetic seeds.

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 (10)

1. The utility model provides a sewage treatment plant is thoughtlessly congealed to magnetism which characterized in that: including helping with congealing device (106), coagulation device (105), coagulating basin (108), sedimentation tank (11), decongestor (116) and magnetism and retrieving machine (114), help congeal device (106) with the discharge gate of coagulation device (105) all with coagulating basin (108) intercommunication, the upper end of coagulating basin (108) is provided with inlet tube (122), the lower extreme of coagulating basin (108) is provided with outlet pipe b (10), the export of outlet pipe b (10) with sedimentation tank (11) are connected, the bottom of sedimentation tank (11) is provided with mud bucket (22), the bottom of mud bucket (22) is provided with mud pipe (13), the export of mud pipe (13) and the entry linkage of magnetic mud pump a (120), the export of magnetic mud pump a (120) pass through pipeline a (117) with the entry linkage of decongestor (116), the export of decongestor (116) pass through pipeline b (115) with the entry linkage of magnetism retrieves machine (114), the magnetic outlet of the magnetic recovery machine (114) is connected with the coagulation tank (108) through a magnetic recovery pipe (109), and the outlet of the magnetic recovery machine (114) is connected with a sludge discharge pipe b (113).

2. The sewage treatment plant of claim 1, wherein: the upper end of the coagulation tank (108) is provided with a mounting plate, the lower surface of the mounting plate is provided with a plurality of baffles (127), the baffle (127) is also arranged at the bottom of the coagulation tank (108), the coagulation tank (108) is divided into a water inlet weir (121), a rapid mixing reaction zone (126), a magnetic medium mixing reaction zone (128) and a flocculation reaction zone (132) by the baffle (127) in sequence from the water inlet direction to the water outlet direction, stirring devices are arranged in the rapid mixing reaction zone (126), the magnetic medium mixing reaction zone (128) and the flocculation reaction zone (132), the discharge end of the coagulation device (105) is communicated with the water inlet weir (121), the discharge end of the magnetic recovery pipe (109) is communicated with the magnetic medium mixing reaction zone (128), the discharge end of the coagulation aid device (106) is communicated with the flocculation reaction zone (132).

3. The sewage treatment plant is thoughtlessly congealed to magnetism of claim 2, characterized in that: install a plurality of motors (123) on the mounting panel, agitating unit includes pivot (129) and stirring vane (130), the power take off end of motor (123) with correspond pivot (129) are connected, the tip of pivot (129) is provided with stirring vane (130).

4. The sewage treatment plant of claim 3, wherein: the upstream end of the baffle (127) is provided with a gap (131).

5. The sewage treatment plant of claim 4, wherein: the coagulation aiding device (106) comprises a coagulation aiding box (101) and a pump a (103), wherein the coagulation aiding box (101) is connected with an inlet of the pump a (103) through a pipeline, and an outlet of the pump a (103) is communicated with the flocculation reaction zone (132) through a pipeline c (110).

6. The sewage treatment plant of claim 5, wherein: the coagulation device (105) comprises a coagulation tank (102) and a pump b (104), wherein the coagulation tank (102) is connected with an inlet of the pump b (104) through a pipeline, and an outlet of the pump b (104) is communicated with the water inlet weir (121) through a pipeline d (107).

7. The sewage treatment plant of claim 6, wherein: be provided with water catch bowl, disengagement zone (29) and scrape the mud district in sedimentation tank (11), disengagement zone (29) are located the water catch bowl with scrape between the mud district, just one side of sedimentation tank (11) is provided with buffer pool (31), the other end of sedimentation tank (11) is provided with out ditch (12), the play water end of outlet pipe b (10) with the upper portion intercommunication of buffer pool (31), set up inlet opening (32) on the lateral wall of sedimentation tank (11), inlet opening (32) with buffer pool (31) intercommunication, the play water end of water catch bowl with go out ditch (12) intercommunication.

8. The sewage treatment plant of claim 7, wherein: be provided with installation pole (30) in disengagement zone (29), install the both ends of installation pole (30) on the inside wall of sedimentation tank (11), distribution about installation pole (30) are, just install a plurality of pipe chute (28) between installation pole (30), pipe chute (28) and lower extreme contained angle between installation pole (30) is 60, just the cross-section of pipe chute (28) is the hexagon.

9. The sewage treatment plant of claim 8, wherein: the water collecting area is internally provided with a water collecting tank (25) in an inclined mode, two ends of the water collecting tank (25) are installed on the side wall of the sedimentation tank (11), the water outlet end of the water collecting tank (25) is communicated with the water outlet channel (12), and a plurality of through holes (27) are formed in the upper ends of the two side walls of the water collecting tank (25).

10. The sewage treatment plant of claim 9, wherein: the top of sedimentation tank (11) is provided with mounting panel b (26), be provided with motor b (24) on mounting panel b (26), the power take off end and the pivot b (33) of motor b (24) are connected, the bottom of pivot b (33) is provided with scrapes mud bucket (21), it is used for scraping mud into to scrape mud bucket (21) in mud bucket (22), the side of mud bucket (22) is provided with back mud pipe (23), be provided with valve (119) on back mud pipe (23), the discharge end of back mud pipe (23) is connected with the pan feeding end of backward flow magnetic mud pump (112), the discharge end of backward flow magnetic mud pump (112) pass through pipeline e (111) with magnetic medium hybrid reaction district (128) intercommunication.

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