CN112279417A

CN112279417A - Sewage purification process

Info

Publication number: CN112279417A
Application number: CN202011261079.5A
Authority: CN
Inventors: 徐坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-01-29

Abstract

The invention relates to the field of sewage purification, in particular to a sewage purification process, which comprises the following steps: step one, sending sewage into a precipitation barrel for preliminary precipitation; step two, adding a porous adsorbent into a precipitation barrel, and simultaneously stirring for precipitation; aerating the sedimentation barrel by an air pump, stirring and adding an oxidant, a coagulant aid and a flocculating agent; step four, discharging the sewage out of the sedimentation tank after standing for a period of time, and performing osmotic filtration treatment to complete purification; step five, discharging the precipitate out of the precipitation barrel; also relates to a sewage purification device; comprises a sedimentation barrel, a stirring mechanism, a sediment pushing mechanism, an aeration mechanism, a discharge mechanism, a plugging mechanism, an air pump mechanism and a pesticide spreading mechanism.

Description

Sewage purification process

Technical Field

The invention relates to the field of sewage purification, in particular to a sewage purification process.

Background

Sewage, generally refers to effluent water from life and production that is contaminated to some extent. The sewage mainly comprises domestic sewage, industrial wastewater and initial rainwater. The main pollutants of the sewage include pathogen pollutants, oxygen-consuming pollutants, solid floating objects, solid particles and the like. A lot of solid sediment substances are generated in the sewage treatment process, the solid sediment substances are difficult to discharge out of the sewage treatment equipment, and the sediment discharge efficiency is low.

Disclosure of Invention

The invention aims to provide a sewage purification process which is convenient for discharging sediment and has high discharging efficiency.

The purpose of the invention is realized by the following technical scheme:

a process for purifying wastewater, comprising the steps of:

step one, sending sewage into a precipitation barrel for preliminary precipitation;

step two, adding a porous adsorbent into a precipitation barrel, and simultaneously stirring for precipitation;

aerating the sedimentation barrel by an air pump, stirring and adding an oxidant, a coagulant aid and a flocculating agent;

step four, discharging the sewage out of the sedimentation tank after standing for a period of time, and performing osmotic filtration treatment to complete purification;

step five, discharging the precipitate out of the precipitation barrel;

the sewage purification process also relates to a sewage purification device;

a sewage purification device include sedimentation bucket, rabbling mechanism, precipitate ejecting mechanism, aeration mechanism, discharge mechanism, shutoff mechanism, air pump mechanism and spill the medicine mechanism, rabbling mechanism fixed connection on the sedimentation bucket, precipitate ejecting mechanism rotate to be connected in the sedimentation bucket, aeration mechanism connect the lower extreme of sedimentation bucket and with precipitate ejecting mechanism through one-way bearing rotation be connected, discharge mechanism connect the lower extreme at the sedimentation bucket, shutoff mechanism sliding connection at the lower extreme of sedimentation bucket, air pump mechanism fixed connection on the sedimentation bucket and with aeration mechanism rotate to be connected, spill medicine mechanism connect on the rabbling mechanism.

The setting bucket include the cylinder pipe, the inlet tube, the drain pipe, the awl bobbin, lower connecting pipe, the motor mounting panel, the blowdown pipe chute, the semicircle chamber, the threaded rod connecting pipe, landing leg and the fixed pipe of center, the upper end of cylinder pipe is equipped with the inlet tube, the lower extreme of cylinder pipe is equipped with the drain pipe, the lower extreme fixedly connected with awl bobbin of cylinder pipe, lower connecting pipe fixed connection is at the lower extreme of awl bobbin, the lower extreme of blowdown pipe chute slope fixed connection connecting pipe under, motor mounting panel fixed connection is under on the connecting pipe, the lower extreme of blowdown pipe chute is equipped with the semicircle chamber, threaded rod connecting pipe fixed connection is at the up end of blowdown pipe chute, the lower terminal surface of fixed pipe fixed connection of center at the blowdown pipe chute, fixed pipe in center and cylinder pipe, awl bobbin and the coaxial setting of lower connecting pipe, the even fixedly connected with four.

Rabbling mechanism include upper cover plate, agitator motor, slide opening, (mixing) shaft, stirring board and fixed plate, upper cover plate fixed connection is in the upper end of drum pipe, agitator motor fixed connection on the upper cover plate, the upper end of (mixing) shaft rotate connect on the upper cover plate and with agitator motor output shaft fixed connection, the slide opening radially sets up on the upper cover plate, a plurality of stirring boards of fixedly connected with on the (mixing) shaft, fixed plate fixed connection is in the outer end of slide opening.

The sediment ejecting mechanism comprises a rotary circular plate, a cross connecting plate and a conical spiral plate, the rotary circular plate is fixedly connected to the outer end of the cross connecting plate, the rotary circular plate is fixedly connected to the upper end of the conical spiral plate, the rotary circular plate is rotatably connected to the lower end of the cylindrical pipe, the conical spiral plate is rotatably connected to the conical cylindrical pipe, and the conical spiral plate is in contact with the inner wall of the conical cylindrical pipe.

Aeration mechanism include aeration motor, the aeration connecting pipe, aeration stirring pipe and gas pocket, the upper end fixed connection of aeration connecting pipe is in the center of cross connecting plate, aeration stirring pipe is equipped with four, four even circumference fixed connection of aeration stirring pipe are in the upper end of aeration connecting pipe, the downside of four aeration stirring pipes all is equipped with a plurality of gas pockets, a plurality of gas pockets and aeration connecting pipe intercommunication, the lower extreme of aeration connecting pipe is rotated and is connected in central fixed tube, aeration motor fixed connection is on the motor mounting panel, the aeration motor is connected with the aeration connecting pipe transmission.

The discharge mechanism comprises a sewage discharging motor, a sewage discharging shaft, a sewage discharging roller and a sewage discharging plate, the sewage discharging shaft is fixedly connected to an output shaft of the sewage discharging motor, the sewage discharging roller is fixedly connected to the sewage discharging shaft, the sewage discharging roller is fixedly connected with the sewage discharging plates, the sewage discharging shaft is rotatably connected to the semicircular cavity, the sewage discharging plates are rotatably connected to the semicircular cavity, and the sewage discharging motor is fixedly connected to the semicircular cavity.

The plugging mechanism comprises a plugging plate, a threaded plate and an adjusting threaded rod, the threaded plate is fixedly connected to the plugging plate, the adjusting threaded rod is connected to the threaded plate through threads, the plugging plate is connected to the sewage inclined tube in a sliding mode, and the adjusting threaded rod is connected to the threaded rod connecting tube in a rotating mode.

The air pump mechanism comprises an air pump, an air pipe and a connecting frame, the air pipe is fixedly connected to the connecting frame, the lower end of the air pipe is rotatably connected to the lower end of the aeration connecting pipe, the upper end of the air pipe is connected with the air pump, the air pump is fixedly connected to the upper cover plate, and the connecting frame is fixedly connected to two of the supporting legs.

Spill medicine mechanism include cam, runner frame, explosive box, leak medicine board, traveller and spring, cam fixed connection is on the (mixing) shaft, explosive box sliding connection is in the slide opening, the both ends difference fixedly connected with runner frame and traveller of explosive box, leak the lower extreme of explosive box of medicine board fixed connection, the runner rotates to be connected on the runner frame, cam and runner rolling connection, the spring housing is established on the traveller, traveller sliding connection is on the fixed plate, the both ends of spring push up explosive box and fixed plate respectively tightly.

The invention has the beneficial effects that: the invention provides a sewage purification process which is convenient for discharging sediment and has high discharging efficiency.

Drawings

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

FIG. 2 is an overall cross-sectional schematic view of the present invention;

FIG. 3 is a schematic view of the construction of the settling tank of the present invention;

FIG. 4 is a schematic cross-sectional view of a settling tank of the present invention;

FIG. 5 is a first schematic structural diagram of a stirring mechanism of the present invention;

FIG. 6 is a schematic structural diagram of a second stirring mechanism of the present invention;

FIG. 7 is a schematic view showing the structure of the sediment ejection mechanism of the present invention;

FIG. 8 is a schematic structural view of an aeration mechanism according to the present invention;

FIG. 9 is a schematic view of the discharge mechanism of the present invention;

FIG. 10 is a schematic structural view of the plugging mechanism of the present invention;

FIG. 11 is a schematic structural view of the air pump mechanism of the present invention;

fig. 12 is a schematic structural view of the spreading mechanism of the present invention.

In the figure: a settling tank 1; a cylindrical tube 1-1; a water inlet pipe 1-2; 1-3 of a drain pipe; 1-4 of a cone tube; a lower connecting pipe 1-5; 1-6 of a motor mounting plate; 1-7 parts of a sewage discharge inclined pipe; 1-8 parts of a semicircular cavity; a threaded rod connecting pipe 1-9; 1-10 parts of supporting legs; 1-11 of a central fixed pipe; a stirring mechanism 2; an upper cover plate 2-1; 2-2 parts of a stirring motor; 2-3 of a slide hole; 2-4 of a stirring shaft; 2-5 of a stirring plate; fixing plates 2-6; a sediment ejection mechanism 3; rotating the circular plate 3-1; a cross connecting plate 3-2; 3-3 of a conical spiral plate; an aeration mechanism 4; 4-1 of an aeration motor; an aeration connecting pipe 4-2; 4-3 of an aeration stirring pipe; 4-4 of air holes; a discharge mechanism 5; a sewage discharge motor 5-1; 5-2 of a sewage draining shaft; 5-3 of a pollution discharge roller; 5-4 of a sewage draining plate; a plugging mechanism 6; a plugging plate 6-1; a thread plate 6-2; adjusting the threaded rod 6-3; an air pump mechanism 7; an air pump 7-1; 7-2 of an air pipe; a connecting frame 7-3; a pesticide spreading mechanism 8; a cam 8-1; 8-2 of a rotating wheel; 8-3 parts of a rotary frame; 8-4 of a medicine storage box; 8-5 parts of a medicine leakage plate; 8-6 parts of a sliding column; and 8-7 of a spring.

Detailed Description

The present invention is described in further detail below with reference to figures 1-12.

The first embodiment is as follows:

as shown in fig. 1 to 12, the object of the present invention is achieved by the following technical solutions:

a process for purifying wastewater, comprising the steps of:

step five, discharging the precipitate out of the precipitation barrel;

the sewage purification process also relates to a sewage purification device;

a sewage purification device include sedimentation bucket 1, rabbling mechanism 2, precipitate pushing mechanism 3, aeration equipment 4, discharge mechanism 5, shutoff mechanism 6, air pump mechanism 7 and

spreader

8, 2 fixed connection of rabbling mechanism on sedimentation bucket 1, precipitate pushing mechanism 3 rotate to be connected in sedimentation bucket 1, aeration equipment 4 connect at sedimentation bucket 1 the lower extreme and with precipitate pushing mechanism 3 through one-way bearing rotation be connected, discharge mechanism 5 connect the lower extreme at

sedimentation bucket

1, 6 sliding connection of shutoff mechanism at sedimentation bucket 1's lower extreme, air pump mechanism 7 fixed connection on sedimentation bucket 1 and with aeration equipment 4 rotate to be connected, spreader 8 connect on rabbling mechanism 2.

When purifying sewage, the sewage is guided into the sedimentation barrel 1 for preliminary sedimentation, the porous adsorbent is put into the pesticide spreading mechanism 8, and the stirring mechanism 2 is started to stir the sewage, the stirring mechanism 2 drives the pesticide spreading mechanism 8 to spread the porous adsorbent into the sewage, the sewage is adsorbed and precipitated, then the ozone is guided into the aeration mechanism 4 through the air pump mechanism 7, the air is guided into the sewage by the aeration mechanism 4 for aeration, meanwhile, the oxidant, the coagulant aid and the flocculating agent are added into the pesticide spreading mechanism 8, while stirring the sewage, the oxidant, coagulant aid and flocculating agent are scattered into the sewage, after standing for a period of time, the sewage is discharged out of the sedimentation barrel 1, the sewage is subjected to osmotic filtration treatment after being discharged to complete purification, then the aeration mechanism 4 rotates reversely to drive the sediment pushing mechanism 3 to push the sediment downwards, and then the sediment is discharged out of the sedimentation barrel 1 through the discharging mechanism 5 and the plugging mechanism 6.

The second embodiment is as follows:

as shown in figures 1-12, the sedimentation barrel 1 comprises a cylinder pipe 1-1, a water inlet pipe 1-2, a water outlet pipe 1-3, a cone pipe 1-4, a lower connecting pipe 1-5, a motor mounting plate 1-6, a sewage discharge inclined pipe 1-7, a semicircular cavity 1-8, a threaded rod connecting pipe 1-9, a support leg 1-10 and a central fixing pipe 1-11, wherein the water inlet pipe 1-2 is arranged at the upper end of the cylinder pipe 1-1, the water outlet pipe 1-3 is arranged at the lower end of the cylinder pipe 1-1, the cone pipe 1-4 is fixedly connected at the lower end of the cylinder pipe 1-1, the lower connecting pipe 1-5 is fixedly connected at the lower end of the cone pipe 1-4, the sewage discharge inclined pipe 1-7 is fixedly connected at the lower end of the lower connecting pipe 1-5 in an inclined manner, the motor mounting plate 1-, the lower end of the sewage inclined tube 1-7 is provided with a semicircular cavity 1-8, a threaded rod connecting tube 1-9 is fixedly connected to the upper end face of the sewage inclined tube 1-7, a central fixed tube 1-11 is fixedly connected to the lower end face of the sewage inclined tube 1-7, the central fixed tube 1-11 is coaxially arranged with a cylindrical tube 1-1, a conical tube 1-4 and a lower connecting tube 1-5, and the lower end face of the conical tube 1-4 is uniformly and fixedly connected with four supporting legs 1-10.

The water inlet pipe 1-2 is used for adding sewage into a barrel body formed by the cylindrical pipe 1-1, the conical cylindrical pipe 1-4 and the lower connecting pipe 1-5, the water outlet pipe 1-3 is used for discharging the sewage, and the sewage discharging inclined pipe 1-7 is used for discharging sediments.

The third concrete implementation mode:

as shown in fig. 1-12, the stirring mechanism 2 includes an upper cover plate 2-1, a stirring motor 2-2, a sliding hole 2-3, a stirring shaft 2-4, a stirring plate 2-5 and a fixing plate 2-6, the upper cover plate 2-1 is fixedly connected to the upper end of the cylindrical pipe 1-1, the stirring motor 2-2 is fixedly connected to the upper cover plate 2-1, the upper end of the stirring shaft 2-4 is rotatably connected to the upper cover plate 2-1 and is fixedly connected to an output shaft of the stirring motor 2-2, the sliding hole 2-3 is radially disposed on the upper cover plate 2-1, the stirring shaft 2-4 is fixedly connected to the plurality of stirring plates 2-5, and the fixing plate 2-6 is fixedly connected to the outer end of the sliding hole 2-3.

The stirring motor 2-2 drives the stirring plate 2-5 to stir the sewage in the cylindrical pipe 1-1 through the stirring shaft 2-4.

The fourth concrete implementation mode:

as shown in fig. 1-12, the sediment ejecting mechanism 3 includes a rotary circular plate 3-1, a cross connecting plate 3-2 and a conical spiral plate 3-3, the rotary circular plate 3-1 is fixedly connected to the outer end of the cross connecting plate 3-2, the rotary circular plate 3-1 is fixedly connected to the upper end of the conical spiral plate 3-3, the rotary circular plate 3-1 is rotatably connected to the lower end of the cylindrical tube 1-1, the conical spiral plate 3-3 is rotatably connected to the conical tube 1-4, and the conical spiral plate 3-3 is in contact with the inner wall of the conical tube 1-4.

When the aeration mechanism 4 rotates reversely, the cross connecting plate 3-2 is driven to rotate through the one-way bearing, the conical spiral plate 3-3 is driven to rotate in the conical barrel pipe 1-4 through the rotating circular ring plate 3-1 to form spiral scraping and pushing on the inner wall of the conical barrel pipe 1-4, so that sediment is pushed into the lower connecting pipe 1-5 through the conical barrel pipe 1-4, and the sediment flows into the sewage discharge inclined pipe 1-7 through the lower connecting pipe 1-5.

The fifth concrete implementation mode:

as shown in fig. 1-12, the aeration mechanism 4 comprises an aeration motor 4-1 and an aeration connecting pipe 4-2, the aeration stirring pipes 4-3 and the air holes 4-4, the upper end of the aeration connecting pipe 4-2 is fixedly connected to the center of the cross connecting plate 3-2, four aeration stirring pipes 4-3 are arranged, four aeration stirring pipes 4-3 are uniformly and circumferentially fixedly connected to the upper end of the aeration connecting pipe 4-2, a plurality of air holes 4-4 are formed in the lower sides of the four aeration stirring pipes 4-3, the air holes 4-4 are communicated with the aeration connecting pipe 4-2, the lower end of the aeration connecting pipe 4-2 is rotatably connected into the center fixing pipe 1-11, the aeration motor 4-1 is fixedly connected onto the motor mounting plate 1-6, and the aeration motor 4-1 is in transmission connection with the aeration connecting pipe 4-2.

The air pump mechanism 7 guides ozone into the lower end of the aeration connecting pipe 4-2, the ozone flows into the air hole 4-4 of the aeration stirring pipe 4-3 through the aeration connecting pipe 4-2 and enters the sewage through the air hole 4-4 to aerate the sewage, meanwhile, the aeration motor 4-1 drives the aeration connecting pipe 4-2 to drive the aeration stirring pipe 4-3 to rotate in the conical barrel pipe 1-4, the ozone is fully contacted with the sewage while the sewage is stirred, the aeration efficiency is improved, and meanwhile, the aeration efficiency is further improved by matching with the stirring of the stirring mechanism 2 to the sewage.

The sixth specific implementation mode:

as shown in fig. 1-12, the discharging mechanism 5 comprises a sewage discharging motor 5-1, a sewage discharging shaft 5-2, a sewage discharging roller 5-3 and a sewage discharging plate 5-4, the sewage discharging shaft 5-2 is fixedly connected to an output shaft of the sewage discharging motor 5-1, the sewage discharging roller 5-3 is fixedly connected to the sewage discharging shaft 5-2, the sewage discharging roller 5-3 is fixedly connected to a plurality of sewage discharging plates 5-4, the sewage discharging shaft 5-2 is rotatably connected to the semicircular cavity 1-8, the sewage discharging plate 5-4 is rotatably connected to the semicircular cavity 1-8, and the sewage discharging motor 5-1 is fixedly connected to the semicircular cavity 1-8.

The sewage discharging motor 5-1 drives the sewage discharging plate 5-4 to rotate in the semicircular cavity 1-8 through the sewage discharging shaft 5-2 and the sewage discharging roller 5-3, so that the sediment in the sewage discharging inclined pipe 1-7 is pushed out, and the efficiency of discharging the sediment is improved.

The seventh embodiment:

as shown in fig. 1-12, the plugging mechanism 6 comprises a plugging plate 6-1, a threaded plate 6-2 and an adjusting threaded rod 6-3, the threaded plate 6-2 is fixedly connected to the plugging plate 6-1, the adjusting threaded rod 6-3 is connected to the threaded plate 6-2 through a thread, the plugging plate 6-1 is slidably connected to the inside of the sewage inclined pipe 1-7, and the adjusting threaded rod 6-3 is rotatably connected to the inside of the threaded rod connecting pipe 1-9.

The plugging plate 6-1 is used for plugging the sewage inclined pipe 1-7, the adjusting threaded rod 6-3 is rotated, the adjusting threaded rod 6-3 is in threaded connection with the threaded plate 6-2, so that the threaded plate 6-2 drives the plugging plate 6-1 to lift, the sewage inclined pipe 1-7 is opened, and precipitates flow out of the sewage inclined pipe 1-7.

The specific implementation mode is eight:

as shown in fig. 1-12, the air pump mechanism 7 includes an air pump 7-1, an air pipe 7-2 and a connecting frame 7-3, the air pipe 7-2 is fixedly connected to the connecting frame 7-3, the lower end of the air pipe 7-2 is rotatably connected to the lower end of the aeration connecting pipe 4-2, the upper end of the air pipe 7-2 is connected to the air pump 7-1, the air pump 7-1 is fixedly connected to the upper cover plate 2-1, and the connecting frame 7-3 is fixedly connected to two of the legs 1-10.

The air pump 7-1 is used for guiding ozone into the lower end of the aeration connecting pipe 4-2 through the air pipe 7-2.

The specific implementation method nine:

as shown in fig. 1-12, the medicine spreading mechanism 8 comprises a cam 8-1, a rotating wheel 8-2, a rotating wheel frame 8-3, a medicine storage box 8-4, a medicine leakage plate 8-5, a sliding column 8-6 and a spring 8-7, the cam 8-1 is fixedly connected to a stirring shaft 2-4, the medicine storage box 8-4 is slidably connected to a sliding hole 2-3, the two ends of the medicine storage box 8-4 are respectively and fixedly connected with the rotating wheel frame 8-3 and the sliding column 8-6, the medicine leakage plate 8-5 is fixedly connected to the lower end of the medicine storage box 8-4, the rotating wheel 8-2 is rotatably connected to the rotating wheel frame 8-3, the cam 8-1 is rotatably connected with the rotating wheel 8-2, the spring 8-7 is sleeved on the sliding column 8-6, the sliding column 8-6 is slidably connected to a fixing plate 2-6, two ends of the spring 8-7 respectively push against the medicine storage box 8-4 and the fixing plate 2-6.

When a porous adsorbent or an oxidant, a coagulant aid and a flocculating agent are required to be added into sewage, the stirring shaft 2-4 drives the cam 8-1 to rotate to form extrusion on the rotating wheel 8-2, the rotating wheel 8-2 drives the medicine storage box 8-4 through the rotating wheel frame 8-3 to enable the sliding column 8-6 to slide in the fixed plate 2-6, meanwhile, the medicine storage box 8-4 is made to slide in the sliding hole 2-3 in a reciprocating way by the elasticity of the spring 8-7 to form the vibration of the medicine storage box 8-4, so that the porous adsorbent or the oxidant, the coagulant aid and the flocculating agent are uniformly scattered into the sewage by the medicine leakage plate 8-5, the sewage and the porous adsorbent or the oxidant, the coagulant aid and the flocculating agent are uniformly mixed, and meanwhile, the efficiency of uniformly mixing the sewage with the porous adsorbent or the oxidant, the coagulant aid and the flocculating agent is further improved by matching with the stirring mechanism 2.

The invention relates to a sewage purification process, which has the use principle that: when purifying sewage, the sewage is guided into the sedimentation barrel 1 for preliminary sedimentation, the porous adsorbent is put into the pesticide spreading mechanism 8, and the stirring mechanism 2 is started to stir the sewage, the stirring mechanism 2 drives the pesticide spreading mechanism 8 to spread the porous adsorbent into the sewage, the sewage is adsorbed and precipitated, then the ozone is guided into the aeration mechanism 4 through the air pump mechanism 7, the air is guided into the sewage by the aeration mechanism 4 for aeration, meanwhile, the oxidant, the coagulant aid and the flocculating agent are added into the pesticide spreading mechanism 8, while stirring the sewage, the oxidant, coagulant aid and flocculating agent are scattered into the sewage, after standing for a period of time, the sewage is discharged out of the sedimentation barrel 1, the sewage is subjected to osmotic filtration treatment after being discharged to complete purification, then the aeration mechanism 4 rotates reversely to drive the sediment pushing mechanism 3 to push the sediment downwards, and then the sediment is discharged out of the sedimentation barrel 1 through the discharging mechanism 5 and the plugging mechanism 6.

It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and that various changes, modifications, additions and substitutions which are within the spirit and scope of the present invention and which may be made by those skilled in the art are also within the scope of the present invention.

Claims

1. A sewage purification process is characterized in that: the method comprises the following steps:

step five, discharging the precipitate out of the precipitation barrel;

the sewage purification process also relates to a sewage purification device;

the sewage purification device comprises a sedimentation barrel (1), a stirring mechanism (2), a sediment pushing mechanism (3), an aeration mechanism (4), a discharge mechanism (5), a plugging mechanism (6), an air pump mechanism (7) and a pesticide spreading mechanism (8), wherein the stirring mechanism (2) is fixedly connected on the sedimentation barrel (1), the sediment pushing mechanism (3) is rotatably connected in the sedimentation barrel (1), the aeration mechanism (4) is connected at the lower end of the sedimentation barrel (1) and is rotatably connected with the sediment pushing mechanism (3) through a one-way bearing, the discharge mechanism (5) is connected at the lower end of the sedimentation barrel (1), the plugging mechanism (6) is slidably connected at the lower end of the sedimentation barrel (1), the air pump mechanism (7) is fixedly connected on the sedimentation barrel (1) and is rotatably connected with the aeration mechanism (4), the pesticide spreading mechanism (8) is connected to the stirring mechanism (2).

2. A process for purifying wastewater as claimed in claim 1, wherein: the sedimentation barrel (1) comprises a cylindrical pipe (1-1), a water inlet pipe (1-2), a drain pipe (1-3), a cone barrel pipe (1-4), a lower connecting pipe (1-5), a motor mounting plate (1-6), a sewage discharge inclined pipe (1-7), a semicircular cavity (1-8), a threaded rod connecting pipe (1-9), a supporting leg (1-10) and a central fixing pipe (1-11), wherein the upper end of the cylindrical pipe (1-1) is provided with the water inlet pipe (1-2), the lower end of the cylindrical pipe (1-1) is provided with the drain pipe (1-3), the lower end of the cylindrical pipe (1-1) is fixedly connected with the cone barrel pipe (1-4), the lower connecting pipe (1-5) is fixedly connected with the lower end of the cone barrel pipe (1-4), and the sewage discharge inclined pipe (1-7) is obliquely and fixedly connected with the lower end of the lower connecting, the motor mounting plate (1-6) is fixedly connected to the lower connecting pipe (1-5), the lower end of the sewage inclined pipe (1-7) is provided with a semicircular cavity (1-8), the threaded rod connecting pipe (1-9) is fixedly connected to the upper end face of the sewage inclined pipe (1-7), the central fixing pipe (1-11) is fixedly connected to the lower end face of the sewage inclined pipe (1-7), the central fixing pipe (1-11) is coaxially arranged with the cylindrical pipe (1-1), the conical pipe (1-4) and the lower connecting pipe (1-5), and the lower end face of the conical pipe (1-4) is uniformly and fixedly connected with four supporting legs (1-10).

3. A process for purifying wastewater as claimed in claim 2, wherein: the stirring mechanism (2) comprises an upper cover plate (2-1), a stirring motor (2-2), a slide hole (2-3), a stirring shaft (2-4), a stirring plate (2-5) and a fixing plate (2-6), the upper cover plate (2-1) is fixedly connected to the upper end of the cylindrical pipe (1-1), the stirring motor (2-2) is fixedly connected to the upper cover plate (2-1), the upper end of the stirring shaft (2-4) is rotatably connected to the upper cover plate (2-1) and fixedly connected with an output shaft of the stirring motor (2-2), the sliding hole (2-3) is radially arranged on the upper cover plate (2-1), the stirring shaft (2-4) is fixedly connected with a plurality of stirring plates (2-5), and the fixing plate (2-6) is fixedly connected to the outer end of the sliding hole (2-3).

4. A process for purifying wastewater as claimed in claim 3, wherein: the sediment ejecting mechanism (3) comprises a rotary circular plate (3-1), a cross connecting plate (3-2) and a conical spiral plate (3-3), the rotary circular plate (3-1) is fixedly connected to the outer end of the cross connecting plate (3-2), the rotary circular plate (3-1) is fixedly connected to the upper end of the conical spiral plate (3-3), the rotary circular plate (3-1) is rotatably connected to the lower end of the inside of a cylindrical pipe (1-1), the conical spiral plate (3-3) is rotatably connected to the inside of a conical pipe barrel (1-4), and the conical spiral plate (3-3) is in contact with the inner wall of the conical pipe (1-4).

5. A process for purifying wastewater as claimed in claim 4, wherein: the aeration mechanism (4) comprises an aeration motor (4-1), aeration connecting pipes (4-2), aeration stirring pipes (4-3) and air holes (4-4), the upper ends of the aeration connecting pipes (4-2) are fixedly connected to the center of the cross connecting plate (3-2), four aeration stirring pipes (4-3) are arranged, the four aeration stirring pipes (4-3) are uniformly and circumferentially fixedly connected to the upper ends of the aeration connecting pipes (4-2), the lower sides of the four aeration stirring pipes (4-3) are respectively provided with a plurality of air holes (4-4), the plurality of air holes (4-4) are communicated with the aeration connecting pipes (4-2), the lower ends of the aeration connecting pipes (4-2) are rotatably connected into the center fixing pipes (1-11), the aeration motor (4-1) is fixedly connected onto a motor mounting plate (1-6), the aeration motor (4-1) is in transmission connection with the aeration connecting pipe (4-2).

6. A process for purifying wastewater as claimed in claim 5, wherein: the discharging mechanism (5) comprises a sewage discharging motor (5-1), a sewage discharging shaft (5-2), a sewage discharging roller (5-3) and a sewage discharging plate (5-4), the sewage discharging shaft (5-2) is fixedly connected to an output shaft of the sewage discharging motor (5-1), the sewage discharging roller (5-3) is fixedly connected to the sewage discharging shaft (5-2), the sewage discharging roller (5-3) is fixedly connected with a plurality of sewage discharging plates (5-4), the sewage discharging shaft (5-2) is rotatably connected to the semicircular cavity (1-8), the sewage discharging plate (5-4) is rotatably connected to the semicircular cavity (1-8), and the sewage discharging motor (5-1) is fixedly connected to the semicircular cavity (1-8).

7. A process for purifying wastewater as claimed in claim 6, wherein: the plugging mechanism (6) comprises a plugging plate (6-1), a threaded plate (6-2) and an adjusting threaded rod (6-3), the threaded plate (6-2) is fixedly connected to the plugging plate (6-1), the adjusting threaded rod (6-3) is connected to the threaded plate (6-2) through threads, the plugging plate (6-1) is connected to a sewage discharge inclined pipe (1-7) in a sliding mode, and the adjusting threaded rod (6-3) is connected to a threaded rod connecting pipe (1-9) in a rotating mode.

8. A process for purifying wastewater as claimed in claim 7, wherein: the air pump mechanism (7) comprises an air pump (7-1), an air pipe (7-2) and a connecting frame (7-3), the air pipe (7-2) is fixedly connected to the connecting frame (7-3), the lower end of the air pipe (7-2) is rotatably connected to the lower end of the aeration connecting pipe (4-2), the upper end of the air pipe (7-2) is connected with the air pump (7-1), the air pump (7-1) is fixedly connected to the upper cover plate (2-1), and the connecting frame (7-3) is fixedly connected to two of the supporting legs (1-10).

9. A process for purifying wastewater as claimed in claim 8, wherein: the medicine spreading mechanism (8) comprises a cam (8-1), a rotating wheel (8-2), a rotating wheel frame (8-3), a medicine storage box (8-4), a medicine leaking plate (8-5), a sliding column (8-6) and a spring (8-7), the cam (8-1) is fixedly connected to a stirring shaft (2-4), the medicine storage box (8-4) is slidably connected to the inside of the sliding hole (2-3), the two ends of the medicine storage box (8-4) are respectively and fixedly connected with the rotating wheel frame (8-3) and the sliding column (8-6), the medicine leaking plate (8-5) is fixedly connected to the lower end of the medicine storage box (8-4), the rotating wheel (8-2) is rotatably connected to the rotating wheel frame (8-3), and the cam (8-1) is rotatably connected with the rotating wheel (8-2), the springs (8-7) are sleeved on the sliding columns (8-6), the sliding columns (8-6) are connected to the fixing plates (2-6) in a sliding mode, and two ends of each spring (8-7) respectively push against the medicine storage boxes (8-4) and the fixing plates (2-6).