CN112777784A

CN112777784A - Heavy metal industrial sewage treatment basic process

Info

Publication number: CN112777784A
Application number: CN202011500165.7A
Authority: CN
Inventors: 邹佳骊; 戴祝青; 龙军
Original assignee: Great Yangtze River Environmental Engineering Technology Co ltd
Current assignee: Great Yangtze River Environmental Engineering Technology Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-05-11
Anticipated expiration: 2040-12-17
Also published as: CN112777784B

Abstract

The invention discloses a basic process for treating heavy metal industrial sewage, which comprises the following steps: the collected sewage is preliminarily filtered, large-particle impurities in the sewage are filtered, heavy metal ions in the sewage are treated by the impurity removing device, by adding alkali liquor into the sewage solution, heavy metal ions and the alkali liquor are combined to produce flocculent precipitate, then starting an aerator, so that the sediment is combined with air and floats above the sewage liquid level, the sediment is scraped, the removal of the metal ions is realized, then the second motor is started, the second motor drives the positioning rod to start rotating, the positioning rod drives the scraping blade to start rotating, because the scraping blade and the liquid level are in the same horizontal plane, the floccules floating above the liquid level can be scraped rightwards and enter the collecting box through the discharge groove and the fixed groove in sequence, and the filtering treatment is not needed, so that the filter screen is prevented from being blocked, and the sewage treatment efficiency is reduced.

Description

Heavy metal industrial sewage treatment basic process

Technical Field

The invention relates to the technical field of heavy metal sewage treatment, in particular to a basic process for heavy metal industrial sewage treatment.

Background

In recent years, with the development of population and economy, environmental problems become more serious, and the government and the vast people in China pay high attention. The problem of water pollution is a key problem in a plurality of environmental problems, and the water pollution causes soil pollution, air pollution and damage to the overall ecological environment. The main sources of water pollution are domestic sewage and industrial sewage, wherein the industrial sewage is the first time, and the heavy metal industrial sewage is one of the key industrial waste water and is harmful to human bodies and the environment. The treatment of industrial discharge sewage containing heavy metals is generally carried out by a precipitation method 1; 2, a physical-chemical method; 3, an electrochemical method; 4, biochemical methods, etc.

The traditional sewage treatment method cannot effectively remove heavy metal ions in sewage, the alkali liquor reacts with the heavy metal ions to generate precipitate, and then the precipitate is filtered, but the precipitate easily blocks filter holes, so that the sewage treatment efficiency is reduced, the alkali liquor and the sewage cannot fully react in the treatment process, and irritant gas generated in the sewage cannot be effectively filtered and discharged, so that a basic process for treating the sewage in the heavy metal industry is needed.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a basic process for treating heavy metal industrial sewage.

In order to achieve the purpose, the invention adopts the following technical scheme:

a basic process for treating heavy metal industrial sewage comprises the following steps:

s1: the preliminary filtration that carries out the sewage of collecting filters the large granule impurity in the sewage.

S2: through handling the heavy metal ion of roguing the device in to the sewage, through adding alkali lye to the sewage solution for heavy metal ion combines together with alkali lye to produce the flocculent sediment, restarts the aeration machine, thereby makes sediment and air combine together and float in sewage liquid level top, scrapes the material to the sediment again, has just realized the cleaing away to heavy metal ion.

S3: the method is characterized in that iron-carbon micro-electrolysis filler is added into the sewage, the iron-carbon micro-electrolysis filler is fully contacted with the sewage, redox reaction begins to occur around the iron-carbon micro-electrolysis filler, ferrous iron and a plurality of impurities in the sewage can undergo redox reaction, generated ferric iron hydrate has adsorbability, and the iron-carbon micro-electrolysis filler can destroy carbon chains so as to treat organic metal compounds in the sewage and the sewage.

S4: and adding a bleaching agent into the treated sewage to remove the odor in the sewage, and simultaneously enabling the sewage to be clear and reach the discharge standard.

Preferably, the impurity removing device comprises a treatment box, a first motor is fixedly connected to the outer side wall of the treatment box, a stirring rod is fixedly connected to the tail end of an output shaft of the first motor, a sewage inlet pipe is fixedly connected to the outer side wall of the treatment box, the sewage inlet pipe penetrates through the outer side wall of the treatment box and extends into the treatment box, a fixedly connected limiting box is fixedly connected to the tail end of the sewage inlet pipe, a limiting groove is formed in the outer side wall of the limiting box, a closing mechanism is slidably connected to the inner side wall of the limiting groove and abuts against the tail end of the sewage inlet pipe, a drainage groove is formed in the outer side wall of the limiting box, an aerator is fixedly connected to the outer side wall of the treatment box, the tail end of the aerator penetrates through the outer side wall of the treatment box and extends into the treatment box, and a discharge valve is fixedly connected to the bottom of the treatment box, the outer side wall of the treatment box is provided with a discharge groove, the outer side wall of the treatment box is fixedly connected with a collection box, the outer side wall of the collecting box is provided with a fixed groove, the outer side wall of the collecting box is fixedly connected with an air outlet pipe, the inner side wall of the air outlet pipe is fixedly connected with an air suction mechanism, the inner side wall of the air outlet pipe is fixedly connected with a filter screen, the outer side wall of the treatment box is fixedly connected with a second motor, the output shaft of the second motor penetrates through the outer side wall of the treatment box, the tail end of the output shaft of the second motor is fixedly connected with a positioning rod, the tail end of the positioning rod is rotationally connected with the inner side wall of the treatment box, the utility model discloses a processing box, including locating lever, processing case, stirring rod, fixed connection have a plurality of doctor-bars on the lateral wall of locating lever, fixedly connected with steadying plate on the inside wall of processing case, the stirring rod runs through steadying plate, the bottom fixedly connected with of processing case supports the base.

Preferably, the closing mechanism includes the gag lever post of sliding connection on the spacing inslot lateral wall, the terminal fixedly connected with kickboard of gag lever post, fixedly connected with closure plate on the lateral wall of gag lever post, closure plate offsets tightly with the end of sewage inlet tube.

Preferably, the suction mechanism includes the backup pad of fixed connection on the play tuber pipe inside wall, it is connected with the connecting rod to rotate on the lateral wall of backup pad, the first runner of fixedly connected with on the lateral wall of connecting rod, first runner and second rotate and take turns to between be connected through belt transmission, fixedly connected with flabellum on the lateral wall of connecting rod.

Preferably, the discharge groove is communicated with the fixing groove.

Preferably, the wiper blade is at the same level as the bottom of the discharge chute.

Preferably, the material of the support base is austenitic stainless steel.

Preferably, the material of the scraping blade is light plastic.

Compared with the prior art, the invention has the beneficial effects that:

1. let in sewage to the inside of handling the case through the sewage inlet tube, along with the continuous inflow of sewage for the sewage liquid level of handling incasement portion constantly risees, and sewage is to ascending buoyancy of kickboard, and the kickboard upwards floats and drives the gag lever post rebound, and the gag lever post drives the closing plate rebound, and it is tight to the terminal counterbalance of closing plate and sewage inlet tube, makes the closure of sewage inlet tube, realizes the ration interpolation to sewage.

2. Adding alkali liquor into the inside of a treatment box through an alkali liquor feeding pipe, starting a first motor, driving a stirring rod to rotate by the first motor, enabling the alkali liquor to fully react with heavy metal ions in sewage to produce flocculent precipitate, starting an aerator, leading air into the sewage by the aerator, enabling a large amount of air wrapped around the flocculent precipitate to float upwards, enabling the sewage to move towards two sides due to the rotation of the stirring rod, enabling the flocculent precipitate after aeration to float above a liquid level, starting a second motor, driving a positioning rod to rotate by the second motor, driving the scraping rod to rotate, enabling the scraping blade and the liquid level to be positioned on the same horizontal plane, scraping flocculent floating above the liquid level to the right, sequentially entering a collection box through a discharge groove and a fixed groove, avoiding the filtering treatment and avoiding the blockage of a filter screen, reducing the sewage treatment efficiency.

3. Can stabilize the surface of water on upper strata through the steadying plate, avoid the surface of water to make a round trip to tumble, the output shaft through first motor drives the second and rotates the wheel and begin to rotate, because the second rotates and is connected through the conveyer belt transmission between wheel and the first wheel, thereby make the connecting rod begin to rotate, the connecting rod rotates and drives the flabellum and begin to rotate, the flabellum rotates and discharges the pungent nature gas inside the collecting box and the inside production of treatment case, can filter gas through the filter screen, thereby realized the gaseous filtration of irritability in the sewage, avoid gaseous direct discharge to cause the injury to environment and staff on every side.

Drawings

FIG. 1 is a schematic structural diagram of a basic process for treating heavy metal industrial sewage according to the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is an enlarged view of portion A of the present invention;

FIG. 4 is an enlarged view of portion B of the present invention;

FIG. 5 is an enlarged view of portion C of the present invention;

FIG. 6 is a perspective view of the connection between the positioning rod and the wiper blade of the present invention.

In the figure: 1 treatment box, 2 first motor, 3 alkali liquor feeding pipe, 4 sewage inlet pipe, 5 floating plate, 6 stirring rod, 7 stabilizing plate, 8 positioning rod, 9 scraping blade, 10 discharge groove, 11 fixing groove, 12 collecting box, 13 air outlet pipe, 14 connecting rod, 15 first rotating wheel, 16 aerator, 17 discharge valve, 18 supporting base, 19 second rotating wheel, 20 limiting box, 21 limiting groove, 22 closing plate, 23 limiting rod, 24 fan blade, 25 supporting plate, 26 filter screen, 27 second motor, 28 water discharge groove.

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.

Referring to fig. 1-6, a basic process for treating heavy metal industrial sewage comprises the following steps:

The impurity removing device comprises a treatment box 1, wherein the outer side wall of the treatment box 1 is fixedly connected with a first motor 2, the tail end of an output shaft of the first motor 2 is fixedly connected with a stirring rod 6, the outer side wall of the treatment box 1 is fixedly connected with a sewage inlet pipe 4, the sewage inlet pipe 4 penetrates through the outer side wall of the treatment box 1 and extends into the treatment box 1, the tail end of the sewage inlet pipe 4 is fixedly connected with a fixedly connected limiting box 20, and the outer side wall of the limiting box 20 is provided with a limiting groove 21;

sliding connection has a closing mechanism on the inside wall of spacing groove 21, closing mechanism offsets tightly with the end of sewage inlet tube 4, closing mechanism includes gag lever post 23 of sliding connection on the inside wall of spacing groove 21, the terminal fixedly connected with kickboard 5 of gag lever post 23, fixedly connected with closing board 22 on the lateral wall of gag lever post 23, closing board 22 offsets tightly with the end of sewage inlet tube 4, seted up water drainage tank 28 on the lateral wall of spacing box 20, it has linked firmly aerator 16 on the lateral wall of treatment box 1, the end of aerator 16 runs through the lateral wall of treatment box 1 and extends to the inside of treatment box 1, aerator 16 makes the flocculent deposit around be full of gas and form the air mass to float upwards, can also accelerate alkali lye and the reaction rate of heavy metal ion in the sewage simultaneously, the bottom fixedly connected with discharge valve 17 of treatment box 1, set up discharge tank 10 on the lateral wall of treatment box 1, the outer side wall of the treatment box 1 is fixedly connected with a collection box 12, the outer side wall of the collection box 12 is provided with a fixed groove 11, and the discharge groove 10 is communicated with the fixed groove 11, so that flocculent impurities can be conveniently discharged;

the outer side wall of the collecting box 12 is fixedly connected with an air outlet pipe 13, the inner side wall of the air outlet pipe 13 is fixedly connected with an air suction mechanism, the air suction mechanism comprises a supporting plate 25 fixedly connected on the inner side wall of the air outlet pipe 13, the outer side wall of the supporting plate 25 is rotatably connected with a connecting rod 14, the outer side wall of the connecting rod 14 is fixedly connected with a first rotating wheel 15, the first rotating wheel 15 is connected with a second rotating wheel 19 through a belt transmission, the outer side wall of the connecting rod 14 is fixedly connected with a fan blade 24, the inner side wall of the air outlet pipe 13 is fixedly connected with a filter screen 26, the outer side wall of the processing box 1 is fixedly connected with a second motor 27, an output shaft of the second motor 27 penetrates through the outer side wall of the processing box 1, the tail end of an output shaft of the second motor 27 is fixedly connected with a positioning, the material of doctor-bar 9 is light plastics, can bend, thereby reduce the resistance that produces when contacting with sewage, can not make the sewage surface produce violent fluctuation, doctor-bar 9 is in same horizontal plane with the bottom of discharge tank 10, fixedly connected with steadying plate 7 on the inside wall of processing case 1, stirring rod 6 runs through steadying plate 7, the bottom fixedly connected with who handles case 1 supports base 18, the material that supports base 18 is the austenite stainless steel, the stable difficult rust of austenite stainless steel structure, can use for a long time and need not change.

In the invention, when in use, the metal industrial sewage is discharged into the limiting box 20 through the sewage inlet pipe 4, the sewage is discharged into the treatment box 1 through the water discharge groove 28 arranged on the outer side wall of the limiting box 20, the liquid level of the sewage continuously rises along with the continuous increase of the sewage in the treatment box 1, the sewage has upward buoyancy on the floating plate 5, so that the floating plate 5 moves upward, the floating plate 5 drives the limiting rod 23 to move upward, the limiting rod 23 drives the closing plate 22 to move upward, the closing plate 22 moves upward and is abutted against the outer side wall of the sewage inlet pipe 4, further the closing of the sewage inlet pipe 4 is realized, when the sewage inlet pipe 4 stops discharging water, the water supply outside the sewage inlet pipe 4 is disconnected, the alkali liquor is added into the treatment box 1 through the alkali liquor inlet pipe 3, the first motor 2 is started, the first motor 2 drives the stirring rod 6 to rotate, the stirring rod 6 rotates to enable the alkali liquor and heavy metal ions in the sewage to fully react to produce flocculent precipitate, the aerator 16 is started again, the aerator 16 guides air into the sewage, so that a large amount of air is wrapped around the flocculent precipitate to form air clusters, the upward buoyancy of the air clusters is larger than the gravity of flocculent matters per se, so that the flocculent precipitate floats upwards, the sewage moves towards two sides in the rotating process due to the stirring rod 6, the air clusters float upwards through two sides of the stabilizing plate 7, so that the aerated flocculent precipitate floats above the liquid level, the second motor 27 is started again, the second motor 27 drives the positioning rod 8 to start rotating, the positioning rod 8 drives the scraping blade 9 to start rotating, the scraping blade 9 and the liquid level are in the same horizontal plane, so that the flocculent matters floating above the liquid level can be scraped rightwards, and the flocculent matters sequentially pass through the discharge groove 10 and the fixing groove 11 to, the output shaft of first motor 2 drives the second and rotates wheel 19 and begin to rotate, because the second rotates and is connected through the conveyer belt transmission between wheel 19 and the first wheel 15, thereby make connecting rod 14 begin to rotate, connecting rod 14 rotates and drives flabellum 24 and begin to rotate, flabellum 24 rotates and discharges the gaseous play tuber pipe 13 of the pungent nature of collecting box 12 inside and the inside production of processing case 1, install the filter screen on play tuber pipe 13 inside wall and can filter gas, after the flocculus on the liquid level discharges completely, opening discharge valve 17, the sewage discharge after will handling.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A basic process for treating heavy metal industrial sewage comprises the following steps:

2. The heavy metal industrial sewage treatment basic process according to claim 1, wherein the impurity removing device comprises a treatment box (1), a first motor (2) is fixedly connected to the outer side wall of the treatment box (1), a stirring rod (6) is fixedly connected to the tail end of an output shaft of the first motor (2), a sewage inlet pipe (4) is fixedly connected to the outer side wall of the treatment box (1), the sewage inlet pipe (4) penetrates through the outer side wall of the treatment box (1) and extends into the treatment box (1), a fixedly connected limiting box (20) is fixedly connected to the tail end of the sewage inlet pipe (4), a limiting groove (21) is formed in the outer side wall of the limiting box (20), a closing mechanism is slidably connected to the inner side wall of the limiting groove (21) and abuts against the tail end of the sewage inlet pipe (4), the outer side wall of the limiting box (20) is provided with a drainage groove (28), the outer side wall of the treatment box (1) is fixedly connected with an aerator (16), the tail end of the aerator (16) penetrates through the outer side wall of the treatment box (1) and extends into the treatment box (1), the bottom of the treatment box (1) is fixedly connected with a discharge valve (17), the outer side wall of the treatment box (1) is provided with a discharge groove (10), the outer side wall of the treatment box (1) is fixedly connected with a collection box (12), the outer side wall of the collection box (12) is provided with a fixed groove (11), the outer side wall of the collection box (12) is fixedly connected with an air outlet pipe (13), the inner side wall of the air outlet pipe (13) is fixedly connected with an air suction mechanism, the inner side wall of the air outlet pipe (13) is fixedly connected with a filter screen (26), the upper side wall of the treatment box (1) is fixedly connected with, the output shaft of second motor (27) runs through the lateral wall of handling case (1), the terminal fixedly connected with locating lever (8) of output shaft of second motor (27), the end of locating lever (8) rotates with the inside wall of handling case (1) to be connected, a plurality of doctor-bars (9) of fixedly connected with on the lateral wall of locating lever (8), fixedly connected with steadying plate (7) on the inside wall of handling case (1), stirring rod (6) runs through steadying plate (7), the bottom fixedly connected with of handling case (1) supports base (18).

3. The heavy metal industrial sewage treatment basic process according to claim 2, wherein the closing mechanism comprises a limiting rod (23) which is slidably connected to the inner side wall of the limiting groove (21), the tail end of the limiting rod (23) is fixedly connected with a floating plate (5), the outer side wall of the limiting rod (23) is fixedly connected with a closing plate (22), and the closing plate (22) is abutted against the tail end of the sewage inlet pipe (4).

4. The heavy metal industrial sewage treatment basic process according to claim 2, wherein the air suction mechanism comprises a support plate (25) fixedly connected to the inner side wall of the air outlet pipe (13), the outer side wall of the support plate (25) is rotatably connected with a connecting rod (14), the outer side wall of the connecting rod (14) is fixedly connected with a first rotating wheel (15), the first rotating wheel (15) and a second rotating wheel (19) are connected through a belt transmission, and the outer side wall of the connecting rod (14) is fixedly connected with fan blades (24).

5. The basic process for the treatment of heavy metal industrial sewage according to claim 2, wherein the discharge tank (10) is in communication with the fixed tank (11).

6. The basic process for the treatment of heavy metal industrial sewage according to claim 1, characterized in that the doctor blade (9) is at the same level as the bottom of the discharge tank (10).

7. The heavy metal industrial sewage treatment basic process according to claim 2, wherein the material of the support base (18) is austenitic stainless steel.

8. The basic process for treating heavy metal industrial sewage according to claim 2, wherein the scraping blade (9) is made of light plastic.