CN214528408U - Treatment device for removing heavy metal thallium in sewage - Google Patents

Abstract

The utility model discloses a processing apparatus of heavy metal thallium in desorption sewage, including equalizing basin and inclined plate sedimentation tank, be provided with one-level retort, second grade retort, tertiary retort and level four retort between equalizing basin and the inclined plate sedimentation tank, and the equalizing basin is through first conveyer pipe and one-level retort through link up and be connected. Has the advantages that: in the process of sewage treatment, sewage firstly enters the regulating tank, the sewage passes through the first-level reaction tank and then sequentially enters the second-level reaction tank, the third-level reaction tank and the fourth-level reaction tank through the second conveying pipe to carry out chemical reaction, so that thallium is removed, finally, the sewage after thallium removal flows out of the fourth-level reaction tank and then enters the inclined plate sedimentation tank through the third conveying pipe to carry out sedimentation separation, the thallium content in the effluent is lower than 0.1 mu g/L, and the sulfide content in the effluent meets the standard, so that secondary pollution is avoided, and the thallium pollution is effectively solved.

Description

Treatment device for removing heavy metal thallium in sewage

Technical Field

The utility model relates to a sewage treatment technical field particularly, relates to a processing apparatus of heavy metal thallium in desorption sewage.

Background

Thallium is a dispersed element, has very low abundance (about 0.75mg/kg) on the earth, exists in sulfide ores such as iron, zinc and the like in trace amount, but has very wide application and is applied to the fields of national defense, aerospace, electronic communication and the like. At present, the amount of thallium used in the world every year is less than 15t, but thallium discharged by various industries reaches more than 2000t, which brings a series of serious pollution problems such as water body thallium pollution and soil thallium pollution, on the other hand, the thallium content is not yet included in the detection range of environmental protection departments at all levels, the discharge index of the thallium pollutant is not determined in the industrial standard lead-zinc industrial pollutant discharge standard (GB25466-2010) and the national standard comprehensive wastewater discharge standard (GB8978-1996), and indeed, thallium has extremely high toxicity to mammals and is serious or even fatal.

Currently, the following methods are mainly used for treating thallium-containing wastewater: (1) chemical oxidation precipitation method: the CN 1067229A thallium-containing wastewater treatment method discloses a thallium-containing wastewater treatment method, which comprises the steps of oxidizing monovalent thallium in wastewater into trivalent thallium by adopting an oxidizing agent under acidic conditions, then adding a coprecipitator to precipitate thallium, thereby achieving the purpose of thallium removal, and the method has simple flow and low cost, but the thallium content in effluent after treatment is about 50 mug/L, and the discharge requirement can not be met in many times, (2) a sulfurization precipitation method: the treatment method of waste water containing thallium of CN 1715204A discloses a treatment method of waste water containing thallium, which introduces sulfur and iron by adding powdered pyrite, the sulfur ion and monovalent thallium form thallium sulfide precipitate, and the iron ion generates flocculation precipitate, the method is simple, but the pyrite is required to contain excessive carbonate, and the initial pH of water body is required to be adjusted to strong acid, (3) the adsorption method: CN 110124637A discloses a thallium-containing wastewater adsorbing material and a preparation method thereof, and discloses a thallium adsorbing material which is prepared by utilizing chloromethyl polystyrene microspheres and thiourea, can treat the thallium concentration in wastewater to be below 5 mu g/L, but the preparation process is complex and is difficult to apply and popularize.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a processing apparatus of heavy metal thallium in desorption sewage possesses the advantage of effectively solving the thallium pollution, moving simply, convenient to use, and then solves the problem among the above-mentioned background art.

(II) technical scheme

For realizing the above-mentioned advantage of effectively solving thallium pollution, operation simple, convenient to use, the utility model discloses a concrete technical scheme as follows:

a treatment device for removing heavy metal thallium in sewage comprises an adjusting tank and an inclined plate sedimentation tank, wherein a first-stage reaction tank, a second-stage reaction tank, a third-stage reaction tank and a fourth-stage reaction tank are arranged between the adjusting tank and the inclined plate sedimentation tank, the adjusting tank is communicated with the first-stage reaction tank through a first conveying pipe, the first-stage reaction tank, the second-stage reaction tank, the third-stage reaction tank and the fourth-stage reaction tank are sequentially communicated with one another through a second conveying pipe, the fourth-stage reaction tank is communicated with the inclined plate sedimentation tank through a third conveying pipe, a first-stage dosing tank is fixedly arranged on the top surface of the first-stage reaction tank, the bottom surface of the first-stage dosing tank is communicated with the first-stage reaction tank through a connecting pipe, a second-stage dosing tank is fixedly arranged on the top surface of the second-stage reaction tank, the bottom surface of the second-stage dosing tank is communicated with the second-stage reaction tank through a connecting pipe, and a third-stage dosing tank is fixedly arranged on the top surface of the third-stage reaction tank, and tertiary retort underrun connecting pipe and tertiary retort through connection, level four retort top surface fixed mounting has the level four to add the retort, and level four adds the retort underrun connecting pipe and level four retort through connection to connecting pipe surface mounting has the measuring pump.

Further, one-level retort, second grade retort, tertiary retort and level four retort are the samely structure, and the inside main stirring rake that is provided with of one-level retort to one-level retort top surface central point puts fixed mounting and has main agitator motor, main stirring rake top surface runs through one-level retort top surface and is connected with main agitator motor output, one-level dosing tank, second grade dosing tank, tertiary dosing tank and level four dosing tank are the samely structure, and one-level dosing tank inside is provided with vice stirring rake to one-level dosing tank top surface central point puts fixed mounting and has vice agitator motor, vice stirring rake top surface runs through one-level dosing tank top surface and is connected with vice agitator motor output.

Furthermore, the surfaces of the first conveying pipe, the second conveying pipe and the third conveying pipe are connected with a conveying pump in a penetrating mode, and the pipe diameters of the first conveying pipe, the second conveying pipe and the third conveying pipe are not smaller than 10 cm.

Furthermore, a dosing port is formed in the top surface of the first-level dosing tank, and a plugging cover is spirally connected to the top surface of the dosing port.

Furthermore, the main stirring paddle and the auxiliary stirring paddle are both made of copper.

Further, the first-level dosing tank, the second-level dosing tank, the third-level dosing tank and the fourth-level dosing tank are all made of transparent materials.

(III) advantageous effects

Compared with the prior art, the utility model provides a processing apparatus of heavy metal thallium in desorption sewage possesses following beneficial effect:

(1) the utility model adopts a first-level reaction tank, a second-level reaction tank, a third-level reaction tank, a fourth-level reaction tank, a first-level dosing tank, a second-level dosing tank, a third-level dosing tank and a fourth-level dosing tank, in the process of sewage treatment, sewage firstly enters an adjusting tank, after the water quantity and the water quality are adjusted through the adjusting tank, the sewage enters the first-level reaction tank through a first conveying pipe, 10% -20% lime milk or sodium hydroxide solution is filled in the first-level dosing tank, a metering pump is adopted to dose the first-level reaction tank, the pH is adjusted to 10-12 for hydrolysis reaction, a chemical thallium removal agent is added into the second-level dosing tank, a biological thallium removal agent is added into the third-level dosing tank, a dosing pump is used to dose the third-level reaction tank, the fourth-level dosing tank is used to prepare a flocculating agent with the concentration of 1-2 thousandth of the metering pump, the fourth-level reaction tank is passed through the fourth-level reaction tank, after passing through the first-level reaction tank, sewage enters the second-level reaction tank through the second conveying pipe in sequence, the third-level reaction tank and the fourth-level reaction tank, chemical reaction is carried out, thallium is removed, finally, the sewage after thallium removal flows out of the fourth-level reaction tank, the sewage enters the inclined plate sedimentation tank through the third conveying pipe for sedimentation separation, the thallium content in the effluent is lower than 0.1 microgram/L, the sulfide content in the effluent meets the standard, secondary pollution is avoided, and thallium pollution is effectively solved.

(2) The utility model discloses an one-level retort, the second grade retort, tertiary retort, the level four retort, the one-level adds the medicinal cupping, the second grade adds the medicinal cupping, tertiary medicinal cupping and level four adds the medicinal cupping, and the one-level retort, the second grade retort, tertiary retort and the inside main stirring rake that is provided with of level four retort, drive the rotation by main agitator motor, to the one-level retort, the second grade retort, tertiary retort and the inside sewage of level four retort and medicament stir the mixture, the reaction process accelerates, thereby reaction rate has been improved, in addition, the one-level adds the medicinal cupping, the second grade adds the medicinal cupping, tertiary medicinal cupping and the level four adds the inside vice stirring rake that is provided with of medicinal cupping, drive the rotation by vice agitator motor, be convenient for prepare the medicament, this device moves simply, the design is nimble, can freely adjust as required, and can realize automaticly, and it is more convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a treatment device for removing heavy metal thallium from sewage;

FIG. 2 is a schematic structural view of a primary reaction tank of the present invention;

fig. 3 is a schematic diagram of the structure of the outer vertical surface of the first-stage reaction tank of the present invention.

In the figure:

1. a regulating tank; 2. a first-stage reaction tank; 3. a secondary reaction tank; 4. a third-stage reaction tank; 5. a four-stage reaction tank; 6. a first-stage medicine adding tank; 7. a second-stage medicine adding tank; 8. a third-stage medicine adding tank; 9. a four-stage medicine adding tank; 10. a sloping plate sedimentation tank; 11. a first delivery pipe; 12. a second delivery pipe; 13. a third delivery pipe; 14. a main stirring motor; 15. an auxiliary stirring motor; 16. a medicine adding port; 17. a metering pump; 18. a main stirring paddle; 19. and an auxiliary stirring paddle.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the utility model discloses an embodiment provides a processing apparatus of heavy metal thallium in desorption sewage.

Referring now to the drawings and the detailed description, as shown in fig. 1-3, a device for removing thallium from wastewater, which comprises an adjusting tank 1 and an inclined plate sedimentation tank 10, and is a common structure of wastewater treatment, and will not be described herein in detail, a first-stage reaction tank 2, a second-stage reaction tank 3, a third-stage reaction tank 4 and a fourth-stage reaction tank 5 are disposed between the adjusting tank 1 and the inclined plate sedimentation tank 10, the adjusting tank 1 is connected to the first-stage reaction tank 2 through a first conveying pipe 11, the first-stage reaction tank 2, the second-stage reaction tank 3, the third-stage reaction tank 4 and the fourth-stage reaction tank 5 are sequentially connected through a second conveying pipe 12, the fourth-stage reaction tank 5 is connected to the inclined plate sedimentation tank 10 through a third conveying pipe 13, a first-stage dosing tank 6 is fixedly mounted on the top surface of the first-stage reaction tank 2, and the bottom surface of the first-stage dosing tank 6 is connected to the first-stage reaction tank 2 through a connecting pipe, a second-stage dosing tank 7 is fixedly arranged on the top surface of the second-stage reaction tank 3, the bottom surface of the second-stage dosing tank 7 is communicated with the second-stage reaction tank 3 through a connecting pipe, a third-stage dosing tank 8 is fixedly arranged on the top surface of the third-stage reaction tank 4, the bottom surface of the third-stage dosing tank 8 is communicated with the third-stage reaction tank 4 through a connecting pipe, a fourth-stage dosing tank 9 is fixedly arranged on the top surface of the fourth-stage reaction tank 5, the bottom surface of the fourth-stage dosing tank 9 is communicated with the fourth-stage reaction tank 5 through a connecting pipe, a metering pump 17 is arranged on the surface of the connecting pipe, so that the reagent can be conveniently and quantitatively added, in the process of sewage treatment, sewage firstly enters the regulating tank 1, enters the first-stage reaction tank 2 through a first conveying pipe 11 after the water quantity and the water quality are regulated by the regulating tank 1, 10% -20% of lime milk or sodium hydroxide solution is contained in the first-stage dosing tank 6, and the metering pump 17 is adopted to add the reagent into the first-stage reaction tank 2, adjusting the pH value to 10-12 for hydrolysis reaction, adding a chemical thallium removal agent into a second-stage dosing tank 7 to disclose a medicament, which is not described herein in detail, adding a medicament into a second-stage reaction tank 3 by a metering pump 17, adding a biological thallium removal agent into a third-stage dosing tank 8 to disclose a medicament, which is not described herein in detail, adding a medicament into a third-stage reaction tank 4 by a metering pump 17, preparing a flocculant with a concentration of 1-2 permillage by a fourth-stage dosing tank 9, which is a common medicament, which is not described herein in detail, adding a medicament into a fourth-stage reaction tank 5 by a metering pump 17, passing sewage through a first-stage reaction tank 2, sequentially entering the second conveying pipe 12 into the second-stage reaction tank 3, the third-stage reaction tank 4 and the fourth-stage reaction tank 5 for chemical reaction, thereby removing thallium, and finally, flowing out of the sewage from the fourth-stage reaction tank 5, passing through a third conveying pipe 13, entering a sedimentation sloping plate 10 for sedimentation and separation, the thallium content in the effluent is lower than 0.1 mug/L, and the sulfide content in the effluent meets the standard, so that secondary pollution is avoided, and the thallium pollution is effectively solved.

In one embodiment, the first-stage reaction tank 2, the second-stage reaction tank 3, the third-stage reaction tank 4 and the fourth-stage reaction tank 5 have the same structure, a main stirring paddle 18 is arranged inside the first-stage reaction tank 2, a main stirring motor 14 is fixedly arranged at the center position of the top surface of the first-stage reaction tank 2, the top surface of the main stirring paddle 18 penetrates through the top surface of the first-stage reaction tank 2 and is connected with the output end of the main stirring motor 14, the first-stage dosing tank 6, the second-stage dosing tank 7, the third-stage dosing tank 8 and the fourth-stage dosing tank 9 have the same structure, an auxiliary stirring paddle 19 is arranged inside the first-stage dosing tank 6, an auxiliary stirring motor 15 is fixedly arranged at the center position of the top surface of the first-stage dosing tank 6, the top surface of the auxiliary stirring paddle 19 penetrates through the top surface of the first-stage dosing tank 6 and is connected with the output end of the auxiliary stirring motor 15, the common stirring driving structure is not described herein, the main stirring paddle 18 is arranged inside the first-stage reaction tank 2, the second-stage reaction tank 3, the third-stage reaction tank 4 and the fourth-stage reaction tank 5, drive by main agitator motor 14 and rotate, to one-level retort 2, second grade retort 3, tertiary retort 4 and 5 inside sewage of level four retort and medicament stir the mixture, the reaction process accelerates, thereby reaction rate is improved, in addition, one-level dosing tank 6, second grade dosing tank 7, tertiary dosing tank 8 and level four dosing tank 9 inside are provided with vice stirring rake 19, drive the rotation by vice agitator motor 15, be convenient for prepare the medicament, this device operation is simple, the design is nimble, can freely adjust as required, and can realize automaticly, it is more convenient to use.

In one embodiment, the surfaces of the first delivery pipe 11, the second delivery pipe 12 and the third delivery pipe 13 are connected with a delivery pump in a penetrating way, and the pipe diameters of the first delivery pipe 11, the second delivery pipe 12 and the third delivery pipe 13 are not less than 10cm, so that sewage can be conveniently delivered, and blockage can be avoided.

In an embodiment, the top surface of the first-stage medicine adding tank 6 is provided with a medicine adding port 16, and the top surface of the medicine adding port 16 is spirally connected with a blocking cover, so that medicine can be conveniently added.

In one embodiment, the main stirring paddle 18 and the auxiliary stirring paddle 19 are made of copper, and have relatively stable chemical properties, so that the corrosion of sewage is reduced.

In one embodiment, the first-level dosing tank 6, the second-level dosing tank 7, the third-level dosing tank 8 and the fourth-level dosing tank 9 are made of transparent materials, so that the capacity of the medicament can be observed conveniently, and the medicament can be added conveniently.

The working principle is as follows:

in the process of sewage treatment, sewage firstly enters an adjusting tank 1, after the water quantity and the water quality are adjusted through the adjusting tank 1, the sewage enters a first-stage reaction tank 2 through a first conveying pipe 11, a prepared 10% -20% lime milk or sodium hydroxide solution is contained in a first-stage dosing tank 6, dosing is carried out on the first-stage reaction tank 2 by adopting a metering pump 17, the pH is adjusted to 10-12, hydrolysis reaction is carried out, a chemical thallium removal agent is added into a second-stage dosing tank 7, for disclosing the agent, too much description is not given, dosing is carried out on the second-stage reaction tank 3 by using the metering pump 17, a biological thallium removal agent is added into a third-stage dosing tank 8 by using the third-stage dosing tank 17, for disclosing the agent, too much description is not given, the dosing is carried out on the third-stage reaction tank 4 by using the metering pump 17, a flocculating agent with the concentration of 1-2 thousandth is prepared by using a fourth-stage dosing tank 9, too much description is not given here for a common agent, dosing is carried out on the common agent by using the metering pump 17, after passing through the first-level reaction tank 2, sewage enters the second-level reaction tank 3, the third-level reaction tank 4 and the fourth-level reaction tank 5 through the second conveying pipe 12 in sequence, chemical reaction is carried out, thallium is removed, finally, the sewage after thallium removal flows out of the fourth-level reaction tank 5, the sewage enters the inclined plate sedimentation tank 10 through the third conveying pipe 13 for sedimentation separation, the thallium content in the effluent is lower than 0.1 mug/L, and the sulfide content in the effluent meets the standard, secondary pollution is avoided, and thallium pollution is effectively avoided.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A treatment device for removing heavy metal thallium from sewage is characterized by comprising an adjusting tank (1) and an inclined plate sedimentation tank (10), wherein a first-stage reaction tank (2), a second-stage reaction tank (3), a third-stage reaction tank (4) and a fourth-stage reaction tank (5) are arranged between the adjusting tank (1) and the inclined plate sedimentation tank (10), the adjusting tank (1) is communicated with the first-stage reaction tank (2) through a first conveying pipe (11), the first-stage reaction tank (2), the second-stage reaction tank (3), the third-stage reaction tank (4) and the fourth-stage reaction tank (5) are sequentially communicated with one another through a second conveying pipe (12), the fourth-stage reaction tank (5) is communicated with the inclined plate sedimentation tank (10) through a third conveying pipe (13), a first-stage dosing tank (6) is fixedly installed on the top surface of the first-stage reaction tank (2), and the bottom surface of the first-stage dosing tank (6) is communicated with the first-stage reaction tank (2) through a connecting pipe, second grade retort (3) top surface fixed mounting has second grade to add medicinal cupping (7), and second grade adds medicinal cupping (7) underrun connecting pipe and second grade retort (3) through connection, tertiary retort (4) top surface fixed mounting has tertiary medicinal cupping (8), and tertiary medicinal cupping (8) underrun connecting pipe and tertiary retort (4) through connection, level four retort (5) top surface fixed mounting has level four to add medicinal cupping (9), and level four adds medicinal cupping (9) underrun connecting pipe and level four retort (5) through connection to connecting pipe surface mounting has measuring pump (17).

2. The treatment device for removing the heavy metal thallium from the sewage according to claim 1, wherein the first-stage reaction tank (2), the second-stage reaction tank (3), the third-stage reaction tank (4) and the fourth-stage reaction tank (5) have the same structure, a main stirring paddle (18) is arranged inside the first-stage reaction tank (2), a main stirring motor (14) is fixedly arranged at the center of the top surface of the first-stage reaction tank (2), the top surface of the main stirring paddle (18) penetrates through the top surface of the first-stage reaction tank (2) to be connected with the output end of the main stirring motor (14), the first-stage dosing tank (6), the second-stage dosing tank (7), the third-stage dosing tank (8) and the fourth-stage dosing tank (9) have the same structure, an auxiliary stirring paddle (19) is arranged inside the first-stage dosing tank (6), and an auxiliary stirring motor (15) is fixedly arranged at the center of the top surface of the first-stage dosing tank (6), the top surface of the auxiliary stirring paddle (19) penetrates through the top surface of the first-stage dosing tank (6) and is connected with the output end of the auxiliary stirring motor (15).

3. The treatment device for removing the heavy metal thallium from the sewage according to claim 1, wherein the surfaces of the first delivery pipe (11), the second delivery pipe (12) and the third delivery pipe (13) are connected with a delivery pump, and the pipe diameters of the first delivery pipe (11), the second delivery pipe (12) and the third delivery pipe (13) are not less than 10 cm.

4. The treatment device for removing the heavy metal thallium in the sewage according to claim 1, wherein a chemical feeding port (16) is formed in the top surface of the primary chemical feeding tank (6), and a plugging cover is spirally connected to the top surface of the chemical feeding port (16).

5. The treatment device for removing the heavy metal thallium from the sewage according to claim 2, wherein the main stirring paddle (18) and the auxiliary stirring paddle (19) are both made of copper.

6. The treatment device for removing the heavy metal thallium in the sewage according to claim 1, wherein the first-stage dosing tank (6), the second-stage dosing tank (7), the third-stage dosing tank (8) and the fourth-stage dosing tank (9) are made of transparent materials.

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