CN215102434U

CN215102434U - High concentration heavy metal wastewater treatment reactor

Info

Publication number: CN215102434U
Application number: CN202120515205.9U
Authority: CN
Inventors: 丁成; 兰馨辉
Original assignee: Changchun Gold Research Institute
Current assignee: Changchun Gold Research Institute
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-12-10
Anticipated expiration: 2031-03-11

Abstract

The utility model belongs to the technical field of wastewater innocent treatment reaction devices, in particular to a high-concentration heavy metal wastewater treatment reactor; the support legs are fixed at the bottom of the horizontal reactor main body, the interior of the horizontal reactor main body is divided into three areas, wherein one area is communicated with the second area, the second area is communicated with the third area, the first area is provided with an inlet, a dosing port, a high-speed stirrer and an emptying port, the second area is provided with a dosing port, a low-speed stirrer and an emptying port, the top of the third area is provided with an inclined plate filler mounting port and a gas discharging port, the bottom of the third area is fixedly provided with a sedimentation cone body communicated with the inclined plate filler mounting port, the cleaning aerator and the inclined plate filler are fixed in the third area, and the third area is provided with an overflow port; the design of a horizontal reactor of a primary vulcanization stirring, a secondary flocculation stirring and a tertiary sedimentation main body is adopted, and the high-concentration heavy metal wastewater treatment technology is expanded on equipment at a higher level; the method is used for treating high-concentration heavy metal wastewater by adopting a sulfide precipitation method under an acidic condition in the environment-friendly industry of gold mines.

Description

High concentration heavy metal wastewater treatment reactor

Technical Field

The utility model belongs to the technical field of waste water innocent treatment reaction unit, concretely relates to high concentration heavy metal wastewater treatment reactor.

Background

Heavy metal (such as cadmium, nickel, mercury, zinc and the like) waste water is one of industrial waste water which has the most serious environmental pollution and the most serious harm to human, and the water quality and the water quantity of the waste water are related to a production process. Heavy metals in wastewater generally cannot be decomposed and destroyed, and only can be transferred to the existing position and converted into the physical and chemical forms. The treatment method is usually a chemical precipitation method, an ion exchange method and the like, heavy metals in the treated water can be discharged or recycled when the discharge standard is lower than the discharge standard, and a new heavy metal concentrated product is formed and recycled or subjected to harmless treatment as much as possible. The sulfide precipitation method for treating the high-concentration heavy metal wastewater mainly comprises the steps of adding a pH regulator into the high-concentration heavy metal wastewater, adding soluble sulfide under a proper pH value condition for reaction until no precipitate is generated, and carrying out solid-liquid separation to obtain a precipitate and a supernatant. The industrial application of treating high-concentration heavy metal wastewater by a sulfide precipitation method needs to develop safer and more efficient integrated treatment equipment to replace the traditional stirring tank and sedimentation tank treatment equipment, so that the transportation and the maintenance are convenient, and the occupied area is reduced.

Disclosure of Invention

In order to overcome the problems, the utility model provides a high-concentration heavy metal wastewater treatment reactor, which aims at realizing the treatment of high-concentration heavy metal wastewater by a sulfide precipitation method under the condition of proper PH value, takes an integrated, safe and efficient environment-friendly treatment reactor as a research object, and adopts the design of a horizontal reactor of a primary vulcanization stirring body, a secondary flocculation stirring body and a tertiary sedimentation main body, so that the high-concentration heavy metal wastewater treatment technology is expanded at higher level and higher level on equipment; the method is used for treating high-concentration heavy metal wastewater by adopting a sulfide precipitation method under an acidic condition in the environment-friendly industry of gold mines.

A high concentration heavy metal wastewater treatment reactor comprises a support leg 1, a horizontal reactor main body 2, a first-stage clapboard 21, a second-stage clapboard 22, a first-stage high-speed stirrer 3, a second-stage low-speed stirrer 4, an inclined plate filler 5, a cleaning aerator 7 and a sedimentation cone 210, wherein the support leg 1 is fixed at the bottom of the horizontal reactor main body 2, the first-stage clapboard 21 and the second-stage clapboard 22 which are fixed inside the horizontal reactor main body 2 divide the inside of the horizontal reactor main body 2 into three areas, namely a first-stage vulcanization stirring area 217, a second-stage flocculation stirring area 218 and a third-stage sedimentation area 219, wherein the first-stage vulcanization stirring area 217 and the second-stage flocculation stirring area 218 are communicated through a first-stage overflow pipe 212, the second-stage flocculation stirring area 218 and the third-stage sedimentation area 219 are communicated through a second-stage overflow pipe 211, and the top of the first-stage vulcanization stirring area 217 is provided with a cyanide-containing wastewater inlet 24, a chemical feeding port 25 and the first-stage high-speed stirrer 3, the bottom of the first-stage vulcanization stirring area 217 is provided with a first emptying port 213, the top of the second-stage flocculation stirring area 218 is provided with a flocculant feeding port 26 and a second-stage low-speed stirrer 4, the bottom of the second-stage flocculation stirring area 218 is provided with a second emptying port 220, the top of the third-stage sedimentation area 219 is provided with an inclined plate filler mounting port 215 and a gas discharge port 27, the bottom of the third-stage sedimentation area 219 is fixedly connected with a sedimentation cone 210, the sedimentation cone 210 is communicated with the third-stage sedimentation area 219, the cleaning aerator 7 is fixed at the bottom of the third-stage sedimentation area 219 and is positioned above the sedimentation cone 210, the inclined plate filler 5 is arranged in the third-stage sedimentation area 219 and is positioned above the cleaning aerator 7, the third-stage sedimentation area 219 is provided with an overflow port 28, the height of the overflow port 28 is higher than that of the inclined plate filler 5, and the side wall of the sedimentation cone 210 is provided with a sewage discharge port 29.

The bottoms of the first-stage vulcanization stirring area 217 and the second-stage flocculation stirring area 218 are respectively provided with a gas aerator 8, and turbulent plates 23 are arranged in the first-stage vulcanization stirring area 217 and the second-stage flocculation stirring area 218.

The first-stage overflow pipe 212 is fixed above the first-stage partition plate 21, the left end of the first-stage overflow pipe extends into the first-stage vulcanization stirring area 217 and is positioned above the turbulent flow plate 23 in the first-stage vulcanization stirring area 217, and the right end of the first-stage overflow pipe inclines downwards and extends into the second-stage flocculation stirring area 218 and is positioned above the stirring impeller of the second-stage low-speed stirrer 4.

The second-stage overflow pipe 211 is fixed above the second-stage partition plate 22, the left end of the second-stage overflow pipe extends into the second-stage flocculation stirring area 218, the second-stage overflow pipe is positioned above the turbulence plate 23 in the second-stage flocculation stirring area 218, and the right end of the second-stage overflow pipe is inclined downwards and extends into the inclined plate packing 5 in the third-stage settling area 219.

The top of the first-stage vulcanization stirring area 217 and the top of the second-stage flocculation stirring area 218 are both provided with high-speed stirring system mounting openings 214, and the first-stage high-speed stirrer 3 and the second-stage low-speed stirrer 4 respectively extend into the first-stage vulcanization stirring area 217 and the second-stage flocculation stirring area 218 through the two high-speed stirring system mounting openings 214 and are respectively fixed on the horizontal reactor main body 2 at the two high-speed stirring system mounting openings 214.

And the side surfaces of the horizontal reactor main body 2 in which the first-stage vulcanization stirring area 217, the second-stage flocculation stirring area 218 and the third-stage settling area 219 are located are provided with overhaul inlets 216.

The supporting leg 1 comprises a supporting leg 11, two supporting legs 12 and three supporting legs 13, wherein one supporting leg 11 is fixed at the bottom of the horizontal reactor main body 2 of the first-stage vulcanization stirring area 217, one side of each of the two supporting legs 12 is fixed at the bottom of the horizontal reactor main body 2 of the second-stage flocculation stirring area 218, the other side of each of the two supporting legs is fixed at the bottom of the sedimentation cone 210, one side of each of the three supporting legs 13 is fixed at the bottom of the sedimentation cone 210, and the other side of each of the three supporting legs is fixed at the bottom of the horizontal reactor main body 2 of the third-stage sedimentation area 219.

The utility model has the advantages that:

the reactor meets the industrial application of treating high-concentration heavy metal wastewater by a sulfide precipitation method under the condition of proper pH value, integrates the harmless reaction and the sedimentation process of the high-concentration heavy metal wastewater into integrated equipment, reduces the process links, reduces the equipment floor area investment, is convenient for management and operation, is safer and more efficient, and has certain promotion effect on the development of environment-friendly treatment engineering of the high-concentration heavy metal wastewater in the gold industry.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of a part of the structure of the present invention

Wherein: 1-a support leg; 2-horizontal reactor body; 3-a first-level high-speed stirring system; 4-a second-stage low-speed stirring system; 5, filling materials by an inclined plate; 6-a filler support; 7, cleaning an aerator; 8-gas aerator; 11-a leg; 12-two legs; 13-three legs; 21-first stage partition board; 22-secondary partition; 23-a turbulent flow plate; 24-wastewater inlet; 25-a medicine adding port; 26-a flocculating agent feeding port; 27-gas vent; 28-overflow port; 29-a sewage draining outlet; 210 — subside vertebral body; 211-secondary overflow pipe; 212-primary overflow pipe; 213-evacuation; 214-stirring system mounting port; 215-inclined plate filler mounting port; 216 — service population; 217-first-stage vulcanization stirring area; 218-a secondary flocculation stirring zone; 219-third stage settling zone; 31-a stirrer; 32-agitator support; and 33, driving a motor reducer.

Detailed Description

A high-concentration heavy metal wastewater treatment reactor comprises supporting legs 1, a horizontal reactor main body 2, a first-stage clapboard 21, a second-stage clapboard 22, a first-stage high-speed stirrer 3, a second-stage low-speed stirrer 4, an inclined plate filler 5, a cleaning aerator 7 and a sedimentation cone 210, wherein the supporting legs 1 are fixed at the bottom of the horizontal reactor main body 2, the horizontal reactor main body 2 is internally divided into three areas including a first-stage vulcanization stirring area 217, a second-stage flocculation stirring area 218 and a third-stage sedimentation area 219 by the first-stage clapboard 21 and the second-stage clapboard 22 which are fixed in the horizontal reactor main body 2, the first-stage vulcanization stirring area 217 is communicated with the second-stage flocculation stirring area 218 through a first-stage overflow pipe 212, the second-stage flocculation stirring area 218 is communicated with the third-stage sedimentation area 219 through a second-stage overflow pipe 211, and the horizontal reactor main body 2 at the top of the first-stage vulcanization stirring area 217 is provided with a cyanide-containing wastewater inlet 24, a second-stage flocculation stirring area 219, A dosing port 25 and a first-stage high-speed stirrer 3, a first emptying port 213 is arranged on a horizontal reactor main body 2 at the bottom of a first-stage vulcanization stirring area 217, a flocculant dosing port 26 and a second-stage low-speed stirrer 4 are arranged on the horizontal reactor main body 2 at the top of a second-stage flocculation stirring area 218, a second emptying port 220 is arranged on the horizontal reactor main body 2 at the bottom of the second-stage flocculation stirring area 218, an inclined plate filler mounting port 215 and a gas discharge port 27 are arranged on the horizontal reactor main body 2 at the top of a third-stage settling area 219, a settling cone 210 is fixedly connected to the horizontal reactor main body 2 at the bottom of the third-stage settling area 219 and is communicated with the third-stage settling area 219, a cleaning aerator 7 is fixed on the horizontal reactor main body 2 at the bottom of the third-stage settling area 219 and is positioned above the settling cone 210, an inclined plate filler 5 is fixedly arranged in the third-stage settling area 219 and is positioned above the cleaning aerator 7, an overflow port 28 is arranged on the side wall of the horizontal reactor main body 2 of the third-stage settling zone 219, the height of the overflow port 28 is higher than that of the inclined plate packing 5, and a drain outlet 29 is arranged at the bottom end of the side wall of the settling cone 210.

The bottom of the horizontal reactor main body 2 of the first-stage vulcanization stirring area 217 and the second-stage flocculation stirring area 218 is respectively provided with a gas aerator 8, and turbulent plates 23 are arranged in the first-stage vulcanization stirring area 217 and the second-stage flocculation stirring area 218. The side wall of the horizontal reactor main body 2 at the left end of the first-stage vulcanization stirring area 217 is provided with a turbulent flow plate 23, the first-stage partition plate 21 at the right end of the first-stage vulcanization stirring area 217 is also provided with the turbulent flow plate 23, the first-stage partition plate 21 at the left end of the second-stage flocculation stirring area 218 is provided with the turbulent flow plate 23, and the second-stage partition plate 22 at the right end of the second-stage flocculation stirring area 218 is also provided with the turbulent flow plate 23.

The horizontal reactor main body 2 at the top of the first-stage vulcanization stirring area 217 and the horizontal reactor main body 2 at the top of the second-stage flocculation stirring area 218 are both provided with high-speed stirring system mounting ports 214, and the first-stage high-speed stirrer 3 and the second-stage low-speed stirrer 4 respectively extend into the first-stage vulcanization stirring area 217 and the second-stage flocculation stirring area 218 through the two high-speed stirring system mounting ports 214 and are respectively fixed on the horizontal reactor main body 2 at the two high-speed stirring system mounting ports 214.

The structure of one-level high-speed stirrer 3 is the same as that of second grade low-speed stirrer 4, and all include stirring wheel 31, stirrer support 32 and gear motor 33, wherein stirring wheel 31 is connected in gear motor 33's drive shaft, and is rotatory by gear motor 33 drive, and stirrer support 32 overlaps and fixes outside gear motor 33, and stirring wheel 31 stretches into in one-level vulcanization stirring district 217 or second grade flocculation stirring district 218 through high-speed stirring system installing port 214, and stirrer support 32 fixes on horizontal reactor main part 2 of high-speed stirring system installing port 214 department.

Example 1

Referring to fig. 1 and 2, the present invention adopts a design of a first-stage vulcanization stirring, a second-stage flocculation stirring and a third-stage sedimentation main body horizontal reactor, and comprises a third-stage support leg 1, a horizontal reactor main body 2, a first-stage high-speed stirrer 3, a second-stage low-speed stirrer 4, an inclined plate filler 5, a filler support 6, a cleaning aerator 7 and a gas aerator 8; wherein the three-stage supporting leg 1 comprises a supporting leg 11, a two-stage supporting leg 12 and a three-stage supporting leg 13; the horizontal reactor main body 2 is of a middle cylinder two-end sealing head structure, a first-stage clapboard 21 and a second-stage clapboard 22 are arranged in the horizontal reactor main body 2, the inside of the horizontal reactor main body 2 is divided into a first-stage vulcanization stirring area 217, a second-stage flocculation stirring area 218 and a third-stage sedimentation area 219 by the first-stage clapboard 21 and the second-stage clapboard 22, the side surfaces of three subarea shells are all provided with maintenance population 216, the first-stage clapboard 21 and the second-stage clapboard 22 are respectively provided with a first-stage overflow pipe 212 and a second-stage overflow pipe 211, the horizontal reactor first-stage vulcanization stirring area 217 and the second-stage flocculation stirring area 218 are internally provided with a turbulence plate 23, the shell of the first-stage vulcanization stirring area 217 is provided with a cyanide-containing wastewater inlet 24, a dosing port 25, a first-stage high-speed stirring system mounting port 214 and a drainage port 213, the shell of the second-stage flocculation stirring area 218 is provided with a flocculant dosing port 26, a second-low-speed stirring system mounting port 214 and a drainage port 213, and the shell of the third-stage sedimentation area 219 is provided with a gas drainage port 27, The overflow port 28 and the inclined plate filler mounting port 215 are arranged, the bottom of the third-stage settling zone 219 is a settling cone 210, the side surface of the settling cone 210 at the bottom of the third-stage settling zone 219 is provided with a sewage outlet 29, and the first-stage high-speed stirrer 3 and the second-stage low-speed stirrer 4 comprise a stirring wheel 31, a stirrer support 32 and a speed reduction motor 33; the horizontal reactor main body 2 is arranged on the supporting legs 1, the first-stage high-speed stirrer 3 is arranged in a first-stage vulcanization stirring area 217 of the horizontal reactor through a first-stage high-speed stirring system mounting port 214, the second-stage low-speed stirrer 4 is arranged in a second-stage flocculation stirring area 218 of the horizontal reactor through a second-stage low-speed stirring system mounting port 214, the inclined plate filler 5 is arranged in a third-stage sedimentation area 219 of the horizontal reactor main body through a filler support 6, the cleaning aerator 7 is arranged on the upper portion of a sedimentation cone 210 at the lower portion of the filler support 6, a second-stage overflow pipe 211 penetrates through the inclined plate filler 5, the bottoms of the first-stage high-speed stirrer 3 and the second-stage low-speed stirrer 4 are provided with the gas aerator 8, and the two supporting legs 12 and the three supporting legs 13 form a closed space with the sedimentation cone 210 of the third-stage sedimentation area 219 of the horizontal reactor main body 2.

The utility model discloses the working process:

firstly, high-concentration heavy metal wastewater is added into a primary vulcanization stirring area 217 through a cyanide-containing wastewater inlet 24, a primary high-speed stirrer 3 is started, a PH regulator is added into the primary vulcanization stirring area 217 through a drug adding port 25 to adjust the PH value, meanwhile, sulfide is added through another drug adding port 25, a speed reduction motor 33 drives a stirring wheel 31 to be combined with an internal turbulent flow plate 23 to realize uniform and rapid mixing reaction of cyanide-containing wastewater, the PH regulator, the sulfide and other medicaments, liquid which is fully mixed and reacted enters the upper part of a stirrer of a secondary low-speed stirrer 4 of a secondary flocculation stirring area 218 through a primary overflow pipe 212 arranged on a primary partition plate 21, the secondary low-speed stirrer 4 is started, a flocculating agent is added through a flocculating agent adding port 26, a driving motor speed reducer of the secondary low-speed stirrer 4 is used for driving the stirrer to be combined with the internal turbulent flow plate to realize flocculating and mixing reaction of the flocculating agent and the liquid, liquid which is fully subjected to flocculation mixing reaction enters the inclined plate filler 5 in the third-stage settling zone 219 through a second-stage overflow pipe 211 arranged on the second-stage partition plate 22 and begins to diffuse to the bottom of the filler support 6, the diffused liquid is subjected to sulfide settling under the effect of the inclined plate filler 5 to realize heavy metal settling of high-concentration heavy metal wastewater, supernatant liquid is upwards conveyed along the inclined plate filler 5 and is discharged through an overflow port 28 for recycling of the next process, generated heavy metal sediments downwards enter the settling cone 210 at the bottom of the third-stage settling zone 219 and are discharged through a discharge port 29 for further solid-liquid separation; the inclined plate filler 5 is precipitated and hardened after long-time working, the cleaning aerator 7 is started to start aeration in the sedimentation area to clean the inclined plate filler 5, so that the precipitate falls off and enters the sedimentation cone 210 at the bottom of the third-stage sedimentation area 219, and cleaning gas is discharged from the gas discharge port 27; the gas aerators 8 of the first-stage vulcanization stirring area 217 and the second-stage flocculation stirring area 218 can be aerated to promote the vulcanization reaction; when the inside of the equipment is overhauled, the evacuation port 213 and the drain port 29 are opened, the reactants and the like are discharged out of the horizontal reactor main body 2, and the overhaul population 216 is opened to perform equipment maintenance.

Claims

1. A high-concentration heavy metal wastewater treatment reactor is characterized by comprising supporting legs (1), a horizontal reactor main body (2), a first-stage clapboard (21), a second-stage clapboard (22), a first-stage high-speed stirrer (3), a second-stage low-speed stirrer (4), an inclined plate filler (5), a cleaning aerator (7) and a sedimentation cone body (210), wherein the supporting legs (1) are fixed at the bottom of the horizontal reactor main body (2), the horizontal reactor main body (2) is internally divided into a first-stage vulcanization stirring area (217), a second-stage flocculation stirring area (218) and a third-stage sedimentation area (219) by the first-stage clapboard (21) and the second-stage clapboard (22) which are fixed in the horizontal reactor main body (2), the first-stage vulcanization stirring area (217) is communicated with the second-stage flocculation stirring area (218) through a first-stage overflow pipe (212), and the second-stage flocculation stirring area (218) is communicated with the third-stage sedimentation area (219) through a second-stage overflow pipe (211), the top of the first-stage vulcanization stirring area (217) is provided with a cyanide-containing wastewater inlet (24), a dosing port (25) and a first-stage high-speed stirrer (3), the bottom of the first-stage vulcanization stirring area (217) is provided with a first emptying port (213), the top of the second-stage flocculation stirring area (218) is provided with a flocculant dosing port (26) and a second-stage low-speed stirrer (4), the bottom of the second-stage flocculation stirring area (218) is provided with a second emptying port (220), the top of the third-stage sedimentation area (219) is provided with an inclined plate filler mounting port (215) and a gas discharge port (27), the bottom of the third-stage sedimentation area (219) is fixedly connected with a sedimentation cone body (210), the sedimentation cone body (210) is communicated with the third-stage sedimentation area (219), a cleaning aerator (7) is fixed at the bottom of the third-stage sedimentation area (219) and is positioned above the sedimentation cone body (210), an inclined plate filler (5) is arranged in the third-stage sedimentation area (219) and is positioned above the cleaning aerator (7), an overflow port (28) is arranged on the third-stage sedimentation zone (219), the height of the overflow port (28) is higher than that of the inclined plate packing (5), and a sewage outlet (29) is arranged on the side wall of the sedimentation cone body (210).

2. The high concentration heavy metal wastewater treatment reactor according to claim 1, characterized in that the bottoms of the first stage sulfurization stirring area (217) and the second stage flocculation stirring area (218) are respectively provided with a gas aerator (8), and turbulent flow plates (23) are arranged in the first stage sulfurization stirring area (217) and the second stage flocculation stirring area (218).

3. The high concentration heavy metal wastewater treatment reactor according to claim 2, characterized in that the primary overflow pipe (212) is fixed above the primary partition (21), and the left end thereof extends into the primary vulcanization stirring zone (217) and is positioned above the turbulent flow plate (23) in the primary vulcanization stirring zone (217), and the right end thereof is inclined downwards and extends into the secondary flocculation stirring zone (218) and is positioned above the stirring impeller of the secondary low speed stirrer (4).

4. The high concentration heavy metal wastewater treatment reactor according to claim 3, characterized in that the secondary overflow pipe (211) is fixed above the secondary partition (22), and the left end thereof extends into the secondary flocculation stirring zone (218) and is positioned above the turbulent flow plate (23) in the secondary flocculation stirring zone (218), and the right end thereof is inclined downwards and extends into the inclined plate packing (5) in the tertiary sedimentation zone (219).

5. The high-concentration heavy metal wastewater treatment reactor according to claim 4, wherein the top of the primary sulfurization stirring area (217) and the top of the secondary flocculation stirring area (218) are both provided with high-speed stirring system mounting ports (214), and the primary high-speed stirrer (3) and the secondary low-speed stirrer (4) respectively extend into the primary sulfurization stirring area (217) and the secondary flocculation stirring area (218) through the two high-speed stirring system mounting ports (214) and are respectively fixed on the horizontal reactor main body (2) at the two high-speed stirring system mounting ports (214).

6. The high-concentration heavy metal wastewater treatment reactor according to claim 5, characterized in that the side of the horizontal reactor main body (2) where the primary sulfurization stirring zone (217), the secondary flocculation stirring zone (218) and the tertiary sedimentation zone (219) are located is provided with an access inlet (216).

7. The high concentration heavy metal wastewater treatment reactor according to claim 6, wherein the leg (1) comprises one leg (11), two legs (12) and three legs (13), wherein one leg (11) is fixed at the bottom of the horizontal reactor body (2) of the primary sulfurization stirring zone (217), one side of the two legs (12) is fixed at the bottom of the horizontal reactor body (2) of the secondary flocculation stirring zone (218), the other side of the two legs is fixed at the bottom of the sedimentation cone (210), one side of the three legs (13) is fixed at the bottom of the sedimentation cone (210), and the other side of the three legs is fixed at the bottom of the horizontal reactor body (2) of the tertiary sedimentation zone (219).