Curtain type iron-carbon micro-electrolysis reactor

Abstract

The utility model relates to the technical field of iron-carbon micro-electrolysis, and particularly discloses a curtain type iron-carbon micro-electrolysis reactor which comprises a reaction container body and an end socket, the reaction container body is provided with a water inlet, an air inlet and a water outlet, a micro-electrolysis filler area is arranged in the reaction container body, the micro-electrolysis filler area comprises a plurality of rows of iron-carbon filler hanging curtains, and the iron-carbon filler hanging curtains are arranged on the end socket. Each row of iron-carbon filler hanging curtains is formed by arranging a plurality of single filler hanging curtains, a gap is formed between every two adjacent single filler hanging curtains, a plurality of filler area upper cross beams used for hanging the single filler hanging curtains are arranged in the reaction container body, and each single filler hanging curtain is formed by connecting a plurality of filler hanging baskets which are hung up and down; iron-carbon filler blocks are filled in the filler hanging basket, pores are formed in the surface of the filler hanging basket, and a manhole is formed in the side wall of the micro-electrolysis filler area. During wastewater treatment, the single filler curtain swings under the impact of water vapor, so that deposition of sludge on the surface of the iron-carbon filler block is reduced, surface passivation is delayed, and the service life of the iron-carbon filler block is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of iron-carbon micro-electrolysis, in particular to a curtain-type iron-carbon micro-electrolysis reactor. Background Art

[0002] The iron-carbon micro-electrolysis wastewater treatment process is widely used in the treatment of organic wastewater. Its advantage is wide adaptability. The biodegradability of most wastewaters is improved after iron-carbon micro-electrolysis treatment, which belongs to the wastewater pretreatment method. The principle of iron-carbon micro-electrolysis is the galvanic cell reaction. Under acidic conditions and air flow, countless galvanic cell reactions occur when wastewater passes through iron-carbon fillers. Organic matter in the wastewater that is easily oxidized and removed is degraded, and difficult-to-degrade organic matter is degraded into small molecules that are easy to biochemically treat, thereby improving the biodegradability of the wastewater. Micro-electrolysis fillers are sintered under high temperature conditions with iron powder, coal powder and additives, and their size is generally between 3-5 cm. The micro-electrolysis filler area of ​​existing iron-carbon micro-electrolysis reactors is generally fully filled with micro-electrolysis fillers. The iron-carbon fillers in the micro-electrolysis filler area during wastewater treatment are fixed, which will cause sludge to easily adhere to the surface of the iron-carbon filler, resulting in surface passivation and reducing the activity of the iron-carbon filler. The filler area of ​​some micro-electrolysis reactors is not entirely stacked with iron-carbon fillers, and there is a certain interval between the iron-carbon fillers, which can reduce the phenomenon of sludge adhesion on the surface of the iron-carbon filler. For example, the micro-electrolysis reactor disclosed in CN104591349A is suitable for micro-electrolysis reactors that are not exposed on the top. When the filler in the reactor is replaced, it is hoisted out as a whole. However, the requirements for wastewater treatment are getting higher and higher. In order to reduce the pollution of air by exhaust gas generated during wastewater treatment, wastewater treatment devices with bad odors and harmful gases need to collect and treat the gas and cannot be exposed. Utility Model Content

[0003] The utility model aims to solve the problem that sludge is easily attached to the surface of the iron-carbon filler in the micro-electrolysis reactor and surface passivation occurs, and provides a curtain-type iron-carbon micro-electrolysis reactor suitable for top sealing and on which sludge is not easily attached to the surface of the iron-carbon filler.

[0004] In order to solve the above technical problems, the utility model includes a reaction container body, the top of the reaction container body is connected to the head, the bottom side wall of the reaction container body is provided with a water inlet and an air inlet, the upper side wall of the reaction container body is provided with a water outlet, a micro-electrolysis filling area is provided in the reaction container body, the micro-electrolysis filling area is located in the space below the water outlet and above the water inlet and the air inlet, the head is provided with an air outlet, and its structural characteristics are: the micro-electrolysis filling area includes a plurality of rows of iron-carbon filling curtains, each row of the iron-carbon filling curtains is composed of a plurality of single filling curtains, and gaps are provided between adjacent single filling curtains, a plurality of filling area upper cross beams located below the water outlet and used for hanging single filling curtains are provided in the reaction container body, the single filling curtains are connected by a plurality of filling hanging baskets hung up and down, the filling hanging baskets are filled with iron-carbon filling blocks, and the surface of the filling hanging baskets is provided with pores smaller than the size of the iron-carbon filling blocks, and a manhole is provided on the side wall of the micro-electrolysis filling area.

[0005] After adopting the above structure, wastewater enters from the bottom of the reaction container body through the water inlet, and air is introduced into the reaction container body through the air inlet. After the wastewater and air enter the reaction container body and mix, they flow upward into the micro-electrolysis filler area. An iron-carbon filler curtain is provided in the micro-electrolysis filler area. The iron-carbon filler curtain is composed of a plurality of single filler curtains. An iron-carbon filler block is provided in the filler hanging basket of the single filler curtain. When the wastewater flows through the iron-carbon filler block, a primary battery reaction occurs. The easily degradable organic matter in the wastewater is oxidized and removed, and the large molecular organic matter that is difficult to degrade is degraded into small molecular organic matter that is easy to biochemically treat, thereby improving the biodegradability of the wastewater. The wastewater treated by micro-electrolysis is discharged through the water outlet, and the air introduced into the reaction container body is discharged centrally through the air outlet on the head. When wastewater and air flow upward in the reaction vessel body, they will impact the single-filling hanging curtains. There are gaps between the single-filling hanging curtains. The single-filling hanging curtains will sway under the impact of the wastewater and air mixture, reducing the deposition and attachment of sludge on the surface of the iron-carbon filling block, delaying the passivation time of the surface of the iron-carbon filling block, and extending the service life of the iron-carbon filling block. When installing or replacing the iron-carbon filling, enter the reaction vessel body from the manhole, and put the iron-carbon filling block into the filling hanging basket first. The filling hanging baskets of the single-filling hanging curtain are hung, and the filling hanging baskets can be hung from top to bottom in sequence. There is no need to remove the head to lift out the iron-carbon filling area as a whole. It is suitable for iron-carbon micro-electrolysis reactors with top seals.

[0006] The water inlet is connected to a water distribution pipeline for uniform water distribution. The water distribution pipeline includes a water inlet main pipe and a plurality of water distribution branches connected to the water inlet main pipe and extending toward the side wall of the reaction container body. The water distribution branches are provided with a plurality of water outlet holes.

[0007] The air inlet is connected to an air distribution pipeline for uniform air entry, the air distribution pipeline includes an air main pipe and a plurality of air distribution branch pipes connected to the air main pipe and extending toward the side wall of the reaction container body, a plurality of air outlet holes are provided on the air distribution branch pipes, the water distribution pipeline is located above the air distribution pipeline, and the micro-electrolysis filling area is located above the water distribution pipeline.

[0008] The upper end of the stuffing hanging basket is open, and the basket body of the stuffing hanging basket is formed by a plurality of vertical ribs and a plurality of transverse ribs interwoven vertically and horizontally. The open end of the stuffing hanging basket is connected to a hook through a plurality of draw ropes, and a hanging ring for hanging with the hook is provided at the bottom of the stuffing hanging basket.

[0009] A hanging ring for hanging with a hook is provided at the bottom of the upper cross beam of the filling area.

[0010] The bottom of the micro-electrolysis filling area is provided with multiple lower cross beams of the filling area for fixing the bottom end of the single filling curtain. The hanging ring at the bottom of the filling hanging basket at the lower end of the single filling curtain is connected to the lower cross beam of the filling area by a binding rope.

[0011] An overflow weir for uniform water discharge is provided on the upper part of the reaction container body.

[0012] The iron-carbon micro-electrolysis reactor of the utility model takes in water and air from the bottom, drains water from the upper part and exhausts air from the top. A plurality of rows of iron-carbon filler curtains composed of arranged single-filler curtains are arranged in the reactor. The single-filler curtains are formed by hanging a plurality of filler hanging baskets. The filler hanging baskets are filled with iron-carbon filler blocks. The upper end of the single-filler curtain is hung on the upper crossbeam of the filler area, and the lower end is tied to the lower crossbeam of the filler area to prevent the single-filler curtain from excessively shaking and causing entanglement. In the process of wastewater flowing upward, organic matter is removed or degraded under the catalytic action of the iron-carbon filler blocks; the single-filler curtain will swing to a certain extent under the impact of water vapor, so that sludge is not easy to deposit and adhere to the surface of the iron-carbon filler block, the passivation process of the iron-carbon filler block is delayed, and the service life of the iron-carbon filler block is extended; when installing the single-filler curtain, the hook is hung on the hanging ring, and when disassembling, the hook is removed from the hanging ring, without the need for overall disassembly and assembly, convenient for installation and replacement of fillers, and suitable for iron-carbon micro-electrolysis reactors with top sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 AA schematic diagram, the lower gas distribution pipeline is not shown in the figure;

[0015] Figure 3 for Figure 1 BB schematic diagram;

[0016] Figure 4 for Figure 1 Schematic diagram of CC;

[0017] Figure 5 for Figure 1 DD schematic diagram;

[0018] Figure 6 It is a schematic diagram of a stuffing hanging basket;

[0019] In the figure: 1. reaction vessel body; 11. water inlet; 12. air inlet; 13. first manhole; 14. second manhole; 15. water outlet; 2. end cap; 21. observation hole; 22. air outlet; 3. upper crossbeam of packing area; 31. first hanging ring; 4. lower crossbeam of packing area; 5. single packing hanging curtain; 51. packing hanging basket; 511. vertical ribs; 512. transverse ribs; 513. second hanging ring; 514. pull rope; 515. third hanging ring; 516. hook; 52. iron-carbon packing block; 6. water distribution pipeline; 61. water inlet main pipe; 62. water distribution branch pipe; 621. water outlet; 7. air distribution pipeline; 71. air main pipe; 72. air distribution branch pipe; 721. air outlet; 8. overflow weir; 81. drainage channel; 9. binding rope. DETAILED DESCRIPTION

[0020] Reference Figure 1-6 A curtain-type iron-carbon micro-electrolysis reactor comprises a reaction vessel body 1 and a head 2 fixedly connected to the top of the reaction vessel body 1. The bottom of the reaction vessel body 1 is provided with a water inlet system and an air inlet system. The upper part of the reaction vessel body 1 is provided with a drainage system. The head 2 is provided with an air outlet 22. The interior of the reaction vessel body 1 is provided with a micro-electrolysis packing area. The micro-electrolysis packing area is located in the space below the drainage system and above the water inlet system and the air inlet system. The micro-electrolysis packing area includes multiple rows of iron-carbon packing hanging curtains. Figure 1-3As shown, the water inlet system includes a water inlet 11 arranged on the bottom side wall of the reaction vessel body 1, the water inlet 11 is connected to a water distribution pipeline 6 for uniform water distribution, the water distribution pipeline 6 includes a water inlet main pipe 61, the side of the water inlet main pipe 61 is connected to multiple water distribution branch pipes 62 extending to the side wall of the reaction vessel body 1, and multiple water outlet holes 621 are opened on the water distribution branch pipe 62. The water inlet 11 is connected to the water inlet main pipe 61 through a pipeline. After the wastewater enters the water inlet main pipe 61 through the pipeline, it enters the water distribution branch pipe 62 and flows out from the water outlet hole 621. The wastewater enters and rises evenly on the cross section of the reaction vessel body 1, so that the rising speed of the wastewater at each position on the cross section of the micro-electrolysis filler area is roughly the same, thereby improving the wastewater treatment effect and the stability of the effluent water quality. The air intake system includes an air intake port 12 arranged on the bottom side wall of the reaction vessel body 1, and the air intake port 12 is connected to an air distribution pipeline 7 for uniform air intake. The air distribution pipeline 7 includes an air main pipe 71, and the side of the air main pipe 71 is connected to a plurality of air distribution branch pipes 72 extending toward the side wall of the reaction vessel body 1, and a plurality of air outlet holes 721 are provided on the air distribution branch pipe 72. The air intake port 12 is connected to the air main pipe 71 through a pipeline. After the air enters the air main pipe 71 through the pipeline, it enters the air distribution branch pipe 72 and is discharged from the air outlet holes 721, so that the air enters and rises uniformly in the cross section of the reaction vessel body 1, and the air and wastewater are mixed at the bottom of the reaction vessel body 1 and then flow upward into the micro-electrolysis packing area. Figure 1 The water inlet 11 is above the air inlet 12, the water distribution pipeline 6 is above the air distribution pipeline 7, and the micro-electrolysis filling area is above the water distribution pipeline 6. The air inlet 12 can also be arranged above the water inlet 11, and the air distribution pipeline 7 is arranged above the water distribution pipeline 6. Figure 1 As shown, a first manhole 13 for people to enter and exit is also provided on the side wall at the bottom of the reaction vessel body 1, and an observation hole 21 is also provided on the head 2. The observation hole 21 can be sealed with a flange, and the sealing flange can be made of a partially or fully transparent acrylic plate.

[0021] like Figure 1 , 4-6, the drainage system of the reactor includes a circle of overflow weirs 8 arranged on the upper part of the reaction vessel body 1, the overflow weir 8 is fixedly connected to the inner wall of the reaction vessel body 1 through a cross plate, the overflow weir 8 and the cross plate and the side wall of the reaction vessel body 1 form a drainage channel 81, and the side wall of the reaction vessel body 1 is provided with a water outlet 15 connected to the drainage channel 81, and the overflow weir 8 adopts a serrated weir plate, which is a conventional setting in the field. A plurality of upper cross beams 3 of the filling area for hanging iron-carbon filling curtains are arranged at the bottom of the drainage system. A plurality of single filling curtains 5 are hung on each upper cross beam 3 of the filling area. The plurality of single filling curtains 5 hung on each upper cross beam 3 of the filling area form a row of iron-carbon filling curtains. Gaps are arranged between adjacent single filling curtains 5 to leave space for the single filling curtains 5 to swing. The single filling curtains 5 are composed of a plurality of filling hanging baskets 51 hung up and down. The filling hanging baskets 51 are filled with one or more iron-carbon filling blocks 52. The upper end of the filling hanging baskets 51 is open for putting in and taking out the iron-carbon filling blocks 52. The surface of the filling hanging baskets 51 is provided with pores smaller than the size of the iron-carbon filling blocks 52. Figure 1 , 5 As shown, the basket body of the stuffing hanging basket 51 is formed by a plurality of vertical ribs 511 and a plurality of transverse ribs 512 interlaced vertically and horizontally. The open end of the stuffing hanging basket 51 is connected to a hook 516 through a plurality of drawstrings 514. Figure 5 There are three pull ropes 514 in the middle, which can also be designed as four, five or other numbers. Specifically, a third hanging ring 515 is fixedly connected to the bottom of the hook 516, one end of the pull rope 514 is fixedly connected to the third hanging ring 515, and the other end is fixedly connected to the transverse rib 512 at the open end of the stuffing hanging basket 51, and a second hanging ring 513 is fixedly connected to the bottom of the stuffing hanging basket 51, and the hook 516 is hung with the second hanging ring 513; the basket body of the stuffing hanging basket 51 can be made of hard or semi-hard plastic, such as PVC, PE; a plurality of first hanging rings 31 for hanging the top stuffing hanging basket 51 of the single stuffing hanging curtain 5 are provided at the bottom of the upper crossbeam 3 of the stuffing area; Figure 1As shown, the bottom of the micro-electrolysis packing area is provided with a plurality of lower cross beams 4 for fixing the bottom end of the single packing hanging curtain 5. Specifically, the second hanging ring 513 of the lowermost packing hanging basket 51 is fixedly connected to one end of the binding rope 9, and the other end of the binding rope 9 is fixedly connected to the lower cross beam 4 of the packing area. Fixing the bottom end of the single packing hanging curtain 5 can prevent the single packing hanging curtain 5 from excessively swinging and entangled under the impact of water vapor; a second manhole 14 is provided on the side wall of the micro-electrolysis packing area, and people enter and exit the reaction vessel body 1 through the second manhole 14 when installing and replacing the iron-carbon filler. The reaction vessel body 1, the head 2, the upper crossbeam 3 of the filling area, the lower crossbeam 4 of the filling area, and the overflow weir 8 can be made of glass fiber reinforced plastics or carbon steel for corrosion protection. The water distribution pipeline 6 and the gas distribution pipeline 7 are made of hard PVC pipes or PP pipes, and the pull rope 514 and the binding rope 9 are made of nylon ropes. The single-filler hanging curtain 5 can be disassembled and assembled in sections, because the single-filler hanging curtain 5 is filled with iron-carbon filler blocks 52, and the whole disassembly and assembly weight is large. When the height of the micro-electrolysis filler area is large, it can also be divided into multiple layers. An intermediate crossbeam is set between the upper crossbeam 3 of the filling area and the lower crossbeam 4 of the filling area to facilitate the disassembly and assembly of the iron-carbon filler. A manhole is set on the side wall of the reaction vessel body 1 for each layer.

[0022] Working process: When the wastewater is treated with iron-carbon filler, the wastewater is adjusted to acidity and then introduced into the reaction vessel body 1 from the water inlet 11. The wastewater is discharged through the water outlet 921 of the water distribution branch pipe 62 in the water distribution pipeline 6 and then enters the internal space of the reaction vessel body 1. At the same time, air is introduced from the air inlet 12, and the air is discharged through the air outlet 721 of the air distribution branch pipe 72 in the air distribution pipeline 7 and then enters the internal space of the reaction vessel body 1. The wastewater and air enter the bottom of the reaction vessel body 1 and mix, then flow upward into the micro-electrolysis filler area, and the distribution The water pipeline 6 includes a plurality of water distribution branch pipes 62, each of which is provided with a plurality of water outlet holes 621; the air distribution pipeline 7 includes a plurality of air distribution branch pipes 72, each of which is provided with a plurality of air outlet holes 721; wastewater and air enter and rise evenly in the cross section of the reaction vessel body 1, and the rising flow velocities at different positions are similar, which can improve the wastewater treatment effect and stabilize the effluent water quality; an overflow weir 8 is provided on the upper part of the reaction vessel body 1, which serves to evenly discharge water, and the air is discharged centrally through the air outlet 22 on the head 2. After the water vapor mixture formed by the wastewater and air enters the micro-electrolysis filler area, under the catalytic action of the iron-carbon filler block 52 in the filler hanging basket 51, the wastewater undergoes a primary battery reaction, the organic matter in the wastewater is removed and degraded, and the difficult-to-degrade organic matter is converted into small-molecule organic matter that is easy to biochemically treat, thereby improving the biodegradability of the wastewater; the water vapor has an impact effect on the single-filler hanging curtain 5, and the single-filler hanging curtain 5 swings and shakes. Under the scouring action of the water vapor, the sludge is not easy to deposit on the surface of the iron-carbon filler block 52, thereby delaying the passivation of the filler caused by sludge deposition and extending the life of the iron-carbon filler. When installing and removing the filler, a person enters the reaction vessel body 1 through the second manhole 14, and hangs the filler hanging basket 51 filled with iron-carbon filler blocks 52 from top to bottom in sequence to form a single filler hanging curtain 5. When hanging, the filler hanging baskets 51 can be hung one by one, or several pre-hanged filler hanging baskets 51 can be hung in sections, and then the filler hanging basket 51 at the lower end of the single filler hanging curtain 5 is connected to the lower cross beam 4 of the filling area with a binding rope 9 to prevent the single filler hanging curtain 5 from being entangled when swinging. The single filler hanging curtain 5 can be connected / disassembled in sections without taking and placing the micro-electrolysis filler area as a whole, which is suitable for a micro-electrolysis reactor with a top seal.

[0023] The micro-electrolysis filler area of ​​the micro-electrolysis reactor of the utility model is composed of a plurality of single-filler hanging curtains, each of which is formed by hanging a plurality of filler hanging baskets. The utility model is easy to install and disassemble, and is suitable for a micro-electrolysis reactor with a top seal. During wastewater treatment, the single-filler hanging curtain swings under the impact of water vapor, and sludge is not easily deposited on the surface of the iron-carbon filler block, thereby extending the life of the iron-carbon filler.

Claims

1. A curtain-type iron-carbon micro-electrolysis reactor, comprising a reaction vessel body (1), the top of the reaction vessel body (1) being connected to a head cover (2), a water inlet (11) and an air inlet (12) being provided on the bottom side wall of the reaction vessel body (1), a water outlet (15) being provided on the upper side wall of the reaction vessel body (1), a micro-electrolysis packing area being provided in the reaction vessel body (1), the micro-electrolysis packing area being located in the space below the water outlet (15) and above the water inlet (11) and the air inlet (12), the head cover (2) being provided with an air outlet (22), wherein: The micro-electrolysis filling area comprises a plurality of rows of iron-carbon filling curtains, each row of the iron-carbon filling curtains is composed of a plurality of single filling curtains (5) arranged in an array, and gaps are provided between adjacent single filling curtains (5). The reaction vessel body (1) is provided with a plurality of upper cross beams (3) of the filling area, which are arranged below the water outlet (15) and are used to hang the single filling curtains (5). The single filling curtains (5) are connected by a plurality of filling hanging baskets (51) hung up and down, the filling hanging baskets (51) are filled with iron-carbon filling blocks (52), and the surface of the filling hanging baskets (51) is provided with pores smaller than the size of the iron-carbon filling blocks (52). A manhole is provided on the side wall of the micro-electrolysis filling area.

2. The curtain-type iron-carbon micro-electrolysis reactor according to claim 1, characterized in that: The water inlet (11) is connected to a water distribution pipeline (6) for uniformly distributing water. The water distribution pipeline (6) comprises a water inlet main pipe (61) and a plurality of water distribution branch pipes (62) connected to the water inlet main pipe (61) and extending toward the side wall of the reaction container body (1). The water distribution branch pipes (62) are provided with a plurality of water outlet holes (621).

3. The curtain-type iron-carbon micro-electrolysis reactor according to claim 2, characterized in that: The air inlet (12) is connected to an air distribution pipeline (7) for uniform air entry, the air distribution pipeline (7) comprising an air main pipe (71) and a plurality of air distribution branch pipes (72) connected to the air main pipe (71) and extending toward the side wall of the reaction vessel body (1), the air distribution branch pipes (72) being provided with a plurality of air outlet holes (721), the water distribution pipeline (6) being located above the air distribution pipeline (7), and the micro-electrolysis filler area being located above the water distribution pipeline (6).

4. The curtain-type iron-carbon micro-electrolysis reactor according to claim 1, characterized in that: The upper end of the stuffing hanging basket (51) is open, and the basket body of the stuffing hanging basket (51) is formed by a plurality of vertical ribs (511) and a plurality of transverse ribs (512) interlaced vertically and horizontally. The open end of the stuffing hanging basket (51) is connected to a hook (516) via a plurality of drawstrings (514), and a hanging ring for hanging with the hook (516) is provided at the bottom of the stuffing hanging basket (51).

5. The curtain-type iron-carbon micro-electrolysis reactor according to claim 4, characterized in that: A hanging ring for hanging with a hook (516) is provided at the bottom of the upper cross beam (3) of the filling area.

6. The curtain-type iron-carbon micro-electrolysis reactor according to claim 5, characterized in that: The bottom of the micro-electrolysis filler area is provided with a plurality of filler area lower cross beams (4) for fixing the bottom end of the single filler hanging curtain (5), and the hanging ring at the bottom of the filler hanging basket (51) at the lower end of the single filler hanging curtain (5) is connected to the filler area lower cross beam (4) via a binding rope (9).

7. The curtain-type iron-carbon micro-electrolysis reactor according to claim 1, characterized in that: An overflow weir (8) for evenly discharging water is provided on the upper part of the reaction container body (1).

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