CN114558444B

CN114558444B - Biological trickling filter

Info

Publication number: CN114558444B
Application number: CN202210186382.6A
Authority: CN
Inventors: 邵永富; 胡波; 费金波
Original assignee: Zhejiang Chuanning Environmental Protection Technology Co ltd
Current assignee: Zhejiang Chuanning Environmental Protection Technology Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2023-03-24
Anticipated expiration: 2042-02-28
Also published as: CN114558444A

Abstract

The invention provides a biological trickling filtration tower which comprises a tower body and a first circulating pump, wherein a first accommodating pool for accommodating liquid is arranged at the bottom of an inner cavity of the tower body, a first water pipe is arranged on the side wall of the tower body, one end of the first water pipe is communicated with the first accommodating pool, one end of the first water pipe, which is far away from the first accommodating pool, is communicated with the first circulating pump, the first circulating pump is communicated with the top of the inner cavity of the tower body through a second water pipe, a first air inlet pipe is arranged on the side wall of the lower end of the tower body, a first exhaust pipe is arranged at the top of the tower body, a first accommodating cavity is also arranged in the inner cavity of the tower body, a first support and a second support are rotatably connected in the first accommodating cavity, a plurality of packing frame structures are arranged between the first support and the second support at intervals along the height direction of the tower body, and a first motor for driving the first support, the second support and the packing frame structures to rotate circumferentially in the first accommodating cavity is arranged on the tower body.

Description

Biological trickling filter

Technical Field

The invention relates to the field of malodorous gas biological treatment equipment, in particular to a biological trickling filter.

Background

The biological trickling filter, also called fixed film biological scrubber, has a structure similar to that of the biological filter, except that a spraying system is arranged at the top, the liquid which is continuously sprayed drops downwards through the surface of the porous filler, the spraying liquid often contains nutrient substances required by the growth of microorganisms, and the humidity and the pH value in the equipment are controlled accordingly, and the method of continuously circulating the liquid enables most pollutants to be dissolved in the liquid. The biological trickling filter is internally and additionally provided with the filler attached with microorganisms, so that conditions are provided for the growth of the microorganisms and the degradation of organic matters, and the adopted filler is an inert material which cannot be degraded by the microorganisms, such as polypropylene pellets, ceramics, charcoal, granular activated carbon and the like, so that the possibility of prolonging the service life of the filler and reducing the pressure drop is provided. Due to its superiority in deodorization, the biotrickling filter has been the focus of domestic and foreign research, and the netherlands developed in 1992 for treating high-concentration, acid-containing components. The method for removing the toluene by Levenrkusencai achieves good effect.

At present biological trickling filter generally can set up longitudinal separation in the tower body and set up the multilayer filler frame, can place the filler in the filler frame, and after the water droplet that is located the top of the tower fell on the filler frame, water can ooze filler top-down and permeate layer by layer until dripping to the reflux pool of bottom of the tower in. Although this structure can effectively purify the foul gas in the column body, the structure is also liable to cause clogging of the packing. The water rich in microorganisms permeates from the top of the tower body layer by layer from top to bottom, and when water flows permeate the filler, substances in the filler flow into the filler of the next layer along with water drops. This leads to the rivers to flow into the packing layer below the tower body more, and the clearance between the filler granule of bottom under the easy jam more, and this just holds and leads to the filler to block up, and then leads to whole trickling filtration tower to filter normally.

Disclosure of Invention

The invention provides a bio-trickling filter, wherein a filler frame in the trickling filter can be turned up and down, so that a filler originally positioned at the bottom of a tower body is turned to the top of the tower body, and the phenomenon of filler blockage in the tower body is effectively relieved.

The invention discloses a biotrickling filter, which comprises a tower body and a first circulating pump, wherein a first containing pool for containing liquid is arranged at the bottom of an inner cavity of the tower body, a first water pipe is arranged on the side wall of the tower body, one end of the first water pipe is communicated with the first containing pool, one end of the first water pipe, far away from the first containing pool, is communicated with the first circulating pump, the first circulating pump is communicated with the top of the inner cavity of the tower body through a second water pipe, a first air inlet pipe is arranged on the side wall of the lower end of the tower body, a first exhaust pipe is arranged at the top of the tower body, a first containing cavity is also arranged in the inner cavity of the tower body, a first support and a second support are rotatably connected in the first containing cavity, a plurality of filler frame structures are arranged between the first support and the second support at intervals along the height direction of the tower body, and a first motor for driving the first support, the second support and the filler frame structures to rotate in the first containing cavity in the circumferential direction is arranged on the tower body.

Compared with the existing bio-trickling filter on the market, the technical scheme can effectively slow down the phenomenon of filler blockage. When water drops gradually flow from the top of the tower body to the first accommodating tank at the bottom of the tower bottom, the water drops must flow through the filler in each filler frame, and the filler at the bottom of the tower bottom is inevitably blocked. However, trickling filter among this technical scheme, after operation a period, first motor can order about first support, second support and condiment frame structure all rotate 180, the filled frame that is located bottom of the tower bottom originally this moment can overturn to the tower body top, and the filled frame that is located the tower body top originally can overturn to the tower body bottom, from this point on, the circulating liquid that will prevent to have several layers of filler continuously drips to lie in the filled frame of bottom of the tower bottom, also can prevent that the circulating liquid from excessively scouring to the filler in the filled frame of bottom simultaneously, keep the certain biomembrane quantity in filler surface in the filled frame of bottom, thereby improve deodorization efficiency.

As a preference: the packing frame structure comprises a first packing frame, a second packing frame and a third packing frame which are sequentially arranged between a first bracket and a second bracket from top to bottom, wherein the first packing frame, the second packing frame and the third packing frame are filled with packing, one side of the first packing frame is fixedly connected with the side wall of the upper end of the first bracket, the first packing frame is far away from the upper end side wall of the fixed connection second support on one side of the first support, the middle section side wall of the fixed connection first support on one side of the second packing frame is far away from the middle section side wall of the fixed connection second support on one side of the first support, the lower end side wall of the fixed connection first support on one side of the third packing frame is far away from the lower end side wall of the fixed connection second support on one side of the first support. In this technical scheme, because first packing frame, second packing frame, third packing frame both sides and first support, second support between equal fixed connection, consequently when first support and second support carry out circumferential direction by first motor drive, first packing frame, second packing frame and third packing frame also can carry out circumferential direction thereupon.

As a preference: a first rotating shaft is arranged at the center of the end surface of one side of the first bracket far away from the second bracket, a first groove which can be embedded by the first rotating shaft and can rotate circumferentially in the first groove is arranged on the inner side wall of the first accommodating cavity, A second rotating shaft is arranged at the center of the end face, far away from the first support, of the second support, and one end, far away from the second support, of the second rotating shaft penetrates through the side wall of the tower body and then is fixedly connected with the power output end of the first motor. In this technical scheme, be integrated into one piece between first support and the first pivot, be integrated into one piece between second support and the second pivot. When the first motor drives the second support to rotate in the circumferential direction for 180 degrees in the first accommodating cavity, the first support can also rotate 180 degrees along with the second support, and meanwhile, the first filling frame, the second filling frame and the third filling frame which are positioned between the first support and the second support can also turn 180 degrees along with the first filling frame. The first filler frame that originally lies in the tower body top can be overturned to the tower body bottom, and the third filler frame that originally lies in the tower body bottom can be overturned to the tower body top.

As a preference: the first support and the second support are disc-shaped structures with the same size and shape, the radial width from the left end face of the first packing frame to the right end face is smaller than the radial width from the left end face of the second packing frame to the right end face, the radial width from the left end face of the third packing frame to the right end face is smaller than the radial width from the left end face of the second packing frame to the right end face, the left end face of the first packing frame, the left end face of the second packing frame and the left end face of the third packing frame are flush with the first support and the outer peripheral wall of the second support, and the right end face of the first packing frame, the right end face of the second packing frame and the right end face of the third packing frame are flush with the first support and the outer peripheral wall of the second support.

As a preference: the radial width from the left end face to the right end face of the first packing frame is equal to the radial width from the left inner side wall to the right inner side wall of the first accommodating cavity, and the radial width from the left end face to the right end face of the third packing frame is equal to the radial width from the left inner side wall to the right inner side wall of the first accommodating cavity. In this technical scheme, because the horizontal radial width of first packing frame, the horizontal radial width of third packing frame all are the same with the horizontal radial width in first holding chamber, consequently each drip that drips from the tower body top all can pass the first holding pond in three-layer packing frame arrival tower body bottom. The filtration and purification effects of the trickling filtration tower are ensured while the turnover of the filler frame structure is realized.

As a preference: first holding chamber left side inside wall is provided with and supplies first support left side, the second support left side, first packing frame left side, embedding and the gliding first arcuation recess wherein in second packing frame left side and third packing frame left side, first holding chamber right side inside wall is provided with and supplies first support right side, the second support right side, first packing frame right side, embedding and the gliding second arcuation recess wherein in second packing frame right side and third packing frame right side, all leave first clearance between first support periphery wall and second support periphery wall and the first arcuation recess, all leave the second clearance between first support periphery wall and second support periphery wall and the second arcuation recess. When water drops on the first holder and the second holder, the water slides into the first gap and the second gap along the first holder peripheral wall and the second holder peripheral wall, thereby achieving the effect of sealing the first gap and the second gap.

As a preference: the width of the first gap and the second gap is 2 mm.

As a preference: the tower body top is provided with second holding chamber, second holding chamber lower extreme and first holding chamber upper end intercommunication, second holding chamber top is provided with first inlet tube, first inlet tube upper end is passed the tower body top and is kept away from first circulating pump one end fixed connection with the second water pipe, a plurality of third water pipes have still been laid in the second holding intracavity, second water pipe one end intercommunication is all kept away from with first inlet tube to every third water pipe one end, but the spraying hole that the water that can supply water to spray of equal array arrangement on every third water pipe periphery wall, second holding intracavity that is located the third water pipe below is provided with first screen cloth, first screen cloth periphery wall and second holding intracavity perisporium fixed connection.

As a preference: the radial width from the left side inner wall to the right side inner wall of the second accommodating cavity is smaller than the radial width from the left side inner wall to the right side inner wall of the first accommodating cavity.

As a preference: first intake pipe intercommunication first holding chamber lower extreme inside wall is provided with the aeration pipe in the first holding pond, is provided with a plurality of aeration heads on the aeration pipe, and first holding pond one end intercommunication aeration fan is kept away from to the aeration pipe.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 shows the present invention is shown in cross-sectional side view.

Description of reference numerals:

1-a tower body; 2-a first circulation pump; 3-a first holding tank; 4-a first water pipe; 6-a second water pipe; 7-a first inlet pipe; 8-a first exhaust pipe; 9-a first accommodating cavity; 10-a first scaffold; 11-a second support; 12-a first electric machine; 13-a first packing frame; 14-a second packing frame; 15-a third packing frame; 16-a first shaft; 17-a first groove; 18-a second shaft; 19-a first arc-like recess; 20-second an arc-shaped groove; 21-a second accommodating cavity; 22-a first water inlet pipe; 23-a third water pipe; 24-spray holes; 25-a first screen; 26-an aerator pipe; 27-aeration head.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Example 1: referring to fig. 1 to 2, in the present embodiment, the biotrickling filter comprises a hollow tower body 1 and a circumscribed first circulation pump 2. The bottom of the inner cavity of the tower body 1 is provided with a first containing tank 3 which can contain liquid, the first containing tank 3 can contain circulating liquid, and the circulating liquid comprises water and nutrient solution. A first water pipe 4 is arranged on the side wall of the lower end of the tower body 1, one end of the first water pipe 4 penetrates through the side wall of the lower end of the tower body 1 and then extends into the first accommodating pool 3, and one end, far away from the first accommodating pool 3, of the first water pipe 4 is connected with a first circulating pump 2 arranged outside. Be provided with second water pipe 6 on first circulating

pump

2, 2 one end intercommunication tower body 1 inner chamber top of first circulating pump are kept away from to this second water pipe 6. Namely, the circulating liquid in the first accommodating pool 3 can enter the top of the inner cavity of the tower body 1 from the first water pipe 4 through the first circulating pump 2 and then enter the first accommodating pool 3 through the second water pipe 6, and the circulating liquid entering the top of the inner cavity of the tower body 1 can enter the first accommodating pool 3 after penetrating through the packing frame structures, so that the circulation of the circulating liquid is completed.

Be provided with a second holding chamber 21 at the top of tower body 1 inner chamber, be provided with first inlet tube 22 in second holding chamber 21, this first inlet tube 22 upper end passes 1 top up end back fixed connection of tower body and communicates second water pipe 6 and keep away from first circulating pump 2 one end, and the circulation liquid in the second water pipe 6 can get into in first inlet tube 22 under the effect of first circulating pump 2 promptly. Six third water pipes 23 are circumferentially arranged on the peripheral wall of the lower end of the first water inlet pipe 22 in the second accommodating cavity 21 at intervals, and the third water pipes 23 are communicated with the first water inlet pipe 22. The six third water pipes 23 are fixedly connected to the first water pipe 4 by welding. Ten spray holes 24 are spaced apart from each other on the outer circumferential wall of the third water tube 23. A first screen 25 is provided below the third water pipe 23, the outer peripheral wall of the first screen 25 is fixedly connected with the inner peripheral wall of the second accommodating cavity 21 through bolts. In this embodiment, the main function of the first screen 25 is to distribute the water spread on the upper end surface of the first screen 25 to each corner of the upper end surface of the first screen 25, so as to achieve the effect of distributing the water reasonably and equally.

A first accommodating cavity 9 is further arranged in the inner cavity of the tower body 1 between the second accommodating cavity 21 and the first accommodating pool 3. The upper end of the first accommodating cavity 9 is communicated with the lower end of the second accommodating cavity 21, and the lower end of the first accommodating cavity 9 is communicated with the upper end of the first accommodating pool 3, so that a circulating path of circulating liquid in the tower is met. The first support 10 and the second support 11 are connected in the first accommodating cavity 9 in a rotating mode, and the first support 10 and the second support 11 are fixedly connected through a filler frame structure. A first rotating shaft 16 is arranged on the center of the end face of the first support 10 far away from the second space, and a first groove 17 for inserting the first rotating shaft 16 is arranged on the inner side wall of the first accommodating cavity 9 near the first support 10. A second rotating shaft 18 is arranged in the center of the end face of the second bracket 11 on the side far away from the first bracket 10, and one end of the second rotating shaft 18 far away from the second end penetrates through the side wall of the tower body 1 and then is fixedly connected with a power output end of the first motor 12. The second shaft 18 and the first shaft 16 are located on the same central axis. Therefore, when the first motor 12 starts to work, the second rotating shaft 18 is driven to rotate, and the first bracket 10 and the second bracket 11 are driven to rotate circumferentially around the second rotating shaft 18.

A filler frame structure is arranged between the first support 10 and the second support, and the filler frame structure is formed by combining a first filler frame 13, a second filler frame 14 and a third filler frame 15. One end of the first packing frame 13 is fixedly connected with the inner side wall of the upper section of the first support 10, and one end of the first packing frame 13, far away from the first support 10, is fixedly connected with the inner side wall of the upper section of the second support 11. One end of the second packing frame 14 is fixedly connected with the inner side wall of the middle section of the first support 10, and one end of the second packing frame 14, far away from the first support 10, is fixedly connected with the inner side wall of the middle section of the second support 11. One end of the third padding frame 15 is fixedly connected with the inner side wall of the lower section of the first bracket 10, and one end of the third padding frame 15, far away from the first bracket 10, is fixedly connected with the inner side wall of the lower section of the second bracket 11.

The first accommodating cavity 9 is of a cylindrical structure, and the first support 10 and the second support 11 which are rotatably connected in the first accommodating cavity 9 are both of a disc-shaped structure. The radial width from the leftmost end to the rightmost end of the first accommodating cavity 9 is 4 meters, the radial width from the leftmost end to the rightmost end of the second accommodating cavity 21 is 3 meters, the radial width from the left end surface to the right end surface of the first packing frame 13 is 3 meters, the radial width from the left end surface to the right end surface of the second packing frame 14 is 3.6 meters, and the radial width from the left end surface to the right end surface of the third packing frame 15 is 3 meters.

A large amount of filler is filled in the first, second, and third filler frames 13, 14, and 15. The filling materials are combined filling materials of an upper layer and a lower layer, wherein the upper layer is semi-soft plastic filling materials with uniform particle size, and the lower layer is ceramsite filling materials with uniform particle size. The height ratio of the upper layer filler to the lower layer filler of the combined filler is 2-8: 1-4. The semi-soft filler with uniform particle size filled in the upper layer can ensure that the radial concentration of the malodorous gas is the same and the axial concentration change is uniform while keeping lower resistance of the bio-trickling filter; the lower layer of the ceramsite filler has small void ratio, the ceramsite can play a role in gas distribution, and the adsorption property of the ceramsite filler is utilized to improve the impact resistance.

An aeration pipe 26 is arranged in the first holding tank 3, ten aeration heads 27 are arranged on the outer peripheral wall of the aeration pipe 26 at intervals, ten aeration through holes are arranged on the outer peripheral wall of the aeration pipe 26, and each aeration through hole is communicated with one aeration head 27. An aeration fan is arranged on the outer side of the tower body 1, and one end of the aeration pipe 26, which is far away from the first accommodating tank 3, penetrates through the side wall of the lower end of the tower bottom and then is connected with the aeration fan. The aeration fan can provide aeration to the first accommodating tank 3 through the aeration pipe 26, so that microorganisms in the circulating liquid in the first accommodating tank 3 are always in an aerobic state, and the discharge amount of dead microorganisms is reduced.

The odor enters the lower end of the first containing cavity 9 from the first air inlet pipe 7, and the air uniformly enters the lower part of the first containing cavity 9, sequentially passes through the lower section filler, the middle section filler and the upper section filler and is finally discharged from the first exhaust pipe 8.

First circulating pump 2 takes the circulating liquid out by first holding pond 3, gets into 1 inner chamber upper end of tower body through first water 4, second water pipe 6, first inlet tube 22 and third water pipe 23, and when the circulating liquid passed through each layer packing layer, on the one hand provided the required moisture of microorganism and nutrient substance, brought the microorganism of death out the bio-trickling filter simultaneously.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims

1. The utility model provides a biological trickling filter, includes tower body (1) and first circulating pump (2), tower body (1) inner chamber bottom is provided with first holding pond (3) of holding circulation liquid, be provided with first water pipe (4) on tower body (1) lateral wall, first water pipe (4) one end intercommunication first holding pond (3), first holding pond (3) one end intercommunication first circulating pump (2) are kept away from in first water pipe (4), first circulating pump (2) are through second water pipe (6) intercommunication tower body (1) inner chamber top, be provided with first intake pipe (7) on tower body (1) lower extreme lateral wall, tower body (1) top is provided with first blast pipe (8), its characterized in that: a first accommodating cavity (9) is further arranged in the inner cavity of the tower body (1), a first support (10) and a second support (11) are rotationally connected in the first accommodating cavity (9), packing frame structures are arranged between the first support (10) and the second support (11) at intervals along the height direction of the tower body (1), and a first motor (12) for driving the first support (10), the second support (11) and the packing frame structures to rotate in the circumferential direction in the first accommodating cavity (9) is arranged on the tower body (1); the packing frame structure comprises a first packing frame (13), a second packing frame (14) and a third packing frame (15) which are sequentially arranged between a first support (10) and a second support (11) from top to bottom, wherein the first packing frame (13), the second packing frame (14) and the third packing frame (15) are filled with packing, one side of the first packing frame (13) is fixedly connected with the side wall at the upper end of the first support (10), one side, far away from the first support (10), of the first packing frame (13) is fixedly connected with the side wall at the upper end of the second support (11), one side of the second packing frame (14) is fixedly connected with the side wall at the middle section of the first support (10), one side, far away from the first support (10), of the second packing frame (14) is fixedly connected with the side wall at the middle section of the second support (11), one side of the third packing frame (15) is fixedly connected with the side wall at the lower end of the first support (10), and one side, far away from the first support (10), of the third packing frame (15) is fixedly connected with the side wall at the lower end of the second support (11); a first rotating shaft (16) is arranged in the center of the end face of one side, away from the second support (11), of the first support (10), a first groove (17) which can be used for the first rotating shaft (16) to be embedded and can circumferentially rotate in the first groove is formed in the inner side wall of the first accommodating cavity (9), a second rotating shaft (18) is arranged in the center of the end face of one side, away from the first support (10), of the second support (11), and one end, away from the second support (11), of the second rotating shaft (18) penetrates through the side wall of the tower body (1) and then is fixedly connected with the power output end of the first motor (12); the first support (10) and the second support (11) are disc-shaped structures with the same size and shape, the radial width from the left end face to the right end face of the first packing frame (13) is smaller than the radial width from the left end face to the right end face of the second packing frame (14), the radial width from the left end face to the right end face of the third packing frame (15) is smaller than the radial width from the left end face to the right end face of the second packing frame (14), the left end face of the first packing frame (13), the left end face of the second packing frame (14) and the left end face of the third packing frame (15) are flush with the outer peripheral walls of the first support (10) and the second support (11), and the right end face of the first packing frame (13), the right end face of the second packing frame (14) and the right end face of the third packing frame (15) are flush with the outer peripheral walls of the first support (10) and the second support (11); the radial width from the left side end face to the right side end face of the first packing frame (13) is equal to the radial width from the left side inner side wall to the right side inner side wall of the first accommodating cavity (9), and the radial width from the left side end face to the right side end face of the third packing frame (15) is equal to the radial width from the left side inner side wall to the right side inner side wall of the first accommodating cavity (9).

2. The biotrickling filter of claim 1, wherein: the novel packing structure is characterized in that a first arc-shaped groove (19) which can be embedded into and can slide in a first support (10) left side, a second support (11) left side, a first packing frame (13) left side, a second packing frame (14) left side and a third packing frame (15) left side is formed in the inner side wall of the first containing cavity (9) left side, a second arc-shaped groove (20) which can be embedded into and can slide in a first support (10) right side, a second support (11) right side, a first packing frame (13) right side, a second packing frame (14) right side and a third packing frame (15) right side is formed in the inner side wall of the first containing cavity (9) right side, first gaps are reserved between the outer peripheral wall of the first support (10) and the outer peripheral wall of the second support (11) and the first arc-shaped groove (19), and second gaps are reserved between the outer peripheral wall of the first support (10) and the outer peripheral wall of the second support (11) and the second arc-shaped groove (20).

3. A biotrickling filter according to claim 2, characterized in that: the width of the first gap and the second gap is 2 mm.

4. The biotrickling filter of claim 1, wherein: tower body (1) top is provided with second holding chamber (21), second holding chamber (21) lower extreme and first holding chamber (9) upper end intercommunication, second holding chamber (21) top is provided with first inlet tube (22), first inlet tube (22) upper end is passed tower body (1) top and is kept away from first circulating pump (2) one end fixed connection with second water pipe (6), still laid a plurality of third water pipe (23), every in second holding chamber (21) third water pipe (23) one end all keeps away from second water pipe (6) one end intercommunication, every with first inlet tube (22) all the array has on third water pipe (23) periphery wall and has arranged the hole (24) that sprays that can supply water and spray, is located be provided with first screen cloth (25) in second holding chamber (21) of third water pipe (23) below, first screen cloth (25) periphery wall and second holding chamber (21) internal perisporium fixed connection.

5. The biotrickling filter of claim 4, wherein: the radial width from the left side inner wall to the right side inner wall of the second accommodating cavity (21) is smaller than the radial width from the left side inner wall to the right side inner wall of the first accommodating cavity (9).

6. The biotrickling filter of claim 1, wherein: the first air inlet pipe (7) is communicated with the inner side wall of the lower end of the first accommodating cavity (9), an aeration pipe (26) is arranged in the first accommodating tank (3), a plurality of aeration heads (27) are arranged on the aeration pipe (26), and one end, far away from the first accommodating tank (3), of the aeration pipe (26) is communicated with an aeration fan.