CN218371950U - Oblique staggered corrugated plate three-dimensional biological rotating disc sewage treatment device - Google Patents

Abstract

The utility model discloses a three-dimensional biological turntable sewage treatment device with obliquely interlaced corrugated plates, which comprises an oxidation contact tank, a central rotating shaft is rotatably connected in the oxidation contact tank, and several biological disks are fixed on the central rotating shaft. There are several corrugated protrusions on the disc surface, and the corrugated protrusions are arranged at equal intervals in the horizontal direction. The corrugated protrusions on two adjacent bio-discs are staggered at 45 degrees to form oblique interlaced channels; Assemblies, the drive assembly is matched with one end of the central rotating shaft. The utility model uses porous corrugated biological discs to form a three-dimensional biological turntable device with obliquely interlaced channels, and adopts the native high-efficiency denitrification agent screened from the local garbage leachate and landfill piles to inoculate the hanging film, thereby achieving high efficiency and high efficiency. The purpose of converting ammonia nitrogen in sewage with low energy consumption. It has the characteristics of high ammonia nitrogen conversion efficiency, low equipment cost, low energy consumption, not easy to block, stable operation and long service life.

Description

A three-dimensional biological turntable sewage treatment device with obliquely interlaced corrugated plates

technical field

The utility model relates to the technical field of environmental pollution control, in particular to a three-dimensional biological turntable sewage treatment device with obliquely interlaced corrugated plates.

Background technique

The leachate produced by the sanitary landfill of aged domestic waste (or closed landfill), although the concentration of organic matter is not high, most of the substances are refractory to biodegradation, containing a large amount of humic acid, fulvic acid and other refractory biodegradable low BOD ₅ /COD, and poor biodegradability; at the same time, this type of leachate has high ammonia nitrogen concentration, high salinity, and high content of toxic substances such as heavy metal ions. After long-term accumulation, heavy metal ions are rich in old leachate. collection, which has a great impact on the environment. Generally, the denitrification process of leachate needs to adjust the pH to be greater than 10 to carry out physical and chemical stripping and denitrification under alkaline conditions, and then carry out biological nitrification. The stripping and denitrification process requires the addition of alkaline chemicals and steam, and the activated sludge nitrification process requires a large amount of oxygen and aeration, which will consume a lot of electricity and increase the carbon emissions of the sewage process. The biological turntable has the characteristics of low energy consumption, strong adaptability to pollution load, long age of biofilm and biosludge attached to the disk, and good nitrification effect. Therefore, the use of biological turntable technology to treat sewage similar to high ammonia nitrogen leachate has high efficiency and low energy consumption. , less carbon emissions, and has a good development prospect.

At present, there are many forms of biological turntables on the market, and there are also successful application examples. However, there are still some problems in the current application process of biological turntables. For example, some biological turntables have small specific surface area and low organic load; some have insufficient porosity and are prone to blockage after long-term operation; ; Some turntables have too complicated structures, special materials, and high cost; some turntables are attached to non-efficient microorganisms, and the denitrification efficiency is not high.

Utility model content

The purpose of the utility model is to provide a three-dimensional biological turntable sewage treatment device with obliquely interlaced corrugated plates to solve the above-mentioned problems in the prior art.

In order to achieve the above purpose, the utility model provides the following scheme: the utility model provides a three-dimensional biological turntable sewage treatment device with obliquely staggered corrugated plates, including an oxidation contact tank, and a central shaft is rotatably connected in the oxidation contact tank, and the center The fixed sleeve on the rotating shaft is provided with several bio-discs, and several corrugated protrusions are arranged on the disc surfaces on both sides of the bio-discs. The corrugated protrusions on the sheet are staggered at 45° to form an oblique staggered channel; a drive assembly is provided outside the oxidation contact groove, and the drive assembly is in transmission cooperation with one end of the central shaft; the bio-disc The specific surface area is not less than 250m ² /m ³ .

Preferably, the height of the corrugated protrusions is 1cm-3cm, and several small holes are opened on the slope and bottom of the corrugated protrusions, and the diameter of the small holes is 5mm-10mm.

Preferably, the diameter of the bio-disc is 0.3m-2.5m, and every 20-40 pieces of the bio-disc constitute a set of three-dimensional turntable assembly, the overall thickness of the three-dimensional turntable assembly is 30cm-60cm, the three-dimensional turntable assembly The void ratio of the turntable assembly is not less than 90%.

Preferably, when the diameter of the bio-disc is larger than 1 m, several fixing bolts are arranged at equal intervals along the circumference of the central rotating shaft, and several of the bio-discs are fixedly matched by the fixing bolts.

Preferably, the top of the oxidation contact tank is detachably connected with a protective cover, and the top of the protective cover is fixedly connected with several ventilation pipes, and the end of the ventilation pipe is connected with an air purification device; the protective cover is provided with An observation hole, a transparent movable hole cover is installed in the observation hole.

Preferably, one end of the oxidation contact tank is fixedly connected with a water inlet pipe, and a flow control device is installed on the water inlet pipe; the other end of the oxidation contact tank is fixedly connected with a water outlet pipe, and the bottom end of the oxidation contact tank is fixedly connected with a discharge pipe. An empty pipe, a gate valve is installed on the empty pipe.

Preferably, the drive assembly includes a drive motor and a reducer fixedly installed on the outer wall of the oxidation contact tank, the drive motor is in transmission cooperation with one end of the central rotating shaft through the reducer, and the other end of the central rotating shaft A support bearing is installed at one end, and the support bearing is fixedly installed on the outer wall of the oxidation contact tank.

Preferably, a driven wheel is fixedly installed at one end of the central rotating shaft close to the driving motor, and the driven wheel is connected to the speed reducer through a belt.

Preferably, an anti-short-flow baffle is installed in the oxidation contact tank, and water holes are opened on the upper and lower parts of the anti-short-flow baffle.

Compared with the prior art, the utility model discloses the following technical effects:

1. The sewage treatment device of the three-dimensional biological turntable with obliquely staggered corrugated plates of the utility model adopts a high specific area, porous corrugated biological disk, and adopts an obliquely staggered channel design. The channel runs through the radial direction of the disc body, which is conducive to the interlaced flow of gas and liquid, Biofilm growth and biofilm shedding, avoiding clogging.

2. The three-dimensional turntable assembly of the utility model has flexible composition and high void ratio, and is suitable for sewage treatment of different scales and concentrations.

3. The utility model is suitable for the treatment of household garbage leachate containing high ammonia nitrogen pollutants, and the mixed leachate of household garbage and kitchen garbage. The leachate is treated by using the three-dimensional biological turntable sewage treatment device with obliquely interlaced corrugated plates of the utility model. The indigenous high-efficiency denitrification bacteria agent screened, enriched, and cultivated from the leachate to be treated and the landfill pile are used to inoculate the film formation, which has a short start-up time and a fast film formation rate.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention. For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is the schematic diagram of the main view structure of the three-dimensional biological turntable sewage treatment device of the utility model with staggered corrugated plates;

Fig. 2 is a left-view cross-sectional schematic diagram of a three-dimensional biological turntable sewage treatment device with obliquely interlaced corrugated plates of the present invention;

Among them, the oxidation contact tank-1, the central shaft-2, the biological disk-3, the small hole-4, the fixing bolt-5, the protective cover-6, the air pipe-7, the observation hole-8, the water inlet pipe-9, Outlet pipe-10, vent pipe-11, gate valve-12, drive motor-13, reducer-14, support bearing-15, driven wheel-16, support plate-17.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In order to make the above purpose, features and advantages of the utility model more obvious and understandable, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The utility model provides a three-dimensional biological turntable sewage treatment device with obliquely staggered corrugated plates, which includes an oxidation contact tank 1, and support plates 17 are fixedly installed at the bottom of both ends of the oxidation contact tank 1. The oxidation contact tank 1 is made of stainless steel or glass steel, and the oxidation contact tank The groove 1 is connected with a central shaft 2 for rotation. The central shaft 2 is made of stainless steel. The central shaft 2 is fixed with several bio-discs 3. The bio-disc 3 is made of stainless steel or PVC. The disk surfaces on both sides of the bio-disc 3 A number of corrugated protrusions are arranged on each of them, and several corrugated protrusions are arranged at equal intervals along the horizontal direction. The corrugated protrusions on two adjacent bio-discs 3 are staggered at 45° to form oblique interlaced channels; There is a driving component, which is driven and matched with one end of the central rotating shaft 2; the height of the corrugated protrusion is 1 cm to 3 cm, and several small holes 4 are opened on the slope and bottom of the corrugated protrusion, and the diameter of the small hole 4 is 5 mm to 10 mm , the specific surface area of the bio-disc 3 is not less than 250m ² /m ³ .

Further, the diameter of the bio-disc 3 is 0.3m-2.5m, and every 20-40 bio-discs 3 constitute a set of three-dimensional turntable assembly, the overall thickness of the three-dimensional turntable assembly is 30cm-60cm, and the void ratio of the three-dimensional turntable assembly is not Less than 90%; when the diameter of the bio-disc 3 is greater than 1m, several fixing bolts 5 are arranged at equal intervals along the circumference of the central rotating shaft 2, and several bio-discs 3 are fixedly matched by the fixing bolts 5.

Further, in order to prevent odor from overflowing, a protective cover 6 is detachably connected to the top of the oxidation contact tank 1. The protective cover 6 is made of glass fiber reinforced plastic. It is connected with an air purification device; the protective cover 6 is provided with an observation hole 8, and a transparent movable hole cover is installed in the observation hole 8.

Further, in order to facilitate the circulation of sewage, one end of the oxidation contact tank 1 is fixedly connected with a water inlet pipe 9, and a flow control device is installed on the water inlet pipe 9; the other end of the oxidation contact tank 1 is fixedly connected with an outlet pipe 10, and the bottom of the oxidation contact tank 1 The end is fixedly connected with a vent pipe 11, and a gate valve 12 is installed on the vent pipe 11.

Further, the drive assembly includes a drive motor 13 and a reducer 14 fixedly installed on the outer wall of the oxidation contact tank 1, the drive motor 13 is in transmission cooperation with one end of the central rotating shaft 2 through the reducer 14, and the other end of the central rotating shaft 2 is equipped with a support bearing 15. The support bearing 15 is fixedly installed on the outer wall of the oxidation contact tank 1 . The drive motor 13 and the reducer 14 drive the three-dimensional turntable assembly to rotate slowly through the central shaft 2, the speed of the reducer 14 is adjustable, and the speed control range is 2-4rpm.

Further, the driving method can also be that a driven wheel 16 is fixedly installed at one end of the central rotating shaft 2 close to the driving motor 13, and the driven wheel 16 is connected to the speed reducer 14 through a belt.

Further, when the length of the oxidation contact tank 1 exceeds 1m, an anti-short flow baffle is installed in the oxidation contact tank 1, and the anti-short flow baffle is arranged every 1m or between the three-dimensional turntable components, and the anti-short flow baffle Both the upper and lower parts of the board are provided with water holes, so that the water flow between different components is deflected up and down, increasing the actual contact time.

A nitrogen removal method using a three-dimensional biological turntable sewage treatment device with staggered corrugated plates, specifically comprising the following steps:

S1. The selection of high-efficiency denitrification bacteria agent is to use the indigenous high-efficiency denitrification bacteria agent screened, enriched and cultivated from the treated landfill leachate and landfill;

S2. Inoculate the hanging film with high-efficiency denitrification bacteria agent, adopt the method of intermittently or continuously injecting high-efficiency denitrification bacteria agent with the leachate, until the biofilm on the biological disk 3 is visible to the naked eye, and the treatment effect is stable, then stop the bacteria injection. Among them, the maximum water level of the leachate must not submerge the central rotating shaft 2, and the maximum submerged water level of the bio-disc 3 is 210 cm lower than the central rotating shaft.

Utilize the three-dimensional biological turntable sewage treatment device with obliquely interlaced corrugated plates of the utility model to treat the leachate of the old domestic garbage landfill. When the COD of the leachate is 2000-3000 mg/L and the concentration of ammonia nitrogen is 500-1000 mg/L, it is in the oxidation contact tank 1 The contact time is not less than 6 hours, and the hydraulic load on the surface of the biological disk 3 is not greater than 0.08m ³ /(m ³ .d), the nitrification rate of ammonia nitrogen reaches more than 80% to 95%, and the COD removal rate is 30% to 40% %.

The utility model provides a three-dimensional biological turntable sewage treatment device with obliquely staggered corrugated plates. The porous corrugated biological discs 3 are combined to form a three-dimensional biological turntable device with oblique staggered channels. The three-dimensional biological turntable device is initially started. Indigenous high-efficiency denitrification agents are screened out from landfill leachate and landfill to inoculate the film, so as to achieve the purpose of converting ammonia nitrogen in sewage with high efficiency and low energy consumption. It is suitable for the treatment of old leachate with low organic matter concentration, high ammonia nitrogen concentration, and difficult biodegradation. It has the characteristics of high ammonia nitrogen conversion efficiency, low equipment cost, low energy consumption, not easy to block, stable operation, and long service life.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model, rather than Any indication or implication that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should not be construed as limiting the invention.

The above-mentioned embodiment is only to describe the preferred mode of the present utility model, not to limit the scope of the present utility model. The various deformations and improvements mentioned above should all fall within the scope of protection determined by the claims of the present utility model.

Claims (9)

1. The utility model provides a three-dimensional biological rotating disc sewage treatment plant of crisscross buckled plate of slope, includes oxidation contact tank (1), its characterized in that, oxidation contact tank (1) internal rotation is connected with central pivot (2), fixed cover is equipped with a plurality of biological disc (3) on central pivot (2)) The surfaces of the two sides of the biological discs (3) are respectively provided with a plurality of corrugated bulges, the corrugated bulges are transversely arranged at equal intervals, and the corrugated bulges on two adjacent biological discs (3) are obliquely staggered at an angle of 45 degrees and form oblique staggered channels; a driving assembly is arranged on the outer side of the oxidation contact groove (1) and is in transmission fit with one end of the central rotating shaft (2); the specific surface area of the bio-disc (3) is not less than 250m ² /m ³ 。

2. The sewage treatment plant with the stereoscopic biological rotating disc with the obliquely staggered corrugated plates according to claim 1, wherein the height of the corrugated protrusions is 1 cm-3 cm, a plurality of small holes (4) are formed in the inclined surfaces and the bottoms of the corrugated protrusions, and the diameters of the small holes (4) are 5 mm-10 mm.

3. The sewage treatment plant according to claim 2, wherein the diameter of the bio-disc (3) is 0.3-2.5 m, every 20-40 bio-discs (3) form a group of stereo-disc assemblies, the overall thickness of the stereo-disc assemblies is 30-60 cm, and the porosity of the stereo-disc assemblies is not less than 90%.

4. The sewage treatment plant according to claim 3, wherein when the diameter of the bio-disc (3) is larger than 1m, a plurality of fixing bolts (5) are arranged along the circumferential direction of the central rotating shaft (2) at equal intervals, and the bio-disc (3) is fixedly matched with the fixing bolts (5).

5. The sewage treatment plant according to claim 1, wherein a protective cover (6) is detachably connected to the top of the oxidation contact tank (1), a plurality of vent pipes (7) are fixedly communicated with the top of the protective cover (6), and the tail ends of the vent pipes (7) are communicated with an air purification device; an observation hole (8) is formed in the protective cover (6), and a transparent movable hole cover is installed in the observation hole (8).

6. The sewage treatment plant with the stereoscopic biological rotating disc comprising the obliquely staggered corrugated plates as claimed in claim 5, wherein one end of the oxidation contact tank (1) is fixedly communicated with a water inlet pipe (9), and a flow control device is installed on the water inlet pipe (9); the other end of the oxidation contact groove (1) is fixedly communicated with a water outlet pipe (10), the bottom end of the oxidation contact groove (1) is fixedly communicated with a vent pipe (11), and the vent pipe (11) is provided with a gate valve (12).

7. The sewage treatment device with the stereoscopic biological rotating disc and the staggered corrugated plates according to claim 1, wherein the driving assembly comprises a driving motor (13) and a speed reducer (14) which are fixedly installed on the outer wall of the oxidation contact tank (1), the driving motor (13) is in transmission fit with one end of the central rotating shaft (2) through the speed reducer (14), a supporting bearing (15) is installed at the other end of the central rotating shaft (2), and the supporting bearing (15) is fixedly installed on the outer wall of the oxidation contact tank (1).

8. The sewage treatment plant according to claim 7, wherein a driven wheel (16) is fixedly mounted at one end of the central rotating shaft (2) close to the driving motor (13), and the driven wheel (16) is in transmission connection with the speed reducer (14) through a belt.

9. The sewage treatment plant with the stereoscopic biological rotating disc and the staggered corrugated plates as claimed in claim 1, wherein a short-flow preventing baffle is installed in the oxidation contact tank (1), and water holes are formed in the upper part and the lower part of the short-flow preventing baffle.

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