CN215559682U

CN215559682U - Biological barrel wastewater treatment device that changes

Info

Publication number: CN215559682U
Application number: CN202023287116.8U
Authority: CN
Inventors: 林强; 罗安程; 梁志伟; 张研
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-01-18
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a biological rotary barrel wastewater treatment device, which comprises a rotary barrel transversely arranged in a water tank and a central rotating shaft externally connected with an engine; the rotary barrel is of a cylindrical net-shaped shell structure with a hollow cavity, and is sequentially divided into a biochemical region, a phosphorus removal region and a precipitation region which are communicated and are cylindrical through a porous net along the water flow direction; the biochemical area is filled with a plurality of hemispherical shell-shaped biological fillers; the phosphorus removal zone comprises a plurality of phosphorus removal agent partitions and zeolite partitions which are alternately arranged along the circumferential direction of the central rotating shaft; the phosphorus removing agent partitions are filled with slow-release phosphorus removing agents, and the zeolite partitions are filled with zeolite; the settling zone is filled with zeolite. Compared with the traditional biological rotating disc, the biological barreling structure provided by the utility model is simple in structure, low in material cost and convenient to disassemble and replace components.

Description

Biological barrel wastewater treatment device that changes

Technical Field

The utility model relates to a biological rotary barrel wastewater treatment device, and belongs to the field of wastewater treatment.

Background

The biological rotating disk is widely applied to various waste water treatment processes in China, is one of the more green and ecological water pollution treatment methods at the present stage, and mainly carries out metabolism, oxidation and decomposition on organic pollutants through microorganisms in aerobic and anaerobic cycle reciprocating and alternating environments. Compared with other biological treatment processes, the biological rotating disc has the advantages of high solid-liquid separation efficiency, small occupied area, compact structure and the like.

The main structure of the traditional biological rotating disk is generally formed by connecting a series of disks in series, the disks are made of materials such as glass fiber reinforced plastics and polyvinyl fluoride, the whole material consumption is large, the construction cost is high, the specific surface area is small, microorganisms on the disks are easy to fall off, the degradation efficiency of the rotating disk is greatly influenced, and the technology is difficult to popularize and apply on a large scale. Meanwhile, the existing biological rotating disc mainly depends on microbial biochemical phosphorus removal, but an aging biomembrane falling off from the biological rotating disc does not have the phosphorus accumulation function, so that the phosphorus removal efficiency of the whole device is limited, and the total phosphorus of effluent is difficult to reach the standard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides a biological rotary barrel wastewater treatment device.

The utility model adopts the following specific technical scheme:

a biological rotary barrel wastewater treatment device comprises a rotary barrel arranged in a water tank and a central rotating shaft externally connected with an engine; the central rotating shaft coaxially penetrates through the rotating barrel and can drive the rotating barrel to synchronously rotate in the water tank, and the lower part of the rotating barrel is immersed in the water body in the water tank;

the rotary barrel is of a cylindrical net-shaped shell structure with a hollow cavity, and is sequentially divided into a biochemical region, a phosphorus removal region and a precipitation region which are communicated and are cylindrical through a porous net along the water flow direction; the biochemical area is filled with a plurality of hemispherical shell-shaped biological fillers; the phosphorus removal zone comprises a plurality of phosphorus removal agent partitions and zeolite partitions which are alternately arranged along the circumferential direction of the central rotating shaft, and the same cross section of the phosphorus removal agent partitions and the zeolite partitions along the radial direction of the rotating barrel is a sector area with the same circle center; the phosphorus removing agent partition is filled with a phosphorus removing agent, and the zeolite partition is filled with zeolite; the settling zone is filled with zeolite.

Preferably, the rotating barrel and the porous net are both made of stainless steel nets.

Preferably, both ends of the rotary barrel are supported by equal-size rims, hubs are fixed on the central rotating shafts at both end sides of the rotary barrel, and the rims at both ends of the rotary barrel are connected with the hubs through spokes.

Preferably, an equally large rim is fixed to the edge of each porous net, a hub is fixed to the central rotating shaft at the position of the porous net, and the rim is connected with the hub through spokes.

Further, the outer edge of the rim is wrapped with rubber.

Preferably, the inner bottom of the water tank is of a concave arc structure, and the radius of the inner bottom of the water tank is slightly larger than that of the rotary barrel; a gap is arranged between the periphery of the rotary barrel and the inner wall of the water tank.

Preferably, the water inlet of the water tank is higher than the water outlet of the water tank.

Preferably, the biological filler is a hemispherical pecan shell with the radius of 3-5 cm.

Preferably, the engine is supported outside the water tank through a support plate, and a rotating shaft of the engine drives the central rotating shaft and the rotating barrel to rotate synchronously through a gear belt.

Preferably, the side walls of the rotary barrel where the biochemical region, the phosphorus removal region and the precipitation region are located are provided with opening and closing doors for replacing the filler.

Compared with the prior art, the utility model has the following beneficial effects:

1) compared with the traditional biological rotating disc, the biological barreling structure provided by the utility model is simple in structure, low in material cost and convenient to disassemble and replace components.

2) The agricultural waste semi-shell pecan shells adopted by the utility model have large specific surface area, are easy to be attached with microorganisms, can provide carbon sources necessary for the growth of the microorganisms, and can enhance the treatment efficiency of the biological rotating barrel; meanwhile, the filler is ecological and environment-friendly and has low cost.

3) Aiming at the limitation of the traditional biochemical phosphorus removal efficiency, the utility model achieves the purpose of strengthening phosphorus removal by a matching process of adding a phosphorus removal agent in a phosphorus removal area and adding zeolite in a precipitation area.

Drawings

FIG. 1 is a schematic structural view of a biological rotary barrel processing device according to the present invention;

FIG. 2 is a side view of the structure of FIG. 1;

FIG. 3 is a schematic view of the structure of the biological rotary bucket of the present invention;

FIG. 4 is a cross-sectional view of the phosphorus removal zone of FIG. 3;

FIG. 5 is a schematic enlarged view of a portion of a packing, wherein (a) is a schematic structural diagram of a phosphorous removing agent in a phosphorous removing agent partition, (b) is a schematic structural diagram of a biological packing in a biochemical partition, and (c) is a schematic structural diagram of a zeolite in a zeolite partition;

reference numbers in the figures: the device comprises a rim 1, a hub 2, a central rotating shaft 3, spokes 4, rubber 5, a rotating barrel 6, a gear belt 7, an engine 8, a water tank 9, a water inlet 10, a water outlet 11, biological fillers 12, a biochemical region 14, a phosphorus removal region 15, a settling region 16, a phosphorus removal agent 19, a phosphorus removal agent partition 21, a zeolite partition 22, a porous net 23 and an opening and closing door 25.

Detailed Description

The utility model will be further elucidated and described with reference to the drawings and the detailed description. The technical features of the embodiments of the present invention can be combined correspondingly without mutual conflict.

As shown in fig. 1 and 2, the biological rotary barrel wastewater treatment device provided by the utility model comprises a rotary barrel 6, a central rotary shaft 3 and a water tank 9. The water tank 9 is placed on the ground, the notch of the water tank is upward, and the rotary barrel 6 is transversely arranged in the water tank 9. The bottom (i.e. the side close to the rotary barrel 6) in the trough of the water trough 9 is a concave arc structure, the radius of the arc structure is slightly larger than that of the rotary barrel 6, namely, a gap is arranged between the periphery of the rotary barrel 6 and the inner wall of the water trough 9, so that the rotary barrel 6 can freely rotate in the water trough 9, and abrasion or resistance can not be generated due to mutual friction. The front side and the rear side of the water tank 9 are respectively provided with a water inlet 10 and a water outlet 11, the hydraulic retention time of the wastewater in the water tank can be directly controlled by controlling the opening and closing of the water inlet 11 and the water outlet 11, in the embodiment, the position of the water inlet 10 of the water tank 9 can be set to be higher than the position of the water outlet 11, so that the water flow can flow out of the water tank 9 by means of the height difference of the water inlet 11 and the water outlet 11.

The central rotating shaft 3 coaxially penetrates through the rotating barrel 6, the central rotating shaft 3 is externally connected with an engine 8, the rotating barrel 6 can be driven to synchronously rotate in the water tank 9, and meanwhile, in the operation process, the lower part of the rotating barrel 6 needs to be immersed in the water body in the water tank 9, so that the water body introduced into the water tank is treated. In this embodiment, both ends are supported by equidimension rim 1 around the rotary barrel 6, all are fixed with wheel hub 2 on being located the central pivot 3 of rotary barrel 6 both ends side, and rim 1 and wheel hub 2 at rotary barrel 6 both ends all are connected through spoke 4, and the rim outward flange parcel rubber 5 to reduce the friction between the deposit that rotary barrel and basin bottom formed gradually in the operation. The engine 8 is arranged outside the water tank 9 through a support plate frame, and a rotating shaft of the engine 8 drives the central rotating shaft 3 and the rotating barrel 6 to synchronously rotate through a gear belt 7.

As shown in fig. 3, the rotary tub 6 is a cylindrical net-shaped shell structure, the side surface and two ends of the rotary tub 6 are surrounded by a water-permeable and corrosion-resistant stainless steel net, and a hollow chamber is arranged in the rotary tub. The hollow chamber is sequentially divided into a biochemical region 14, a phosphorus removal region 15 and a precipitation region 16 which are communicated and all columnar along the water flow direction, and the biochemical region 14, the phosphorus removal region 15 and the precipitation region 16 are all separated by a circular porous net 23, so that only water flow can flow through different treatment regions, and fillers in each treatment region cannot flow through the porous net 23. The porous nets 23 are made of water-permeable and corrosion-resistant stainless steel net, and in order to enhance the axial strength of the rotary tub 6, a rim 1 with an equal size may be fixed to the edge of each porous net 23, a hub 2 may be fixed to the central rotating shaft 3 at the position of the porous net 23, and the rim 1 and the hub 2 may be connected by a spoke 4. The side walls of the rotating barrel 6 where the biochemical region 14, the phosphorus removal region 15 and the sedimentation region 16 are arranged are provided with doors 25 for opening and closing so as to replace the fillers filled in each functional region.

As shown in FIG. 5(b), the biochemical region 14 is filled with a plurality of biological fillers 13 with hemispherical hollow structures, and the biological fillers 13 can be hemispherical pecan shells with a radius of 3-5 cm. When the rotary barrel 6 operates, the wastewater can enter the rotary barrel 6 through the holes on the stainless steel mesh to contact with the biological filler 13, and the biological filler 13 in the rotary barrel 6 can rotate along with the rotation of the rotary barrel 6. In order to prevent the biological filler 13 from falling off from the stainless steel net, the mesh opening of the stainless steel net should be smaller than the size of the biological filler 13.

As shown in fig. 4, the phosphorus removal zone 15 includes a plurality of phosphorus removal agent partitions 21 and zeolite partitions 22, the phosphorus removal agent partitions 21 and the zeolite partitions 22 are alternately arranged along the circumferential direction of the central rotating shaft 3, that is, the phosphorus removal agent partitions 21 and the zeolite partitions 22 are sector areas with the same circle center along the same radial cross section of the rotating barrel 6, and only one partition is arranged in the phosphorus removal zone 15 along the axial direction of the rotating barrel 6.

As shown in fig. 5(a), the phosphorus removing agent partition 21 is filled with a cylindrical phosphorus removing agent 19, and the phosphorus removing agent 19 can be a material with phosphorus removing effect existing on the market, such as a phosphorus removing agent of SP-1 model or a phosphorus removing agent of CLGX 11 model. In order to ensure that the phosphorus removing agent 19 has better effect and longer service life in the practical application process and the phosphorus precipitates which are not easy to form are loaded on the surface to ensure that the phosphorus removing agent is ineffective, the slow-release phosphorus removing agent can also be adopted.

As shown in fig. 5(c), the zeolite partition 22 is filled with zeolite, so that the ferrophosphorus precipitate formed in the phosphorus removing agent partition 21 and a part of the phosphorus removing agent 19 entering the water are intercepted and adsorbed by the zeolite in the zeolite partition 22, and the adsorption interception effect is enhanced. The settling zone 16 is filled with zeolite for intercepting the precipitate after the phosphorus removing agent 19 is combined with phosphorus, thereby further enhancing the effect of the device in removing pollutants.

The method for treating the wastewater by the device in the practical application process specifically comprises the following steps:

firstly, wastewater enters the biological rotary barrel wastewater treatment device through the water inlet 10 at the front end of the water tank 9, and the wastewater in the water tank 9 can submerge the lower part of the rotary barrel 6 by adjusting the water quantity and the hydraulic retention time of the wastewater entering the biological rotary barrel wastewater treatment device. The wastewater firstly enters the biochemical area 14 through the reticular shell of the rotary barrel 6 for biochemical degradation reaction. Because the biological filler 12 filled in the biochemical region 14 has a large specific surface area, the biological filler is continuously contacted with the wastewater in the rotation process of the rotary barrel 6, the biological filler 12 is easy to adhere to the surface and form a biological film, and the biological filler 12 contains rich organic components, so that an organic carbon source can be provided for the growth of flora in the biological film, and the treatment effect is enhanced. Because hemispherical biological packing 12 can hold and connect waste water, the biomembrane is at the rotation in-process along with changeing bucket 6, and the waste water that holds and connects in biological packing 12 can constantly switch under good oxygen and anaerobic environment (rotate to be the good oxygen state when upper portion and air contact, and it is the anaerobic state to rotate to be bottom submergence in the water), thereby do benefit to going on of waste water biochemical reaction, reach denitrogenation and preliminary dephosphorization effect. Meanwhile, the hemispherical biological filler 12 can contain wastewater, so that the reaction time of the wastewater in the biochemical region 14 can be prolonged, and the wastewater can fully react in the biochemical region 14.

The wastewater treated by the biochemical zone 14 enters the phosphorus removal zone 15, and the wastewater passes through the phosphorus removal function of the phosphorus removal agent 19 filled in the phosphorus removal agent partition 21, such as a material formed by mixing stearic acid and polymeric ferric sulfate, and the material can gradually release iron ions to be combined with phosphorus in the wastewater in the removal process, so that phosphorus in the water is changed into phosphide precipitate. During the continuous rotation of the rotary barrel 6, the phosphide precipitates and the dephosphorizing agent 19 entering the water is partially intercepted and adsorbed by the zeolite in the zeolite partition 22. The substances which are not acted on by the zeolite partition 22 enter the subsequent precipitation zone 16 along with the water flow, and further intercept the adsorption phosphide precipitation and the dephosphorization agent 19 entering the water through the adsorption interception function of the zeolite filled in the precipitation zone 16.

The waste water flows out of the biological rotary barrel waste water treatment device from a water outlet 11 at the rear end of the water tank 9 and enters a secondary sedimentation tank, and the waste water separates impurities in the water from the water body in the secondary sedimentation tank through sedimentation, so that the water body is clarified to purify the water body. And the wastewater treated by the secondary sedimentation tank enters a filtering and disinfecting tank, the pathogenic microorganisms are sterilized and disinfected by ultraviolet rays with proper wavelength in the filtering and disinfecting tank, and the wastewater reaching the standard is discharged or recycled to finish the treatment process of the wastewater.

The above-described embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the utility model. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, the technical scheme obtained by adopting the mode of equivalent replacement or equivalent transformation is within the protection scope of the utility model.

Claims

1. A biological rotary barrel wastewater treatment device is characterized by comprising a rotary barrel (6) transversely arranged in a water tank (9) and a central rotating shaft (3) externally connected with an engine (8); the central rotating shaft (3) coaxially penetrates through the rotating barrel (6) and can drive the rotating barrel (6) to synchronously rotate in the water tank (9), and the lower part of the rotating barrel (6) is immersed in the water body in the water tank (9);

the rotary barrel (6) is of a cylindrical net-shaped shell structure with a hollow cavity, and is sequentially divided into a biochemical region (14), a phosphorus removal region (15) and a precipitation region (16) which are communicated and are cylindrical through a porous net (23) along the water flow direction; the biochemical region (14) is filled with a plurality of hemispherical shell-shaped biological fillers (12); the phosphorus removal zone (15) comprises a plurality of phosphorus removal agent partitions (21) and zeolite partitions (22) which are alternately arranged along the circumferential direction of the central rotating shaft (3), and the same cross section of the phosphorus removal agent partitions (21) and the zeolite partitions (22) along the radial direction of the rotating barrel (6) is a sector area with the same circle center; the phosphorus removing agent partition (21) is filled with a phosphorus removing agent (19), and the zeolite partition (22) is filled with zeolite; the settling zone (16) is filled with zeolite.

2. The biological rotary barrel waste water treatment device as claimed in claim 1, wherein the rotary barrel (6) and the porous net (23) are made of stainless steel net.

3. The biological rotating barrel wastewater treatment device as claimed in claim 1, wherein both ends of the rotating barrel (6) are supported by equal-sized rims (1), hubs (2) are fixed on the central rotating shaft (3) at both end sides of the rotating barrel (6), and the rims (1) at both ends of the rotating barrel (6) are connected with the hubs (2) through spokes (4).

4. The biological rotary barrel wastewater treatment device as claimed in claim 1, wherein a rim (1) of equal size is fixed on the edge of each porous net (23), a hub (2) is fixed on the central rotating shaft (3) at the position of the porous net (23), and the rim (1) is connected with the hub (2) through spokes (4).

5. A biological rotary barrel wastewater treatment device according to claim 3 or 4, characterized in that the outer edge of the rim (1) is wrapped with rubber (5).

6. The biological rotary barrel wastewater treatment device as claimed in claim 1, wherein the inner bottom of the water tank (9) is a concave arc structure with a radius slightly larger than that of the rotary barrel (6); a gap is arranged between the periphery of the rotary barrel (6) and the inner wall of the water tank (9).

7. The biological rotary barrel wastewater treatment device as recited in claim 1, wherein the water inlet of the water tank (9) is located higher than the water outlet (11) thereof.

8. The biological rotary barrel wastewater treatment device according to claim 1, wherein the biological filler (12) is a hemispherical pecan shell with a radius of 3-5 cm.

9. The biological rotary barrel wastewater treatment device according to claim 1, wherein the engine (8) is supported outside the water tank (9) through a support plate, and a rotating shaft of the engine (8) drives the central rotating shaft (3) and the rotary barrel (6) to synchronously rotate through a gear belt (7).

10. The biological rotating barrel wastewater treatment device according to the claim 1, characterized in that the side wall of the rotating barrel (6) where the biochemical area (14), the phosphorus removal area (15) and the sedimentation area (16) are arranged is provided with an opening and closing door for replacing the filler.