CN218403872U

CN218403872U - Hydrolysis-alternating AO sewage advanced treatment unit

Info

Publication number: CN218403872U
Application number: CN202220793917.1U
Authority: CN
Inventors: 陈彦; 吴炳德; 陈琳; 赵艺凡; 黄杨智; 杨志鹏
Original assignee: Jufu Fujian Environmental Protection Technology Co ltd
Current assignee: Jufu Fujian Environmental Protection Technology Co ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2023-01-31
Anticipated expiration: 2032-04-07

Abstract

The utility model discloses a hydrolysis-alternating AO sewage advanced treatment unit, including intake pool, sewage quality treatment line and sewage sludge treatment line, the head end of end connection sewage treatment line of intake pool, the top of sewage sludge treatment line's overall horizontal plane is located to the overall horizontal plane of sewage quality treatment line. The utility model divides the sewage into a water quality part and a sludge part, wherein the sewage part utilizes the SBR treatment mode and utilizes the combination modes of clarification, filtration, aeration and enzymolysis to treat the water quality; the sludge part adopts an anoxic nitrification tank, an anaerobic nitrification tank and an aerobic nitrification tank which are distributed in sequence, and the number of each flora in the nitrification tank is controlled by utilizing a vacuum pump connected with the anaerobic nitrification tank and the aerobic nitrification tank, so that the high-efficiency treatment effect of the AO process is achieved.

Description

Hydrolysis-alternating AO sewage advanced treatment unit

Technical Field

The utility model relates to a sewage treatment technical field especially relates to hydrolysis-alternating AO sewage advanced treatment unit.

Background

Along with the development of economy, the enlargement of urban scale, the growth of population and the improvement of the living standard of people, the urban sewage yield is more and more, the sewage components are more and more complex along with the inflow of industrial wastewater, and the proportion of the industrial wastewater is more and more; meanwhile, in 2006, the environmental protection department modifies the primary A standard and the primary B standard in the discharge Standard of pollutants for municipal wastewater treatment plants (GB 18918-2002), and the discharge Standard of wastewater treatment plants discharging effluent into closed and semi-closed water areas such as key watersheds, lakes, reservoirs and the like is standardized, so that higher requirements are put forward on the treatment process and the removal effect of municipal wastewater.

The combination of the traditional sewage treatment process can also achieve standard discharge, but the phenomena that the operation cost is higher, the occupied area is larger, the effluent exceeds the standard along with the inflow of industrial wastewater, and the standard discharge is difficult to achieve stably often occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a hydrolysis-alternative AO advanced wastewater treatment device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the hydrolysis-alternating AO sewage advanced treatment device comprises a water inlet tank, a sewage quality treatment line and a sewage sludge treatment line, wherein the water inlet tank is connected with the head end of the sewage treatment line, and the overall horizontal plane of the sewage quality treatment line is arranged above the overall horizontal plane of the sewage sludge treatment line; the sewage quality treatment line comprises a sand tank, a primary sedimentation tank, an aeration tank, a secondary sedimentation tank, an enzymolysis tank and a disinfection and sterilization tank which are connected in sequence; the sewage sludge treatment line comprises a sludge return room, a concentration tank, a nitrification tank group and a dehydration room which are connected in sequence; a branch pipeline is arranged between the bottom end of the primary sedimentation tank and the inlet end of the nitrification tank group; a branch pipeline is arranged between the bottom end of the secondary sedimentation tank and the inlet end of the sludge return room, and a return pipeline is arranged between the outlet end of the sludge return room and the inlet end of the aeration tank.

Compare prior art, the beneficial effects of the utility model are that:

in the sewage treatment device, the sewage is divided into a water quality part and a sludge part by a treatment line, wherein the sewage part treats the water quality by using the treatment mode of SBR and the combined mode of clarification, filtration, aeration and enzymolysis. The sludge part adopts an anoxic nitrification tank, an anaerobic nitrification tank and an aerobic nitrification tank which are distributed in sequence, and the number of each flora in the nitrification tank is controlled by utilizing a vacuum pump connected with the anaerobic nitrification tank and the aerobic nitrification tank, so that the high-efficiency treatment of the AO process is realized. Meanwhile, water and flora are recycled by sewage and sludge, so that alternate treatment of two processes is achieved, and the treatment effect of dirt and harmful substances in the whole sewage is improved. In addition, the whole treatment device is placed at a high or low potential, and after the initial end of the treatment device is lifted, the subsequent treatment device can utilize the height difference to perform stepping treatment, so that the whole treatment efficiency is improved.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the hydrolysis-alternative AO advanced wastewater treatment apparatus of the present invention.

In the figure: 1. a water inlet pool; 2. coarse grating; 3. a water collection chamber; 4. a lift pump; 5. lifting the house; 6. fine grids; 7. a sand pool; 8. a primary sedimentation tank; 9. an aeration tank; 10. a secondary sedimentation tank; 11. an enzymolysis tank; 12. a disinfection and sterilization pool; 13. a sludge return room; 14. a concentration tank; 15. a first-stage nitrification tank; 16. a secondary nitrification tank; 17. A primary vacuum pump; 18. a secondary vacuum pump; 19. a third-stage nitrification tank; 20. a dewatering chamber; 21. a tertiary vacuum pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

As shown in fig. 1, the hydrolysis-alternative AO advanced sewage treatment apparatus comprises a water inlet tank 1, a sewage water quality treatment line and a sewage sludge treatment line, wherein the water inlet tank 1 is connected with the head end of the sewage treatment line, and the overall horizontal plane of the sewage water quality treatment line is arranged above the overall horizontal plane of the sewage sludge treatment line;

the sewage quality treatment line comprises a sand tank 7, a primary sedimentation tank 8, an aeration tank 9, a secondary sedimentation tank 10, an enzymolysis tank 11 and a disinfection and sterilization tank 12 which are connected in sequence; the sewage sludge treatment line comprises a sludge return room 13, a concentration tank 14, a nitrification tank group and a dehydration room 20 which are connected in sequence;

a branch pipeline is arranged between the bottom end of the primary sedimentation tank 8 and the inlet end of the nitrification tank group; a branch pipeline is arranged between the bottom end of the secondary sedimentation tank 10 and the inlet end of the sludge return room 13, and a return pipeline is arranged between the outlet end of the sludge return room 13 and the inlet end of the aeration tank 9.

The sludge return room 13 is internally provided with a pump body which is used for extracting part of sludge containing flora at the rear end of the sewage sludge treatment line and inputting the sludge into the aeration tank 9 through a return pipeline.

The secondary sedimentation tank 10 feeds bottom side sludge to a sewage sludge treatment line.

The sand tank 7 is connected to the top end of the primary sedimentation tank 8 through a pipeline.

The water inlet end of the water inlet pool 1 is provided with a coarse grating 2. The coarse screen 2 filters large impurities and requires periodic treatment.

The outlet end of the water inlet tank 1 is connected with a water collecting chamber 3, and the outlet end of the water collecting chamber 3 is connected with a lifting room 5 for lifting sewage into a sand tank 7.

And a fine grid 6 is arranged at the water inlet end of the sand pool 7. The fine screen 6 and the sand basin 7 are used for filtering small particle impurities.

An aeration pump is arranged in the aeration tank 9.

The outer wall of the enzymolysis tank 11 is connected with a feeding hopper.

The nitrification tank group comprises a first-level nitrification tank 15, a second-level nitrification tank 16 and a third-level nitrification tank 19, wherein the first-level nitrification tank 15, the second-level nitrification tank 16 and the third-level nitrification tank 19 are distributed in a gradient manner.

The first-stage nitrification tank 15 is an anaerobic nitrification tank, the second-stage nitrification tank 16 is an anoxic nitrification tank, and the third-stage nitrification tank 19 is an aerobic nitrification tank. The alternative AO sewage treatment impurity.

The outer walls of the primary nitrification tank 15, the secondary nitrification tank 16 and the tertiary nitrification tank 19 are respectively connected with a primary vacuum pump 17, a secondary vacuum pump 18 and a tertiary vacuum pump 21.

The dewatering house 20 and the thickening tank 14 may be provided with return pipes to circulate excess water to the sewage treatment line.

When the hydrolysis-alternative AO sewage advanced treatment device is used, the sewage is input through the water inlet tank 1, filtered by the coarse grating 2, filtered by the large particles through the sand tank 7 and the fine grating 6, and then treated by the precipitation, filtration, enzymolysis and filtration modes;

the settled sludge is input into a sludge return room 13 and concentrated by a concentration tank 14 to improve the concentration of the sludge so as to facilitate subsequent treatment, and then a primary vacuum pump 17, a secondary vacuum pump 18 and a tertiary vacuum pump 21 are regulated and controlled to enable a primary nitrification tank 15, a secondary nitrification tank 16 and a tertiary nitrification tank 19 to form different anaerobic, anoxic and aerobic types of environments, so that the sludge is treated in the nitrification tank, and finally the sludge is transported out after dehydration, thereby achieving the treatment of solid parts in the sewage, simultaneously, the water in dehydration and concentration can be circulated to a water quality treatment part in the sewage, and the recovery rate of the sewage treatment is improved.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", "first", "second", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The hydrolysis-alternating AO sewage advanced treatment device is characterized by comprising a water inlet tank (1), a sewage quality treatment line and a sewage sludge treatment line, wherein the water inlet tank (1) is connected with the head end of the sewage treatment line, and the overall horizontal plane of the sewage quality treatment line is arranged above the overall horizontal plane of the sewage sludge treatment line;

the sewage quality treatment line comprises a sand tank (7), a primary sedimentation tank (8), an aeration tank (9), a secondary sedimentation tank (10), an enzymolysis tank (11) and a disinfection and sterilization tank (12) which are connected in sequence; the sewage sludge treatment line comprises a sludge return room (13), a concentration tank (14), a nitrification tank group and a dehydration room (20) which are connected in sequence;

a branch pipeline is arranged between the bottom end of the primary sedimentation tank (8) and the inlet end of the nitrification tank group; a branch pipeline is arranged between the bottom end of the secondary sedimentation tank (10) and the inlet end of the sludge return room (13), and a return pipeline is arranged between the outlet end of the sludge return room (13) and the inlet end of the aeration tank (9).

2. The hydrolysis-alternating AO sewage treatment apparatus according to claim 1, wherein the water inlet end of the water inlet tank (1) is provided with a coarse grating (2).

3. The advanced hydrolysis-alternating AO sewage treatment apparatus according to claim 1, characterized in that the outlet end of the inlet tank (1) is connected with a collecting chamber (3), and the outlet end of the collecting chamber (3) is connected with a lifting room (5) for lifting the sewage into a sand tank (7).

4. The hydrolysis-alternating AO sewage advanced treatment unit of claim 3, characterized in that the water inlet end of the sand basin (7) is provided with a fine grid (6).

5. The hydrolysis-alternating AO advanced wastewater treatment apparatus according to claim 1, wherein an aeration pump is provided inside the aeration tank (9).

6. The hydrolysis-alternating AO sewage advanced treatment unit of claim 1, characterized in that the outer wall of the enzymolysis tank (11) is connected with a feeding hopper.

7. The hydrolysis-alternating AO sewage treatment apparatus according to any one of claims 1 to 6, wherein the nitrification tank group comprises a primary nitrification tank (15), a secondary nitrification tank (16) and a tertiary nitrification tank (19), and the primary nitrification tank (15), the secondary nitrification tank (16) and the tertiary nitrification tank (19) are distributed in a gradient.

8. The hydrolysis-alternating AO sewage advanced treatment unit according to claim 7, wherein the primary nitrification tank (15) is an anaerobic type nitrification tank, the secondary nitrification tank (16) is an anoxic type nitrification tank, and the tertiary nitrification tank (19) is an aerobic type nitrification tank.

9. The hydrolysis-alternating AO sewage advanced treatment unit of claim 8, wherein the outer walls of the primary nitrification tank (15), the secondary nitrification tank (16) and the tertiary nitrification tank (19) are respectively connected with a primary vacuum pump (17), a secondary vacuum pump (18) and a tertiary vacuum pump (21).