CN107265780B

CN107265780B - Clean system suitable for false mountain water

Info

Publication number: CN107265780B
Application number: CN201710662179.0A
Authority: CN
Inventors: 张俊; 巢路; 周璟; 王欢
Original assignee: Shanghai Investigation Design and Research Institute Co Ltd SIDRI
Current assignee: Shanghai Investigation Design and Research Institute Co Ltd SIDRI
Priority date: 2017-08-04
Filing date: 2017-08-04
Publication date: 2023-04-07
Anticipated expiration: 2037-08-04
Also published as: CN107265780A

Abstract

The invention provides a purification system suitable for a water body of a rockery, which comprises a water inlet unit, a water treatment unit, a precipitation unit and an aeration unit which are sequentially arranged along the flow direction of the water body; the water inlet unit comprises a water inlet pipe, and a water pump is arranged on the water inlet pipe; the water treatment unit comprises a treatment cavity, and a plurality of biological rope fillers are suspended in the treatment cavity; the sedimentation unit comprises a sedimentation tank; the aeration unit comprises at least one aeration rotary disc; the purification system further comprises a first conduit, a return conduit and a second conduit. The rotation of the aeration rotary disc can not only improve the landscape effect of high mountain and running water, but also enhance the dissolved oxygen content of the effluent of the sedimentation tank, and further improve the landscape effect of the water body; biological rope filler is hung in the treatment cavity to purify the water body, the water body flows into the sedimentation tank to be further precipitated after being purified, and the sludge in the sedimentation tank flows back to the treatment cavity or is discharged out of the treatment system, and can be realized through potential energy without extra power.

Description

Clean system suitable for false mountain water

Technical Field

The invention relates to the technical field of ecological environment engineering, in particular to a purification system suitable for an artificial hillock water body in a city park.

Background

The construction of landscape water bodies is an important component part for improving and upgrading urban parks, and various landscape water bodies play an active role in improving the landscape and regulating microclimate in the area. Many urban parks are provided with rockeries, some rockeries are also provided with 'high mountain running water' type waterfall landscapes, waterfall water is generally taken from landscape water bodies or running water in the parks, but the quality of the landscape water bodies in the current urban parks generally cannot meet the standard of landscape entertainment water, landscape effect display can be influenced by selecting the landscape water bodies as waterfall water sources, the running water is used for wasting high-quality water resources, and the landscape water bodies are supplemented by using reclaimed water, which is a necessary trend.

However, "water making is easy and difficult to preserve", because the bottom value of pollutants of the reclaimed water is high, and the rockery water body is mostly a closed and semi-closed slow flow system, the area of the general water area is small, the water is shallow, the water quantity is small, the water mobility is poor, and the water ecosystem is fragile, so that the self-purification capacity is poor. How to efficiently maintain the water quality of the rockery water body is a difficulty of the current rockery landscape; for polluted rockery water, how to form virtuous cycle and change 'dead water' into 'live water' is a problem which people need to solve urgently.

Disclosure of Invention

The invention aims to provide a purification system suitable for a rockery water body, so as to overcome the defects in the prior art.

In order to achieve the aim, the invention provides a purification system suitable for a water body in a rockery, which comprises a water inlet unit, a water treatment unit, a precipitation unit and an aeration unit which are sequentially arranged along the flow direction of the water body; the water inlet unit comprises a water inlet pipe, and a water pump is arranged on the water inlet pipe; the water treatment unit comprises a treatment cavity positioned on the back surface of the rockery, the water outlet of the water inlet pipe is connected to the position, close to the bottom, of the treatment cavity, a plurality of biological rope fillers are hung in the treatment cavity, a first water outlet is formed in the position, close to the top, of the treatment cavity, and a water outlet is formed in the bottom of the treatment cavity; the sedimentation unit comprises a sedimentation tank positioned at the top of the rockery, a water inlet and a second water outlet are arranged on the sedimentation tank, the water inlet is positioned at the downstream of the first water outlet, and a sludge discharge port is arranged at the bottom of the sedimentation tank; the aeration unit comprises at least one aeration rotary disc, the aeration rotary disc is positioned at the downstream of the second water outlet, and the aeration rotary disc is arranged on the display surface of the rockery; the purification system further comprises a first pipeline, the top end of the first pipeline is communicated with the sludge discharge port, a return pipe is arranged on the first pipeline and communicated with the treatment cavity, and the water discharge port is communicated with the first pipeline through a second pipeline.

Preferably, the treatment cavity is provided with at least one turbulence device, each aeration turntable is sleeved on a rotating shaft, the rotating shaft penetrates through the rockery and extends into the treatment cavity, and the turbulence device is arranged at the other end of the rotating shaft.

Preferably, the spoiler device is established including the cover establish in the epaxial first coupling ring of pivot and a plurality of first blades of fixing on the first coupling ring and along first coupling ring circumference equipartition, every the one end of first blade is fixed on the first coupling ring, and the other end is equipped with the portion of bending of syntropy bending.

Preferably, the aeration rotary disc comprises a second connecting ring sleeved on the rotating shaft and a plurality of second blades fixed on the second connecting ring and uniformly distributed along the circumferential direction of the second connecting ring, one end of each second blade is fixed on the second connecting ring, the other end of each second blade is provided with two cross rods distributed in the same direction, a space is reserved between the two cross rods, and the cross rods on the second blades are arranged in the same direction.

Preferably, be equipped with fixed pipe in the artificial hillock, the one end of fixed pipe stretches into in the treatment cavity, the other end stretches out the artificial hillock, a bearing is respectively inlayed to the position that is close to both ends in the fixed pipe, the pivot passes two bearings in proper order and stretches into in the treatment cavity.

Preferably, a flange is arranged at the top of the treatment cavity, a ventilation manhole is arranged on the flange, an escalator is arranged in the treatment cavity, and the top of the escalator is located below the ventilation manhole.

Preferably, the bottom of processing cavity is the back taper form, the bottom of sedimentation tank is the back taper form.

Preferably, the top of the sedimentation tank is provided with a cover plate, the bottom of the cover plate is provided with a partition plate, and a space is reserved between the partition plate and the bottom of the sedimentation tank.

Preferably, a plurality of aeration rotary tables are arranged along the display surface of the rockery in a staggered manner from top to bottom.

Preferably, the end of the first pipeline is provided with a first shut-off valve, and the return pipe is provided with a second shut-off valve.

As described above, the purification system applicable to the water body in the rockery according to the present invention has the following advantages:

the rotation of the aeration rotary disc can not only improve the landscape effect of high mountain and running water, but also enhance the dissolved oxygen content of the effluent of the sedimentation tank, and further improve the landscape effect of the water body; biological rope filler is hung in the treatment cavity to purify the water body, the water body flows into the sedimentation tank to be further precipitated after being purified, and the sludge in the sedimentation tank flows back to the treatment cavity or is discharged out of the treatment system, and can be realized through potential energy without extra power.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention.

Fig. 2 is a schematic structural view of the water inlet unit.

FIG. 3 is a schematic view of a water treatment unit.

FIG. 4 is a schematic diagram of the structure of the precipitation unit.

FIG. 5 is a schematic view of the structure of the aeration unit.

FIG. 6 is a schematic cross-sectional view of a bearing

FIG. 7 is a schematic view of a rockery aeration plan layout

FIG. 8 is a schematic view of the structure of an aeration rotary disk

FIG. 9 is a schematic view of a spoiler

FIG. 10 is a schematic view of the connection between the sedimentation tank and the first pipe

Description of the element reference

1. Water inlet unit

11. Water inlet pipe

12. Water pump

2. Water treatment unit

21. Processing chamber

22. Biological rope filler

23. The first water outlet

24. Water outlet

25. Turbulent flow device

251. First connecting ring

252. First blade

253. Bent part

26. Flange

261. Ventilating manhole

262. Staircase

3. Precipitation unit

31. Sedimentation tank

32. Water inlet

33. The second water outlet

34. Sludge discharge port

35. Cover plate

36. Partition board

4. Aeration unit

41. Aeration rotary disc

411. Second connecting ring

412. Second blade

413. Cross bar

42. Rotating shaft

5. Rockery

51. Back display surface

52. Display surface

53. Fixed pipe

54. Bearing assembly

541. Ball bearing

61. First pipeline

611. First shut-off valve

62. Return pipe

621. Second shut-off valve

63. Second pipeline

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship may be made without substantial technical changes.

As shown in figure 1, the invention provides a purification system suitable for a water body in a rockery, which comprises a water inlet unit 1, a water treatment unit 2, a precipitation unit 3 and an aeration unit 4 which are sequentially arranged along the flow direction of the water body.

As shown in fig. 1 and 2, the water inlet unit 1 includes a water inlet pipe 11, a water pump 12 is disposed on the water inlet pipe 11, the water inlet unit 1 is located at the front end of the system, and the outside landscape water body to be purified is introduced into the water treatment unit through the water pump 12 and the water inlet pipe 11.

As shown in fig. 1 and 3, the water treatment unit 2 includes a treatment chamber 21. The treatment chamber 21 is constructed on the rockery 5, and may be made of reinforced concrete, and is generally located on the back surface 51 of the rockery 5, and the height thereof may be determined according to the height of the rockery 5, and the top thereof may be slightly higher than the top of the sedimentation unit 3 on the rockery 5. The water outlet of the water inlet pipe 11 is connected to the position, close to the bottom, of the treatment cavity 21, a plurality of biological rope fillers 22 are suspended in the treatment cavity 21, and the volume of the expanded biological rope fillers accounts for more than 50% of the volume of the treatment cavity. A first water outlet 23 is arranged on the processing cavity 21 and close to the top. The water body enters the water treatment unit from the water inlet unit 1, enters the precipitation unit 3 from the first water outlet 23 after being purified by the biological rope packing 22, the first water outlet 23 is positioned in the area, close to the top, of the treatment cavity 21, the treatment cavity 21 freely falls in the precipitation unit 3 after treating water flowing out of the first water outlet 23, and the size of the first water outlet 23 can be determined according to the inflow water flow. The bottom of the treatment cavity 21 is provided with a water outlet 24, and the water outlet 24 is used for discharging water and sludge.

As shown in fig. 1 and fig. 4, the sedimentation unit 3 includes a sedimentation tank 31 located at the top of the rockery 5, the external shape of the sedimentation tank 31 may be a cylinder, a rectangular cylinder, or the like, a water inlet 32 and a second water outlet 33 are provided on the sedimentation tank 31, the water inlet 32 is located at the downstream of the first water outlet 23, the water body flows out from the first water outlet 23 and then enters the sedimentation tank 31 through the water inlet 32, and a sludge discharge port 34 is provided at the bottom of the sedimentation tank 31 for discharging sludge. The position and size of the second water outlet 33 is determined by the kinetic energy requirement of the effluent stream to drive the aeration unit 4.

As shown in fig. 1 and 5, the aeration unit 4 comprises one, two or more aeration rotary discs 41, the aeration rotary discs 41 are positioned at the downstream of the second water outlet 33, the aeration rotary discs 41 are arranged on the display surface 52 of the rockery 5, the aeration rotary discs 41 are driven to rotate after water flows out of the second water outlet 33, and the distance between the aeration unit 4 and the rockery 5 is determined by the horizontal distance between the rockery and the outlet of the sedimentation unit 3 when water falls.

As shown in fig. 1, 2 and 10, the purification system further comprises a first pipe 61, and the top end of the first pipe 61 is communicated with the sludge discharge port 34 for discharging the water body and the sludge in the sedimentation tank 31. The first pipe 61 may be made of plastic or corrosion-resistant metal material, the size of the first pipe 61 may be determined according to sludge concentration so as to discharge sludge of the water treatment unit 2 and the precipitation unit 3, the first pipe 61 may be positioned on the back or side of the rockery, and the upper portion of the first pipe 61 is in sealed connection with the precipitation unit sludge discharge port. The first pipe 61 is provided with a return pipe 62, the return pipe 62 is communicated with the treatment chamber 21, and the water outlet of the return pipe 62 is generally arranged at a horizontal position which is approximately 1/3 of the height of the treatment chamber from the bottom. The drain port 24 communicates with the first pipe 61 through a second pipe 63, and water and sludge in the treatment chamber 21 are discharged into the first pipe 61 through the second pipe 63.

The operation working conditions of the invention are divided into a treatment working condition, a sludge discharge working condition and a reflux working condition. When the working condition is treated, an external landscape water body is introduced into the water treatment unit 2 through the water inlet unit 1, flows into the precipitation unit 3 after being treated, flows out of the water outlet of the precipitation unit 3, drives the landscape aeration rotary disc 41 to move to aerate the landscape water body, forms a landscape aeration effect, and drives the turbulence device in the water treatment unit to move. And when the sludge is discharged, the water inlet unit 1 is temporarily stopped to discharge sludge at the bottom of the sedimentation tank or treat sludge at the bottom of the treatment tank. And under the reflux working condition, the water inlet unit 1 is suspended to operate, and part of sludge at the bottom of the sedimentation tank flows back to the treatment unit of the tank.

As shown in fig. 1, 3 and 9, preferably, the treatment cavity 21 is provided with at least one flow disturbing device 25, each aeration turntable 41 is sleeved on a rotating shaft 42, the rotating shaft 42 penetrates through the rockery 5 and extends into the treatment cavity 21, and the flow disturbing device 25 is arranged at the other end of the rotating shaft 42. Preferably, the spoiler 25 includes a first connecting ring 251 sleeved on the rotating shaft 42 and a plurality of first blades 252 fixed on the first connecting ring 251 and uniformly distributed along the circumference of the first connecting ring 251, one end of each first blade 252 is fixed on the first connecting ring 251, and the other end is provided with a bending portion 253 bent in the same direction. The number of the first blades 252 is preferably more than 8, the longitudinal length is equal, the transverse width is equal, the longitudinal length is slightly smaller than the cross rod of the turntable, and the transverse width is determined according to the turbulence requirement. First blade 252 is made by light material, and the portion of bending 253 is made by light material, and the installation contained angle between the portion of bending 253 and the first blade 252 longitudinal direction is confirmed according to the vortex demand, preferably is greater than 90, and the horizontal width of the portion of bending 253 equals with the horizontal width of first blade 252, and vertical length is confirmed according to the vortex demand. The turbulence device 25 is positioned in the treatment cavity, can drive the water body to be treated to move when rotating, and is not contacted with the biological rope filler.

As shown in fig. 1 and 8, preferably, the aeration turntable 41 includes a second connecting ring 411 sleeved on the rotating shaft 42, and a plurality of second blades 412 fixed on the second connecting ring 411 and uniformly distributed along the circumference of the second connecting ring 411, one end of each second blade 412 is fixed on the second connecting ring 411, the other end is provided with two cross bars 413 distributed in the same direction, a space is left between the two cross bars 413, a water bucket is formed between the two cross bars 413 and the second blade 412, the cross bars 413 on the plurality of second blades 412 are arranged in the same direction, and the number of the second blades 412 is more than 8, the longitudinal lengths are equal, and the transverse widths are equal. The plane of the opening of the bucket is parallel to the side surface of the second blade 412, so that acting force is generated on the second blade 412 by water in the bucket, the length of the cross rod 413 is equal to 1/3 of the longitudinal length of the second blade 412, and the width of the cross rod along the transverse direction of the second blade 412 is the same as the transverse width of the second blade 412. The length of the second blade 412 is controlled by conditions that facilitate rotation of the second blade 412, preferably greater than 20cm. The second blade 412 is made of a light material to facilitate the propulsion of the water flow. The aeration turntable 41 can synchronously drive the turbulence device 25 to rotate when rotating, the rotation of the turbulence device 25 can improve the purification effect of the water body in the treatment cavity 21, and the rotation of the turbulence device 25 utilizes the energy generated when the aeration turntable 41 rotates.

As shown in fig. 1 and 7, preferably, a plurality of aeration rotary discs 41 are arranged along the display surface 52 of the rockery 5 in a staggered manner from top to bottom, so that the water from the water bucket of the previous aeration rotary disc 41 can enter the water bucket of the next aeration rotary disc 41 to drive the next aeration rotary disc to rotate.

As shown in fig. 1, 5 and 6, preferably, a fixed tube 53 is disposed in the rockery 5, the rotating shaft 42 is located in the fixed tube 53, the fixed tube 53 is fixed in the rockery 5 to protect the rotating shaft 42, one end of the fixed tube 53 extends into the processing chamber 21, the other end extends out of the rockery 5, bearings 54 are respectively embedded in the fixed tube 53 at positions close to the two ends, the rotating shaft 42 sequentially passes through the two bearings 54 and extends into the processing chamber 21, and the bearings 54 connected to the processing chamber 21 need to be subjected to waterproof treatment, for example, by a conventional oil sealing technique.

As shown in fig. 1 and 2, preferably, a flange 26 is provided at the top of the processing chamber 21, the flange 26 may be a cylinder or a rectangular body, an air inlet hole 261 is provided on the flange 26, the height of the flange 26 is usually 0.5m or more, an openable cover plate is provided at the top of the air inlet hole 261, the horizontal cross-sectional dimension of the air inlet hole 261 is preferably suitable for an adult, the four peripheral surfaces are generally made of grid bars or perforated plates, and the gaps in the four peripheral surfaces account for more than 50% of the total area of the four peripheral surfaces. An escalator 262 is arranged in the treatment cavity 21, the top of the escalator 262 is positioned below the air-permeable manhole 261 to a mud deposition area of the treatment cavity 21, the escalator 262 is suitable for a single person to move up and down, is made of an antirust and anticorrosive material and is fixed on the inner wall of the treatment cavity 21.

Preferably, the material of the bio-rope filler 22 is polypropylene and/or vinylon, and the material of the geotextile type filler is non-woven geotextile. The outer diameter of the biological rope filler 22 is 80-120 mm, and the specific surface area of the biological rope filler 22 is 1.6-2.4 m ² And/m. The bio-rope filler 22 suspended in the treatment cavity can generate a biofilm on the surface of the bio-rope filler, the biofilm can remove pollutants in the water body, sludge is formed after the biofilm ages and is settled to the bottom of the treatment cavity 21, and sludge which is not completely settled can enter a sedimentation tank along with effluent for further settlement.

As shown in fig. 1, preferably, the bottom of the treatment cavity 21 is in an inverted cone shape, and the bottom of the sedimentation tank 31 is in an inverted cone shape, which is beneficial for sludge to be deposited to the lowest part, so as to facilitate the discharge of sludge.

As shown in fig. 1 and 4, preferably, a cover plate 35 is disposed on the top of the sedimentation tank 31, a partition plate 36 is disposed on the bottom of the cover plate 35, and the partition plate 36 is spaced from the bottom of the sedimentation tank 31. The partition plate 36 can divide the effective water storage space in the tank body into two parts, and the height of the partition plate 36 is about 4/5 of the effective water storage height of the tank body. The effective water storage height of the tank body is generally from the horizontal plane at the joint of the vertical plane and the bottom plane of the sedimentation tank 31 to the cover plate 35 at the top of the tank body, and the height is generally more than 2.5m. The size of the sedimentation tank 31 is determined according to the water storage requirement and the landscape aeration turntable operation requirement. The water outlet of the water treatment unit 2 enters from the water inlet 32, descends firstly, bypasses the partition plate 36 and then ascends to the second water outlet 33 to be discharged, and the sludge contained in the water is precipitated to the bottom surface of the lower part in the water body movement process and can be discharged through the sludge discharge port 34. The size of the sludge discharge port 34 is determined to facilitate the discharge of sludge. The discharged sludge contains microorganisms capable of purifying water and can flow back to the treatment cavity 21 to promote the formation of a biological film on the surface of the biological rope filler 22.

As shown in fig. 1 and 10, preferably, the first pipe 61 is provided at its end with a first shut-off valve 611, and the return pipe 62 is provided with a second shut-off valve 621. When the operating conditions are processed, the first shut-off valve 611 and the second shut-off valve 621 are closed; when the reflux is required, the second shut-off valve 621 is opened and the first shut-off valve 611 is closed; when sludge discharge is required, the second shut-off valve 621 is closed, and the first shut-off valve 611 is opened.

The invention takes the multiple average experimental data as an example: DO and BOD of water body needing purification from outside ₅ 、NH ₃ Average concentration of N and TP is 3.0mg/L, 20mg/L, 2.0mg/L and 0.35mg/L respectively, DO and BOD of effluent after system treatment ₅ 、NH ₃ The average concentrations of-N and TP were 7.5mg/L, 4.0mg/L, 1.6mg/L, and 0.28mg/L, respectively.

In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a clean system suitable for false mountain water which characterized in that: comprises a water inlet unit (1), a water treatment unit (2), a sedimentation unit (3) and an aeration unit (4) which are arranged in sequence along the flow direction of a water body;

the water inlet unit (1) comprises a water inlet pipe (11), and a water pump (12) is arranged on the water inlet pipe (11);

the water treatment unit (2) comprises a treatment cavity (21) positioned on the back display surface (51) of the rockery (5), the water outlet of the water inlet pipe (11) is connected to the position, close to the bottom, of the treatment cavity (21), a plurality of biological rope fillers (22) are hung in the treatment cavity (21), a first water outlet (23) is arranged on the position, close to the top, of the treatment cavity (21), and a water outlet (24) is arranged at the bottom of the treatment cavity (21);

the sedimentation unit (3) comprises a sedimentation tank (31) positioned at the top of the rockery (5), a water inlet (32) and a second water outlet (33) are arranged on the sedimentation tank (31), the water inlet (32) is positioned at the downstream of the first water outlet (23), and a sludge discharge port (34) is arranged at the bottom of the sedimentation tank (31);

the aeration unit (4) comprises at least one aeration rotary disc (41), the aeration rotary disc (41) is positioned at the downstream of the second water outlet (33), and the aeration rotary disc (41) is arranged on a display surface (52) of the rockery (5);

the purification system further comprises a first pipeline (61), the top end of the first pipeline (61) is communicated with the sludge discharge port (34), a return pipe (62) is arranged on the first pipeline (61), the return pipe (62) is communicated with the treatment cavity (21), and the water discharge port (24) is communicated with the first pipeline (61) through a second pipeline (63);

the treatment cavity (21) is provided with at least one turbulence device (25), each aeration turntable (41) is sleeved on a rotating shaft (42), the rotating shaft (42) penetrates through the rockery (5) and extends into the treatment cavity (21), and the turbulence device (25) is arranged at the other end of the rotating shaft (42);

aeration carousel (41) is including the cover establish second clamping ring (411) and a plurality of the fixing on pivot (42) second blade (412) that follow second clamping ring (411) circumference equipartition on second clamping ring (411), every the one end of second blade (412) is fixed on second clamping ring (411), the other end is equipped with two syntropy distributed's horizontal pole (413), and two leave the interval between horizontal pole (413), it is a plurality of horizontal pole (413) syntropy setting on second blade (412).

2. The purification system for a body of water in a rockery of claim 1, wherein: the turbulence device (25) comprises a first connecting ring (251) sleeved on the rotating shaft (42) and a plurality of first blades (252) fixed on the first connecting ring (251) and uniformly distributed along the circumferential direction of the first connecting ring (251), one end of each first blade (252) is fixed on the first connecting ring (251), and the other end of each first blade is provided with a bending part (253) bent in the same direction.

3. The purification system for a body of water in a rockery of claim 1, wherein: be equipped with fixed pipe (53) in artificial hillock (5), the one end of fixed pipe (53) stretches into in handling cavity (21), the other end stretches out artificial hillock (5), the position that is close to both ends in fixed pipe (53) respectively inlays establishes a bearing (54), pivot (42) pass two bearings (54) in proper order and stretch into in handling cavity (21).

4. The purification system for a body of water in a rockery of claim 1, wherein: the top of processing cavity (21) is equipped with flange (26), be equipped with ventilative manhole (261) on flange (26), be equipped with staircase (262) in processing cavity (21), the top of staircase (262) is located the below of ventilative manhole (261).

5. The purification system for a body of water in a rockery of claim 1, wherein: the bottom of processing cavity (21) is the back taper form, the bottom of sedimentation tank (31) is the back taper form.

6. The purification system for a body of water in a rockery of claim 1, wherein: the top of sedimentation tank (31) is equipped with apron (35), the bottom of apron (35) is equipped with baffle (36), baffle (36) with the bottom of sedimentation tank (31) leaves the interval.

7. The purification system for a body of water in a rockery of claim 1, wherein: the plurality of aeration rotary tables (41) are arranged along the display surface (52) of the rockery (5) from top to bottom in a staggered manner.

8. The purification system for a body of water in a rockery of claim 1, wherein: the tail end of the first pipeline (61) is provided with a first closing valve (611), and the return pipe (62) is provided with a second closing valve (621).