CN210885522U - Vertical subsurface flow constructed wetland for sewage treatment - Google Patents

Abstract

The utility model provides a vertical undercurrent constructed wetland for sewage treatment, including wetland cell body and the matrix matched stack that is located wetland cell body inside, the top and the bottom of matrix matched stack are provided with the level respectively and go deep into upper water distribution pipe and the lower floor that the matrix matched stack is inside and receive the water pipe, the right-hand member of upper water distribution pipe is close to the right side wall setting of vertical undercurrent constructed wetland, the left end of upper water distribution pipe is close to the left side wall of vertical undercurrent constructed wetland, the right-hand member of lower floor receipts water pipe passes the right side wall of vertical undercurrent constructed wetland and is connected with the outlet channel that sets up on the right side of vertical undercurrent constructed wetland, the inside of vertical undercurrent constructed wetland is provided with the valve well that holds lower floor and receives the water pipe and pass through that is located between matrix matched stack and the outlet channel, the inside of valve well is provided with the drainage valve that whether control lower, Good nitrogen removal effect and convenient cleaning and maintenance.

Description

Vertical subsurface flow constructed wetland for sewage treatment

Technical Field

The utility model relates to an environmental protection engineering technical field especially relates to a perpendicular undercurrent constructed wetland for sewage treatment.

Background

The artificial wetland is a technology for treating sewage by controlling and dosing the sewage onto the constructed wetland from a constructed and controlled ground similar to a marshland, and mainly utilizing the physical, chemical and biological triple synergistic effects of soil, artificial media, plants and microorganisms in the process of flowing the sewage along a certain direction. The mainstream artificial wetland types at present are generally divided into a surface flow artificial wetland system and an undercurrent artificial wetland system, wherein the undercurrent artificial wetland system takes hydrophilic plants as surface greening substances and sandstone soil as fillers to naturally permeate and filter water, and the artificial landscape has the characteristics of no surface water, small occupied area, high utilization rate, convenient maintenance and the like, is well favored by people, so the artificial wetland system has a dominant position in the sewage treatment of small water volume.

However, the artificial wetland still has some disadvantages, firstly, some substances which can not be absorbed by the matrix assembly exist in the sewage more or less, and a part of the substances are accumulated in the matrix assembly to block the gap of the matrix assembly, and particularly, the blocking condition is easy to generate at the water distribution port of the vertical subsurface flow artificial wetland, while the existing vertical subsurface flow artificial wetland is only provided with one water distribution port, which further aggravates the blocking condition, and meanwhile, because the water distribution port of the existing vertical subsurface flow artificial wetland is generally positioned at one end of the vertical subsurface flow artificial wetland, the upper matrix assembly at one end far away from the water distribution port in the vertical subsurface flow artificial wetland often does not play a role, thereby causing waste; secondly, the sewage liquid level of the existing vertical subsurface flow artificial wetland has higher descending speed and uneven descending speed, and the stable descending of the sewage liquid level can not be ensured, so that air can not enter the lower part of the vertical subsurface flow artificial wetland from a matrix assembly gap, and the problem of insufficient reoxygenation capability in the vertical subsurface flow artificial wetland is solved; finally, the conventional vertical subsurface flow constructed wetland has a rough treatment effect on the water discharge port, and is generally connected to other equipment through a drainage pipeline, so that extra occupied space and equipment loss are increased, and the storage equipment is very troublesome to maintain.

Disclosure of Invention

The utility model aims to provide a: the utility model provides a to perpendicular undercurrent constructed wetland for sewage treatment's perpendicular undercurrent constructed wetland because the jam problem that the water distribution mouth position unscientific arouses, the oxygen deficiency problem that the water receiving mouth position unscientific arouses and because do not have the trouble problem of occupation of land space that dedicated drainage equipment arouses big, the equipment loss is serious, drainage pipe clearance.

The utility model adopts the technical scheme as follows: a vertical subsurface flow constructed wetland for sewage treatment comprises a wetland tank body and a substrate assembly positioned in the wetland tank body, wherein the top and the bottom of the substrate assembly are respectively provided with an upper layer water distribution pipe and a lower layer water collection pipe which horizontally extend into the substrate assembly, the left end of the upper layer water distribution pipe passes through the left side wall of the wetland tank body and is connected with a sewage inlet pipeline arranged at the left side of the wetland tank body, the right end of the upper layer water distribution pipe is arranged close to the right side wall of the vertical subsurface flow constructed wetland so as to cover the upper part of the whole substrate assembly, the left end of the lower layer water collection pipe is close to the left side wall of the vertical subsurface flow constructed wetland so as to cover the lower part of the whole substrate assembly, the right end of the lower layer water collection pipe passes through the right side wall of the vertical subsurface flow constructed wetland and is connected with a water outlet channel arranged at the right side of the vertical subsurface flow constructed wetland, an emergent aquatic plant is arranged above the substrate assembly, the emergent aquatic plant is uniformly distributed above, the vertical subsurface flow constructed wetland is internally provided with a valve well which is positioned between the substrate assembly and the water outlet channel and used for accommodating the lower water collecting pipe to pass through, and the valve well is internally provided with a drainage valve for controlling the lower water collecting pipe to drain water.

As a preferable mode, the substrate assembly comprises a plurality of substrate layers which are all arranged in parallel and are uniformly arranged from top to bottom, the upper water distribution pipe is positioned inside the uppermost substrate layer in the substrate assembly, and the lower water collection pipe is positioned inside the lowermost substrate layer in the substrate assembly.

As a preferable mode, the bottom of the wetland tank body is composed of an impermeable layer.

As a preferred way, the bottom of the valve well penetrates into the barrier.

As a preferable mode, the water outlet channel is arranged close to the outer side wall of the wetland tank body, the valve well is arranged close to the inner side wall of the wetland tank body, the heights of the bottoms of the water outlet channel and the valve well are the same, and the front and back positions of the water outlet channel and the front and back positions of the valve well are also the same.

As a preferable mode, the top ends of the left side wall and the right side wall of the wetland pool body are higher than the substrate assembly, the top of the valve well is provided with a valve well cover which is opened upwards, and the valve well cover is horizontally arranged and is highly arranged between the substrate assembly and the top ends of the left side wall and the right side wall of the wetland pool body.

As an optimal mode, the bottom of the wetland tank body is positioned below the ground, the left end of the wetland tank body is provided with a water inlet which is higher than the ground and is used for accommodating the upper-layer water distribution pipe to pass through, the right end of the water outlet channel is provided with a water outlet, and the water outlet is arranged below the water inlet.

As a preferable mode, the drain valve is an electrically operated valve.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses an upper water distribution pipe covers the top of whole matrix matched stack, can be through the mode that sets up a plurality of water distribution mouths on the water distribution pipe of upper strata, make sewage get into the dispersion of the position of matrix matched stack as far as possible, slow down the inside speed of piling up that is difficult to by the absorbed matter of constructed wetland, reduce the jam probability of the inside matrix matched stack of perpendicular undercurrent constructed wetland, it can make pending sewage dispersion pass through the matrix matched stack and finally get into the lower floor and receive the water pipe to combine the lower floor to receive the water pipe, the purification performance of the different position matrix matched stacks of maximize performance as far as possible.

2. The utility model discloses a lower floor receives the below that the water pipe covered whole matrix matched stack, combines the upper water distributor to guarantee that the inside sewage liquid level of perpendicular undercurrent constructed wetland is in the slow decline in drainage stage, and the air enters into the inside of whole perpendicular undercurrent constructed wetland along with the clearance of matrix matched stack, can reach the effect of the natural reoxygenation of lower floor's matrix matched stack, makes the good oxygen-anaerobism environment in turn of microorganism manager, improves the efficiency of perpendicular undercurrent constructed wetland denitrogenation.

3. The utility model discloses a valve well, the setting of outlet channel and drainage valve, can in time control the beginning and the stopping in perpendicular undercurrent constructed wetland drainage stage to the discharge outlet through the outlet channel is less than the setting of wetland cell body water inlet, can not need the secondary to promote sewage, directly has reduced the running cost of equipment, the setting of valve well also can be timely maintains and changes drainage valve simultaneously, and when lower floor received the water pipe and blockked up, can carry out the cleaning work in the valve well, more convenient and fast.

4. The utility model discloses a bottom of wetland cell body comprises the barrier layer, prevents that sewage from infiltrating to pollute soil in the soil around to go deep into the barrier layer with the bottom of valve well, thereby prevent that sewage from permeating to soil from the bottom of valve well.

5. The utility model discloses a lateral wall setting of the adjacent wetland cell body of outlet channel, the inside wall setting of the adjacent wetland cell body of valve well, the bottom height of outlet channel and valve well is the same and the front and back position of outlet channel is also the same with the front and back position of valve well, and compact structure science has reduced area to indirect reduce the cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the connection between the lower water distribution pipes and the water outlet channels;

FIG. 4 is a schematic view showing the connection between the water main and the water branch pipes in the lower water collecting pipes.

Labeled as: 1-wetland pool body, 2-substrate assembly, 3-upper water distribution pipe, 4-lower water collection pipe, 5-sewage inlet pipe, 6-water outlet channel, 7-emergent aquatic plant, 8-valve well, 9-drainage valve, 10-impermeable layer, 12-valve well cover, 13-water inlet, 14-water outlet, 15-substrate layer, 16-main water delivery pipe, 17-branch water delivery pipe, 18-left partition board and 19-right partition board.

Detailed Description

All features disclosed in this specification may be combined in any combination, except features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 1 to 4.

Example 1:

a vertical subsurface flow constructed wetland for sewage treatment comprises a wetland tank body 1 and a matrix assembly 2 positioned in the wetland tank body 1. The utility model provides a matrix matched stack 2 includes a plurality of matrix layers 15, a plurality of matrix layers 15 all parallel arrangement and from top to bottom align to grid, be located matrix layer 15 of the superiors in matrix matched stack 2 and be provided with the level and go deep into upper cloth water pipe 3 in matrix matched stack 2, the left end of upper cloth water pipe 3 passes the water inlet 13 that sets up on the left side wall of wetland cell body 1 and extends left, the left end of upper cloth water pipe 3 is connected with the sewage inlet channel 5 that sets up on the left of wetland cell body 1, the right-hand member of upper cloth water pipe 3 is close to the right side wall setting of adjacent vertical undercurrent constructed wetland, thereby cover the top of whole matrix matched stack 2; the lower layer water collecting pipe 4 horizontally extending into the matrix assembly 2 is arranged in the matrix layer 15 at the lowest layer in the matrix assembly 2, the left end of the lower layer water collecting pipe 4 is arranged close to the left side wall of the vertical subsurface flow artificial wetland so as to cover the lower part of the whole matrix assembly 2, the upper layer water distribution pipe 3 and the lower layer water collecting pipe 4 in the embodiment respectively comprise a water conveying main pipe 16 horizontally arranged along the left and right sides and a plurality of water conveying branch pipes 17 which are arranged at the front side and the rear side of the water conveying main pipe 16 and are vertical to the water conveying main pipe 16, the water conveying branch pipes 17 positioned at the front side of the water conveying main pipe 16 and the rear side of the water conveying main pipe 16 are symmetrically arranged relative to the water conveying main pipe 16, one end of each water conveying branch pipe 17 close to the water conveying main pipe 16 is communicated with the water conveying main pipe 16, and the water conveying branch pipes 17 connected with the same water conveying main.

The bottom of the wetland pool body 1 consists of an impermeable layer 10, and a matrix assembly 2 is arranged above the impermeable layer 10; the left side and the right side of the wetland tank body 1 are respectively provided with a left clapboard 18 and a right clapboard 19 of the wetland tank body 1, the lower ends of the left clapboard 18 and the right clapboard 19 extend into the ground to be tightly connected with an impermeable layer 10, so that the sewage in the matrix assembly 2 is prevented from permeating the soil near the wetland tank body 1, the soil is prevented from being polluted, the upper ends of the left clapboard 18 and the right clapboard 19 are arranged higher than the ground, and a water inlet 13 is arranged at the part of the left clapboard 18 above the ground; the upper part of the wetland pool body 1 is provided with a plurality of emergent aquatic plants 7, the plurality of emergent aquatic plants 7 are uniformly distributed above the substrate assembly 2, the root systems of the emergent aquatic plants 7 are all deep into the substrate assembly 2, and the upper water distribution pipe 3 is inserted among the root systems of the plurality of emergent aquatic plants 7 and is not mutually influenced with the emergent aquatic plants 7, so that convenience is provided for the attachment of microorganisms inside the vertical subsurface flow constructed wetland.

The inside of the right end of the wetland cell body 1 is provided with a valve well 8, the outer side of the right end of the wetland cell body 1 is provided with a water outlet channel 6, the valve well 8 is arranged between the water outlet channel 6 and the matrix assembly 2, the right end of the valve well 8 is arranged close to the inner side wall of the right partition plate 19, the left end of the water outlet channel 6 is arranged close to the outer side wall of the right partition plate 19, meanwhile, the bottom of the valve well 8 extends into the impermeable layer 10, the bottom of the water outlet channel 6 is the same as the bottom of the valve well 8 in height, and the front and back positions of the valve well 8 are the same as the front and back positions of the water outlet channel 6, so that the wetland cell body 1, the valve well 8 and the water outlet channel 6 share the right partition plate 19 for supporting and sealing, thereby preventing sewage from leaking from. Valve well 8's inside is provided with drainage valve 9, drainage valve 9 sets up and is crossing valve well 8 and tiling on the lower floor receipts water pipe 4 of valve well 8 bottom, simultaneously because the right-hand member of lower floor receipts water pipe 4 continues to extend right and is connected with outlet canal 6, so can receive water pipe 4's right-hand member to the interior drainage of outlet canal 6 through drainage valve 9 control lower floor, drainage valve 9 in this embodiment adopts electric valve control, carry out signal of telecommunication through with electric valve and the controlling means who sets up in the 1 outside of wetland cell body, thereby whether remote control lower floor receives water pipe 4 to carry out the drainage, increase the utility model discloses an degree of automation, be prior art to electric valve's control and electric valve and controlgear's being connected, do not do too much introduction here. The top of the valve well 8 is provided with a valve well cover 12 which is opened upwards, the valve well cover 12 is horizontally arranged, and the valve well cover 12 is higher than the substrate assembly 2 and lower than the left partition plate 18 and the right partition plate 19, so that the valve well cover 12 can be conveniently opened to enter the valve well 8 to use and maintain the drainage valve 9; both ends are received through the ring flange and are connected with the lower floor of other positions and receive water pipe 4 about installation drainage valve 9's lower floor's water pipe 4 in this example, and if the convenient inside jam condition that takes place of lower floor's water pipe 4, can clear up the lower floor of other parts and receive water pipe 4 through the mode of receiving water pipe 4 dismantlement of lower floor with installation drainage valve 9. The right end of the water outlet channel 6 is provided with a water outlet 14, the water outlet 14 is arranged below the water inlet 13, a U-shaped pipe structure is formed by the wetland tank body 1, the lower water collecting pipe 4 and the water outlet channel 6, and the water in the water outlet channel 6 can be discharged from the water outlet 14 without secondary lifting because the height of the water inlet 13 is higher than that of the water outlet 14.

In the use process of the utility model, sewage enters the upper layer water distribution pipe 3 from the sewage inlet pipe 5, and the sewage to be treated uniformly flows downwards along the gaps of the substrate assembly 2 and is uniformly distributed in the whole wetland tank body 1 for a period of time, the sewage is purified by different substrate layers 15 and plant roots in the whole process, harmful substances are continuously removed, after the sewage is fully reacted, the opening of an electric valve is controlled by a control device, then the lower water collecting pipe 4 collects the sewage in the whole wetland pool body 1 and conveys the sewage into the water outlet channel 6, the liquid level of the sewage gradually drops in the whole process, air flows downwards along with the clearance of the matrix assembly 2, and the sewage reaching the standard in the water outlet channel 6 is stored or used in other modes in the process of reoxygenation of the whole wetland pool body 1; in the using process of the utility model, after the water is drained from the water outlet channel 6, the utility model can be left unused for a period of time, the blockage of the matrix assembly 2 can be further delayed, and the service life of the vertical subsurface flow constructed wetland is prolonged; in a word the utility model has the advantages of compact structure, low running cost, difficult blockage, good nitrogen removal effect and convenient cleaning and maintenance.

Claims (8)

1. The utility model provides a perpendicular undercurrent constructed wetland for sewage treatment, includes wetland cell body (1) and is located inside matrix group dress (2) of wetland cell body (1), its characterized in that: an upper water distribution pipe (3) and a lower water collection pipe (4) which horizontally penetrate into the matrix assembly (2) are respectively arranged at the top and the bottom of the matrix assembly (2), the left end of the upper water distribution pipe (3) penetrates through the left side wall of the wetland tank body (1) and is connected with a sewage inlet pipeline (5) arranged at the left side of the wetland tank body (1), the right end of the upper water distribution pipe (3) is arranged close to the right side wall of the vertical subsurface flow artificial wetland so as to cover the upper part of the whole matrix assembly (2), the left end of the lower water collection pipe (4) is close to the left side wall of the vertical subsurface flow artificial wetland so as to cover the lower part of the whole matrix assembly (2), the right end of the lower water collection pipe (4) penetrates through the right side wall of the vertical subsurface flow artificial wetland and is connected with a water outlet channel (6) arranged at the right side of the vertical subsurface flow artificial wetland, and an emergent aquatic plant (7) is arranged above the matrix assembly (2, the emergent aquatic plants (7) are uniformly distributed above the substrate assembly (2), the root systems of the emergent aquatic plants (7) are all deep into the substrate assembly (2), a valve well (8) which is positioned between the substrate assembly (2) and the water outlet channel (6) and used for accommodating the lower-layer water collecting pipe (4) to pass through is arranged inside the vertical subsurface flow artificial wetland, and a drainage valve (9) for controlling the lower-layer water collecting pipe (4) to drain water is arranged inside the valve well (8).

2. The vertical subsurface flow constructed wetland for sewage treatment according to claim 1, characterized in that: matrix matched stack (2) includes a plurality of matrix layers, and a plurality of matrix layers all parallel arrangement and from top to bottom align to grid, upper strata cloth water pipe (3) are located the inside of the superiors' matrix layer in matrix matched stack (2), lower floor receives water pipe (4) and is located the inside of the lowest matrix layer in matrix matched stack (2).

3. The vertical subsurface flow constructed wetland for sewage treatment according to claim 1, characterized in that: the bottom of the wetland tank body (1) is composed of an impermeable layer (10).

4. The vertical subsurface flow constructed wetland for sewage treatment according to claim 3, wherein: the bottom of the valve well (8) extends into the impermeable layer (10).

5. The vertical subsurface flow constructed wetland for sewage treatment according to claim 1, characterized in that: the water outlet channel (6) is arranged close to the outer side wall of the wetland tank body (1), the valve well (8) is arranged close to the inner side wall of the wetland tank body (1), the bottoms of the water outlet channel (6) and the valve well (8) are the same in height, and the front and back positions of the water outlet channel (6) are also the same as the front and back positions of the valve well (8).

6. The vertical subsurface flow constructed wetland for sewage treatment according to claim 1, characterized in that: the top of lateral wall all is higher than matrix matched stack (2) setting about wetland cell body (1), the top of valve well (8) is provided with valve well lid (12) of upwards opening, and valve well lid (12) level sets up and highly sets up between the top of lateral wall about matrix matched stack (2) and wetland cell body (1).

7. The vertical subsurface flow constructed wetland for sewage treatment according to claim 1, characterized in that: the bottom of wetland cell body (1) is located the below on ground, and the left end of wetland cell body (1) is provided with and is higher than ground and holds water inlet (13) that upper water distribution pipe (3) pass through, the right-hand member of outlet channel (6) is provided with drain (14), and drain (14) set up in the below of water inlet (13).

8. The vertical subsurface flow constructed wetland for sewage treatment according to claim 1, characterized in that: the drainage valve (9) adopts an electric valve.

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