CN107434301B - Vegetation filters slot - Google Patents

Abstract

The invention discloses a vegetation filtering trench, comprising a trench main body, wherein the trench main body is composed of a water collecting area and a drainage area which are connected with each other; Below is a water purification area, a plurality of siphon pipes are installed on the upper surface of the water purification area, the siphon pipes are connected with the drainage pipe, and the outlet of the drainage pipe extends into the drainage area; the top of the drainage area is provided with a cover plate. The vegetation filtering groove of the invention removes non-point source pollution through multi-layer structure connection, and the siphon pipe installed on the upper surface of the water purification filter material can improve the drainage effect of the groove when the water volume increases sharply during the rainstorm period, thereby improving the drainage of the groove. On the other hand, the suction of the siphon action can be used to remove the sludge on the surface of the purification filter material, so as to achieve the effect of self-cleaning and improve the filtration capacity of the filter material.

Description

A vegetation filter groove

technical field

The invention relates to a vegetation filtering groove, which belongs to the technical field of rain and sewage diversion.

Background technique

At present, in response to the increasingly serious problem of water pollution, there are more and more treatment facilities and more and more requirements for river sewage purification and rainwater collection. While focusing on flood control and management, keep up with the pace of the times, beautify the urban environment, build modern river courses, and form a small area riverside landscape belt along the river course in combination with the needs of ecological engineering and green landscape layout to create a comfortable new environment. The existing vegetation filter groove has only one cavity, and the bottom of the cavity is connected with a drainage pipe. After the rainwater in the vegetation filter groove is filtered by the filter material, it directly drains through the drainage port at the bottom of the cavity. A lot of silt will accumulate in the tank, which will lead to the decline of its filtration performance. In addition, when the rainfall is heavy, a large amount of water will accumulate in the groove and the filter layer will not have time to filter and drain water in time.

SUMMARY OF THE INVENTION

Purpose of the invention: The technical problem to be solved by the present invention is to provide a new type of vegetation filtering groove. The groove is provided with two independent cavities and a siphon device. The siphon device can self-clean the purification filter material in time. It can effectively improve the efficiency of purification and drainage of the device, and there will be no problem of water accumulation leading to untimely drainage when the rainfall is heavy.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A vegetation filtering groove, comprising a groove main body, the groove main body is composed of a water collecting area and a drainage area that are connected to each other; A plurality of siphon pipes are installed on the upper surface of the water purification area, the siphon pipes are connected with the drainage pipe, and the outlet of the drainage pipe extends into the drainage area; the top of the drainage area is provided with a cover plate.

Wherein, a spacer is arranged between the water collection area and the drainage area, a water outlet is arranged at the bottom of the spacer, and the water collection area and the drainage area are communicated through the water outlet.

Wherein, the purification filter material in the water purification zone is composed of 20% by mass of pebbles, 50% of crushed stones, 15% of acid-modified attapulgite and 15% of coral sand.

Wherein, an intercepting mesh cover is sleeved at the outlet of the drainage pipe.

Wherein, the arrangement of the purification filter material in the water purification zone is as follows: in the longitudinal direction, the layers are cobblestone layer, gravel layer, acid-modified attapulgite soil layer and coral sand layer. The goose warm stone is relatively smooth, and the silt covered by the top layer is easily sucked out by the siphon. The crushed stone with large particles is placed in the middle of the water purification area to prevent the acid-modified attapulgite and coral sand with small particles from floating up under the action of water flow. .

Wherein, the intercepting mesh cover is a double-layer steel mesh filled with cotton gauze in the middle.

Compared with the prior art, the beneficial effects of the technical solution of the present invention are:

The vegetation filtering groove of the invention removes non-point source pollution through multi-layer structure connection, and the siphon installed on the upper surface of the water purification filter material can improve the drainage effect of the groove on the one hand, thereby improving the drainage stability of the groove; The suction of the siphon action can be used to remove the sludge on the surface of the purification filter material, so as to achieve the effect of self-cleaning and improve the filtration capacity of the filter material.

Description of drawings

FIG. 1 is a schematic structural diagram of a vegetation filtering groove of the present invention.

Figure 2 is a schematic diagram of the structure of the water purification zone of the present invention.

Detailed ways

The technical solutions of the present invention will be further described below with reference to the accompanying drawings, but the claimed scope of the present invention is not limited thereto.

As shown in FIG. 1 , the vegetation filtering trench of the present invention includes a trench main body 10 made of concrete, and the trench main body 10 is composed of a water collection area 1 and a drainage area 2 that are connected to each other; the top of the water collection area 1 is erected with Vegetation planting area 3. Below the vegetation planting area 3 is the water purification area 4. The water purification area 4 is located in the catchment area 1. Stone, 15% acid-modified attapulgite and 15% coral sand 14, a plurality of siphon pipes 5 are installed on the upper surface of the water purification zone 4, the siphon pipes 5 are inserted into the upper surface of the purification filter material, and the siphon pipes 5 pass through the main pipe and the drain pipe 6 is connected, the outlet of the drainage pipe 6 extends into the drainage area 2, the height of the outlet of the drainage pipe 6 is lower than the height of the inlet of the siphon pipe 5, and the outlet of the drainage pipe 6 is set with an intercepting mesh cover 8, and the intercepting mesh cover 8 is filled with cotton yarn in the middle. The cloth double-layer steel wire mesh, the intercepting mesh cover 8 is buckled on the outlet of the drainage pipe 6; the top of the drainage area 2 is provided with a cover plate 9, and the cover plate 9 is embedded with an iron ring to facilitate the opening and closing of the cover plate 9; A spacer 11 is provided between the spacer and the drainage area 2 , and a water outlet 7 is arranged at the bottom of the spacer 11 , and the water collection area 1 and the drainage area 2 communicate with each other through the water outlet 7 . The siphon 5 provided in the vegetation filtering groove of the present invention can timely remove the sludge that blocks the purification filter material, thereby ensuring the purification filter material to work efficiently for a long time, collect and process the initial rainwater in time, and achieve the effect of controlling non-point source pollution.

As shown in FIG. 2 , the purification filter materials in the water purification zone 4 are, in the longitudinal order, a pebble layer 12 , a gravel layer 13 , an acid-modified attapulgite layer 14 and a coral sand layer 15 , and the purification filter materials are arranged in order of particle size. The goose warm stone is relatively smooth, and the silt covered when it is placed on the top layer is easily sucked out by the siphon 5. The crushed stone with large particles is placed in the middle of the water purification zone 4 to prevent the acid-modified attapulgite and coral sand with small particles from being affected by water flow. The effect is floating, and in this order, the filtering effect of the water purification zone 4 can be guaranteed, and the system stability can be improved.

The vegetation filtering groove of the present invention is installed at the position of the river dam, plays the role of high-water bank protection and the protective belt of the dam, and ensures the stability of water purification treatment. The vegetation filtering groove of the present invention removes non-point source pollution through multi-layer structure connection, and the present invention adopts water purification filter material for filtering. The stability of the system; on the other hand, the suction force of the siphon action can be used to remove the sludge on the surface of the purification filter material to achieve the effect of self-cleaning and improve the filtration capacity of the filter material; the cover plate 9 on the drainage area 2 is in a closed state when working, When it is sunny, open the cover 9, take out the intercepting mesh cover 8 at the outlet of the drain pipe 6, take out the gauze with sludge in the intercepting mesh cover 8, and then replace the new yarn and arrange it in the double-layer wire mesh.

When the rainfall is not large, the rainwater passes through the vegetation planting area 3 and falls into the water collection area 1. After being purified and filtered by the water purification area 4, it enters the drainage area 2 from the water outlet 7, and the drainage area 2 directly discharges the treated purified water. Into the river, as long as the amount of water in the drainage area 2 submerges the outlet of the drainage pipe 6, the water in the drainage area 2 is flowing and the pressure decreases, which will cause the siphon 5 to produce a siphon phenomenon. The accumulated water in the catchment area 1 can be removed, on the one hand, the sludge on the surface of the purification filter material can be taken away; when the rainfall is heavy (the rainwater in the catchment area 1 is simultaneously discharged into the drainage area 2 through the siphon 5 and the water outlet 7) , the rainwater enters the catchment area 1, and the rainwater is discharged into the drainage area 2 through the siphon effect of the siphon pipe 5. The sludge in the rainwater that has not been filtered by the purifying filter material can be intercepted by the intercepting mesh cover 8 at the outlet of the drainage pipe 6. The rainwater purified and filtered by the water purification zone 4 enters the drainage zone 2 from the water outlet 7. When the accumulated rainfall in the catchment zone 1 is lower than the water level of the siphon action (while the water volume in the drainage zone 2 is also lower than the outlet of the drainage pipe 6) time), the rainwater purified and filtered by the water purification zone 4 enters the drainage zone 2 through the water outlet 7, and the drainage zone 2 directly discharges the purified water into the river.

In the existing U-shaped or concave-shaped grooves, the water purification area and the drainage area are located in the same cavity. When the rainwater volume surges when the rainstorm comes, the drainage capacity of the groove drainage pipe is insufficient, which will cause the rainwater to accumulate in the water purification area. Can not be discharged in time, so that the purification area loses the purification effect; the groove of the present invention sets the groove main body 10 into a "mountain" shape, separates the water purification area and the drainage area, and can improve the working efficiency of the device while increasing the space. It plays a buffering role when the water volume increases sharply in heavy rain and rainstorm weather, and enhances the water storage capacity of the device. Extending the vegetation planting area 3 into the trench can prevent the vegetation from being eroded and damaged when the water volume is too large.

Obviously, the above-mentioned embodiments are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. However, these obvious changes or changes derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims (3)

1. A vegetation filter trench characterized by: the water collecting and draining ditch comprises a ditch main body, wherein the ditch main body consists of a water collecting area and a water draining area which are communicated with each other; the vegetation planting area is erected on the top end of the water collecting area, the water quality purifying area is arranged below the vegetation planting area and located in the water collecting area, and the arrangement mode of the purifying filter material of the water quality purifying area is as follows: the cobble layer, the gravel layer, the acid modified attapulgite layer and the coral sand layer are sequentially arranged in the longitudinal direction; the upper surface of the water quality purification area is provided with a plurality of siphons, the siphons are inserted into the upper surface of the purification filter material and are communicated with a drain pipe, the outlet of the drain pipe extends into the drainage area, and the outlet of the drain pipe is sleeved with an interception mesh enclosure; the height of the outlet of the drain pipe is lower than that of the inlet of the siphon pipe; the top of the drainage area is provided with a cover plate; the groove main body is in a shape of Chinese character 'shan'; be equipped with the interval portion between catchment district and the drainage zone, the interval portion bottom is equipped with the delivery port, and catchment district and drainage zone pass through the delivery port intercommunication.

2. The vegetation filter trough of claim 1, wherein: the purification filter material of the water quality purification area consists of 20 mass percent of cobbles, 50 mass percent of broken stones, 15 mass percent of acid modified attapulgite and 15 mass percent of coral sand.

3. The vegetation filter trough of claim 1, wherein: the intercepting net cover is a double-layer steel wire mesh with cotton gauze filled in the middle.

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