CN107434301B

CN107434301B - Vegetation filters slot

Info

Publication number: CN107434301B
Application number: CN201710739322.1A
Authority: CN
Inventors: 操家顺; 姚博宇; 薛朝霞; 冯骞; 费罗兰; 方芳
Original assignee: Hohai University HHU
Current assignee: Xingyang Qingyuan Water Co.,Ltd.
Priority date: 2017-08-24
Filing date: 2017-08-24
Publication date: 2020-09-18
Anticipated expiration: 2037-08-24
Also published as: CN107434301A

Abstract

The invention discloses a vegetation filtering groove which comprises a groove main body, wherein the groove main body consists of a water collecting area and a water draining area which are communicated with each other; a vegetation planting area is erected at the top end of the water collecting area, a water quality purifying area is arranged below the vegetation planting area, a plurality of siphons are arranged on the upper surface of the water quality purifying area and communicated with a drain pipe, and an outlet of the drain pipe extends into the drain area; the top of the drainage area is provided with a cover plate. The vegetation filtering groove is connected through a multilayer structure to remove non-point source pollution, and the siphon arranged on the upper surface of the water quality purifying filter material can improve the drainage effect of the groove on the one hand when the water amount is increased sharply in a rainstorm period, so that the drainage stability of the groove is improved; on the other hand, the suction of the siphon action can be utilized to clear and purify the silt on the surface of the filter material, thereby achieving the self-cleaning effect and improving the filtering capacity of the filter material.

Description

Vegetation filters slot

Technical Field

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

Background

At present, aiming at the problem that the pollution of water resources is getting worse, more and more treatment facilities are provided in the aspects of river sewage purification and rainwater collection, and more requirements are provided. When the flood control is mainly used, the method follows the pace of the times, combines the requirements of ecological engineering and green landscape arrangement, beautifies urban environment, builds modern river channels, enables river channel coasts to form small-area river-side landscape zones, and builds a comfortable new environment. Current vegetation filters the slot and has only a cavity, and there is the drain pipe cavity bottom even, and the rainwater in the vegetation filters the slot directly through cavity bottom outlet drainage after the filter material filters, along with the increase of filter time, can the siltation a lot of silt in the filter material to lead to its filtering quality to descend, in addition, can appear water when the rainfall is very big in this ditch inslot and pile up in a large number and come too late filterable drainage also untimely in filter layer department.

Disclosure of Invention

The purpose of the invention is as follows: the technical problem to be solved by the invention is to provide a novel vegetation filtering groove, wherein the groove is provided with two independent cavities and a siphon device, the siphon device can timely and automatically clean sludge on a purifying filter material, the purifying and draining efficiency of the device is effectively improved, and the problem of untimely drainage caused by water accumulation can be avoided when the rainfall is large.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

an vegetation filtration trench comprising a trench body, said trench body consisting of a catchment area and a drainage area in communication with each other; a vegetation planting area is erected at the top end of the water collecting area, a water quality purifying area is arranged below the vegetation planting area, a plurality of siphons are arranged on the upper surface of the water quality purifying area and communicated with a drain pipe, and an outlet of the drain pipe extends into the drain area; the top of the drainage area is provided with a cover plate.

Wherein, be equipped with the interval portion between catchment area and the drainage zone, the interval portion bottom is equipped with the delivery port, and catchment area and drainage zone pass through the delivery port intercommunication.

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.

Wherein, drain pipe exit cover is equipped with the interception screen panel.

Wherein, the purifying filter material in the water purification area is arranged in the following way: the cobble layer, the gravel layer, the acid modified attapulgite layer and the coral sand layer are sequentially arranged in the longitudinal direction. Goose warm stone is more smooth, and the silt that covers when placing the superiors in work is easily sucked out by the siphon, and the rubble that the granule is big is placed in the middle of the quality of water purification district and can be prevented that granule little acid modification attapulgite and coral sand receive the rivers effect come-up.

The intercepting net cover is a double-layer steel wire mesh with cotton gauze filled in the middle.

Compared with the prior art, the technical scheme of the invention has the beneficial effects that:

the vegetation filtering groove is connected through a multilayer structure to remove non-point source pollution, and the siphon arranged on the upper surface of the water quality purifying filter material can improve the drainage effect of the groove on one hand and further improve the drainage stability of the groove; on the other hand, the suction of the siphon action can be utilized to clear and purify the silt on the surface of the filter material, thereby achieving the self-cleaning effect and improving the filtering capacity of the filter material.

Drawings

Fig. 1 is a schematic structural view of a vegetation filter groove of the present invention.

FIG. 2 is a schematic view of the water purification area according to the present invention.

Detailed Description

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

As shown in fig. 1, the vegetation filter trench of the present invention includes a trench body 10 made of concrete, the trench body 10 being composed of a water collecting area 1 and a water discharging area 2 which are communicated with each other; a vegetation planting area 3 is erected at the top end of the water collecting area 1, a water quality purifying area 4 is arranged below the vegetation planting area 3, the water quality purifying area 4 is located in the water collecting area 1, a purifying filter material of the water quality purifying area 4 consists of 20% by mass of cobbles, 50% by mass of broken stones, 15% by mass of acid-modified attapulgite and 15% by mass of coral sand 14, a plurality of siphons 5 are mounted on the upper surface of the water quality purifying area 4, the siphons 5 are inserted into the upper surface of the purifying filter material, the siphons 5 are communicated with a drain pipe 6 through a dry pipe, an outlet of the drain pipe 6 extends into the water discharging area 2, the height of an outlet of the drain pipe 6 is lower than that of an inlet of the siphons 5, an intercepting net cover 8 is sleeved at the outlet of the drain pipe 6, the intercepting net cover 8; a cover plate 9 is arranged at the top of the drainage area 2, and an iron ring is embedded on the cover plate 9 so as to facilitate the opening and closing of the cover plate 9; be equipped with interval 11 between catchment area 1 and the drainage zone 2, interval 11 bottom is equipped with delivery port 7, and catchment area 1 and drainage zone 2 communicate each other through delivery port 7. The vegetation filtering groove can remove the silt blocking the purifying filter material in time through the siphon 5, so that the purifying filter material can work efficiently for a long time, initial rainwater can be collected and treated in time, and the effect of controlling non-point source pollution is achieved.

As shown in figure 2, the purification filter material of the water purification area 4 comprises a cobble layer 12, a gravel layer 13, an acid modified attapulgite layer 14 and a coral sand layer 15 in the longitudinal direction, and the purification filter material is arranged according to the particle size sequence. Goose warm stone is comparatively slick and sly, arranges the silt that the superiors during operation was covered in and is easily by the suction of siphon 5, and the rubble that the granule is big is arranged in the middle of water purification district 4 and can be prevented that the little acid modification attapulgite of granule and coral sand from receiving the rivers effect come-up, can guarantee the filter effect of water purification district 4 according to such sequencing, improves system stability.

The vegetation filtering groove is arranged at the position of a river embankment, plays the roles of high-water bank protection and a dam protection belt and ensures the stability of water purification treatment. The vegetation filtering groove is connected through a multilayer structure to remove non-point source pollution, the water quality purifying filter material is adopted for filtering, and the installed siphon 5 can improve the drainage effect of the groove and the stability of a system when the water amount is increased sharply in a rainstorm period; on the other hand, the sludge on the surface of the filter material can be cleaned and purified by utilizing the suction force of the siphon action, so that the self-cleaning effect is achieved, and the filtering capacity of the filter material is improved; the cover plate 9 on the drainage area 2 is in a closed state when working, when the sun is sunny, the cover plate 9 is opened, the intercepting net cover 8 at the outlet of the drainage pipe 6 is taken out, gauze with sludge in the intercepting net cover 8 is taken out, and then new gauze is replaced and placed in the double-layer wire netting.

When the rainfall is not large, rainwater falls into the water collecting area 1 through the vegetation planting area 3, purified and filtered by the water quality purifying area 4 and enters the water discharging area 2 from the water outlet 7, the water discharging area 2 directly discharges the purified water after treatment into a river, and as long as the water in the water discharging area 2 submerges the outlet of the water discharging pipe 6, the siphon 5 can generate a siphon phenomenon because the water in the water discharging area 2 flows and the pressure is reduced, so that accumulated water in the water collecting area 1 can be quickly discharged after the siphon is generated, and silt on the one hand, on the other hand, the surface of the purifying filter material can be taken away; when the rainfall is large (the rainwater in the water collecting area 1 is discharged into the drainage area 2 through the siphon 5 and the water outlet 7 at the same time), the rainwater enters the water collecting area 1, the rainwater is discharged into the drainage area 2 through the siphon action of the siphon 5, sludge in the rainwater which is not filtered by the purification filter material can be intercepted by the intercepting mesh enclosure 8 at the outlet of the drainage pipe 6, the rainwater purified and filtered by the water quality purification area 4 enters the drainage area 2 from the water outlet 7, when the accumulated rainfall in the water collecting area 1 is lower than the water level of the siphon action (meanwhile, the water quantity in the drainage area 2 is also lower than the outlet of the drainage pipe 6), the rainwater purified and filtered by the water quality purification area 4 enters the drainage area 2 through the water outlet 7, and the drainage area 2 directly discharges the purified water into a river.

In the existing U-shaped or concave-shaped groove, the water quality purification area and the drainage area are positioned in the same cavity, when rainstorm comes and the rainwater amount is increased rapidly, rainwater is deposited in the water quality purification area and cannot be discharged in time due to insufficient drainage capacity of the drainage pipe of the groove, so that the purification effect of the purification area is lost; according to the groove, the groove body 10 is arranged in a shape like a Chinese character 'shan', the water quality purification area and the drainage area are separated, the working efficiency of the device can be improved while the space is increased, the buffer effect is achieved when the water quantity is increased sharply in heavy rain and heavy rain, and the water storage capacity of the device is enhanced. The vegetation planting area 3 is stretched into the groove, so that the vegetation can be prevented from being damaged by scouring when the water quantity is too large.

It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious variations or modifications which fall within the spirit of the invention are intended to be covered by the scope of the present invention.

Claims

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.