CN205296070U - Water purification type ecological embankment cross flow system - Google Patents

Water purification type ecological embankment cross flow system Download PDF

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Publication number
CN205296070U
CN205296070U CN201521128753.7U CN201521128753U CN205296070U CN 205296070 U CN205296070 U CN 205296070U CN 201521128753 U CN201521128753 U CN 201521128753U CN 205296070 U CN205296070 U CN 205296070U
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layer
flow
water
ecological revetment
reaction tank
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CN201521128753.7U
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谭德远
都丽萍
翟鹏辉
郭宏凯
蔡飞
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Beijing Orient Landscape Ecology Limited-Liability Co
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Beijing Orient Landscape Ecology Limited-Liability Co
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/30Flood prevention; Flood or storm water management, e.g. using flood barriers

Abstract

The utility model relates to a water purification type ecological embankment cross flow system, ecological embankment cross flow system includes along domatic diversion traverse furrow, speed reduction weir, reaction tank, the gabion shore protection that sets gradually to surface of water direction, the side of reaction tank is equipped with the isolation layer, reaction tank top -down sets gradually and plants the layer, adsorbs - nitrify layer, metalling and anaerobism - denitrification layer, be equipped with in the metalling along the discharger of surface of water direction downward sloping. The utility model discloses a water purification type ecological embankment cross flow system is through slowing down the non -point source pollution thing at the domatic through flow velocity in river course, and control non -point source pollution thing is at the water conservancy dwell time of each layer structure of ecological embankment cross flow system, makes non -point source pollution thing nature, orderly outside and row's of permeating, adsorbing, decomposing, change in this system work flow, finally reaches the purpose of non -point source pollution object height effect purification.

Description

A kind of purified water type ecological revetment cross flow system
Technical field
This utility model relates to a kind of ecological revetment cross flow system, particularly relates to a kind of purified water type ecological revetment cross flow system.
Background technology
Quickening along with urbanization process, it is increasing that waterproof gathering ground (such as roofing, hard surface, square, parking lot etc.) occupies ratio, the city surface source pollution thing that rainwater causes eventually enters into urban rivers and lakes water system by rainwash, causes water bodies of rivers and lakes to be subject to pollution in various degree. Therefore, how to control polluter and enter water bodies of rivers and lakes, improve water quality, and prevent soil erosion, it has also become instant task.
The prevention and control of city surface source pollution thing are served extremely important effect by ecological revetment, are last one barriers preventing city surface source pollution thing from entering lake, river system. But the river that enters of area source pollutants is considered less by existing ecological revetment technology, or pollution of area source is had certain retention functions by the shore protection having, but due to the restriction of its material and structure, limited efficiency.
At present, common ecological revetment method includes grass planting bulkhead tech, three dimensional network slope vegetation protection technology, gabion shore protection technology, ecology bag shore protection technology etc. But in reality produces, when these ecological shore protection systems run into the impact of extraneous a large amount of area source pollutants, three below problem often occurs: (1) is when area source pollutants entrance river course is domatic, owing to slope flow is anxious, hydraulic detention time is short, causes that domatic section of dirt is not thoroughly and the problem such as substrate clogging; (2) lake, existing river domatic substrate bed is relatively low to removal efficiency of nitrogen and phosphorus; (3) domatic water and soil conservation ability is weak.
Above three problem all can cause that shore protection system collapses, and a large amount of area source pollutants are directly entered lake, river, affect river and lake water quality.
Utility model content
The problems referred to above that the purpose of this utility model produces when being the impact running into extraneous a large amount of area source pollutants for ecological shore protection system, it is proposed to a kind of purified water type ecological revetment cross flow system, are finally reached the purpose of area source pollutants high-efficient purification
For achieving the above object, this utility model provides a kind of purified water type ecological revetment cross flow system, described ecological revetment cross flow system includes along the domatic diversion traverse furrow set gradually to water surface direction, deceleration weir, reaction tank, gabion shore protection, the side of described reaction tank is provided with sealing coat, described reaction tank sets gradually plantation layer from top to bottom, absorption-nitrated layer, metalling and anaerobism-denitrification layer, described metalling is provided with the discharger sloped downwardly in the direction along the water surface, when the percolate in described anaerobism-denitrification layer is saturated, the percolate overflowed is discharged by described discharger.
Preferably, described deceleration weir is made up of the boulder and cobble of grating.
Preferably, the thickness of described plantation layer is 20cm, plants and be implanted with water plant in described plantation layer.
Preferably, described absorption-nitrated layer is made up of zeolite.
Preferably, the thickness of described metalling is 5��20mm.
Preferably, described anaerobism-denitrification layer is U-shape structure, and being made up of flyash of described anaerobism-denitrification layer.
Preferably, the thickness of described absorption-nitrated layer, metalling, anaerobism-denitrification layer is than for 2:1:1.
Preferably, described sealing coat is geomembrane, and the sealing coat between described reaction tank and described gabion shore protection is than described plantation floor height 1��2cm.
Based on technique scheme, the utility model has the advantages that:
Purified water type ecological revetment cross flow system of the present utility model is by slowing down the through flow velocity that area source pollutants is domatic in river course, Control the Plan Pollution Sources thing is in the water conservancy time of staying of the ecological revetment each Rotating fields of cross flow system, make that area source pollutants is natural in this system, orderly carrying out is permeated, adsorb, decompose, convert and the workflow of outer row, be finally reached the purpose of area source pollutants high-efficient purification.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes the part of the application, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model. In the accompanying drawings:
Fig. 1 is purified water type ecological revetment cross flow system structure schematic diagram;
1��vegetation on the bank; 2��deceleration weir; 3��reaction tank; 4��diversion traverse furrow; 5��absorption-nitrated layer; 6��metalling; 7��anaerobism-denitrification layer; 8��plantation layer; 9��gabion shore protection; 10��sealing coat; 11��discharger; A��water (flow) direction.
Detailed description of the invention
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
This utility model provides a kind of purified water type ecological revetment cross flow system, as it is shown in figure 1, illustrated therein is a kind of preferred implementation of the present utility model.
This ecological revetment cross flow system is mainly made up of diversion traverse furrow 4, deceleration weir 2, reaction tank 3, sealing coat 10, gabion shore protection 9, discharger 11 etc. Each described reaction tank 3 forms by plantation layer 8, absorption-nitrated layer 5, metalling 6, anaerobism-denitrification layer 7. Described plantation layer 8 is made up of according to a certain ratio soil and wormcast, and described absorption-nitrated layer 5 is made up of zeolite; Described metalling 6 is made up of rubble; Described anaerobism-denitrification layer 7 is made up of flyash. In end and the water surface contact portion of this system, traditional gabion bank protection method is adopted to construct.
Specifically, diversion traverse furrow 4 that described ecological revetment cross flow system includes setting gradually to water surface direction along domatic, deceleration weir 2, reaction tank 3, gabion shore protection 9, the side of described reaction tank 3 is provided with sealing coat 10, described reaction tank 3 sets gradually plantation layer 8, absorption-nitrated layer 5, metalling 6 and anaerobism-denitrification layer 7 from top to bottom, described metalling 6 is provided with the discharger 11 sloped downwardly in the direction along the water surface, when the percolate in described anaerobism-denitrification layer 7 is saturated, the percolate overflowed is discharged by described discharger 11.
Domatic in river course diversion traverse furrow 4 is set and the through flow velocity of the area source pollutants flowed out from vegetation 1 on the bank can be slowed down in deceleration weir 2, increase the hydraulic detention time that area source pollutants is domatic in river course, area source pollutants in described diversion traverse furrow 4 can carry out blending horizontal diafiltration under vertically simultaneously, to slow down the appearance dirt capacity in diversion traverse furrow 4, carry out, at this ecological revetment cross flow system order, offer essential condition of evolving for area source pollutants.
Owing to there is water-head between deceleration weir 2 and the ordinary water level in river course, current will by the horizontal diafiltration in deceleration weir 2 to described reaction tank 3, in Fig. 1 shown in water (flow) direction A. Described deceleration weir 2 is made up of the boulder and cobble of different gradation, and after diafiltration a period of time, boulder and cobble surface is easily formed biomembrane, at area source pollutants through the horizontal diafiltration in described deceleration weir 2, pollutant has preliminary removal effect.
Preferably, the thickness of described plantation layer 8 is 20cm, is positioned at described absorption-nitrated layer 5 top, by local soil and wormcast according to volume ratio 1:(12��20) mix after, planting aquatic plants, water plant selects the sociales of local well developed root system.
After wormcast and local soil are mixed according to a certain percentage, primarily serve the following stated effect: (1) can increase the quantity of soil porosity and aggregate, improve Soil structure, there is good aeration, water penetration and high water holding capacity, slow down river course slope surface runoff. (2) not only rich in substantial amounts of organic matter, nitrogen, phosphorus, potassium and humic acid etc. in wormcast, also rich in the necessary 16 kinds of nutrients of plant growing and the phytohormone with stimulation plant growing, the growth of plant and the quality of raising crop are had and obviously acts on. (3) wormcast has very big specific surface area, become the attachment carrier of many microorganisms, containing a large amount of multiple-microorganism group such as substantial amounts of antibacterial, Ammonifying bacteria, nitrobacteria, fungus in wormcast, and reproduction speed is doubled and redoubled, become the decomposition center of soil, make the organic nitrogen in area source pollutants through preliminary decomposition and conversion. (4) carbohydrate of generation is transported to plant rhizosphere by photosynthesis by the water plant planting layer, provides carbon source for the microorganism in absorption-nitrated layer 5, thus maintaining the microbial activity that rhizosphere is vigorous. (5) wetland plant is by the tissue conveying oxygen of hollow to root system, provides aerobic environment for the absorption in this system-nitrated layer 5. (6) water plant planting layer can absorb the nitrogen in sewage, reaches the purpose denitrogenated.
Absorption-nitrated layer 5 is made up of zeolite, zeolitic material be one can unlimited absorption ammoniacal nitrogen, be not susceptible to again the new material of saturated phenomenon. Ammonium nitrogen is had extremely strong Selective adsorption by zeolite, can ammonium nitrogen in quick adsorption sewage, but be not intended as the final approach that ammoniacal nitrogen is removed. Owing to zeolite has huge specific surface area, it it is a kind of desirably microbe carrier. Ammoniacal nitrogen and nitrobacteria that zeolite adsorbs in a large number coexist, and make the ammoniacal nitrogen of zeolite adsorption be easy to be converted into nitrate nitrogen.
Preferably, described absorption-nitrated layer 5 is layer structure. The thickness of described metalling 6 is 5��20mm, also layer structure, is positioned at the lower section of described absorption-nitrated layer 5. The nitrate nitrogen that area source pollutants is formed through a series of biochemical reactions of plantation layer 8 and absorption-nitrated layer 5, through the described rapid leaching of metalling 6 to anaerobism-denitrification layer 7.
Preferably, described anaerobism-denitrification layer 7 is U-shape structure, and being made up of flyash of described anaerobism-denitrification layer 7. The material of described anaerobism-denitrification layer 7 is made up of flyash, and flyash has huge specific surface area, it is possible to provide substantial amounts of attachment site for microorganism. Described anaerobism-denitrification layer 7 is U-shape structure, is positioned at the lower section of described metalling 6, oozes and collect at anaerobism-denitrification layer 6 under being conducive to the rainwater percolate with nitrate ion quickly.
More preferably, described absorption-nitrated layer 5, metalling 6, anaerobism-denitrification layer 7 thickness than for 2:1:1, and according to on-the-spot Runoff situation, determine the cumulative volume of this ecological revetment cleaning system according to aforementioned proportion, so that aforementioned proportion is adopted to enable to the realizes maximal efficiency of each layer.
In this purified water type ecological revetment cross flow system, one layer of geomembrane is all laid in described reaction tank 3 side, and the sealing coat 10 1��2cm higher than described plantation layer 8 between described reaction tank 3 and described gabion shore protection 9, it is ensured that area source pollutants carries out biochemical reaction in order in described reaction tank 3. Described discharger 11 is positioned at described metalling 6, it is perpendicular to direction, river and slopes downwardly in the direction setting along the water surface, when the percolate in described anaerobism-denitrification layer 7 is saturated, by described discharger 11, the percolate overflowed can be discharged by self gravitation effect, it is ensured that whole system continues normally rhythmical to carry out permeating, adsorb, decompose, convert and the workflow of outer row. Meanwhile, the end of ecological revetment cross flow system of the present utility model adopts conventional gabion shore protection 9 to build, as shown in Figure 1.
The cardinal principle that this utility model technique scheme realizes is as follows:
Owing to plantation layer is carbon source and the aerobic environment that absorption-nitrated layer provides abundance, therefore absorption-nitrated layer it is easily formed Ammonifying bacteria and microbiologic population that nitrobacteria is taken as the leading factor, and reproduction speed is fast, is most important biochemical reaction center in described ecological revetment cross flow system. When area source pollutants enters this ecological revetment cross flow system, the ammoniacal nitrogen in sewage can quickly be adsorbed-nitrated layer absorption and fixing, it is converted into nitrate nitrogen (NO by nitrobacteria subsequently3-N). Organic nitrogen first passes around Ammonifying bacteria and is converted into ammoniacal nitrogen (NH4 +-N) after fixed by zeolite, be again converted into nitrate nitrogen (NO by nitrobacteria subsequently3-N). Nitrate nitrogen does not participate in any reaction in this stage, along with buffering adsorption layer and leached layer are directly entered denitrification layer.
Owing in anaerobism-denitrification layer, dissolved oxygen concentration is extremely low, flyash is that anaerobic type microorganism provides abundant attachment site, therefore anaerobism-denitrification layer is easily formed the microbiologic population taken as the leading factor with denitrifying bacteria, the nitrate nitrogen that leaching gets off is converted into nitrogen under the effect of denitrifying bacteria, reaches the purpose denitrogenated.
Purified water type ecological revetment cross flow system of the present utility model is by slowing down the through flow velocity that area source pollutants is domatic in river course, Control the Plan Pollution Sources thing is in the water conservancy time of staying of the ecological revetment each Rotating fields of cross flow system, make that area source pollutants is natural in this system, orderly carrying out is permeated, adsorb, decompose, convert and the workflow of outer row, be finally reached the purpose of area source pollutants high-efficient purification.
Finally should be noted that: above example is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although this utility model being described in detail with reference to preferred embodiment, those of ordinary skill in the field are it is understood that still can modify to detailed description of the invention of the present utility model or portion of techniques feature carries out equivalent replacement; Without deviating from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that this utility model is claimed.

Claims (8)

1. a purified water type ecological revetment cross flow system, it is characterized in that: described ecological revetment cross flow system includes along the domatic diversion traverse furrow (4) set gradually to water surface direction, deceleration weir (2), reaction tank (3), gabion shore protection (9), the side of described reaction tank (3) is provided with sealing coat (10), described reaction tank (3) sets gradually plantation layer (8) from top to bottom, absorption-nitrated layer (5), metalling (6) and anaerobism-denitrification layer (7), described metalling (6) is provided with the discharger (11) sloped downwardly in the direction along the water surface, when the percolate in described anaerobism-denitrification layer (7) is saturated, the percolate overflowed is discharged by described discharger (11).
2. ecological revetment cross flow system according to claim 1, it is characterised in that: described deceleration weir (2) is made up of the boulder and cobble of grating.
3. ecological revetment cross flow system according to claim 1, it is characterised in that: the thickness of described plantation layer (8) is 20cm, plants and be implanted with water plant in described plantation layer (8).
4. ecological revetment cross flow system according to claim 1, it is characterised in that: described absorption-nitrated layer (5) is made up of zeolite.
5. ecological revetment cross flow system according to claim 1, it is characterised in that: the thickness of described metalling (6) is 5��20mm.
6. ecological revetment cross flow system according to claim 1, it is characterised in that: described anaerobism-denitrification layer (7) is U-shape structure, and being made up of flyash of described anaerobism-denitrification layer (7).
7. ecological revetment cross flow system according to claim 1, it is characterised in that: the thickness of described absorption-nitrated layer (5), metalling (6), anaerobism-denitrification layer (7) is than for 2:1:1.
8. ecological revetment cross flow system according to claim 1, it is characterized in that: described sealing coat (10) is geomembrane, and sealing coat (10) 1��2cm higher than described plantation layer (8) between described reaction tank (3) and described gabion shore protection (9).
CN201521128753.7U 2015-12-30 2015-12-30 Water purification type ecological embankment cross flow system Active CN205296070U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105544461A (en) * 2015-12-30 2016-05-04 北京东方园林生态股份有限公司 Water purification type ecological bank protection overflow system
CN111410365A (en) * 2020-04-01 2020-07-14 中国科学院生态环境研究中心 Sanitary drainage and pollution treatment method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105544461A (en) * 2015-12-30 2016-05-04 北京东方园林生态股份有限公司 Water purification type ecological bank protection overflow system
CN111410365A (en) * 2020-04-01 2020-07-14 中国科学院生态环境研究中心 Sanitary drainage and pollution treatment method

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