CN106745692A - A kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification - Google Patents

A kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification Download PDF

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Publication number
CN106745692A
CN106745692A CN201710056426.2A CN201710056426A CN106745692A CN 106745692 A CN106745692 A CN 106745692A CN 201710056426 A CN201710056426 A CN 201710056426A CN 106745692 A CN106745692 A CN 106745692A
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China
Prior art keywords
collecting tank
slope
strengthens
baffle plate
washes away
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Pending
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CN201710056426.2A
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Chinese (zh)
Inventor
张福超
王晓玲
郑晓通
李建生
李松敏
吕鹏
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Tianjin University
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Tianjin University
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Priority to CN201710056426.2A priority Critical patent/CN106745692A/en
Publication of CN106745692A publication Critical patent/CN106745692A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/10Packings; Fillings; Grids
    • C02F3/109Characterized by the shape
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/301Aerobic and anaerobic treatment in the same reactor
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/308Biological phosphorus removal
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/001Runoff or storm water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/22O2
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/02Fluid flow conditions
    • C02F2301/026Spiral, helicoidal, radial
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/24Separation of coarse particles, e.g. by using sieves or screens
    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention discloses the ecological canal system that a kind of anti-rainfall runoff washes away and strengthen pollutant purification, including the collecting tank for collecting solid pollution composition granule, base slope, side slope, aerator and biologic packing material baffle plate, collecting tank is set to forge piece of step type structure, for preventing pollutant in collecting tank with the longitudinal flow of current, collecting tank is made up of bottom and side wall, the both sides of collecting tank are connected with the base slope and side slope successively from top to bottom, the gradient of base slope is 0.1 0.5, and planting submerged plant is planted on base slope;The gradient of side slope is 0.7 0.9, is planted on side slope and is implanted with emergent aquactic plant;Aerator is made up of the aeration tube and aerodynamic system being connected with each other, aeration tube is arranged on the bottom center of collecting tank at equal intervals, aerodynamic system is arranged on the bottom of collecting tank, the both sides of each aeration tube are provided with the connecting pole for fixing the biologic packing material baffle plate, and biologic packing material baffle plate plays a part of biological cleaning and stops current.

Description

A kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification
Technical field
It is to be related to collection fortification of plants, biology specifically the invention belongs to widespread pollution from the overuse of fertilizers and pesticides in rural area control field of engineering technology Purification and anti-rainfall runoff wash away, reduce the loss of solid contaminant particle and reduce a kind of raw of Sediments nitrogen phosphorus release State sewerage.
Background technology
Non-point pollution is one of environmental problem of whole world generally existing, compared with point-source pollution, with being difficult to monitor With control, endanger sweeping feature.Into 20th century, non-point pollution increasingly becomes the key factor of water pollution, agriculture The research of industry non-point pollution is gradually active, as focus.Research work of the external many scholars to body eutrophication is carried out It is a lot of.EPA's investigation result of 2003 shows, agricultural nonpoint source pollution is the first big of its river and lake pollution Pollution sources, about 40% river, water body in lake water quality are unqualified, be also cause underground water pollution and wetlands degradation it is main because Element.In European countries, widespread pollution from the overuse of fertilizers and pesticides in rural area is equally the primary source for causing water body, particularly groundwater azotate pollution, It is the main reason for causing phosphorus enrichment in surface water, the phosphorus discharged by agricultural area source is the 24%- of surface water pollution total load 71%.20 century 70s, it is external that substantial amounts of research has been carried out to control non-point pollution, and a whole set of measure is formd, including The detection means of pollutant, produce rule, integrated management and control program etc..Since the eighties, agricultural chemicals consumption is higher European Union member countries' nitrogen, phosphatization fertilizer consumption have dropped about 30% and 50% respectively.Once extremely serious groundwater azotate is dirty Be infected with and alleviated, lake and coastal waters domain body eutrophication also improve to a certain extent.
Research of the China to agricultural nonpoint source pollution originates in the eighties in 20th century, with the fast development of agricultural economy, In the relative developed regions of many areas of China, especially agricultural, generally existing excessively applies chemical fertilizer, uses high poison persistent pesticide And agricultural drain directly enters the phenomenons such as river, this series of factors causes agricultural nonpoint source pollution increasingly serious, to Water quality Important threat is produced with farmland ecosystem bio-diversity.China is chemical fertilizer and Pesticide use state maximum in the world, single The average annual fertilizer amount in position arable land is 4 times of the U.S., the upper safety limit that the average fertilizing standards of chemical fertilizer are set well beyond developed country, Fertilizer is lost in seriously after rainfall and irrigation and drainage, and the runoff containing a large amount of nitrogen phosphorus nutrients and high poison persistent pesticide is directly discharged into Irrigation canals and ditches, river course or lake, cause the excessive multiplication of some algae, cause the mortality of other aquatic animals and plants, and organism is rotten Water body can further be deteriorated again after rotten, the life and ecological environment for giving people bring great risk.
Agricultural nonpoint source pollution and its control measure research are gradually subject to attention both domestic and external, on agricultural nonpoint source pollution The Ecological Control aspect of thing, mainly there is ecological agriculture construction, wetland, plant buffer strip, irrigation canals and ditches ecological intercepting etc..Controlled in numerous In reason method, ecological canal has nitrogen higher, phosphorus and organic matter removal effect and preferable landscape effect.Ecological canal is Referring to has one fixed width and depth, by water, soil and biotic component, with itself unique texture and play corresponding ecological functions The farmland ditch ecosystem, also referred to as farmland ditch wetlands ecosystems.Agriculture drainage ditch is used as Agro-ecological System Important component, is both the initial convergence ground of agricultural nonpoint source pollution thing, is also the weight of the nutrient salt in water such as river, lake Want input source.
Research currently for ecological canal is mostly sewerage implants, the screening of filler and to irrigation canals and ditches main body shape The design of columnar structure, reinforcement of the ecological canal to agricultural drain clean-up effect is realized with this, reduces widespread pollution from the overuse of fertilizers and pesticides in rural area.Grind Study carefully and show, the loss that runoff during rainfall and after rainfall washes away caused particulate form pollutant materially increases agriculture Field draining, to including the pollution in water body (river, lake), is the key factor that agricultural nonpoint source pollution is formed.Meanwhile, there is research Show, increasing the oxygen content in water body can simultaneously strengthen the pollutant absorption and purification and the purification of reinforcement filler of root system of plant Effect.Additionally, according to relevant research, irrigation canals and ditches bed mud is equally the important next of discharge water pollution to the nitrogen phosphorus that overlying water discharges Source, meanwhile, dissolved oxygen content is relevant in the nitrogen phosphorus burst size rainwater body of Sediments, increases with the reduction of dissolved oxygen.
The content of the invention
The invention aims to overcome deficiency of the prior art, there is provided a kind of anti-rainfall runoff washes away and strengthen dirt The ecological canal system of dye thing purification, the presence of aerator can increase oxygen content of water in the ecosystem of the present invention, oxygen-containing The increase of amount can strengthen absorption and transformation of the root system of plant to pollutants such as water body nitrogen, phosphorus, strengthen ecological canal plant Clean-up effect, the increase of oxygen content also can provide good aerobic environment for biological in water body, strengthen its aerobic clean-up effect. Meanwhile, aerator acts synergistically with biologic packing material baffle plate, current is flowed in the shape of a spiral, strengthens to solid pollution composition granule Removal, it is periodically artificial afterwards to remove collecting tank drift, greatly reduce the particulate form pollution being lost in because rainfall runoff washes away Thing is to entering the pollution in water body (river, lake).Finally, aerator increases Dissolved Oxygen in Water content, makes the nitrogen phosphorus of bed mud Release reduces, so as to further strengthen regulation effect of the ecological canal to widespread pollution from the overuse of fertilizers and pesticides in rural area.Therefore, the life that the present invention is constructed State sewerage can have significantly more efficient regulation effect to widespread pollution from the overuse of fertilizers and pesticides in rural area.
The purpose of the present invention is achieved through the following technical solutions:
A kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification, including for collecting solid pollution The collecting tank of composition granule, base slope, side slope, aerator and biologic packing material baffle plate, the collecting tank are set to forge piece of step type structure, use In the longitudinal flow of pollutant in collecting tank with current is prevented, collecting tank is made up of bottom and side wall, the side wall and bottom water Plane is in 60 ° of angles;The both sides of the collecting tank are connected with the base slope and side slope successively from top to bottom, the slope of the base slope It is 0.1-0.5 to spend, and base slope is built into by plant building block, and the plant building block is made up of rectangle hollow brick, on the rectangle hollow brick It is provided with the diamond shaped openings for kind of planting submerged plant;The gradient of the side slope is 0.7-0.9, is planted on side slope and is implanted with emergent aquactic plant; The aerator is made up of the aeration tube and aerodynamic system being connected with each other, and the aeration tube is arranged on collection at equal intervals The bottom center of groove, the aerodynamic system is arranged on the bottom of collecting tank, and the both sides of each aeration tube are provided with for fixing The connecting pole of the biologic packing material baffle plate, the biologic packing material baffle plate is made up of the plate-like fillers by bio-film colonization, plays life Thing purifies and stops the effect of current, and the side of each biologic packing material baffle plate is equipped with least two for inserting the connecting pole Jack.
The collecting tank is concrete structure, and the bottom width of collecting tank is 0.3-0.5m.
The aeration tube is made up of the plastic tube for being covered with 2-3mm holes.
The connecting pole is made up of the steel bar column of a diameter of 0.01m, and the connecting pole is fixed at the base angle of collecting tank.
A diameter of 0.015m of the jack.
The side slope is sun-dried mud brick.
The size of the rectangle hollow brick is 0.10 × 0.15m.
The size of the biologic packing material baffle plate is 0.30 × 0.50m.
Compared with prior art, the beneficial effect that technical scheme is brought is:
(1) presence of aerator increased oxygen content of water, strengthen the clean-up effect of water plant and microorganism; (2) aerator produces spiral flow with biologic packing material baffle plate synergy, solid contaminant particle is comparatively fast settled and is collected, Removal;(3) increase of dissolved oxygen makes Sediments reduce to the nitrogen phosphorus burst size of overlying water in water body.(4) built by plant The base slope that block is built into can play interception and the clean-up effect of submerged plant, and silt containing pollutant can be easily made again to collecting tank Slip, while help to reduce substrate sludge nitrogen phosphorus discharge, and it is convenient to clean and maintenance, prevents from assembling compared with high concentration of sediment on base slope Influence irrigation canals and ditches clean-up effect;(5) solid contaminant in collecting tank facilitates regular artificial removal, enables irrigation canals and ditches continuous service;(6) This ecological canal system need not have professional knowledge personal management high, and operation is simple, convenient management, operational management low cost, It is easy to promote;(7) collecting tank is forge piece of step type structure, can effectively reduce pollutant reserving along collecting tank longitudinal direction;(8) biologic packing material Baffle plate is freely connected with connecting pole, conveniently retracts, and is capable of achieving the periodic maintenance to biologic packing material baffle plate, protects biological cleaning effect Hold in level higher;(9) emergent aquactic plant of side slope can not only play a part of to intercept particulate pollutant and purifying water body, while Also there is landscape effect.
Brief description of the drawings
Fig. 1 is the cross-sectional view of ecological canal system of the present invention.
Fig. 2 is the structural representation of the collecting tank of forge piece of step type structure.
Fig. 3-1 and Fig. 3-2 is respectively the structural representation of biologic packing material baffle plate and plant building block.
Fig. 4 is the structural representation of aerator.
Fig. 5 is solid pollutant particle collection process schematic diagram.
Fig. 6 is water body along irrigation canals and ditches (side) nowed forming schematic diagram.
In figure:1- side slopes, 2- emergent aquactic plants, 3- plant building blocks, 4- base slopes, 5- aerodynamic systems, 6- aeration tubes, 7- lifes Thing filler baffle plate, 8- connecting poles, 9- collecting tanks
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings:
A kind of anti-rainfall runoff of present invention protection washes away and strengthens the ecological canal system of pollutant purification, as shown in figure 1, Specific implementation process is as follows:
First it is the system implants building block of this ecological canal and the making of biologic packing material baffle plate:Plant building block 3 is designed and produced, As shown in figure 3-2, plant building block 3 is rectangle hollow brick structure, and size is about 0.10 × 0.15m, there is a water chestnut on rectangle hollow brick On the one hand shape perforate, inside can intercept bottom equipped with the soil for being adapted to plant growth, tapping kind planting submerged plant, submerged plant Portion's soil particle, on the other hand can absorb, purifying water body pollutant.
Biologic packing material baffle plate 7 is designed and produced, as shown in figure 3-1, the size of biologic packing material baffle plate 7 is about 0.30 × 0.50m, it is first First filler baffle plate side is punched, aperture is about 0.015m, carry out microorganism colonization to it afterwards, bio-film colonization is that handle is attached with It is biological culture that the filler of microbial nutrition matrix is carried out under suitable environment, and forming one layer has the micro- of biological cleaning effect Biofilm.It is afterwards the structure of irrigation canals and ditches, 2-3 meters of overall irrigation canals and ditches width.
The side slope 1 of left and right is constructed, side slope 1 is slight slope, and the gradient is 0.7-0.9, and emergent aquactic plant 2 is planted on side slope;Very water is planted Thing 2 can carry out good photosynthesis and discharge oxygen, increase oxygen content of water absorption, purifying water body pollutant simultaneously.Meanwhile, Emergent aquactic plant 2 on side slope 1 has larger cauline leaf, can play interception function, quilt to the solid contaminant of ecological canal both sides In plant surface, another part is deposited to trench bottom for the solid particle part absorption of interception.Base slope 4 is constructed, base slope 4 is by planting Thing building block 3 is built into, and the gradient is 0.1-0.5.
Aerator is set, aerator as shown in figure 4, aerodynamic system 5 is located underground, in irrigation canals and ditches collecting tank center Aeration tube is set at interval of a segment distance, aeration tube 6 is located in the water body of irrigation canals and ditches inside during work, and it is less than mean lowest water level. Aeration tube is linked with bottom air dynamical system, and wherein aeration tube 6 is the plastic tube for being covered with pore, when running air force system System enters in aeration tube 6 air compression, and tiny aperture sprays in air bubble-shaped from aeration tube, and the bubble that aeration tube is produced is Can increase the oxygen content of water body, the increase of oxygen content can strengthen root system of plant to the absorption of the pollutants such as water body nitrogen, phosphorus with Transformation, strengthens ecological canal plant purification effect, and the increase of oxygen content also can provide good oxygen for biological in water body Environment, promotes biological aerobic clean-up effect, meanwhile, the increase of dissolved oxygen makes nitrogen of the Sediments to overlying water in water body Phosphorus burst size reduces;Additionally, aerator can make current produce lateral flow.
Collecting tank 9 is constructed, collecting tank 9 is cement concrete constructions, and side wall is in 60 degree of angles, collecting tank with bottom water plane Bottom is a width of 0.3-0.5 meters, is forge piece of step type structure along irrigation canals and ditches collecting tank elevated by one step spaced apart;As shown in Figure 2. Collecting tank 9 mainly plays a part of to collect solid pollution composition granule, and being designed as step type can effectively prevent pollutant in collecting tank With the longitudinal flow of current, the solid contaminant collected in collecting tank 9 need at regular intervals carry out artificial removal, prevent silt Fill up collecting tank 9.
Biologic packing material baffle plate 7 is set, the connecting pole 8 of 0.01 meter or so of diameter is fixed at the base angle of collecting tank 9 first, this Connecting pole 8 is steel bar column in embodiment, and biologic packing material baffle plate 7 is inserted in into connecting pole 8 respectively afterwards.Thing filler baffle plate 7 is arranged on Each both sides of aeration tube 6, height is about the half of the depth of water.Each side of thing filler baffle plate 7 is equipped with two diameters, 0.015 meter of left side Right jack, jack is inserted into two connecting poles 8 fixed with trench bottom, and connecting pole 8 plays fixed biologic packing material baffle plate 7 Effect.The effect of biologic packing material baffle plate 7 mainly has two:One is that microorganism thereon plays a part of biological cleaning, and baffle plate sets Put in aeration tube both sides, the oxygen content in water body is higher, therefore can give full play to biological cleaning effect.Two is to play stop current Effect, aeration tube spray minute bubbles make current produce lateral flow, when flowing water body run into baffle plate when, parcel can be produced The eddy flow (as shown in Figure 5) of biologic packing material baffle plate 7, makes current flow (as shown in Figure 6) in the shape of a spiral along irrigation canals and ditches, and spiral flow makes The solid contaminant particle obtained in water body is constantly flushed to base slope and slips into collecting tank.
In certain rainfall agricultural drain, aerator is opened, under aerator and biologic packing material baffle plate synergy, Current are flowed in the shape of a spiral, and solid contaminant particle is flushed at base slope by eddy flow in water body, and a part is intercepted by base slope, a part Slip into collecting tank.Surface portion solid pollutant produces longitudinal flow in collecting tank, is intercepted at ladder, in this way, water body In solid pollution composition granule be constantly collected in collecting tank.After this time rainfall or multiple rainfall draining, manually to collecting Pollutant is removed in groove.Meanwhile, the emergent aquactic plant of side slope plays and the interception of two avris current solid pollution composition granules is made With side slope emergent aquactic plant occurs plant absorption and catharsis with base slope submerged plant, and biologic packing material baffle plate occurs biological aerobic Catharsis.
In conventional irrigation canals and ditches retaining, draining, aerator is opened for a period of time, increase oxygen content of water, can effectively improve The clean-up effect of water plant, and the microorganism on biologic packing material baffle plate is carried out aerobic purification.Aerator is closed, at one section Between after, water body oxygen content is reduced, and microorganism occurs anaerobism and anoxic purification, the removal of so achievable water body organism and simultaneously Denitrogenation dephosphorizing.
The present invention is not limited to embodiments described above.Description to specific embodiment above is intended to describe and says Bright technical scheme, above-mentioned specific embodiment is only schematical, is not restricted.This is not being departed from In the case of invention objective and scope of the claimed protection, one of ordinary skill in the art may be used also under enlightenment of the invention The specific conversion of many forms is made, these are belonged within protection scope of the present invention.

Claims (8)

1. a kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification, it is characterised in that including for receiving Collect collecting tank, base slope, side slope, aerator and the biologic packing material baffle plate of solid pollution composition granule, the collecting tank is set to rank Trapezoidal-structure, for preventing pollutant in collecting tank with the longitudinal flow of current, collecting tank is made up of bottom and side wall, the side Wall is in 60 ° of angles with bottom water plane;The both sides of the collecting tank are connected with the base slope and side slope successively from top to bottom, institute The gradient of base slope is stated for 0.1-0.5, base slope is built into by plant building block, and the plant building block is made up of rectangle hollow brick, the square The diamond shaped openings for kind of planting submerged plant are provided with shape hollow brick;The gradient of the side slope is 0.7-0.9, is planted on side slope and is implanted with Emergent aquactic plant;The aerator is made up of the aeration tube and aerodynamic system being connected with each other, and the aeration tube is equidistant The bottom center of collecting tank is arranged on, the aerodynamic system is arranged on the bottom of collecting tank, and the both sides of each aeration tube set There is the connecting pole for fixing the biologic packing material baffle plate, the biologic packing material baffle plate is by the plate-like fillers group by bio-film colonization Into, to play a part of biological cleaning and stop current, the side of each biologic packing material baffle plate is equipped with least two for inserting The jack of the connecting pole.
2. a kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification according to claim 1, and it is special Levy and be, the collecting tank is concrete structure, and the bottom width of collecting tank is 0.3-0.5m.
3. a kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification according to claim 1, and it is special Levy and be, the aeration tube is made up of the plastic tube for being covered with 2-3mm holes.
4. a kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification according to claim 1, and it is special Levy and be, the connecting pole is made up of the steel bar column of a diameter of 0.01m, the connecting pole is fixed at the base angle of collecting tank.
5. a kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification according to claim 1, and it is special Levy and be, a diameter of 0.015m of the jack.
6. a kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification according to claim 1, and it is special Levy and be, the size of the rectangle hollow brick is 0.10 × 0.15m.
7. a kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification according to claim 1, and it is special Levy and be, the size of the biologic packing material baffle plate is 0.30 × 0.50m.
8. a kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification according to claim 1, and it is special Levy and be, the side slope is sun-dried mud brick.
CN201710056426.2A 2017-01-25 2017-01-25 A kind of anti-rainfall runoff washes away and strengthens the ecological canal system of pollutant purification Pending CN106745692A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020114039A1 (en) * 2018-12-04 2020-06-11 浙江大学 System and method for intercepting nitrogen and phosphorus in countryside landscape type ecological ditch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020114039A1 (en) * 2018-12-04 2020-06-11 浙江大学 System and method for intercepting nitrogen and phosphorus in countryside landscape type ecological ditch

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