CN106968228A - Environmental open drain and its construction method based on straw resource utilization - Google Patents
Environmental open drain and its construction method based on straw resource utilization Download PDFInfo
- Publication number
- CN106968228A CN106968228A CN201710352777.8A CN201710352777A CN106968228A CN 106968228 A CN106968228 A CN 106968228A CN 201710352777 A CN201710352777 A CN 201710352777A CN 106968228 A CN106968228 A CN 106968228A
- Authority
- CN
- China
- Prior art keywords
- bright
- open drain
- trench floor
- ditches
- female bayonet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
- E02B11/005—Drainage conduits
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Botany (AREA)
- Cultivation Of Plants (AREA)
Abstract
A kind of environmental open drain based on straw resource utilization of environmental protection technical field, including bright trench floor and bright ditch side plate, wherein:Bright trench floor is provided with implantation hole, is provided with symmetrical first female bayonet along both sides side slope, overall is in I-shaped, three pieces of V-shaped arrangements of its implantation hole of bright trench floor of continuous laying;Bright ditch side plate is being provided with axisymmetric second female bayonet with the bottom of bright trench floor joint;Bright trench floor and bright ditch side plate are shifted to install, and pass through the first female bayonet and the engaging interlaced with each other of the second female bayonet;Described bright trench floor and bright ditch side plate are Ecotype Concrete plate;Contain stalk bar segment in described Ecotype Concrete plate, its raw material, described stalk bar segment forms loose structure through natural degradation on Ecotype Concrete plate.The present invention solves the problem of agricultural crop straw lacks effective treatment measures, and the interception for carrying out pollutant using the loose structure formed after straw degradative is settled, and improves the purification of water quality ability of irrigation canals and ditches.
Description
Technical field
The present invention relates to a kind of technology of field of environment protection, specifically a kind of ecology based on straw resource utilization
Type open drain and its construction method.
Background technology
The situation is tense for China's agricultural non-point source pollution, and water body, soil are deeply hurt.Its occur with migration randomness, it is many because
The features such as intercrossing of son, causes Treatment process to face problem.Common agricultural non-point source pollution is mainly derived from chemical fertilizer, agricultural chemicals, poultry
Poultry manure and production and living sewage and rubbish etc., they pass through the way such as agricultural surface runoff, agricultural drain and underground water seepage
Footpath enters water body and Zinc fractions pollution of area source.As large agricultural country, China's stalk resource enriches very much, is once widely used in life
Fuel living, fertilizer, feed etc., but with the raising of life in the countryside level, energy resource structure changes, and stalk is no longer by effective profit
With but direct returning to farmland, random heap abandon, on-site incineration etc., on the one hand cause soil hardening, fertility to decline, while bringing serious
The environmental problems such as atmosphere pollution.Therefore, agricultural crop straw turns into a kind of new agricultural non-point source pollution factor.
With the aggravation of agricultural runoff pollution problem, farmland ditch is increasingly paid close attention to by scholar.It experienced by tradition
Ecological canal of the Earthen ditches to three face light concrete irrigation canals and ditches again by now development course.Wherein, its shortcoming of Earthen ditches
It is not to be durable, easily silts up, the problems such as weeds easily attack farmland, three face light concrete irrigation canals and ditches ecological effects and landscape effect is poor,
And ecological canal is then thought that original drain function can be kept by scholar, and the energy of the pollutants such as retention purification nitrogen, phosphorus can be strengthened
Power, while also having landscape effect concurrently.Current ecological canal all has a distinct increment in function and landscape, but there is structure shape
State is unstable, function sustainability is poor, the shortcomings of construction cost is high, maintenance management cost is high.
The content of the invention
The present invention is directed to deficiencies of the prior art, it is proposed that a kind of environmental row based on straw resource utilization
The bright ditch of water and its construction method, can effectively alleviate the agricultural non-point source pollution based on stalk and runoff.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of environmental open drain based on straw resource utilization, including:It is laid on trench bottom
Bright trench floor and relatively bright trench floor with implantation hole are obliquely installed in the bright ditch side plate in irrigation canals and ditches side slope, wherein:Bright bottom of trench
Plate is provided with symmetrical first female bayonet along both sides side slope, and bright ditch side plate is being provided with axial symmetry with the bottom of bright trench floor joint
The second female bayonet;Bright trench floor and bright ditch side plate shift to install and by the first female bayonet and the second female bayonet each other
Staggeredly engage.
Described bright trench floor and bright ditch side plate are Ecotype Concrete plate;
Contain stalk bar segment in the raw material of described Ecotype Concrete plate, described stalk bar segment is through natural degradation in life
Loose structure is formed on state type concrete slab.
The weight of raw material is in described Ecotype Concrete plate:0.1-0.2 parts of stalk, 1 part of cement, sand 2.5-
4 parts, 0.3-0.4 parts of water.
Described stalk bar segment length 3-5cm, debris is removed through natural wind dry doubling.
Any one in mullet grass, canna, reed, Scirpus tabernaemontani or its combination are planted in described implantation hole.
First female bayonet of described implantation hole certain side on bright trench floor, its area is that bright trench floor half range has
Imitate the 1/3-1/2 of area.
Preferably, described implantation hole axial symmetry is set, the V-shaped row of implantation hole on three pieces of bright trench floors of continuous laying
Cloth.
Described bright ditch side plate uses wharf's pavement quality in bottom to the water surface, can be effectively increased specific surface area, promotes microorganism
Growth, advantageously forms biomembrane and preferably purifies water.
The present invention relates to a kind of construction method of environmental open drain, comprise the following steps:
S1, smooth irrigation canals and ditches:On the basis of nature is kept, clear list processing is carried out to original trench bottom and side slope;
Then it is levelling in trench bottom paving blotter, while setting sump in agricultural drain mouthful and irrigation canals and ditches junction, and catchmenting
The water side of well sets effluent weir;
S2, put plate and reinforcing:Bright trench floor is sequentially placed into levelling trench bottom, it is ensured that two pieces of adjacent bright trench floors
Side slope of its implantation hole respectively close to both sides;Then along side slope angle, two blocks of bright ditch side plates are placed in the first female bayonet, it is bright
Second female bayonet of ditch side plate blocks two pieces of bright trench floors;Tamp side slope soil afterwards, and beared down on one reinforcing using rubble, it is ensured that
Irrigation canals and ditches stability;
S3, planting aquatic plants:Mullet grass, canna, reed, Scirpus tabernaemontani are planted in the implantation hole arranged in continuous V-arrangement
In any one or its combine water plant;
S4, set and intercept dam:Set in environmental open drain end and intercept dam, keep water level in irrigation canals and ditches, ensure plant
Growth.Technique effect
Compared with prior art, the present invention has the advantages that:
1) realizing the recycling of agricultural crop straw, there is provided the effective means of processing agricultural crop straw pollution;
2) the water plant planting area set in continuous V-arrangement can effectively slow down flow velocity, improve pollutant intercepting efficiency and
Removal efficiency;And the loose structure that the environmental bright trench floor and bright ditch side plate based on stalk are formed after straw degradative also can
Effectively intercept and sedimentation pollutant is there is provided the nutriment of plant growth, be easy to microorganism to grow, improve purification of water quality ability, together
When can avoid using soil erosion caused by common circular hole side plate in the prior art, the use longevity of the environmental irrigation canals and ditches of extension
Life;
3) the bright ditch side plate of wharf's pavement quality can increase specific surface area, promote microorganism growth, be easy to biofilm, can be further
The polluter such as nitrogen, phosphorus, builds the good ditch wetland ecosystem in effectively catching, removal agricultural run-off, recovers irrigation canals and ditches life
Thing diversity.
Brief description of the drawings
Fig. 1 is bright trench floor and its mounting structure schematic diagram in the present invention;
Fig. 2 is partial enlargement structure chart in Fig. 1;
Fig. 3 is bright ditch side plate front view in the present invention;
Fig. 4 is bright ditch side plate side view in the present invention;
In figure:Bright trench floor 1, bright ditch side plate 2, implantation hole 3, the first female bayonet 4, the second female bayonet 5, hole 6.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
Embodiment 1
As shown in figures 1 and 3, the present embodiment is related to a kind of environmental open drain based on straw resource utilization, including
The bright trench floor 1 and relatively bright trench floor for being laid on trench bottom are obliquely installed in the bright ditch side plate 2 in irrigation canals and ditches side slope, wherein:
Bright trench floor 1 is provided with implantation hole 3, is provided with symmetrical first female bayonet 4 along both sides side slope, overall is in I-shaped, continuous laying
Three pieces of V-shaped arrangements of its implantation hole 3 of bright trench floor 1;Bright ditch side plate 2 is being provided with axle pair with the bottom of the bright joint of trench floor 1
The second female bayonet 5 claimed;Bright trench floor 1 and bright ditch side plate 2 are shifted to install, and pass through the first female bayonet 4 and the second spill card
5 engagings interlaced with each other of mouth.
Described bright trench floor 1 and bright ditch side plate 2 are Ecotype Concrete plate;
Described Ecotype Concrete plate, the weight of its raw material is:0.1-0.2 parts of stalk, 1 part of cement, sand
2.5-4 parts, 0.3-0.4 parts of water.
The half of the size of the first described female bayonet 4 matches with size at the side protrusion of the second female bayonet 5, and
The half of the size of the second described female bayonet 5 matches with size at the side protrusion of the first female bayonet 4;Described first
The size of 4 and second female bayonet of female bayonet 5 can be with identical, can also be different.
Any one in mullet grass, canna, reed, Scirpus tabernaemontani or its combination are planted in described implantation hole 3.
Described stalk removes debris through natural wind dry doubling, and 3-5cm segment is ground into by hay cutter.
Described bright trench floor 1 and bright ditch side plate 2 in the I-shaped mould of raw material injection after stirring by vibrating, conserving
Shaping.
As shown in Fig. 2 described Ecotype Concrete plate forms the loose structure being made up of hole 6 after straw degradative, by
Influenceed in stalk natural degradation by factors, therefore the loose structure size formed differs, form of diverse, loose structure is favourable
The interception and sedimentation of polluter in runoff, supplemented with organic carbon content, effectively preserve moisture and nutriment, it is ensured that plant
Growth, grows while being also beneficial to microorganism, greatly promotes purification of water quality ability.
First female bayonet 4 of described implantation hole 3 certain side on bright trench floor 1, its area is bright trench floor half
The 1/3-1/2 of width effective area;
The shape of described implantation hole 3 is not limited to the ellipse in Fig. 1.
As shown in Figure 3 and Figure 4, described bright ditch side plate 2 being used to the water surface at plucking in the 40cm altitude ranges of bottom
Reason,
Detailed process is:
S101, smear bottom ash:In to the bright bottom 40cm altitude ranges of ditch side plate 2 to the water surface sprinkle water wettability treatment after, use
Mass ratio is 1:3 cement mortar smears bottom ash and rubs surface with the hands flat, and bottom ash thickness control is in 10mm or so;
S102, float coat ash:Bottom ash have seventy percent it is dry when, with mass ratio be 1:0.1-0.2 cement lime mortar float coats
Ash, surface layer ash thickness control is in 3-5mm;
S103, plucking:Smear after surface layer ash immediately with hard palm fiber brush against surface layer one by a drawing, you can pull-out hair one by one
Head,
Complete wharf's pavement quality.
The present embodiment is related to a kind of construction method of environmental open drain, comprises the following steps:
S1, smooth irrigation canals and ditches:On the basis of nature is kept, clear list processing is carried out to original trench bottom and side slope;
Then levelling in trench bottom paving blotter, blotter thickness is 5-10cm, and length is set in discharge outlet and irrigation canals and ditches junction
2m, width 1.5m, high 1m sump, sump inwall brushed flat with concrete powder it is whole, the water side of sump be provided with wide 0.5m,
High 0.2m effluent weir, a large amount of suspensions that agricultural run-off is carried enter back into ecological canal after being precipitated through sump;
S2, put plate and reinforcing:Bright trench floor 1 is sequentially placed into levelling trench bottom, it is ensured that two pieces of adjacent bright bottoms of trench
Side slope of its implantation hole 3 of plate 1 respectively close to both sides;Then two blocks of bright ditch side plates 2 are placed in the first female bayonet 4 along side slope,
Second female bayonet 5 of bright ditch side plate 2 blocks two pieces of bright trench floors 1;Side slope soil is tamped afterwards, and uses rubble to bear down on one adds
Gu, it is ensured that irrigation canals and ditches stability;
S3, planting aquatic plants:Mullet grass, canna, reed, Scirpus tabernaemontani are planted in the implantation hole 3 arranged in continuous V-arrangement
In any one or its combine water plant, slow down the flow velocity of irrigation canals and ditches, effectively intercept suspension;
S4, set and intercept dam:High 30cm small-sized interception dam is set in environmental open drain end, ditch channel water is kept
Position,
Ensure plant growth.
In the case of long-term use, there is the ecological canal that the present embodiment is built preferably control to imitate to Farmland Flow Pollution
Really, as shown in table 1, wherein being not less than 80% to the clearance of ss suspended solid, the clearance of compound fertilizer is not less than
40%, Runoff contaminants can be effectively reduced on the basis of soil erosion is avoided enters river amount, mitigates surface water environment pollution negative
Lotus.
The present embodiment of table 1 is compared the pollutant removal of Farmland Flow Pollution with natural irrigation canals and ditches
Claims (9)
1. a kind of environmental open drain based on straw resource utilization, it is characterised in that including:It is laid on the band of trench bottom
The bright trench floor and relatively bright trench floor for having implantation hole are obliquely installed in the bright ditch side plate in irrigation canals and ditches side slope, wherein:Bright trench floor
Symmetrical first female bayonet is provided with along both sides side slope, bright ditch side plate is being provided with axisymmetric with the bottom of bright trench floor joint
Second female bayonet;Bright trench floor and bright ditch side plate are shifted to install and handed over each other by the first female bayonet and the second female bayonet
Mistake engaging.
2. the environmental open drain according to claim 1 based on straw resource utilization, it is characterized in that, described bright ditch
Bottom plate and bright ditch side plate are Ecotype Concrete plate, and the parts by weight of raw materials proportioning of the Ecotype Concrete plate is:Stalk 0.1-
0.2 part, 1 part of cement, 2.5-4 parts of sand, 0.3-0.4 parts of water.
3. the environmental open drain according to claim 2 based on straw resource utilization, it is characterized in that, described stalk
For length 3-5cm segment, debris is removed through natural wind dry doubling;The bar segment of the stalk is through natural degradation in Ecotype Concrete plate
Upper formation loose structure.
4. the environmental open drain according to claim 1 based on straw resource utilization, it is characterized in that, described plantation
First female bayonet of hole certain side on bright trench floor, its area is the 1/3-1/2 of bright trench floor half range effective area.
5. the environmental open drain according to claim 4 based on straw resource utilization, it is characterized in that, described plantation
Hole axle is symmetrical arranged, the V-shaped arrangement of implantation hole on three pieces of bright trench floors of continuous laying.
6. the environmental open drain according to claim 1 or 2 based on straw resource utilization, it is characterized in that, it is described
Bright ditch side plate uses wharf's pavement quality in bottom to the water surface, specifically refers to:
S101, smear bottom ash:It is 1 with mass ratio after wettability treatment is sprinkled water to the water surface to bright ditch side plate bottom:3 cement mortar
Smear bottom ash and rub surface with the hands flat, bottom ash thickness control is in 10mm or so;
S102, float coat ash:Bottom ash have seventy percent it is dry when, with mass ratio be 1:0.1-0.2 cement lime mortars float coat ash, face
The grey thickness control of layer is in 3-5mm;
S103, plucking:Smear after surface layer ash immediately with hard palm fiber brush against surface layer one by a drawing, you can pull-out burr one by one.
7. the environmental open drain according to claim 1 based on straw resource utilization, it is characterized in that, described ecology
Type open drain sets sump in discharge outlet and irrigation canals and ditches junction, and the water side of sump is provided with effluent weir.
8. the environmental open drain according to claim 7 based on straw resource utilization, it is characterized in that, described ecology
Type open drain end is provided with interception dam to keep water level in irrigation canals and ditches.
9. a kind of method for building the environmental open drain described in any of the above-described claim, it is characterised in that including following
Step:
S1, smooth irrigation canals and ditches:On the basis of nature is kept, clear list processing is carried out to original trench bottom and side slope;Then exist
Trench bottom paving blotter is levelling, while sump is set in agricultural drain mouthful and irrigation canals and ditches junction, and in irrigation canals and ditches water side
Effluent weir is set;
S2, put plate and reinforcing:Bright trench floor is sequentially placed into levelling trench bottom, it is ensured that two pieces of adjacent bright its kinds of trench floor
Plant side slope of the hole respectively close to both sides;Then along side slope angle, two blocks of bright ditch side plates, Ming Gou sides are placed in the first female bayonet
Second female bayonet of plate blocks two pieces of bright trench floors;Tamp side slope soil afterwards, and beared down on one reinforcing using rubble, it is ensured that irrigation canals and ditches
Stability;
S3, planting aquatic plants:Appointing in mullet grass, canna, reed, Scirpus tabernaemontani is planted in the implantation hole arranged in continuous V-arrangement
Meaning is a kind of or it combines water plant;
S4, set and intercept dam:Set in environmental open drain end and intercept dam, keep water level in irrigation canals and ditches.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710352777.8A CN106968228A (en) | 2017-05-18 | 2017-05-18 | Environmental open drain and its construction method based on straw resource utilization |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710352777.8A CN106968228A (en) | 2017-05-18 | 2017-05-18 | Environmental open drain and its construction method based on straw resource utilization |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106968228A true CN106968228A (en) | 2017-07-21 |
Family
ID=59326157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710352777.8A Pending CN106968228A (en) | 2017-05-18 | 2017-05-18 | Environmental open drain and its construction method based on straw resource utilization |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106968228A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109914363A (en) * | 2019-04-18 | 2019-06-21 | 上海夕露环境科技有限公司 | The ecology remodeling method of concrete open drain |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102010155A (en) * | 2010-01-19 | 2011-04-13 | 孙学军 | High-strength plant growing type porous concrete and preparation method thereof |
CN103321195A (en) * | 2012-08-23 | 2013-09-25 | 上海市环境科学研究院 | Farmland ecologic interception ditch adopting slope protection technology and construction method of ditch |
CN204163055U (en) * | 2014-10-30 | 2015-02-18 | 梅县洁源水电有限公司 | A kind of chute of water conservancy |
CN204662625U (en) * | 2015-05-28 | 2015-09-23 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of interlock type temporary drainage groove structure |
CN204959693U (en) * | 2015-09-24 | 2016-01-13 | 南京市水利规划设计院有限责任公司 | Assembled rectangle channel |
CN106120679A (en) * | 2016-06-29 | 2016-11-16 | 上海交通大学 | A kind of ecological canal with denitrogenation dephosphorizing function |
CN207348029U (en) * | 2017-05-18 | 2018-05-11 | 上海市环境科学研究院 | Environmental open drain based on straw resource utilization |
-
2017
- 2017-05-18 CN CN201710352777.8A patent/CN106968228A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102010155A (en) * | 2010-01-19 | 2011-04-13 | 孙学军 | High-strength plant growing type porous concrete and preparation method thereof |
CN103321195A (en) * | 2012-08-23 | 2013-09-25 | 上海市环境科学研究院 | Farmland ecologic interception ditch adopting slope protection technology and construction method of ditch |
CN204163055U (en) * | 2014-10-30 | 2015-02-18 | 梅县洁源水电有限公司 | A kind of chute of water conservancy |
CN204662625U (en) * | 2015-05-28 | 2015-09-23 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of interlock type temporary drainage groove structure |
CN204959693U (en) * | 2015-09-24 | 2016-01-13 | 南京市水利规划设计院有限责任公司 | Assembled rectangle channel |
CN106120679A (en) * | 2016-06-29 | 2016-11-16 | 上海交通大学 | A kind of ecological canal with denitrogenation dephosphorizing function |
CN207348029U (en) * | 2017-05-18 | 2018-05-11 | 上海市环境科学研究院 | Environmental open drain based on straw resource utilization |
Non-Patent Citations (1)
Title |
---|
王振旗等,基于旱作农田面源污染控制的生态沟渠构建及其拦截效果研究 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109914363A (en) * | 2019-04-18 | 2019-06-21 | 上海夕露环境科技有限公司 | The ecology remodeling method of concrete open drain |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106702980B (en) | Prevent the agricultural ecological drainage ditch construction method of furrow bank soil losses | |
CN104631380A (en) | Shore type ladder-grade two-dimensional surface flow water filtering riverbed in-situ ecological remediation method | |
CN102086643A (en) | Ecological engineering technology for stopping riverway coastal pollutants from entering rivers and restoring vegetation communities | |
CN102561254A (en) | River course ecological system for treating non-point source low-pollution water | |
CN102561264B (en) | Ecological protective slope and establishment method thereof | |
CN108265580B (en) | Construction method of sludge resource-based river channel ecological system with functions of sewage interception, slope protection and water purification | |
CN108612050B (en) | Method for preparing spongy soil ecological slope protection by utilizing dredged mud in-situ solidification | |
CN110642384A (en) | Artificial wetland system for reducing river beach and platform land pollution | |
CN109385975A (en) | A kind of compound river channel system | |
CN207348029U (en) | Environmental open drain based on straw resource utilization | |
CN106865777A (en) | A kind of lake view water body early-stage rainwater groundwater pollution control | |
CN110106828A (en) | A kind of ecological permeable dam suitable for small watershed in mountain river water quality strengthened purification | |
CN107117713B (en) | Method for purifying riverside zone constructed wetland of cadmium-polluted irrigation water | |
CN109695228A (en) | A method of it purifies water in shallow water river channel, channel structure bio-diversity | |
CN105804033A (en) | Integrated W-shaped farmland ecological liquid waste ditch | |
CN106968228A (en) | Environmental open drain and its construction method based on straw resource utilization | |
CN109113032B (en) | Ecological movable river sand blocking weir | |
CN204569552U (en) | A kind of unpowered downstream riverbank artificial wet land water quality purification system | |
CN109133498B (en) | Green belt rainwater bend interception pollution reduction device | |
CN111622189A (en) | Novel ecological ditch system | |
CN111087080A (en) | Efficient phosphorus removal ecological ditch aiming at farmland non-point source pollution and paving method thereof | |
CN110093826A (en) | A kind of tandem road rain water runoff ecological purification system and its construction method | |
CN212982714U (en) | Combined ecological filter bed for improving water quality of river channel | |
CN212506106U (en) | Stepped ecological revetment structure | |
CN105130090A (en) | River ditch sewage ecological strengthening self cleaning method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |