CN101575145A - Riverway water quality purification and ecosystem restoration adjustable wetland technology - Google Patents
Riverway water quality purification and ecosystem restoration adjustable wetland technology Download PDFInfo
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- CN101575145A CN101575145A CNA2009100159680A CN200910015968A CN101575145A CN 101575145 A CN101575145 A CN 101575145A CN A2009100159680 A CNA2009100159680 A CN A2009100159680A CN 200910015968 A CN200910015968 A CN 200910015968A CN 101575145 A CN101575145 A CN 101575145A
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention provides riverway water quality purification and ecosystem restoration adjustable wetland technology, which comprises that: a rubber dam with adjustable height is arranged in a riverway; potamogeton plants are planted at the upstream of the rubber dam of the riverway to form artificial wetland; the planting density of the potamogeton plants is between 20 and 30 clusters/m<2>, and a cluster is between 3 and 4 plants; the retention and purification time of river water in the artificial wetland is adjusted by adjusting the height of the rubber dam, the height of the rubber dam is improved in normal and dry seasons to store water to make the water level at the upstream of the rubber dam of the riverway improved, and the adjusting height of the rubber dam is determined by the COD concentration of the river water at the inlet of the artificial wetland and the temperature of the river water. By planting the potamogeton plants in the riverway to form the wetland, instead of lifting the water onto land to construct an artificial wetland, the technology can more directly and effectively restore the damaged riverway ecosystem, improve the water quality of polluted river water, and can ensure normal flood discharge of the riverway in flood season.
Description
Technical field
The present invention relates to a kind of purification of water quality and river channel ecology that is applied to light polluted river channel and repair wetland technology, belong to the riverway water quality purification technical field.
Background technology
The northern area of China rainfall amount seasonal variation is bigger, river level fluctuates bigger thereupon, in par and dry season (generally being annual April to June and March September to next year), because lacking rainwash replenishes, and ground water table is lower, some rivers become gradually receives dirty river, and main what collect is discharging water outlet after the municipal sewage plant handles.The emission standard of China municipal sewage plant " urban wastewater treatment firm pollutent comprehensive discharge standard " (GB18918-2002) is stipulated, when the water outlet of municipal sewage plant enters the less river of dilution capacity, need reach one-level B requirement, promptly organism (COD) concentration is less than 50mg/L.Generally speaking, the river is before importing centralized Drinking Water surface water seedbed, need reach surface water III generic request, be that COD concentration is less than 20mg/L, and at northern area, in par and dry season, because flow is less, river only flows at main stem, and the water self-cleaning ability in river can not get effective performance, and its COD concentration is usually above 20mg/L before importing the surface water seedbed.In addition, China municipal sewage plant generally adopts biological treatment, its effluent quality fluctuation, and the situation of effluent COD concentration up to 70mg/L can appear in the period once in a while.For the light polluted river water of COD concentration between 20mg/L-70mg/L, the quality of river water after how by purification of water quality it being handled is stable to reach surface water III generic request has become the hot issue that field of water treatment is in recent years paid close attention to.
Existing light polluted river water purification techniques is divided into transposition treatment technology and in-situ treatment technology, and wherein, the transposition treatment technology need be at the newly-built water treatment building in both sides, periphery, river course, and its construction investment is big, and working cost is higher relatively; The in-situ treatment technology then mainly realizes the purification of water quality of polluted river water by the natural purifying ability that improves the river course, working cost is relatively low.
Existing river channel ecology recovery technique mainly relies on river course planted on two sides emergent and submerged plant, as CN101264981 disclosed " a kind of stair device that is used for the river water body restoration of the ecosystem "; Perhaps in the river course, place the modes such as floating bed of having planted plant and purify water, as CN2825630 disclosed " system of floating composite botanical zone in situ biologically rehabilitating water body ".Above-mentioned technology can directly absorb pollution substance in the river by such plant self on the one hand, play the effect that purifies water, on the other hand, above-mentioned plant has the effect of microbe carrier (filler), can significantly improve the microorganism total amount in the river course, thereby strengthen the natural purifying ability in river course.
Although more than two technology can repair the ecotope in impaired river course, purifying polluted quality of river water in actual river water quality recovery project, is promoted owing to exist following open defect, these two technology all not to obtain engineering.In par and dry season, the river run-off is less, and the naked leakage in most of river shoal only has current at main stem.On the one hand, the dry season river water quality is generally relatively poor, and on the other hand, the current of dry season only contact with main stem, and hydraulic detention time is shorter, and the purification of water quality ability in river course can not get effective performance, and river can not get effective purification.In abundance of water season, emergent of arranging in the river course and the plant floating bed flood discharge function that can influence the river course exist certain flood control hidden danger.
Summary of the invention
The present invention is directed to existing river channel ecology recovery technique that exist with problem river flood control functional requirement contradiction, a kind of riverway water quality purification and ecosystem restoration adjustable wetland technology are provided, this technology both can realize the effective purification to river water quality, can ensure the normal flood discharge of river course in the flood season again.
Riverway water quality purification of the present invention and ecosystem restoration adjustable wetland technology are:
Adjustable for height rubber dam is set in the river course,, forms artificial swamp the rubber dam upstream in river course plantation Potamogeton plant, the plantation of Potamogeton plant is in annual 8-10 month, its underground stem tuber is put into the water-bed cave of beating, cover with soil, planting density is 20 clumps/m
2-30 clumps/m
2, 3 strain/clump-4 strain/clumps are by regulating the delay clarification time of altitude mixture control river in artificial swamp of rubber dam; Height at par and dry season lifting rubber dam carries out retaining, the rubber dam upper pond level in river course is raise, the adjusting height of rubber dam is determined by organism (COD) concentration and the river temperature of artificial swamp inlet river, when the river water temperature is higher than 15 ℃, when if artificial swamp inlet river COD concentration is 20mg/L-40mg/L, it is 5 days-10 days that adjusting rubber dam height is kept the artificial swamp hydraulic detention time, if artificial swamp inlet river COD concentration is 40mg/L-70mg/L, then regulating the rubber dam height, to keep the artificial swamp hydraulic detention time be 15 days-30 days; When the river water temperature was lower than 15 ℃, when river COD concentration was 20mg/L-40mg/L if artificial swamp enters the mouth, it was 20 days-35 days that adjusting rubber dam height is kept the artificial swamp hydraulic detention time; If artificial swamp inlet river COD concentration is 40mg/L-70mg/L, then regulating the rubber dam height, to keep the artificial swamp hydraulic detention time be 35 days-50 days; Discharge water by reducing the rubber dam height season at abundance of water, the flood discharge function is born in the river course.
Pave hollow brick in the two sides, river course and carry out bank protection, and plantation Manila grass is as turf in hollow brick, the density of cultivated area is 40%, top, riverbank plantation fastgrowing trees trees (as willow etc., per 5 meters plantation 1 strains).Can prevent the erosion of rainwash like this to the riverbank.
Satisfying under the above hydraulic detention time condition, the water outlet after par and dry season wetland are handled can reach surface water III class water quality standard (GB 3838-2002), and promptly COD≤20mg/L can satisfy water resources reuse requirement.Prolonged the hydraulic detention time of polluted river water in the river course on the one hand, can make river be able to sufficient the contact on the other hand with wetland plant in the river course, strengthen the self-purification capacity and the decontamination effect improving of water body, simultaneously, also can make the rubber dam upper river become a water body that possesses the function of regulating and storing.
Rubber dam is at present in the water conservancy industry widespread use, general equal can be by charging and discharging its height of gas free adjustment.
The emergent of planting in Potamogeton plant (as silk leaf Herba potamogetonis distincti etc.) and the traditional artificial swamp process of construction (as reed, cattail etc.) is different, Potamogeton plant limbs softness, cauline leaf is elongated, wash away down constantly swing at current, the resistance that current are produced is very little, does not influence the flood control capacity in river course.In the present invention, such submerged plant can also strengthen the self-purification capacity in river course by following multiple effective function mechanism, and repairs impaired river channel ecology:
1. such plant can directly absorb solvability inorganic phosphate and nitrate from river, by its growth is utilized, and by periodical reaping, removes water body, has reduced the content of nutritive salt such as water body nitrogen, phosphorus.The nutritive salt of these forms is easily directly absorbed by plant plankton, so reduced the possibility of eutrophication generation from the source.
2. the growth of such plant helps the sedimentation of suspended matter, thereby has reduced the content of water nutrition material, and constantly absorbs nutritive substance in the settling by root system, and river drift is also played cleaning action.
3. such plant can increase water body and sedimental dissolved oxygen content, has suppressed the release of the endogenous nutritive substance of settling to a certain extent.
4. such plant can shut out the light by competing nutrition with algae, and allelopathy etc. suppress algae grows.
5. such plant can absorb heavy metal and the agricultural chemicals in water body and the settling.
6. such plant is the good carrier that microbial film adheres to, and the existence of large number of biological film has strengthened its decontamination effect improving to water quality.
The present invention sets up wetland by plantation Potamogeton plant in the river course, rather than water is risen to land structure artificial swamp, and modes such as floating bed plantation plant purifies water are different with settling in the existing river course; Can more directly repair impaired river channel ecology effectively, improve the water quality of polluted river water, and can ensure the normal flood discharge of river course in the flood season.River water quality and hydrologic regime according to Various Seasonal, regulate the rubber dam height and carry out retaining, can fully contact with river by plant on the one hand, the guarantee polluted river water is realized the enough purification of water quality time in artificial swamp, on the other hand, can realize the regulating and storing of water resources, strengthen the ability of utilizing of water resources.Enlarge coverage of water, helped keeping water temperature in the winter time, guaranteed the effect of purification of water quality.
Description of drawings
Fig. 1 is a wetland floor map of the present invention.
Fig. 2 is a wetland diagrammatic cross-section of the present invention.
Fig. 3 is the form synoptic diagram of Potamogeton plant.
Wherein: 1. rubber dam, 2, the Potamogeton plant, 3, the river course, 4, the charge and exhaust pipe road, 5, valve, 6, the gas transmission station, 7, the riverbank, 8, turf, 9, the fastgrowing trees trees.
Embodiment
As depicted in figs. 1 and 2; riverway water quality purification of the present invention and ecosystem restoration adjustable wetland technology at first are to build rubber dam 1 on main stem 3; rubber dam 1 is a kind of pocket type checkdam of widespread use; do stress frame with the high strength synthetic fibre fabric; inside and outside coating rubber is made protective layer, is processed into adhesive plaster, it is anchored in the dam bag that becomes closed on the base plate again; by filling the pocket type checkdam that comb road water or gas form its inflation, dam crest can overflow.According to the quality of river water and the hydrologic condition of Various Seasonal, start gas transmission station 6, open variable valve 5, charge and discharge controlled atmosphere joint rubber dam 1 to proper height by charge and exhaust pipe road 4, improve the river course upper pond level, ensure that polluted river water purifies required hydraulic detention time.
Evenly plant the less Potamogeton plant 2 of flow resistance in rubber dam 1 upstream in river course according to the hydraulic condition of river condition then.The form of Potamogeton plant 2 as shown in Figure 3, its limbs softness, cauline leaf is elongated, washes away down constantly swing at current, the resistance that current are produced is very little, does not influence the flood control capacity in river course.Stem tuber breeding method or seminal propagation method are adopted in the plantation of Potamogeton plant 2, in annual 8-10 month, selection is grown in the Herba potamogetonis distincti population of shallow-water environment, excavate the bed mud on top layer with spade along plant roots and stems, take out underground stem tuber therein, stem tuber is put into the water-bed cave of beating, cover with soil, planting density is 20 clumps/m
2-30 clumps/m
2, 3 strain/clump-4 strain/clumps.Through a large amount of tests, such density makes detergent power and flood carrying capacity can reach optimum matching.Also can adopt the plantation of seminal propagation method, in annual 6-9 month, collect seed in Herba potamogetonis distincti growth location, select the inflorescence that mature fruit is arranged, it is cut, be immersed in the bucket that fills water, after taking back, the seed disinfection, preserve down in cold condition again, take out seed then, destroy kind of a skin, shed to water body.Adopt the seminal propagation method to plant wayward planting density, the overstocked flood control capacity that influences.
In par and dry season (annual April to June and March September to next year), carry out retaining by the height of inflating rising rubber dam 1, the river course upper pond level is raise.The adjusting height of rubber dam is determined by the COD concentration and the river temperature of artificial swamp inlet river.Usually, during the 4-6 month and the 9-11 month, the river water temperature is higher than 15 ℃, and when river COD concentration was 20mg/L-40mg/L if artificial swamp enters the mouth, it was 5 days-10 days that adjusting rubber dam height is kept the artificial swamp hydraulic detention time; If artificial swamp inlet river COD concentration is 40mg/L-70mg/L, then regulating the rubber dam height, to keep the artificial swamp hydraulic detention time be 15 days-30 days.In March December to next year, the river water temperature is lower than 15 ℃, and when river COD concentration was 20mg/L-40mg/L if artificial swamp enters the mouth, it was 20 days-35 days that adjusting rubber dam height is kept the artificial swamp hydraulic detention time; If artificial swamp inlet river COD concentration is 40mg/L-70mg/L, then regulating the rubber dam height, to keep the artificial swamp hydraulic detention time be 35 days-50 days.In the hydraulic retention stage, when river flows through Potamogeton plant 2, contact fully with it, under the acting in conjunction of Potamogeton plant 2 and its attached biological film, the pollution substance in river and the settling is effectively removed.After water level was brought up to design water level, downstream river course was gone in the river overflow after the purification.Satisfying under the above hydraulic detention time condition, the water outlet after par and dry season artificial swamp are handled can reach surface water III class water quality standard (GB 3838-2002), and promptly COD≤20mg/L can satisfy water resources reuse requirement.
At abundance of water season (generally being that June is to September), can reduce rubber dam 1 by venting and highly discharge water, thereby avoid river course flood is exerted an influence, the flood discharge function is mainly born in the river course.Abundance of water season, because river discharge is abundant, can flood all submerged plants in the artificial swamp substantially, the purification of water quality ability of artificial swamp also can be not fully exerted.
On the riverbank 7 in river course, pave the hollow brick bank protection, and plantation Manila grass is as turf 8 (planting density 40%), top, riverbank plantation one row fastgrowing trees trees 9 (as willow etc., per 5 meters plantation 1 strains).
Embodiment 1:
In the downstream, Yihe 2 kilometers locate to build retaining 1,500,000 m
3The barrage rubber dam, water surface area 500,000 m
2, formed place's man-made lake.Build the total area 200,000 m in the rubber dam upstream
2Artificial swamp, a plantation silk leaf Herba potamogetonis distincti, 20 clumps/m of planting density
2(4 strain/clump).Par season (the 4-6 month and the 9-11 month) was regulated the artificial swamp hydraulic detention time in the time of 7-10 days, wetland inlet COD content average out to 38.7mg/L, and wetland outlet COD content average out to 13.3mg/L, the COD clearance can reach 65.6%.Dry season (March December to next year), regulating the artificial swamp hydraulic detention time in the time of 35-45 days, wetland inlet COD content average out to 67.7mg/L, wetland outlet COD content average out to 17.1mg/L, the COD clearance can reach 74.7%.Reached surface water III class water quality standard (GB 3838-2002), i.e. COD≤20mg/L.
Locate to build retaining 1,000,000 m for 1 kilometer in big downstream, Shahe
3The barrage rubber dam, water surface area 320,000 m
2, formed place's man-made lake.Build the total area 150,000 m in the rubber dam upstream
2Artificial swamp, a plantation silk leaf Herba potamogetonis distincti, 25 clumps/m of planting density
2(4 strain/clump).Par season (the 4-6 month and the 9-11 month) was regulated the artificial swamp hydraulic detention time in the time of 8-10 days, wetland inlet COD content average out to 37.1mg/L, and wetland outlet COD content average out to 15.3mg/L, the COD clearance can reach 58.8%.Dry season (March December to next year), regulating artificial swamp hydraulic detention time 35-50 days, wetland inlet COD content average out to 65.4mg/L, wetland outlet COD content average out to 16.6mg/L, the COD clearance can reach 74.6%.Reached surface water III class water quality standard (GB 3838-2002), i.e. COD≤20mg/L.
Claims (2)
1. riverway water quality purification and ecosystem restoration adjustable wetland technology is characterized in that:
Adjustable for height rubber dam is set in the river course,, forms artificial swamp the rubber dam upstream in river course plantation Potamogeton plant, the plantation of Potamogeton plant is in annual 8-10 month, its underground stem tuber is put into the water-bed cave of beating, cover with soil, planting density is 20 clumps/m
2-30 clumps/m
2, 3 strain/clump-4 strain/clumps are by regulating the delay clarification time of altitude mixture control river in artificial swamp of rubber dam; Height at par and dry season lifting rubber dam carries out retaining, the rubber dam upper pond level in river course is raise, the adjusting height of rubber dam is determined by the organic concentration and the river temperature of artificial swamp inlet river, when the river water temperature is higher than 15 ℃, when if artificial swamp inlet river COD concentration is 20mg/L-40mg/L, it is 5 days-10 days that adjusting rubber dam height is kept the artificial swamp hydraulic detention time, if artificial swamp inlet river COD concentration is 40mg/L-70mg/L, then regulating the rubber dam height, to keep the artificial swamp hydraulic detention time be 15 days-30 days; When the river water temperature was lower than 15 ℃, when river COD concentration was 20mg/L-40mg/L if artificial swamp enters the mouth, it was 20 days-35 days that adjusting rubber dam height is kept the artificial swamp hydraulic detention time; If artificial swamp inlet river COD concentration is 40mg/L-70mg/L, then regulating the rubber dam height, to keep the artificial swamp hydraulic detention time be 35 days-50 days; Discharge water by reducing the rubber dam height season at abundance of water, the flood discharge function is born in the river course.
2. riverway water quality purification according to claim 1 and ecosystem restoration adjustable wetland technology, it is characterized in that: two sides, described river course are paved hollow brick and are carried out bank protection, and plantation Manila grass is as turf in hollow brick, and the density of cultivated area is 40%, top, riverbank plantation fastgrowing trees trees.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061677A (en) * | 2010-12-09 | 2011-05-18 | 河海大学 | Full-section water wetland purification system suitable for normal water level of river |
| CN102329000A (en) * | 2011-06-08 | 2012-01-25 | 山东建筑大学 | Tandem type riverway water quality improvement and water resource storage adjustment method |
| CN102531182A (en) * | 2011-12-30 | 2012-07-04 | 南京大学 | System for purifying micro-polluted water flowing to reservoirs (lakes) and repairing ecological wetlands |
| CN102966071A (en) * | 2012-11-02 | 2013-03-13 | 同济大学 | In-situ treatment method for shallow flow rejuvenated water riverway |
| CN104310592A (en) * | 2014-11-12 | 2015-01-28 | 临沂大学 | Artificial wetland treatment system for diversion and purification of river at lake inlet in northern area |
| CN104746472A (en) * | 2015-01-29 | 2015-07-01 | 无锡昊瑜节能环保设备有限公司 | River levee ecological plantation tool used for preventing water and soil loss |
| CN105800789A (en) * | 2016-04-13 | 2016-07-27 | 广州城建职业学院 | Invisible horizontal flow type constructed wetland system |
| CN106192873A (en) * | 2016-07-21 | 2016-12-07 | 广西红树林研究中心 | Island Wetland ecological water-retaining method |
| CN107226532A (en) * | 2017-07-17 | 2017-10-03 | 常州大学 | Old countries pollution is intercepted and water body purification system |
| AT15789U3 (en) * | 2015-03-24 | 2018-11-15 | Research Institute Of Forestry New Tech Chinese Academy Of Forestry | Artificial water system and construction method of the artificial water system for the ecological prevention and treatment of algal blooms |
| CN108978597A (en) * | 2018-07-24 | 2018-12-11 | 王俊利 | Biofiltration slope protection and its construction method for river corridor restoration |
| CN109819845A (en) * | 2019-03-21 | 2019-05-31 | 中国水产科学研究院渔业机械仪器研究所 | The building structure in habitat is inhabited in a kind of river |
| CN110804998A (en) * | 2019-09-12 | 2020-02-18 | 天津大学 | Ecological artificial river channel with variable water passing section |
| CN113402028A (en) * | 2021-05-14 | 2021-09-17 | 中国环境科学研究院 | Artificial wetland system |
| CN114436403B (en) * | 2022-01-15 | 2024-04-09 | 北京林业大学 | Method for improving water quality purifying capacity of grass type shallow lake wetland based on harvesting submerged plants |
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2009
- 2009-06-09 CN CN2009100159680A patent/CN101575145B/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061677B (en) * | 2010-12-09 | 2012-04-11 | 河海大学 | Full-section water wetland purification system suitable for normal water level of river |
| CN102061677A (en) * | 2010-12-09 | 2011-05-18 | 河海大学 | Full-section water wetland purification system suitable for normal water level of river |
| CN102329000A (en) * | 2011-06-08 | 2012-01-25 | 山东建筑大学 | Tandem type riverway water quality improvement and water resource storage adjustment method |
| CN102531182A (en) * | 2011-12-30 | 2012-07-04 | 南京大学 | System for purifying micro-polluted water flowing to reservoirs (lakes) and repairing ecological wetlands |
| CN102966071A (en) * | 2012-11-02 | 2013-03-13 | 同济大学 | In-situ treatment method for shallow flow rejuvenated water riverway |
| CN104310592A (en) * | 2014-11-12 | 2015-01-28 | 临沂大学 | Artificial wetland treatment system for diversion and purification of river at lake inlet in northern area |
| CN104310592B (en) * | 2014-11-12 | 2016-04-20 | 临沂大学 | A kind of northern area enters river, exit of a lake shunting purification artificial wet land treating system |
| CN104746472A (en) * | 2015-01-29 | 2015-07-01 | 无锡昊瑜节能环保设备有限公司 | River levee ecological plantation tool used for preventing water and soil loss |
| AT15789U3 (en) * | 2015-03-24 | 2018-11-15 | Research Institute Of Forestry New Tech Chinese Academy Of Forestry | Artificial water system and construction method of the artificial water system for the ecological prevention and treatment of algal blooms |
| CN105800789A (en) * | 2016-04-13 | 2016-07-27 | 广州城建职业学院 | Invisible horizontal flow type constructed wetland system |
| CN106192873A (en) * | 2016-07-21 | 2016-12-07 | 广西红树林研究中心 | Island Wetland ecological water-retaining method |
| CN107226532A (en) * | 2017-07-17 | 2017-10-03 | 常州大学 | Old countries pollution is intercepted and water body purification system |
| CN108978597A (en) * | 2018-07-24 | 2018-12-11 | 王俊利 | Biofiltration slope protection and its construction method for river corridor restoration |
| CN108978597B (en) * | 2018-07-24 | 2021-05-25 | 国投信开水环境投资有限公司 | Biological filtration slope protection for river ecological restoration and construction method thereof |
| CN109819845A (en) * | 2019-03-21 | 2019-05-31 | 中国水产科学研究院渔业机械仪器研究所 | The building structure in habitat is inhabited in a kind of river |
| CN110804998A (en) * | 2019-09-12 | 2020-02-18 | 天津大学 | Ecological artificial river channel with variable water passing section |
| CN113402028A (en) * | 2021-05-14 | 2021-09-17 | 中国环境科学研究院 | Artificial wetland system |
| CN114436403B (en) * | 2022-01-15 | 2024-04-09 | 北京林业大学 | Method for improving water quality purifying capacity of grass type shallow lake wetland based on harvesting submerged plants |
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Assignee: Shandong Academy of Environmental Science Assignor: Shandong Construction University Contract record no.: 2011370000513 Denomination of invention: Riverway water quality purification and ecosystem restoration adjustable wetland technology Granted publication date: 20101201 License type: Common License Open date: 20091111 Record date: 20111206 |
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