CN102515354B - Nitrogen phosphor interception undercurrent dam - Google Patents
Nitrogen phosphor interception undercurrent dam Download PDFInfo
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- CN102515354B CN102515354B CN201110342733XA CN201110342733A CN102515354B CN 102515354 B CN102515354 B CN 102515354B CN 201110342733X A CN201110342733X A CN 201110342733XA CN 201110342733 A CN201110342733 A CN 201110342733A CN 102515354 B CN102515354 B CN 102515354B
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- nitrogen phosphorus
- undercurrent dam
- filling layer
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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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Water Treatment By Sorption (AREA)
Abstract
The invention relates to an undercurrent dam which is applied in a farmland ecological trench to intercept substances such as nitrogen, phosphor and the like. According to the invention, water permeable walls are arranged at the two sides. A gravel filter layer is arranged in the middle of the water permeable walls. A soil cover layer is disposed over the gravel filter layer. A vegetable system is planted on the soil cover layer. The undercurrent dam can be placed in a farmland drainage channel and a surface flow wetland. In the surface flow wetland system, when sewage flows through the undercurrent dam, hydraulic retention time can be effectively increased; in addition, due to the arrangement of the gravel filter layer, suspending pollutants in the water body can be settled and absorbed, and plants on the undercurrent dam can effectively absorb eutrophicated pollutants such as nitrogen, phosphor and the like in the water body. Finally, sewage treatment effect of a common surface flow wetland is increased.
Description
Technical field
The present invention relates to a kind of nitrogen phosphorus interception undercurrent dam, be specifically related to a kind of nitrogen phosphorus interception undercurrent dam that is applied to the material such as agricultural ecological ditch interception nitrogen phosphorus.
Background technology
Chemical fertilizer this season utilization ratio (34.2%), the especially utilization rate of nitrogen fertilizer on the low side of China only have 30%～35%, are lower than the 10-20 of developed country percentage point.Yet the problem of environmental pollution that increase fertilizers input amount causes also becomes increasingly conspicuous, and this Agriculture Production Modes take a large amount chemical fertilizer input as the master has also directly accelerated the consumption of important natural resources.
Be accompanied by the utilization of high strength agrochemicals, the loss of the pollutents such as farmland nitrogen, phosphorus becomes the important factor that causes body eutrophication.Take in Taihu Lake as example, the statistics of the Serial monitoring of Taihu Lake basin representative region and experimental study shows in recent years, and the loss coefficient of farmland, basin nitrogen is about 10-20kg/hm
2A, the loss coefficient of phosphorus is about 1-5kg/hm
2A.Therefore, study and define cost-effective farmland nitrogen, phosphorus loss resistance control means, subdue the pollutant load such as nitrogen, phosphorus in the farmland drainage, for containment Taihu Lake body eutrophication, promote that basin society and sustainable economic development are significant.
The state that existing sewage work often is in intermittent operation or does not move because processing cost and standing charges are expensive causes the waste of a large amount of construction funds and the increasingly deterioration of environmental pollution.In addition, traditional activated sludge process is to remove the carbon source pollutent as main, and is then very little to the removal of the nutritive substances such as nitrogen phosphorus, and water outlet enters problems such as easily causing eutrophication behind the environment water.
Artificial swamp is to develop in recent decades faster a kind of effective sewage disposal technology, and less investment, easy care, good purification, applied widely are paid much attention to, and at the existing many application examples of China, has obtained good environmental effect at present.
Hydraulic detention time is one of important design variable of artificial marsh sewage treatment system, this parameter has great significance for removing Water, phosphorus and suspended substance etc., current wetland often can increase hydraulic detention time in the processing unit of less, realize identical hydraulic detention time for the processing unit that surface stream wetland then needs relatively to grow.
But the advantage that flows the wetland wetland with current wetland phase specific surface is design and simple to operate, less investment, working cost is low, in order to improve existing surface current artificial wetland's nitrogen phosphorus interdiction capability, increase surface current artificial wetland's hydraulic detention time, subdue water body nitrogen phosphorus and suspended substance etc., designed following nitrogen phosphorus interception undercurrent dam.
Summary of the invention
The object of the invention is to provide a kind of nitrogen phosphorus interception undercurrent dam, thereby increases the Surface Flow Constructed Wetlands hydraulic detention time, improves the water pollutant treatment effect, beautifies surrounding enviroment.
The present invention is achieved in that
A kind of nitrogen phosphorus interception undercurrent dam, there is permeable wall both sides, are provided with the gravel filling layer in the middle of the permeable wall, above the gravel filling layer soil cover are arranged, and plant on the soil cover and are implanted with vegetation system.
The gravel filling layer reduces gradually along its grain size of gravel of water (flow) direction.
The vegetation of described vegetation system plantation comprises evergreen shrubs and evergreen turfgrass.
Evergreen shrubs in the botanical system can be the shrubs such as Chinese ilex, little leaf boxwood, glossy privet, barberry, Chinese littleleaf box, Chinese photinia, and evergreen lawn can be English ryegrass, Festuca Arundinacea, annual bluegrass, coronule flower etc.
In the middle of gravel filling layer and soil cover, can bury a pipeline that runs through whole nitrogen phosphorus interception undercurrent dam underground.
In the gravel filling layer, current updrift side grain size of gravel size is 5 to 8cm, and current downstream direction grain size of gravel is 1 to 3cm; Gravel filling in the gravel filling layer can be in the materials such as pebbles, useless fragment of brick, cement block, cinder one or more.Permeable wall is that hollow brick assembles and forms, and thickness is 40cm.
Described nitrogen phosphorus interception undercurrent dam length degree is 4 to 8m, and height 70 is to 90cm, and width can be adjusted according to the different ecosystems and practical situation.
The gravel bed packing height is 40-50cm, covers the pedosphere of high 30-40cm at gravel bed.
This nitrogen phosphorus interception undercurrent dam can place agriculture drainage ditch and surface current artificial wetland, when sewage in the Surface Flow Constructed Wetlands is tackled the undercurrent dam by nitrogen phosphorus, can effectively increase hydraulic detention time, and owing to being provided with the gravel filling layer, can make the suspended contaminant in the water body obtain sedimentation and absorption, plant on the nitrogen phosphorus interception undercurrent dam also can effectively absorb the eutrophication pollution things such as nitrogen phosphorus in the water body, finally increases the wastewater treatment efficiency of general surface turning flow artificial wetland.
Description of drawings
Fig. 1 is the structural representation on nitrogen phosphorus interception undercurrent dam.
Embodiment
A kind of nitrogen phosphorus interception undercurrent dam, its width is according to agriculture drainage ditch or surface current artificial wetland's structure, length 4-8m, height 70-90cm, the both sides permeable wall is determined according to nitrogen phosphorus interception undercurrent height of dam degree, thickness is 40cm, formed by staggered the assembling of perforated brick, inner close water inlet one side of permeable wall is filled large particle diameter gravel and (can be pebbles, the brickbat head, slag etc.), then reduce successively that grain size of gravel is filled until the opposite side permeable wall, the gravel bed packing height is 40-50cm, cover the pedosphere of high 30-40cm at gravel bed, the plantation evergreen shrubs is such as Chinese ilex on the soil, little leaf boxwood, glossy privet, barberry, Chinese littleleaf box, the shrubs such as Chinese photinia, evergreen lawn such as English ryegrass, Festuca Arundinacea, annual bluegrass, coronule flower etc.
Application of the present invention can effectively increase surface current artificial wetland's hydraulic detention time, the gravel packing layer can effectively adsorb and tackle the pollutent in the water body, botanical system can absorption and sorption and the enrichment water body in pollutent, can and beautify the environment for the water body delivering oxygen simultaneously, effectively reduce water body nitrogen phosphorus 40%-50% through this system of the continuous service more than 2 years.
Claims (2)
1. a nitrogen phosphorus is tackled the undercurrent dam, it is characterized in that: there is permeable wall described nitrogen phosphorus interception both sides, undercurrent dam, are provided with the gravel filling layer in the middle of the permeable wall, above the gravel filling layer soil cover are arranged, and vegetation system is arranged on the soil cover; The gravel filling of described gravel filling layer is pebbles, and described gravel filling reduces gradually along the water (flow) direction grain size of gravel; In the gravel filling layer, current updrift side grain size of gravel size is 5 to 8cm, and current downstream direction grain size of gravel is 1 to 3cm;
The vegetation of described vegetation system plantation comprises evergreen shrubs and evergreen turfgrass; Described evergreen shrubs is Chinese ilex, little leaf boxwood, glossy privet, barberry, Chinese littleleaf box, Chinese photinia, and evergreen lawn is English ryegrass, Festuca Arundinacea, annual bluegrass, coronule flower;
Described permeable wall is that hollow brick assembles and forms, and thickness is 40cm;
Described nitrogen phosphorus interception undercurrent dam length degree is 4 to 8m, and height 70 is to 90cm, and the gravel filling layer height is 40-50cm, and the soil cover height is 30-40cm.
2. described nitrogen phosphorus is tackled the undercurrent dam according to claim 1, it is characterized in that: in the middle of gravel filling layer and soil cover, be embedded with a pipeline that runs through whole nitrogen phosphorus interception undercurrent dam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110342733XA CN102515354B (en) | 2011-11-03 | 2011-11-03 | Nitrogen phosphor interception undercurrent dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110342733XA CN102515354B (en) | 2011-11-03 | 2011-11-03 | Nitrogen phosphor interception undercurrent dam |
Publications (2)
| Publication Number | Publication Date |
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| CN102515354A CN102515354A (en) | 2012-06-27 |
| CN102515354B true CN102515354B (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110342733XA Expired - Fee Related CN102515354B (en) | 2011-11-03 | 2011-11-03 | Nitrogen phosphor interception undercurrent dam |
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| CN (1) | CN102515354B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910783A (en) * | 2012-10-18 | 2013-02-06 | 江苏商达水务有限公司 | Artificial wetland micro power treating system applied to rural biological sewage |
| CN103086570B (en) * | 2013-01-15 | 2014-07-02 | 天津大学 | Farmland non-point pollution stepped undercurrent dam ecological purification ditch system |
| CN103112954B (en) * | 2013-03-08 | 2014-04-30 | 江苏省环境科学研究院 | Method for prevention and control of non-point source pollution and cyclic utilization of resources of tea garden and system thereof |
| CN103410124A (en) * | 2013-08-23 | 2013-11-27 | 中国科学院东北地理与农业生态研究所 | Method for constructing ecological intercepting dams capable of improving wet land water levels |
| CN103663702B (en) * | 2013-10-18 | 2015-08-05 | 浙江绿凯环保科技股份有限公司 | A kind of town and country polluted-water source of pollution ecological intercepting technology |
| CN103866743B (en) * | 2014-02-14 | 2015-07-08 | 河海大学 | Environment-friendly barrage and water body purification method |
| CN104174641B (en) * | 2014-08-19 | 2016-03-16 | 四川达沃斯生态环保科技有限公司 | A kind of heavy-metal contaminated soil prosthetic device and isolation restorative procedure |
| CN105706691A (en) * | 2016-02-18 | 2016-06-29 | 广东省生态环境与土壤研究所 | Method for reducing farmland drainage canal nitrogen and phosphorus loss through charcoal |
| CN106277657A (en) * | 2016-10-31 | 2017-01-04 | 中冶华天工程技术有限公司 | The most interim purifying integral system and effluent purification method |
| CN108423919B (en) * | 2018-01-30 | 2021-04-06 | 苏州农业职业技术学院 | Nitrogen phosphorus interception's purification dam that permeates water |
| CN108358397A (en) * | 2018-03-26 | 2018-08-03 | 新乡市环境保护科学设计研究院 | A kind of Multi-functional effluent treatment unit for improving the ecological environment |
| CN109574402A (en) * | 2018-12-28 | 2019-04-05 | 安徽水韵环保股份有限公司 | A kind of ecological circulation in situ for river regulation filters system only |
Family Cites Families (4)
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| HU188972B (en) * | 1983-10-17 | 1986-05-28 | Varosepitesi Tudomanyos Es Tervezoe Intezet,Hu | Method for protecting agatnst europhizing of lakes caused by underground water |
| CN100503473C (en) * | 2005-12-01 | 2009-06-24 | 北京建筑工程学院 | T-shape dam upward flow potential-flow wet ground |
| CN101973638B (en) * | 2010-11-09 | 2011-11-09 | 河海大学 | Ecological percolating type water purification groin system |
| CN202416277U (en) * | 2011-11-03 | 2012-09-05 | 农业部环境保护科研监测所 | Nitrogen and phosphorus intercepting submerged dam for ecological ditch |
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| CN102515354A (en) | 2012-06-27 |
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