CN205347101U - Control of rice terrace non -point source pollution and nitrogen phosphorus recycle system - Google Patents
Control of rice terrace non -point source pollution and nitrogen phosphorus recycle system Download PDFInfo
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- CN205347101U CN205347101U CN201521002954.2U CN201521002954U CN205347101U CN 205347101 U CN205347101 U CN 205347101U CN 201521002954 U CN201521002954 U CN 201521002954U CN 205347101 U CN205347101 U CN 205347101U
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Abstract
The utility model discloses a control of rice terrace non -point source pollution and nitrogen phosphorus recycle system belongs to pollution control technical field. The utility model discloses a system is equipped with the unit that catchments, grid filter unit, buffer unit, nitrogen phosphorus in proper order and adsorbs unit, constructed wetland, holds water facilities naturally, wherein hold water facilities naturally and recharge unit and nitrogen phosphorus absorption unit connection through the water conservancy, be equipped with first rivers on -off control unit between nitrogen phosphorus absorption unit and the constructed wetland, the water conservancy is recharged and is equipped with second rivers on -off control unit between unit and the nitrogen phosphorus absorption unit. Compared with the prior art, the utility model discloses in maximize ground control water body pollution, realized the recycle of nitrogen phosphorus material and getting along amiably and peacefully of facility and nature, reach the purpose of pollution control and saving fertilization cost.
Description
Technical field
This utility model relates to a kind of rice terrace pollution of area source and controls to utilize system with recovery of nitrogen and phosphorus, belongs to pollution prevention technique field.
Background technology
In vast rural area, widespread pollution from the overuse of fertilizers and pesticides in rural area is the important sources of water environment pollution, and its major pollutants matter is nitrogen phosphorus, and it is the main matter causing body eutrophication.The main source of agricultural nitrogen phosphorus pollution of area source includes farmland fertilization, animal fecaluria and productive life sewage etc., and wherein farmland fertilization accounting is maximum.
In proportion of crop planting process, people use the organic or inorganic chemical fertilizer of the rich Nitrogen-and Phosphorus-containings such as chemical fertilizer in a large number, owing to the utilization rate meansigma methods of nitrogen phosphorus is about 35% by crops, the nitrogen phosphorus of nearly 65% enters natural water by rainwater and irrigation water etc., causes the eutrophication of the water bodys such as pond, rural area.Therefore, solve agricultural nitrogen phosphorus pollution of area source problem, to reducing natural water eutrophication, there is highly important practical significance.
The removal to nitrogen phosphorus is realized by arranging nitrogen phosphorus adsorbent equipment nitrogen phosphorus adsorbent or adsorbent, but the adsorption effect of nitrogen phosphorus is not fairly obvious by adsorbent, clearance is about 40%, and remaining nitrogen phosphorus has then been directly discharged into natural water, and still water body is caused eutrophication pollution.And adsorbent needs to be continuously replenished, not only can not realize the recycling of nitrogen phosphorus but also cause the generation of additional pollutant matter, cause extra pollution and operation cost.
Artificial swamp denitrogenates phosphorus technology then by the structure function of manual simulation natural wetland.The physics in natural ecosystems and bio-cooperation is utilized to realize the removal of nitrogen phosphorus in agricultural drain, farmland nitrogen phosphorus substance can not only be effectively organized to enter natural water, prevent body eutrophication, and can pass through to make rational planning for and design, reach, with surrounding enviroment, the effect got along amiably and peacefully.It is disadvantageous in that nitrogen phosphorus substance is digested and assimilated by wetland and can not be recycled.In agricultural drain, nitrogen P elements proportion in agricultural nitrogen phosphorus fertilising is about 2/3, if this part all or part of reuse of nutrient mass-energy is to farmland, absorbs for crop, is then beneficial to reduce fertilising cost, has certain economic benefit.
Summary of the invention
This utility model is intended to solve the nitrogen phosphorus pollution of area source problem of south China rice terrace and provide a kind of part nutrient substance recoverable, save cost, and agricultural drain qualified discharge controls to utilize system and method with recovery of nitrogen and phosphorus to the rice terrace pollution of area source of natural water.
First purpose of the present utility model is to provide a kind of rice terrace pollution of area source and controls to utilize system, described system to be sequentially provided with water collecting unit, grid filtration unit, buffer cell, nitrogen phosphorus absorbing unit, artificial swamp, natural storing facilities of water with recovery of nitrogen and phosphorus；Wherein natural storing facilities of water recharges unit by water conservancy and is connected with nitrogen phosphorus absorbing unit；Being provided with the first current on-off control unit between described nitrogen phosphorus absorbing unit and artificial swamp, water conservancy is recharged and is provided with the second current on-off control unit between unit and nitrogen phosphorus absorbing unit.
Described first current on-off control unit is off when rice terrace is irrigated；Described second current on-off control unit is in connected state when irrigating, and is off when rice terrace draining.
In one embodiment, in described system, the draining of rice terrace is collected by water collecting unit, enters nature storing facilities of water successively after grid filtration unit, nitrogen phosphorus absorbing unit, artificial wetland treatment；When rice field needs to irrigate, the water in natural storing facilities of water flows through water conservancy and recharges unit successively back through nitrogen phosphorus absorbing unit, buffer cell, grid filtration unit, water collecting unit, reenters rice field.
In one embodiment, described water conservancy recharge unit by water pump with nature storing facilities of water be connected.
In one embodiment, described water collecting unit is the irrigation ditch in original rice field.When water paddy irrigation for water paddy irrigation, for paddy field draining when rainfall or draining, and the effect of dash adjustment flow velocity can be played when the water yield is big.
In one embodiment, described grid filtration unit includes coarse rack and fine fack, and close to water collecting unit is coarse rack.It is respectively used to intercept the rice field foreign material brought in rice terrace draining, it is prevented that follow-up process system is impacted.Grid needs to be periodically subject to labor cleaning, removes the foreign material intercepted, it is prevented that blocking escape canal.
In one embodiment, described grid filtration unit is made by the stainless (steel) wire of different pore size.
In one embodiment, described buffer cell is made up of at the stone of 6-14cm diameter.
In one embodiment, described buffer cell is made up of at the stone of about 10cm size, and current flow through from crack of stone, plays the cushioning effect to flow velocity.Certain thickness sandstone can be covered for planting applicable aquatic plant, such as Ligustrum quihoui etc., to reach the purpose beautified the environment and purify water in stone top liquid level above part.
In one embodiment, described nitrogen phosphorus absorbing unit is made up of zeolite and/or coal ash.
In one embodiment, the adsorption capacity of the adsorbing material that described nitrogen phosphorus absorbing unit uses is the bigger the better；The minimum amount of adsorbing material be rice terrace maximum draining complete time adsorbing material adsorbance not yet reach maximum adsorption value.
In one embodiment, described first current on-off control unit be can the sluice structure of Artificial Control or Electronic control, be used for blocking current and enter subsequent treatment facility and control to enter flow velocity.
In one embodiment, described artificial swamp is planted the nitrogen good Alternanthera philoxeroides of phosphorus assimilation effect and Herba Lythri Salicariae, if conditions permit can arrange one piece of region for planting Herba Eichhorniae in artificial swamp front portion, by the nitrogen phosphorus not adsorbed by nitrogen phosphorus absorbing unit in the Root Absorption water of three kinds of wetland plants, reduce the nitrogen and phosphorus content in water.
In one embodiment, described natural storing facilities of water is the pond manually built or natural pond, river, and drawing water for field irrigation is provided with the water pump for water conservancy irrigation in natural cistern.
In one embodiment, described water conservancy is recharged unit and is connected nature storing facilities of water and current on-off control unit, for the backwash of rice terrace irrigation and absorbing unit.
This utility model, the active adsorption of nitrogen phosphorus substance, utilization in rice terrace draining is achieved by water collecting unit, grid filtration unit, buffer cell, nitrogen phosphorus absorbing unit, artificial swamp, natural storing facilities of water, recharge unit by water conservancy to be redirected back into nitrogen phosphorus absorbing unit and make the nitrogen phosphorus generation desorption in adsorbent simultaneously, enter back into rice terrace to be utilized by Oryza sativa L. re-absorption, it is achieved that the recycling of the nutrient substance such as nitrogen phosphorus.
Compared with prior art, this utility model has the advantage that
1, adsorbed by material and plant absorption utilizes, while realizing the recycling of part nitrogen phosphorus substance, effectively reduce the nitrogen and phosphorus content in discharge water, while reducing natural water eutrophication probability of happening, realize the recycling of nutrient substance, reducing production cost, resource reutilization rate is more than 40%；
2, nitrogen phosphorus absorbing unit adopts the zeolite of productive life waste material coal ash and low cost as adsorbing material, has the effect of low cost and refuse reclamation；
3, water collecting unit adopt original irrigation of paddy fields irrigation canals and ditches, artificial swamp also can original beach, turf moor basis on transform, Facilities Construction is less costly；
4, artificial swamp and surrounding are got along amiably and peacefully, and can become water garden according to geographical Position Design, are realizing realizing on the basis that nitrogen phosphorus eliminates and the getting along amiably and peacefully of surrounding enviroment；
5, compared with eliminating irrigation technique with tradition nitrogen phosphorus, this utility model does not increase extra cost, has the feature of small investment, free maintenance management.
Accompanying drawing explanation
Fig. 1 is that a kind of rice terrace pollution of area source of the present utility model controls to utilize system diagram with recovery of nitrogen and phosphorus.
Detailed description of the invention
Embodiment 1 this utility model system
In conjunction with such as system diagram of the present utility model as shown in Figure 1, this utility model is carried out as detailed below:
Described system is sequentially provided with water collecting unit, grid filtration unit, buffer cell, nitrogen phosphorus absorbing unit, artificial swamp, natural storing facilities of water；Wherein natural storing facilities of water recharges unit by water conservancy and is connected with nitrogen phosphorus absorbing unit；Being provided with the first current on-off control unit between described nitrogen phosphorus absorbing unit and artificial swamp, water conservancy is recharged and is provided with the second current on-off control unit between unit and nitrogen phosphorus absorbing unit.
Described first current on-off control unit is in connected state when rice terrace draining, is off when rice terrace is irrigated；Described second current on-off control unit is in connected state when irrigating, and is off when rice terrace draining.
Described water conservancy is recharged unit and is connected with natural storing facilities of water by water pump.
Described grid filtration unit includes coarse rack and fine fack, the stainless (steel) wire of different pore size be made.
The operation principle of embodiment 2 this utility model system
When paddy field drainage, paddy field water is pooled to water collecting unit through irrigation ditch and focuses on, if on-the-spot unconditional, uses original irrigation of paddy fields irrigation canals and ditches as use of catchmenting, to reach the purpose of regulating water quality；Adopt original irrigation of paddy fields escape canal as water collecting unit, for collecting and temporarily storing paddy field drainage, be conducive to saving construction cost.
Paddy field drainage coarse rack in grid filtration unit filters out the large volume rubbish such as the weeds in water, filters out the fine impurities in discharge water through fine fack, it is prevented that follow-up buffer cell and absorbing unit are resulted in blockage；Grid filtration unit is made up of coarse rack and fine fack, grid adopts stainless (steel) wire to make, suitable aperture is selected to make thickness grid, for stopping rubbish and subtitle substance, prevent from follow-up buffering and absorbing unit are caused obstruction, the grid of multilamellar different pore size can be made as required, remove the purpose of garbage substance in water to reach to maximize；
For mild current, reduce water velocity, reduce the impact to nitrogen phosphorus absorbing unit, be provided with buffer cell.The buffered unit of free from admixture draining after grid filtration unit filters slows down water velocity, mild current, reduces water velocity most possibly, it is prevented that follow-up nitrogen phosphorus absorbing unit is caused water impact；Buffer cell adopts diameter at the stone of 10 cm as cushion, and water flows through crack of stone trickling, and after buffered unit, current tend towards stability, flows decrease, the absorption being more beneficial in water nitrogen phosphorus substance.
Being drained into nitrogen phosphorus absorbing unit after the mild flow velocity of buffered unit, the zeolite in absorbing unit and coal ash the nitrogen phosphorus substance in water is adsorbed, water velocity is more slow, and adsorbent is more big with the contact area of water, and adsorption effect is more good；In order to reducing the construction costs, improve practicality of the present utility model, adopt the nitrogen good zeolite of phosphorus adsorption effect and coal ash as adsorbent, less costly, it is more beneficial for promoting the use of.
After nitrogen phosphorus absorbing unit adsorbs, nitrogen phosphorus substance content in water declines about 40%, remaining nitrogen phosphorus substance is absorbed by follow-up constructed wetland plant, current are entered artificial swamp by absorbing unit through current on-off control unit, artificial swamp kind is implanted with Alternanthera philoxeroides and Herba Lythri Salicariae that nitrogen phosphorus has good absorption effect, can plant suitable quantity of water calabash if desired to improve nitrogen phosphorus absorbance in artificial swamp.In artificial swamp, current adopt up flow type mode low speed by artificial swamp, and in artificial swamp, the time of staying is more long, and nitrogen phosphorus absorbance is more high, reaches as high as more than 90%.
Current on-off control unit adopts water gate control in actual applications, for the break-make controlling current and artificial swamp and water conservancy is recharged between unit, opening the sluice between nitrogen phosphorus absorbing unit and artificial swamp when draining allows current by artificial swamp, closes nitrogen phosphorus absorbing unit and water conservancy is recharged the sluice between unit and prevented current entrance water conservancy from recharging unit.Then close the sluice between nitrogen phosphorus absorbing unit and artificial swamp during irrigation of paddy fields and block current entrance artificial swamp, open nitrogen phosphorus absorbing unit and water conservancy is recharged the sluice between unit and made irrigation water pass through nitrogen phosphorus absorbing unit entrance irrigation ditch.
The artificial swamp plantation nitrogen good Alternanthera philoxeroides of phosphorus assimilation effect and Herba Lythri Salicariae, if conditions permit can arrange one piece of region for planting Herba Eichhorniae in artificial swamp front portion, by the nitrogen phosphorus not adsorbed by nitrogen phosphorus absorbing unit in the Root Absorption water of three kinds of wetland plants, reduce the nitrogen and phosphorus content in water.Wherein Herba Eichhorniae is relatively strong to the absorbability of water Middle nutrition composition, but produces too fast, it is necessary to its growth scope of conservative control, it is to avoid cause biology to spread unchecked and new ecological hazard.The construction of artificial swamp can collaborative with surrounding enviroment regulation carry out, and artificial swamp builds up the form in a park, extends the draining time of staying in wetland substantially, be that people build a good living environment while realizing nitrogen phosphorus ligands.
Nitrogen phosphorus substance clearance in the paddy field drainage that artificial swamp is discharged to more than 90%, can meet natural water emission request, eutrophication will be caused to threaten natural water, thus arriving the purpose that rice field pollution of area source controls.
Natural storing facilities of water is the dry point of irrigation of paddy fields, when rice field hydropenia need to be irrigated, the current on-off control unit closed between absorbing unit and artificial swamp prevents aqueous reflux from entering artificial swamp, open water conservancy and recharge the current on-off control unit between unit and nitrogen phosphorus absorbing unit, from natural water, extracted irrigation water entrance water conservancy by the equipment of drawing water and recharge unit, and enter water collecting unit and irrigation of paddy fields irrigation canals and ditches through nitrogen phosphorus absorbing unit, buffer cell, grid filtration unit, it is achieved the irrigation to rice field.
When current are reverses through nitrogen phosphorus absorbing unit, nitrogen phosphorus adsorbent can carry out desorption reaction, is re-released in irrigation water by the nitrogen phosphorus substance of absorption, thus realizing the recycling of nitrogen phosphorus substance, reducing fertilising cost, improving the purpose of N,P use efficiency.The reuse ratio of nitrogen phosphorus accounts for 40% of the nitrogen and phosphorus content in raw emissions water, can save the nitrogen phosphorus fertilising cost of 40%, thus reaching the purpose of energy-saving and emission-reduction.
Embodiment described above is only for illustrating the technical scheme that this utility model is relevant, but not is limited；The professional and technical personnel of association area can modify according to technical scheme described in the utility model and realize, or partial parameters information therein carries out equivalent replacement；And the essential and technical scheme essence described in the utility model of these equivalents is identical.Therefore, this utility model is not limited to embodiment described herein, but the widest interest field consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a rice terrace pollution of area source controls to utilize system with recovery of nitrogen and phosphorus, it is characterised in that described system includes water collecting unit, grid filtration unit, buffer cell, nitrogen phosphorus absorbing unit, artificial swamp, natural storing facilities of water successively；Wherein natural storing facilities of water recharges unit by water conservancy and is connected with nitrogen phosphorus absorbing unit；Being provided with the first current on-off control unit between described nitrogen phosphorus absorbing unit and artificial swamp, water conservancy is recharged and is provided with the second current on-off control unit between unit and nitrogen phosphorus absorbing unit.
2. system according to claim 1, it is characterised in that described first current on-off control unit is in connected state when rice terrace draining, is off when rice terrace is irrigated；Described second current on-off control unit is in connected state when irrigating, and is off when rice terrace draining.
3. system according to claim 1, it is characterised in that described water conservancy is recharged unit and is connected with natural storing facilities of water by water pump.
4. system according to claim 1, it is characterised in that described water collecting unit is original irrigation of paddy fields escape canal.
5. system according to claim 1, it is characterised in that described grid filtration unit includes coarse rack and fine fack, the stainless (steel) wire of different pore size be made.
6. system according to claim 1, it is characterised in that described buffer cell is made up of at the stone of 6-14 centimetre diameter.
7. system according to claim 1, it is characterised in that described nitrogen phosphorus absorbing unit by zeolite and coal ash as adsorbate.
8. system according to claim 1, it is characterised in that plant in described artificial swamp and be implanted with plant.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521002954.2U CN205347101U (en) | 2015-12-07 | 2015-12-07 | Control of rice terrace non -point source pollution and nitrogen phosphorus recycle system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521002954.2U CN205347101U (en) | 2015-12-07 | 2015-12-07 | Control of rice terrace non -point source pollution and nitrogen phosphorus recycle system |
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| CN205347101U true CN205347101U (en) | 2016-06-29 |
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| CN201521002954.2U Active CN205347101U (en) | 2015-12-07 | 2015-12-07 | Control of rice terrace non -point source pollution and nitrogen phosphorus recycle system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105417867A (en) * | 2015-12-07 | 2016-03-23 | 江苏商达水务有限公司 | System and method for controlling non-point source pollution and recycling nitrogen and phosphorus of paddy fields |
| CN106745452A (en) * | 2016-12-30 | 2017-05-31 | 北京师范大学 | A kind of farmland nitrogen and phosphorus recovery device |
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2015
- 2015-12-07 CN CN201521002954.2U patent/CN205347101U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105417867A (en) * | 2015-12-07 | 2016-03-23 | 江苏商达水务有限公司 | System and method for controlling non-point source pollution and recycling nitrogen and phosphorus of paddy fields |
| CN105417867B (en) * | 2015-12-07 | 2018-06-15 | 江苏启德水务有限公司 | A kind of rice terrace pollution of area source control utilizes system and method with recovery of nitrogen and phosphorus |
| CN106745452A (en) * | 2016-12-30 | 2017-05-31 | 北京师范大学 | A kind of farmland nitrogen and phosphorus recovery device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 214000 Jiangsu city of Wuxi province Xishan economic and Technological Development Zone No. 2 Feng Wei Lu savera No. 1 107&108 Patentee after: Jiangsu Eic water Co., Ltd. Address before: 214000 Xishan Economic Development Zone, Wuxi, Furong Road No. 99, No., No. three Patentee before: Jiangsu Shangda Water Affair Co., Ltd. |
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| CP03 | Change of name, title or address |