CN102502966A - Manual hydroponic wetland device with nitrogen-phosphorus nutritive salt enrichment function - Google Patents
Manual hydroponic wetland device with nitrogen-phosphorus nutritive salt enrichment function Download PDFInfo
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- CN102502966A CN102502966A CN2011103387722A CN201110338772A CN102502966A CN 102502966 A CN102502966 A CN 102502966A CN 2011103387722 A CN2011103387722 A CN 2011103387722A CN 201110338772 A CN201110338772 A CN 201110338772A CN 102502966 A CN102502966 A CN 102502966A
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Abstract
The invention relates to a manual hydroponic wetland device with a nitrogen-phosphorus nutritive salt enrichment function, which comprises a water inlet adjusting area, a hydroponic plant area, a matrix nitrogen enrichment area, an intermediate adjusting area, a matrix phosphorus enrichment area, a water outlet adjusting area and a discharged water collection tank, which are arranged sequentially according to the water flowing direction. The matrix nitrogen enrichment area is arranged at the bottom of a tank below the hydroponic plant area. Compared with the prior art, the manual hydroponic wetland device which integrates a matrix reinforced nitrogen-phosphorus removing function and manual hydroponic wetland is a novel combined purification system, the nitrogen-phosphorus removing function of the matrixes is maintained while characteristics and advantages of the hydroponic wetland are fully maintained, and the device is evidently advantageous in treatment of pollutants in high-flow low-pollution water of inflow rivers, urban tail water or the like.
Description
Technical field
The present invention relates to a kind of device of environmental protection technical field, specifically relate to a kind of artificial water culture wetland that function is removed in the nitrogen and phosphorous nutrient enrichment that has.
Background technology
Nitrogen and phosphorous nutrient is the key ecological that causes body eutrophication, and therefore, nitrogen and phosphorous nutrient is significant for body eutrophication control in the reduction sewage.Lake external source nitrogen and phosphorous nutrient is mainly derived from water outlet, rural area pollution of area source and the ingoing river etc. of municipal sewage plant, and this type water quality is particularly suitable for adopting artificial swamp to carry out Ecological Disposal.
Artificial swamp (Constructed Wetland; CW) refer to build up pond or groove with manual work; The antiseep water-resisting layer is laid in the bottom surface, fills the hypothallus of certain depth, planting aquatic plants; Utilize physics, chemistry, the biological synergetic effect of matrix, plant, mikrobe that sewage is purified, be divided into surface current artificial wetland, horizontal drowned flow artificial wet land and vertical subsurface flow wetland according to the drainage flow mode.Surface current artificial wetland (surface flow constructed wetland) refers to sewage more than surface, matrix top layer, the artificial swamp of body feed-water end horizontal flow phase water side from the pond.Horizontal drowned flow artificial wet land (horizontal subsurface flow constructed wetland) refers to sewage below surface, matrix top layer, the artificial swamp of body feed-water end horizontal flow phase water side from the pond.Vertical subsurface flow wetland (vertical subsurface flow constructed wetland) refers to the vertical artificial swamp through pond body mesostroma layer of sewage.Shortcomings such as although undercurrent and surface current artificial wetland are the technology that widely adopts at present, surface current artificial wetland's treatment effect is relatively poor, and underflow type artificial wet land then exists hydraulic load low, is prone to stop up, and cost is higher.
In recent years, a kind of artificial water culture wetland that has purification of water quality ability and ecological and economic benefit output concurrently (claim again water plough the plant filtration method) is able to develop.Its characteristics are not filling substrate; Stem stalk or the root system flourishing through waterplant form efficient root system filtering layer with filtration removals such as the suspension pollutents in the water; Under plant and the mikrobe acting in conjunction organism and nutritive salt are removed, formed an ecological purification system that constitutes by waterplant, hydrocoles and mikrobe.It is low thereby handle the big weakness of area that the low polluted river water of the same water yield need be built that artificial water culture wetland had both overcome surface current wetland unit surface processing efficiency, overcome undercurrent type wetland again simultaneously and be easy to stop up the problem high with construction cost.Thereby the water planting artificial swamp is suitable for the big occasions of the processing water yield such as ingoing river, urban wastewater.
Yet the shortcoming of common artificial water culture wetland is also very obvious, and promptly these purify the growth conditions that mechanism all depends on plant, and the growth conditions of plant depends on plant again to the nutraceutical effective absorption of lower concentration in the water.Confirm that according to big quantity research waterplant is limited to the removal of nitrogen phosphorus, therefore for the ingoing river or urban wastewater of big flow, low nutritive salt, also need consider effect by nutritive salt concentration type matrix.
Summary of the invention
The object of the invention is exactly to provide a kind of for the defective that overcomes above-mentioned prior art existence matrix is strengthened nitrogen phosphorus removal function and artificial water culture wetland organic assembling; Become a kind of novel combination type purification system; Both kept matrix to remove the effect of nitrogen phosphorus; While has fully kept the characteristics and the advantage of water culture wetland, has the artificial water culture wetland device with nitrogen and phosphorous nutrient enrichment function of clear superiority for pollutent in big flow such as processing ingoing river or urban wastewater, the low-pollution water.
The object of the invention can be realized through following technical scheme: a kind of artificial water culture wetland device with nitrogen and phosphorous nutrient enrichment function; It is characterized in that; This device comprises water inlet regulatory region, hydroponic plant district and matrix nitrogen enrichment region, intermediate regulations district, matrix phosphorus enrichment region, water outlet regulatory region, the water outlet water collecting basin that sets gradually by water (flow) direction, and described matrix nitrogen enrichment region places the bottom in the pond, below in hydroponic plant district.
Described device is a rectangular parallelepiped groove shape, and its long-width ratio is (10～3): 1, and the degree of depth is 45～75cm.
The top of described water inlet regulatory region one side pool wall is provided with water inlet pipe, and absolute altitude is not less than into water regulatory region liquid level at the bottom of the pipe of this water inlet pipe; The opposite side pool wall is provided with perforated wall a, and the eyelet of perforated wall a is laid in below 1/3～1/2 water surface.
Described hydroponic plant district kind is implanted with the waterplant of economically valuable or landscape value, and this waterplant has flourishing root system, and the root length below the water surface can reach 10～20cm; Described matrix nitrogen enrichment region is positioned at the below in hydroponic plant district, and matrix nitrogen enrichment region is provided with the matrix that thickness is not less than 20cm, and this matrix is layed in the bottom of device, and the material of matrix is the ammonia nitrogen absorption material, and its voidage is greater than 30%.
The preferred 20-40cm of the thickness of described matrix, described ammonia nitrogen absorption material comprises zeolite, vermiculite etc.
Be provided with perforated wall b between described intermediate regulations district and hydroponic plant district and the matrix nitrogen enrichment region, be provided with overflow weir between intermediate regulations district and the matrix phosphorus enrichment region; Described matrix phosphorus enrichment region is filled with matrix, and the height of this hypothallus is higher than water outlet regulatory region liquid level 2-5cm, and the material of matrix is the phosphorus sorbing material, and its voidage is greater than 30%.
The top eyelet of described perforated wall b is low concordant with the water surface, and described overflow weir adopts triangle sawtooth weir; Described phosphorus sorbing material comprises the xonotlite of one type of hydrated calcium silicate etc.
Be provided with perforated wall c between described water outlet regulatory region and the matrix phosphorus enrichment region; The water outlet regulatory region connects the water outlet water collecting basin through Discharging bent-tube; Water outlet is flowed out from the bottom pipe of Discharging bent-tube, gets into the water outlet water collecting basin through the bend pipe overflow that makes progress, and described water outlet water collecting basin sidewall is provided with water shoot.
The top eyelet of described perforated wall c and matrix phosphorus enrichment region hypothallus height maintain an equal level, and the upflow tube open height of described Discharging bent-tube is lower than matrix phosphorus enrichment region hypothallus height 2-5cm.
Described device is handled through antiseepage, is included in apparatus surface and applies waterproof paint, and current get into the water inlet regulatory region from top; Through perforated wall and be advanced into the matrix nitrogen enrichment region of the hydroponic plant district and the bottom on top; Get into the intermediate regulations district through perforated wall afterwards, get into matrix phosphorus enrichment region through overflow weir again, get into the water outlet regulatory region through perforated wall at last; And, get into water collecting basin through bend pipe overflow upwards again through bottom rising pipe feeding water outlet water collecting basin.Matrix described in the present invention is ammonia nitrogen absorption material and phosphorus sorbing material, comprises ammonia nitrogen and phosphorus sorbing material of some natural silicate mineral and synthetic etc.
Compared with prior art, the present invention has kept the advantage of artificial water culture wetland, at first, has avoided the shortcoming of traditional drowned flow artificial wet land easy blocking, and the not high shortcoming of conventional surface person who lives in exile worker wetland hydraulic load; Secondly, water culture wetland helps management, is convenient to plant cultivating, harvesting, and the conversion of control condition; The 3rd has advantageous advantage aspect the development and use of water planting economic plants, can suit measures to local conditions to develop economic plants or the landscape plant that is fit to local development, can adjust flexibly in the season that is not suitable for aquatic economic plants growth.
Nitrogen phosphorus concentration type matrix and waterplant are relatively independent separately to play a role, and does not disturb mutually, helps bringing into play matrix to the enrichment of nitrogen with to the inrichment of phosphorus, and is convenient to carry out the optimization of operational conditions.For example, nitrogen enrichment region and phosphorus enrichment region can realize according to the actual requirements matrix replacing, select for use etc., do not receive the restriction of plant growing condition.In addition, nitrogen enrichment region and phosphorus enrichment region can be adjusted the position flexibly according to the matrix own characteristic, also can take hybrid mode etc.
No matter be the hydroponic plant district, or nitrogen phosphorus matrix enrichment region, all help forming the ecosystem separately, the comprehensive purifying of water quality is produced synergy, matrix nitrogen, phosphorus enrichment region can be distinguished and compensate the deficiency that the hydroponic plant district absorbs water body nitrogen phosphorus effectively.The root system of plant ecosystem is except direct absorption nitrogen and phosphorous nutrient; Its root system mikrobe also all produces good Water purification to organism, nitrogen phosphorus etc. in the water; Plant metabolism can also play the effect of carrying dissolved oxygen to water body simultaneously; Nitrification to keeping denitrogenation matrix district benefits, so matrix nitrogen enrichment region is positioned at the below in hydroponic plant district, helps forming the complete Water purification process to nitrogen with the hydroponic plant district.For the unavailable phosphorus in hydroponic plant district; Then can obtain final solution through matrix phosphorus enrichment region; Water quality is greatly improved through the Water purification of hydroponic plant district and matrix nitrogen enrichment region simultaneously; Influence to phosphorus enrichment matrix in the former water also drops to minimally, directly contacts the work-ing life that has prolonged matrix more with phosphorus enrichment matrix than former water.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
Embodiment 1
As shown in Figure 1, this artificial water culture wetland device comprises water inlet pipe 1 according to water (flow) direction, water inlet regulatory region 2, perforated wall a3; Hydroponic plant district 4 and matrix nitrogen enrichment region 5, perforated wall b6, intermediate regulations district 7, overflow weir 8; Matrix phosphorus enrichment region 9, perforated wall c10, water outlet regulatory region 11; Discharging bent-tube 12, water outlet water collecting basin 13, water shoot 14.Matrix nitrogen enrichment region 5 places 4 belows, hydroponic plant district.
Artificial water culture wetland device is the rectangular slot shape, and device is handled through antiseepage, and long-width ratio is 5: 1, and the depth of water is 60cm, and total surfaceloadingrate scope is at 0.5～1.0m
3/ m
2.d.
Hydroponic plant district 4 is the zone of the following 30cm of the water surface, and its length accounts for 70% of device length overall.Waterplant is transplanted through cuttage, can use the field planting basket or the perforation cystose is fixed plant.Carry out periodical reaping according to the plant-growth cycle, keep neck enough more than the water surface during harvesting and do length.
The stromal thickness of matrix nitrogen enrichment region 5 is 30cm, and the hypothallus porosity is greater than 30%.
The hypothallus thickness of matrix phosphorus enrichment region 9 is 60cm, and the hypothallus porosity is greater than 30%.
The eyelet of perforated wall a3 is laid in below 1/3～1/2 water surface, gets into hydroponic plant district 4 to keep a current part, and a part is through matrix nitrogen enrichment region.
The eyelet of perforated wall b6 evenly is laid in below the water surface.
The eyelet of perforated wall c10 is evenly laid, and top eyelet height and matrix phosphorus enrichment region hypothallus height maintain an equal level.
Overflow weir 8 adopts the sawtooth V-notch weir, and its current liquid level is 60cm.
Discharging bent-tube 12 upflow tube open heights are lower than matrix phosphorus enrichment region hypothallus height 2cm, can required bend pipe quantity be set according to the practical situation needs.
The height of water shoot 14 is confirmed according to discharging liquid level practical situation.
The working process of this enforcement is following:
As shown in Figure 1, this artificial water culture wetland groove is handled through antiseepage, and the tail water of certain municipal sewage plant or natural water body micro-polluted water flow in the water inlet equalizing tank 2 through water inlet pipe 1; Behind perforated wall a3, and be advanced into hydroponic plant district 4 and matrix nitrogen enrichment region 5, mater convolvulus or other aquatic cash crop are planted for 4 kinds by the hydroponic plant district; Matrix nitrogen enrichment region 5 is laid natural zeolite or artificial synthetic zeolite's material, and current pass through two functional zone up and down, get into intermediate regulations district 7 through perforated wall b6; Get into matrix phosphorus enrichment region 9 through overflow weir 8 again; Matrix phosphorus enrichment region adopts the hydrated calcium silicate synthetic materials, current submergence reason matrix, and water outlet gets into water outlet regulatory region 11 through perforated wall c10; Get into water outlet water collecting basin 13 through Discharging bent-tube 12 at last, and from water shoot 14 dischargings.
Nitrogen in the low-pollution water on access to plant top, phosphorus nutrition obtain the purification of waterplant in hydroponic plant district 4; The place that its flourishing root system of while provides mikrobe to perch; Help comprehensive purifying to water quality; Waterplant photosynthesis can be carried dissolved oxygen for water body, keeps the hydroponic plant district than the sufficient dissolved oxygen level.Ammonia nitrogen in the low-pollution water of the bottom of access to plant is purified in the process of nitrogen enrichment matrix such as zeolite of flowing through; Pass through long-time running simultaneously; The matrix top layer has aerobic nitrifier; Its internal layer has anoxic denitrifying bacterium, and the microbial ecosystem of formation also produces active effect to the removal of nitrogen.
Water purification through waterplant district 4 and matrix nitrogen enrichment region 5; Phosphorus purifies through matrix phosphorus enrichment region 9 in the water, and this territorial matrix is the xonotlite of one type of hydrated calcium silicate, through the crystallizing-dephosphorizing principle; Low phosphorus in the water is enriched in stromal surface, forms the form of hydroxyethylidene diphosphonic acid salt.This kind matrix can also produce residual nitrogen in the water is carried out the enrichment absorption through after the regular hour, forms the struvite of one type of magnesium ammonium phosphate.
Before processing, reach state sewage emission standard though present embodiment is implemented handled municipal sewage plant tail water, press the measurement of surface water standard and still be bad V class water, main contamination index is total nitrogen 15mg/L, ammonia nitrogen 4mg/L, total phosphorus 0.8mg/L, COD60mg/L.Through the effect of this device, the clearance of water outlet total nitrogen reaches 80%, and ammonia nitrogen removal frank reaches 80%, and total tp removal rate can reach 90%, and the COD clearance can reach 65%.In addition natural little polluted river water purification is shown, to water quality total nitrogen 2mg/L, total phosphorus 0.5mg/L, after purifying, nitrogen removal rate is 80%, total tp removal rate is 80%.
Embodiment 2
A kind of artificial water culture wetland device with nitrogen and phosphorous nutrient enrichment function; This device is rectangular parallelepiped groove shape; Its long-width ratio is 10: 1, and the depth of water is 45cm, and rectangular parallelepiped groove shape device is separated through perforated wall and overflow weir and is a plurality of districts: be followed successively by into water regulatory region, hydroponic plant district and matrix nitrogen enrichment region, intermediate regulations district, matrix phosphorus enrichment region, water outlet regulatory region, water outlet water collecting basin by water (flow) direction; Described matrix nitrogen enrichment region places the below in hydroponic plant district, the i.e. bottom in pond.
The top of described water inlet regulatory region one side pool wall (the current upper reaches one side) is provided with water inlet pipe, and absolute altitude is not less than into water regulatory region liquid level at the bottom of the pipe of this water inlet pipe; The opposite side pool wall is provided with perforated wall a, and the eyelet of perforated wall a is laid in below 1/2 water surface, is evenly distributed with the water distribution that keeps body current direction hydroponic plant district, pond and matrix nitrogen enrichment region.
Described hydroponic plant district kind is implanted with the waterplant of economically valuable or landscape value; Like mater convolvulus etc.; This waterplant has flourishing root system; Root length below the water surface can reach 10～20cm, directly absorbs nitrogen phosphorus in the water on the one hand, and the Root Distribution mikrobe can produce comprehensive Water purification to water quality simultaneously.Also the water body dissolved oxygen levels is produced positive influence through the plant metabolism effect simultaneously.The selection of hydroponic plant can be developed needs plant economic crops (like mater convolvulus etc.) or landscape plant according to reality; Described matrix nitrogen enrichment region is positioned at the below in hydroponic plant district, and matrix nitrogen enrichment region is provided with the matrix of thickness 20cm, and this matrix is layed in the bottom of device, and the material of matrix is the ammonia nitrogen absorption material, like zeolite, vermiculite etc.Hypothallus plays the effect of direct absorption ammonia nitrogen on the one hand, and simultaneously, along with the passing of working time, its surface attachment produces the microflora that purifies water, and further strengthen the nitration denitrification denitrogenation effect, and heterotrophic microorganism is to organic Water purification.
Be provided with perforated wall b between described intermediate regulations district and hydroponic plant district and the matrix nitrogen enrichment region, be provided with overflow weir between intermediate regulations district and the matrix phosphorus enrichment region; Described matrix phosphorus enrichment region is filled with matrix, and the material of matrix is the phosphorus sorbing material, and like the xonotlite of one type of hydrated calcium silicate, its voidage is greater than 30%.The top eyelet of described perforated wall b is concordant with the water surface, and described overflow weir adopts the sawtooth V-notch weir, and its current liquid level is 45cm.
Be provided with perforated wall c between described water outlet regulatory region and the matrix phosphorus enrichment region, the water outlet regulatory region connects the water outlet water collecting basin through Discharging bent-tube, and water outlet is flowed out from the bottom pipe of Discharging bent-tube, gets into the water outlet water collecting basin through the bend pipe overflow that makes progress.The top eyelet of described perforated wall c is concordant with water outlet regulatory region liquid level, and the upflow tube open height of described Discharging bent-tube is lower than matrix phosphorus enrichment region hypothallus height 2cm.
Described water outlet water collecting basin sidewall is provided with water shoot.
Described device is handled through antiseepage; Current get into the water inlet regulatory region from top, through perforated wall and be advanced into the matrix nitrogen enrichment region of hydroponic plant district and the bottom on top, afterwards through perforated wall entering intermediate regulations district; Get into matrix phosphorus enrichment region through overflow weir again; Get into the water outlet regulatory region through perforated wall at last, and feed the water outlet water collecting basin, get into water collecting basin through bend pipe overflow upwards again through the bottom rising pipe.Matrix described in the present invention is ammonia nitrogen absorption material and phosphorus sorbing material, comprises ammonia nitrogen and phosphorus sorbing material of some natural silicate mineral and synthetic etc.
Embodiment 3
A kind of artificial water culture wetland device with nitrogen and phosphorous nutrient enrichment function, this device is rectangular parallelepiped groove shape, and its long-width ratio is 3: 1, and the depth of water is 75cm, and absolute altitude is not less than into water regulatory region liquid level at the bottom of the pipe of water inlet pipe; The eyelet of perforated wall a is laid in below 1/2 water surface; Matrix nitrogen enrichment region is provided with the matrix of thickness 40cm; The hypothallus height of described matrix phosphorus enrichment region is higher than water outlet regulatory region liquid level 5cm; The top eyelet of perforated wall b is concordant with the water surface, and overflow weir adopts the sawtooth V-notch weir, and its current liquid level is 75cm.The top eyelet of perforated wall c is concordant with water outlet regulatory region liquid level, and the upflow tube open height of described Discharging bent-tube is lower than matrix phosphorus enrichment region hypothallus height 5cm.All the other are with embodiment 1.
Claims (10)
1. artificial water culture wetland device with nitrogen and phosphorous nutrient enrichment function; It is characterized in that; This device comprises water inlet regulatory region, hydroponic plant district and matrix nitrogen enrichment region, intermediate regulations district, matrix phosphorus enrichment region, water outlet regulatory region, the water outlet water collecting basin that sets gradually by water (flow) direction, and described matrix nitrogen enrichment region places the bottom in the pond, below in hydroponic plant district.
2. a kind of artificial water culture wetland device with nitrogen and phosphorous nutrient enrichment function according to claim 1 is characterized in that, described device is a rectangular parallelepiped groove shape, and its long-width ratio is (10～3): 1, and the degree of depth is 45～75cm.
3. a kind of artificial water culture wetland device with nitrogen and phosphorous nutrient enrichment function according to claim 1 is characterized in that the top of described water inlet regulatory region one side pool wall is provided with water inlet pipe, and absolute altitude is not less than into water regulatory region liquid level at the bottom of the pipe of this water inlet pipe; The opposite side pool wall is provided with perforated wall a, and the eyelet of perforated wall a is laid in below 1/3～1/2 water surface.
4. a kind of artificial water culture wetland device according to claim 1 with nitrogen and phosphorous nutrient enrichment function; It is characterized in that; Described hydroponic plant district kind is implanted with the waterplant of economically valuable or landscape value; This waterplant has flourishing root system, and the root length below the water surface can reach 10～20cm; Described matrix nitrogen enrichment region is positioned at the below in hydroponic plant district, and matrix nitrogen enrichment region is provided with the matrix that thickness is not less than 20cm, and this matrix is layed in the bottom of device, and the material of matrix is the ammonia nitrogen absorption material, and its voidage is greater than 30%.
5. a kind of artificial water culture wetland device with nitrogen and phosphorous nutrient enrichment function according to claim 4 is characterized in that, the preferred 15-30cm of the thickness of described matrix, and described ammonia nitrogen absorption material comprises zeolite, vermiculite.
6. a kind of artificial water culture wetland device according to claim 1 with nitrogen and phosphorous nutrient enrichment function; It is characterized in that; Be provided with perforated wall b between described intermediate regulations district and hydroponic plant district and the matrix nitrogen enrichment region, be provided with overflow weir between intermediate regulations district and the matrix phosphorus enrichment region; Described matrix phosphorus enrichment region is filled with matrix, and the height of this hypothallus is higher than water outlet regulatory region liquid level 2-5cm, and the material of matrix is the phosphorus sorbing material, and its voidage is greater than 30%.
7. a kind of artificial water culture wetland device with nitrogen and phosphorous nutrient enrichment function according to claim 6 is characterized in that the top eyelet of described perforated wall b is concordant with the water surface, and described overflow weir adopts triangle sawtooth weir; Described phosphorus sorbing material comprises the xonotlite of one type of hydrated calcium silicate.
8. a kind of artificial water culture wetland device according to claim 1 with nitrogen and phosphorous nutrient enrichment function; It is characterized in that; Be provided with perforated wall c between described water outlet regulatory region and the matrix phosphorus enrichment region, the water outlet regulatory region connects the water outlet water collecting basin through Discharging bent-tube, and water outlet is flowed out from the bottom pipe of Discharging bent-tube; Bend pipe overflow through making progress gets into the water outlet water collecting basin, and described water outlet water collecting basin sidewall is provided with water shoot.
9. a kind of artificial water culture wetland device according to claim 8 with nitrogen and phosphorous nutrient enrichment function; It is characterized in that; The top eyelet of described perforated wall c and matrix phosphorus enrichment region hypothallus height maintain an equal level, and the upflow tube open height of described Discharging bent-tube is lower than matrix phosphorus enrichment region hypothallus height 2-5cm.
10. a kind of artificial water culture wetland device with nitrogen and phosphorous nutrient enrichment function according to claim 1 is characterized in that, described device is handled through antiseepage, is included in apparatus surface and applies waterproof paint.
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Cited By (6)
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| CN102874933A (en) * | 2012-10-30 | 2013-01-16 | 周振民 | Composite biological vermiculite modular system for town sewage treatment |
| CN103159324A (en) * | 2013-03-22 | 2013-06-19 | 上海交通大学 | Composite constructed wetland used for low pollution water purification treatment of farmlands and villages |
| CN105906063A (en) * | 2016-05-17 | 2016-08-31 | 亿利首建生态科技有限公司 | Artificial wetland system and method for treating wastewater containing nitrogen and phosphor with artificial wetland system |
| CN106745761A (en) * | 2016-11-28 | 2017-05-31 | 四川君和环保股份有限公司 | Process the improved surface artificial wetland of agricultural surface runoff pollutant |
| CN109006446A (en) * | 2018-08-30 | 2018-12-18 | 长沙市新节点机械科技有限责任公司 | The double-deck abnormity multi-functional tube and its application in artificial swamp greening |
| CN114149083A (en) * | 2021-11-26 | 2022-03-08 | 哈尔滨工业大学（深圳） | Plant carbon source based novel composite artificial wetland system and application thereof |
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| CN106745761A (en) * | 2016-11-28 | 2017-05-31 | 四川君和环保股份有限公司 | Process the improved surface artificial wetland of agricultural surface runoff pollutant |
| CN109006446A (en) * | 2018-08-30 | 2018-12-18 | 长沙市新节点机械科技有限责任公司 | The double-deck abnormity multi-functional tube and its application in artificial swamp greening |
| CN114149083A (en) * | 2021-11-26 | 2022-03-08 | 哈尔滨工业大学（深圳） | Plant carbon source based novel composite artificial wetland system and application thereof |
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