CN101898832A - Compound type constructed wetland system - Google Patents
Compound type constructed wetland system Download PDFInfo
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- CN101898832A CN101898832A CN2009100573233A CN200910057323A CN101898832A CN 101898832 A CN101898832 A CN 101898832A CN 2009100573233 A CN2009100573233 A CN 2009100573233A CN 200910057323 A CN200910057323 A CN 200910057323A CN 101898832 A CN101898832 A CN 101898832A
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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
Abstract
The invention discloses a compound type constructed wetland system which is arranged in a region connected with at least one non-point source pollution receiving water body and comprises an subsurface flow wetland and a surface flow wetland, wherein the subsurface flow wetland and the surface flow wetland are artificially arranged, the subsurface flow wetland is positioned at the near end of each non-point source pollution receiving water body, and the surface flow wetland is arranged at one end of the subsurface flow wetland away from the non-point source pollution receiving water body. The compound type constructed wetland system not only controls agricultural non-point source pollution, but also realizes the cyclic utilization of water resources.
Description
Technical field
The present invention relates to a kind of artificial swamp, relate in particular to a kind of compound type constructed wetland system of controlling the agricultural area source water pollution.
Background technology
Along with the Chinese countryside expanding economy, a large amount of uses of chemical fertilizer, agricultural chemicals make widespread pollution from the overuse of fertilizers and pesticides in rural area become the matter of utmost importance that Chinese environmental pollutes.Pollution of area source is meant that dissolved and solid pollution substance are under rainfall (or snow melt) souring in atmosphere, ground or the soil, enter receiving water body by the runoff process and comprise river, lake, reservoir, waterbearing stratum and bay etc., cause body eutrophication or other forms of pollution.Principal pollutant that widespread pollution from the overuse of fertilizers and pesticides in rural area produces such as chemical fertilizer, agricultural chemicals, agrochemical, though a part can be absorbed by plant materials, but major part flows into surface water bodies such as river, lake by rainwash, causes the eutrophication of receiving water body, makes it lose due function of water body.
Therefore, being eager to seek a kind of suitable effective water technology handles widespread pollution from the overuse of fertilizers and pesticides in rural area.
Summary of the invention
The present invention will solve the technical problem of widespread pollution from the overuse of fertilizers and pesticides in rural area, and a kind of compound type constructed wetland system is provided.
In order to solve the problems of the technologies described above, compound type constructed wetland system of the present invention, be located in the zone that connects at least one pollution of area source receiving water body, the current wetland and the surface current wetland that comprise artificial setting, this current wetland is positioned at the near-end of each pollution of area source receiving water body, is provided with described surface current wetland at this current wetland away from an end of pollution of area source receiving water body.
Preferably, be provided with drainage and irrigation station near the described surface current wetland, this drainage and irrigation station is connected with this surface current wetland by water-transmission line, is used to extract the cleaning water that purified through artificial swamp as water source for irrigation.
When described drainage and irrigation station moved, the flow direction of the sewage in the pollution of area source receiving water body in this compound type constructed wetland system was first through current wetland, behind the surface current wetland, extracted out by drainage and irrigation station again; When drainage and irrigation station was out of service, the sewage in the pollution of area source receiving water body relied near the power hoisting device that is provided with the current wetland, is implemented in the uniflux in this compound type constructed wetland system, flows to another water body from this pollution of area source receiving water body.
Preferably, described compound type constructed wetland system is located in the zone that connects two or more pollution of area source receiving water bodies with surperficial water conservancy contact, the current wetland and the surface current wetland that comprise artificial setting, this current wetland is positioned at the near-end of each pollution of area source receiving water body, be provided with described surface current wetland at this current wetland away from an end of pollution of area source receiving water body, formation is the center with this surface current wetland, the compound type constructed wetland system of its both sides distribution current wetland.
Preferably, described current wetland comprises vertical current current wetland and horizontal flow current wetland, and the distribution of this current wetland is followed successively by vertical current current wetland, horizontal flow current wetland from the pollution of area source receiving water body to the surface current wetland.
The filler of described current wetland is made up of the filtrate of three kinds of different-grain diameters, and this filler divides three layers, and the particle diameter of upper, middle and lower-ranking filtrate increases successively.
The plantation plant of described current wetland comprises a kind of or any two or more combination in Canna generalis Bailey, Spiked Loosestrife, Rhizome of Grass leaf Sweelflag, wilson iris, the parasol grass.
Preferably, the bank kind in the zone of at least one pollution of area source receiving water body of described connection is implanted with submerged plant, to constitute the submerged plant purifying area, can play the effect that further purifies water.The submerged plant of plantation comprises a kind of or any two or more combination in eel grass, hydrilla verticillata, waterweed, the hornwort.
The plantation plant of described surface current wetland comprises a kind of or any two or more combination in reed, Scirpus tabernaemontani, the cattail.
Compound type constructed wetland system of the present invention, reasonable combination by current wetland and surface current wetland, the river water body that is subjected to widespread pollution from the overuse of fertilizers and pesticides in rural area is carried out effective purifying treatment, cleaning water after the processing provides clean water source for agricultural-food production, thereby realize the recycle of water resources, the present invention has not only administered widespread pollution from the overuse of fertilizers and pesticides in rural area, and has realized the green non-pollution agriculture production, also produces suitable landscape effect simultaneously.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is the residing site plan of compound type constructed wetland system in the embodiment of the invention 1;
Fig. 2 is the plane figure of compound type constructed wetland system in the embodiment of the invention 1;
Fig. 3 is the sectional view of the vertical current current wetland of the embodiment of the invention 1;
Fig. 4 is the sectional view of the horizontal flow current wetland of the embodiment of the invention 1;
Fig. 5 is the sectional view of the surface current wetland of the embodiment of the invention 1;
Fig. 6 is the sectional view on the fish shape island of the embodiment of the invention 1.
Among the figure: 1-makes up lateral retaining wall 43-water inlet pipe 44-rising pipe 45-filtrate 46-bedding mortar 47-geotextile 48-planting soil 7-fish shape island 71-timber 72-filtrate 73-planting soil in the outer lateral retaining wall 42-of wetland 2-Zhong Bei river 3-vertical current current wetland 4-horizontal flow current wetland 5-surface current wetland 6-submerged plant purifying area 7-fish shape island 31-filtrate 32-retaining cob brick wall 33-planting soil 34-geotextile 41-
Embodiment
The invention provides a kind of compound type constructed wetland system, be located in the zone that connects at least one pollution of area source receiving water body, the current wetland and the surface current wetland that comprise artificial setting, this current wetland is positioned at the near-end of each pollution of area source receiving water body, is provided with the surface current wetland at this current wetland away from an end of pollution of area source receiving water body.
Preferably, compound type constructed wetland system is located in the zone that connects two or more pollution of area source receiving water bodies with surperficial water conservancy contact, the current wetland and the surface current wetland that comprise artificial setting, this current wetland is positioned at the near-end of each pollution of area source receiving water body, is provided with described surface current wetland at this current wetland away from an end of pollution of area source receiving water body.
The plantation plant of current wetland comprises a kind of or any two or more combination in Canna generalis Bailey, Spiked Loosestrife, Rhizome of Grass leaf Sweelflag, wilson iris, the parasol grass.The plantation plant of surface current wetland comprises a kind of or any two or more combination in reed, Scirpus tabernaemontani, the cattail.
The surface current wetland is that waste water is from wetland surface current mistake, it and natural wetland are the most approaching, such artificial swamp has less investment, simple to operate, advantage such as working cost is low, but the less current wetland of hydraulic loading rate is that sewage is from the bottom of wetland surface current to bed of packings, can make full use of on the one hand the effect that the microbial film of filling surface growth, abundant root system and veneer of soil and filler dam etc., wastewater treatment efficiency and processing power are strengthened; On the other hand since current on the face of land with current downflow, have that good heat insulating, treatment effect are subjected to that weather effect is little, sanitary condition characteristics preferably, but the dried/waterflooding time that falls is longer, the control relative complex.
The filler of current wetland is made up of the filtrate of three kinds of different-grain diameters, and this filler divides three layers, and the particle diameter of upper, middle and lower-ranking filtrate increases successively, is respectively 0.5～1.2,1.8～2.4,3.0～3.8cm, and the total height of filler is 0.6～0.9m.
Compound type constructed wetland system of the present invention carries out reasonable combination to current wetland and surface current wetland, be about to current wetland and be located at the near-end of each pollution of area source receiving water body, sewage to receiving water body is efficiently handled earlier, for example the plant delivering oxygen of current wetland plantation arrives root district, bottom, form a lot of aerobic sub-districts in root district federation, nitrogen in the sewage carries out the nitrifying process of ammonia nitrogen under microbial process, simply be expressed as follows: NH
4 +→ NO
2 -→ NO
3 -At the position away from the root district, NO
3 -Owing to anaerobic environment is carried out denitrification process, thereby ammonia is removed with the form of gas.Calcium in the current wetland base material, magnesium and sewage phosphorus effect form precipitation, to remove phosphorus.The water of handling through current wetland is flow chart surface current wetland again, by the surface current wetland it is done further decontamination and handles, and as the reed of surface current wetland plantation phosphorus and nitrogen is all had very strong receptivity.Through the efficient processing of current wetland, handle through the surface current wetland more earlier, can effectively overcome the shortcoming of surface current wetland, can also strengthen the oxygen level that is used to irrigate water body simultaneously.
In preferred embodiment of the present invention, be provided with drainage and irrigation station near the surface current wetland, this drainage and irrigation station is connected with this surface current wetland by water-transmission line, is used to extract the cleaning water that purified through artificial swamp as water source for irrigation.Extract cleaning water by drainage and irrigation station, for sewage provides power from pollution of area source receiving water body flow chart surface current wetland.When drainage and irrigation station work moved, the flow direction of sewage was from the pollution of area source receiving water body, and the current wetland of flowing through arrives the surface current wetland again, is extracted by drainage and irrigation station at last.When drainage and irrigation station was out of service, the sewage in the pollution of area source receiving water body relied near the power hoisting device that is provided with the current wetland, is implemented in the uniflux in this compound type constructed wetland system, flows to another water body from this pollution of area source receiving water body.
In another preferred embodiment of the present invention, current wetland comprises vertical current current wetland and horizontal flow current wetland, and the distribution of current wetland is followed successively by vertical current current wetland, horizontal flow current wetland from the pollution of area source receiving water body to the surface current wetland.Sewage flows to the bottom of bed of packings from the wetland surface longitudinal in the vertical current current wetland, and a bed body is in undersaturated condition, and oxygen can enter artificial swamp by atmospheric diffusion and plant transmission.The nitrated ability of this vertical current current wetland is higher than the horizontal flow current wetland, can be used for handling the higher sewage of ammonia-nitrogen content, and its shortcoming is not as the horizontal flow current wetland to organic removal ability.The horizontal flow current wetland is compared with free flow surface constructed wetland, the hydraulic load and the pollution load of horizontal flow current wetland are big, removal effect to contamination indexs such as BOD (biochemical oxygen demand (BOD)), COD (chemical oxygen demand (COD)), heavy metals is good, and foul smelling and multiply the mosquitos and flies phenomenon seldom.The effect of the denitrogenation of horizontal flow current wetland, dephosphorization is not as the vertical current current wetland.Therefore, denitrogenate through vertical current current wetland dephosphorization earlier and prevent that algae from growing, remove organism through the horizontal flow current wetland again.
In another preferred embodiment of the present invention, the bank kind that connects the zone of at least one pollution of area source receiving water body is implanted with submerged plant, to constitute the submerged plant purifying area, plays the effect that further purifies water.The submerged plant of plantation comprises a kind of or any two or more combination in eel grass, hydrilla verticillata, waterweed, the hornwort.
Embodiment 1
Handle widespread pollution from the overuse of fertilizers and pesticides in rural area in conjunction with the artificial swamp of actual items case-modern agriculture garden, Qingpu, Shanghai and set forth the specific implementation process of compound type constructed wetland system of the present invention.Figure 1 shows that the residing site plan of compound type constructed wetland system in the modern agriculture garden, Qingpu, Shanghai City, rice field, vegetable plot are arranged in the garden, also have the intensive culture fish pond, there is certain widespread pollution from the overuse of fertilizers and pesticides in rural area, 5 the relative closure river courses (river, the Xihe River, shallow lake in Zhong Bei river, steaming Zhong He, the middle Nanhe River, the shallow lake) that are located in the depression in the garden, be the receiving water body of pollution of area source, compound type constructed wetland system is arranged in the river course that connects Zhong Bei river 2 and steam river 1.
As shown in Figure 2, this compound type constructed wetland system comprises that vertical current port stream wetland 3 (3 unit), horizontal flow current wetland 4 (also can claim ecological island, 4 unit, connect in twos) and surface current wetland 5, wherein, the number of unit of vertical current current wetland 3 and horizontal flow current wetland 4 can change according to actual place size and influent quality.The compound wet land system total area is 1044m
2, current wetland 600m wherein
2, horizontal-flow wetland 548m
2, surface current wetland 342m
2The sectional view of vertical current current wetland 3 as shown in Figure 3, sewage is from the bottom of current wetland surface current to bed of packings, bed of packings is surrounded by retaining cob brick wall 32, filler is made up of the filtrate 31 of three kinds of different-grain diameters, the filler total height is 0.9m, divide three layers of tiling, on, in, following three-layer filter particle diameter is respectively 0.5～1.2,1.8～2.4,3.0～3.8cm, shop one deck planting soil 33 above three-layer filter 31, be suitable for the waterplant of current wetland growth with plantation, as Canna generalis Bailey, Spiked Loosestrife, Rhizome of Grass leaf Sweelflag, wilson iris, parasol grass etc. are equipped with geotextile 34 between filtrate 31 and plain soil.The sectional view of horizontal flow current wetland 4 as shown in Figure 4, essential structure and vertical current current wetland are similar, it mainly is the difference of water distribution manner, horizontal flow current wetland 4 is crossed bed of packings because of sewage from an end horizontal flow, and vertical current current wetland 3 sewage flow to the bottom of bed of packings from the wetland surface longitudinal, in this embodiment of the present invention, the bed of packings of horizontal flow current wetland 4 is divided into two by outer lateral retaining wall 41 and interior lateral retaining wall 42, water inlet pipe 43 and rising pipe 44 pass outer lateral retaining wall 41 respectively and stretch into bed of packings, and this water inlet pipe 43 and rising pipe 44 are laid on the water-setting soil structure.Be filled with filtrate 45 in the bed of packings, in the bottom of bed of packings is the bedding mortar 46 that lime and sand-cement slurry are made, be covered with planting soil 48 above the filtrate 45, be used for planting aquatic plants, all be equipped with geotextile 47 between filtrate 45 and the planting soil 48 and between filtrate 45 and the bedding mortar 46.The sectional view of surface current wetland 5 is planted on the surface current wetland and is implanted with emergents such as reed, Scirpus tabernaemontani, cattail as shown in Figure 5, and sewage relies on stronger absorbed nitrogen, the phosphorus abilities of plant such as reed from surface current wetland surface current mistake, and sewage is made purifying treatment.Be provided with drainage and irrigation station 8 near the surface current wetland 5, be used to extract the cleaning water that purified through artificial swamp as water source for irrigation.Extract cleaning water by drainage and irrigation station 8, mobile the provide power of sewage from pollution of area source receiving water body flow chart surface current wetland 5 is provided.Near the drainage and irrigation station of this set surface current wetland, can not only be used for crop irrigation in the garden with purifying the cleaning water that reaches I class surface water standard, the more important thing is that the drainage by drainage and irrigation station has strengthened flowing of surface water body and shallow-layer undercurrent water body, promoted the cleaning action of the interior plant of artificial swamp polluted-water.
Preferably, compound type constructed wetland system of the present invention is also planted the river course bank and is implanted with the submerged plant (see figure 2), as eel grass, hydrilla verticillata, waterweed, hornwort etc., constitutes submerged plant purifying area 6, plays the effect that further purifies water.
Preferably, compound type constructed wetland system of the present invention also comprises fish shape island 7 (seeing Fig. 2 and Fig. 6), be positioned between horizontal flow current wetland 4 (ecological island) and the surface current wetland 5, fish shape island 7 is when having current to pass through, play and horizontal flow current wetland 4 similar functions, in this embodiment of the present invention, fish shape island 7 is enclosed the bed of packings of making by timber 71 and is formed, be filled with filtrate 72 in the bed of packings, cover planting soil 73 above the filtrate 72, be used for planting aquatic plants, the filtrate energy adsorption of nitrogen phosphorus heavy metal on fish shape island 7 etc., aquatic plants growth has also absorbed the nitrogen phosphorus in the water body, has the function of beautifying view with the plant of planting on the macrura reevesii shape island, aesthetic function is mainly played on whole fish shape island, has purification function simultaneously concurrently.
Above-mentioned compound type constructed wetland system hydraulic detention time is 3.5h, and hydraulic load is 16.9m
3D
-1When drainage and irrigation station is not worked, this compound type constructed wetland system can be realized the uniflux of river water body in the garden by power, as near the vertical current current wetland, water pump being installed, make this compound type constructed wetland system by water inlet (see figure 2) in river in steaming, through vertical current current wetland-horizontal flow current wetland-surface current wetland-horizontal flow current wetland-vertical current current wetland (power-lift), by the water outlet of Zhong Bei river, wherein also passed through the submerged plant purifying area, further purified water quality.
Compound type constructed wetland system is to the removal effect of different nutriments: the influence that the river river water quality changes in being steamed, and wet land system influent quality instability (seeing Table 1), the main water quality parameter variation range of intaking is total nitrogen TN0.25～0.62mgL
-1, total phosphorus TP0.10～0.19mgL
-1, chemical oxygen demand COD Mn8.1～11.0mgL
-1According to " water environment quality standard elementary item standard limited value " (GB3838-2002), this influent quality is in III～V class water.
Table 1 compound type constructed wetland system water-in and water-out change of water quality amplitude (mgL
-1)
The water inlet water body is after compound type constructed wetland system is handled, and nutritive substance obtains reduction in various degree, and the clearance of every water-quality guideline sees Table 2 in the water body.As known from Table 2, this compound type constructed wetland system to the clearance of indexs such as nitrate nitrogen, nitrous acid nitrogen, total phosphorus, chlorophyll a can reach 50% and more than, and to COD
Mn, ammonia-N removal rate is not then high, on average has only 16.8% and 18.9%.Water quality after the compound type constructed wetland system of flowing through is handled removes COD
MnOutside IV class water, all the other all reach II class water quality standard.Relative dispersion degree between 1,3,5,7,9,11 day water quality clearance of comparison and the average, discovery is except ammonia nitrogen, and the clearance of other indexs is the most approaching with average at 11 days all, as seen, this compound wet land system is after moving 10 days continuously, and is stable to the clearance trend of water quality.
Table 2 compound type constructed wetland system is to the clearance of each water-quality guideline
Compound type constructed wetland system can effectively be removed nutritive substances such as N, P, handles the widespread pollution from the overuse of fertilizers and pesticides in rural area water body of low pollution load, and total nitrogen, total tp removal rate can reach 44.1% and 49.5%, and effluent quality can improve 1～2 surface water quality grade than water inlet; But the clearance to organic substance is not high, only is 16.8%; Wet land system to the removal efficient of chlorophyll a up to 75.8%.
Above-mentioned treatment effect is to be 16.9m at hydraulic load
3D
-1, hydraulic detention time is to obtain under the condition of 3.5h, if pollution load strengthens, hydraulic detention time is elongated, and compound type constructed wetland system will be improved to the clearance of pollution substance.The wet land system of agricultural garden continuously operation after 10 days the removal trend to the water nutrition material stable.
Compound type constructed wetland system makes that heavy metal substance content declines to a great extent in the irrigation water, go out the upper limit that water concentration is significantly less than I class surface water standard, according to " greenhouse vegetable home environment criteria of quality evaluation " (HJ333-2006), water after the processing meets greenhouse vegetable irrigation water ambient quality standard fully, the construction of this compound type constructed wetland system has not only realized Ecological Compensation for widespread pollution from the overuse of fertilizers and pesticides in rural area, also can realize the recycle of water resources, have broad application prospects.
The above embodiment has only expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. compound type constructed wetland system, it is characterized in that, be located in the zone that connects at least one pollution of area source receiving water body, the current wetland and the surface current wetland that comprise artificial setting, this current wetland is positioned at the near-end of each pollution of area source receiving water body, is provided with described surface current wetland at this current wetland away from an end of pollution of area source receiving water body.
2. compound type constructed wetland system according to claim 1, it is characterized in that, be provided with drainage and irrigation station near the described surface current wetland, this drainage and irrigation station is connected with this surface current wetland by water-transmission line, is used to extract the cleaning water that purified through artificial swamp as water source for irrigation.
3. compound type constructed wetland system according to claim 2, it is characterized in that when described drainage and irrigation station moved, the flow direction of the sewage in the pollution of area source receiving water body in this compound type constructed wetland system was earlier through current wetland, behind the surface current wetland, extract out again by drainage and irrigation station.
4. compound type constructed wetland system according to claim 2, it is characterized in that, when described drainage and irrigation station is out of service, sewage in the pollution of area source receiving water body relies near the power hoisting device that is provided with the current wetland, be implemented in the uniflux in this compound type constructed wetland system, flow to another water body from this pollution of area source receiving water body.
5. compound type constructed wetland system according to claim 1 and 2, it is characterized in that, described compound type constructed wetland system is located in the zone that connects two or more pollution of area source receiving water bodies with surperficial water conservancy contact, the current wetland and the surface current wetland that comprise artificial setting, this current wetland is positioned at the near-end of each pollution of area source receiving water body, be provided with described surface current wetland at this current wetland away from an end of pollution of area source receiving water body, formation is the center with this surface current wetland, the compound type constructed wetland system of its both sides distribution current wetland.
6. compound type constructed wetland system according to claim 1, it is characterized in that, described current wetland comprises vertical current current wetland and horizontal flow current wetland, and its distribution is followed successively by vertical current current wetland, horizontal flow current wetland from the pollution of area source receiving water body to the surface current wetland.
7. compound type constructed wetland system according to claim 1 is characterized in that, the bank kind in the zone of at least one pollution of area source receiving water body of described connection is implanted with submerged plant, to constitute the submerged plant purifying area.
8. compound type constructed wetland system according to claim 1 is characterized in that, the plantation plant of described current wetland comprises a kind of or any two or more combination in Canna generalis Bailey, Spiked Loosestrife, Rhizome of Grass leaf Sweelflag, wilson iris, the parasol grass.
9. compound type constructed wetland system according to claim 1 is characterized in that, the plantation plant of described surface current wetland comprises a kind of or any two or more combination in reed, Scirpus tabernaemontani, the cattail.
10. compound type constructed wetland system according to claim 7 is characterized in that, described submerged plant comprises a kind of or any two or more combination in eel grass, hydrilla verticillata, waterweed, the hornwort.
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| CN2009100573233A CN101898832A (en) | 2009-05-26 | 2009-05-26 | Compound type constructed wetland system |
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| CN2009100573233A CN101898832A (en) | 2009-05-26 | 2009-05-26 | Compound type constructed wetland system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860489A (en) * | 2015-06-10 | 2015-08-26 | 新乡市蓝海环境工程有限公司 | Powerless biological sewage treatment system |
| CN105621617A (en) * | 2016-01-07 | 2016-06-01 | 长沙理工大学 | Comprehensive purifying device for road runoff |
| CN107055970A (en) * | 2017-06-01 | 2017-08-18 | 杨水红 | A kind of multi-class culture Man-made wetland processing system |
| CN111115835A (en) * | 2020-01-15 | 2020-05-08 | 中国水利水电科学研究院 | Natural river sewage control system and method and design method |
-
2009
- 2009-05-26 CN CN2009100573233A patent/CN101898832A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860489A (en) * | 2015-06-10 | 2015-08-26 | 新乡市蓝海环境工程有限公司 | Powerless biological sewage treatment system |
| CN105621617A (en) * | 2016-01-07 | 2016-06-01 | 长沙理工大学 | Comprehensive purifying device for road runoff |
| CN107055970A (en) * | 2017-06-01 | 2017-08-18 | 杨水红 | A kind of multi-class culture Man-made wetland processing system |
| CN111115835A (en) * | 2020-01-15 | 2020-05-08 | 中国水利水电科学研究院 | Natural river sewage control system and method and design method |
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Application publication date: 20101201 |