CN110776217A - Farmland irrigation drainage purifier based on microbial community - Google Patents
Farmland irrigation drainage purifier based on microbial community Download PDFInfo
- Publication number
- CN110776217A CN110776217A CN201911245723.7A CN201911245723A CN110776217A CN 110776217 A CN110776217 A CN 110776217A CN 201911245723 A CN201911245723 A CN 201911245723A CN 110776217 A CN110776217 A CN 110776217A
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- 230000002262 irrigation Effects 0.000 title claims abstract description 46
- 238000003973 irrigation Methods 0.000 title claims abstract description 46
- 230000000813 microbial effect Effects 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 158
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 61
- 238000000746 purification Methods 0.000 claims abstract description 53
- 238000004062 sedimentation Methods 0.000 claims abstract description 26
- 230000007423 decrease Effects 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000010865 sewage Substances 0.000 abstract description 49
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 239000010840 domestic wastewater Substances 0.000 description 5
- 239000003621 irrigation water Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000009193 crawling Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a farmland irrigation drainage and purification device based on microbial communities, which comprises a rainwater drainage and irrigation device and a domestic water drainage and irrigation device, wherein the rainwater drainage and irrigation device comprises a rainwater collection pool and a water delivery channel, a filter screen II is arranged in the water delivery channel, the domestic water drainage and irrigation device comprises a filter pool, a sedimentation pool, an activated carbon tank and a biological purification pool which are sequentially connected, the bottom surface of the filter pool is in a step shape and sequentially decreases progressively, meanwhile, the tail end of each step is provided with the filter screen I, a motor is arranged in the biological purification pool to drive a rotating runner, the periphery of the runner is fixedly connected with a water containing tank, a water pump III is arranged between the biological purification pool and a farmland, the water inlet end of the water pump III is provided with a water inlet pipe II communicated with the biological purification pool, and the water outlet end. The invention has the advantages that: the water and the rainwater purified by the microbial community of the urban domestic sewage are used in farmland irrigation, so that the water resource is saved.
Description
Technical Field
The invention relates to the technical field of farmland irrigation water purification devices, in particular to a farmland irrigation drainage water purification device based on a microbial community.
Background
In order to ensure the normal growth of crops and increase the yield of the crops, the farmland needs to be irrigated and watered frequently, the traditional farmland irrigation watering method is to irrigate by pumping nearby river water through a water pump, but many farmlands do not have river water, so that water is required to be found through other modes for irrigation, at present, the country advocates water conservation, daily domestic water is directly drained, a large amount of waste of sewage resources is caused, and the problem that a large amount of domestic sewage generated in our cities is used for irrigation of the farmland after biological treatment is urgently needed to be solved.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the technical defects and provide a farmland irrigation drainage purification device based on a microbial community, so that water and rainwater purified by the microbial community in urban domestic sewage are used for farmland irrigation, and water resources are saved.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a farmland irrigation drainage purification device based on a microbial community comprises a rainwater drainage irrigation device and a domestic water drainage irrigation device, wherein the rainwater drainage irrigation device comprises a rainwater collection pool and a water delivery channel, one end of the water delivery channel is communicated with a water outlet of the rainwater collection pool, the other end of the water delivery channel is communicated with a farmland, a filter screen II is arranged in the water delivery channel, the domestic water drainage irrigation device comprises a filter tank, a sedimentation tank, an activated carbon tank and a biological purification tank which are sequentially connected, the bottom surface of the filter tank is in a step shape and sequentially decreases in a descending manner, a filter screen I is arranged at the tail end of each step, the sedimentation tank is arranged at the water outlet of the filter tank, a first water pump is arranged between the sedimentation tank and the activated carbon tank, a first water inlet pipe communicated with the upper part of the sedimentation tank is arranged at the water inlet end of the first water pump, a first water outlet pipe connected with the, be equipped with water pump two between activated carbon tank and the biological purification pond, activated carbon tank's bottom is equipped with the drain pipe, water pump two's the end of intaking is put through with the drain pipe mutually, water pump two's play water end is equipped with the outlet pipe two with biological purification pond upper portion switch-on, be equipped with motor area pivoted runner in the biological purification pond, runner border rigid coupling has the flourishing basin of being no less than one, be equipped with water pump three between biological purification pond and the farmland, water pump three's the end of intaking is equipped with the inlet tube two with biological purification pond intercommunication, water pump three's play water end is equipped with the outlet pipe three with the farmland connection.
Compared with the prior art, the invention has the advantages that: a rainwater drainage irrigation device and a domestic water drainage irrigation device are arranged in a farmland concentration area far away from river water, a large amount of rainwater under nature is concentrated and stored in a rainwater collection pool, when the farmland needs irrigation, a water outlet of the rainwater collection pool can be opened, the rainwater flows to nearby farmland through a water delivery channel for water supply and irrigation, meanwhile, sundries in the rainwater are blocked by a filter screen II, so that the rainwater supplied for farmland irrigation is cleaner, meanwhile, in seasons with drought and less rainwater, domestic wastewater except excrement in families of people flows to a municipal sewage pipe network in urban underground cities and flows to a set filter pool through the municipal sewage pipe network in urban underground cities, a plurality of filter screens I in the filter pool filter out larger sundries in the domestic wastewater, and meanwhile, the contact area between the domestic wastewater and air is increased in the downward flowing process of each layer through the step-decreasing design, the oxygen content in the domestic sewage is improved, aerobic microbial communities in the domestic sewage are propagated in an accelerated manner, the self-purification capacity of the domestic sewage is improved, the domestic sewage is suitable for aerobic biological treatment and purification because the content of organic matters in the domestic sewage is the largest, the primarily self-purified domestic sewage flows into the sedimentation tank, small impurities in the domestic sewage are precipitated to the bottom, the impurities in the sewage at the upper part of the sedimentation tank are few, then the clean sewage at the upper part of the sedimentation tank is pumped into the activated carbon tank through the first water pump, the activated carbon in the activated carbon tank further adsorbs impurities and peculiar smell in the sewage, the sewage purified by the activated carbon is pumped into the biological purification tank through the second water pump through the drain pipe, the rotating wheel in the biological purification tank continuously rotates for 360 degrees under the driving of the motor, so that the sewage in the biological purification tank is lifted and falls under the action of the water containing tank, increase the area of contact of sewage in the biological purification pond again with the air, thereby improve the oxygen content in the sewage, make the aerobic microbial community in the sewage obtain a large amount of reproduction, quick enrichment, accelerate the decomposition of organic matter in the domestic sewage, improve domestic sewage's self-purification speed, make water pump three take out from the biological purification pond and for the water of farmland irrigation comparatively clean, utilize rainwater and urban domestic sewage to provide irrigation water for keeping away from the concentrated farmland of river water above, make waste water changing waste into valuables, the reutilization of water resource, the water economy resource.
Preferably, the water delivery channel downward sloping is arranged, and higher one end and collection rain pond delivery port intercommunication, filter screen two is equipped with 2, and is located the both ends of water delivery channel respectively for the rainwater is through the natural required water of comparatively clean irrigation that provides for the farmland of water delivery channel of downward sloping, saves the expense of mechanical transmission.
Preferably, the bottom surface of filtering ponds divide into three-order degressive ladder in proper order, the upper end of sedimentation tank is the open mode, and is the same with the step height of the terminal lowest position of filtering ponds for when bold debris filter comparatively totally in the domestic sewage, increase the area of contact of domestic sewage and air, improve the oxygen content, thereby improve self-purification ability.
Preferably, the lower part rigid coupling of activated carbon tank has the baffle, the upper end of baffle is equipped with the active carbon district, and the baffle lower extreme is equipped with the district of straining water, install the filter cap on the baffle, the bottom surface in the district of straining water is conical, the drain pipe rigid coupling is at the bottom surface middle part in the district of straining water, and activated carbon tank inner structure is comparatively simple, realizes easily.
Preferably, the number of the water containing grooves is four, and the included angle between the connecting lines from two adjacent water containing grooves to the circle center of the rotating wheel is 90 degrees, so that the contact area and time between domestic sewage and air are further increased, the oxygen content in the domestic sewage is increased, and the self-purification capacity of the sewage is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of a microbial community-based farmland irrigation drainage purification device of the present invention.
As shown in the figure: 1. the device comprises a filter tank, 2, a sedimentation tank, 3, an activated carbon tank, 4, a biological purification tank, 5, a rain collecting tank, 6, a water delivery channel, 7, a first water pump, 8, a second water pump, 9, a third water pump, 10, a first filter screen, 11, a second filter screen, 12, a first water inlet pipe, 13, a first water outlet pipe, 14, a partition plate, 15, a filter cap, 16, an activated carbon area, 17, a water filtering area, 18, a water outlet pipe, 19, a second water outlet pipe, 20, a rotating wheel, 21, a water containing tank, 22, a second water inlet pipe, 23 and a third water outlet pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A farmland irrigation drainage purification device based on a microbial community comprises a rainwater drainage irrigation device and a domestic water drainage irrigation device, wherein the rainwater drainage irrigation device comprises a rainwater collection pool 5 and a water delivery channel 6, one end of the water delivery channel 6 is communicated with a water outlet of the rainwater collection pool 5, the other end of the water delivery channel is communicated with a farmland, a filter screen II 11 is arranged in the water delivery channel 6, the domestic water drainage irrigation device comprises a filter tank 1, a sedimentation tank 2, an activated carbon tank 3 and a biological purification tank 4 which are sequentially connected, the bottom surface of the filter tank 1 is in a step shape and sequentially decreases in a descending manner, a filter screen I10 is arranged at the tail end of each step, a sedimentation tank 2 is arranged at a water outlet of the filter tank 1, a water pump I7 is arranged between the sedimentation tank 2 and the activated carbon tank 3, a water inlet pipe I12 communicated with the upper part of the sedimentation tank 2 is arranged at a water inlet end of the water pump I7, a water outlet end of the water pump I7 is, a water pump II 8 is arranged between the activated carbon tank 3 and the biological purification tank 4, a drain pipe 18 is arranged at the bottom of the activated carbon tank 3, the water inlet end of the water pump II 8 is communicated with the drain pipe 18, the water outlet end of the water pump II 8 is provided with a water outlet pipe II 19 communicated with the upper part of the biological purification tank 4, a motor is arranged in the biological purification tank 4 to drive a rotating wheel 20 to rotate, at least one water containing groove 21 is fixedly connected around the wheel 20, a water pump III 9 is arranged between the biological purification tank 4 and a farmland, the water inlet end of the water pump III 9 is provided with a water inlet pipe II 22 communicated with the biological purification tank 4, the water outlet end of the water pump III 9 is provided with a water outlet pipe III 23 connected with the farmland, the water pump I7, the water pump II 8, the water pump III 9 and the motor are all independently connected with an external power supply through leads, the water pump II 8 is arranged below the, meanwhile, the outer walls of the filtering tank 1, the sedimentation tank 2 and the biological purification tank 4 are provided with crawling ladders, so that the water level and the condition can be observed through the crawling ladders, sediment in the sedimentation tank needs to be cleaned regularly, and the specific time is determined according to the experience of field workers.
6 downward sloping arrangements of water delivery channel, and higher one end and 5 delivery ports intercommunication in collection rain pond, two 11 filter screens are equipped with 2, and are located the both ends of water delivery channel 6 respectively.
The bottom surface of filtering ponds 1 divide into three-order degressive ladder in proper order, the upper end of sedimentation tank 2 is the open mode, and is the same with the step height of the terminal lowest position of filtering ponds 1, is located the filter screen one on the three not co-altitude step simultaneously, and along with the step reduces in proper order, the mesh number of filter screen one is bigger and bigger.
The lower part rigid coupling of activated carbon tank 3 has baffle 14, the upper end of baffle 14 is equipped with activated carbon district 16, and 14 lower extremes of baffle are equipped with the district 17 of straining water, install on the baffle 14 and filter cap 15, the bottom surface in 17 of straining water district is conical, the bottom surface middle part in 17 of straining water district of drain pipe 18 rigid coupling.
The number of the water containing grooves 21 is four, and an included angle between connecting lines from two adjacent water containing grooves 21 to the circle center of the rotating wheel 20 is 90 degrees.
When the invention is implemented concretely, a rainwater drainage irrigation device and a domestic water drainage irrigation device are arranged in a farmland concentration area far away from river water, a large amount of natural rainwater is concentrated and stored in a rainwater collection pool, when the farmland needs to be irrigated, a water outlet of the rainwater collection pool can be opened, rainwater automatically flows to a nearby farmland through a water delivery channel which is arranged obliquely downwards, water supply irrigation is carried out on the farmland, meanwhile, sundries in the rainwater are blocked by two filter screens at two ends, wherein the mesh number of the second filter screen at one end close to the farmland is larger, so that the rainwater for the farmland irrigation is cleaner, meanwhile, in a season with less drought rainwater, domestic wastewater except excrement at home is uniformly flowed into an urban underground municipal sewage pipe network and flows into a set filter pool through the urban underground municipal sewage pipe network, and the larger sundries in the domestic wastewater are filtered by the first filter screens with sequentially increasing mesh numbers in the filter pool, meanwhile, the step decreasing design increases the contact area with the air in the process that the domestic sewage flows downwards in each layer, improves the oxygen content in the domestic sewage, accelerates the propagation of aerobic microbial communities in the domestic sewage, improves the self-purification capacity of the domestic sewage, and is suitable for aerobic biological treatment and purification because the domestic sewage contains most organic matters, the primarily self-purified domestic sewage flows into a sedimentation tank, so that smaller impurities in the domestic sewage are precipitated to the bottom, the sewage impurities on the upper part of the sedimentation tank are less, then the cleaner sewage on the upper part of the sedimentation tank is pumped into an activated carbon tank through a first water pump, the activated carbon in the activated carbon tank further adsorbs the impurities and peculiar smell in the sewage, the sewage purified by the activated carbon enters a water filtering area through a filtering cap and is pumped into a biological purification tank through a second water pump through a drain pipe, runner in the biological purification pond is continuous 360 degrees rotations under the drive of motor, make sewage in the biological purification pond mention and fall under the effect of 4 evenly distributed's water containing groove, increase the area of contact of sewage and air in the biological purification pond again, thereby improve the oxygen content in the sewage, make the aerobic microbial community in the sewage obtain a large amount of reproduction, quick enrichment, accelerate the decomposition of organic matter in the domestic sewage, improve domestic sewage's self-purification speed, make water pump three take out for the water of field irrigation from the biological purification pond comparatively clean, utilize rainwater and urban domestic sewage to provide irrigation water for keeping away from the concentrated of river water above, make waste water changing waste into valuables farmland, the reutilization of water resource, water economy resource.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a farmland irrigation drainage purifier based on microbial community, includes rainwater drainage irrigation equipment and domestic water drainage irrigation equipment, its characterized in that: the rainwater drainage irrigation device comprises a rainwater collection pool (5) and a water delivery channel (6), one end of the water delivery channel (6) is communicated with a water outlet of the rainwater collection pool (5), the other end of the water delivery channel is communicated with a farmland, a filter screen II (11) is arranged in the water delivery channel (6), the domestic water drainage irrigation device comprises a filter pool (1), a sedimentation pool (2), an activated carbon tank (3) and a biological purification pool (4) which are sequentially connected, the bottom surface of the filter pool (1) is in a step shape and sequentially decreases in a descending manner, a filter screen I (10) is arranged at the tail end of each step, the sedimentation pool (2) is arranged at the water outlet of the filter pool (1), a water pump I (7) is arranged between the sedimentation pool (2) and the activated carbon tank (3), a water inlet pipe I (12) communicated with the upper part of the sedimentation pool (2) is arranged at the water inlet end of the water pump I (7), a water outlet pipe I (13) connected with the water inlet of the activated carbon, be equipped with two (8) water pumps between activated carbon tank (3) and biological purification pond (4), the bottom of activated carbon tank (3) is equipped with drain pipe (18), the end of intaking of two (8) water pumps is put through with drain pipe (18) mutually, the play water end of two (8) water pumps is equipped with two (19) outlet pipes that put through with biological purification pond (4) upper portion, it takes pivoted runner (20) to be equipped with the motor in biological purification pond (4), runner (20) border rigid coupling has flourishing basin (21) of being no less than one, be equipped with three (9) water pumps between biological purification pond (4) and the farmland, the end of intaking of three (9) water pumps is equipped with two (22) inlet tubes that communicate with biological purification pond (4), the play water end of three (9) water pumps is equipped with outlet pipe three (23) of being connected with the farmland.
2. The microbial community-based farmland irrigation drainage purification device of claim 1, wherein: water delivery channel (6) downward sloping is arranged, and higher one end and collection rain pond (5) delivery port intercommunication, filter screen two (11) are equipped with 2, and are located the both ends of water delivery channel (6) respectively.
3. The microbial community-based farmland irrigation drainage purification device of claim 1, wherein: the bottom surface of the filtering tank (1) is divided into three steps which are sequentially decreased, the upper end of the sedimentation tank (2) is in an open state, and the height of the upper end of the sedimentation tank is the same as that of the step at the lowest position of the tail end of the filtering tank (1).
4. The microbial community-based farmland irrigation drainage purification device of claim 1, wherein: the lower part rigid coupling of activated carbon tank (3) has baffle (14), the upper end of baffle (14) is equipped with activated carbon district (16), and baffle (14) lower extreme is equipped with and strains water district (17), install on baffle (14) and filter cap (15), the bottom surface of straining water district (17) is conical, drain pipe (18) rigid coupling is in the bottom surface middle part of straining water district (17).
5. The microbial community-based farmland irrigation drainage purification device of claim 1, wherein: the number of the water containing grooves (21) is four, and the included angle between the connecting lines from two adjacent water containing grooves (21) to the circle center of the rotating wheel (20) is 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911245723.7A CN110776217A (en) | 2019-12-07 | 2019-12-07 | Farmland irrigation drainage purifier based on microbial community |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911245723.7A CN110776217A (en) | 2019-12-07 | 2019-12-07 | Farmland irrigation drainage purifier based on microbial community |
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| CN110776217A true CN110776217A (en) | 2020-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113371890A (en) * | 2021-07-23 | 2021-09-10 | 东北农业大学 | Control and nitrogen and phosphorus recovery device for preventing farmland water and soil loss and pesticide pollution |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193087A (en) * | 2014-07-25 | 2014-12-10 | 浩蓝环保股份有限公司 | Catalytic oxidation slow percolation nitrogen and phosphorus removal device and method |
| CN207775974U (en) * | 2018-01-13 | 2018-08-28 | 银广厦集团有限公司 | A kind of rainwater and domestic water recycle device |
| CN109179716A (en) * | 2018-10-11 | 2019-01-11 | 嘉兴永森建设有限公司 | A kind of sewage disposal system |
| CN211111611U (en) * | 2019-12-07 | 2020-07-28 | 生态环境部南京环境科学研究所 | Farmland irrigation drainage purifier based on microbial community |
-
2019
- 2019-12-07 CN CN201911245723.7A patent/CN110776217A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193087A (en) * | 2014-07-25 | 2014-12-10 | 浩蓝环保股份有限公司 | Catalytic oxidation slow percolation nitrogen and phosphorus removal device and method |
| CN207775974U (en) * | 2018-01-13 | 2018-08-28 | 银广厦集团有限公司 | A kind of rainwater and domestic water recycle device |
| CN109179716A (en) * | 2018-10-11 | 2019-01-11 | 嘉兴永森建设有限公司 | A kind of sewage disposal system |
| CN211111611U (en) * | 2019-12-07 | 2020-07-28 | 生态环境部南京环境科学研究所 | Farmland irrigation drainage purifier based on microbial community |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113371890A (en) * | 2021-07-23 | 2021-09-10 | 东北农业大学 | Control and nitrogen and phosphorus recovery device for preventing farmland water and soil loss and pesticide pollution |
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