CN214880707U - Filtering sedimentation tank of ecological wetland - Google Patents
Filtering sedimentation tank of ecological wetland Download PDFInfo
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- CN214880707U CN214880707U CN202120277015.8U CN202120277015U CN214880707U CN 214880707 U CN214880707 U CN 214880707U CN 202120277015 U CN202120277015 U CN 202120277015U CN 214880707 U CN214880707 U CN 214880707U
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Abstract
The utility model relates to a filtering sedimentation tank of ecological wetland, including filtering sedimentation tank body, first baffle, the second baffle that the interval set up is fixed with in the filtering sedimentation tank body, and first baffle, second baffle divide into filter chamber, flocculation chamber, sedimentation chamber in the filtering sedimentation tank body, and the filter chamber top communicates there is the inlet tube, and one side intercommunication on sedimentation chamber upper portion has the outlet pipe, and the intercommunication has the connecting pipe between the upper portion of flocculation chamber and the bottom of filter chamber, is equipped with the water pump on the connecting pipe, and the overflow hole has been seted up on the upper portion of second baffle; the inside top of filter chamber is fixed with filter equipment, and the inside below of filter chamber is provided with the biological filter layer, and the inside top of flocculation chamber is provided with mixing arrangement, and the inside cleaning device that still is provided with of flocculation chamber. Can carry out effectual preliminary treatment to sewage, remove the solid waste of aquatic to through flocculation and precipitation, secondary deposit, remove the impurity of aquatic, the filter precipitation is effectual, can in time clear up the precipitate, promotes the filter precipitation effect.
Description
Technical Field
The utility model belongs to the technical field of water treatment, especially, relate to a filtration sedimentation tank of ecological wetland.
Background
As a water area ecosystem, the ecological wetland can absorb, fix and transform nutrient substances in soil and water and degrade toxic pollutants through the action of aquatic plants and chemical and biological processes, and has the important functions of purifying water and reducing environmental pollution. In recent years, with the increasing awareness of environmental protection, the technology of sewage purification treatment has also made remarkable progress. As a new sewage treatment method, compared with the traditional methods of chemical treatment, salvage treatment, aeration treatment, machine treatment and the like, the artificial ecological wetland is widely applied due to the advantages of low cost, low energy consumption, convenient maintenance, simple process, good water quality purification effect and the like.
The artificial ecological wetland is a technology for treating sewage and sludge by using the physical, chemical and biological triple synergistic action of soil, artificial medium, plants and microorganisms in the process of flowing along a certain direction by using sewage and sludge which are controllably dosed to the artificially constructed wetland on the ground similar to the marshland which is artificially constructed and controlled to operate. The action mechanism of the plant nutrient solution comprises the actions of adsorption, detention, filtration, oxidation reduction, precipitation, microbial decomposition, transformation, plant shielding, residue accumulation, transpiration moisture and nutrient absorption and various animals. In order to ensure the treatment effect of the artificial ecological wetland, a filtration and sedimentation tank is usually arranged at the water inlet section of the artificial ecological wetland to pretreat sewage. However, the filtering sedimentation tank for pretreating sewage in the prior art has the defects of poor filtering sedimentation effect and inconvenient cleaning of sediments due to unreasonable structural design, so that impurities in the filtering sedimentation tank easily reach a saturated state, and the sedimentation effect of sewage is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an ecological wetland's filtration sedimentation tank for solve among the prior art and be used for carrying out the filtration sedimentation tank of preliminary treatment to sewage because structural design is unreasonable, there is the filtration precipitation effect poor, the inconvenient clearance of precipitate, and then has influenced the technical problem of the precipitation effect of sewage.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the filtering sedimentation tank comprises a filtering sedimentation tank body, wherein a first partition plate and a second partition plate which are arranged at intervals are fixed inside the filtering sedimentation tank body, the first partition plate and the second partition plate divide the inside of the filtering sedimentation tank body into three independent cavities which are respectively a filtering chamber, a flocculation chamber and a sedimentation chamber, the top of the filtering chamber is communicated with a water inlet pipe, one side of the upper part of the sedimentation chamber is communicated with a water outlet pipe, a connecting pipe is communicated between the bottom of the filtering chamber and the upper part of the flocculation chamber, a water pump is arranged on the connecting pipe, and an overflow hole is formed in the upper part of the second partition plate; a filtering device for filtering solid garbage is fixedly connected above the inside of the filtering chamber, a biological filtering layer is arranged below the inside of the filtering chamber, a mixing device for mixing a flocculating agent and sewage is arranged above the inside of the flocculation chamber, and a cleaning device for cleaning sediments at the bottom of the flocculation chamber is also arranged inside the flocculation chamber; the mixing device comprises a mounting frame fixedly connected to one side of the top of the flocculation chamber, a vertical downward-arranged mixed medicine tank is fixedly connected to the mounting frame, the mixed medicine tank is of an upper opening and a lower opening and is of a hollow barrel structure, the top end of the mixed medicine tank is positioned outside the flocculation chamber and is fixedly connected with the mounting frame, the bottom end of the mixed medicine tank extends to the upper part inside the flocculation chamber, the mixed medicine tank is divided into an upper part and a lower part which are respectively a medicine adding area positioned above and a mixing area positioned below, the inner diameter of the mixing area is larger than that of the medicine adding area, a vertical downward-arranged medicine adding pipe is fixedly connected to the inner wall of the upper part of the medicine adding area, openings are formed in the upper end and the lower end of the medicine adding pipe, one end of the connecting pipe, which deviates from the filter chamber, extends to the inside of the flocculation chamber and is communicated with the lower part of the medicine adding area, the connecting pipe is positioned below the bottom of the medicine adding pipe, and a horizontally-arranged buffer plate is fixedly connected to the inner wall of the top of the mixing area, the uniform distribution has the hole of permeating water on the buffer board, and the inside from the top down of mixed zone fixedly connected with is a plurality of baffling boards that crisscross setting from top to bottom in proper order, and the baffling board is located the below of buffer board.
Preferably, filter equipment includes the rose box of fixed connection in the inside top of filter chamber, the uncovered setting in rose box top, the rose box bottom is fixed with the filter screen that has the downward slope setting, the auger that fixed connection has the upward slope to set up between the bottom of filter screen bottom and rose box one side, the lower part and the rose box of auger are inside to be linked together, the top of auger extends to the filter chamber outside, fixedly connected with L type support frame on the lateral wall of filter chamber, auger fixed mounting is on L type support frame, be located and offer the drain that is used for discharging rubbish on the bottom of the outside auger of filter chamber.
Preferably, the biological filter layer comprises a zeolite layer, a medical stone layer and a limestone layer which are arranged from top to bottom in sequence, wherein the particle size of the zeolite is larger than that of the medical stone, and the particle size of the medical stone is larger than that of the limestone.
Preferably, cleaning device includes the motor of fixed mounting at flocculation chamber top intermediate position, the output shaft of motor is connected with the pivot of vertical downward setting through the shaft coupling transmission, the pivot extends to the inside below of flocculation chamber, the inside below fixedly connected with arc base of undercut of flocculation chamber, the periphery of pivot lower part is fixed with a plurality of and is used for scraping the scraper blade of getting deposit on the arc base inner wall, the scraper blade is laminated mutually with the inner wall of arc base, the bottom intercommunication of arc base has row miscellaneous pipe, arrange and be equipped with the valve on the miscellaneous pipe.
Preferably, the lower part inside the settling chamber is fixedly connected with a W-shaped groove for storing sand, the bottom of the W-shaped groove is communicated with a sand discharge pipe, and the sand discharge pipe is provided with a sand discharge valve.
Preferably, the top fixed connection in the sedimentation tank inside has the filter of level setting, and the equipartition has the filtration hole on the filter, and the height that highly is higher than the outlet pipe of filter just is less than the height in overflow hole.
The utility model has the advantages that: by arranging the filtering chamber, the flocculation chamber and the settling chamber, the sewage is subjected to filtering, flocculation and settling and secondary settling in sequence, so that solid garbage and impurities in the sewage are fully precipitated and separated, the filtering and settling effect is improved, the burden of subsequent artificial ecological wetland treatment is reduced, and the sewage treatment efficiency is improved; the solid garbage in the sewage is filtered and separated in time by arranging the filtering device, so that the content of the garbage in the sewage is reduced; by arranging the cleaning device, the sediment accumulated on the inner wall of the flocculation chamber is cleaned in time, so that the influence on the sewage treatment effect caused by accumulation of a large amount of sediment at the bottom of the flocculation chamber due to long-term use is avoided, the running load of subsequent treatment equipment is reduced, and the sewage treatment effect is improved; and through setting up mixing arrangement, carry out abundant mixture to flocculating agent and sewage, mixing arrangement's installation space is little, need not to set up power drive mechanism, reduces the energy consumption, and does not have wearing and tearing, reduces use cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Reference numerals: 1-filtering sedimentation tank body, 2-first baffle, 3-second baffle, 4-filter chamber, 5-flocculation chamber, 6-sedimentation chamber, 7-inlet pipe, 8-outlet pipe, 9-connecting pipe, 10-water pump, 11-overflow hole, 12-mounting bracket, 13-mixing cartridge, 14-adding medicine area, 15-mixing area, 16-adding medicine pipe, 17-buffer board, 18-permeable hole, 19-baffle plate, 20-filter box, 21-filter screen, 22-packing auger, 23-L type support frame, 24-drain outlet, 25-drain pipe, 26-zeolite layer, 27-medical stone layer, 28-stone limestone layer, 29-motor, 30-rotating shaft, 31-arc base, 32-scraper, 33-impurity discharge pipe, 34-W type groove, 35-sand discharge pipe, 36-filter plate, 37-filter hole.
Detailed Description
As shown in fig. 1, the utility model discloses a filter sedimentation tank body 1, filter sedimentation tank body 1 inside is fixed with first baffle 2 that the interval set up, second baffle 3, first baffle 2, the equal vertical setting of second baffle 3 is inside filtering sedimentation tank body 1, first baffle 2, second baffle 3 will filter sedimentation tank body 1 inside and divide into three independent cavity, be filter chamber 4 respectively, flocculation chamber 5, sedimentation chamber 6, the top intercommunication of filter chamber 4 has inlet tube 7, one side intercommunication on 6 upper portions of sedimentation chamber has outlet pipe 8, inlet tube 7, all be provided with the valve on the outlet pipe 8, outlet pipe 8 is linked together with the water inlet department of artificial ecological wetland. A connecting pipe 9 is communicated between the bottom of the filtering chamber 4 and the upper part of the flocculation chamber 5, a water pump 10 is arranged on the connecting pipe 9, and an overflow hole 11 is arranged on the upper part of the second clapboard 3. The inside top fixedly connected with of filter chamber 4 is used for filtering the filter equipment of solid waste, and the biological filter layer has been laid to the inside below of filter chamber 4, and the inside top of flocculation chamber 5 is provided with the mixing arrangement who is used for mixing flocculating agent and sewage, and flocculation chamber 5 inside still is provided with the cleaning device who is used for clearing up the precipitate of 5 bottoms in flocculation chamber. The mixing device comprises a mounting frame 12 fixedly connected to one side of the top of the flocculation chamber 5, a vertical downward-arranged medicine mixing barrel 13 is fixedly connected to the mounting frame 12, the medicine mixing barrel 13 is of an upper and lower opening and is of a hollow barrel structure, the top end of the medicine mixing barrel 13 is positioned outside the flocculation chamber 5 and is fixedly connected with the mounting frame 12, the top end of the medicine mixing barrel 13 is in threaded connection with a sealing cover (not shown in the figure), the bottom end of the medicine mixing barrel 13 extends to the upper part inside the flocculation chamber 5, the medicine mixing barrel 13 is divided into an upper part and a lower part, which are respectively a medicine adding area 14 positioned above the upper part and a mixing area 15 positioned below the upper part, the inner diameter of the mixing area 15 is larger than the inner diameter of the medicine adding area 14, a vertical downward-arranged medicine adding pipe 16 is fixedly connected to the inner wall of the upper part and the lower part of the medicine adding pipe 16, openings are respectively formed in the upper and lower ends of the medicine adding pipes, one end, which is deviated from the filtering chamber 4, of the connecting pipe 9 extends to the inside the flocculation chamber 5 and is communicated with the lower part of the medicine adding area 14, connecting pipe 9 is located the below of 16 bottoms of dosing pipe, and fixed connection has the buffer board 17 of level setting on the inner wall at mixing zone 15 top, and the equipartition has the hole 18 of permeating water on the buffer board 17, and mixing zone 15 is inside from the top down in proper order fixedly connected with a plurality of baffling boards 19 that crisscross setting from top to bottom, and baffling board 19 level sets up inside mixing zone 15, and baffling board 19 is located the below of buffer board 17.
Preferably, filter equipment includes filter box 20 of fixed connection in the inside top of filter chamber 4, the uncovered setting in filter box 20 top, filter box 20 bottom is fixed with the filter screen 21 that has the downward slope setting, fixed connection has the auger 22 that has the upward slope setting between the bottom of filter screen 21 bottom and filter box 20 one side, auger 22's lower part is linked together with filter box 20 is inside, auger 22's top extends to filter chamber 4 outsidely, fixedly connected with L type support frame 23 on filter chamber 4's the lateral wall, auger 22 fixed mounting is on L type support frame 23, be located and offer the drain 24 that is used for discharging rubbish on filter chamber 4 outside auger 22's the bottom, drain 24 department intercommunication has blow off pipe 25. Sewage enters the filter box 20 through the water inlet pipe 7 and is filtered by the filter screen 21, solid garbage is blocked on the filter screen 21 and is conveyed to the outside of the filter chamber 4 by the packing auger 22, the operation load of subsequent treatment equipment is reduced, and the sewage treatment effect is improved.
Preferably, the biological filter layer comprises a zeolite layer 26, a medical stone layer 27 and a limestone layer 28 which are arranged from top to bottom in sequence, wherein the particle size of zeolite is larger than that of medical stone, and the particle size of the medical stone is larger than that of limestone. Zeolite, medical stone, lime stone can filter impurity such as organic matter, nitrogen, phosphorus, suspended solid in the sewage, reduce the concentration of pollutant in the sewage, and design into different particle size with it, can adsorb the filtration to the impurity of different particle size, improve sewage treatment's effect.
Preferably, cleaning device includes the motor 29 of fixed mounting at 5 top intermediate positions in flocculation chamber, motor 29 passes through motor mounting bracket fixed mounting at 5 tops in flocculation chamber, motor 29's output shaft is connected with the pivot 30 of vertical downward setting through the shaft coupling transmission, pivot 30 extends to the inside below of flocculation chamber 5, the inside below fixedly connected with undercut arc base 31 of flocculation chamber 5, the periphery of pivot 30 lower part is fixed with a plurality of and is used for scraping the scraper blade 32 of getting the precipitate on arc base 31 inner wall, scraper blade 32 laminates mutually with arc base 31's inner wall, arc base 31's bottom intercommunication has row miscellaneous pipe 33, be equipped with the valve on row miscellaneous pipe 33. The sediment that the scraper blade 32 is gathered on to the arc base 31 inner wall is in time cleared up, avoids long-term the use to lead to the bottom of arc base 31 to gather a large amount of sediment and influence sewage treatment's effect.
Preferably, a W-shaped groove 34 for storing sand is fixedly connected to the lower portion inside the settling chamber 6, a sand discharge pipe 35 is communicated with the bottom of the W-shaped groove 34, and a sand discharge valve is arranged on the sand discharge pipe 35. A part of silt mixed in the sewage is subjected to secondary precipitation in the settling chamber 6, is settled to the bottom of the W-shaped groove 34, and is discharged outwards through the sand discharge pipe 35.
Preferably, a horizontally arranged filter plate 36 is fixedly connected to the upper part of the interior of the sedimentation tank, filter holes 37 are uniformly distributed on the filter plate 36, and the height of the filter plate 36 is higher than that of the water outlet pipe 8 and lower than that of the overflow hole 11. The filtering plate 36 re-filters the sewage entering the interior of the settling chamber 6 through the overflow holes 11 to further remove solid impurities.
The utility model discloses a theory of operation and working process: when in use, sewage enters the inside of the filtering chamber 4 through the water inlet pipe 7, is filtered by the filtering screen 21, solid garbage is blocked on the filtering screen 21 and is conveyed to the outside of the filtering chamber 4 by the packing auger 22, the sewage flows into the lower part of the inside of the filtering chamber 4 through the filtering screen 21, and is sequentially filtered by the zeolite layer 26, the medical stone layer 27 and the limestone layer 28 to remove impurities such as organic matters, nitrogen, phosphorus, suspended matters and the like in sewage, then flows into the medicine adding area 14 through the connecting pipe 9 under the action of the water pump 10, meanwhile, a flocculating agent is put into the medicine adding pipe 16, the flocculating agent and the sewage are primarily mixed above the buffer plate 17, the mixed sewage uniformly flows into the mixing area 15 through the water permeable holes 18 and is further mixed under the action of the baffle plate 19, the mixed sewage flows into the flocculating chamber 5 to be precipitated after being uniformly mixed, the precipitation is finished, the sewage on the upper layer flows into the precipitating chamber 6 through the overflow holes 11 to be secondarily precipitated, the sediment falls into the bottom of the arc-shaped base 31, the sewage entering the interior of the settling chamber 6 from the overflow hole 11 is firstly filtered by a filter plate 36, solid impurities are further removed, a part of silt mixed in the sewage is precipitated in the interior of the settling chamber 6 for the second time, the sediment is settled to the bottom of the W-shaped groove 34 and is discharged outside through a sand discharge pipe 35, and the clean water is discharged to the water inlet of the artificial ecological wetland through a water outlet pipe 8; after using a period of time, when needing to the device clearance, starter motor 29, motor 29 drive pivot 30 and rotate to it is rotatory to drive scraper blade 32, and scraper blade 32 in time clears up the deposit of gathering on the arc base 31 inner wall, and the deposit is outwards discharged through arranging miscellaneous pipe 33, avoids long-term use to lead to arc base 31 bottom to gather a large amount of deposits and influence sewage treatment's effect. Sewage is through filtering, flocculation and precipitation, secondary sedimentation in proper order, carries out abundant sedimentation to solid waste, impurity in the sewage, improves the effect of filtering the sediment, alleviates the burden of follow-up artificial ecological wetland treatment, improves sewage treatment's efficiency, and conveniently in time clears up solid waste and precipitate, facilitates the use.
The above embodiments are for the description of the present invention, not for the limitation of the present invention, and any scheme after simply changing the present invention all belongs to the protection scope of the present invention.
Claims (6)
1. The utility model provides an ecological wetland's filtration sedimentation tank, includes the filtration sedimentation tank body, its characterized in that: the filtering and sedimentation tank comprises a filtering and sedimentation tank body, wherein a first partition plate and a second partition plate which are arranged at intervals are fixed inside the filtering and sedimentation tank body, the first partition plate and the second partition plate divide the inside of the filtering and sedimentation tank body into three independent chambers which are respectively a filtering chamber, a flocculation chamber and a sedimentation chamber, the top of the filtering chamber is communicated with a water inlet pipe, one side of the upper part of the sedimentation chamber is communicated with a water outlet pipe, a connecting pipe is communicated between the bottom of the filtering chamber and the upper part of the flocculation chamber, a water pump is arranged on the connecting pipe, and an overflow hole is formed in the upper part of the second partition plate; a filtering device for filtering solid garbage is fixedly connected above the inside of the filtering chamber, a biological filtering layer is arranged below the inside of the filtering chamber, a mixing device for mixing a flocculating agent and sewage is arranged above the inside of the flocculation chamber, and a cleaning device for cleaning sediments at the bottom of the flocculation chamber is also arranged inside the flocculation chamber; the mixing device comprises a mounting frame fixedly connected to one side of the top of the flocculation chamber, a vertical downward-arranged mixed medicine tank is fixedly connected to the mounting frame, the mixed medicine tank is of an upper opening and a lower opening and is of a hollow barrel structure, the top end of the mixed medicine tank is positioned outside the flocculation chamber and is fixedly connected with the mounting frame, the bottom end of the mixed medicine tank extends to the upper part inside the flocculation chamber, the mixed medicine tank is divided into an upper part and a lower part which are respectively a medicine adding area positioned above and a mixing area positioned below, the inner diameter of the mixing area is larger than that of the medicine adding area, a vertical downward-arranged medicine adding pipe is fixedly connected to the inner wall of the upper part of the medicine adding area, openings are formed in the upper end and the lower end of the medicine adding pipe, one end of the connecting pipe, which deviates from the filter chamber, extends to the inside of the flocculation chamber and is communicated with the lower part of the medicine adding area, the connecting pipe is positioned below the bottom of the medicine adding pipe, and a horizontally-arranged buffer plate is fixedly connected to the inner wall of the top of the mixing area, the uniform distribution has the hole of permeating water on the buffer board, and the inside from the top down of mixed zone fixedly connected with is a plurality of baffling boards that crisscross setting from top to bottom in proper order, and the baffling board is located the below of buffer board.
2. The filtering sedimentation tank of the ecological wetland according to claim 1, characterized in that: filter equipment includes the rose box of fixed connection in the inside top of filter chamber, the uncovered setting in rose box top, the rose box bottom is fixed with the filter screen that has the downward slope setting, fixed connection has the auger that the leaner slope set up between the bottom of filter screen bottom and rose box one side, the lower part and the rose box inside of auger are linked together, the top of auger extends to the filter chamber outside, fixedly connected with L type support frame on the lateral wall of filter chamber, auger fixed mounting is on L type support frame, be located and offer the drain that is used for discharging rubbish on the bottom of the outside auger of filter chamber.
3. The filtering sedimentation tank of the ecological wetland according to claim 2, wherein: the biological filter layer comprises a zeolite layer, a medical stone layer and a limestone layer which are arranged from top to bottom in sequence, wherein the particle size of zeolite is larger than that of medical stone, and the particle size of the medical stone is larger than that of limestone.
4. The filtering sedimentation tank of the ecological wetland according to claim 2, wherein: cleaning device includes the motor of fixed mounting at flocculation chamber top intermediate position, the output shaft of motor is connected with the pivot of vertical downward setting through the shaft coupling transmission, the pivot extends to the inside below of flocculation chamber, the inside below fixedly connected with arc base of undercut of flocculation chamber, the periphery of pivot lower part is fixed with a plurality of and is used for scraping the scraper blade of getting deposit on the arc base inner wall, the scraper blade is laminated mutually with arc base's inner wall, arc base's bottom intercommunication has row miscellaneous pipe, arrange and be equipped with the valve on the miscellaneous pipe.
5. The filtering sedimentation tank of the ecological wetland according to claim 2, wherein: the lower part inside the settling chamber is fixedly connected with a W-shaped groove used for storing sand, the bottom of the W-shaped groove is communicated with a sand discharge pipe, and the sand discharge pipe is provided with a sand discharge valve.
6. The filtering sedimentation tank of the ecological wetland according to claim 2, wherein: the filter that the top fixed connection of sedimentation tank inside has the level to set up, and the equipartition has the filtration hole on the filter, and the height that highly is higher than the outlet pipe of filter just is less than the height in overflow hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120277015.8U CN214880707U (en) | 2021-02-01 | 2021-02-01 | Filtering sedimentation tank of ecological wetland |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120277015.8U CN214880707U (en) | 2021-02-01 | 2021-02-01 | Filtering sedimentation tank of ecological wetland |
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| CN214880707U true CN214880707U (en) | 2021-11-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164920A (en) * | 2021-12-17 | 2022-03-11 | 北京市朝阳水利工程有限公司 | A prevent stifled cistern for hydraulic engineering |
| CN114870461A (en) * | 2022-05-26 | 2022-08-09 | 宁波碧城生态科技有限公司 | High-salt high-load coastal wetland treatment device |
| CN115286117A (en) * | 2022-01-22 | 2022-11-04 | 张娜 | Sedimentation tower for water ecological management and water ecological management system |
| CN116022981A (en) * | 2023-03-30 | 2023-04-28 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Composite type soil underground water circulation treatment device |
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2021
- 2021-02-01 CN CN202120277015.8U patent/CN214880707U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164920A (en) * | 2021-12-17 | 2022-03-11 | 北京市朝阳水利工程有限公司 | A prevent stifled cistern for hydraulic engineering |
| CN114164920B (en) * | 2021-12-17 | 2024-04-23 | 北京市朝阳水利工程有限公司 | A prevent stifled cistern for hydraulic engineering |
| CN115286117A (en) * | 2022-01-22 | 2022-11-04 | 张娜 | Sedimentation tower for water ecological management and water ecological management system |
| CN114870461A (en) * | 2022-05-26 | 2022-08-09 | 宁波碧城生态科技有限公司 | High-salt high-load coastal wetland treatment device |
| CN116022981A (en) * | 2023-03-30 | 2023-04-28 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Composite type soil underground water circulation treatment device |
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