CN114675003B - Experimental device for researching starting and scouring rate of municipal sewage sediment - Google Patents
Experimental device for researching starting and scouring rate of municipal sewage sediment Download PDFInfo
- Publication number
- CN114675003B CN114675003B CN202210277589.4A CN202210277589A CN114675003B CN 114675003 B CN114675003 B CN 114675003B CN 202210277589 A CN202210277589 A CN 202210277589A CN 114675003 B CN114675003 B CN 114675003B
- Authority
- CN
- China
- Prior art keywords
- water tank
- experimental
- municipal sewage
- rate
- circulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Remote Sensing (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides an experimental device for researching the starting and flushing rate of urban sewage sediment, which comprises a circulating pump, an experimental water tank filled with experimental water and a circulating water tank communicated with one end of the experimental water tank, wherein two ends of the circulating pump are respectively communicated with the other end of the experimental water tank and the circulating water tank and are used for driving the experimental water to circularly flow among the circulating pump, the experimental water tank and the circulating water tank; the experimental water tank is internally provided with a sandbox for containing the municipal sewage sediment sample and a rotating device for adjusting the water flow rate, so that the municipal sewage sediment sample in the sandbox is started and flushed under the action of the rotating device. Through the mode, the starting and flushing rate of the municipal sewage sediment sample under the action of different uniform flow rates can be obtained, and the method plays a good role in researching the sedimentation of the municipal sewage pipeline.
Description
Technical Field
The utility model relates to the technical field of urban sewage particle sediment research, in particular to an experimental device for researching the starting and scouring rate of urban sewage particles under the change of periodic speed.
Background
Urban pipe networks are used as the most important infrastructure for transporting and storing urban sewage, the most common urban pipe networks are large-diameter circular pipelines, after the urban sewage is filtered by a sewage treatment station, although the large-diameter urban sewage particles are filtered, suspended particles with the diameters of tens to hundreds of micrometers remain in the urban sewage pipe networks, the urban sewage suspended particles can show periodic change along with rain or urban water flow in the urban pipe networks, and under the influence of the periodic speed, the phenomenon of sedimentation and accumulation of the urban sewage suspended particles in the urban pipe networks can occur, so that urban sewage precipitates are formed. In order to prevent the urban sewage sediment from forming clogging, it is necessary to explore the starting flow rate rule and the flushing rate of the urban sewage sediment under the speed change of different periods so as to play a certain role in protecting the urban sewage pipe network.
The patent of the utility model with the publication number of CN 215405856U discloses a model sand deposition and scouring start test device, which comprises: the sand sample consolidation device comprises a collection box, wherein consolidated model sand is deposited in the collection box; a consolidated sand start test flume comprising: the water tank body is provided with a water inlet hole at the upstream and a water outlet hole at the downstream, and a sand spreading groove for installing the collecting box is arranged at the midstream; the image acquisition device is arranged above the water tank body and is used for acquiring a flushing start image or video of the concretion model sand in the collection box. The test device can obtain a result by means of a video storage tool through observation, the test equipment is complex, and the result is not visual.
The utility model patent with the application publication number of CN 106324215A discloses a sediment scouring start measuring system which can be simultaneously applied to a laboratory and a tidal flat site and comprises a control end and a measuring end which are connected; the measuring end comprises a reactor with a cylindrical structure, a profile flow rate meter, a turbidity sensor and a transmission device, wherein the profile flow rate meter, the turbidity sensor and the transmission device are positioned in the reactor, the profile flow rate meter and the turbidity sensor are respectively connected with the control end, the transmission device comprises a motor, a connecting column and a rotating paddle, and the motor is in transmission connection with the rotating paddle through the connecting column; the top of the reactor is provided with a cover plate, and the motor is fixed on the cover plate; the reactor is characterized in that an isolation groove is arranged in the center of the bottom of the reactor, a groove cover which is mutually matched and connected with the isolation groove is arranged at the top of the isolation groove, a water inlet valve and a water outlet valve are respectively arranged on the side wall of the reactor, and the bottom of the reactor is connected with a bottom plate or an annular lengthened supporting plate. The utility model has high requirements on equipment, and the scouring coefficient is obtained by a turbidity sensor, which is not beneficial to popularization and application.
Moreover, due to the very complex composition of the municipal sewage sediment, the sand sample aiming at the patent is greatly different from the municipal sewage sediment, the experimental device cannot be directly applied to the research of the municipal sewage sediment, and the special experimental equipment for researching the starting rule and the scouring rate of the municipal sewage sediment under the periodic speed change is still lacking, so that the municipal sewage pipe network is difficult to effectively protect.
In view of the foregoing, there is a need for an improved experimental apparatus for studying the start-up and flush rate of municipal wastewater sediment at varying cycle rates.
Disclosure of Invention
The utility model aims to provide an experimental device for researching the starting and flushing rate of urban sewage sediment, which is used for solving the problem that special experimental equipment is lacked in the prior art to conveniently research the starting rule and flushing rate of urban sewage suspended particles under the change of the periodic speed, shortening the experimental period and rapidly and directly obtaining the more core parameters influencing the clogging of the urban sewage pipe network.
In order to achieve the above object, the present utility model provides an experimental apparatus for studying the start and flush rate of municipal sewage sediment, which is characterized by comprising a circulating pump, an experimental water tank containing experimental water therein, and a circulating water tank communicated with one end of the experimental water tank, wherein two ends of the circulating pump are respectively communicated with the other end of the experimental water tank and the circulating water tank, and are used for driving the experimental water to circulate among the circulating pump, the experimental water tank and the circulating water tank; the experimental water tank is internally provided with a sandbox for containing the municipal sewage sediment sample and a rotating device for adjusting the water flow rate, so that the municipal sewage sediment sample in the sandbox is started and flushed under the action of the rotating device.
As a further improvement of the utility model, the rotating device comprises a rotating blade at least partially arranged in the experimental water and a first rotating structure for driving the rotating blade to rotate.
As a further improvement of the utility model, the first rotating structure is an electric motor for driving the tip of the rotary blade to produce a periodic rate change.
As a further improvement of the utility model, a filter plate is arranged in the experimental water tank along the direction perpendicular to the water flow, and a plurality of holes are formed in the filter plate and used for rectifying and filtering.
As a further improvement of the utility model, two guide rails are arranged in the experimental water tank in parallel along the water flow direction, the guide rails are provided with sliding blocks, and the sandboxes freely slide on the guide rails through the sliding blocks.
As a further improvement of the utility model, the sandbox is detachably connected with the guide rail.
As a further improvement of the utility model, the sandbox is provided with a rectangular expansion plate for observing the flowing form of the urban sewage particulate matter sample
As a further improvement of the utility model, a collecting tank is arranged at the edge of the bottom of the circulating water tank and is used for collecting sewage sediment.
As a further improvement of the utility model, the sandbox is located directly below the rotating blades.
The beneficial effects of the utility model are as follows:
1. according to the utility model, the circulating pump is connected with the experiment water tank and the circulating water tank for circulation, so that the experiment water circularly flows among the circulating pump, the experiment water tank and the circulating water tank; on the basis, the rotating device is arranged in the experimental water tank, so that the water flow speed in the experimental water tank can be further regulated and controlled, and a circulating flushing effect is formed in the experimental water tank; meanwhile, the sandbox with the urban sewage sediment sample is placed into the experimental water tank, and the urban sewage sediment sample placed in the sandbox is effectively started and flushed by using the cyclic flushing function of the experimental water tank. In the cyclic flushing process of the experimental water tank, the starting flow rate rule and the flushing rate of the municipal sewage sediment sample under the action of different uniform flow rates can be measured by changing the rotating speed of the rotating device, and the method has a good research effect on the sedimentation of the municipal sewage pipeline.
2. According to the experimental device for researching the starting and flushing rate of the municipal sewage sediment, provided by the utility model, experimental data of the starting rule and flushing rate of the municipal sewage suspended particles under different conditions can be conveniently and rapidly obtained by changing parameters such as the collection and distribution of the municipal sewage sediment, the rotating speed of the rotating device, the distance between the sandbox and the rotating blade, and the like, so that the relation between each factor and the flushing rate as well as the starting flow rate is further obtained, and the starting rule and flushing rate of the municipal sewage particle sediment are obtained in a simpler way, so that the device is used for preventing the precipitation of the particles in a municipal pipe network in practice, protecting the municipal sewage pipe network and preventing the blockage due to stasis.
Drawings
Fig. 1 is a schematic structural diagram of an experimental device for researching the start-up and scouring rate of municipal sewage sediment.
Fig. 2 is a schematic diagram of the structure of an experimental water tank in the experimental device for researching the starting and scouring rate of the municipal sewage sediment.
Fig. 3 is a schematic diagram of the combination structure of the sandbox and the guide rail in the experimental device for researching the starting and scouring rate of the municipal sewage sediment.
Fig. 4 is a schematic diagram of the structure of a circulation tank in an experimental apparatus for studying the start-up and flush rate of municipal sewage sediment.
Reference numerals
1-a water inlet line; 2-an experiment pool; 3-a filter plate; 4-a guide rail; 5-rotating the blades; 6-a first rotating structure; 7-sandboxes; 8-hose outlet; 9-a circulation pump; 10-a circulating water tank; 11-filter blades; 12-a collection tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present utility model due to unnecessary details, only structures and/or processing steps closely related to aspects of the present utility model are shown in the drawings, and other details not greatly related to the present utility model are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1 to 4, the experimental apparatus for studying the start-up and flushing rate of municipal sewage sediment provided by the present utility model comprises an experimental water tank, a circulating pump and a circulating water tank. Specifically, referring to fig. 1, the experimental water tank 2 is filled with experimental water, the water outlet end of the experimental water tank 2 is communicated with the circulating water tank 10, and two ends of the circulating pump 9 are respectively communicated with the water inlet end of the experimental water tank 2 and the circulating water tank 10, so as to drive the experimental water to circulate and flow between the circulating pump 9, the experimental water tank 2 and the circulating water tank 10. Referring to fig. 2, a sand box 7 for containing a sample of municipal sewage sediment and a rotating device for adjusting the water flow rate are arranged in the experimental water tank 2, so that the sample of municipal sewage sediment in the sand box 7 is started and flushed under the action of the rotating device.
Through the arrangement mode, the experimental device for researching the starting and scouring rate of the municipal sewage sediment can form a circulating scouring effect in the experimental water tank, so that the municipal sewage sediment sample placed in the sandbox can be effectively started and scoured, the starting flow rate rule and the scouring rate of the municipal sewage sediment sample can be conveniently researched, and the experimental device has important significance in protecting a municipal sewage pipe network and preventing the generation of clogging.
More specifically, referring to fig. 2, the rotating device includes a rotating blade 5 at least partially disposed in the test water and a first rotating structure 6 for driving the rotating blade 5 to rotate. In one embodiment of the present utility model, the first rotating mechanism 6 is a servo motor for controlling the rotation speed, and is used for driving the blade tips of the rotating blades 5 to generate periodic speed variation, so that the water flow speed in the experimental water tank 2 is periodically changed; in other embodiments of the present utility model, the first rotating mechanism 6 may be other types of driving devices, so long as the tip of the rotary blade 5 generates a periodic rate change.
In one embodiment of the utility model, the experimental water tank 2 is a cuboid with an open top, and the circulating pump 9 is communicated with one end of the experimental water tank 2 through a water inlet pipeline 1. The experimental water tank 2 is internally close to one end of the water inlet pipeline 1, the filter plate 3 is arranged along the direction perpendicular to water flow, and a plurality of holes are uniformly formed in the filter plate, so that the rectification effect can be realized, and urban sewage sediment can be filtered. One end of the experimental water tank 2, which is far away from the water inlet pipeline 1, is provided with a hose outlet 8, and the hose outlet 8 is connected with the circulating water tank 10 through a hose, so that the water body driven by the rotary blade 5 flows out.
Referring to fig. 2 and 3 in combination, two guide rails 4 are disposed at the bottom of the experimental water tank in parallel along the water flow direction, a sliding block is disposed on the guide rail 4, and the sandbox 7 freely slides on the guide rail 4 through the sliding block. And the sandbox 7 is detachably connected with the guide rail 4, the sandbox 7 can freely move on the guide rail 4 and be separated from the guide rail 4, the sandbox 7 can be taken down to freely fill urban sewage sediment samples, and then the sandbox 7 can be placed on the guide rail 4 to freely move. The sand box 7 is pushed to the position right below the rotary blade 5 along the guide rail 4, so that the sample of the municipal sewage sediment inside the sand box 7 can be started and flushed through the speed of the tip end of the rotary blade 5. The municipal sewage sediment sample can be added and piled up normally in the sandbox 7, and a rectangular expansion plate is arranged on the sandbox 7 for observing the flowing form of the municipal sewage sediment sample.
Referring to fig. 4, in an embodiment of the present utility model, the circulation tank is columnar, a filter blade 11 is disposed inside the circulation tank 10, the filter blade 11 is disposed in a fan shape with a central axis of the circulation tank 10 as a center, and a collecting tank 12 is further disposed at a bottom edge of the circulation tank 10. The filter blades 11 are uniformly provided with a plurality of small holes, sediment samples in experimental water can be slowed down through the obstruction generated by the small holes, suspended particles in water are continuously collected through the collecting tank 12 in the circulating water tank 10, fluid in water can make rotary motion under the action of the filter blades 11, most of the fluid can pass through the small holes on the filter blades 11, but sediment in the water can be slowly blocked to the collecting tank 12 due to the blocking of the filter blades, and the sediment in the water is effectively filtered.
The following describes a specific experimental method of the experimental device for researching the starting and scouring rate of the municipal sewage sediment:
firstly, two ends of a circulating pump 9 are respectively connected with an experiment water tank 2 and a circulating water tank 10, a hose outlet 8 of the experiment water tank 2 is communicated with the circulating water tank 10 through a hose, experiment water is filled in the experiment water tank 2, and circulating flow of the experiment water is carried out through the circulating pump 9. Then, the municipal sewage sediment sample to be measured is placed in the sandbox 7, the sandbox 7 is placed on the guide rail 4 through the sliding block, and the sandbox 7 is pushed to the position right below the rotary blade 5. And then the first rotating structure 6 is started, the rotating blades 5 are driven to rotate, so that the municipal sewage sediment sample in the sandbox 7 is started and flushed through the speed of the tips of the rotating blades 5.
After the start and flushing experiments are completed, the flushing rate can be directly calculated by converting the mass difference value of the sandbox 7 before and after flushing into the sample flushing height due to the fixed mass of the sandbox 7. The relation between each factor and the scouring rate and the starting flow rate can be obtained by utilizing the experimental principle of the control variable method by respectively changing parameters such as the grading of urban sewage particles, the rotating speed of the rotating device, the distance between the sandbox and the rotating blades and the like.
In summary, the utility model provides an experimental device for researching the starting and flushing rate of urban sewage sediment, which comprises a circulating pump, an experimental water tank filled with experimental water and a circulating water tank communicated with one end of the experimental water tank, wherein two ends of the circulating pump are respectively communicated with the other end of the experimental water tank and the circulating water tank, and are used for driving the experimental water to circulate among the circulating pump, the experimental water tank and the circulating water tank; the experimental water tank is internally provided with a sandbox for containing the municipal sewage sediment sample and a rotating device for adjusting the water flow rate, so that the municipal sewage sediment sample in the sandbox is started and flushed under the action of the rotating device. Through the mode, the starting and flushing rate of the municipal sewage sediment sample under the action of different uniform flow rates can be obtained, and the method plays a good role in researching the sedimentation of the municipal sewage pipeline.
The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model.
Claims (9)
1. The experimental device for researching the starting and flushing rate of the urban sewage sediment is characterized by comprising a circulating pump (9), an experimental water tank (2) filled with experimental water and a circulating water tank (10) communicated with one end of the experimental water tank (2), wherein two ends of the circulating pump (9) are respectively communicated with the other end of the experimental water tank (2) and the circulating water tank (10) and are used for driving the experimental water to circularly flow among the circulating pump (9), the experimental water tank (2) and the circulating water tank (10); a filter blade (11) and a collecting tank (12) for blocking sewage sediment in the water body are arranged in the circulating water tank (10); a filter plate (3) is arranged in the experimental water tank (2) along the direction perpendicular to the water flow; the experimental water tank (2) is internally provided with a sand box (7) for containing the municipal sewage sediment sample and a rotating device for adjusting the water flow rate, so that the municipal sewage sediment sample in the sand box (7) is started and flushed under the action of the rotating device.
2. The experimental set-up for studying the start-up and flush rate of municipal sewage sludge according to claim 1, wherein: the rotating device comprises a rotating blade (5) at least partially arranged in the experimental water and a first rotating structure (6) for driving the rotating blade (5) to rotate.
3. The experimental set-up for studying the start-up and flush rate of municipal sewage sludge according to claim 2, wherein: the first rotating structure (6) is a motor and is used for driving the blade tips of the rotating blades (5) to generate periodic speed change.
4. The experimental set-up for studying the start-up and flush rate of municipal sewage sludge according to claim 1, wherein: the filter plate (3) is provided with a plurality of holes for rectifying and filtering.
5. The experimental set-up for studying the start-up and flush rate of municipal sewage sludge according to claim 1, wherein: two guide rails (4) are arranged in the experiment water tank (2) in parallel along the water flow direction, sliding blocks are arranged on the guide rails (4), and the sandbox (7) freely slides on the guide rails (4) through the sliding blocks.
6. The experimental set-up for studying the start-up and flush rate of municipal wastewater precipitate according to claim 5, wherein: the sandbox (7) is detachably connected with the guide rail (4).
7. The experimental set-up for studying the start-up and flush rate of municipal sewage sludge according to claim 1, wherein: the sandbox (7) is provided with a rectangular expansion plate for observing the flowing form of the urban sewage particulate matter sample.
8. The experimental set-up for studying the start-up and flush rate of municipal sewage sludge according to claim 1, wherein: the edge of the bottom of the circulating water tank (10) is provided with a collecting tank (12) for collecting sewage sediment.
9. The experimental set-up for studying the start-up and flush rate of municipal sewage sludge according to claim 2, wherein: the sandbox (7) is located directly below the rotating blades (5).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210277589.4A CN114675003B (en) | 2022-03-21 | 2022-03-21 | Experimental device for researching starting and scouring rate of municipal sewage sediment |
| PCT/CN2022/120464 WO2023178960A1 (en) | 2022-03-21 | 2022-09-22 | Experimental apparatus for studying incipient motion and scouring rate of urban sewage sediments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210277589.4A CN114675003B (en) | 2022-03-21 | 2022-03-21 | Experimental device for researching starting and scouring rate of municipal sewage sediment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114675003A CN114675003A (en) | 2022-06-28 |
| CN114675003B true CN114675003B (en) | 2023-09-05 |
Family
ID=82074155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210277589.4A Active CN114675003B (en) | 2022-03-21 | 2022-03-21 | Experimental device for researching starting and scouring rate of municipal sewage sediment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114675003B (en) |
| WO (1) | WO2023178960A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114675003B (en) * | 2022-03-21 | 2023-09-05 | 中建三局绿色产业投资有限公司 | Experimental device for researching starting and scouring rate of municipal sewage sediment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324215A (en) * | 2016-08-12 | 2017-01-11 | 河海大学 | Silt washing starting measuring system capable of being synchronously applied to laboratory and tidal flat site |
| CN112179729A (en) * | 2019-07-04 | 2021-01-05 | 天津大学 | Pipeline deposit simulation experiment device, experiment system and experiment method |
| CN215405856U (en) * | 2021-06-25 | 2022-01-04 | 浙江省水利河口研究院(浙江省海洋规划设计研究院) | Model sand deposition and scouring start test device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114675003B (en) * | 2022-03-21 | 2023-09-05 | 中建三局绿色产业投资有限公司 | Experimental device for researching starting and scouring rate of municipal sewage sediment |
-
2022
- 2022-03-21 CN CN202210277589.4A patent/CN114675003B/en active Active
- 2022-09-22 WO PCT/CN2022/120464 patent/WO2023178960A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324215A (en) * | 2016-08-12 | 2017-01-11 | 河海大学 | Silt washing starting measuring system capable of being synchronously applied to laboratory and tidal flat site |
| CN112179729A (en) * | 2019-07-04 | 2021-01-05 | 天津大学 | Pipeline deposit simulation experiment device, experiment system and experiment method |
| CN215405856U (en) * | 2021-06-25 | 2022-01-04 | 浙江省水利河口研究院(浙江省海洋规划设计研究院) | Model sand deposition and scouring start test device |
Non-Patent Citations (1)
| Title |
|---|
| 桑浪涛 等.城市污水管网中污染物冲刷与沉积规律.《环境科学》.2017,第38卷(第38期),第1966页第2栏第1段-第1970页第2栏第2段，图3、6. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114675003A (en) | 2022-06-28 |
| WO2023178960A1 (en) | 2023-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108061680B (en) | Pre-pretreatment device of water quality on-line analyzer and pretreatment method thereof | |
| CN114675003B (en) | Experimental device for researching starting and scouring rate of municipal sewage sediment | |
| CN104075872B (en) | Straight circulation water tank device for simulating resuspension of sediment under action of reversing currents | |
| CN102505728A (en) | Complete technology for resource utilization of rainwater | |
| CN108479188B (en) | Directional sand settling and discharging filtering device with multi-layer diversion baffle and method thereof | |
| CN102874907B (en) | In-situ purification system for high-turbidity river water and river water treatment method | |
| KR101549161B1 (en) | Non-point sources pollutants removal facility | |
| CN115420659A (en) | Device for researching sedimentation and scouring characteristics of suspended particles in urban sewage pipeline | |
| CN107200417A (en) | Discussion On Measures of Rivers Pollution Treatment platform, system and method | |
| CN205088040U (en) | Sewage treatment plant carries mark technological transformation degree of depth filtration system | |
| CN115452484B (en) | Automatic collection system for high-concentration runoff sediment sample | |
| CN110723850A (en) | Industrial sewage treatment equipment | |
| CN205613098U (en) | Spiral -flow type degritting jar and sand removal system | |
| RU133751U1 (en) | RADIAL RESTAURANT | |
| CN104727436A (en) | Sloping plate device for removing suspended particles in rainwater storage tank and application thereof | |
| CN202822939U (en) | Fixing plate frame type micro filtering device | |
| CN202237568U (en) | Integrated water purifying device | |
| Kalashnikov et al. | Regulation of hydrocyclone parameters to improve the quality of water purification on drip irrigation systems | |
| KR100730994B1 (en) | Backing washing method and appartus for filter of run-off using the vehicle with pressed water tank | |
| CN215742319U (en) | Pretreatment device for sampling pipeline of online monitoring instrument | |
| CN204826174U (en) | A swash plate device for driving particle in rainwater regulation pond | |
| CN217829217U (en) | Continuous anti-interference pretreatment device for online water quality analyzer | |
| CN214809119U (en) | Energy-saving sewage treatment device | |
| CN221810290U (en) | Heavy metal wastewater treatment reactor | |
| CN210457612U (en) | Wastewater pretreatment equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |