CN210176577U - Artificial wetland dredging system of gravel packed bed - Google Patents
Artificial wetland dredging system of gravel packed bed Download PDFInfo
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- CN210176577U CN210176577U CN201920919053.1U CN201920919053U CN210176577U CN 210176577 U CN210176577 U CN 210176577U CN 201920919053 U CN201920919053 U CN 201920919053U CN 210176577 U CN210176577 U CN 210176577U
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Abstract
The utility model discloses a gravel packed bed constructed wetland dredging system, which comprises a gravel packed bed constructed wetland with a water distribution system, gravel packing and a water collection system, wherein a flushing and stirring device and a sludge discharge device are arranged at the periphery of the gravel packed bed constructed wetland; the flushing and stirring device comprises a first electric water suction pump, a water inlet of the first electric water suction pump is connected with a first water supply pipe, and a water outlet of the first electric water suction pump is connected with a flushing water pipe; the mud discharging device comprises a sand pumping pump, a water inlet of the sand pumping pump is connected with a suction pipe, and a water outlet of the sand pumping pump is connected with a mud discharging pipe. The utility model discloses can resume fast and establish rubble packed bed constructed wetland water capacity, solve its silting up state, improve constructed wetland service life, reduce the operation cost.
Description
Technical Field
The utility model relates to a rubble packed bed constructed wetland among the environmental engineering, especially a rubble packed bed constructed wetland desilting system.
Background
In the process of rapid promotion of urbanization in China, the artificial wetland sewage treatment technology is gradually popularized and applied to rural non-point source pollution, urban comprehensive domestic sewage, livestock and poultry breeding wastewater, mine wastewater treatment and advanced treatment of tail water of sewage plants as an ecological treatment technology. Common types of artificial wetland systems include vertical subsurface flow artificial wetlands, horizontal subsurface flow artificial wetlands, surface flow artificial wetlands, complex flow artificial wetlands, and combined artificial wetlands. Different types of artificial wetland systems are generally composed of wetland plants, fillers, microorganisms, water supply and drainage pipelines and the like. The selection of the filler varieties has great influence on microbial biofilm formation, phosphorus removal and plant planting, the most widely used in engineering practice at present is the gravel filler, and the constructed wetland system formed by the gravel filler is the gravel filler bed constructed wetland system. The gravel packed bed constructed wetland system has a certain porosity, but due to accumulation of suspended matters (SS) in the system, proliferation and aging and shedding of a biological membrane, decay of a plant root system and the like, the gravel packed bed is easy to have porosity reduction and conductivity reduction in the long-term operation process, and finally the system is blocked.
Aiming at the dredging method of the gravel packed bed, the most common method at present is to replace the packing or mechanically turn over and wash, and the two methods have the defects of high investment cost, long updating time, need to plant aquatic plants again, influence on the normal operation and use of the system and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, overcome prior art not enough, provide a quick recovery system ability of draining off water, solve the rubble packed bed constructed wetland desilting system that silts up.
In order to solve the technical problem, the utility model discloses a technical scheme is: a dredging system for a gravel packed bed artificial wetland comprises the gravel packed bed artificial wetland with a water distribution system, gravel packing and a water collection system, wherein the water distribution system comprises a main water distribution pipe which is connected with a plurality of water distribution branch pipes distributed in the gravel packed bed artificial wetland; the water collecting system comprises a water collecting main pipe, one end of the water collecting main pipe extends out of the gravel packed bed artificial wetland, and a plurality of water collecting branch pipes distributed in the gravel packed bed artificial wetland are connected to the water collecting main pipe, and the water collecting main pipe comprises:
a flushing and stirring device and a sludge discharge device are arranged at the periphery of the gravel packed bed artificial wetland;
the flushing and stirring device comprises a first electric water suction pump, a water inlet of the first electric water suction pump is connected with a first water supply pipe, and a water outlet of the first electric water suction pump is connected with a flushing water pipe;
the mud discharging device comprises a sand pumping pump, a water inlet of the sand pumping pump is connected with a suction pipe, and a water outlet of the sand pumping pump is connected with a mud discharging pipe.
Further, a first water supply pipe of the washing and stirring device is connected with a washing water source.
Furthermore, the pipe orifice of the flushing water pipe can move in the flushing range, the coverage range is set to be 2-4 square meters at minimum, 40-50 square meters at maximum, and the full coverage in the gravel packed bed constructed wetland can be realized by moving the position of the flushing stirring device.
Further, the pipe orifice of the suction pipe is wrapped by a steel wire mesh with the aperture of 10mm, and the steel wire mesh is used for preventing solids with larger particle sizes from entering the sand pump; the pipe orifice of the suction pipe can move in the mud discharge range, the minimum coverage range is set to be 2-4 square meters, the maximum coverage range is set to be 40-50 square meters, and the full coverage in the stone crushing filler bed constructed wetland can be realized by moving the position of the mud discharge device.
Furthermore, a 90-degree elbow convenient for water level adjustment is arranged on the water collecting main pipe.
Furthermore, high-pressure flushing devices are installed on the periphery of the artificial wetland of the gravel packed bed and comprise a second electric water suction pump, a water inlet of the second electric water suction pump is connected with a second water supply pipe, a water outlet of the second electric water suction pump is connected with a high-pressure flushing water pipe, and the high-pressure flushing water pipe is connected with the water distribution main pipe or the water collection main pipe.
Furthermore, the high-pressure flushing water pipe sprays high-pressure flushing water flow which is 10-15 times higher than the design water pressure of the artificial wetland of the gravel packed bed.
Because the top layer 30cm of rubble packed bed takes place to block up most easily, takes place to block up the back when the top layer, utilizes the utility model discloses wash agitating unit and wash and stir rubble packed bed constructed wetland's top layer silt thing, application sludge discharge device suction rubble packed bed constructed wetland top layer muddy water mixture. When the blockage of the gravel packed bed is serious, the high-pressure flushing device is operated to utilize high-pressure water flow to clean a water distribution system and a water collection system of the artificial wetland of the gravel packed bed, so that the water passing capacity of the gravel packed bed is quickly recovered, and the siltation is solved.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the method is suitable for different types of gravel packed bed artificial wetlands such as vertical underflow, horizontal underflow, surface flow and the like;
2. the water-passing capacity of the artificial wetland of the gravel packed bed can be recovered without replacing gravel packing or excavating aquatic plants in a large range, and the silting problem is solved;
3. the disturbance to the gravel packed bed constructed wetland is small, the water passing capacity can be quickly recovered, the silting problem is solved, and the water passing of the gravel packed bed constructed wetland of 1000 square meters can be recovered within 1 to 3 days;
4. the sludge discharge pipe is adopted to move the sludge discharge, the direction can be adjusted within a certain range according to the sludge clogging condition, the operation is simple and convenient, and the whole dredging process can be completed by only 1-2 persons;
5. the floor area of the equipment is small, only 2-3 square meters are needed, and the equipment can be disassembled and collected into a warehouse after dredging is completed without specially constructing equipment rooms.
Drawings
Figure 1 is the utility model discloses rubble packed bed constructed wetland cut-away view of rubble packed bed constructed wetland desilting system.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic view of the system structure of the high-pressure flushing device of the present invention in the first working state.
Fig. 4 is a schematic view of the system structure of the high-pressure flushing device of the present invention in the second working state.
In the figure: 1. a water distribution system; 11. a water distribution main pipe; 12. a water distribution branch pipe; 2. a packed bed of crushed stone; 3. an aquatic plant; 4. a water collection system; 41. a main water collecting pipe; 42. a water collecting branch pipe; 5. emptying the pipe; 6. artificial wetland with a gravel packed bed; 7. washing the stirring device; 71. a first water supply pipe; 72. a first electric water pump; 73. flushing the water pipe; 8. a sludge discharge device; 81. a suction tube; 82. a sludge discharge pipe; 83. a sand pump; 9. a high pressure flushing device; 91. a high-pressure flushing water pipe; 92. a second water supply pipe; 93. a second electric suction pump.
Detailed Description
The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.
For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.
Example 1:
as shown in fig. 1 and fig. 3, an embodiment of the dredging system of the gravel packed bed of the present invention comprises a gravel packed bed constructed wetland 6 with a water distribution system 1, a gravel packed bed 2, aquatic plants 3, a water collection system 4, and an evacuation pipe 5, wherein the water distribution system 1 is used for uniformly distributing the water fed into the gravel packed bed and is composed of a main water distribution pipe 11 connected with a water source and a plurality of branch water distribution pipes 12 distributed in the gravel packed bed 2; the water collecting system 4 is used for collecting the effluent purified by the gravel packed bed and consists of a water collecting main pipe 41 with one end extending out of the artificial wetland of the gravel packed bed and a plurality of water collecting branch pipes 42 distributed in the gravel packed bed 2. Under the normal operation condition, sewage enters the water distribution system 1 through the main water distribution pipe 11, then enters the gravel packed bed 2 through the branch water distribution pipes 12, is collected through the branch water collection pipe 42, and is discharged out of the gravel packed bed 2 through the main water collection pipe 41. The water collecting main pipe 41 is provided with a 90-degree elbow so as to facilitate the water level adjustment in the gravel packed bed 2.
The surface layer of the gravel packed bed 2 is most likely to be blocked by 30cm, and after the surface layer is blocked, a washing and stirring device 7 and a sludge discharge device 8 which are shown in figure 2 are arranged on the periphery of the gravel packed bed artificial wetland for surface layer dredging. The flushing and stirring device 7 comprises a flushing water pipe 73, a first electric water pump 72 and a first water supply pipe 71, wherein the flushing water pipe 73 is fixedly connected with a pipe hoop for a water outlet of the first electric water pump 72, and the first water supply pipe 71 is fixedly connected with a pipe hoop for a water inlet of the first electric water pump 72. The pipe orifice of the flushing water pipe 73 can move in the flushing range, the minimum coverage range is set to be 2-4 square meters, the maximum coverage range is set to be 40-50 square meters, and the whole coverage of the gravel packed bed constructed wetland can be realized by moving the position of the flushing stirring device 7. The sludge discharging device 8 comprises a suction pipe 81, a sludge discharging pipe 82 and a sand pump 83, the suction pipe 81 is fixedly connected with a water inlet of the sand pump 83, and the sludge discharging pipe 82 is fixedly connected with a water outlet of the sand pump 83. The pipe orifice of the suction pipe 81 is wrapped by a steel wire mesh with the aperture of 10mm and is used for preventing solids with larger grain sizes from entering the sand pump; the pipe orifice of the suction pipe can move in the mud discharge range, the minimum coverage range is set to be 2-4 square meters, the maximum coverage range is set to be 40-50 square meters, and the whole coverage of the gravel packed bed constructed wetland can be realized by moving the position of the mud discharge device 8.
During the use, wash agitating unit 7 and arrange mud device 8 and move according to following step:
(1) soaking the surface layer: lifting the water level of the gravel packed bed 2 to a height which is enough to submerge all surface layer sludge, maintaining the immersion for 1-2h, and closing the main water distribution pipe 11 and the main water collection pipe 41;
(2) washing and mixing the surface layer: starting a first electric water pump 72, and washing and mixing the sludge in the gravel packed bed 2 by an operator holding a washing water pipe 73;
(3) surface layer pumping: starting a sand pump 83, holding a suction pipe 81 by an operator, maintaining the pipe orifice submerged in the sludge mixture for pumping by 1cm, and continuously moving the position of the pipe orifice to pump the sludge in the peripheral range;
(4) and (5) finishing surface layer dredging: stopping surface washing and mixing when no sludge or negligible sludge exists in surface crushed stone gaps by visual inspection, and closing the simple washing and stirring device 7 and the sludge discharge device 8.
After the surface layer is cleared, high-pressure washing can be carried out according to the blocking condition of the gravel packed bed 2, and a high-pressure washing device 9 shown in figure 3 is installed. The high-pressure flushing device 9 comprises a high-pressure flushing water pipe 91, a second water supply pipe 92 and a second electric water pump 93, the high-pressure flushing water pipe 91 is fixedly connected with a water outlet of the second electric water pump 92, and the second water supply pipe 92 is fixedly connected with a water inlet of the second electric water pump 93; the high-pressure flushing water pipe 91 is firmly connected with the pipe orifice of the main water distribution pipe 11 of the artificial wetland 6 of the gravel packed bed, and sprays high-pressure flushing water flow which is 10-15 times higher than the designed water pressure of the artificial wetland of the gravel packed bed.
Specifically, the high-pressure flushing device 9 operates as follows following the above steps:
(5) installing a high-pressure flushing device: the high-pressure flushing water pipe 91 is fixedly connected with the main water distribution pipe 11 by a pipe hoop or a steel wire, so that the high-pressure flushing device 9 and the main water distribution pipe 11 form a complete high-pressure flushing system;
(6) starting the high-pressure flushing system: keeping the water collection main pipe 41 closed, opening the water distribution main pipe 11, simultaneously starting the second electric water suction pump 93, closing the second electric water suction pump 93 after opening for 10 seconds, restarting the second electric water suction pump 93 after 30 seconds of intermission, keeping a high-pressure flushing state when bubbling or spring surge occurs on the gravel surface, and repeatedly closing and opening the second electric water suction pump 93 if no bubbling phenomenon exists after 30 seconds of opening;
(7) deep pumping: starting the sludge discharge device 8, and carrying out pumping drainage at the spring position or the sediment outflow position by holding the pumping pipe 81 by an operator, maintaining the pipe orifice submerged in the sediment mixture for pumping drainage at the depth of 1cm, and continuously moving the position of the pipe orifice to pump drainage the sediment in the peripheral range;
(8) repeating the steps (2), (3), (4) and (7) according to the fouling degree of the system;
(9) and (5) finishing dredging: and (3) after the high-pressure flushing water flowing out of the surface of the gravel packed bed recovers clarification and no obvious sediment exists in gravel gaps, the high-pressure flushing device 9 and the sludge discharge device 8 are closed, the suction pipe 81 is connected with the water collection main pipe 41, normal water inlet and outlet are recovered, the sludge discharge device 8 is started again, and the early-stage turbid flushing water in the water collection main pipe 41 is pumped and discharged until the effluent is clarified.
As shown in fig. 4, the high pressure flushing water pipe of the high pressure flushing device 9 of the present invention can also be connected and fixed with the main water collecting pipe 41, so that the high pressure flushing device 9 and the main water collecting pipe 41 form a complete high pressure back flushing system. The suction pipe 81 of the sludge discharge device 8 of the utility model can also be connected with the emptying pipe 5, and the cleaning sewage is discharged through the emptying pipe 5.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, modifications and additions can be made by those skilled in the art without departing from the scope of the present invention, such as adding a horizontal pipe or a vertical pipe with a wall hole in an artificial wetland during dredging, which is equivalent to the equivalent embodiments, and all of the technical solutions are within the scope of the present invention.
Claims (10)
1. The utility model provides a rubble packed bed constructed wetland desilting system, is including the rubble packed bed constructed wetland that has water distribution system, rubble filler, water collection system, water distribution system includes that the water distribution is responsible for, and this water distribution is responsible for and is connected many distributions and be in water distribution branch pipe in the rubble packed bed constructed wetland, water collection system includes that one end stretches out rubble packed bed constructed wetland's the person in charge that catchments is responsible for, and this catchments and is responsible for and is connected many distributions and be in branch pipe that catchments in the rubble packed bed constructed wetland, its characterized in that:
a flushing and stirring device and a sludge discharge device are arranged at the periphery of the gravel packed bed artificial wetland;
the flushing and stirring device comprises a first electric water suction pump, a water inlet of the first electric water suction pump is connected with a first water supply pipe, and a water outlet of the first electric water suction pump is connected with a flushing water pipe;
the mud discharging device comprises a sand pumping pump, a water inlet of the sand pumping pump is connected with a suction pipe, and a water outlet of the sand pumping pump is connected with a mud discharging pipe.
2. The constructed wetland dredging system of the gravel packed bed as claimed in claim 1, wherein the first water supply pipe of the flushing and stirring device is connected with a flushing water source.
3. The constructed wetland dredging system of the gravel packed bed as claimed in claim 1, wherein the pipe orifice of the flushing water pipe moves within the flushing range, and the flushing coverage is set to be 2-4 square meters at the minimum and 40-50 square meters at the maximum.
4. The constructed wetland dredging system of the gravel packed bed as claimed in claim 1, wherein the mouth of the suction pipe is wrapped by a steel wire mesh with a pore diameter of 10 mm.
5. The constructed wetland dredging system of the gravel packed bed as claimed in claim 1, wherein the pipe orifice of the suction pipe moves within the mud discharge range, the mud discharge coverage is set to be 2-4 square meters at minimum and 40-50 square meters at maximum.
6. The constructed wetland dredging system of the gravel packed bed as claimed in claim 1, wherein the main water collecting pipe is provided with a 90-degree elbow facilitating water level adjustment.
7. The gravel packed bed constructed wetland dredging system according to claim 1, wherein a high-pressure flushing device is installed on the periphery of the gravel packed bed constructed wetland, the high-pressure flushing device comprises a second electric water pump, the water inlet of the second electric water pump is connected with a second water supply pipe, and the water outlet of the second electric water pump is connected with a high-pressure flushing water pipe.
8. The constructed wetland dredging system of the gravel packed bed as claimed in claim 7, wherein the high-pressure flushing water pipe is connected with the main water distribution pipe.
9. The constructed wetland dredging system of the gravel packed bed as claimed in claim 7, wherein the high-pressure flushing water pipe is connected with the main water collecting pipe.
10. The gravel packed bed constructed wetland dredging system according to claim 7, wherein the high-pressure flushing water pipe sprays high-pressure flushing water flow 10-15 times higher than the designed water pressure of the gravel packed bed constructed wetland.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920919053.1U CN210176577U (en) | 2019-06-18 | 2019-06-18 | Artificial wetland dredging system of gravel packed bed |
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| CN201920919053.1U CN210176577U (en) | 2019-06-18 | 2019-06-18 | Artificial wetland dredging system of gravel packed bed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582494A (en) * | 2021-08-21 | 2021-11-02 | 谷媛媛 | Constructed wetland structure with desilting mediation function |
| CN116553737A (en) * | 2023-06-05 | 2023-08-08 | 悉地（苏州）勘察设计顾问有限公司 | Matrix type parallel arrangement subsurface wetland water flow control system |
-
2019
- 2019-06-18 CN CN201920919053.1U patent/CN210176577U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582494A (en) * | 2021-08-21 | 2021-11-02 | 谷媛媛 | Constructed wetland structure with desilting mediation function |
| CN113582494B (en) * | 2021-08-21 | 2024-05-14 | 谷媛媛 | Constructed wetland structure with dredging function |
| CN116553737A (en) * | 2023-06-05 | 2023-08-08 | 悉地（苏州）勘察设计顾问有限公司 | Matrix type parallel arrangement subsurface wetland water flow control system |
| CN116553737B (en) * | 2023-06-05 | 2023-12-01 | 悉地（苏州）勘察设计顾问有限公司 | Matrix type parallel arrangement subsurface wetland water flow control system |
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