CN211339081U - River pollution's sewage pretreatment system dams is put to rainwater - Google Patents
River pollution's sewage pretreatment system dams is put to rainwater Download PDFInfo
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- CN211339081U CN211339081U CN201921830923.4U CN201921830923U CN211339081U CN 211339081 U CN211339081 U CN 211339081U CN 201921830923 U CN201921830923 U CN 201921830923U CN 211339081 U CN211339081 U CN 211339081U
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- 239000010865 sewage Substances 0.000 title claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000004062 sedimentation Methods 0.000 claims abstract description 36
- 239000004576 sand Substances 0.000 claims abstract description 28
- 238000005189 flocculation Methods 0.000 claims abstract description 19
- 230000016615 flocculation Effects 0.000 claims abstract description 18
- 238000005345 coagulation Methods 0.000 claims abstract description 16
- 230000015271 coagulation Effects 0.000 claims abstract description 16
- 239000010802 sludge Substances 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 238000005352 clarification Methods 0.000 claims abstract description 10
- 238000007790 scraping Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 abstract description 16
- 239000012535 impurity Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003311 flocculating effect Effects 0.000 abstract description 4
- 239000008394 flocculating agent Substances 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000701 coagulant Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 229920006318 anionic polymer Polymers 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The utility model discloses an intercepting sewage pretreatment system for river pollution drainage by rainwater, which comprises a water collecting tank, an intercepting filter screen, a grid tank and a sand adding high-efficiency clarification tank; the intercepting filter screen is arranged in the water collecting tank to separate sewage flowing into the water collecting tank from the lifting pump, and the baffle plate is stacked above the filter screen plate; the sand-adding high-efficiency clarification tank comprises a coagulation tank, a carrier injection tank, a flocculation tank and a sedimentation tank which are sequentially communicated; the coagulation tank is communicated with the water outlet, and the carrier injection tank is used for throwing sand grains. The designed baffle is arranged above the filter screen plate, and the large solid impurities in the sewage are blocked by the intercepting filter screen, so that the blockage is avoided, and meanwhile, the problem that the filter screen plate is poor in liquidity due to the fact that some floating solid impurities are hung on the filter screen plate can be avoided; sand grains are added into the carrier injection tank, and the sand grains improve the capture capacity of the grains, so that large and stable flocs are formed; a flocculating agent is added into the flocculation tank to form a large flocculating body; the sedimentation tank is used for settling the sludge so as to realize the clarification effect.
Description
Technical Field
The utility model relates to a sewage treatment field especially relates to a river pollution's dirty pretreatment of water system that dams is put to rainwater.
Background
At present, the air or the ground often contains pollutants (domestic garbage, kitchen waste sewage and the like), surface runoff is formed after raining and enters an urban pipe network system, and therefore sewage flowing out of the pipe network system needs to be intercepted and then is discharged into natural water flow.
The domestic sewage of urban residents enters a domestic sewage treatment plant through a pipeline, and is changed into clean and pollution-free water through the processes of oxygenation, stirring, fermentation, precipitation and the like, so that the river channel and urban water sources are protected, and the environment is protected.
The sewage can be clarified sewage through processes such as solid impurity filtration, sludge sedimentation usually, often contains a large amount of solid impurity and floater impurity in the sewage, generally needs the grid to align and filters, generally all uses pump and pipeline to align in leading-in grid pond of sewage to filter, and the great solid impurity of volume or size and floater cause pump and pipeline to block up easily, influence its normal work.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving above-mentioned technical problem to a certain extent at least. Therefore, the utility model provides a river pollution's dirty pretreatment of water system that dams is put to smooth and easy rainwater of operation.
The utility model provides a technical scheme that its technical problem adopted is: a river-shedding pollution intercepting sewage pretreatment system for rainwater comprises a water collecting tank, an intercepting filter screen, a grid tank and a sand-adding high-efficiency clarification tank; the water collecting tank is used for storing inflowing sewage and is internally provided with a lifting pump; the intercepting filter screen is arranged in the water collecting tank to separate sewage flowing into the water collecting tank from the lifting pump, the intercepting filter screen comprises a filter screen plate and a baffle plate, the baffle plate is arranged above the filter screen plate in a stacked mode, and meshes for the sewage to pass through are formed in the filter screen plate; the grating pool is provided with a water inlet and a water outlet, the water inlet is communicated with the lift pump, and a grating for filtering sewage is arranged between the water inlet and the water outlet; the sand-adding high-efficiency clarification tank comprises a coagulation tank, a carrier injection tank, a flocculation tank and a sedimentation tank which are sequentially communicated; the utility model discloses a sewage treatment device, including coagulation basin, notes carrier pond, coagulating basin and delivery port intercommunication, it is used for throwing into the sand grain to annotate the carrier pond, all install the mixer in coagulation basin, notes carrier pond and the flocculating tank, the sedimentation tank bottom is connected with the blow off pipe, the sedimentation tank top is provided with the water catch bowl that is used for collecting the supernatant that overflows the sedimentation tank.
Furthermore, a mud scraping plate is arranged at the bottom of the sedimentation tank and is connected with a mud scraping motor for driving the mud scraping plate to rotate.
Further, the upper end in the sedimentation tank is provided with an inclined plate for sedimentation of particles and flocs, and the inclined plate is positioned below the water collecting tank.
Furthermore, the inclined plate forms a certain included angle with the horizontal plane.
Furthermore, a hydrocyclone is arranged on the sewage discharge pipe and used for adding the sand separated from the sludge sediment into the carrier injection pool again.
Further, the interception filter screen further comprises a frame and a middle frame, the middle frame is located between the two frames, and the two sides of the filter screen plate and the two sides of the baffle plate are respectively installed on the frame and the middle frame corresponding to the filter screen plate.
Further, the interception filter screen also comprises a cover plate, and the cover plate is covered at the upper ends of the frame and the middle frame to limit the filter screen plate and the baffle.
Further, the center is provided with a first mounting hole extending vertically, the cover plate is provided with a second mounting hole matched with the first mounting hole, and fasteners are mounted in the first mounting hole and the second mounting hole.
Further, one side of the baffle towards the lift pump is provided with a handle.
The utility model has the advantages that: the large solid impurities in the sewage are blocked by the intercepting filter screen, so that the large solid impurities are prevented from entering a subsequent pump and a pipeline to cause blockage; in addition, the baffle is arranged above the filter screen plate, so that the problem that the filter screen plate is poor in liquidity due to the fact that some floating solid impurities (such as plastic belts) are hung on the filter screen plate can be avoided; adding a coagulant into the coagulation tank, wherein the coagulant reacts with phosphorus in the sewage to form precipitates, and removing the precipitates in the precipitation tank, and meanwhile, arranging a stirrer in the coagulation tank to fully react through rapid mechanical stirring; sand grains are added into the carrier injection tank, and the sand grains improve the capture capacity of the grains, so that large and stable flocs are formed; a flocculating agent is added into the flocculation tank to form a large flocculating body; the sedimentation tank is used for settling the sludge so as to realize the clarification effect.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a structure according to one embodiment;
FIG. 2 is a schematic view of an intercepting screen mounting structure according to one embodiment;
FIG. 3 is an exploded view of an intercepting screen mounting structure according to an embodiment
FIG. 4 is an enlarged view at A of FIG. 3;
FIG. 5 is a schematic structural view of a sand-adding high-efficiency clarifier.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1 to 5, the utility model discloses a river pollution's dirty pretreatment of water system that dams is put to rainwater, including catch basin 100, interception filter screen 200, grid pond 300 and add sand high efficiency clarification tank 500.
The collecting tank 100 is used for storing the inflowing sewage, and a lift pump 110 is arranged in the collecting tank 100, as shown in fig. 1, the left end of the collecting tank 100 is an inlet of the sewage, and the bottom of the right end is provided with the lift pump 110. The intercepting filter screen 200 is disposed in the collecting tank 100 and located in the middle of the collecting tank 100 to separate the sewage flowing into the collecting tank 100 from the lift pump 110, that is, the intercepting filter screen 200 intercepts the sewage flowing into the collecting tank 100, so that the sewage is prevented from directly entering the lift pump 110, the intercepting filter screen 200 primarily filters the sewage, large solid impurities are blocked, and the blockage of the lift pump 110 and subsequent pipelines is avoided.
Wherein the interception screen 200 includes a screen plate 230 and a baffle 240. The intercepting screen 200 comprises a screen plate 230 and a baffle 240, wherein the baffle 240 is stacked above the screen plate 230, and the screen plate 230 is provided with meshes for sewage to pass through. Usually, both sides of the screen plate 230 and the baffle plate 240 are fixed on the inner wall of the sump 100, but this design causes the screen plate 230 and the baffle plate 240 to be troublesome to remove and replace, which is not favorable for subsequent maintenance. To this end, the intercepting screen 200 is further provided with a rim 210 and a middle frame 220. The middle frame 220 is located between the two frames 210. The two frames 210 are fixed on the side wall of the collecting tank 100, and the bottom of the screen plate 230 is against the bottom of the collecting tank 100, so as to realize the intercepting effect. Two sides of the filter screen plate 230 are respectively installed on the corresponding frame 210 and the middle frame 220, two sides of the baffle 240 are also respectively installed on the corresponding frame 210 and the middle frame 220, the baffle 240 is overlapped above the filter screen plate 230, the filter screen plate 230 is provided with meshes for sewage to pass through, the meshes can block large-sized solid objects in the sewage, and the meshes are distributed in a grid shape. Specifically, the opposite sides of the two frames 210 are provided with first slots 211 for inserting the filter screen plates 230 and the baffles 240, the two sides of the middle frame 220 are provided with second slots 221 for inserting the filter screen plates 230 and the baffles 240, the two sides of the filter screen plates 230 are respectively inserted into the first slots 211 and the second slots 221, and the two sides of the baffles 240 are also respectively inserted into the first slots 211 and the second slots 221. The first slot 211 and the second slot 221 have the same size, the two sides of the filter screen plate 230 are provided with first inserting strips 231 matched with the first slot 211 and the second slot 221, the two sides of the baffle 240 are provided with second inserting strips 241 matched with the first slot 211 and the second slot 221, and the middle of the filter screen plate 230 is provided with meshes to realize the filtering effect.
In order to realize good limit of the screen plate 230 and the baffle plate 240, a cover plate 250 is further included, and the cover plate 250 is covered on the upper ends of the frame 210 and the middle frame 220 to limit the screen plate 230 and the baffle plate 240. The cover plate 250 is preferably connected in a manner that the middle frame 220 is provided with a first mounting hole 222 extending vertically, the cover plate 250 is provided with a second mounting hole 251 matching with the first mounting hole 222, and the first mounting hole 222 and the second mounting hole 251 are provided with fasteners. The fastening member is preferably a fastening pin 260, as shown in fig. 3, the length of the fastening pin 260 matches the size of the middle frame 220, and the fastening pin 260 is inserted into the middle frame 220 to realize limit fixing. In order to facilitate the installation and removal of the fastening pin 260, a pull ring 261 for facilitating the pulling-out is provided on the top of the fastening pin 260. In order to improve the positioning accuracy of the cover plate 250, the bottom of the cover plate 250 is provided with the insertion blocks 252 inserted into the first insertion groove 211 and the second insertion groove 221, i.e., the upper end of the baffle 240 is lower than the tops of the rim 210 and the middle frame 220, so that a space is left for the insertion blocks 252. In addition, a connecting plate 253 is connected between the insertion blocks 252, and the connecting plate 253 is attached to the top of the baffle 240 to eliminate the gap between the baffle 240 and the cover plate 250. Of course, in other embodiments, the fastener may be a bolt, and the first mounting hole 222 may be a threaded hole matching the bolt.
To facilitate the transportation and the assembly and disassembly of the baffle 240, a handle 242 is provided on the side of the baffle 240 facing the lift pump 110.
The grating tank 300 is provided with a water inlet 310 and a water outlet 320, the water inlet 310 is communicated with the lift pump 110 through a water inlet pipe 111, a valve 112 is installed in the middle of the water inlet pipe 111, and a grating 400 for filtering sewage is arranged between the water inlet 310 and the water outlet 320. Here, the size of the solid impurities filtered by the grid 400 is smaller than that of the solid impurities filtered by the screen plate 230, that is, the water gap of the grid 400 is smaller than the size of the mesh on the screen plate 230, so as to filter out the finer solid impurities. The grid 400 is conventional in the art and is not an improvement of the present application and is disclosed in many patents, such as patents CN201810366747.7, CN201821542134.6, and CN 201721044324.0.
The water filtered the solid impurities flows out from the water outlet 320 and enters the sand-adding high-efficiency clarification tank 500 through a pipeline. The high-efficiency sand-adding clarification tank 500 comprises a coagulation tank 510, a carrier injection tank 520, a flocculation tank 530 and a sedimentation tank 540 which are sequentially communicated. The mixing machine 580 is arranged in the coagulation tank 510, the carrier injection tank 520 and the flocculation tank 530. The bottom of the sedimentation tank 540 is connected with a sewage discharge pipe 550, the top of the sedimentation tank 540 is provided with a water collecting tank 542, and the water collecting tank 542 is used for collecting supernatant overflowing out of the sedimentation tank 540.
The coagulation tank 510 is communicated with the water outlet 320 through a pipeline, a coagulant is added into the coagulation tank 510, and the coagulant reacts with phosphorus in sewage to form sediment which is removed in the sedimentation tank. Meanwhile, a stirrer 580 is provided in the coagulation tank to sufficiently react by rapid mechanical stirring.
The fluid injection tank 520 is used for injecting sand to form flocs, and a stirrer 580 is provided to fully react the flocs. The main functions of the sand are as follows: the sand grains can be used as seeds for forming flocs, the sand grains improve the capture capacity of the grains, so that large and stable flocs are formed, and compared with the traditional process, the flocs formed by using the sand grains have higher density and higher stability. These flocs have higher settling velocities allowing higher upflow rates, which results in smaller equipment volumes and footprints, reducing costs.
The high-concentration sand grains greatly improve the water quality of raw water, do not generate chemical reaction, and can be separated from sludge and recycled. In addition, sand can significantly increase the reaction area to obtain good effects against flocculation difficulty generally caused by low-temperature water or muddy water.
The flocculation tank 530 requires the addition of a PAM flocculant and the flocculation stage is used to form large flocs. Flocculation is a physical mechanical process that enhances the growth of the flocculent due to intermolecular forces and physical agitation. The addition of the anionic polymer electrolyte can improve the generation of flocculating constituents through adsorption, electric neutralization and bridging between particles.
Thanks to the accelerated flocculation of the sand grains, the velocity gradient corresponds to a 10-fold conventional flocculation process with the same sedimentation performance. With limited agitation time and limited flocculation volume, high flocculation kinetics results in increased inter-particle collision probability.
In order to improve the settling speed and effect, an inclined plate 541 for settling particles and flocs is arranged at the upper end in the settling tank 540, the inclined plate 541 is positioned below the water collecting tank 542, sewage is settled after passing through the inclined plate 541, supernatant overflows from the upper end of the settling tank 540 and enters the water collecting tank 542, and the sediment is settled and gathered downwards along with the inclined plate 541.
The specific process is as follows: after flocculation, the water enters the bottom of the sedimentation basin 540 and then flows upward from the bottom of the inclined plates 541 through the channels formed between the inclined plates. The particles and flocs settle on the plates of the inclined plate and slide down due to gravity.
The large upward flow rate combined with the 60 degree inclination of the swash plate creates a continuous self-wiping process as a higher upward flow rate is allowed. There is no accumulation of flocs on the inclined plate.
The upstream of the sedimentation zone forms very good coagulation and flocculation, and the design and the material optimization of the inclined plate and the sedimentation tank, the alum floc produced by the flocculation tank is dense and easy to precipitate, most of sludge is precipitated when not entering the inclined plate zone due to the unique design of the sludge collection zone in the sedimentation tank, the sludge can be easily precipitated to the bottom of the sedimentation tank, and the inclined plate cannot be blocked due to the fact that all the sludge is precipitated to the surface of the inclined plate like the existing sedimentation tank. Therefore, the inclined plate of the sedimentation tank does not need to be washed frequently, and the common inclined plate sedimentation tank needs to be washed frequently.
Collection of water after precipitation: the supernatant is collected by a water collecting tank distributed at the top of the inclined plate and flows to subsequent treatment equipment.
In order to recycle the sand, as shown in fig. 1 and 5, the sludge settled in the sedimentation tank 540 is discharged from a sewage pipe 550 at the bottom thereof, a hydrocyclone 570 is disposed on the sewage pipe 550, the hydrocyclone 570 is used for adding the sand separated from the sludge sedimentation to the carrier injection tank 520 again, and a sand pump 560 delivers the sand and the sludge to the hydrocyclone 570. Hydrocyclones 570 separate sand from sludge and may feed the separated sand directly into a carrier injection tank. Under the action of centrifugal force, sand grains and sludge are separated: the sand is collected from the underflow and the sludge overflows from the overflow and is discharged by gravity.
In order to avoid depositing and pile up on the sedimentation tank 540 bottom is inside, sedimentation tank 540 bottom is provided with the mud scraping plate 543, the mud scraping plate 543 is connected with its rotatory mud motor 544 of driving, the mud scraping plate 543 discontinuity work can, guarantee that the sedimentation tank 540 inner wall does not pile up the sediment can.
This design prevents large-scale solid-state impurity to enter into lift pump 110 and follow-up pipeline through filter plate 230, and baffle 240 is in addition set up in filter plate 230 top, compares in setting up interception filter screen 200 into the traditional setting of monoblock filter plate 230, and this application can avoid floating solid (for example, plastic bag) to twine filter plate 230 on with filter plate 230's mesh jam, leads to the circulation of sewage to worsen. This design sets up baffle 240 through the top and solves this problem ingeniously for sewage circulates from the below. The floating solid object can be salvaged manually or by a machine, and the floating object can be prevented from being wound on the filter screen plate 230, so that the subsequent salvage is facilitated.
The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.
Claims (9)
1. The utility model provides a river pollution's sewage pretreatment of damming system is put to rainwater which characterized in that includes:
a water collecting tank (100) for storing the inflowing sewage, wherein a lifting pump (110) is arranged in the water collecting tank;
the intercepting filter screen (200) is arranged in the water collecting tank (100) and separates sewage flowing into the water collecting tank (100) from the lift pump (110), the intercepting filter screen (200) comprises a filter screen plate (230) and a baffle plate (240), the baffle plate (240) is overlapped above the filter screen plate (230), and the filter screen plate (230) is provided with meshes through which the sewage passes;
the water inlet (310) is communicated with the lift pump (110), and a grating (400) for filtering sewage is arranged between the water inlet (310) and the water outlet (320);
the sand adding high-efficiency clarification tank (500) comprises a coagulation tank (510), a carrier injection tank (520), a flocculation tank (530) and a sedimentation tank (540) which are communicated in sequence; coagulation basin (510) and delivery port (320) intercommunication, annotate carrier pond (520) and be used for throwing into the sand grain, all install mixer (580) in coagulation basin (510), notes carrier pond (520) and flocculation basin (530), sedimentation basin (540) bottom is connected with blow off pipe (550), sedimentation basin (540) top is provided with water catch bowl (542) that are used for collecting the supernatant of overflow outflow sedimentation basin (540).
2. The intercepting sewage pretreatment system for river pollution discharge by rainwater according to claim 1, wherein: the bottom of the sedimentation tank (540) is provided with a mud scraping plate (543), and the mud scraping plate (543) is connected with a mud scraping motor (544) for driving the mud scraping plate to rotate.
3. The intercepting sewage pretreatment system for river pollution discharge by rainwater according to claim 1, wherein: an inclined plate (541) for settling particles and flocs is arranged at the upper end in the sedimentation tank (540), and the inclined plate (541) is positioned below the water collecting tank (542).
4. The intercepting sewage pretreatment system for river pollution discharge by rainwater according to claim 3, wherein: the inclined plate (541) and the horizontal plane form an included angle of 60 degrees.
5. The intercepting sewage pretreatment system for river pollution discharge by rainwater according to claim 1, wherein: the drainage pipe (550) is provided with a hydrocyclone (570), and the hydrocyclone (570) is used for adding the sand separated from the sludge sediment into the carrier injection pool (520) again.
6. The intercepting sewage pretreatment system for river pollution discharge by rainwater according to claim 1, wherein: intercepting filter screen (200) still includes frame (210), center (220) are located two frames (210) in the middle of, install respectively on frame (210) and center (220) that correspond with it on filter screen board (230) both sides and baffle (240) both sides.
7. The intercepting sewage pretreatment system for river pollution discharge by rainwater according to claim 6, wherein: the intercepting filter screen (200) further comprises a cover plate (250), and the cover plate (250) is covered at the upper ends of the frame (210) and the middle frame (220) to limit the filter screen plate (230) and the baffle plate (240).
8. The intercepting sewage pretreatment system for river pollution discharge by rainwater according to claim 7, wherein: the middle frame (220) is provided with a first mounting hole (222) extending vertically, the cover plate (250) is provided with a second mounting hole (251) matched with the first mounting hole (222), and fasteners are mounted in the first mounting hole (222) and the second mounting hole (251).
9. The intercepting sewage pretreatment system for river pollution discharge by rainwater according to claim 8, wherein: a handle (242) is arranged on one side, facing the lifting pump (110), of the baffle (240).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921830923.4U CN211339081U (en) | 2019-10-28 | 2019-10-28 | River pollution's sewage pretreatment system dams is put to rainwater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921830923.4U CN211339081U (en) | 2019-10-28 | 2019-10-28 | River pollution's sewage pretreatment system dams is put to rainwater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112978967A (en) * | 2021-05-11 | 2021-06-18 | 中国恩菲工程技术有限公司 | Sewage damming and lifting system |
| CN113104943A (en) * | 2021-04-15 | 2021-07-13 | 张婉琴 | Emergency treatment method for sudden coal water slurry pollution accident of riverway |
| CN116688600A (en) * | 2023-07-31 | 2023-09-05 | 湖南三友环保科技有限公司 | Sewage filtering equipment |
-
2019
- 2019-10-28 CN CN201921830923.4U patent/CN211339081U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113104943A (en) * | 2021-04-15 | 2021-07-13 | 张婉琴 | Emergency treatment method for sudden coal water slurry pollution accident of riverway |
| CN112978967A (en) * | 2021-05-11 | 2021-06-18 | 中国恩菲工程技术有限公司 | Sewage damming and lifting system |
| CN116688600A (en) * | 2023-07-31 | 2023-09-05 | 湖南三友环保科技有限公司 | Sewage filtering equipment |
| CN116688600B (en) * | 2023-07-31 | 2023-12-08 | 湖南三友环保科技有限公司 | Sewage filtering equipment |
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Denomination of utility model: A intercepting sewage pretreatment system for rainwater drainage pollution Effective date of registration: 20220318 Granted publication date: 20200825 Pledgee: Huarong Bank of Xiangjiang Limited by Share Ltd. Changsha branch Pledgor: Hunan Sanyou Environmental Protection Technology Co.,Ltd. Registration number: Y2022430000018 |
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Date of cancellation: 20231116 Granted publication date: 20200825 Pledgee: Huarong Bank of Xiangjiang Limited by Share Ltd. Changsha branch Pledgor: Hunan Sanyou Environmental Protection Technology Co.,Ltd. Registration number: Y2022430000018 |