CN109806625B - Structure of sedimentation tank and method for repairing uneven sedimentation - Google Patents
Structure of sedimentation tank and method for repairing uneven sedimentation Download PDFInfo
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- CN109806625B CN109806625B CN201910246853.6A CN201910246853A CN109806625B CN 109806625 B CN109806625 B CN 109806625B CN 201910246853 A CN201910246853 A CN 201910246853A CN 109806625 B CN109806625 B CN 109806625B
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- paraffin
- groove
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- overflow
- sedimentation
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- 238000004062 sedimentation Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000012188 paraffin wax Substances 0.000 claims abstract description 59
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 229940057995 liquid paraffin Drugs 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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Abstract
The invention discloses a structure of a sedimentation tank and a method for repairing uneven sedimentation, belonging to the field of water supply and drainage engineering. The sedimentation tank mainly comprises a tank bottom, a tank wall, a catchment ditch wall and a catchment ditch, and is provided with an auxiliary pipeline comprising a water inlet pipe, a central pipe and a mud discharge pipe. The reinforced concrete tank wall top has the paraffin groove, has the paraffin of filling in the paraffin inslot, and the bottom of overflow plate inserts in the paraffin. After the foundation subsides unevenly, only the outer surface of the paraffin groove in the corresponding section is heated by a spray gun, so that the height of the top end of the overflow plate can be conveniently and rapidly adjusted, the water outlet heights around the sedimentation tank are ensured to be the same, and the water outlet is uniform in all directions; the method is convenient and rapid to repair diseases caused by uneven sedimentation, and avoids the phenomenon that overflow is uneven in all directions and the sedimentation effect is influenced.
Description
Technical Field
The invention relates to the field of water supply and drainage engineering, in particular to a structure of a sedimentation tank and a method for repairing uneven sedimentation.
Background
The sedimentation tank is a structure for removing suspended matters in water by sedimentation, and is a facility for purifying water quality. The suspended substances in the water are removed by utilizing the natural precipitation or coagulating sedimentation effect of the water. Sedimentation tanks are widely used in wastewater treatment. The sedimentation effect depends on the flow rate of the water in the sedimentation tank and the residence time of the water in the tank. The sedimentation tank is divided into a horizontal sedimentation tank and a vertical sedimentation tank according to the water flow direction, and the latter is also called a vertical sedimentation tank. The plane of the tank body of the vertical sedimentation tank is round or square. The wastewater is discharged into the sedimentation tank from top to bottom through a central pipe arranged in the center of the sedimentation tank, and an umbrella-shaped baffle is arranged at the bottom end of the central pipe, so that the wastewater is uniformly distributed in the sedimentation tank and then slowly rises along the whole section of the sedimentation tank. The suspended matter is settled into a conical sludge hopper at the bottom of the tank under the action of gravity, and clarified water is discharged from an overflow weir around the upper end of the tank. A slag groove and a baffle plate can be arranged in front of the overflow weir to ensure the quality of the discharged water. The sedimentation tank has small occupied area, large depth and conical bottom, thereby saving the land.
Due to uneven variation of the groundwater level, the vertical sedimentation tank may be inclined, so that the height Cheng Fasheng of the top end of the overflow weir is changed. Thereby changing the flow field in the overflow pool, a large amount of water flows out from the overflow weir with low elevation, and the flow speed at the overflow weir is increased. The large flow rate can cause a large amount of water to carry out suspended matters, and the internal sedimentation effect is affected. .
Disclosure of Invention
The invention aims to solve the defects and problems in the prior art and provides a structure of a sedimentation tank and a method for repairing uneven sedimentation.
The invention provides a sedimentation tank structure and a method for repairing uneven sedimentation, the sedimentation tank structure mainly comprises a tank bottom, a tank wall, a catchment ditch, and is provided with an attached water inlet pipe, a central pipe and a mud discharging pipe, and is characterized in that: the tank wall is made of reinforced concrete, a paraffin groove is arranged above the tank wall, the paraffin groove is fixed at the upper end of the tank wall through a connecting plate, filled paraffin is arranged in the paraffin groove, and the bottom end of the overflow plate is inserted into the paraffin; the overflow plate is divided into a plurality of large sections along the periphery of the sedimentation tank, gaps are reserved among the large sections, elastic rubber strips are plugged into the gaps, and the bottom ends of the elastic rubber strips are also inserted into paraffin; the method for repairing the differential settlement of the sedimentation tank comprises the following main steps of:
(1) Continuously slotting along the top surface of the wall of the sedimentation tank, wherein the groove is positioned in the middle of the cross section of the wall;
(2) Manufacturing a plurality of groups of paraffin grooves with the length of 3-5 meters, connecting plates and sections of overflow plates in a factory, wherein the lengths of the paraffin grooves, the connecting plates and the sections of the overflow plates in each group are the same, and welding the connecting plates along the central line of the bottom surface of the paraffin groove; after each segment is transported to a construction site, the segments are respectively and transversely connected into a plurality of large segments;
(3) Inserting the connecting plate end of the combined large section of the connecting plate and the paraffin groove into a groove on the top surface of the pool wall, sequentially welding each adjacent section, and properly cutting the combined section on one side before the last joint welding; the large sections of the overflow plates are welded together, called a sector, and are welded together into a plurality of large sectors;
(4) Filling epoxy resin glue solution into the groove on the top surface of the tank wall, and fixing the combination of the connecting plate and the paraffin groove;
(5) Filling paraffin which is roasted into liquid paraffin into the paraffin groove, and fixing overflow plates of all the sectors so that the top elevations of the overflow plates are the same; a gap of one centimeter is reserved between the overflow plates of each large sector, a compressed elastic rubber strip is inserted into the gap, and the bottom end of the elastic rubber strip is also inserted into paraffin.
Preferably, the paraffin groove, the connecting plate and the overflow plate are made of stainless steel.
The scheme changes the conventional design of the overflow weir part of the sedimentation tank, and designs the overflow height around the whole sedimentation tank to be adjustable, thereby bringing obvious benefits compared with the prior art. The characteristic of low paraffin melting point is fully utilized, and after non-uniform sedimentation occurs again in the sedimentation tank, the tank wall of the paraffin tank can be roasted by a liquefied gas flame gun, so that the top elevation of the overflow plate can be quickly adjusted; the paraffin is low in price, so that the repair cost is low; the novel overflow structure has unique structure, and is convenient for heating and melting paraffin; the scheme can be used for a new sedimentation tank and can also be used for modifying the existing sedimentation tank.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention.
FIG. 2 is a schematic cross-sectional view of a portion of the top of a pool wall.
The marks in the figure are as follows: 1-pool wall, 2-catchment ditch wall, 3-catchment ditch, 4-pool bottom, 5-water inlet pipe, 6-connecting plate, 7-paraffin tank, 8-paraffin, 9-overflow plate, 10-central pipe and 11-mud discharge pipe.
Detailed Description
The following is a specific embodiment of the present invention, and the technical solution of the present invention is described with reference to the accompanying drawings, but the present invention is not limited to this embodiment.
Example 1
The embodiment is a circular vertical sedimentation tank and the repair of uneven sedimentation thereof, and the schematic cross section of the sedimentation tank before repair is shown in fig. 1. The main components of the sedimentation tank comprise a conical tank bottom 4, a tank wall 1 made of reinforced concrete, a catchment ditch 3, and an auxiliary water inlet pipe 5, a central pipe 10 and a mud discharging pipe 11. The catchment ditch wall 2 and the corresponding pool wall 1 and the ditch bottom connecting the two together form a catchment ditch 3. The inner diameter of the sedimentation tank is 12 meters, the wall thickness of the tank wall 1 is 40 centimeters, the height of the tank wall 1 is 6 meters, and the height of the tank bottom 4 is 4 meters. The water inlet pipe 5, the central pipe 10 and the mud discharging pipe 11 are PVC (polyvinyl chloride) plastic pipes, and the material is light, so that the construction and the fixation are convenient. The inner diameters of the water inlet pipe 5 and the mud discharging pipe 11 are 22 cm, and the inner diameter of the central pipe 10 is 26 cm. After a plurality of years of use, the sedimentation tank is found to have uneven sedimentation, the overflow water quantity on one side is obviously reduced, the corresponding overflow water quantity on the other side is obviously larger, the outlet water flow rate on the larger side is fast, and the overflowed water is more turbid. The scheme in this application is adopted in the restoration design, and in the new sedimentation tank structure, there is paraffin groove 7 in the pool wall 1 top, has the paraffin 8 of filling in the paraffin groove 7, and in the paraffin 8 was inserted to the bottom of overflow plate 9, paraffin groove 7 was fixed in pool wall 1 upper end through connecting plate 6. The bottom end of the connecting plate 6 is pre-buried in the concrete at the upper end of the pool wall 1. The overflow plate 9 is divided into 4 large sections along the periphery of the sedimentation tank, gaps of 10 mm are formed between the large sections, elastic rubber strips are plugged into the gaps, and the bottom ends of the elastic rubber strips are also inserted into the paraffin 8. The paraffin tank 7, the connecting plate 6 and the overflow plate 9 are made of stainless steel, and the thickness of the steel is 4 mm. The height of the connecting plate 6 is 40 cm, and the height of the exposed part is 20 cm. The paraffin groove 7 has an inner width of 20 mm and an inner height of 26 cm. The overflow plate 9 has a height of 40 cm, and the bottom end of the overflow plate is inserted into the paraffin groove 7 and is 13 cm away from the inner bottom surface of the paraffin groove 7. Before the repair construction of the differential settlement, the top elevation of the overflow plate 9 is measured along the periphery of the sedimentation tank, and the top elevation adjustment amount of the overflow plate 9 at each place is determined. After water of 1 m depth in the sedimentation tank is pumped out, the top elevation of the overflow plate 9 is adjusted. The subsequent repair construction mainly comprises the following steps:
(1) The top surface of the pool wall 1 of the sedimentation pool is continuously grooved, the groove is positioned in the middle of the cross section of the pool wall 1, the depth of the groove is 20 cm, and the width of the groove is 10 mm;
(2) Manufacturing 20 groups of sections of the paraffin groove 7, the connecting plate 6 and the overflow plate 9 with the length of 3.85 meters in a factory, and welding the connecting plate 6 along the bottom center line of the paraffin groove 7; after each segment is transported to a construction site, 5 segments are transversely welded into a large segment respectively; the paraffin groove 7, the connecting plate 6 and the overflow plate 9 are respectively provided with 4 large sections;
(3) The connecting plate 6 and the connecting plate 6 end of the combined large section of the paraffin groove 7 are inserted into the groove on the top surface of the pool wall 1, each adjacent section is welded in sequence, and the combined section on one side can be cut properly before the last joint is welded;
(4) Filling epoxy resin glue solution into the groove on the top surface of the pool wall 1, and fixing the combination of the connecting plate 6 and the paraffin groove 7;
(5) Placing large sections of 4 overflow plates 9 in a paraffin groove 7, cutting one side of one large section to enable gaps among the large sections of each overflow plate 9 to be 10 millimeters, filling liquid paraffin 8 which is roasted into the paraffin groove 7, and sequentially fixing the large sections of the 4 overflow plates 9 to enable the top elevations of the overflow plates to be the same; simultaneously, a compressed elastic rubber strip is inserted into each gap, and the bottom end of the elastic rubber strip is also inserted into the paraffin 8.
The foregoing description of the specific embodiments is provided for the purpose of illustration only and is not intended to limit the scope of the claims.
Claims (2)
1. The utility model provides a restoration method of sedimentation tank's differential settlement, the sedimentation tank mainly include bottom of the pool, pool wall, catchment ditch to have affiliated inlet tube, center tube and mud pipe, its characterized in that: the tank wall is made of reinforced concrete, a paraffin groove is arranged above the tank wall, the paraffin groove is fixed at the upper end of the tank wall through a connecting plate, filled paraffin is arranged in the paraffin groove, and the bottom end of the overflow plate is inserted into the paraffin; the overflow plate is divided into a plurality of large sections along the periphery of the sedimentation tank, gaps are reserved among the large sections, elastic rubber strips are plugged into the gaps, and the bottom ends of the elastic rubber strips are also inserted into paraffin; the method for repairing the differential settlement of the sedimentation tank comprises the following main steps of:
(1) Continuously slotting along the top surface of the wall of the sedimentation tank, wherein the groove is positioned in the middle of the cross section of the wall;
(2) Manufacturing a plurality of groups of paraffin grooves with the length of 3-5 meters, connecting plates and sections of overflow plates in a factory, wherein the lengths of the paraffin grooves, the connecting plates and the sections of the overflow plates in each group are the same, and welding the connecting plates along the central line of the bottom surface of the paraffin groove; after each segment is transported to a construction site, the segments are respectively and transversely connected into a plurality of large segments;
(3) Inserting the connecting plate end of the combined large section of the connecting plate and the paraffin groove into a groove on the top surface of the pool wall, sequentially welding each adjacent section, and properly cutting the combined section on one side before the last joint welding; the large sections of the overflow plates are welded together, called a sector, and are welded together into a plurality of large sectors;
(4) Filling epoxy resin glue solution into the groove on the top surface of the tank wall, and fixing the combination of the connecting plate and the paraffin groove;
(5) Filling paraffin which is roasted into liquid paraffin into the paraffin groove, and fixing overflow plates of all the sectors so that the top elevations of the overflow plates are the same; a gap of one centimeter is reserved between the overflow plates of each large sector, a compressed elastic rubber strip is inserted into the gap, and the bottom end of the elastic rubber strip is also inserted into paraffin.
2. A method for repairing differential settlement of a settling tank as claimed in claim 1, wherein: the paraffin groove, the connecting plate and the overflow plate are made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246853.6A CN109806625B (en) | 2019-03-29 | 2019-03-29 | Structure of sedimentation tank and method for repairing uneven sedimentation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246853.6A CN109806625B (en) | 2019-03-29 | 2019-03-29 | Structure of sedimentation tank and method for repairing uneven sedimentation |
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| Publication Number | Publication Date |
|---|---|
| CN109806625A CN109806625A (en) | 2019-05-28 |
| CN109806625B true CN109806625B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910246853.6A Active CN109806625B (en) | 2019-03-29 | 2019-03-29 | Structure of sedimentation tank and method for repairing uneven sedimentation |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100759846B1 (en) * | 2006-10-17 | 2007-09-18 | (주)범한엔지니어링 종합건축사 사무소 | Rectangular sedimentation basin include suspension type overflow weir and trough |
| KR20090129155A (en) * | 2008-06-12 | 2009-12-16 | (주) 그린텍 | Installation structure of overflow weir for sedimentation tank |
| JP6183525B1 (en) * | 2016-09-23 | 2017-08-23 | 栗田工業株式会社 | Coagulation sedimentation equipment |
| CN206492258U (en) * | 2017-02-24 | 2017-09-15 | 蔡雪峰 | A kind of vertical sedimentation basin reinforced concrete structure |
| CN206843288U (en) * | 2017-05-10 | 2018-01-05 | 福建利河伯科技有限公司 | Adjustable sewage integrated treatment unit |
| CN208641886U (en) * | 2018-07-27 | 2019-03-26 | 芜湖沃泰环保科技有限公司 | A kind of tooth form overflow plate mechanism of liftable adjustment |
| CN209997248U (en) * | 2019-03-29 | 2020-01-31 | 郑州大学 | kinds of settling ponds |
-
2019
- 2019-03-29 CN CN201910246853.6A patent/CN109806625B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100759846B1 (en) * | 2006-10-17 | 2007-09-18 | (주)범한엔지니어링 종합건축사 사무소 | Rectangular sedimentation basin include suspension type overflow weir and trough |
| KR20090129155A (en) * | 2008-06-12 | 2009-12-16 | (주) 그린텍 | Installation structure of overflow weir for sedimentation tank |
| JP6183525B1 (en) * | 2016-09-23 | 2017-08-23 | 栗田工業株式会社 | Coagulation sedimentation equipment |
| CN206492258U (en) * | 2017-02-24 | 2017-09-15 | 蔡雪峰 | A kind of vertical sedimentation basin reinforced concrete structure |
| CN206843288U (en) * | 2017-05-10 | 2018-01-05 | 福建利河伯科技有限公司 | Adjustable sewage integrated treatment unit |
| CN208641886U (en) * | 2018-07-27 | 2019-03-26 | 芜湖沃泰环保科技有限公司 | A kind of tooth form overflow plate mechanism of liftable adjustment |
| CN209997248U (en) * | 2019-03-29 | 2020-01-31 | 郑州大学 | kinds of settling ponds |
Non-Patent Citations (1)
| Title |
|---|
| 合流溢流污水高效沉淀池计算机模拟研究;姜震宇;;城市道桥与防洪(09);第274-278页 * |
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| CN109806625A (en) | 2019-05-28 |
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