CN201873560U - Improved buffer board for secondary sedimentation tank - Google Patents
Improved buffer board for secondary sedimentation tank Download PDFInfo
- Publication number
- CN201873560U CN201873560U CN2010206096217U CN201020609621U CN201873560U CN 201873560 U CN201873560 U CN 201873560U CN 2010206096217 U CN2010206096217 U CN 2010206096217U CN 201020609621 U CN201020609621 U CN 201020609621U CN 201873560 U CN201873560 U CN 201873560U
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- dash plate
- perforate
- buffer board
- secondary sedimentation
- plate
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Abstract
The utility model discloses an improved buffer board for a secondary sedimentation tank. The improved buffer board comprises a first buffer board and a second buffer board, which form angles of 45 DEG with the tank wall and are vertically and symmetrically mounted on the tank wall; stainless steel brackets are arranged at the two ends of the first buffer board and those of the second buffer board; and openings are formed on the first buffer board and the second buffer board. Openings on the first buffer board include a first opening and a second opening; the second opening is formed on one side of the first buffer board clung to the tank wall; the first opening is formed on the other side of the first buffer board; and the size of the first opening is larger than that of the second opening. Under the condition of higher load of the sedimentation tank, the improved buffer board can still reduce the suspended solid in the effluent water by 30 percent, is void of operation cost and only has a little maintenance cost.
Description
Technical field
The utility model relates to sewage treatment area, especially a kind of improved secondary sedimentation basins dash plate.
Background technology
In conventional sewage disposal, removing suspended substance by the gravitational settling effect is present the most frequently used method, and settling tank is exactly the density difference that utilizes between the solid-liquid two-phase, makes density sink greater than the solid phase of liquid phase, thereby realizes the water treatment building of solid-liquid separation.Can be divided into primary sedimentation pond and secondary sedimentation basins according to the position of settling tank in treatment scheme.Primary sedimentation pond is positioned at before the biological treatment structures, mainly act as the content that reduces suspended substance in the water inlet.
Secondary sedimentation basins then is different from other settling tanks.In traditional sewage biological treatment system, secondary sedimentation basins is located at after the biological treatment structures, as the part of biological treatment usually.The effect of secondary sedimentation basins in biological treatment mainly is precipitation and thickened sludge, to guarantee that the concentration of suspension in the water outlet reaches emission request, keep concentration of activated sludge in the biological treatment structures by the backflow of mud simultaneously, guarantee biological treatment system steady running.And because temporary storage mud is also wanted in the variation of the water yield and water quality.The operation conditions of secondary sedimentation basins has material impact to the treatment effect of entire sewage treatment system.Enter the active sludge intermixture concentration height (2000-8000mg/L) of secondary sedimentation basins, have flocculating property, the mutual interference of particle phase belongs to the stratification precipitation.Interface is clearly arranged between the muddy water during precipitation, and flco is formed whole common sinking.The density of active sludge density and water is approaching, is easily taken away by water, and is easy to generate secondary stream and density flow phenomenon.
Density flow in the settling tank can quicken come-up stream near pool wall, cause the increase to the suction function of pool bottom sludge, and then causes that the water outlet concentration of suspension rises.In order to weaken this burst come-up stream, can on precipitation pool side wall, add dash plate usually, for example single face dash plate and two-sided dash plate.The sort buffer plate be widely used in abroad second pond pool wall come-up stream control in.After precipitation pool side wall was provided with two plate buffering systems, when come-up stream ran into baffle plate, direction changed and departs from pool wall, return again in the eddy current of settling tank main body and carry out secondary sedimentation, thereby avoided suspended substance that come-up stream carries under one's arms directly everywhere water flow out.
The utility model content
The purpose of this utility model is to propose a kind of settling tank dash plate, can effectively reduce suspended substance in the water, realizes efficiently precipitation.
For reaching above purpose, the solution that the utility model adopted is:
A kind of improved secondary sedimentation basins dash plate, comprise first dash plate and second dash plate, its with pool wall all become miter angle and up and down symmetry be installed on the pool wall, first dash plate and the second dash plate two ends are provided with support, are equipped with perforate on first dash plate and second dash plate.
Described first dash plate adopts nut to fixedly connected with the second dash plate intersection.
Perforate on described first dash plate comprises first perforate and second perforate, and second perforate is located at first dash plate and is close to pool wall one side, and opposite side is located in first perforate, and first bore size is greater than second perforate.
Described first perforate is many rows, and it is of a size of 50mm * 50mm, and the between centers in hole is 200mm between adjacent two rows, and the between centers in hole is 240mm between adjacent two row.
Described second perforate is a row, and it is of a size of 50mm * 25mm.
Perforate on described second dash plate comprises the 3rd perforate, and it is located at second dash plate along the pool wall side.
Described the 3rd perforate is a row, and it is of a size of 470mm * 200mm, and pitch of holes is 200mm.
Also be provided with a plurality of fixing feet of fixing second dash plate on described second dash plate.
Described first dash plate and second dash plate are provided with near the pool wall side first dash plate, second dash plate are fixed in the expansion bolt on the pool wall.
Owing to adopted such scheme, the utlity model has following characteristics: the flow characteristics influence to secondary sedimentation basins integral body is less; Effective subsidence volumn influence to secondary sedimentation basins is little; Not adding any chemical agent can not exert an influence to the performance of active sludge; The content of suspended solids in can effective persistent minimizing water outlet, no working cost only has a little maintenance expense.
Description of drawings
Fig. 1 is the two unitary axonometric drawings of plate buffering system of second pond of the present utility model.
Fig. 2 is the synoptic diagram of first dash plate of the present utility model.
Fig. 3 is the synoptic diagram of second dash plate of the present utility model.
Fig. 4 is the two unitary vertical planning drawing of plate buffering system of second pond of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing illustrated embodiment the utility model is further described.
The utility model is at existing two-sided dash plate, and the design of this two-sided dash plate is improved.Carry out perforate at the top dash plate, and adjusted the perforate size of bottom dash plate, to adjust the fluidised form of baffle plate inner compartment.After upwelling runs into baffle plate, a part departs from the eddy current that pool wall enters the settling tank main body, another part enters two plate buffering system inside by the perforate of bottom dash plate, because top dash plate percentage of open area is big than the bottom dash plate, current flow velocity in the process that rises reduces gradually, makes and can't be precipitated removal by sedimentary mud granule under original fluidised form.Settled mud part subsides under shield is slided back, and from descending the hole to drain into settling tank bottom sludge blanket, another part and the muddy water mixed solution that enters from following hole mix, to a certain degree filteration is played in water inlet, also reach simultaneously the purpose of flocculation again, it is big that floc particle becomes, and settling property improves, finally from discharging the hole down.Two plate buffering systems after the utility model improves under settling tank is loaded condition with higher, increase and can reduce in the water outlet by 30% suspended solids after this dual platen buffering system.
The two plate buffering systems of second pond are installed on the secondary sedimentation basins pool wall.Dash plate is topmost apart between the water surface 0.8m-0.9m; Distance is greater than 1m at the bottom of the pond bottom, and dash plate can not enter sludge blanket.Two plate buffering system cell width 1.9m can change according to the settling tank practical situation.As shown in Figure 1, each two plate buffering system unit is made up of first dash plate 7 and second dash plate 8, make by stainless steel plate, with pool wall all become miter angle and up and down symmetry install, promptly the cross section of this first dash plate 7, second dash plate 8 and the pool wall installed is an isosceles right triangle.First dash plate 7 is fixedlyed connected by nut 6 with second dash plate, 8 intersections.Two ends at first dash plate 7 and second dash plate 8 are provided with stainless steel stent 5, be used for fixing first dash plate 7 and second dash plate 8, and all have expansion bolt 9 that first dash plate 7, second dash plate 8 are fixed on the pool wall near the position of pool wall at first dash plate 7, second dash plate 8.The 7 even perforates of first dash plate, second dash plate 8 are only having perforate near near the pool wall.First perforate, 2 sizes of first dash plate 7 are 50mm * 50mm, and totally 5 rows 7 are listed as, and the between centers in hole is 200mm between adjacent two rows, and the between centers in hole is 240mm between adjacent two row.First dash plate 7 is close to pool wall and is provided with one and ranked second perforate 1 size and be 50mm * 25mm.It is 470mm * 200mm that second dash plate 8 is provided with a size that ranked third perforate 3, the three perforates 3 along pool wall, and its spacing is 200mm, and establishes 4 one of fixing feet every 530mm and be used for fixing second dash plate 8.First dash plate 7 and second dash plate 8 can be made respectively.During construction, earlier first dash plate 7 and second dash plate, 8 usefulness nuts 6 are separately fixed on the stainless steel stent 5, and with expansion bolt 9 first dash plate 7 and second dash plate 8 are fixed on the pool wall, two plate intersections are fixedly connected by nut 6.
The above-mentioned description to embodiment is can understand and use the utility model for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the utility model is not limited to the embodiment here, and those skilled in the art should be within protection domain of the present utility model for improvement and modification that the utility model is made according to announcement of the present utility model.
Claims (9)
1. improved secondary sedimentation basins dash plate, it is characterized in that: comprise first dash plate and second dash plate, its with pool wall all become miter angle and up and down symmetry be installed on the pool wall, first dash plate and the second dash plate two ends are provided with support, are equipped with perforate on first dash plate and second dash plate.
2. secondary sedimentation basins dash plate as claimed in claim 1 is characterized in that: described first dash plate adopts nut to fixedly connected with the second dash plate intersection.
3. secondary sedimentation basins dash plate as claimed in claim 1, it is characterized in that: the perforate on described first dash plate comprises first perforate and second perforate, second perforate is located at first dash plate and is close to pool wall one side, and opposite side is located in first perforate, and first bore size is greater than second perforate.
4. secondary sedimentation basins dash plate as claimed in claim 3 is characterized in that: described first perforate is many rows, and it is of a size of 50mm * 50mm, and the between centers in hole is 200mm between adjacent two rows, and the between centers in hole is 240mm between adjacent two row.
5. secondary sedimentation basins dash plate as claimed in claim 3 is characterized in that: described second perforate is a row, and it is of a size of 50mm * 25mm.
6. secondary sedimentation basins dash plate as claimed in claim 1 is characterized in that: the perforate on described second dash plate comprises the 3rd perforate, and it is located at second dash plate along the pool wall side.
7. secondary sedimentation basins dash plate as claimed in claim 6 is characterized in that: described the 3rd perforate is a row, and it is of a size of 470mm * 200mm, and pitch of holes is 200mm.
8. secondary sedimentation basins dash plate as claimed in claim 1 is characterized in that: also be provided with a plurality of fixing feet of fixing second dash plate on described second dash plate.
9. secondary sedimentation basins dash plate as claimed in claim 1 is characterized in that: described first dash plate and second dash plate are provided with near the pool wall side first dash plate, second dash plate are fixed in the expansion bolt on the pool wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206096217U CN201873560U (en) | 2010-11-16 | 2010-11-16 | Improved buffer board for secondary sedimentation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206096217U CN201873560U (en) | 2010-11-16 | 2010-11-16 | Improved buffer board for secondary sedimentation tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201873560U true CN201873560U (en) | 2011-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206096217U Expired - Fee Related CN201873560U (en) | 2010-11-16 | 2010-11-16 | Improved buffer board for secondary sedimentation tank |
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| Country | Link |
|---|---|
| CN (1) | CN201873560U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110723867A (en) * | 2019-09-12 | 2020-01-24 | 上海井园市政工程有限公司 | Municipal administration sewage treatment system |
-
2010
- 2010-11-16 CN CN2010206096217U patent/CN201873560U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110723867A (en) * | 2019-09-12 | 2020-01-24 | 上海井园市政工程有限公司 | Municipal administration sewage treatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20131116 |