CN203763916U - Aerobic sludge settling device - Google Patents
Aerobic sludge settling device Download PDFInfo
- Publication number
- CN203763916U CN203763916U CN201420069963.2U CN201420069963U CN203763916U CN 203763916 U CN203763916 U CN 203763916U CN 201420069963 U CN201420069963 U CN 201420069963U CN 203763916 U CN203763916 U CN 203763916U
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- CN
- China
- Prior art keywords
- circular cone
- cylindrical shell
- aerobic sludge
- drum body
- cone plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000010802 sludge Substances 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000004062 sedimentation Methods 0.000 claims description 28
- 239000010865 sewage Substances 0.000 abstract description 13
- 238000005273 aeration Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005842 biochemical reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Activated Sludge Processes (AREA)
Abstract
The utility mode discloses an aerobic sludge settling device in order to solve the problems of low space-utilization rate, poor aerobic sludge settling efficiency and the like of an existing device. The aerobic sludge settling device is provided with a settling area drum body (1) and an overflow area drum body (2). The settling area drum body is composed of a cylindrical drum body (13) at the upper part and an inversely conical drum body (14) at the lower part. The top end of the overflow area drum body is provided with a cover hood, and the bottom end of the overflow area drum body is connected with the outer edge of an annular bottom plate; the annular bottom plate is provided with a water discharge pipe (5); the cover hood is provided with a gas discharge pipe (4). The cylindrical drum body of the settling area drum body is internally provided with a water inlet distributor (7), and the bottom of the inversely conical drum body is provided with a sludge returning pipe (8). The water inlet distributor is composed of an upper conical plate (10) and a lower conical plate (11) between which a flow passage is formed; the top of the upper conical plate is connected with an outlet of a water feed pipe (6). The aerobic sludge settling device is mainly used for aerobic sludge settlement in the field of aerobic treatment on sewage.
Description
Technical field
The utility model belongs to sewage aerobic processing technology field, relates to a kind of aerobic sludge sedimentation device.
Background technology
The aerobic sludge sedimentation device that at present sewage aerobic process field is used generally adopts the pond body structure of flat flow, and sewage is from an overflow area to another overflow area, and in overflow area, realizes the sedimentation of aerobic sludge; Or the sedimentation that a lot of parallel baffling swash plates are realized aerobic sludge is set in a pond body.The problem that said apparatus exists is, because inner member is more or have aerobic sludge deposition dead angle, to make the space availability ratio of settling tank lower; The sewage speed flowing into, there is turbulent flow or turbulent flow in part, makes the settling efficiency of aerobic sludge poor.At the bottom of the pond of settling tank, be larger flat in addition, be difficult to make the aerobic sludge settling down to be back in aerobic fluidized-bed bioreactor or aerobic aeration pond to improve the reaction efficiency of aerobic biochemical reaction.
Summary of the invention
The purpose of this utility model is to provide a kind of aerobic sludge sedimentation device, to solve the problems such as the existing space availability ratio of existing aerobic sludge sedimentation device settling efficiency lower, aerobic sludge is poor.
For addressing the above problem, the technical solution adopted in the utility model is: a kind of aerobic sludge sedimentation device, it is characterized in that: it is provided with decanting zone cylindrical shell, overflow area cylindrical shell, decanting zone cylindrical shell is comprised of the cylindrical drum on top and the inverted conical face shape cylindrical shell of bottom, the top of cylindrical drum is provided with downflow weir, outer wall around cylindrical drum top is provided with annular base plate, the bottom of overflow area cylindrical shell is connected with the outward flange of annular base plate, annular base plate is provided with drainpipe, the top of overflow area cylindrical shell is provided with calotte, calotte is provided with blast pipe, in the cylindrical drum of decanting zone cylindrical shell, be provided with inlet distribution device, the bottom of inverted conical face shape cylindrical shell is provided with mud return line, inlet distribution device is comprised of upper circular cone plate and lower circular cone plate, between upper circular cone plate and lower circular cone plate, form runner, the bottom of two circular cone plates is in same level, the top of upper circular cone plate is connected with the outlet of water inlet pipe.
Adopt the utility model, there is following beneficial effect: the inner member of (1) decanting zone cylindrical shell is few, only has an inlet distribution device, and do not exist aerobic sludge to deposit dead angle, therefore the interior zone of decanting zone cylindrical shell can, to greatest extent for the sedimentation of aerobic sludge, make space availability ratio of the present utility model higher.(2) adopt inlet distribution device of the present utility model, the current cross-sectional area that can make to flow into the sewage in the cylindrical shell of decanting zone becomes large, Speed Reduction, thereby the rapid subsidence that is conducive to aerobic sludge, reduce to form turbulent flow or turbulent flow chance, make the more stably sedimentation of active aerobic sludge.So just make the settling efficiency of aerobic sludge higher, effect of settling is better.(3) the utility model is in operating process, aerobic sludge finally falls into the inverted conical face shape cylindrical shell of cylindrical shell bottom, decanting zone, the aerobic sludge that can make at an easy rate to settle down through mud return line is back in aerobic fluidized-bed bioreactor or aerobic aeration pond and uses, to improve the reaction efficiency of aerobic biochemical reaction in aerobic fluidized-bed bioreactor or aerobic aeration pond.
The utility model is mainly used in the aerobic sludge sedimentation of sewage aerobic process field.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.The drawings and specific embodiments do not limit the claimed scope of the utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model aerobic sludge sedimentation device.
The specific embodiment
Referring to Fig. 1, aerobic sludge sedimentation device of the present utility model is provided with decanting zone cylindrical shell 1, overflow area cylindrical shell 2.Overflow area cylindrical shell 2 is cylindrical drum.Decanting zone cylindrical shell 1 is comprised of the cylindrical drum 13 on top and the inverted conical face shape cylindrical shell 14 of bottom.The top of cylindrical drum 13 is provided with downflow weir 9, around the outer wall on cylindrical drum 13 tops, is provided with annular base plate 12; Annular base plate 12 is horizontally disposed with, and the bottom of overflow area cylindrical shell 2 is connected with the outward flange of annular base plate 12, and annular base plate 12 is provided with drainpipe 5.Between cylindrical drum 13, annular base plate 12 and overflow area cylindrical shell 2, form overflow area 15.
The top of overflow area cylindrical shell 2 is provided with calotte 3 (typically using several uniform bolts is connected and fixed), and calotte 3 is provided with blast pipe 4.In the cylindrical drum 13 of decanting zone cylindrical shell 1, be provided with inlet distribution device 7, the bottom of inverted conical face shape cylindrical shell 14 is provided with mud return line 8.Inlet distribution device 7 is comprised of upper circular cone plate 10 and lower circular cone plate 11.Upper circular cone plate 10 and lower circular cone plate 11 are horizontally disposed with, between form runner; The bottom of two circular cone plates, in same level, connects (figure slightly) by several uniform connecting plates between the edge of bottom.Water inlet pipe 6 is entered in cylindrical drum 13 by the sidewall of cylindrical drum 13, and the top of upper circular cone plate 10 is connected with the outlet of water inlet pipe 6.
Calotte 3 is preferably taper seat shape (as shown in Figure 1), and blast pipe 4 is located at its top; The circular cone apex angle α of taper seat shape calotte 3 is generally 120～150 degree.Downflow weir 9 is preferably zigzag (as shown in Figure 1), can also be other conventional shape.
Inlet distribution device 7 is preferably located at the middle part of cylindrical drum 13 height of decanting zone cylindrical shell 1.The circular cone drift angle of upper circular cone plate 10 and lower circular cone plate 11 is generally 125～145 degree, and in Fig. 1, the circular cone drift angle of upper circular cone plate 10 represents with γ.The end circular diameter of upper circular cone plate 10 (measuring from the outermost of upper circular cone plate 10 bottom edge) is generally 1/2～2/3 of cylindrical drum 13 diameters (internal diameter), and the end circular diameter of lower circular cone plate 11 (measuring from the outermost of lower circular cone plate 11 bottom edge) is generally 1/2～2/3 of upper circular cone plate 10 end circular diameter.
The total measurement (volume) of decanting zone cylindrical shell 1 is generally 3～5 times of sewage inflow per hour, and the mean residence time of sewage in decanting zone cylindrical shell 1 is generally 3～5 hours.The ratio of the height of the cylindrical drum 13 of decanting zone cylindrical shell 1 and diameter (internal diameter) (being ratio of height to diameter) is generally 4～10, by the settling ratio of aerobic sludge, is decided.Specifically, in order to meet the needs of aerobic sludge sedimentation and backflow, when settling ratio < 50%, ratio of height to diameter is 4～6; During 50%≤settling ratio≤75%, ratio of height to diameter is 6～8; During 75% < settling ratio < 100%, ratio of height to diameter is 8～10.The standing sedimentation time of measuring settling ratio is 1 hour, represents that the percentage of settling ratio is percentage by volume.The height of cylindrical drum 13, upwards measures to the minimum point of downflow weir 9.
Other some main structure parameters of the utility model aerobic sludge sedimentation device are generally as follows: the cylindrical drum 13 of decanting zone cylindrical shell 1 and inverted conical face shape cylindrical shell 14 angle β between bus in vertical plane are 125～145 degree.The height of overflow area cylindrical shell 2 is generally 400～500 millimeters.The width of overflow area 15 is generally 300～400 millimeters, is highly generally 200～250 millimeters (this height is measured from upper surface to the minimum point of downflow weir 9 of annular base plate 12).The diameter (internal diameter) of water inlet pipe 6, drainpipe 5, blast pipe 4 and mud return line 8 is 100～200 millimeters.
Decanting zone cylindrical shell 1 in the utility model aerobic sludge sedimentation device (comprising cylindrical drum 13 and inverted conical face shape cylindrical shell 14), overflow area cylindrical shell 2, annular base plate 12, inlet distribution device 7 (comprising circular cone plate 10 and lower circular cone plate 11) are generally coaxial settings.Except explanation, the connection between each parts generally all adopts welding.
The operating process of the utility model aerobic sludge sedimentation device is described below in conjunction with Fig. 1.The sewage that contains aerobic sludge from aerobic fluidized-bed bioreactor or aerobic aeration pond enters inlet distribution device 7 through water inlet pipe 6, flows, and flow into downwards in decanting zone cylindrical shell 1 in the runner between upper circular cone plate 10 and lower circular cone plate 11.The interior zone of decanting zone cylindrical shell 1 is aerobic sludge decanting zone, the downward sedimentation of aerobic sludge in sewage.The pernicious gas that sewage is carried secretly into and the gas that fermentation produces in aerobic sludge sedimentation device upwards flow, and finally from blast pipe 4, enter gas treatment equipment and focus on.Under the effect of inlet distribution device 7, the cross-sectional area of sewage current becomes large, Speed Reduction (generally can be reduced to 3～5 mm/second).The cross-sectional area that cross-sectional area becomes the sedimentation of ambassador's aerobic sludge becomes large, is conducive to the rapid subsidence of aerobic sludge; Water velocity reduces the chance that can reduce to form turbulent flow or turbulent flow, makes the more stably sedimentation of active aerobic sludge.The aerobic sludge of sedimentation downwards finally falls into the inverted conical face shape cylindrical shell 14 of decanting zone cylindrical shell 1 bottom, then is back to and in aerobic fluidized-bed bioreactor or aerobic aeration pond, is participated in aerobic biochemical and react by sludge reflux pump (figure slightly) through mud return line 8.The clear water on cylindrical drum 13 tops enters overflow area 15 through downflow weir 9 overflows, through drainpipe 5, enters other device.
Claims (5)
1. an aerobic sludge sedimentation device, it is characterized in that: it is provided with decanting zone cylindrical shell (1), overflow area cylindrical shell (2), decanting zone cylindrical shell (1) is comprised of the cylindrical drum (13) on top and the inverted conical face shape cylindrical shell (14) of bottom, the top of cylindrical drum (13) is provided with downflow weir (9), outer wall around cylindrical drum (13) top is provided with annular base plate (12), the bottom of overflow area cylindrical shell (2) is connected with the outward flange of annular base plate (12), annular base plate (12) is provided with drainpipe (5), the top of overflow area cylindrical shell (2) is provided with calotte (3), calotte (3) is provided with blast pipe (4), in the cylindrical drum (13) of decanting zone cylindrical shell (1), be provided with inlet distribution device (7), the bottom of inverted conical face shape cylindrical shell (14) is provided with mud return line (8), inlet distribution device (7) is comprised of upper circular cone plate (10) and lower circular cone plate (11), between upper circular cone plate (10) and lower circular cone plate (11), form runner, the bottom of two circular cone plates is in same level, the top of upper circular cone plate (10) is connected with the outlet of water inlet pipe (6).
2. aerobic sludge sedimentation device according to claim 1, is characterized in that: calotte (3) is taper seat shape.
3. aerobic sludge sedimentation device according to claim 1, is characterized in that: downflow weir (9) is zigzag.
4. according to the aerobic sludge sedimentation device described in claim 1 or 2 or 3, it is characterized in that: inlet distribution device (7) is located at the middle part of cylindrical drum (13) height of decanting zone cylindrical shell (1), the circular cone drift angle of upper circular cone plate (10) and lower circular cone plate (11) is 125～145 degree, the end circular diameter of upper circular cone plate (10) is 1/2～2/3 of cylindrical drum (13) diameter, and the end circular diameter of lower circular cone plate (11) is 1/2～2/3 of upper circular cone plate (10) end circular diameter.
5. according to the aerobic sludge sedimentation device described in claim 1 or 2 or 3, it is characterized in that: height and the diameter ratio of the cylindrical drum (13) of decanting zone cylindrical shell (1) are 4～10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420069963.2U CN203763916U (en) | 2014-02-11 | 2014-02-11 | Aerobic sludge settling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420069963.2U CN203763916U (en) | 2014-02-11 | 2014-02-11 | Aerobic sludge settling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203763916U true CN203763916U (en) | 2014-08-13 |
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ID=51281165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420069963.2U Expired - Lifetime CN203763916U (en) | 2014-02-11 | 2014-02-11 | Aerobic sludge settling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203763916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143745A (en) * | 2019-06-18 | 2019-08-20 | 聊城市鲁西化工工程设计有限责任公司 | A kind of recycling sludge harmless treatment device and technique and application |
-
2014
- 2014-02-11 CN CN201420069963.2U patent/CN203763916U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143745A (en) * | 2019-06-18 | 2019-08-20 | 聊城市鲁西化工工程设计有限责任公司 | A kind of recycling sludge harmless treatment device and technique and application |
| CN110143745B (en) * | 2019-06-18 | 2022-07-29 | 聊城市鲁西化工工程设计有限责任公司 | Sludge recycling harmless treatment device and process and application |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |