CN208071403U - Vertical sedimentation basin with reflux in sludge - Google Patents
Vertical sedimentation basin with reflux in sludge Download PDFInfo
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- CN208071403U CN208071403U CN201820291157.8U CN201820291157U CN208071403U CN 208071403 U CN208071403 U CN 208071403U CN 201820291157 U CN201820291157 U CN 201820291157U CN 208071403 U CN208071403 U CN 208071403U
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- sludge
- sedimentation basin
- return duct
- compressed air
- reflecting plate
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Abstract
The utility model provides a kind of vertical sedimentation basin with reflux in sludge, return duct in central draft tube and sludge is provided in sedimentation basin, in the sludge in the centrally disposed guide shell of return duct, the top of return duct is less than water inlet bottom of the tube 20-120cm in the sludge；The lower end of central draft tube is provided with taper reflecting plate, and the top cone mouth of the taper reflecting plate is connect with the bottom end of return duct in sludge to be communicated；The lower part setting compressed air of the taper reflecting plate discharges pipe, and the other end of compressed air release pipe is connected with sedimentation basin external compression air-source.The application device can significantly mitigate Mud up-floating phenomenon, and in the case where dosage is equivalent, the device effluent quality using return duct in compressed air and sludge is more excellent；In the case where suspended matter removal effect is essentially identical, adding dose reduces by 40% or so.
Description
Technical field
The utility model is related to the technical fields of sewage disposal, particularly, be related to it is a kind of in sludge reflux it is perpendicular
Flow settling pond.
Background technology
Vertical sedimentation basin is because the advantages such as its floor space is small, deposition efficiency is high, management is simple, spoil disposal facilitates are middle-size and small-size
Sewage treatment plant is widely used.But for small-sized vertical sedimentation tank, if spoil disposal not in time, will produce on serious sludge
Emerge as causing sludge to be lost in from water outlet, influencing the water quality of water outlet.The reason of Mud up-floating, is typically due to organic in waste water
Object is more, when spoil disposal interval time is longer, microorganism breathe wherein or denitrification generate carbon dioxide, carbon dioxide and
Floc particle adsorbs, and causes Mud up-floating.
It is excellent that high density sedimentation with sludge reflux is low with its pharmaceutical use, outlet effect is good, sludge yield is low
Gesture is generally used, and principle is to be promoted coagulation using the sludge reflux after precipitation to water inlet using sludge, flocculated
Journey increases the density and size of the floc particle of formation, improves the speed of particle sedimentation, and outlet effect is more preferable.It is vertical-flow at present
Sedimentation basin generally uses pump to carry out sludge reflux to achieve the effect that similar high density precipitates, but energy consumption is higher, and turn of impeller
It is dynamic to destroy sludge flocculation structure, influence treatment effect.
Therefore, it is necessary to one kind capable of effectivelying prevent Mud up-floating, while can also reduce the processing scheme of dosing.
Utility model content
The utility model aim is to provide a kind of vertical sedimentation basin with reflux in sludge, vertical-flow to solve
The big technical problem of the Mud up-floating and dosing of sedimentation basin.
To achieve the above object, the utility model provides a kind of vertical sedimentation basin with reflux in sludge,
It is provided with return duct in central draft tube and sludge in sedimentation basin, in the sludge in the centrally disposed guide shell of return duct, institute
The top of return duct in sludge is stated less than water inlet bottom of the tube 20-120cm；It is anti-it to be provided with back taper below the central draft tube
Plate is penetrated, the top cone mouth of the taper reflecting plate is connect with the bottom end opening of return duct in sludge；Under the taper reflecting plate
Portion is arranged compressed air and discharges pipe, and compressed air release pipe is connected with sedimentation basin external compression air-source.
Preferably, the lower part setting compressed air release pipe of taper reflecting plate includes：The central axes face of taper reflecting plate
The opening that the opening of compressed air release pipe or the lower part of taper reflecting plate are discharged pipe by compressed air runs through.
Preferably, the central draft tube is vertically arranged round or regular polygon cylinder.
Preferably, the body centre axis of the central draft tube is overlapped with the central axis of sedimentation basin.
Preferably, the sedimentation basin body upper part is round or regular polygon cylinder, and lower part is cone bucket shape structure, cone bucket
Spoil disposal pipeline is arranged in shape structural base.
Preferably, deflector is set in the guide shell in the sludge above return duct.
The utility model has the advantages that：
The utility model in central draft tube by being arranged return duct in sludge so that the sludge in sludge buffering area can
It is mixed with water inlet with flowing back into water inlet, increases the density and size of floc particle, simultaneously as the sludge in buffering area
Constantly by stripping reflux, the micro-bubble on mud granule is desorbed with mud granule, to effectively slow down the floating of sludge
Problem.
Also, less than water inlet bottom of the tube 20-120cm (as at least 20- below liquid level at the top of return duct in the application sludge
120cm), then water inlet can contact on water inlet buffering area top with the sludge of reflux, and the bubble of return duct rises shape in sludge
At stirring action, so that returned sludge and water inlet is more fully contacted, can also increase spiral shape water conservancy diversion at the top of return duct in sludge
Plate is to promote the stirring action of bubble；On the one hand make to be uniformly mixed into water and returned sludge, on the other hand can make returned sludge
Degassing, is conducive to prevent Mud up-floating.Stripping tube is mainly used for spoil disposal, the application in vertical sedimentation basin in the prior art
The structure for improving vertical sedimentation basin has reached sludge reflux, sludge deaerates, the triple role of muddy water mixing, realizes existing perpendicular
The purpose that sedimentation tank cannot achieve.
Returned sludge will make, into the flco density bigger of water and more coarse, to be easy to settle, vertical sedimentation basin is because dirty
Mud flows back to form high density Sunk-fund effect, and sedimentation basin entirety solid-liquid separation effect is more preferable, and the pharmaceutical quantities used are lower.
Third, simple present solution provides one, low cost high density precipitates scheme：Conventional high density precipitation all needs
Mixing of the special pump part for returned sludge and water inlet is wanted, but the utility model passes through stripping reflux pipe and reflection
This part is omitted in the combination of plate, central tube, and structure is more simple, and operation is more easy, is suitable for small-scale sewage processing.
Fourth, this programme can mitigate Mud up-floating problem：This programme compressed air can be provided directly in sludge bucket, air lift
Reflux bottom of the tube is connected to reflecting plate.The absorption of gas and sludge is to pass through sludge reflux, sludge the reason of causing Mud up-floating
The sludge of storage area is in continuous shuttling movement, and in uphill process of the sludge in sludge in return duct, due to the stirring of gas
Effect, gas is desorbed with sludge, to mitigate the rising phenomenon of sludge.
And the compressed air of existing literature provides in sludge in return duct, can not form the perturbation action to sludge completely,
Caking sludge can not be smashed, be more likely formed Mud up-floating.
Therefore, the application device can significantly mitigate Mud up-floating phenomenon, empty using compression in the case where dosage is equivalent
The device effluent quality of return duct is more excellent in gas and sludge；In the case where suspended matter removal effect is essentially identical, dose is added
40% or so can be reduced.
Other than objects, features and advantages described above, the utility model also has other purposes, feature and excellent
Point.Below with reference to figure, the utility model is described in further detail.
Description of the drawings
The attached drawing constituted part of this application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.In attached drawing
In：
Fig. 1 is the structural schematic diagram of the preferred embodiment in the utility model；
Wherein, 1, sedimentation basin, 2, central draft tube, 3, return duct in sludge, 4, reflecting plate, 5, compressed air source, 6, pressure
Contracting air releasing tube is open, 7, outlet pipe, 8, water inlet pipe, 9, spiral deflector, 10, PAC chemical feeding points, 11, PAM chemical feeding points, 12,
Mud discharging mouth, 13, overflow launder, 14, inclined tube filler.
Specific implementation mode
The embodiments of the present invention are described in detail below in conjunction with attached drawing, but the utility model can be according to power
Profit requires to limit and the multitude of different ways of covering is implemented.
Referring to Fig. 1, this application discloses a kind of vertical sedimentation basins with sludge refluxing apparatus, are arranged in sedimentation basin 1
There are return duct 3 in central draft tube 2 and sludge, central draft tube that vertical sedimentation basin is divided into water buffering area, settling zone
With sludge memory block, central tube interior zone is water inlet buffering area, and settling zone is that reflecting plate or more precipitates pool area, sewage sludge storage
Area is sedimentation basin reflecting plate following region.
The central axes of return duct 3 are overlapped with the central axes of central draft tube 2 in the sludge, return duct 3 in the sludge
Top be less than 8 bottom 20-120cm of water inlet pipe；Water inlet can contact on water inlet buffering area top with the sludge of reflux in this way, and
The bubble of return duct rises to form stirring action in sludge, keeps the flco density bigger and build into water more coarse, is easy to heavy
Drop.Can also spiral deflector 9 be set in the guide shell in sludge above return duct, keep stirring more abundant.Spiral stream guidance
On the inner wall of 9 centrally disposed guide shell 2 of plate, it is located at the top of return duct 3 in sludge, return duct 3 in agitation sludge is assisted to push up
The sludge in portion.
The lower end of the central draft tube 3 can be set there are one horn mouth, and the reflecting plate 4 of taper, institute is arranged below in horn mouth
The cone mouth of taper reflecting plate is stated towards the bottom end opening of return duct in sludge 3 so that compressed air is more easy to enter reflux in sludge
Pipe；The lower part of the taper reflecting plate is communicated with compressed air release tube opening 6, and compressed air discharges the other end and precipitation of pipe
Pond external compression air-source 5 is connected, and the compressed air of external source then can discharge pipe by compressed air and enter return duct in sludge
It is internal.
The lower part of taper reflecting plate 4 is communicated with compressed air release tube opening 6 including at least two forms：Taper reflecting plate
The opening of lower part face compressed air release pipe or the lower part of taper reflecting plate discharged the opening of pipe by compressed air and pass through
It wears.Kind mode makes compressed air be directly entered return duct in sludge afterwards, and effect is more concentrated.
The central draft tube can be vertically arranged round or regular polygon cylinder, can select according to actual needs.Institute
The body centre axis for stating central draft tube is overlapped with the central axis of sedimentation basin, drives the sludge reflux in entire sedimentation basin.
Foam breaking nozzle is set at the top of central draft tube, foam breaking nozzle connects running water pipe, and tap water forms high speed water by nozzle
Pearl inhibits foam.
In addition, overflow launder 13 can be arranged at the top of sedimentation basin, overflow launder is connect with outlet pipe 7.It is set in vertical sedimentation basin
Inclined tube is set, inclined tube filler 14 is external a diameter of 80mm regular hexagons inclined tube filler.
Sedimentation basin body upper part is round or regular polygon cylinder, and lower part is cone bucket shape structure, cone bucket shape structural base
Be arranged mud discharging mouth 12 and spoil disposal pipeline and when exclude deposition sludge.
It is specific embodiment below.
Embodiment one,
The central draft tube of regular hexagon cylinder is set in sedimentation basin, is installed in sludge on the central axes of central draft tube
Return duct, the top of return duct is less than 8 bottom 50cm of water inlet pipe in sludge.Compressed air discharges one end and the sedimentation basin external pressure of pipe
Contracting air-source is connected, the lower part of one end face taper reflecting plate.
The pretreatment of betel nut waste water, PAC (Polyaluminium Chloride, polymerization are carried out using this vertical sedimentation tank
Aluminium chloride) addition 200mg/L, PAM (Polyacrylamide, polyacrylamide) addition 10mg/L.Part or all of PAM
It adds at the top of central draft tube 2, PAM chemical feeding points 11 are then located at the top of central draft tube 2, the top of spiral deflector 9.
PAC chemical feeding points 10 are located at the entry position of water inlet pipe 8.
In the case of using compressed air, going out aqueous suspension can control in 100mg/L hereinafter, sludge discharging period 4h, does not send out
Raw apparent Mud up-floating phenomenon.
Embodiment two,
The central draft tube of circular cylinder body is set in sedimentation basin, reflux in sludge is installed on the central axes of central draft tube
It manages, the top of return duct is less than 8 bottom 80cm of water inlet pipe in sludge.Compressed air discharges one end and the sedimentation basin external compression sky of pipe
Air source is connected, and the lower part of taper reflecting plate is run through in one end.
The pretreatment of betel nut waste water, PAC additions 200mg/L, PAM addition 10mg/ are carried out using this vertical sedimentation tank
L。
In the case of using compressed air, going out aqueous suspension can control in 90mg/L hereinafter, sludge discharging period 4h, still not
Apparent Mud up-floating phenomenon occurs.
Embodiment three,
The central draft tube of regular pentagon cylinder is set in sedimentation basin, is installed in sludge on the central axes of central draft tube
Return duct, the top of return duct is less than 8 bottom 20cm of water inlet pipe in sludge.Compressed air discharges one end and the sedimentation basin external pressure of pipe
Contracting air-source is connected, and the lower part of taper reflecting plate is run through in one end.
The pretreatment of betel nut waste water, PAC additions 200mg/L, PAM addition 10mg/ are carried out using this vertical sedimentation tank
L。
In the case of using compressed air, going out aqueous suspension can control in 110mg/L hereinafter, sludge discharging period 4h, still
Apparent Mud up-floating phenomenon does not occur.
Comparative example one,
The pretreatment of the betel nut waste water of progress and one isodose of embodiment in conventional precipitation pond, PAC addition 300mg/L,
PAM additions 15mg/L.
Slight Mud up-floating phenomenon has occurred for sludge discharging period 2h, and the content for going out aqueous suspension is 120mg/L.
Comparative example two,
The pretreatment of the betel nut waste water of progress and one isodose of embodiment in conventional precipitation pond, PAC addition 200mg/L,
PAM additions 10mg/L.
Sludge discharging period 2h has occurred apparent Mud up-floating phenomenon, has gone out aqueous suspension and reach as high as 300mg/L.
Comparative example three,
The central draft tube of regular hexagon cylinder is set in sedimentation basin, is installed in sludge on the central axes of central draft tube
Return duct, the top of return duct is less than 8 bottom 10cm of water inlet pipe in sludge.The pre- of betel nut waste water is carried out using this vertical sedimentation tank
Processing, PAC additions 200mg/L, PAM addition 10mg/L.
In the case of without using compressed air, go out aqueous suspension control in 280mg/L hereinafter, sludge discharging period 2h, occurs bright
Aobvious Mud up-floating phenomenon.
Comparative example four,
The central draft tube of regular hexagon cylinder is set in sedimentation basin, is installed in sludge on the central axes of central draft tube
Return duct, the top of return duct is less than 8 bottom 125cm of water inlet pipe in sludge.Betel nut waste water is carried out using this vertical sedimentation tank
Pretreatment, PAC additions 220mg/L, PAM addition 10mg/L.
In the case of without using compressed air, goes out aqueous suspension control and act on left and right, sludge discharging period 2h, hair in 230mg/L
Raw apparent Mud up-floating phenomenon.
Can be seen that the application device from above example and comparative example can significantly mitigate Mud up-floating phenomenon,
In the case that dosage is equivalent, the device effluent quality using return duct in compressed air and sludge is more excellent；It is removed in suspended matter
In the case that effect is essentially identical, 40% or so can be reduced by adding dose.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of vertical sedimentation basin with reflux in sludge, which is characterized in that be provided with center water conservancy diversion in sedimentation basin
Return duct in cylinder and sludge, in the sludge in the centrally disposed guide shell of return duct, the top of return duct is low in the sludge
In water inlet bottom of the tube 20-120cm；Back taper reflecting plate is provided with below the central draft tube, the taper reflecting plate
Top cone mouth connect with the bottom end opening of return duct in sludge and communicates；The lower part setting compressed air of the taper reflecting plate discharges
Pipe, compressed air release pipe are connected with sedimentation basin external compression air-source.
2. vertical sedimentation basin according to claim 1, which is characterized in that compressed air is arranged in the lower part of taper reflecting plate
Discharging pipe includes：The opening of the central axes face compressed air release pipe of taper reflecting plate or the lower part quilt of taper reflecting plate
The opening of compressed air release pipe runs through.
3. vertical sedimentation basin according to claim 1, which is characterized in that part or all of PAM is added in center water conservancy diversion
The top of cylinder.
4. vertical sedimentation basin according to claim 1, which is characterized in that in the setting defoaming spray of the top of central draft tube
Mouth.
5. vertical sedimentation basin according to claim 1, which is characterized in that inclined tube is arranged in vertical sedimentation basin.
6. vertical sedimentation basin according to claim 1, which is characterized in that the central draft tube is vertically arranged circle
Shape or regular polygon cylinder.
7. vertical sedimentation basin according to claim 1, which is characterized in that the body centre axis of the central draft tube
It is overlapped with the central axis of sedimentation basin.
8. vertical sedimentation basin according to claim 1, which is characterized in that the sedimentation basin body upper part be it is round or
Regular polygon cylinder, lower part are cone bucket shape structure, and spoil disposal pipeline is arranged in cone bucket shape structural base.
9. vertical sedimentation basin according to claim 1, which is characterized in that the water conservancy diversion in the sludge above return duct
Deflector is set in cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820291157.8U CN208071403U (en) | 2018-03-01 | 2018-03-01 | Vertical sedimentation basin with reflux in sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820291157.8U CN208071403U (en) | 2018-03-01 | 2018-03-01 | Vertical sedimentation basin with reflux in sludge |
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| CN208071403U true CN208071403U (en) | 2018-11-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108178271A (en) * | 2018-03-01 | 2018-06-19 | 湖南亿纳环保科技有限公司 | Vertical sedimentation basin with reflux in sludge |
| CN111302599A (en) * | 2020-04-14 | 2020-06-19 | 苏州依斯倍环保装备科技有限公司 | Sludge concentration system and method |
-
2018
- 2018-03-01 CN CN201820291157.8U patent/CN208071403U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108178271A (en) * | 2018-03-01 | 2018-06-19 | 湖南亿纳环保科技有限公司 | Vertical sedimentation basin with reflux in sludge |
| CN111302599A (en) * | 2020-04-14 | 2020-06-19 | 苏州依斯倍环保装备科技有限公司 | Sludge concentration system and method |
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