CN108046391A - A kind of grating type flocculation thickener and its building method - Google Patents
A kind of grating type flocculation thickener and its building method Download PDFInfo
- Publication number
- CN108046391A CN108046391A CN201711294353.7A CN201711294353A CN108046391A CN 108046391 A CN108046391 A CN 108046391A CN 201711294353 A CN201711294353 A CN 201711294353A CN 108046391 A CN108046391 A CN 108046391A
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- grid
- grizzly bar
- flocculation
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- mrow
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of grating type flocculation thickener and its building methods,Including subsider,The subsider is provided centrally with flocculation unit,External overflow water collecting groove at the top of the subsider,The flocculation unit includes cloth hyponome,Water distribution grid,Flocculate grid,The cloth hyponome,Water distribution grid and flocculation grid are connected from top to bottom,The present apparatus is strengthened small whirlpool using minor diameter grizzly bar and is generated,Be conducive to the collision flocculation of particle,Simultaneously,By continuously adjusting grizzly bar spacing,Gradually reduce the velocity gradient of current,It can effectively avoid the broken of floccule body,Flocculating setting is carried out using the present apparatus,Big floccule body can be quickly formed in a short time,And timely sedimentation separation,Effectively improve flocculating setting efficiency,The flocculating setting of traditional thickener progress black water is substituted using the present apparatus,Occupation area of equipment can be reduced,Investment reduction and operating cost.
Description
Technical field
The present invention relates to a kind of sedimentation device, in particular to a kind of grating type flocculation thickeners and its building method, fit
For water treatment field, the slurry water flocculation for being particularly suitable for coal preparation plant's tail coal settles.
Background technology
Flocculating setting is an important step in sewage disposal, and conventional flocculation plant can be divided into waterpower flocculation reaction
Device, mechanical flocculation reactor, waterpower flocculation reactor is energy saving and easy care, and application is wide, traditional waterpower flocculation reactor
Mainly there are iris type, folded plate type, grid type, grid type etc., these reactors usually have homogeneous velocity gradient, although can be with
By be classified connect change velocity gradient, but change not in time, and tandem flowing can increase flco crush wait uncontrollable factors, lead
Flocculating effect is caused to be deteriorated, in addition, the flocculation of usual water process is separated with sedimentation or air supporting stage, therefore water is in unicom pipeline
Or flowed in open channel, flocculation time can be increased, the broken of floccule body is caused to wait negative effect.
The content of the invention
In order to solve the above technical problems, technical solution provided by the invention is：A kind of grating type flocculation thickener and its
Building method, including subsider, the subsider is provided centrally with flocculation unit, and external overflow water is collected at the top of the subsider
Slot, the flocculation unit include cloth hyponome, water distribution grid, flocculation grid, the cloth hyponome, water distribution grid and flocculation grid
It connects from top to bottom.
Further, the flocculation grid uses section as circular or polygon grizzly bar composition, the diameter of the grizzly bar
Or its external diameter of a circle (d), no more than 10mm, the grizzly bar is arranged by row from top to bottom, wherein the centre-to-centre spacing of the 1st row's grizzly bar
(l1) it is set as d+5~10mm, it is queued from the 2nd, the centre-to-centre spacing (l of n-th row's grizzly barn) determined using following methods：
In formula, d be grizzly bar diameter or circumscribed circle diameter, l1For the centre-to-centre spacing of the 1st row's grizzly bar, ln-1For upper row grizzly bar
Centre-to-centre spacing, u1The mean flow rate in first row grizzly bar gap is flowed through for water, its control should be made in 0.5m/s-1m/s by adjusting flow
Between, unIt is determined using following formula：
T in formulai=li/ui, i=1~n-1.
Further, n-th row's grizzly bar is equal with the centre-to-centre spacing of (n-1)th row's grizzly bar with the centre-to-centre spacing of (n-1)th row's grizzly bar.
Further, often arrange grizzly bar to arrange as axial symmetry using grid center of flocculating, in odd row at flocculation grid center
Arrange grizzly bar, do not arrange grizzly bar at flocculation grid center in even rows, i.e., in flocculation grid central axis, n-th row's grizzly bar with
(n-1)th row's grizzly bar is arranged in equilateral triangle.
Further, the flocculation grids top is equipped with flange two, and the flocculation grid is externally provided with wall two.
Further, the grid that flocculates is total high no more than 2m.
Further, the water distribution grid is vertically arranged by several parallel screens and formed, the parallel screen spacing distance
For 10-20mm, the water distribution height of grid is no more than 200mm.
Further, the water distribution grid upper and lower ends are equipped with flange one, and wall one is additionally provided on the outside of the water distribution grid.
After more than structure, the invention has the advantages that：The present apparatus is strengthened small whirlpool using minor diameter grizzly bar and is generated, and has
Collision beneficial to particle is flocculated, meanwhile, by continuously adjusting grizzly bar spacing, gradually reduce the velocity gradient of current, it can be effective
The broken of floccule body is avoided, flocculating setting is carried out using the present apparatus, big floccule body can be quickly formed in a short time, and in time
Sedimentation separation effectively improves flocculating setting efficiency.
The flocculating setting of traditional thickener progress black water is substituted using the present apparatus, occupation area of equipment can be reduced, saved
Investment and operating cost.
Description of the drawings
Fig. 1 is the structure diagram of a kind of grating type flocculation thickener of the present invention and its building method.
Fig. 2 is the overlooking the structure diagram of a kind of grating type flocculation thickener of the present invention and its building method.
Fig. 3 is a kind of grating type flocculation thickener of the present invention and its building method water distribution cell structure schematic diagram.
Fig. 4 is the plan structure signal of a kind of grating type flocculation thickener of the present invention and its building method water distribution grid
Figure.
Fig. 5 is a kind of grating type flocculation thickener of the present invention and its building method flocculation cell structure schematic diagram.
Fig. 6 is the plan structure signal of a kind of grating type flocculation thickener of the present invention and its building method flocculation grid
Figure.
Fig. 7 is the method for arranging of grizzly bar in a kind of grating type flocculation thickener of the present invention and its building method flocculation grid
Schematic diagram.
As shown in the figure：1st, overflow water collecting groove, 2, cloth hyponome, 3, water distribution grid, 301, parallel screen, 302, flange
One, 303, wall one, 4, flocculation grid, 401, flange two, 402, wall two, 403, grizzly bar, 5, subsider.
Wherein lnFor the centre-to-centre spacing of n-th row's grizzly bar, wherein n=1,2,3 ... ....
Specific embodiment
With reference to attached drawing 1-7, a kind of grating type flocculation thickener and its building method, including subsider 5, the subsider
5 are provided centrally with flocculation unit, the 5 external overflow water collecting groove 1 in top of subsider, and the flocculation unit includes cloth hyponome
2nd, water distribution grid 3, flocculation grid 4, the cloth hyponome 2, water distribution grid 3 and flocculation grid 4 are connected from top to bottom.
As the present embodiment preferred embodiment, the flocculation grid 4 uses section as circular or polygon grid
Item 403 forms, and the diameter of the grizzly bar 403 or its external diameter of a circle (d) are no more than 10mm, and the grizzly bar 403 is from top to bottom
It arranges by row, wherein the centre-to-centre spacing (l of the 1st row's grizzly bar1) it is set as d+5~10mm, it is queued from the 2nd, the centre-to-centre spacing of n-th row's grizzly bar
(ln) determined using following methods：
In formula, d be grizzly bar diameter or circumscribed circle diameter, l1For the centre-to-centre spacing of the 1st row's grizzly bar, ln-1For upper row grizzly bar
Centre-to-centre spacing, u1The mean flow rate in first row grizzly bar gap is flowed through for water, its control should be made in 0.5m/s-1m/s by adjusting flow
Between, unIt is determined using following formula：
T in formulai=li/ui, i=1~n-1.
According to above-mentioned detailed description, the present embodiment takes d=5mm, l1=10mm, u0=0.625=m/s, using above-mentioned side
Following result can be calculated in method：
| n | ln(mm) | un(mm/s) | Total residence time t (s) | Grid total height h (mm) |
| 1 | 10 | 625 | 0.008 | 10 |
| 2 | 10.4 | 579 | 0.017 | 16 |
| 3 | 10.6 | 575 | 0.027 | 22 |
| 4 | 11 | 555 | 0.038 | 28 |
| …… | …… | …… | …… | …… |
| 44 | 94.9 | 306 | 3.586 | 1317 |
| 45 | 102.3 | 305 | 3.905 | 1422 |
| 46 | 110.3 | 304 | 4.252 | 1536 |
N-th row's grizzly bar is equal with the centre-to-centre spacing of (n-1)th row's grizzly bar with the centre-to-centre spacing of (n-1)th row's grizzly bar.
In the present embodiment, according to above-mentioned result of calculation, centre-to-centre spacing takes the 1st row's grizzly bar between the row of the 1st row and the 2nd row's grizzly bar
Centre-to-centre spacing 10mm, centre-to-centre spacing takes l between the 2nd, 3 row's grizzly bars are arranged2For 10.4, and so on；Grizzly bar is often arranged using grid center as axis pair
Claim arrangement, odd row arranges grizzly bar at grid center, and even rows do not arrange grizzly bar at grid center, i.e., in grid central shaft
Locate, n-th row's grizzly bar and (n-1)th row's grizzly bar are arranged in equilateral triangle, as shown in Figure 7；
The grid 4 that flocculates is total high no more than 2m, according to the present embodiment with reference to result of calculation, 1.5m is can use, at this point, raw water is flocculated
Residence time about 4s.
As the present embodiment preferred embodiment, 4 top of flocculation grid is equipped with flange 2 401, the flocculation
Grid 4 is externally provided with wall 2 402.
As the present embodiment preferred embodiment, the water distribution grid 3 is vertically arranged structure by several parallel screens 301
Into parallel 301 spacing distance of screen is 10-20mm, and 3 height of water distribution grid is no more than 200mm, and the purpose is to make pipe
The raw water that road comes can be even into flocculation grid, but cannot stop the long time so that influencing flocculating effect.
As the present embodiment preferred embodiment, 3 upper and lower ends of water distribution grid are equipped with flange 1, described
3 outside of water distribution grid is additionally provided with wall 1.
The present invention and embodiments thereof are described above, this description is no restricted, attached shown in figure
Simply one of embodiments of the present invention, actual structure are not limited thereto.All in all if the ordinary skill of this field
Personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution phase
As frame mode and embodiment, be within the scope of protection of the invention.
Claims (8)
1. a kind of grating type flocculation thickener and its building method, it is characterised in that：Including subsider, the sedimentation groove center
Flocculation unit, the external overflow water collecting groove in the subsider top are provided with, the flocculation unit includes cloth hyponome, water distribution lattice
Grid, flocculation grid, the cloth hyponome, water distribution grid and flocculation grid are connected from top to bottom.
2. a kind of grating type flocculation thickener according to claim 1 and its building method, it is characterised in that：The wadding
Solidifying grid uses section, and for circular or polygon grizzly bar composition, the diameter of the grizzly bar or its external diameter of a circle (d) are little
In 10mm, the grizzly bar is arranged by row from top to bottom, wherein the centre-to-centre spacing (l of the 1st row's grizzly bar1) it is set as d+5~10mm, from
2 queue, the centre-to-centre spacing (l of n-th row's grizzly barn) determined using following methods：
<mrow>
<msub>
<mi>l</mi>
<mi>n</mi>
</msub>
<mo>=</mo>
<mfrac>
<msub>
<mi>u</mi>
<mn>1</mn>
</msub>
<msub>
<mi>u</mi>
<mi>n</mi>
</msub>
</mfrac>
<mo>&CenterDot;</mo>
<mfrac>
<msub>
<mi>l</mi>
<mrow>
<mi>n</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msub>
<msub>
<mi>l</mi>
<mn>1</mn>
</msub>
</mfrac>
<mrow>
<mo>(</mo>
<msub>
<mi>l</mi>
<mn>1</mn>
</msub>
<mo>-</mo>
<mi>d</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mi>d</mi>
</mrow>
In formula, d be grizzly bar diameter or circumscribed circle diameter, l1For the centre-to-centre spacing of the 1st row's grizzly bar, ln-1For the center of upper row grizzly bar
Away from u1The mean flow rate in first row grizzly bar gap is flowed through for water, should by adjust flow make its control 0.5m/s-1m/s it
Between, unIt is determined using following formula：
<mrow>
<msub>
<mi>u</mi>
<mi>n</mi>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<mn>12.5</mn>
<msub>
<mi>l</mi>
<mrow>
<mi>n</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msub>
</mrow>
<mrow>
<mn>0.1</mn>
<mo>+</mo>
<msubsup>
<mo>&Sigma;</mo>
<mrow>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mrow>
<mi>n</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
</msubsup>
<msub>
<mi>t</mi>
<mi>i</mi>
</msub>
</mrow>
</mfrac>
</mrow>
T in formulai=li/ui, i=1~n-1.
3. a kind of grating type flocculation thickener according to claim 2 and its building method, it is characterised in that：N-th row
Grizzly bar is equal with the centre-to-centre spacing of (n-1)th row's grizzly bar with the centre-to-centre spacing of (n-1)th row's grizzly bar.
4. a kind of grating type flocculation thickener according to claim 2 and its building method, it is characterised in that：Often arrange grid
Item is arranged using grid center of flocculating as axial symmetry, is arranged grizzly bar at flocculation grid center in odd row, is being flocculated in even rows
Grizzly bar is not arranged at grid center, i.e., in flocculation grid central axis, n-th row's grizzly bar and (n-1)th row's grizzly bar are in equilateral triangle cloth
It puts.
5. a kind of grating type flocculation thickener according to claim 2 and its building method, it is characterised in that：The wadding
Solidifying grids top is equipped with flange two, and the flocculation grid is externally provided with wall two.
6. a kind of grating type flocculation thickener according to claim 2 and its building method, it is characterised in that：Flocculate lattice
Grid are total high no more than 2m.
7. a kind of grating type flocculation thickener according to claim 1, it is characterised in that：The water distribution grid is by several
Parallel screen is vertically arranged composition, and the parallel screen spacing distance is 10-20mm, and the water distribution height of grid is no more than
200mm。
8. a kind of grating type flocculation thickener according to claim 7, it is characterised in that：Two above and below the water distribution grid
End is equipped with flange one, and wall one is additionally provided on the outside of the water distribution grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711294353.7A CN108046391B (en) | 2017-12-08 | 2017-12-08 | Grating type flocculation settling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711294353.7A CN108046391B (en) | 2017-12-08 | 2017-12-08 | Grating type flocculation settling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108046391A true CN108046391A (en) | 2018-05-18 |
| CN108046391B CN108046391B (en) | 2020-11-06 |
Family
ID=62122685
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711294353.7A Active CN108046391B (en) | 2017-12-08 | 2017-12-08 | Grating type flocculation settling device |
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| Country | Link |
|---|---|
| CN (1) | CN108046391B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2215486Y (en) * | 1994-11-03 | 1995-12-20 | 施振南 | Grid-bar water settling pool |
| CN201027175Y (en) * | 2007-04-30 | 2008-02-27 | 王丽 | Flocculation reaction device of adjustable grid tray |
| CN201543280U (en) * | 2009-09-29 | 2010-08-11 | 汉川市洁波净化有限公司 | ABS three-dimensional grid and flocculoreaction device applied by same |
| CN202089812U (en) * | 2011-04-18 | 2011-12-28 | 彭悦 | Mud feeding auxiliary coagulation device for settlement and clarification equipment |
| CN103127750A (en) * | 2011-11-25 | 2013-06-05 | 李亚平 | Diamond tube nest sediment structure and diamond tube nest assembly |
-
2017
- 2017-12-08 CN CN201711294353.7A patent/CN108046391B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2215486Y (en) * | 1994-11-03 | 1995-12-20 | 施振南 | Grid-bar water settling pool |
| CN201027175Y (en) * | 2007-04-30 | 2008-02-27 | 王丽 | Flocculation reaction device of adjustable grid tray |
| CN201543280U (en) * | 2009-09-29 | 2010-08-11 | 汉川市洁波净化有限公司 | ABS three-dimensional grid and flocculoreaction device applied by same |
| CN202089812U (en) * | 2011-04-18 | 2011-12-28 | 彭悦 | Mud feeding auxiliary coagulation device for settlement and clarification equipment |
| CN103127750A (en) * | 2011-11-25 | 2013-06-05 | 李亚平 | Diamond tube nest sediment structure and diamond tube nest assembly |
Non-Patent Citations (1)
| Title |
|---|
| 邹秋兰: "栅条絮凝池栅条间距对絮凝水力条件的影响研究", 《工程与建设》 * |
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| CN108046391B (en) | 2020-11-06 |
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