CN103626375A - Continuous concentration device for flocculated sludge - Google Patents
Continuous concentration device for flocculated sludge Download PDFInfo
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- CN103626375A CN103626375A CN201310655961.1A CN201310655961A CN103626375A CN 103626375 A CN103626375 A CN 103626375A CN 201310655961 A CN201310655961 A CN 201310655961A CN 103626375 A CN103626375 A CN 103626375A
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Abstract
The invention relates to a continuous concentration device for flocculated sludge. The flocculated sludge is injected into a separation cylinder from a feeding and overflow port; the separation cylinder is provided with an inclined rotating shaft and a filter screen is paved on the inner wall of the separation cylinder; constant and soft pressure is provided for free sludge to pass through the filter screen by utilizing liquid level difference; mud cakes on the surface of the filter screen are separated from the filter screen after rotating along the separation cylinder to the upper half circumference, so that self cleaning of the surface of the filter screen is realized and high permeability of the filter screen is maintained; and when the flocculated sludge flows into a discharge port at the lower end of the separation cylinder, the free sludge is reduced gradually and the solid component content is continuously increased, so continuous concentration of the flocculated sludge is realized, and treatment load and operation cost are reduced for the subsequent filter pressing and dehydration.
Description
Technical field
The present invention relates to a kind of flocculation mud continuous concentration device, belong to sludge dewatering technical field.
Background technology
The mud producing in sewage treatment process is generally processed in several modes such as Fertilizer Transformed, landfill or coloured glazes, and these are processed and all to require the moisture percentage in sewage sludge can not be too high.
Due to sewage, especially the mud solid substance lower (3%) producing in municipal wastewater treating processes, and in mud solid substance, mostly be the organic impurity of fine and closely woven inorganic impurity and wetting ability, dissolved colloidal state, while directly adopting filter-press dehydration, very easily cause the obstruction of separating interface (filter cloth), cause filter-pressing process frequently interrupted, production efficiency is low, and processing cost is high.Except dry with heating power, directly adopt press filtration precipitation to be difficult to make moisture percentage in sewage sludge to reach the further requirement that utilizes and process of later stage, and it is very big that mud is directly carried out to heating power energy consumption for drying, therefore, during sludge dewatering, generally need first carry out flocculation treatment, as often as possible to discharge in conjunction with water, improve the density of solid substance, think that filter-press dehydration alleviates technique burden and reduces processing cost.
Although the mud that sewage disposal obtains belongs to solidliquid mixture, integral body is relatively stable chaos state system, solid-liquid two-phase fuzzy.During sludge flocculation, crosslinked action can make cotton-shaped solid substance bunching become micelle release portion free state sewage simultaneously, makes solid-liquid two-phase clearly more demarcated.The micelle matter forming during flocculation is soft yielding, and in micelle agglomeration process, often can form hole and the cavity volume that contains water, gas, therefore that micelle global density differs greatly, rises and falls is indefinite.
The mud of whole chaos state can be formed on sewage free between micelle through flocculation, and this part sewage quantity is large, separated relatively easy, before the filter-press dehydration of being therefore everlasting, the mud after flocculation is concentrated, be the free sewage of pre-separation, to reduce the material quantity that enters press filtration operation.
At present, the concentrated normal method adopting of flocculation mud mainly comprises two kinds of sleeping spiral shell centrifugal settling and strainer gravity drainings.
Sleeping spiral shell centrifugal settling can settle down heavy phase component preferably by adjusting separating factor and barrel velocity contrast.Because it is by the restriction of density separation, can cause floating micelle and density are escaped lower than the light impurity of sewage, and because of the high related processing cost increase of acquisition cost.
Strainer gravity draining mainly relies on thickness and the gravity comprehensive action of the flocculation mud of paving cloth on it, makes free state sewage see through strainer and separates, and simple in structure, cost and process costs are low.But in gravity draining process, the mud cake forming on strainer face is relative with strainer static, and the decline of mud cake porosity and the obstruction of soft mud cake to strainer hole, can make sewage see through resistance increment, cause the separation efficiency of free state sewage to decline, mud cycles of concentration is lower.
For the limitation of above-mentioned two kinds of concentration method, a kind of embodiment of new flocculation mud continuous concentration device has been proposed.
Summary of the invention
Core of the present invention is:
1, utilize the constant liquid level of flocculation mud to bring up the detachment dynamic of stable, soft free state sewage;
2, utilize the rear micelle density of deflation to be greater than the feature of sewage and the conversion of the locus of filter screen, under the effect of gravity, make filter cake separated with filter screen, produce filter screen self-purging effect;
3, bring up the whole one-way movement of macroscopic view of flocculation mud, in Continuous Flow, in concentrating unit process, realize the concentrated gradually of the continuous separation of free state sewage and the mud that flocculates.
Flocculation mud continuous concentration device is comprised of separator cartridge (7), sewage collecting cover bucket (6), drive-motor (2), drive sprocket (3), chain (4), driven sprocket (12), lower bearing (8), head bearing (13).
Separator cartridge (7) is pyramidal structure, and barrel is permeable structure, inwall paving cloth filter screen (5); Separator cartridge (7) holds greatly centre that the open charging overflow port (1) of round shape is set, and charging overflow port (1) connects firmly with a driven sprocket (12); Separator cartridge (7) small end centre arranges round shape discharge port (9); Head bearing (13) and lower bearing (8) are enclosed within respectively outside charging overflow port (1) and discharge port (9), make separator cartridge (7) location; The conelet end of separator cartridge (7) and discharge port (9) joint are equipped with water retaining disk (10); Charging overflow port (1) joins with the flocculation sewage sludge feed pump discharge outside device, and the import of the thickened sludge dehvery pump outside discharge port (9) and device is joined.
Sewage collecting cover bucket (6) has surrounded pyramidal structure and the water retaining disk (10) of separator cartridge (7), and bottom has water outlet (11).
Taper separator cartridge (7) is in tilted layout, and high-end place is charging overflow port (1), and lower end is discharge port (9).
Drive sprocket (3) on drive-motor (2) drives the driven sprocket (12) connecting firmly with separator cartridge (7) by chain (4), can make separator cartridge (7) carry out constant slowly running, and rotating speed can make mud cake under action of gravity, from inwall filter screen (5), come off when turning through separator cartridge (7) upper half.
Flocculation mud continuous concentration device is characterised in that: the pyramidal structure of separator cartridge (7) for being in tilted layout, large end in high-end pyramidal structure is provided with charging overflow port (1), small end in the pyramidal structure of low side is provided with discharge port (9), barrel porous, cylinder inwall paving cloth filter screen (5).
Charging overflow port (1) is open architecture, flocculation mud can be injected in separator cartridge (7) by charging overflow port (1), when flocculation mud liquid level is during higher than charging overflow port (1), flocculation mud also can be discharged separator cartridge (7) by charging overflow port (1).
The conelet end of separator cartridge (7) and discharge port (9) joint are equipped with taper water retaining disk (10), the opening of taper water retaining disk (10), towards charging overflow port (1), can import the sewage flowing down along separator cartridge (7) wall of the outer-rotor in sewage collecting cover bucket (6).
The speed of rotation of separator cartridge (7) can make mud cake under action of gravity, from inwall filter screen (5), come off when turning through separator cartridge (7) upper half.
The working process of flocculation mud continuous concentration device is:
1, start drive-motor (2) and drive separator cartridge (7) rotation;
2, flocculation mud is injected in separator cartridge (7) by charging overflow port (1), and liquid level can overflow during higher than charging overflow port (1), to keep the interior liquid level constant of separator cartridge (7);
3, the free state sewage in flocculation mud enters in sewage collecting cover bucket (6) through the filter screen (5) of separator cartridge (7) inwall paving cloth, and filter screen (5) surface forms the mud cake of compacting;
4, when the mud cake on filter screen (5) surface rotates to upper half with the separator cartridge (7) rotating, under the effect of gravity, mud cake comes off from filter screen (5), and screen surface is realized from clear;
5, with flocculation mud, by charging overflow port (1), to discharge port (9), flowed, free state sewage is constantly discharged separator cartridge (7), and flocculation mud is concentrated gradually;
6, the flocculation mud after concentrated enters discharge port (9) and locates, and discharges separator cartridge, thereby realize the concentrated of flocculation mud under the negative pressure gravitation acting in conjunction of liquid-level pressure and thickened sludge dehvery pump.
The structure of flocculation mud continuous concentration device, kinematic parameter one regularly, are adjusted gradient and the thickened sludge conveying pump duty of rotating shaft and can be adjusted cycles of concentration and treatment capacity.Regularly, in tolerable limit, the raising of rotating speed is of value to the raising of thickening efficiency and the increase of processing power for the structure of flocculation mud continuous concentration device, location parameter one.
Summary of the invention beneficial effect
1, the low speed rolling by separator cartridge can make the mud cake forming in screen surface come off, and contributes to keep the high transmission ability of filter screen, and separation efficiency is improved;
2, utilize liquid level to produce press filtration power, pressure power is soft, and the porous nickel compression of the micelle that makes to flocculate, has avoided the formation of fine and close resistance filtering layer;
3, can realize flocculation mud continuous concentration and with organic connection of press filtration operation charging link;
4, simple in structure, the dependable performance of flocculation mud continuous concentration device.
Accompanying drawing explanation
Fig. 1 is flocculation mud continuous concentration device schematic diagram.
Embodiment
The following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
Flocculation mud continuous concentration device is comprised of separator cartridge (7), sewage collecting cover bucket (6), drive-motor (2), drive sprocket (3), chain (4), driven sprocket (12), lower bearing (8), head bearing (13).
Separator cartridge (7) is pyramidal structure, 36 ° of cone angles, and barrel is permeable structure, inwall paving cloth filter screen (5); Separator cartridge (7) holds greatly centre that round shape charging overflow port (1) is set, and charging overflow port (1) connects firmly with a driven sprocket (12); Separator cartridge (7) small end centre arranges round shape discharge port (9); Head bearing (13) and lower bearing (8) are enclosed within respectively outside charging overflow port (1) and discharge port (9), make separator cartridge (7) location; The conelet end of separator cartridge (7) and discharge port (9) joint are equipped with water retaining disk (10); Charging overflow port (1) joins with the flocculation sewage sludge feed pump discharge outside device, and the import of the thickened sludge feeding spiro rod pump outside discharge port (9) and device is joined.
Sewage collecting cover bucket (6) has surrounded pyramidal structure and the water retaining disk (10) of separator cartridge (7), and bottom has water outlet (11).
Taper separator cartridge (7) is in tilted layout, 22 °, rotating shaft inclination angle, and high-end place is charging overflow port (1), lower end is discharge port (9).
Drive sprocket (3) on drive-motor (2) drives the driven sprocket (12) connecting firmly with separator cartridge (7) by chain (4), can make separator cartridge (7) carry out constant slowly running, and rotating speed is 1-4r/min.
The working process of flocculation mud continuous concentration device is:
1, start drive-motor (2) and drive separator cartridge (7) rotation;
2, flocculation mud is injected in separator cartridge (7) by charging overflow port (1), and liquid level can overflow during higher than charging overflow port (1), to keep the interior liquid level constant of separator cartridge (7);
3, the free state sewage in flocculation mud enters in sewage collecting cover bucket (6) through the filter screen (5) of separator cartridge (7) inwall paving cloth, and filter screen (5) surface forms the mud cake of compacting;
4, when the mud cake on filter screen (5) surface rotates to upper half with the separator cartridge (7) rotating, under the effect of gravity, mud cake comes off from filter screen (5), and screen surface is realized from clear;
5, with flocculation mud, by charging overflow port (1), to discharge port (9), flowed, free state sewage is constantly discharged separator cartridge (7), and flocculation mud is concentrated gradually;
6, the flocculation mud after concentrated enters discharge port (9) and locates, and discharges separator cartridge, thereby realize the concentrated of flocculation mud under the negative pressure gravitation acting in conjunction of liquid-level pressure and thickened sludge dehvery pump.
Claims (3)
1. a flocculation mud continuous concentration device, is comprised of separator cartridge (7), sewage collecting cover bucket (6), drive-motor (2), drive sprocket (3), chain (4), driven sprocket (12), lower bearing (8), head bearing (13); The barrel of taper separator cartridge (7) is permeable structure, inwall paving cloth filter screen (5), the large central authorities of holding arrange round shape charging overflow port (1) and are fixedly connected with driven sprocket (12), small end central authorities arrange round shape discharge port (9), and small end and discharge port (9) joint is equipped with water retaining disk (10); Head bearing (13) and lower bearing (8) are enclosed within respectively outside charging overflow port (1) and discharge port (9), make separator cartridge (7) location; Separator cartridge (7) is in tilted layout, and high-end place is charging overflow port (1), and lower end is discharge port (9), by the drive sprocket (3) being contained on drive-motor (2), drives driven sprocket (12) to drive rotation; Sewage collecting cover bucket (6) has surrounded pyramidal structure and the water retaining disk (10) of separator cartridge (7), and bottom has water outlet (11); Flocculation mud is by charging overflow port (1) in discharge port (9) flow process, and free state sewage is constantly discharged separator cartridge (7), and flocculation mud is concentrated gradually; It is characterized in that separator cartridge (7), for the pyramidal structure that is in tilted layout, is provided with charging overflow port (1) at the large end of high-end pyramidal structure, at the pyramidal structure small end of low side, be provided with discharge port (9), barrel porous.
2. flocculation mud continuous concentration device according to claim 1 is characterized in that, charging overflow port (1) is open architecture.
3. flocculation mud continuous concentration device according to claim 1 is characterized in that, the conelet end of separator cartridge (7) and discharge port (9) joint are equipped with taper water retaining disk (10), and the opening of taper water retaining disk (10) is towards charging overflow port (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310655961.1A CN103626375A (en) | 2013-12-09 | 2013-12-09 | Continuous concentration device for flocculated sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310655961.1A CN103626375A (en) | 2013-12-09 | 2013-12-09 | Continuous concentration device for flocculated sludge |
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| CN103626375A true CN103626375A (en) | 2014-03-12 |
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| CN201310655961.1A Pending CN103626375A (en) | 2013-12-09 | 2013-12-09 | Continuous concentration device for flocculated sludge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017070882A1 (en) * | 2015-10-29 | 2017-05-04 | 安尼康（福建）环保设备有限公司 | Flocculation concentration device with grid structural body and filtrate recovery tank |
| CN107998740A (en) * | 2017-11-30 | 2018-05-08 | 盐城中凯环境科技有限公司 | A kind of solid-liquid separation dehydration device of low concentration solidliquid mixture |
| CN111170601A (en) * | 2020-02-20 | 2020-05-19 | 中电建建筑集团有限公司 | River sludge curing device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192939A (en) * | 1997-01-21 | 1998-09-16 | 孙复华 | Electric spiral-pressure dewatering machine |
| CN201485369U (en) * | 2009-06-11 | 2010-05-26 | 中国航空工业规划设计研究院 | Horizontal rotary kiln for sludge dewatering treatment |
| CN102583942A (en) * | 2012-02-23 | 2012-07-18 | 丹东东方机电工程有限公司 | Double-spiral sludge concentration dehydrator with two filter drums |
-
2013
- 2013-12-09 CN CN201310655961.1A patent/CN103626375A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192939A (en) * | 1997-01-21 | 1998-09-16 | 孙复华 | Electric spiral-pressure dewatering machine |
| CN201485369U (en) * | 2009-06-11 | 2010-05-26 | 中国航空工业规划设计研究院 | Horizontal rotary kiln for sludge dewatering treatment |
| CN102583942A (en) * | 2012-02-23 | 2012-07-18 | 丹东东方机电工程有限公司 | Double-spiral sludge concentration dehydrator with two filter drums |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017070882A1 (en) * | 2015-10-29 | 2017-05-04 | 安尼康（福建）环保设备有限公司 | Flocculation concentration device with grid structural body and filtrate recovery tank |
| CN107998740A (en) * | 2017-11-30 | 2018-05-08 | 盐城中凯环境科技有限公司 | A kind of solid-liquid separation dehydration device of low concentration solidliquid mixture |
| CN111170601A (en) * | 2020-02-20 | 2020-05-19 | 中电建建筑集团有限公司 | River sludge curing device and method |
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Application publication date: 20140312 |