CN104370323B - A kind of shallow air-floatation device and the method for sewage disposal - Google Patents
A kind of shallow air-floatation device and the method for sewage disposal Download PDFInfo
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- CN104370323B CN104370323B CN201410671082.2A CN201410671082A CN104370323B CN 104370323 B CN104370323 B CN 104370323B CN 201410671082 A CN201410671082 A CN 201410671082A CN 104370323 B CN104370323 B CN 104370323B
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- water
- sewage
- dissolving
- flotation tank
- air
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
Abstract
The present invention relates to paper making equipment technical field, particularly relate to a kind of shallow air-floatation device and the method for sewage disposal, the structure of shallow air-floatation device includes sewage pump, flotation tank, inlet channel, high-pressure pump and air dissolving system, sewage pump is connected with the bottom of flotation tank by inlet channel, water-locator it is provided with in flotation tank, scoop slag device, sludge hopper and Rinsing Area, flotation tank be laterally disposed with haptoreaction district and Disengagement zone, Disengagement zone is connected with Rinsing Area by collector pipe, the slag notch scooping slag device is arranged at the surface of sludge hopper, the bottom of sludge hopper connects with slag chute.Compared with prior art, the dissolved oxygen rate of the present invention is the twice of complete molten formula airfloat equipment, and energy consumption is the lowest one times, and process after paper waste meet SS < 30mg/L.
Description
Technical field
The present invention relates to paper making equipment technical field, particularly relate to a kind of shallow air-floatation device and the method for sewage disposal.
Background technology
Shallow air-floatation technology uses air-dissolving air-float principle, part dissolved air water it is passed through in pending water, utilize the micro-bubble discharged in dissolved air water, float in water or oil are emerged, thus reaching the purpose of solid-liquid separation, shallow air-floatation is widely used in water supply purification, sanitary sewage, Industrial Wastewater Treatment.
Gas is blended in by force in water along with water under high pressure by traditional slightly soluble type airfloat equipment by micropore, the oxygen dissolved is 10% ~ 20%, and can only reflux 20% ~ 22% air supporting water outlet (clear water of no suspended substance), once effluent quality has fluctuation, the water very container of backflow is blocking microporous, causes maintenance load and processing pressure.
As improvement, prior art uses complete molten type airfloat equipment, it is by special low pressure air dissolved pump impeller by former water 100%, under the centrifugal force and cutting force of air dissolved pump impeller, oxygen is brought into and is together cut in former water, along with the power of pump, the former water good with oxygen mix is distributed in flotation tank, and float floats together along with the buoyancy of micro-bubble.But, due to all former water air dissolved pumps to be passed through, the water yield is big, therefore this complete molten type airfloat equipment energy consumption is higher, and uses the dissolved oxygen rate of low pressure solution gas also to only have 55% ~ 65%.
Summary of the invention
An object of the present invention is to avoid weak point of the prior art and provides that a kind of dissolved oxygen rate is high, energy consumption is low, the shallow air-floatation device of good sewage processing effect.
The two of the purpose of the present invention are to avoid weak point of the prior art and provide that a kind of dissolved oxygen rate is high, energy consumption is low, the method for the sewage disposal of good sewage processing effect.
The purpose of the present invention is achieved through the following technical solutions:
A kind of shallow air-floatation device is provided, including sewage pump, flotation tank, inlet channel, high-pressure pump and air dissolving system, described sewage pump is connected with the bottom of described flotation tank by inlet channel, it is provided with water-locator in described flotation tank, scoops slag device, sludge hopper and Rinsing Area, described flotation tank be laterally disposed with haptoreaction district and Disengagement zone, described Disengagement zone is connected with described Rinsing Area by collector pipe, the described slag notch scooping slag device is arranged at the surface of described sludge hopper, and the bottom of described sludge hopper connects with slag chute；
Described air dissolving system includes reflux water pipe, dissolving, high-pressure pump, dissolving water inlet pipe and dissolving outlet pipe, the water inlet of described backflow water pipe connects with described inlet channel, the outlet of described backflow water pipe is connected with described dissolving water inlet pipe by described high-pressure pump, and the outlet of described dissolving outlet pipe connects with the outlet of described inlet channel and connects with the bottom of described flotation tank.
Wherein, the outfan of described dissolving water inlet pipe is provided with jet spray device.
Wherein, the bottom in described haptoreaction district is provided with dissolved air release.
Wherein, described dissolving is provided with vapor liquid equilibrium device.
Wherein, the pipeline of described backflow water pipe, described dissolving water inlet pipe and described dissolving outlet pipe is provided with gate valve.
Wherein, described inlet channel is provided with effusion meter.
The present invention also provides for a kind of method using above-mentioned shallow air-floatation device to carry out sewage disposal, comprises the following steps:
1) sump collects sewage regulating water quality, makes water quality keep stable before entering flotation tank；
2) sewage is promoted to flotation tank by sewage pump through inlet channel, and the entrance at sewage pump adds aluminium polychlorid, and the impeller through described sewage pump is thoroughly mixed, and carries out mixed flocculation during being delivered to described inlet channel；
3) high-pressure pump shunts sewage partly from described inlet channel and enters dissolving generation dissolved air water through backflow water pipe, and described dissolved air water is delivered to the bottom of flotation tank through dissolving outlet pipe；
4) adding polyacrylamide near the position of the outlet of described inlet channel in the bottom of flotation tank, described dissolved air water is sufficiently mixed with the sewage carried by described inlet channel, again flocculates；
5) sewage flocculated through described step 4) now mixes again with described dissolved air water, and the sewage mixed is distributed to the haptoreaction district of flotation tank via water-locator, and moves in a circle and reach the zero velocity of water distribution；
6) described dissolved air water discharges a lot of nano level micro-bubble in haptoreaction district, and the flco in sewage is attached on micro-bubble and gradually floats along with micro-bubble enter Disengagement zone, forms scum silica frost and lower clear liquid after Disengagement zone is separated from water；
7) scum silica frost floated scoops up flow automatically to sludge hopper through scooping slag device, is then emitted into slag chute and is further processed；
8) the described lower clear liquid in step 6) is entered in Rinsing Area by collector pipe, outlet pipe discharge or recycling.
Wherein, the operating pressure of described high-pressure pump is set to 0.3 ~ 0.5Mpa.
Wherein, in described step 6), a diameter of 10 ~ 30 μm of described micro-bubble.
Beneficial effects of the present invention:
When a kind of shallow air-floatation device of the present invention carries out sewage disposal, sewage is entered the haptoreaction district of flotation tank by inlet channel, the most a part of sewage is shunted by inlet channel and passes through high-pressure pump entrance dissolving and forms dissolved air water, dissolved air water is sufficiently mixed with the sewage in inlet channel and flocculates, the sewage the flocculated nano level micro-bubble in haptoreaction district with dissolved air water and release thereof mixes again, flco in sewage is attached to micro-bubble and is gradually increasing in haptoreaction district, then Disengagement zone is entered by overflow, scum silica frost and lower clear liquid is formed after Disengagement zone is separated from water, thus reach the purpose of quick solid-liquid separation, the scum silica frost floated scoops up through scooping slag device and flows automatically to sludge hopper, then slag chute it is emitted into, lower clear liquid is entered Rinsing Area by collector pipe, discharged by outlet pipe or recycling.The air dissolving system of the present invention uses energy-conservation high-pressure pump, energy consumption is low, and efficiency is high, and the former water of 50% enters dissolving through high-pressure pump, be sufficiently mixed by mjector and oxygen, pressurize, can dissolve 98 ~ 99% oxygen, form super-saturated dissolved air water, then by dissolved air release, discharge a large amount of diameter micro-bubble in 10 ~ 30 μm, combine with the flco in water, form stable gas enclosure flco, float up to the water surface together, complete the separation of wadding float.Compared with prior art, the dissolved oxygen rate of the present invention is the twice of complete molten formula airfloat equipment, and energy consumption is the lowest one times, and good sewage processing effect, the paper waste after process meet SS < 30mg/L.
Accompanying drawing explanation
The present invention will be further described to utilize accompanying drawing, but the content in accompanying drawing does not constitute any limitation of the invention.
Fig. 1 is the structural representation of a kind of shallow air-floatation device of the present invention.
Fig. 1 includes:
Sewage pump 1；
Flotation tank 2, scoop slag device 21, sludge hopper 22, haptoreaction district 23, Disengagement zone 24, Rinsing Area 25, collector pipe 26；
Inlet channel 3；
High-pressure pump 4；
Backflow water pipe 5；
Dissolving 6, dissolving water inlet pipe 61, dissolving outlet pipe 62；
Jet spray device 7；
Effusion meter 8.
Detailed description of the invention
With the following Examples and accompanying drawing the invention will be further described.
Embodiment
1
A kind of shallow air-floatation device of the present invention, as shown in Figure 1, including sewage pump 1, flotation tank 2, inlet channel 3, high-pressure pump 4 and air dissolving system, sewage pump 1 is connected with the bottom of flotation tank 2 by inlet channel 3, it is provided with water-locator in flotation tank 2, scoops slag device 21, sludge hopper 22 and Rinsing Area 25, flotation tank 2 be laterally disposed with haptoreaction district 23 and Disengagement zone 24, Disengagement zone 24 is connected with Rinsing Area 25 by collector pipe 26, the slag notch scooping slag device 21 is arranged at the surface of sludge hopper 22, and the bottom of sludge hopper 22 connects with slag chute；
Air dissolving system includes reflux water pipe 5, dissolving 6, high-pressure pump 4, dissolving water inlet pipe 61 and dissolving outlet pipe 62, the water inlet of backflow water pipe 5 connects with inlet channel 3, the outlet of backflow water pipe 5 is connected with the water inlet pipe of dissolving 6 by high-pressure pump 4, and the outlet of dissolving outlet pipe 62 connects with the outlet of inlet channel 3 and connects with the bottom of flotation tank 2.
Concrete, the outfan of dissolving water inlet pipe 61 is provided with jet spray device 7, by the high-speed motion of current in spout, dissolving water inlet pipe 61, substantial amounts of air is made to be inhaled within the shortest time and be become micro-bubble by high-speed cutting, dissolve in the most to greatest extent in water, form super-saturated dissolved air water.
Concrete, the bottom in haptoreaction district 23 is provided with dissolved air release, the over-saturation dissolved air water that air dissolving system is formed enters haptoreaction district 23, a large amount of diameter micro-bubble in 10 ~ 30 μm is discharged through dissolved air release, combine with the flco in water, form stable gas enclosure flco, float up to the water surface together, complete the separation of wadding float.
Concrete, dissolving 6 is provided with vapor liquid equilibrium device.
Concrete, the pipeline of backflow water pipe 5, dissolving water inlet pipe 61 and dissolving outlet pipe 62 is provided with gate valve 64.
Concrete, inlet channel 3 is provided with effusion meter 8, can the flow of sewage in control piper.
The operation principle of the shallow air-floatation device of the present invention is as follows:
Sewage is entered the haptoreaction district 23 of flotation tank 2 by inlet channel 3, the most a part of sewage is shunted by inlet channel 3 and passes through high-pressure pump 4 and enters dissolving 6 and form dissolved air water, dissolved air water is sufficiently mixed with the sewage in inlet channel 3 and flocculates, the sewage the flocculated nano level micro-bubble in haptoreaction district 23 with dissolved air water and release thereof mixes again, flco in sewage is attached to micro-bubble and is gradually increasing in haptoreaction district 23, then Disengagement zone 24 is entered by overflow, scum silica frost and lower clear liquid is formed after Disengagement zone 24 is separated from water, thus reach the purpose of quick solid-liquid separation, the scum silica frost floated scoops up and flows automatically to sludge hopper 22 through scooping slag device 21, then slag chute it is emitted into, lower clear liquid is entered Rinsing Area 25 by collector pipe 26, discharged by outlet pipe or recycling.
The air dissolving system of the present invention uses energy-conservation high-pressure pump 4, energy consumption is low, and efficiency is high, and the former water of 50% enters dissolving 6 through high-pressure pump 4, be sufficiently mixed by mjector and oxygen, pressurize, can dissolve 98 ~ 99% oxygen, form super-saturated dissolved air water, then by dissolved air release, discharge a large amount of diameter micro-bubble in 10 ~ 30 μm, combine with the flco in water, form stable gas enclosure flco, float up to the water surface together, complete the separation of wadding float.Compared with prior art, the dissolved oxygen rate of the present invention is the twice of complete molten formula airfloat equipment, and energy consumption is the lowest one times, and good sewage processing effect, the paper waste after process meet SS < 30mg/L.
Embodiment
2
The method using the shallow air-floatation device of embodiment 1 to carry out sewage disposal, comprises the following steps:
1) sump collects sewage regulating water quality, makes water quality keep stable before entering flotation tank 2；
2) sewage is promoted to flotation tank 2 by sewage pump 1 through inlet channel 3, and the entrance at sewage pump 1 adds aluminium polychlorid, and the impeller through sewage pump 1 is thoroughly mixed, and carries out mixed flocculation during being delivered to inlet channel 3；
3) high-pressure pump 4 shunts the sewage of part from inlet channel 3 and enters dissolving 6 produce dissolved air water through backflow water pipe 5, and dissolved air water is delivered to the bottom of flotation tank 2 through dissolving outlet pipe 62；
4) adding polyacrylamide near the position of the outlet of inlet channel 3 in the bottom of flotation tank 2, dissolved air water is sufficiently mixed with the sewage carried by inlet channel 3, again flocculates；
5) sewage flocculated through step 4) now mixes again with dissolved air water, and the sewage mixed is distributed to the haptoreaction district 23 of flotation tank 2 via water-locator, and moves in a circle and reach the zero velocity of water distribution；
6) dissolved air water discharges a lot of nano level micro-bubble in haptoreaction district 23, flco in sewage is attached on micro-bubble and gradually floats along with micro-bubble enter Disengagement zone 24, scum silica frost is formed after Disengagement zone 24 is separated from water, with lower clear liquid, thus reach the purpose of quick solid-liquid separation；
7) scum silica frost floated scoops up flow automatically to sludge hopper 22 through scooping slag device 21, is then emitted into slag chute and is further processed；
8) the lower clear liquid in step 6) is entered in Rinsing Area 25 by collector pipe 26, outlet pipe discharge or recycling.
The operating pressure of high-pressure pump 4 is set to 0.3 ~ 0.5Mpa, uses energy-conservation high-pressure pump 4, has the advantage that energy consumption is low, efficiency is high.
In step 6), a diameter of 10 ~ 30 μm of micro-bubble.
Finally should be noted that; above example is merely to illustrate technical scheme rather than limiting the scope of the invention; although the present invention being explained in detail with reference to preferred embodiment; it will be understood by those within the art that; technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.
Claims (7)
1. a shallow air-floatation device, it is characterized in that: include sewage pump, flotation tank, inlet channel, high-pressure pump and air dissolving system, described sewage pump is connected with the bottom of described flotation tank by inlet channel, it is provided with water-locator in described flotation tank, scoops slag device, sludge hopper and Rinsing Area, described flotation tank be laterally disposed with haptoreaction district and Disengagement zone, described Disengagement zone is connected with described Rinsing Area by collector pipe, the described slag notch scooping slag device is arranged at the surface of described sludge hopper, and the bottom of described sludge hopper connects with slag chute；
Described air dissolving system includes reflux water pipe, dissolving, high-pressure pump, dissolving water inlet pipe and dissolving outlet pipe, the water inlet of described backflow water pipe connects with described inlet channel, the outlet of described backflow water pipe is connected with described dissolving water inlet pipe by described high-pressure pump, and the outlet of described dissolving outlet pipe connects with the outlet of described inlet channel and connects with the bottom of described flotation tank；
The outfan of described dissolving water inlet pipe is provided with jet spray device；
The bottom in described haptoreaction district is provided with dissolved air release；The over-saturation dissolved air water that air dissolving system is formed enters haptoreaction district, discharge a large amount of diameter micro-bubble in 10 ~ 30 μm through dissolved air release, combine with the flco in water, form stable gas enclosure flco, float up to the water surface together, complete the separation of wadding float.
A kind of shallow air-floatation device the most according to claim 1, it is characterised in that: described dissolving is provided with vapor liquid equilibrium device.
A kind of shallow air-floatation device the most according to claim 1, it is characterised in that: it is provided with gate valve on the pipeline of described backflow water pipe, described dissolving water inlet pipe and described dissolving outlet pipe.
A kind of shallow air-floatation device the most according to claim 1, it is characterised in that: described inlet channel is provided with effusion meter.
5. use the method that the shallow air-floatation device described in Claims 1-4 any one carries out sewage disposal, it is characterised in that: comprise the following steps:
1) sump collects sewage regulating water quality, makes water quality keep stable before entering flotation tank；
2) sewage is promoted to flotation tank by sewage pump through inlet channel, and the entrance at sewage pump adds aluminium polychlorid, and the impeller through described sewage pump is thoroughly mixed, and carries out mixed flocculation during being delivered to described inlet channel；
3) high-pressure pump shunts sewage partly from described inlet channel and enters dissolving generation dissolved air water through backflow water pipe, and described dissolved air water is delivered to the bottom of flotation tank through dissolving outlet pipe；
4) adding polyacrylamide near the position of the outlet of described inlet channel in the bottom of flotation tank, described dissolved air water is sufficiently mixed with the sewage carried by described inlet channel, again flocculates；
5) sewage flocculated through described step 4) now mixes again with described dissolved air water, and the sewage mixed is distributed to the haptoreaction district of flotation tank via water-locator, and moves in a circle and reach the zero velocity of water distribution；
6) described dissolved air water discharges a lot of nano level micro-bubble in haptoreaction district, and the flco in sewage is attached on micro-bubble and gradually floats along with micro-bubble enter Disengagement zone, forms scum silica frost and lower clear liquid after Disengagement zone is separated from water；
7) scum silica frost floated scoops up flow automatically to sludge hopper through scooping slag device, is then emitted into slag chute and is further processed；
8) the described lower clear liquid in step 6) is entered in Rinsing Area by collector pipe, outlet pipe discharge or recycling.
The method that shallow air-floatation device the most according to claim 5 carries out sewage disposal, it is characterised in that: the operating pressure of described high-pressure pump is set to 0.3 ~ 0.5Mpa.
The method that shallow air-floatation device the most according to claim 5 carries out sewage disposal, it is characterised in that: in described step 6), a diameter of 10 ~ 30 μm of described micro-bubble.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410671082.2A CN104370323B (en) | 2014-11-21 | 2014-11-21 | A kind of shallow air-floatation device and the method for sewage disposal |
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| CN201410671082.2A CN104370323B (en) | 2014-11-21 | 2014-11-21 | A kind of shallow air-floatation device and the method for sewage disposal |
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| CN104370323A CN104370323A (en) | 2015-02-25 |
| CN104370323B true CN104370323B (en) | 2017-01-04 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107867740A (en) * | 2016-09-26 | 2018-04-03 | 上海和惠生态环境科技有限公司 | A kind of oily waste water electric flocculation depth air-flotation system |
| CN107285527A (en) * | 2017-08-08 | 2017-10-24 | 邓州市华鑫纸业有限公司 | Paper industry paper machine white water recovery and processing system |
| CN107601728B (en) * | 2017-11-14 | 2023-12-26 | 河南清波环境工程有限公司 | Air-floatation flocculation sewage treatment system with automatic exhaust and anti-tumbling functions |
| CN109516519B (en) * | 2018-11-12 | 2024-02-27 | 江苏新纯江环保工程有限公司 | Multi-channel air-water mixing flotation machine |
| CN111115739B (en) * | 2020-01-14 | 2024-04-16 | 苏州中鹿环保设备有限公司 | Water inlet and water diversion gas-liquid mixing device of wastewater floatation system |
| CN111908546A (en) * | 2020-07-09 | 2020-11-10 | 中信环境技术（天津）有限公司 | Shallow air floatation device for sewage treatment and application thereof |
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| CN202201728U (en) * | 2011-09-07 | 2012-04-25 | 济宁同太环保科技服务中心 | Efficient air-floating sewage treatment device |
| CN102452695A (en) * | 2010-10-26 | 2012-05-16 | 王树岩 | Radial-flow micro-nano air flotation device |
| CN204342469U (en) * | 2014-11-21 | 2015-05-20 | 广东理文造纸有限公司 | A kind of shallow air-floatation device |
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| CN101066814A (en) * | 2007-06-08 | 2007-11-07 | 东华大学 | Water treating process and apparatus for cellulose fiber hydro-entangling process |
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Denomination of invention: Shallow air-floatation device and sewage treatment method Effective date of registration: 20180408 Granted publication date: 20170104 Pledgee: China Co truction Bank Corp Dongguan branch Pledgor: Guangdong Lee & Man Paper Factory Co., Ltd. Registration number: 2018440000080 |
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