CN108911003A - A kind of micro-nano bubble air-float degreasing device and technique - Google Patents

A kind of micro-nano bubble air-float degreasing device and technique Download PDF

Info

Publication number
CN108911003A
CN108911003A CN201810847431.XA CN201810847431A CN108911003A CN 108911003 A CN108911003 A CN 108911003A CN 201810847431 A CN201810847431 A CN 201810847431A CN 108911003 A CN108911003 A CN 108911003A
Authority
CN
China
Prior art keywords
water
oil
air
pond
aeration
Prior art date
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.)
Pending
Application number
CN201810847431.XA
Other languages
Chinese (zh)
Inventor
金强
Original Assignee
金强
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 金强 filed Critical 金强
Priority to CN201810847431.XA priority Critical patent/CN108911003A/en
Publication of CN108911003A publication Critical patent/CN108911003A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material

Abstract

A kind of micro-nano bubble air-float degreasing device of the invention and technique, by being successively separated out pretreatment pool, aeration tank, air-float filtration pond and clear water reserviors, make successively to carry out progressive processing in different disposal pond to oil removing water body, the primary treatments such as can be offerd medicine in pretreatment pool, be precipitated;It is aerated in aeration tank and forms air-flotation scum;The micro-nano bubble that aeration is formed is continued in air-float filtration pond and by mud scraper by oil removal, the clear water after oil removing flows into clear water reserviors and is discharged by water outlet, while can mitigate aeration tank with returning aeration pond and be aerated pressure, prevents from blocking.Entire pond body structure setting is reasonable, compact-sized, and whole device is not necessarily to reflow treatment, and treating capacity is big.

Description

A kind of micro-nano bubble air-float degreasing device and technique
Technical field
The present invention relates to a kind of micro-nano bubble air-float degreasing device and techniques, especially suitable for petrochemical industry waste liquid oil removing In field, belong to environmental technology field.
Background technique
In sewage treatment field, oil, water separation technology and equipment are one of key projects.For specific gravity close to the micro- of water The removal of little particle suspended oil or oil emulsion etc., micro-nano bubble air bearing is one of most efficient method.Macroscopical bubble is in 1 meter of water In, the residence time is therefore short with suspended matter time of contact less than 2 seconds, and it is low to occur sticking probability, crude removal low efficiency;Micro/nano level The residence time is very long in water for bubble, and specific surface area increases, and has negative electrical charge, increases with suspended matter time of contact, is demulsified, goes Dirty ability increases.In the prior art, have the technology using micro-nano bubble air-flotation process sewage, such as Chinese patent CN201720270770.7, which is related to a kind of efficient air floating sewage disposal device, applied to Cosmetic Manufacture factory Sewage treatment link.For another example Chinese patent CN201610350448.5, the patent are related to a kind of petrochemical industry cyanide wastewater processing Technique and device, mainly for the treatment of the cyanide in waste water.As can be seen that being removed in the prior art using micro-nano bubble air bearing The device of oil and the specific aim of technique are stronger, to processing containing different chemical substances (such as salt, phenols, sulfide, polycyclic fragrance Compounds of group, nitrogen, sulphur etc.) or the sewage of different material form (such as suspended state, emulsification state, solubilised state) need using different Device and technique, same set of degreasing unit and technique are not suitable for handling the dirt containing different chemical substances and different material form Water has preferable treatment effect just for certain a kind of chemical substance.That is existing micro-nano bubble oil removal by air bubbling dress It sets and the poor universality of technique.
Summary of the invention
For the poor universality for solving the problems, such as existing micro-nano bubble air-float degreasing device and technique, the present invention provides one kind Micro-nano bubble air-float degreasing device and technique.
Technical solution of the present invention:
A kind of micro-nano bubble air-float degreasing device, it is characterised in that including pretreatment pool, aeration tank, the gas successively separated Floating filtering ponds and clear water reserviors;
It is connected between the pretreatment tank and aeration tank by water pipe, between the aeration tank and air-float filtration pond, described It is weir plate between air-float filtration pond and clear water reserviors, there is return pipe between air-float filtration pond rear portion and aeration tank;
The aeration bottom of pond portion has micro-nano bubble aeration device;
There is mud-scraping apparatus above the air-float filtration pond.
The preferred return pipe is equipped with circulating pump.
Preferred the pretreatment tank is equipped with water inlet;The clear water reserviors are equipped with water outlet.
The preferred pipe inlet is on pretreatment pool top, and outlet is in aeration bottom of pond portion.
It is preferred to the inclined gear in air-float filtration pond at the top of weir plate between the preferred aeration tank and air-float filtration pond The mud-scraping apparatus include mud scraper, bucket, mud mouth and baffle;
The bucket is connect with the mud scraper end;The baffle connect and extends downwardly with the bucket, and direction The inclination of clear water reserviors direction.
Ozone generator is equipped in the preferred aeration tank.
A kind of oil removing process of aforementioned micro-nano bubble air-float degreasing device, it is characterised in that including:
(1) pretreatment pool will be introduced to oil removing water body, water body will be pre-processed;
(2) pretreated water body is introduced into aeration tank by water pipe, opens micro-nano bubble aeration device;
(3) water covers mud guard from aeration tank and enters air-float filtration pond;
(4) mud scraper is opened, the floating material for floating on water surface is struck off;
(5) the water body a part for striking off floating material through mud scraper crosses the inflow of the weir plate between air-float filtration pond and clear water reserviors Clear water reserviors, a part return to aeration tank by return pipe;
(6) water body in clear water reserviors is discharged through water outlet.
The preferred pretreatment includes precipitating and/or dispensing.
The bubble diameter of micro-nano bubble aeration device is arranged to physical state oily in oil removing water body for preferred basis;
It is suspended oil to oil removing, bubble diameter is set as 2.5-5 μm;
It is oil emulsion to oil removing, bubble diameter is set as 3~0.5 μm;
It is dissolved oil to oil removing, bubble diameter is set as 0.5~0.01 μm.
Technical effect of the invention:
A kind of nano bubble air-float degreasing device of the invention is by being successively separated out pretreatment pool, aeration tank, air-float filtration Pond and clear water reserviors make successively to carry out progressive processing in different disposal pond to oil removing water body, can be thrown in pretreatment pool The primary treatments such as medicine, precipitating;It is aerated in aeration tank and forms air-flotation scum;Aeration is continued in air-float filtration pond The micro-nano bubble of formation simultaneously passes through mud scraper for oil removal, and the clear water after oil removing flows into clear water reserviors and passes through water outlet and arranges Out, while aeration tank aeration pressure can be mitigated with returning aeration pond, prevents from blocking.Entire pond body structure setting is reasonable, and structure is tight It gathers, whole device is not necessarily to reflow treatment, and treating capacity is big.
Since the structure setting of pond body is reasonable, device of the present invention only needs to be arranged in aeration tank micro-nano bubble and exposes Device of air does not need the equipment such as setting Airfloat pump, air flotation turbo, blender, so low energy consumption;It will be micro-nano in aeration tank Bubble is introduced into air-float filtration pond, realizes the common air bearing in more ponds, and deoiling effect is good, and prevents dross from returning to aeration by mud guard Pond guarantees aeration and decontamination efficiency.
Since micro-nano bubble diameter of the invention is arranged between 0.01~3 μm, bubble diameter is small, and density is big, so Dross (floating material) is closely knit, and water content is low, strikes off conducive to mud scraper, and is conducive to the processing in later period;And anti-current-rush ability By force, the suddenly change of sewage quantity or oil content of wastewater influences deoiling effect minimum.
In oil removing process of the invention, exposed for different micro-nano bubbles is arranged to physical state oily in oil removing water body The bubble diameter of device of air, when removing suspended oil, bubble diameter is set as 3-5 μm;When except oil emulsion, bubble diameter is set as 3~0.5 μ m;When except dissolved oil, bubble diameter is set as 0.5~0.01 μm, and bubble diameter is targetedly arranged, and improves deoiling effect.
The structure design of pond body is plus the suction-operated of micro-nano bubble and for in oil removing water body through the invention The physical state of oil is arranged different bubble diameters, no matter the oil droplet of the oil group of greater particle size, greasy filth or subset, all It can be adsorbed and polymerize and rapidly rise to the water surface, then cooperate the hierarchical Design in each pond, staying water can be guided efficient Realization dross processing removing dross tank freshening can additionally lead to so that the waters being polluted by the oil be made to completely eliminate oily pollution Advanced oxidation can be carried out to water body by crossing ozone generator, restored purification of water quality and increased certain dissolved oxygen, obtain water quality Restore.
Detailed description of the invention
Fig. 1 is a kind of micro-nano bubble air-float degreasing device structural schematic diagram of the present invention.
Drawing reference numeral:
1- water inlet;2- water pipe;The micro-nano bubble aeration device of 3-;4- mud guiding plate;5- mud scraper;6- bucket;7- mud extraction Mouthful;8- mud guard;9- circulating pump;10- return pipe;11- weir plate;12- water outlet;13- pretreatment pool;The aeration tank 14-;15- gas Floating filtering ponds;16- clear water reserviors.
Specific embodiment
For the clearer content for understanding the invention, will be described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
As shown in Figure 1, a kind of micro-nano bubble air-float degreasing device of the present invention includes the pretreatment pool 13 successively separated, exposes Gas pond 14, air-float filtration pond 15 and clear water reserviors 16;
It is connected between the pretreatment tank 13 and aeration tank 14 by water pipe 2, the aeration tank 14 and air-float filtration pond 15 Between, be weir plate 11 between the air-float filtration pond 15 and clear water reserviors 16,15 rear portion of air-float filtration pond and aeration tank 14 it Between have return pipe 10, the return pipe 10 be equipped with circulating pump 9;The aeration bottom of pond portion has micro-nano bubble aeration device 3;There is mud-scraping apparatus above the air-float filtration pond 15.
The pretreatment tank 13 is equipped with water inlet 1;The clear water reserviors are equipped with water outlet 12.
For 2 entrance of water pipe on 13 top of pretreatment pool, on the one hand outlet guarantees that water can be pre- in 14 bottom of aeration tank The processes such as precipitating or the drug-treated of enough time are carried out in processing pond 13, on the other hand also guarantee to enter the water behind aeration tank 14 There can be enough aeration times.
For to the inclined mud guard 4 in air-float filtration pond at the top of weir plate between the aeration tank 14 and air-float filtration pond 15, It can prevent the dross into air-float filtration pond 15 from flowing back into aeration tank 14.
The mud-scraping apparatus includes mud scraper 5, bucket 6, mud mouth 7 and baffle 8;The bucket 6 and 5 end of mud scraper End connection receives the dross that mud scraper 5 is swept and is discharged from mud mouth 7;The baffle 8 be located at 5 downstream of cleaning shoe, such as with The bucket 6 is connected and is extended downwardly, and is tilted towards 16 direction of clear water reserviors, prevents the dregs of fat from entering clear water reserviors 16.
Ozone generator can also be further set in the aeration tank 14 and carry out advanced oxidation processing, further removed It is more difficult the dissolved oil etc. of removal.
Embodiment 2
The oil removing process of device is described according to embodiment 1.
Pretreatment pool 13 will be introduced by water inlet 1 to oil removing water body, it is pre- to carry out dispensing drug, water body sedimentation etc. to water body Processing;Pretreated water body is introduced into aeration tank 14 by water pipe 2, micro-nano bubble aeration device 3 is opened, adjusts bubble Diameter is aerated in aeration tank 14 and forms air-flotation scum;Water body carries dross and covers the entrance of mud guard 4 from aeration tank 14 Air-float filtration pond 15, the greasy dirt continued in the micro-nano bubble combination water that aeration is formed in air-float filtration pond 15 form gas It floats and passes through mud scraper 5 and remove the dregs of fat, when the water in air-float filtration pond 15 reaches certain altitude, the clear water after oil removing is flowed into Clear water reserviors 16 are simultaneously discharged by water outlet 12, while can open reflux pump 9, and by treated, water is back to aeration tank 14, are subtracted Light aeration tank 14 is aerated pressure, prevents greasy dirt excessive concentration from resulting in blockage.According to physical state setting oily in oil removing water body The bubble diameter of micro-nano bubble aeration device 3;It is suspended oil to oil removing, bubble diameter is set as 3 μm or so;It is emulsification to oil removing Oil, bubble diameter are set as 3~0.5 μm;It is dissolved oil to oil removing, bubble diameter is set as 0.5~0.01 μm.
Embodiment 3
According to embodiment 1 describe device to certain petrochemical industry saline sewage system carry out oil removal treatment, inflow 30t/h, The water source of low oil content 22.38-425 (ppm) and floorboard with high oil content 1064.5-4082.5 (ppm) are handled respectively, handled As a result it is as shown in the table:
Table 1:The sewage treatment result of oil content 22.38-425 (ppm)
Serial number It intakes oil content (ppm) It is discharged wadding body situation It is discharged oil content (ppm)
1 22.38 Substantially do not have 10.28
2 44.23 Substantially do not have 8.21
3 52.6 Substantially do not have 6.57
4 58.35 On a small quantity 9.55
5 72.79 Substantially do not have 12.58
6 76.78 Substantially do not have 10.11
7 142.4 Substantially do not have 18.76
8 388.8 Substantially do not have 13.43
9 425 Substantially do not have 19.60
Table 2:The sewage treatment result of oil content 1064.5-4082.5 (ppm)
Serial number It intakes oil content (ppm) It is discharged wadding body situation Water outlet oil contains (ppm)
1 1064.5 Substantially do not have 44.7
2 1175.2 Substantially do not have 32
3 1278.7 Substantially do not have 16.1
4 1562 On a small quantity 23.6
5 2017.5 On a small quantity 21.4
6 4082.5 On a small quantity 82.2
Table 3:When oil content 1175.2 (ppm), the present apparatus and other device deoiling effects are compared
1 Raw water oil content 1175.2 (ppm)
2 Level-one air-dissolving air-float 786.1 (ppm)
3 Second level holds gas air bearing 154.7 (ppm)
4 Micro-nano bubble air bearing 16.1 (ppm)
Embodiment 4
The device described according to embodiment 1 is in the progress sewage treatment in continuous three days of certain coke-oven plant.Handle coking air blowing condensation Water, water quality characteristics:Oil content is high, and emulsification is serious, complex in composition, each containing phenols, polycyclc aromatic compound and nitrogenous, sulphur etc. Kind foul gas is difficult to separate by simple gravitational settling, and it is as shown in the table for processing result:
Table 4:The removal effect of sulfide, COD, oil
Table 5:Aromatic hydrocarbons (benzene homologues) removal effect
The foregoing is merely the preferable specific embodiments of the present invention, but scope of protection of the present invention is not limited thereto, In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims Subject to enclosing.

Claims (10)

1. a kind of micro-nano bubble air-float degreasing device, it is characterised in that including successively separate pretreatment pool, aeration tank, air bearing Filtering ponds and clear water reserviors;
It is connected between the pretreatment tank and aeration tank by water pipe, between the aeration tank and air-float filtration pond, the air bearing It is weir plate between filtering ponds and clear water reserviors, there is return pipe between air-float filtration pond rear portion and aeration tank;
The aeration bottom of pond portion has micro-nano bubble aeration device;
There is mud-scraping apparatus above the air-float filtration pond.
2. the apparatus according to claim 1, it is characterised in that the return pipe is equipped with circulating pump.
3. the apparatus according to claim 1, it is characterised in that the pretreatment tank is equipped with water inlet;The clear water reserviors are equipped with Water outlet.
4. the apparatus according to claim 1, it is characterised in that the pipe inlet is being aerated in pretreatment pool top, outlet Bottom of pond portion.
5. the apparatus according to claim 1, it is characterised in that at the top of the weir plate between the aeration tank and air-float filtration pond For to the inclined mud guard in air-float filtration pond.
6. the apparatus according to claim 1, it is characterised in that the mud-scraping apparatus include mud scraper, bucket, mud mouth and Baffle;
The bucket is connect with the mud scraper end;The baffle connect and extends downwardly with the bucket, and towards clear water The inclination of pond direction.
7. the apparatus according to claim 1, it is characterised in that be equipped with ozone generator in the aeration tank.
8. a kind of oil removing process of micro-nano bubble air-float degreasing device as claimed in claim 1 to 7, it is characterised in that packet It includes:
(1) pretreatment pool will be introduced to oil removing water body, water body will be pre-processed;
(2) pretreated water body is introduced into aeration tank by water pipe, opens micro-nano bubble aeration device;
(3) water covers mud guard from aeration tank and enters air-float filtration pond;
(4) mud scraper is opened, the floating material for floating on water surface is struck off;
(5) the water body a part for striking off floating material through mud scraper crosses the weir plate between air-float filtration pond and clear water reserviors and flows into clear water Pond, a part return to aeration tank by return pipe;
(6) water body in clear water reserviors is discharged through water outlet.
9. oil removing process according to claim 8, it is characterised in that the pretreatment includes precipitating and/or dispensing.
10. oil removing process according to claim 8, it is characterised in that be arranged according to physical state oily in oil removing water body The bubble diameter of micro-nano bubble aeration device;
It is suspended oil to oil removing, bubble diameter is set as 2.5-5 μm;
It is oil emulsion to oil removing, bubble diameter is set as 3~0.5 μm;
It is dissolved oil to oil removing, bubble diameter is set as 0.5~0.01 μm.
CN201810847431.XA 2018-07-27 2018-07-27 A kind of micro-nano bubble air-float degreasing device and technique Pending CN108911003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810847431.XA CN108911003A (en) 2018-07-27 2018-07-27 A kind of micro-nano bubble air-float degreasing device and technique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810847431.XA CN108911003A (en) 2018-07-27 2018-07-27 A kind of micro-nano bubble air-float degreasing device and technique

Publications (1)

Publication Number Publication Date
CN108911003A true CN108911003A (en) 2018-11-30

Family

ID=64418935

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810847431.XA Pending CN108911003A (en) 2018-07-27 2018-07-27 A kind of micro-nano bubble air-float degreasing device and technique

Country Status (1)

Country Link
CN (1) CN108911003A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110240324A (en) * 2019-06-28 2019-09-17 西安建筑科技大学 Air-floating apparatus with oil-water separating function

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103043852A (en) * 2012-12-14 2013-04-17 蓝星环境工程有限公司 Wastewater treatment process and device
CN103408088A (en) * 2013-08-08 2013-11-27 江苏振宇环保科技有限公司 Micro-nano air floatation tank
CN203307167U (en) * 2013-06-08 2013-11-27 武汉钢铁(集团)公司 Oil-containing wastewater treatment device
CN104341021A (en) * 2013-07-30 2015-02-11 麦王环境技术股份有限公司 Progressive air floatation apparatus
CN104828893A (en) * 2015-04-21 2015-08-12 南通大恒环境工程有限公司 Flat flow pressurizing air-dissolving air flotation tank
CN206188431U (en) * 2016-11-15 2017-05-24 程玉水 Sediment subassembly and air supporting machine are arranged to air supporting machine
CN107285511A (en) * 2017-06-27 2017-10-24 中电环保股份有限公司 A kind of effective integrated waste-oil scavenger of oily waste water
CN206843244U (en) * 2017-06-06 2018-01-05 广州襄绿环保设备有限公司 A kind of efficient air-floating apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103043852A (en) * 2012-12-14 2013-04-17 蓝星环境工程有限公司 Wastewater treatment process and device
CN203307167U (en) * 2013-06-08 2013-11-27 武汉钢铁(集团)公司 Oil-containing wastewater treatment device
CN104341021A (en) * 2013-07-30 2015-02-11 麦王环境技术股份有限公司 Progressive air floatation apparatus
CN103408088A (en) * 2013-08-08 2013-11-27 江苏振宇环保科技有限公司 Micro-nano air floatation tank
CN104828893A (en) * 2015-04-21 2015-08-12 南通大恒环境工程有限公司 Flat flow pressurizing air-dissolving air flotation tank
CN206188431U (en) * 2016-11-15 2017-05-24 程玉水 Sediment subassembly and air supporting machine are arranged to air supporting machine
CN206843244U (en) * 2017-06-06 2018-01-05 广州襄绿环保设备有限公司 A kind of efficient air-floating apparatus
CN107285511A (en) * 2017-06-27 2017-10-24 中电环保股份有限公司 A kind of effective integrated waste-oil scavenger of oily waste water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110240324A (en) * 2019-06-28 2019-09-17 西安建筑科技大学 Air-floating apparatus with oil-water separating function

Similar Documents

Publication Publication Date Title
KR100848117B1 (en) Advanced water treatment equipment
US8632685B2 (en) Multistage DAF-advanced oxidation system
CN106007209B (en) A kind of oil refinery's sewage oil removing pretreating process
CN107082506B (en) Treatment method and process flow for oilfield produced water
CN110240324A (en) Air-floating apparatus with oil-water separating function
CN108911003A (en) A kind of micro-nano bubble air-float degreasing device and technique
CN105601041A (en) Advanced treatment device for oil refining wastewater
KR101297293B1 (en) Floatation plant with scum concentration fuction
KR100826971B1 (en) Natural water clean apparatus
KR100874477B1 (en) Sedimentation tank for water treatment
CN105129969B (en) Perimeter filter water outlet biochemical sedimentation basin
CN210710835U (en) Air floatation equipment for treating coking wastewater
KR20110060877A (en) The apparatus to treat municipal and industrial wastewater
CN101113031A (en) Method for treating oil field wastewater by electro-float process
KR101586628B1 (en) A sludge separation device for water and sewage and a sludge separation method for water and sewage using the same
JPH11309446A (en) Composite water purifying device
CN205933546U (en) Refinery wastewater treatment system
CN107879410A (en) Pressurizer mechanism for sewage pressure floatation air
KR20020068311A (en) Apparatus for clarifying water and wastewater
KR20110047453A (en) The method and apparatus to treat municipal and industrial wastewater
CN213141727U (en) Treatment system for electric desalting backwashing wastewater
JP2551466Y2 (en) Oil removal equipment
KR101877364B1 (en) Sedimentation tank of a triple structure
JPH0796114B2 (en) Vertical electrolytic levitation type wastewater treatment method and apparatus
CN214244124U (en) Oily wastewater treatment system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination