CN105859076A - Ozone microbubble air floating concentration device and sludge conditioning and concentration method - Google Patents
Ozone microbubble air floating concentration device and sludge conditioning and concentration method Download PDFInfo
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- CN105859076A CN105859076A CN201610422976.7A CN201610422976A CN105859076A CN 105859076 A CN105859076 A CN 105859076A CN 201610422976 A CN201610422976 A CN 201610422976A CN 105859076 A CN105859076 A CN 105859076A
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- eddy current
- ozone
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000010802 sludge Substances 0.000 title abstract description 33
- 230000003750 conditioning effect Effects 0.000 title abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 239000007789 gas Substances 0.000 claims abstract description 54
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 239000002893 slag Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 15
- 231100000719 pollutant Toxicity 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 68
- 230000008719 thickening Effects 0.000 claims description 46
- 239000003814 drug Substances 0.000 claims description 42
- 239000000377 silicon dioxide Substances 0.000 claims description 34
- 230000008569 process Effects 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 16
- 230000001174 ascending effect Effects 0.000 claims description 14
- 239000002351 wastewater Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000356 contaminant Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 239000007943 implant Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000000740 bleeding effect Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 210000003437 trachea Anatomy 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 abstract description 7
- 238000006297 dehydration reaction Methods 0.000 abstract description 7
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 229940037003 alum Drugs 0.000 abstract 2
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 229920002401 polyacrylamide Polymers 0.000 description 22
- 239000010865 sewage Substances 0.000 description 10
- 238000005188 flotation Methods 0.000 description 9
- 239000007787 solid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 239000010801 sewage sludge Substances 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000010842 industrial wastewater Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- -1 iron salt Chemical class 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000003295 industrial effluent Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000008247 solid mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 241001672694 Citrus reticulata Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses an ozone microbubble air floating concentration device and a sludge conditioning and concentration method. The device comprises a reaction trough, an ozone generator, a slag remover and a slag collecting trough. 4-6 sets of vortex three-phase mixers connected in series are arranged above the reaction trough side by side. Sludge is fed into the multi-stage vortex three-phase mixers through a pressurizing water inlet pump to form vortexes. Ozone is fed into the first-stage vortex three-phase mixer through a gas booster pump or an air compressor. A PAM agent is fed into the second-stage vortex three-phase mixer or the third-stage vortex three-phase mixer through an agent feeding pump. In the multi-stage vortex three-phase mixers, the agent is mixed with three phases of pollutant particles, water and gas, microbubbles are generated by the vortexes, and alum floc is formed. The alum floc floats to the liquid surface by carrying bubbles to form dross. Sludge conditioning is achieved through the multi-stage vortex three-phase mixers and the reinforcing and oxidizing function of the ozone, meanwhile the air floating dross with the water content of 90% to 95% can be obtained, and subsequent dehydration of a super-high pressure elastic presser or a plate frame dehydrator is promoted.
Description
Technical field
The invention belongs to technical field of sludge treatment, relate to a kind of ozone microbubble floatation thickening device and mud is adjusted
Matter method for concentration, it is adaptable to mud is quenched, concentration, and the scum silica frost after quenched concentration enters supertension elasticity pressure
Crusher carries out press dewatering.
Background technology
Mud is the product after sewage disposal, is a kind of by organic relic, microorganism, inorganic particle, colloid
Extremely complex heterogeneous body Deng composition.The key property of mud is that moisture content is high (may be up to more than 99%),
Content of organics is high, and easily corruption is smelly, and granule is relatively thin, and proportion is less, jelly liquid, and it is to be situated between
Concentrated thing between liquid and solid.In recent years, along with China's economy and the fast development of sewage disposal technology,
The sludge quantity produced the most quickly improves, and the specific resistance to filtration problem thus brought draws attention day by day.By
High in sludge of sewage treatment plant moisture content, generation amount is big, and volume is big, be easily generated stench, in Treatment of Sludge
Important link is just by sludge dewatering, is separated by the solid, liquid in mud, the dirt of current sewage treatment plant
Mud major part uses the dehydration of mechanical dehydration, especially supertension elasticity squeezer or sheet frame dewaterer.General work
Property mud (referring to the precipitate that activated sludge method processing technique second pond produces), its moisture content is up to about 99%.
When moisture percentage in sewage sludge is down to 95% by 99%, the volume of mud can narrow down to original 1/5.Mud is had
Imitate ground, process the most further, reduce it and store occupation of land, must first carry out sludge condensation.
In order to improve supertension elasticity squeezer or the efficiency of sheet frame dewaterer dehydration, also first mud is carried out dense
Contracting.Domestic gravity concentration (precipitation) mode that uses the earliest, the mud after this kind of condensing mode concentrates is aqueous
Rate is generally 95～97%, exist floor space compared with big, concentrated effect is poor, concentrate after moisture percentage in sewage sludge high,
Easily fermentation produces the defects such as foul smell, limits its development.The sludge condensation mode that sewage treatment plant is conventional at present is
Use mechanical thickening, such as screw press formula, belt thickener machine etc., although this kind of condensing mode floor space is little,
Surrounding environment influence is little, but its cost is high, and power consumption is high, and the mud extraction moisture content of especially this kind of condensing mode is high,
It is high that PAM adds rate, and equipment failure rate is high, there is also the problems such as washing water quantity is big, also limit its development.
In order to improve the dewatering of mud, it is dehydrated at sludge pump excess of imports high-pressure elastomeric squeezer or sheet frame dewaterer
Before, it is also performed to mud modifier treatment.The conventional conditioning mode that conditioning mode is iron salt+Calx, but this
Conditioning mode introduces heavy metal iron ion, calcium ion, and adds mud butt, is unfavorable for follow-up mud
Process and dispose.
Along with China's urban development needs, land resource is in short supply, and highly desirable a kind of floor space is little, processes effect
Fruit is notable, novel sludge concentration device that after process, moisture percentage in sewage sludge is low and the quenched method for concentration of mud.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of ozone microbubble floatation thickening device
And the quenched method for concentration of mud, to solve, mud hardening and tempering method of the prior art is unreasonable, sludge condensation dry
Spend the highest problem, it is achieved quenched+high mass dryness fraction of mud concentrates synchronization and carries out, and is beneficial to the supertension of follow-up mud
Elastic squeezing or the dehydration of sheet frame dewaterer.
Technical scheme is as follows:
A kind of ozone microbubble floatation thickening device, it includes a reactive tank, is arranged side by side above reactive tank
The eddy current three-phase blender that 4～6 groups (4～6 grades) connect, is the first order by water outlet side, is last by influent side
Level, (being i.e. arranged in order from water outlet side to influent side as the first order, the second level ... N level), every grade of eddy current
It is provided with A reactor in three-phase blender；Reactive tank is separated into three rooms by weir plate from influent side to water outlet side:
Contact chamber, separation chamber and clear water collecting chamber；Separation chamber is provided above slag remover, arranges below the slag remover other end
Dreg collecting slot；Water inlet manifold one end is connected with intake pump outlet, the other end and the side of first order eddy current three-phase blender
Face water inlet connects；The bottom outlet of first order eddy current three-phase blender and second level eddy current three-phase blender
Lateral inflow mouth connects；... by that analogy, the bottom outlet of previous stage eddy current three-phase blender and rear stage
The lateral inflow mouth of eddy current three-phase blender connects；The bottom outlet of afterbody eddy current three-phase blender is direct
Connect a release pipe；Release pipe outlet is positioned at reactive tank contact chamber bottom；Every primary vortex three-phase blender
Water inlet pipe at lateral inflow mouth is provided with bypass ascending pipe；The outlet of medicament preparation facilities and adding of agent pump intake
Connect；Drug-feeding tube one end is connected with adding of agent pump discharge, the drug-feeding tube other end respectively with the second level, the third level
Bypass ascending pipe at the lateral inflow mouth of eddy current three-phase blender connects；Ozone generator outlet and gas boosting
Pump or air compressor machine entrance connect；Air inlet pipe one end and gas boosting pump or air compressor machine export and are connected, the other end and the
The top air inlet of primary vortex three-phase blender connects；The gas outlet, top of third level eddy current three-phase blender is even
Connect an exhaustor；Exhaustor is provided with air bleeding valve.
Further, separation chamber is provided above slag remover, and the slag remover other end extends horizontally to above dreg collecting slot；
The top of dreg collecting slot is less than the bottom of eddy current three-phase blender；Dreg collecting slot bottom is a greater part of is to tilt, and tilts the end
It is positioned at above clear water collecting chamber.
Further, the water inlet pipe at the lateral inflow mouth of every primary vortex three-phase blender hangs down with bypass ascending pipe
Directly.
Further, water inlet manifold is provided with effusion meter；Every primary vortex three-phase blender top is equipped with pressure
Power table.Air inlet pipe is provided with intake valve, is additionally provided with check valve after intake valve.Check valve it also is provided with on drug-feeding tube.
Dreg collecting slot is provided with liquidometer.
A kind of quenched method for concentration of mud utilizing above-mentioned ozone microbubble floatation thickening device to carry out is as follows:
Mud (including domestic sewage sludge, industrial wastewater sludge, copper water-supply pipe) uses pressurization intake pump, logical
Cross water inlet pipe, be conveyed in multi-stage vortex three-phase blender formation eddy current, i.e. from first order eddy current three-phase blender
What serially enter successively below in eddy current three-phase blender；After ozone has been prepared by ozonator, pass through
Gas boosting pump or air compressor machine compression, after promoting the pressure of ozone gas, be conveyed into first order whirlpool by air inlet pipe
In stream three-phase blender；PAM medicament (polyacrylamide), after medicament preparation facilities prepares, uses pressurization
Adding of agent pump, by drug-feeding tube, adds on the second level and third level eddy current three-phase blender, from eddy current three
Bypass ascending pipe at the lateral inflow mouth of phase blender injects (being perpendicular to water (flow) direction inject or oblique injection)；
In multi-stage vortex three-phase blender in the contact chamber of reactive tank, pressurized ozone is directly dissolved in incoming waste water
In, and then PAM medicament directly adds to molten gas-liquid, medicament and contaminant particle (solid), water, gas
Three contact mixing, and eddy current produces microbubble and also implants in pollutant, and pollutant are captured, and forms flco；?
Separation chamber, entrained air bubbles in flco, float to be formed on liquid level scum silica frost, complete solid-liquid separation；Utilize slagging-off
Machine automatically removes scum silica frost, and scum silica frost enters dreg collecting slot and collects or process；Clear water is collected, by reacting at clear water collecting chamber
Trench bottom is discharged.
Moisture content is the mud (domestic sewage sludge, industrial wastewater sludge or copper water-supply pipe) of 98.5～99.5%,
After this ozone microbubble floatation thickening device carries out quenched, concentration, it is thus achieved that the scum silica frost of higher mass dryness fraction,
The moisture content of this air-flotation scum is 90～95%；Scum silica frost after this is quenched, can be the most defeated without adding any medicament
Delivering to supertension elasticity squeezer squeeze, the moisture content of the cake after squeezing can reach 55～65%.
Intake pump is arranged on water inlet manifold road, and intake pump pressure is 0.6～0.9Mpa；First order eddy current three-phase
The pressure of blender is the highest (0.6～0.9Mpa), after pressure in what eddy current three-phase blender the most one by one
Successively decrease.
After PAM medicament (polyacrylamide) prepares, use pressurized medicament to add pump, add in the second level or
On third level eddy current three-phase blender；The pressure that adds of PAM adding of agent pump is slightly larger than intake pump pressure (i.e.
Slightly larger than 0.6～0.9MPa).The dosage of PAM medicament is 0.002～0.006gPAM/gDS (dewatered sludge).
This floatation thickening device is provided with ozone and prepares throwing device ozonator.Ozone (O3) it is oxygen
Isotope, the oxidation-reduction potential in water is 2.07V, and oxidability is strong.By in residual active sludge
Adding ozone, be cell debris by part bacterial oxidation, after cell breakage, protein, nucleic acid etc. are released
Come, make mud reach quenched, strengthen the performance of follow-up sludge dewatering.Due to ozone extremely unstable, it is impossible to as it
Its gas loads use in bottle like that, can only be with producing with use.Therefore in this floatation thickening device and technique,
It is provided with ozonator, after prepared by ozone, is compressed by gas boosting pump or air compressor machine, promote ozone
After the pressure of gas, it is conveyed in first order eddy current three-phase blender by air delivering pipeline.The pressure of ozone gas
(i.e. gas boosting pump or the pressure of air compressor machine outlet) slightly larger than intake pump pressure (i.e. slightly larger than 0.6～
0.9MPa).Ozone dosage is 0.006～0.010gO3/ gDS (dewatered sludge).
Beneficial effects of the present invention:
The ozone microbubble floatation thickening device of the present invention, for carrying out quenched concentration to mud.The gas of the present invention
Floating enrichment facility and the quenched method for concentration of mud, by by a kind of special eddy current three-phase mixer application in mud
Floatation thickening technique, and to propose the source of the gas used by air supporting be ozone, it is possible to obtain high mass dryness fraction, be tempered floating
Slag, this scum silica frost is dehydrated in can being pumped directly into follow-up supertension elasticity squeezer or sheet frame squeezer.
The ozone microbubble floatation thickening device of the present invention and the quenched method for concentration of mud, it is possible to realize mud quenched
(PAM medicament and waste water, ozone are simultaneously introduced eddy current three-phase blender, are mixed by multi-stage vortex three-phase
It is quenched that the physical action of device and ozone achieve mud to the oxidation effect of mud), alternative iron salt+
The quenched mode of Calx, improves the dewatering of mud；It is obtained in that the air-flotation scum of higher mass dryness fraction is (aqueous simultaneously
Rate 90～95%), it is beneficial to follow-up supertension elasticity squeezer or the dehydration of sheet frame dewaterer.
The ozone microbubble floatation thickening device of the present invention, has a following characteristic:
Core component in A, ozone microbubble floatation thickening device is the water of a kind of special tectonic, gas, admittedly three
Phase eddy current mixing reactor (i.e. eddy current three-phase blender), collects molten gas, differential stirring, granule attachment, flco
Aerating, molten gas nucleus generate and bubble release function is in one；By eddy current three-phase blender, flco formed with
Bubble nucleus was formed in the same time, caused flco huge and porous, rose rapidly；All incoming waste water quilts
100% aerating, it is not necessary to water circulating pump and clear water reserviors；Reactive tank is separated into three rooms by weir plate: contact chamber, point
From room and clear water collecting chamber；In eddy current three-phase blender in contact chamber, medicament and contaminant particle (solid),
Water, gas three contact mixing, and eddy current produces microbubble and also implants in pollutant, and pollutant are captured, and forms wadding
Body；Entrained air bubbles in separation chamber, flco, floats on liquid level, completes solid-liquid separation, and rear portion only needs to scrape
Slag；Clear water water outlet is collected at clear water collecting chamber.This device PAM dosing is few, the moisture content of scum silica frost
More dry；
B, the source of the gas of ozone microbubble floatation thickening device are slightly larger than 0.6～the ozone of 0.9MPa pressure, profit
Air-flotation scum is made to obtain by the strong oxidizing property of ozone quenched；
C, the high mass dryness fraction of mud concentrate and mud dosing is quenched is carried out simultaneously, and air-flotation scum is follow-up without dosing again
Quenched, it is directly entered supertension elasticity squeezer or the dehydration of sheet frame dewaterer.
The technical characteristic of the ozone microbubble floatation thickening device of the present invention is, it is achieved that equipment is integrated, dirty
Mud is quenched, the innovation of Mud up-floating, eliminate dissolved air water prepare, the bubble of circulation and slow poor efficiency attached
Process, it is achieved that unprecedented scum silica frost removal efficiency (scum silica frost clearance reaches more than 99%), save 90%
Above floor space and a large amount of capital expenditure expense.Owing to removal efficiency is high, rear class can be substantially reduced and process
The load of technique also increases its stability.Owing to produced scum silica frost is aqueous less and closely knit, can be greatly reduced
Scum silica frost houses the volume in pond.Make that whole technique is the most reliable, floor space and operating cost are all substantially reduced.
The principle of the ozone microbubble floatation thickening device of the present invention is contrary with gravity concentration, and bubble adhesion is suspending
As carrier on thing, form the gas-solid mixture that density is lighter than water, float to the water surface, so that suspended contamination
Being separated from water, then scrape into mud drainage slot with scraper plate by thickened sludge, sludge water is then discharged from the bottom of pond.The present invention's
There is the ozone microbubble floatation thickening device of the quenched effect of mud, compare gravity concentration, there is concentration speed fast,
The features such as the time of staying is short, scum silica frost moisture content is low, effluent quality is high, floor space is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention a kind of ozone microbubble floatation thickening device；
Fig. 2 is the workflow schematic diagram of the ozone microbubble floatation thickening device of the present invention；
Fig. 3 is the structural representation of the eddy current three-phase blender of six grades of series connection in the present invention.
In figure: 1. intake pump 2. effusion meter 3. air compressor machine 4. intake valve 5. reactive tank A, contact chamber B, separation chamber C,
Clear water collecting chamber 6. dreg collecting slot 7. liquidometer 8. slag remover 9. air bleeding valve 10. Pressure gauge 11. eddy current three-phase mixes
Water inlet pipe at the lateral inflow mouth of clutch 12. drug-feeding tube 13. water inlet manifold 14. eddy current three-phase blender
15. bypass ascending pipe 16, ozonator 17, adding of agent pump 18, medicament preparation facilitiess
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiment 1
As shown in Figure 1, Figure 3, one ozone microbubble floatation thickening device of the present invention, it includes a reactive tank
5, above reactive tank, it is arranged side by side eddy current three-phase blender 11 that six groups (six grades) connect (from water outlet side to entering
Water side is arranged in order as the first order, the second level ... the 6th grade), it is provided with one-level in every grade of eddy current three-phase blender
Reactor；Reactive tank is separated into three rooms by weir plate from influent side to water outlet side, it may be assumed that contact chamber A, separation chamber
B and clear water collecting chamber C；Separation chamber B is provided above slag remover 8, and slag remover 8 other end extends horizontally to collection
Above slag chute 6；The top of dreg collecting slot 6 is less than the bottom of eddy current three-phase blender 11；Dreg collecting slot 6 bottom one
Being most to tilt, the inclination end, is positioned at above clear water collecting chamber C；Water inlet manifold 13 one end goes out with intake pump 1
Mouth connects；Water inlet manifold 13 other end is connected with the lateral inflow mouth of first order eddy current three-phase blender；Always enter
Water pipe 13 is provided with effusion meter 2；The bottom outlet of first order eddy current three-phase blender and second level eddy current three
The lateral inflow mouth of phase blender connects；... by that analogy, the bottom water outlet of previous stage eddy current three-phase blender
Mouth is connected with the lateral inflow mouth of rear stage eddy current three-phase blender；Afterbody (the 6th grade) eddy current three-phase mixes
The bottom outlet of clutch is directly connected to a release pipe；Release pipe outlet is positioned at reactive tank contact chamber A bottom；
Water inlet pipe 14 at the lateral inflow mouth of every primary vortex three-phase blender is provided with vertical bypass ascending pipe
15；Medicament preparation facilities 18 outlet is connected with adding of agent pump 17 entrance；Drug-feeding tube 12 one end is thrown with medicament
Add pump 17 outlet connect, drug-feeding tube 12 other end respectively with the second level, the side of third level eddy current three-phase blender
The bypass ascending pipe 15 of water inlet, face connects；Ozonator 16 outlet is connected with air compressor machine 3 entrance；Enter
Trachea one end is connected with air compressor machine 3 outlet, and the other end connects with the top air inlet of first order eddy current three-phase blender
Connect；The gas outlet, top of third level eddy current three-phase blender connects an exhaustor；Exhaustor is provided with air bleeding valve
9.Every primary vortex three-phase blender top is equipped with Pressure gauge 10.Air inlet pipe is provided with intake valve 4, air inlet
It is additionally provided with check valve after valve 4.It also is provided with check valve on drug-feeding tube 12.Dreg collecting slot 6 is provided with liquidometer 7,
For controlling the start and stop of follow-up deslagging pump.
The ozone microbubble floatation thickening device of the present invention is the one of pressure air-dissolving air-float, this by microbubble with
Micro-floccule concurrently forms and combines, and then the process jointly growing into band gas flco is referred to as " copolymerization ".
Bubble is the least, is more easily accessible flco, or quilt wadding catches, thus forms stable copolymerization flco.It
Time delay discharges the microbubble of highly dense, and when being sufficiently mixed with mixed reaction water of offeing medicine, both are simultaneously
Growing up, the band gas flco so formed, in floating-upward process, has floating fast, and scum silica frost is stable, the tolerance of consumption
The advantage such as few.
The design principle of the ozone microbubble floatation thickening device of the present invention is: utilize eddy current three-phase blender,
Waste water is directly added into gas and medicament, completes molten gas and stirring simultaneously, finally realize self-skimming.Eddy current three-phase
The stirring of the molten gas of blender collection, differential, flco aerating, granule attachment, molten gas nucleus generate and bubble release function
In one.Its workflow includes: 2. the highest pressure solution gas stretch medicament and be 3. sufficiently stirred for 4. nucleus formation 5.
Bubble condenses 6. flco and merges the quenched 8. circular flocculation of 7. scum silica frost.Eddy current three-phase blender and tradition molten gas gas
Floating difference: maximally utilise chemical agent；Form ultralight hollow flco, make flco moisture content and proportion
Reducing, flco is solid and has and the strongest goes up i, beneficially self-skimming voluntarily.
As in figure 2 it is shown, the work process of the ozone microbubble floatation thickening device of the present invention is: (1) intakes:
Use pressurization intake pump that from regulating reservoir input multi-stage vortex three-phase blender, waste water is formed eddy current；(2) aerating
/ dosing mix and blend: in multi-stage vortex three-phase blender, pressurized ozone is directly dissolved in incoming waste water,
And then chemical agent directly adds to molten gas-liquid, completes medicament and contaminant particle (solid), water, gas
Three-phase mixes；Agent molecule is initially coil-shape, and agent molecule stretching is put forward effect by eddy current, is sufficiently stirred for；(3)
Eddy current produces microbubble and implants in float: medicament and contaminant particle, water, gas mixture are discharged into reaction
After in the contact chamber A of groove, then weir flow enters separation chamber B, and eddy current produces microbubble and implants in pollutant,
Pollutant are captured, and flco is formed and floats；(4) release float；(5) slag remover is utilized to automatically remove floating
Slag；Scum silica frost (mud) enters dreg collecting slot 6 and collects or process；Clear water is collected, by instead at clear water collecting chamber C
Trench bottom is answered to discharge.
The ozone microbubble floatation thickening device of the present invention, produces microbubble by eddy current three-phase blender, adheres to
As carrier in float, form the gas-solid mixture that density is lighter than water, float to the water surface, so that suspending
Thing impurity is separated from water；Can effectively remove the solid suspended particles in complex wastewater, oils, turbidity and organic
Thing etc.；Effectively facilitate the efficient process of pollutant, reach outstanding effects of energy saving and emission reduction.
The ozone microbubble floatation thickening device of the present invention quotes external eddy current three-phase hybrid technology, at eddy current three-phase
In blender, current produce fierce eddy current, thus reach medicament, water, the differential stirring of gas and mixing.Use
Flocculant is injected the raw water tubes (i.e. water inlet pipe) import department's (i.e. eddy current three-phase close to reaction zone by bypass ascending pipe
At the lateral inflow mouth of blender), the caliber of bypass ascending pipe is more small than the caliber of raw water tubes, and bypass is injected
The aperture of pipe is perpendicular to the direction injection of raw water tubes current with the biggest speed, and flocculant is injected at former water current disorderly
(in breach and near nodal position) when of fatigue resistance maximum, the most easily quickly mix with former water.Flocculation
Agent mixing can be divided into three sections, and first paragraph is potential barrier section, and in this section, the flow velocity of jet is constant, and jet starts and week
Enclose the mixing of former water；Second segment is deviation section, in raw water tubes under the effect of current jet to water (flow) direction deviation,
And mix with former water further；3rd section is whirlpool section, if there is carried interest whirlpool above the water flow section of jet,
Make jet spread rapidly, be thoroughly mixed with former water.In a word, through breach and node, occur violent convergence,
Disperse, turn to, tear, therefore form countless little whirlpool, make medium turbulent fluctuation and Surface Renewal speed greatly speed up,
Liquid-film resistance is greatly lowered, so mass transfer rate is the highest.
The feature of the ozone microbubble floatation thickening device of the present invention is as follows:
1, high pressure solution gas: pressurized ozone 100% being dissolved in and become a mandarin in sewage, the most pneumatically supported bubble is attached
Theory, this step realizes contaminant molecule and contacts attached under dissolved state of gas with the least limit of bubble
?；
2, medicament is stretched: generally polymer is in strand when adding and kinks agglomerating state, and this product is peculiar
Hi-mixer can will kink agglomerating strand stretching become strip strand, make agent molecule chain institute electrically charged
Can fully be exposed utilization, be reduced waste；
3, it is sufficiently stirred for: multi-stage, efficient blender realizes the abundant of medicament and pollutant by various effective speeds
Contact and mix.Enable pollutant by entrained by agent molecule chain and the electric charge that exposes adsorbs securely；
4, scum silica frost is formed: along with the reduction of pressure, the gas of the dissolved gradually forms nothing by pollutant flco
The superfine bubble of number, is grown directly upon among mud flco；
5, bubble cohesion: bubble constantly merges expansion, produces the granule of spongy flco；
6, flco merges: during flocs float, the rapid coalescence of tiny flco, and bubble is also anxious simultaneously
Acute expansion, ties up the space of flco internal clearance water, makes flco moisture content and proportion reduce further, and flco is solid
And have and the strongest go up i voluntarily；
7, quenched scum silica frost: scum silica frost floats up to Chi Mianshang, mutually piles up, is bonded to scum silica frost blanket, is formed on the whole
Floating, moisture content reduces further；
8, effluent collection: the water outlet of floatation thickening is discharged by reaction tank bottom, enters collector pipe and collects clear water
District；
9, scum layer controls: controls water outlet liquid level by regulation weir plate, thus controls the thickness of scum layer.
Embodiment 2-5
It is quenched dense that a kind of ozone microbubble floatation thickening device utilized described in embodiment 1 of the present invention carries out mud
The method of contracting is as follows: (embodiment 2-5 processes the most in this way)
Mud (domestic sewage sludge, industrial wastewater sludge, copper water-supply pipe) uses pressurization intake pump, by entering
Water pipe, is conveyed in multi-stage vortex three-phase blender formation eddy current, i.e. from first order eddy current three-phase blender successively
What serially enter below in eddy current three-phase blender；After ozone has been prepared by ozonator, pass through gas
Booster pump or air compressor machine compression, after promoting the pressure of ozone gas, be conveyed into first order eddy current three by air inlet pipe
In phase blender；PAM medicament, after medicament preparation facilities prepares, uses pressurized medicament to add pump, by entering
Pencil, adds on the second level and third level eddy current three-phase blender, from the lateral inflow of eddy current three-phase blender
Bypass ascending pipe at Kou injects (being perpendicular to water (flow) direction inject)；Multistage whirlpool in the contact chamber of reactive tank
Stream three-phase blender in, pressurized ozone is directly dissolved in incoming waste water, and then PAM medicament directly add to
In molten gas-liquid, medicament contacts with contaminant particle (solid), water, gas three mixing, and eddy current produces microbubble
And implant in pollutant, pollutant are captured, and form flco；Entrained air bubbles in separation chamber, flco, on
Float to be formed on liquid level scum silica frost, complete solid-liquid separation；Utilizing slag remover to automatically remove scum silica frost, scum silica frost enters collection slag
Groove is collected or is processed；Collect clear water at clear water collecting chamber, reaction tank bottom discharge.
Moisture content is the mud of 98.5～99.5%, through this ozone microbubble floatation thickening device carry out quenched,
After concentration, it is thus achieved that the scum silica frost of higher mass dryness fraction, the moisture content of this air-flotation scum is 90～95%；After this is quenched
Scum silica frost without adding any medicament, supertension elasticity squeezer can be fed directly to and squeeze, after squeezing
Moisture content of the cake can reach 55～65%.
PAM added amount of chemical is 0.002～0.006gPAM/gDS (dewatered sludge), and ozone dosage is
0.006～0.010gO3/ gDS (dewatered sludge).Intake pump pressure is 0.6～0.9Mpa；The pressure of ozone gas is (i.e.
Gas boosting pump or the pressure of air compressor machine outlet) slightly larger than intake pump pressure (i.e. slightly larger than 0.6～0.9MPa)；
The pressure that adds of PAM adding of agent pump is slightly larger than intake pump pressure (i.e. slightly larger than 0.6～0.9MPa).The first order
The pressure of eddy current three-phase blender is the highest (0.6～0.9Mpa), after pressure in what eddy current three-phase blender
Successively decrease the most one by one.
Embodiment 2: process object be certain sanitary sewage water source be that the second pond of main sewage treatment plant is discharged
Excess sludge (moisture content 99%), use embodiment 1 ozone microbubble floatation thickening device carry out quenched,
Concentration: PAM dosage is 0.003gPAM/gDS (dewatered sludge), ozone dosage is 0.00625gO3/gDS
(dewatered sludge)；Intake pump pressure is about 0.8Mpa；Pressure (i.e. gas boosting pump or the pneumatics of ozone gas
The pressure of machine outlet) slightly larger than intake pump pressure (slightly larger than 0.8MPa)；PAM adding of agent pump add pressure
Power is slightly larger than intake pump pressure (slightly larger than 0.8MPa).The pressure of first order eddy current three-phase blender is the highest (about
0.8Mpa), the pressure in follow-up eddy current three-phase blender successively decrease one by one (as 0.7Mpa, 0.6Mpa, 0.5Mpa,
0.4Mpa, 0.3Mpa or 0.2Mpa, measured value may have deviation with above-mentioned data).
After, concentration quenched through the ozone microbubble floatation thickening device of the present invention, it is thus achieved that air-flotation scum
Moisture content is 93%.Scum silica frost after this is quenched no longer adds any medicament, is fed directly to the squeezing of supertension elasticity
Machine squeezes, and the moisture content of the cake after squeezing reaches 59%.
Embodiment 3: process object be certain grocery trade waste water be that the second pond of main industrial effluent treatment plant is discharged
Excess sludge (moisture content 98.7%), use embodiment 1 ozone microbubble floatation thickening device adjust
Matter, concentration: PAM dosage is 0.0035gPAM/gDS, ozone dosage is 0.008gO3/ gDS is (dry
Mud)；Intake pump pressure is about 0.6Mpa；The pressure of ozone gas (is slightly larger than slightly larger than intake pump pressure
0.6MPa)；The pressure that adds of PAM adding of agent pump is slightly larger than intake pump pressure (slightly larger than 0.6MPa).The
The pressure of primary vortex three-phase blender is the highest (about 0.6Mpa), the pressure in follow-up eddy current three-phase blender by
Individual successively decrease.
After, concentration quenched through the ozone microbubble floatation thickening device of the present invention, it is thus achieved that air-flotation scum
Moisture content is 94%.Scum silica frost after this is quenched no longer adds any medicament, is fed directly to the squeezing of supertension elasticity
Machine squeezes, and the moisture content of the cake after squeezing reaches 62%.
Embodiment 4: process object be certain sanitary sewage water source be that the second pond of main sewage treatment plant is discharged
Excess sludge (moisture content 98.5%), use embodiment 1 ozone microbubble floatation thickening device carry out quenched,
Concentration: PAM dosage is 0.006gPAM/gDS, ozone dosage is 0.010gO3/ gDS (dewatered sludge)；
Intake pump pressure is about 0.7Mpa；The pressure of ozone gas is slightly larger than intake pump pressure (slightly larger than 0.7MPa)；
The pressure that adds of PAM adding of agent pump is slightly larger than intake pump pressure (slightly larger than 0.7MPa).First order eddy current three
The pressure of phase blender is the highest (about 0.7Mpa), and the pressure in follow-up eddy current three-phase blender successively decreases one by one.
After the ozone microbubble quenched concentration of floatation thickening device of the present invention, it is thus achieved that air-flotation scum contain
Water rate is 90%.Scum silica frost after this is quenched no longer adds any medicament, is fed directly to supertension elasticity squeezer
Squeezing, the moisture content of the cake after squeezing reaches 55%.
Embodiment 5: process object be certain grocery trade waste water be that the second pond of main industrial effluent treatment plant is discharged
Excess sludge (moisture content 99.5%), use embodiment 1 ozone microbubble floatation thickening device adjust
Matter, concentration: PAM dosage is 0.002gPAM/gDS, ozone dosage is 0.006gO3/ gDS is (dry
Mud)；Intake pump pressure is about 0.9Mpa；The pressure of ozone gas (is slightly larger than slightly larger than intake pump pressure
0.9MPa)；The pressure that adds of PAM adding of agent pump is slightly larger than intake pump pressure (slightly larger than 0.9MPa).The
The pressure of primary vortex three-phase blender is the highest (about 0.9Mpa), the pressure in follow-up eddy current three-phase blender by
Individual successively decrease.
After the ozone microbubble quenched concentration of floatation thickening device of the present invention, it is thus achieved that air-flotation scum contain
Water rate is 95%.Scum silica frost after this is quenched no longer adds any medicament, is fed directly to supertension elasticity squeezer
Squeezing, the moisture content of the cake after squeezing reaches 65%.
Claims (10)
1. an ozone microbubble floatation thickening device, it is characterised in that it includes a reactive tank, in reaction
It is arranged side by side the eddy current three-phase blender of 4～6 grades of series connection above groove, is the first order by water outlet side, by influent side is
Afterbody；Reactive tank is separated into three rooms by weir plate from influent side to water outlet side: contact chamber, separation chamber and clear
Water collecting chamber；Separation chamber is provided above slag remover, arranges dreg collecting slot below the slag remover other end；Water inlet manifold one
Holding and be connected with intake pump outlet, the other end is connected with the lateral inflow mouth of first order eddy current three-phase blender；First
The level bottom outlet of eddy current three-phase blender is connected with the lateral inflow mouth of second level eddy current three-phase blender；With
This analogizes, and the bottom outlet of previous stage eddy current three-phase blender enters with the side of rear stage eddy current three-phase blender
The mouth of a river connects；The bottom outlet of afterbody eddy current three-phase blender is directly connected to a release pipe；Release pipe
Outlet is positioned at reactive tank contact chamber bottom；On water inlet pipe at the lateral inflow mouth of every primary vortex three-phase blender
It is provided with bypass ascending pipe；The outlet of medicament preparation facilities is connected with adding of agent pump intake；Drug-feeding tube one end and medicament
Adding pump discharge to connect, drug-feeding tube other end side with the second level, third level eddy current three-phase blender respectively is entered
Bypass ascending pipe at the mouth of a river connects；Ozone generator outlet is connected with gas boosting pump or air compressor machine entrance；Enter
Trachea one end exports with gas boosting pump or air compressor machine and is connected, the other end and the top of first order eddy current three-phase blender
Portion's air inlet connects；The gas outlet, top of third level eddy current three-phase blender connects an exhaustor；On exhaustor
It is provided with air bleeding valve.
2. ozone microbubble floatation thickening device as claimed in claim 1, it is characterised in that slag remover is another
One end extends horizontally to above dreg collecting slot；The top of dreg collecting slot is less than the bottom of eddy current three-phase blender；Dreg collecting slot
Bottom is a greater part of is to tilt, and the inclination end is positioned at above clear water collecting chamber.
3. ozone microbubble floatation thickening device as claimed in claim 1 or 2, it is characterised in that each
Water inlet pipe at the lateral inflow mouth of level eddy current three-phase blender is vertical with bypass ascending pipe.
4. ozone microbubble floatation thickening device as claimed in claim 1 or 2, it is characterised in that always enter
Water pipe is provided with effusion meter；Every primary vortex three-phase blender top is equipped with Pressure gauge.
5. ozone microbubble floatation thickening device as claimed in claim 1 or 2, it is characterised in that air inlet
Pipe is provided with intake valve, is provided with check valve after intake valve.
6. ozone microbubble floatation thickening device as claimed in claim 1 or 2, it is characterised in that enter medicine
Pipe is provided with check valve；Dreg collecting slot is provided with liquidometer.
7. the mud utilizing ozone microbubble floatation thickening device as claimed in claim 1 to carry out is quenched
Method for concentration, it is characterised in that:
Mud uses pressurization intake pump, by water inlet pipe, is conveyed in multi-stage vortex three-phase blender formation eddy current,
What i.e. serially enter successively below eddy current three-phase blender from first order eddy current three-phase blender；Ozone is by smelly
After prepared by Oxygen Generator, compressed by gas boosting pump or air compressor machine, after promoting the pressure of ozone gas,
It is conveyed in first order eddy current three-phase blender by air inlet pipe；PAM medicament prepares through medicament preparation facilities
After, use pressurized medicament to add pump, by drug-feeding tube, add at the second level or third level eddy current three-phase blender
On, the bypass ascending pipe at the lateral inflow mouth of eddy current three-phase blender, it is perpendicular to water (flow) direction and injects or oblique
To injection；In multi-stage vortex three-phase blender in the contact chamber of reactive tank, pressurized ozone be directly dissolved in into
In stream waste water, and then PAM medicament directly adds to molten gas-liquid, medicament and contaminant particle, water, gas three
Contact mixing, and eddy current produces microbubble and implants in pollutant, and pollutant are captured, and forms flco；Dividing
Entrained air bubbles in room, flco, floats to be formed on liquid level scum silica frost, completes solid-liquid separation；Utilize slag remover
Automatically removing scum silica frost, scum silica frost enters dreg collecting slot and collects or process；Clear water is collected, by reactive tank at clear water collecting chamber
Bottom is discharged.
8. the quenched method for concentration of mud as claimed in claim 7, it is characterised in that: moisture content is
98.5～the mud of 99.5%, after this ozone microbubble floatation thickening device carries out quenched, concentration, obtain
Obtain the scum silica frost that moisture content is 90～95%；Scum silica frost after this is quenched, without adding any medicament, can be fed directly to
Supertension elasticity squeezer squeezes, and the moisture content of the cake after squeezing can reach 55～65%.
9. the quenched method for concentration of mud as claimed in claim 7 or 8, it is characterised in that:
Intake pump pressure is 0.6～0.9Mpa；The pressure of ozone gas i.e. gas boosting pump or air compressor machine outlet pressure
Power is slightly larger than intake pump pressure；The pressure that adds of adding of agent pump is slightly larger than intake pump pressure.
10. the quenched method for concentration of mud as claimed in claim 7 or 8, it is characterised in that:
The dosage of PAM medicament is 0.002～0.006gPAM/gDS, and ozone dosage is
0.006～0.010gO3/gDS。
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Cited By (6)
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| CN107827187A (en) * | 2017-11-06 | 2018-03-23 | 深圳市长天长空智能设备科技有限公司 | A kind of water sludge interface nanometer air floatation machine |
| CN109851091A (en) * | 2019-01-18 | 2019-06-07 | 中国石油工程建设有限公司 | The efficient microbubble oil removal by air bubbling oil removal system of oil gas field brine waste and technique |
| CN110950414A (en) * | 2019-12-23 | 2020-04-03 | 湖南中拓环境工程有限公司 | A high-efficient air supporting device for sewage treatment |
| CN111018069A (en) * | 2019-12-09 | 2020-04-17 | 河南大禹水处理有限公司 | Method for recovering microbial mycoprotein |
| CN112028161A (en) * | 2020-09-23 | 2020-12-04 | 重庆坤泉环境工程有限公司 | Air supporting equipment and sewage treatment system |
| CN114292005A (en) * | 2021-12-31 | 2022-04-08 | 同济大学 | Method and system for strengthening air flotation concentration reduction and harmlessness of sludge by using ozone |
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| CN107827187A (en) * | 2017-11-06 | 2018-03-23 | 深圳市长天长空智能设备科技有限公司 | A kind of water sludge interface nanometer air floatation machine |
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