CN103086456A - Method for strengthening separation effect of air floatation process by using micro-bubble modification technology - Google Patents
Method for strengthening separation effect of air floatation process by using micro-bubble modification technology Download PDFInfo
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Abstract
The invention relates to a method for strengthening the separation effect of an air floatation process by using a micro-bubble modification technology, and in particular relates to an air floatation separation process. The invention aims to solve the problems that the existing air floatation process is high in treatment drug dosage before coagulating, long in reaction time and complex in control, and the electrostatic repulsion between bubbles with same negative charges and a target removing material can not be fundamentally eliminated. The method comprises the following steps of: 1, adding a micro-bubble positive charge modification drug into a micro-bubble generation system of an air floatation system; 2, generating micro-bubbles with positive charges to form a stable scum layer; and 3, removing the scum layer. By adopting the method, a coagulation pretreatment stage in the existing air floatation technology is not needed, and the micro-bubble positive charge modification drug is directly added during the generation of the micro-bubbles to generate a functional micro-bubble surface with positive charges, so that the separation and collection efficiency during air floatation is improved. The method is low in technical requirement, short in treatment time and low in construction and running cost, and ensures that a process combination is simplified. The method is used for strengthening the separation effect of the air floatation process.
Description
Technical field
The present invention relates to dissolved air flotation technique.
Background technology
Effective collision and the sticking probability of microbubble and target particles thing in the air-float technology process are the principal elements that determines air flotation effect.In the adhesion process of microbubble and target particles thing, electrostatic force plays a leading role again.Use in the overwhelming majority under the occasion of air-float technology, the object removal thing is due to self structure ionization, to the absorption of negatively charged ion, ligand complex effect etc., all demonstrate electronegativity in various degree, such as: colloidal solid, Humus larger molecular organics, frustule, pathogenic micro-organism, oil droplet, mineral grain etc., the microbubble that produces in the air-float technology process simultaneously is aobvious electronegativity in various degree also, this just caused before microbubble and the adhesion of object removal thing, just must overcome the effect of electrostatic repulsion.Conventional air-float technology combination is that coagulation pretreatment was set before air-float technology, by dosing coagulant, the object removal thing is taken off surely, promotes the combination of itself and microbubble.But, can only be to object removal thing electronegativity generation reduction to a certain degree by dosing coagulant, the transformation of essence does not occur in its electronegativity, still to overcome the energy barrier that produces due to electrostatic repulsion in the cohesive process of itself and microbubble, cause the sticking probability of microbubble and target isolate lower, adding in a large number of the setting of coagulation pretreatment section and coagulating agent, increased construction and the running cost of air-float technology simultaneously.Because the flocculu shape that forms in the coagulation pretreatment process is different, itself and microbubble action effect differ larger in addition, if will be formed with the fractal flco of good form that is beneficial to the dissolved air flotation process, need to carry out strict complicated control to the coagulation pretreatment process.
In sum, air-float technology exists coagulation pre-treatment dosage large at present, and long reaction time is controlled complexity, can not fundamentally be eliminated with the Coulomb repulsion problem between negative charge bubble of the same race and object removal thing.
Summary of the invention
The present invention will solve present air-float technology to exist coagulation pre-treatment dosage large, long reaction time, control complexity, can not fundamentally eliminate with the Coulomb repulsion problem between negative charge bubble of the same race and object removal thing, and the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect is provided.
One, microbubble positive charge improved chemical is added in the microbubble generation systems of air-flotation system, microbubble positive charge improved chemical and water and source of the gas mix, in pressure air-dissolving tank, form the supersaturation dissolved air water, wherein, the dosage of microbubble positive charge improved chemical is 0.1mg/L ~ 30mg/L, and the pressure air-dissolving tank internal pressure remains on 0.3MPa ~ 0.6MPa, and the water in the supersaturation dissolved air water and the volume ratio of pending water are 5% ~ 70%;
Air-flotation system comprises air flotation pool body, microbubble generation systems and scum collection system, the microbubble generation systems is pressure air-dissolving microbubble generation systems or Airfloat pump microbubble generation systems, pressure air-dissolving microbubble generation systems is made of air compressor, pressure air-dissolving tank, booster water pump and reliever, and Airfloat pump microbubble generation systems is made of Airfloat pump, pressure air-dissolving tank and reliever; Scum collection system is arranged at air flotation pool body upper end, the air flotation pool body is divided into scum silica frost receiving tank, mixing zone and disengaging zone, the scum silica frost receiving tank is arranged on the left of the air flotation pool body, the scum silica frost receiving tank outside forms the mixing zone jointly with the baffle plate of not exclusively sealing, be provided with the baffle plate of incomplete sealing between mixing zone and disengaging zone, lower end, left side, mixing zone is provided with water-in, the water outlet of pressure air-dissolving tank is communicated with reliever, reliever is placed in the lower end, mixing zone, close on water-in, the perforation header is placed in lower end, right side, disengaging zone and communicates with water outlet;
When if the microbubble generation systems is pressure air-dissolving microbubble generation systems, the air outlet of air compressor is communicated with the inlet mouth of pressure air-dissolving tank, and the posticum of booster water pump is communicated with the water-in of pressure air-dissolving tank;
When if the microbubble generation systems is Airfloat pump microbubble generation systems, the water outlet of Airfloat pump is communicated with the water-in of pressure air-dissolving tank;
Two, pending water enters the mixing zone by the water-in of air flotation pool body, the dissolved air water of supersaturation simultaneously produces the positive charge microbubble by reliever and enters in the mixing zone, mix with pending water, then enter the disengaging zone, form stable scum layer on the surface, disengaging zone, wherein the residence time of pending water in the air flotation pool body is 10min ~ 40min;
Three, adopt the scum collection system layer that scums, clean water is collected by the perforation header, completes the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect.
The invention has the beneficial effects as follows:
The present invention utilizes the microbubble modification technology to strengthen the method for air-float technology separating effect, by in micro bubble generation device, add metal coagulating agent, cats product, cationic polymers, chitosan, modified chitosan derivative microbubble is carried out the positive charge modification.Metallic cation in the metal coagulating agent passes through the mode of directly absorption, coordination combination or oxyhydroxide deposition at the microbubble surface aggregation, make the aobvious positive polarity in microbubble surface portion zone, the hydrophobic side of cats product, cationic polymers, chitosan, modified chitosan derivative is by the hydrophobic force effect, be adsorbed on the microbubble surface, positively charged water-wet side makes the aobvious positive polarity in microbubble surface portion zone towards the liquid phase main body.
Humus larger molecular organics, colloid and mineral grain in micro pollution drinking water source, cause and smell all in various degree aobvious electronegativities of flavor material, nanoparticle, giardia lamblia and Cryptosporidium, pathogenic micro-organism, the present invention uses microbubble positive charge modification technology in air-float technology, nontoxic by adding, harmless, the microbubble properties-correcting agent of readily biodegradable, microbubble is carried out modification, can improve microbubble positively charged after modification and the adhesive efficiency of the object removal thing in water, obtain desirable separation efficiency.Namely satisfy the requirement of purification of water quality, can not bring secondary pollution owing to adding chemical agent again.
The algae of the eutrophication water of algae excessive propagation administer the field and take algal culture, results, deep processing in the purpose production process, the separation of algae, to collect be vital.The frustule surface is all with the negative charge of different electric weight, the present invention uses microbubble positive charge modification technology in air-float technology, by adding the microbubble improved chemical, microbubble is carried out the positive charge modification, can improve the sticking probability of frustule in microbubble positively charged after modification and water, greatly improve separation, the collection effciency of alga cells, reduce the water ratio that contains the algae scum silica frost.
At petrochemical industry, all relate to the oil water separation process of oil-containing water, due to the aobvious electronegativity of oil droplet, the present invention uses microbubble positive charge modification technology in air-float technology, by adding the microbubble improved chemical, microbubble is carried out the positive charge modification, can improve the sticking probability of oil droplet in microbubble positively charged after modification and water, greatly improve the Separation and Recovery efficient of oil droplet.
In the mineral floating field, because the composition on pulverized coal particle, metal, organic and inorganic mineral grain surface is different, different zones shows electronegativity and on its surface, the present invention uses microbubble positive charge modification technology in air-float technology, by adding the microbubble improved chemical, microbubble is carried out the positive charge modification, can improve microbubble positively charged after modification and the sticking probability of water Minerals particle, greatly improve the Separation and Recovery efficient of mineral grain.
In sewage treatment area and mud concentration process, a large amount of organism, pathogenic micro-organism, mineral grain are adsorbed in suspensoid particulate matter and mud flco, these materials aobvious electronegativity in various degree, the present invention uses microbubble positive charge modification technology in air-float technology, by adding the microbubble improved chemical, microbubble is carried out the positive charge modification, the sticking probability of colloidal solid and mud flco in microbubble positively charged after modification and sewage be can improve, the separation efficiency of water pollutant and the thickening efficiency of mud greatly improved.And the moisture percentage in sewage sludge after microbubble positive charge modification air flotation technology is concentrated will be lower than the mud concentration technology of routine.
The present invention is in the selection of microbubble positive charge improved chemical, existing metallic cation coagulating agent, cats product, cationic polymers both can have been selected, also can select nontoxic, harmless, biotype tensio-active agent and the cationic polymers of readily biodegradable are as chitosan polymer and modified chitosan derivative.
The present invention utilizes the microbubble modification technology to strengthen the method for air-float technology separating effect, saved in existing air-float technology, the coagulation pretreatment section, directly add microbubble positive charge improved chemical in the microbubble generating process, produce positively charged functional microbubble surface, improve the separated and collected efficient of air supporting process.Technical requirements is not high, and the treatment time shortens, and construction and running cost are low, and process combination is simplified.
The present invention is used for strengthening the air-float technology separating effect.
Description of drawings
Fig. 1 is Pressurized dissolved-air floating system, A be air flotation pool body, B be microbubble generation systems, C be scum collection system, 1 for pressure air-dissolving tank, 2 for booster water pump, 3 for air compressor, 4 for mixing zone, 5 for reliever, 6 for disengaging zone, 7 for perforation header, 8 for water-in, 9 for water outlet, 10 for the scum silica frost receiving tank;
Fig. 2 is the Airfloat pump air-flotation system, A be air flotation pool body, B be microbubble generation systems, C be scum collection system, 1 for pressure air-dissolving tank, 4 for mixing zone, 5 for reliever, 6 for disengaging zone, 7 for perforation header, 8 for water-in, 9 for water outlet, 10 for scum silica frost receiving tank, 11 for Airfloat pump.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: present embodiment utilizes the microbubble modification technology to strengthen the method for air-float technology separating effect, specifically completes according to the following steps:
One, microbubble positive charge improved chemical is added in the microbubble generation systems B of air-flotation system, microbubble positive charge improved chemical and water and source of the gas mix, in pressure air-dissolving tank 1, form the supersaturation dissolved air water, wherein, the dosage of microbubble positive charge improved chemical is 0.1mg/L ~ 30mg/L, and pressure air-dissolving tank 1 internal pressure remains on 0.3MPa ~ 0.6MPa, and the water in the supersaturation dissolved air water and the volume ratio of pending water are 5% ~ 70%;
Air-flotation system comprises air flotation pool body A, microbubble generation systems B and scum collection system C, microbubble generation systems B is pressure air-dissolving microbubble generation systems or Airfloat pump microbubble generation systems, pressure air-dissolving microbubble generation systems is made of air compressor 3, pressure air-dissolving tank 1, booster water pump 2 and reliever 5, and Airfloat pump microbubble generation systems is made of Airfloat pump 11, pressure air-dissolving tank 1 and reliever 5; Scum collection system C is arranged at air flotation pool body A upper end, air flotation pool body A is divided into scum silica frost receiving tank 10, mixing zone 4 and disengaging zone 6, scum silica frost receiving tank 10 is arranged on air flotation pool body A left side, scum silica frost receiving tank 10 outsides form mixing zone 4 jointly with the baffle plate of not exclusively sealing, be provided with the baffle plate of incomplete sealing between mixing zone 4 and disengaging zone 6,4 lower ends, left side, mixing zone are provided with water-in 8, the water outlet of pressure air-dissolving tank 1 is communicated with reliever 5, reliever 5 is placed in 4 lower ends, mixing zone, close on water-in 8, perforation header 7 is placed in 6 lower ends, right side, disengaging zone and communicates with water outlet 9;
When if the microbubble generation systems is pressure air-dissolving microbubble generation systems, the air outlet of air compressor 3 is communicated with the inlet mouth of pressure air-dissolving tank 1, and the posticum of booster water pump 2 is communicated with the water-in of pressure air-dissolving tank 1;
When if the microbubble generation systems is Airfloat pump microbubble generation systems, the water outlet of Airfloat pump 11 is communicated with the water-in of pressure air-dissolving tank 1;
Two, pending water enters mixing zone 4 by the water-in 8 of air flotation pool body A, the dissolved air water of supersaturation simultaneously produces the positive charge microbubble by reliever 5 and enters in mixing zone 4, mix with pending water, then enter disengaging zone 6,6 surfaces form stable scum layer in the disengaging zone, and wherein the residence time of pending water in air flotation pool body A is 10min ~ 40min;
Three, adopt the scum collection system C layer that scums, clean water is collected by perforation header 7, completes the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect.
Present embodiment utilizes the microbubble modification technology to strengthen the method for air-float technology separating effect, saved in existing air-float technology, the coagulation pretreatment section, directly add microbubble positive charge improved chemical in the microbubble generating process, produce positively charged functional microbubble surface, improve the separated and collected efficient of air supporting process.Technical requirements is not high, and the treatment time shortens, and construction and running cost are low, and process combination is simplified.
Embodiment two: what present embodiment was different from embodiment one is: in step 1, microbubble positive charge improved chemical is metal coagulating agent, cats product, cationic polymers, chitosan or modified chitosan derivative.Other is identical with embodiment one.
In present embodiment, chitosan and modified chitosan derivative are nontoxic, harmless, have biocompatibility and biodegradable preferably, can use in the drink water purifying field.
Embodiment three: what present embodiment was different from embodiment one or two is: the metal coagulating agent is the one or more combination in aluminum chloride, Tai-Ace S 150, ferrous sulfate, ferric sulfate, iron(ic) chloride, poly-ferric chloride, polymerize aluminum chloride and polyaluminium sulfate.Other is identical with embodiment one or two.
Embodiment four: what present embodiment was different from one of embodiment one to three is: cats product is the one or more combination in fatty amines cats product, quaternary cationics, ring-type cats product, aggretion type cats product, fluorine-containing quaternary cationics, siliceous quaternary cationics and amine oxide cats product.Other is identical with one of embodiment one to three.
Embodiment five: what present embodiment was different from one of embodiment one to four is: cationic polymers is one or both combinations in polyamine cation polymkeric substance and polyquaternium cationoid polymkeric substance.Other is identical with one of embodiment one to four.
Embodiment six: what present embodiment was different from one of embodiment one to five is: modified chitosan is the chitosan derivatives after acidylate, amination, etherificate, esterification, grafting, crosslinked or blending reaction modification.Other is identical with one of embodiment one to five.
Chitosan derivatives in present embodiment after modification, have nontoxic, harmless, the advantage of readily biodegradable, and have higher positive charge density and water-soluble preferably.
Embodiment seven: what present embodiment was different from one of embodiment one to six is: if when in step 1, microbubble generation systems B is pressure air-dissolving microbubble generation systems, microbubble positive charge improved chemical adopt pressure air-dissolving tank 1 directly to add or tank before add, when if microbubble generation systems B is Airfloat pump microbubble generation systems, microbubble positive charge improved chemical adds before adopting pump.Other is identical with one of embodiment one to six.
Embodiment eight: what present embodiment was different from one of embodiment one to seven is: the water in step 1 in the supersaturation dissolved air water is pure water or floating rear water.Other is identical with one of embodiment one to seven.
Embodiment nine: what present embodiment was different from one of embodiment one to eight is: the source of the gas in step 1 in the supersaturation dissolved air water is air, oxygen, hydrogen, ozone or nitrogen.Other is identical with one of embodiment one to eight.
Embodiment ten: what present embodiment was different from one of embodiment one to nine is: in step 1, reliever 5 is micropore template reliever, reducing valve type reliever, TV type reliever or TJ type reliever.Other is identical with one of embodiment one to nine.
Adopt following examples checking beneficial effect of the present invention:
Embodiment one:
The present embodiment utilizes CTAB to strengthen air-float technology to the separating effect of microcystic aeruginosa as microbubble positive charge improved chemical, specifically completes according to the following steps:
One, cats product cetyl trimethylammonium bromide (CTAB) is added in the microbubble generation systems B of air-flotation system, CTAB and water and source of the gas mix, in pressure air-dissolving tank 1, form the supersaturation dissolved air water, wherein, the dosage of CTAB is 0.92mg/L, and pressure air-dissolving tank 1 internal pressure remains on 0.45MPa, and the water in the supersaturation dissolved air water and the volume ratio of pending water are 20%;
Two, pending water enters mixing zone 4 by the water-in 8 of air flotation pool body A, the dissolved air water of supersaturation simultaneously produces the positive charge microbubble by TV type reliever 5 and enters in mixing zone 4, mix with pending water, then enter disengaging zone 6,6 surfaces form stable scum layer in the disengaging zone, and wherein the residence time of pending water in air flotation pool body A is 10min;
Three, adopt the scum collection system C layer that scums, clean water is collected by perforation header 7, completes the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect.
The present embodiment microbubble generation systems B is pressure air-dissolving microbubble generation systems, microbubble positive charge improved chemical adopts pressure air-dissolving tank 1 directly to add, water in step 1 in the supersaturation dissolved air water is pure water, and the source of the gas in step 1 in the supersaturation dissolved air water is air.
Result shows, in microbubble positive charge modification air supporting process, is 7.5 * 10 at the microcystic aeruginosa starting point concentration
5± 2.3 * 10
4Under the starting condition of cells/mL, when the dosage as CTAB in pressure air-dissolving tank is 0.92mg/L, the frustule clearance is reached 64% of optimum, before and after air supporting, the zeta current potential on frustule surface does not change and all maintains-19.3 ± 1.3mV, most CTAB and microbubble effect are described, generate positively charged microbubble surface, with the frustule effect, the residual volume in Fu Houshui is not less.And in conventional air supporting process, directly CTAB is added in frustule solution, to reach to frustule 64% clearance, its dosage is 72.89mg/L, the former 80 times, and there is a large amount of CTAB residual in water after floating, causes the surface zeta potential current potential of frustule in floating rear water to become 6.2 ± 0.0mV by-19.3 ± 1.3mV.
By the explanation of this example, directly add the positive charge improved chemical in the microbubble generation systems, produce positively charged microbubble to the removal efficient of frustule, be far away higher than add the conventional air-float technology of coagulant at the air supporting pretreatment stage.
Embodiment two:
The present embodiment utilizes chitosan to strengthen air-float technology to the separating effect of microcystic aeruginosa as microbubble positive charge improved chemical, specifically completes according to the following steps:
One, chitosan is added in the microbubble generation systems B of air-flotation system, chitosan and water and source of the gas mix, in pressure air-dissolving tank 1, form the supersaturation dissolved air water, wherein, the dosage of chitosan is 0.83mg/L, and pressure air-dissolving tank 1 internal pressure remains on 0.45MPa, and the water in the supersaturation dissolved air water and the volume ratio of pending water are 20%;
Two, pending water enters mixing zone 4 by the water-in 8 of air flotation pool body A, the dissolved air water of supersaturation simultaneously produces the positive charge microbubble by TV type reliever 5 and enters in mixing zone 4, mix with pending water, then enter disengaging zone 6,6 surfaces form stable scum layer in the disengaging zone, and wherein the residence time of pending water in air flotation pool body A is 10min;
Three, adopt the scum collection system C layer that scums, clean water is collected by perforation header 7, completes the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect.
The present embodiment microbubble generation systems B is pressure air-dissolving microbubble generation systems, microbubble positive charge improved chemical adopts pressure air-dissolving tank 1 directly to add, water in step 1 in the supersaturation dissolved air water is pure water, and the source of the gas in step 1 in the supersaturation dissolved air water is air.
Result shows, in microbubble positive charge modification air supporting process, is 7.5 * 10 at the microcystic aeruginosa starting point concentration
5± 2.3 * 10
4Under the starting condition of cells/mL, when the dosage when chitosan in pressure air-dissolving tank is 0.83mg/L, the frustule clearance is reached maximum, maintain 68% left and right, before and after air supporting, the zeta current potential on frustule surface does not change and all maintains-21.8 ± 0.2mV, and most chitosans and microbubble effect are described, generates positively charged microbubble surface, only have a small part and frustule effect, the residual volume in Fu Houshui is less.
By the explanation of this example, directly add chitosan polymer as microbubble positive charge improved chemical in the microbubble generation systems, produce positively charged microbubble and not only can reach higher removal efficient to frustule, saved the coagulation pretreatment process of air supporting front end, and chitosan polymer is nontoxic, harmless, the characteristic of readily biodegradable also provides safeguard for the application that itself and dissolved air flotation technique are combined in the drink water purifying field.
Embodiment three:
The present embodiment utilizes amination modifying chitosan derivatives-Hydroxyproyl Trimethyl quaternary ammonium chitosan to strengthen air-float technology to the separating effect of microcystic aeruginosa as microbubble positive charge improved chemical, specifically completes according to the following steps:
One, Hydroxyproyl Trimethyl quaternary ammonium chitosan is added in the microbubble generation systems B of air-flotation system, Hydroxyproyl Trimethyl quaternary ammonium chitosan and water and source of the gas mix, in pressure air-dissolving tank 1, form the supersaturation dissolved air water, wherein, the dosage of Hydroxyproyl Trimethyl quaternary ammonium chitosan is 0.65mg/L, and pressure air-dissolving tank 1 internal pressure remains on 0.45MPa, and the water in the supersaturation dissolved air water and the volume ratio of pending water are 20%;
Two, pending water enters mixing zone 4 by the water-in 8 of air flotation pool body A, the dissolved air water of supersaturation simultaneously produces the positive charge microbubble by TV type reliever 5 and enters in mixing zone 4, mix with pending water, then enter disengaging zone 6,6 surfaces form stable scum layer in the disengaging zone, and wherein the residence time of pending water in air flotation pool body A is 10min;
Three, adopt the scum collection system C layer that scums, clean water is collected by perforation header 7, completes the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect.
The present embodiment microbubble generation systems B is Airfloat pump microbubble generation systems, and microbubble positive charge improved chemical adds before adopting pump, and the water in step 1 in the supersaturation dissolved air water is pure water, and the source of the gas in step 1 in the supersaturation dissolved air water is air.
Result shows, in microbubble positive charge modification air supporting process, is 7.5 * 10 at the microcystic aeruginosa starting point concentration
5± 2.3 * 10
4Under the starting condition of cells/mL, when the dosage of Hydroxyproyl Trimethyl quaternary ammonium chitosan is 0.65mg/L, the frustule clearance is reached maximum, maintain 87% left and right, before and after air supporting, the zeta current potential on frustule surface does not change and all maintains-20.3 ± 0.1mV, and most Hydroxyproyl Trimethyl quaternary ammonium chitosans and microbubble effect are described, generates positively charged microbubble surface, only have a small part and frustule effect, the residual volume in Fu Houshui is less.
By the explanation of this example, employing is carried out the high parents' chitosan derivatives of the good water solubility, the positive charge density that generate after modification as microbubble positive charge improved chemical to chitosan, can be in the situation that less dosage obtains the clearance higher to frustule.Saved the coagulation pretreatment process of air supporting front end, and chitosan derivatives the original biocompatibility of chitosan and biological degradation, nontoxic, harmless characteristics have been kept.Widened the application prospect that itself and dissolved air flotation technique are combined in the drink water purifying field.
Claims (10)
1. utilize the microbubble modification technology to strengthen the method for air-float technology separating effect, it is characterized in that utilizing the microbubble modification technology to strengthen the method for air-float technology separating effect, specifically complete according to the following steps:
One, microbubble positive charge improved chemical is added in the microbubble generation systems (B) of air-flotation system, microbubble positive charge improved chemical and water and source of the gas mix, in pressure air-dissolving tank (1), form the supersaturation dissolved air water, wherein, the dosage of microbubble positive charge improved chemical is 0.1mg/L ~ 30mg/L, and pressure air-dissolving tank (1) internal pressure remains on 0.3MPa ~ 0.6MPa, and the water in the supersaturation dissolved air water and the volume ratio of pending water are 5% ~ 70%;
air-flotation system comprises air flotation pool body (A), microbubble generation systems (B) and scum collection system (C), microbubble generation systems (B) is pressure air-dissolving microbubble generation systems or Airfloat pump microbubble generation systems, pressure air-dissolving microbubble generation systems is made of air compressor (3), pressure air-dissolving tank (1), booster water pump (2) and reliever (5), and Airfloat pump microbubble generation systems is made of Airfloat pump (11), pressure air-dissolving tank (1) and reliever (5), scum collection system (C) is arranged at air flotation pool body (A) upper end, air flotation pool body (A) is divided into scum silica frost receiving tank (10), mixing zone (4) and disengaging zone (6), scum silica frost receiving tank (10) is arranged on the left of air flotation pool body (A), scum silica frost receiving tank (10) outside forms mixing zone (4) jointly with the baffle plate of not exclusively sealing, be provided with the baffle plate of incomplete sealing between mixing zone (4) and disengaging zone (6), lower end, left side, mixing zone (4) is provided with water-in (8), the water outlet of pressure air-dissolving tank (1) is communicated with reliever (5), reliever (5) is placed in lower end, mixing zone (4), close on water-in (8), perforation header (7) is placed in lower end, right side, disengaging zone (6) and communicates with water outlet (9),
When if the microbubble generation systems is pressure air-dissolving microbubble generation systems, the air outlet of air compressor (3) is communicated with the inlet mouth of pressure air-dissolving tank (1), and the posticum of booster water pump (2) is communicated with the water-in of pressure air-dissolving tank (1);
When if the microbubble generation systems is Airfloat pump microbubble generation systems, the water outlet of Airfloat pump (11) is communicated with the water-in of pressure air-dissolving tank (1);
Two, pending water enters mixing zone (4) by the water-in (8) of air flotation pool body (A), the dissolved air water of supersaturation simultaneously produces the positive charge microbubble by reliever (5) and enters in mixing zone (4), mix with pending water, then enter disengaging zone (6), (6) surface forms stable scum layer in the disengaging zone, and wherein the residence time of pending water in air flotation pool body (A) is 10min ~ 40min;
Three, adopt scum collection system (C) layer that scums, clean water is collected by perforation header (7), completes the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect.
2. the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect according to claim 1, is characterized in that in step 1, microbubble positive charge improved chemical is metal coagulating agent, cats product, cationic polymers, chitosan or modified chitosan derivative.
3. the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect according to claim 2, is characterized in that the metal coagulating agent is the one or more combination in aluminum chloride, Tai-Ace S 150, ferrous sulfate, ferric sulfate, iron(ic) chloride, poly-ferric chloride, polymerize aluminum chloride and polyaluminium sulfate.
4. the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect according to claim 2, is characterized in that cats product is the one or more combination in fatty amines cats product, quaternary cationics, ring-type cats product, aggretion type cats product, fluorine-containing quaternary cationics, siliceous quaternary cationics and amine oxide cats product.
5. the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect according to claim 2, is characterized in that cationic polymers is one or both combinations in polyamine cation polymkeric substance and polyquaternium cationoid polymkeric substance.
6. the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect according to claim 2 is characterized in that modified chitosan is the chitosan derivatives after acidylate, amination, etherificate, esterification, grafting, crosslinked or blending reaction modification.
7. the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect according to claim 6, when it is characterized in that in step 1, if microbubble generation systems (B) is for pressure air-dissolving microbubble generation systems, microbubble positive charge improved chemical adopt pressure air-dissolving tank (1) directly to add or tank before add, when if microbubble generation systems (B) is Airfloat pump microbubble generation systems, microbubble positive charge improved chemical adds before adopting pump.
8. the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect according to claim 7, is characterized in that in step 1, the water in the supersaturation dissolved air water is pure water or floating rear water.
9. the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect according to claim 8, is characterized in that in step 1, the source of the gas in the supersaturation dissolved air water is air, oxygen, hydrogen, ozone or nitrogen.
10. the method for utilizing the microbubble modification technology to strengthen the air-float technology separating effect according to claim 9, is characterized in that reliever in step 1 (5) is micropore template reliever, reducing valve type reliever, TV type reliever or TJ type reliever.
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| CN103288160A (en) * | 2013-06-14 | 2013-09-11 | 哈尔滨工业大学 | Device for removing algae in eutrophicated water body by mobile floatation platform and application method thereof |
| CN104310558A (en) * | 2014-09-25 | 2015-01-28 | 青岛佰众化工技术有限公司 | Industrial wastewater flocculating agent |
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| CN104787828A (en) * | 2015-05-08 | 2015-07-22 | 哈尔滨工业大学 | Water treatment method for removing pollution through singlet oxygen dissolved air flotation |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792831A (en) * | 2005-12-05 | 2006-06-28 | 西安交通大学 | Process and apparatus for oil eliminating by pressure dissolved air floatation with nitrogen as gaseous source |
| CN2920975Y (en) * | 2006-07-05 | 2007-07-11 | 台东蛟 | Cavitation air-float machine |
| CN202054680U (en) * | 2011-05-11 | 2011-11-30 | 无锡奔月环保设备有限公司 | Sedimentation and bubble floatation integrated water treatment equipment |
| CN102863058A (en) * | 2011-07-08 | 2013-01-09 | 蓝星环境工程有限公司 | Air-floatation water treatment system |
-
2013
- 2013-03-01 CN CN2013100658308A patent/CN103086456A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792831A (en) * | 2005-12-05 | 2006-06-28 | 西安交通大学 | Process and apparatus for oil eliminating by pressure dissolved air floatation with nitrogen as gaseous source |
| CN2920975Y (en) * | 2006-07-05 | 2007-07-11 | 台东蛟 | Cavitation air-float machine |
| CN202054680U (en) * | 2011-05-11 | 2011-11-30 | 无锡奔月环保设备有限公司 | Sedimentation and bubble floatation integrated water treatment equipment |
| CN102863058A (en) * | 2011-07-08 | 2013-01-09 | 蓝星环境工程有限公司 | Air-floatation water treatment system |
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| CN103288160B (en) * | 2013-06-14 | 2014-04-23 | 哈尔滨工业大学 | Device for removing algae in eutrophicated water body by mobile floatation platform and application method thereof |
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| CN107287122B (en) * | 2017-05-22 | 2020-08-21 | 清华大学 | Alga concentration harvesting method based on polymer-surfactant binary micro-nano structure |
| CN107287122A (en) * | 2017-05-22 | 2017-10-24 | 清华大学 | Algae concentration harvesting method based on polymeric surfactant binary micro nano structure |
| 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 |
| CN110127794A (en) * | 2019-04-23 | 2019-08-16 | 浙江工业大学 | Method for rapidly and in-situ targeted eradication of cyanobacterial bloom by capturing algae micro-bubbles |
| CN110194510A (en) * | 2019-05-27 | 2019-09-03 | 江苏大学 | A kind of novel air floating device based on the static reinforced phase dispersion of multi-pore channel |
| CN111333170A (en) * | 2020-03-20 | 2020-06-26 | 同济大学 | Method for synchronously removing disinfection by-products and micropollutants in water |
| CN111285506A (en) * | 2020-03-30 | 2020-06-16 | 无锡市政设计研究院有限公司 | Pretreatment system and pretreatment method for wastewater membrane treatment process |
| CN112642591A (en) * | 2020-12-29 | 2021-04-13 | 武汉科技大学 | Method for improving floatation recovery rate of kaolinite by using modified nano bubbles |
| CN113087317A (en) * | 2021-05-19 | 2021-07-09 | 上海金相环境科技有限公司 | Method for treating culture tail water by adopting nano-micron gas-liquid interface technology |
| CN113521867A (en) * | 2021-07-27 | 2021-10-22 | 南京科赫科技有限公司 | Continuous catalytic cracking slurry oil purification device and process |
| CN113582283A (en) * | 2021-08-04 | 2021-11-02 | 山东建筑大学 | Micro-nano bubble surface function modifier and air floatation-enhanced water purification method thereof |
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| CN113621092B (en) * | 2021-08-04 | 2022-11-25 | 山东建筑大学 | Microbubble surface function modifier and preparation method thereof |
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