CN103848534A - Oily sewage ultrasonic magneto-electric flocculation suspension filtering purifying process - Google Patents
Oily sewage ultrasonic magneto-electric flocculation suspension filtering purifying process Download PDFInfo
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Abstract
The invention relates to an oily sewage ultrasonic magneto-electric flocculation suspension filtering purifying process, and is an oily sewage medication-free purifying treatment process in combination of ultrasonic, a tubular magneto-electric flocculator and an air flotation suspended sludge filtering. The flocculation treatment is firstly performed on the oily sewage through the tubular magneto-electric flocculator, the ultrasonic device is acted on the magneto-electric flocculator, and then then treated oily sewage enters the suspended sludge filtering device, the purified water is extracted by using a lifting pump through a buffer tank. The ultrasonic, the magnetic treatment, the electric flocculation, the sterilization, the air flotation and the suspended sludge filtering are combined to prevent the electrode from scaling and passivating and prevent the device from scaling, the process is fast in filter layer formation, strong in adaptability, flexible and stable in operation, free from chemical agent in whole process, and suitable for various suspension-containing sewage treatment, and especially suitable for the oily sewage treatment.
Description
Technical field
The present invention relates to a kind of oil-containing sewage treatment technique, relate in particular to the ultrasonic magnetoelectricity flocculated suspension of a kind of oily(waste)water filtration, purification technique.
Background technology
The treatment process of oily(waste)water all adopts Physical and chemical method combination treatment mode.More perfect Physical purification process at least comprises oily water separation and filtration, and oily-water seperating equipment adopts natural subsidence combination waste-oil scavenger, and filtration unit adopts nut-shell, quartz sand and glaukonine strainer.In order to guarantee that sewage disposal can reach standard, in treating processes, need to add a large amount of demulsifying flocculant, water purification agent, Scale inhibitors, inhibiter and sterilant efficiently, cause the problems such as working cost sludge quantity high, that generate increases, oil in water emulsion increases, environment and human body are also existed to certain pollution and injury.
Along with the development of tertiary oil recovery technology, these existing treatment process are in use found to exist following problem: due to ternary drive recover the oil cause Oil in Sewage Water bead footpath significantly to reduce, the existence of surfactant has simultaneously aggravated oil-water emulsion degree, the sedimenting system poor processing effect that makes to realize by gravity oily water separation, causes oil removal efficiency greatly to reduce; Ternary is driven oil recovery technique and is caused polymer content in sewage to increase, water viscosity strengthens, and causes greasy dirt and filtrate bonding force to increase, for lightweight shell filtrate, its relative density further reduces, easily cause back flushing filtrate to expand too high, build the pressure, run material problem serious, and for heavy filtrate, in filtration procedure, be easy to form on filtrate top layer the gluey hardening layer of one deck, be difficult for fragmentation, cause backwash effect to decline, be difficult to realize the thorough regeneration of filtrate; Added amount of chemical is large, and running cost is high.
CN101716438A discloses a kind of integrated continuous flow oil-containing waste water processing device, device is by separating tank, media regeneration tank, lift pump, filtrate recycle pump be connected manifold composition, separating tank is vertical circular tank, in tank body, it is telescoping structure, filtrate and filter core are housed in sleeve, adopt reverse flow reverse filtration, and be furnished with the outer continuous circulation eddy current of separating tank and wash facility by rubbing with the hands, effectively prevent the generation of blocking pipeline and holddown phenomenon in filtrate circulation, filter core adopts the regeneration of air-blowing de-plugging in turn of dividing into groups, guarantee the normal operation continuously of integrated continuous flow oil-containing waste water processing device and process rear water quality qualified stable, install safe and reliable to operationly, effect is qualified stable, Continuous Flow filtration, purification processing that can widespread use oily(waste)water, and oil, mud, the water that can also be used for high moisture block oilfield production fluid separate.But this device media regeneration complexity.
CN1477069A disclose a kind of collect after vortex puddle, em polarization, sedimentation filter, oily(waste)water Continuous Flow not dosing purifying treatment method and not dosing of monoblock type oily(waste)water Continuous Flow refining plant that filtrate continuous circulation cleaning and regeneration is integrated in one, its step is that first vortex puddle separates oil removing and the antibacterial polarization processing of electromagnetism scale inhibitor, after carry out sedimentation and Continuous Flow filtration, purification, in processing, carry out continuous circulation cleaning and regeneration to receiving dirty filtrate; Compared with prior art, the method and apparatus that this invention provides is that Continuous Flow, not dosing, technique are simple, equipment used volume is little, strong adaptability, effective, working cost is low, can widespread use oily water treatment.This device needs continuous filtration, media regeneration complicated operation.
CN1458074A discloses Produced in Polymer Flooding sink drainage treatment process.Mainly solved existing Produced in Polymer Flooding sewage treatment process processing efficiency low, invest large problem.This technical scheme also exists filtrate to process problem.
CN1854093A discloses oil-containing sewage treatment technique and treatment facility.The oil-containing sewage treatment technique of this invention is a kind of advanced treatment process that adopts air supporting to be combined to oily(waste)water with membrane technique, first adopt dissolved air flotation process to dispose of sewage, the product water obtaining adopts ultrafiltration membrane treatment system and reverse osmosis treatment system to carry out deep purifying again; Wherein, while adopting air supporting to process, make the sewage that has added in advance flocculation agent enter air flotation pool from the top of air flotation pool, and the microbubble of pressure air-dissolving water generates is to enter air flotation pool from air flotation pool bottom, makes treatment sewage and dissolved air water in air flotation pool, form counter current contact.This technical scheme relates to high-efficiency dissolued-air air-floating apparatus and the film integrated sewage treatment facility of realizing this technique simultaneously, but has membrane pollution problem.
Summary of the invention
The problem existing for solving prior art, the invention provides the technique that a kind of ultrasonic wave, magnetoelectricity flocculator and air supporting suspended sludge filtration unit combine, and this technique, without dosing, does not exist media regeneration and device scale problems.
For reaching this object, the present invention by the following technical solutions:
The ultrasonic magnetoelectricity flocculated suspension of a kind of oily(waste)water filtration, purification technique, described technique is processed oily(waste)water successively in tubular type magnetoelectricity flocculator and suspended sludge filtration unit;
Described tubular type magnetoelectricity flocculator comprises flanged (FLGD) metal section; In described flanged (FLGD) metal section, electrode is set, described electrode is fixed on flanged (FLGD) metal section top by insulating suspension; Described electrode is connected with supply transformer by electrode bar; Described flanged (FLGD) metal section ground connection; The outer toroidal magnet that is arranged with of described electrode;
Described tubular type magnetoelectricity flocculator two ends are separately installed with ultrasonic probe;
Described suspended sludge filtration unit comprises mixing wastewater with air district, back taper flocculation zone, suspended layer filtrating area, flco blocker and coalescent district from bottom to up successively; In described suspended layer filtrating area, be provided with multiple overflow settling vessels.
In operational process, oily(waste)water is introduced into two ends and is equipped with after the tubular type magnetoelectricity flocculator of ultrasonic probe is processed and enters suspended sludge filtration unit, purifying waste water through arranging or reuse lift pump outside for surge tank after suspended sludge filters.
Tubular type magnetoelectricity flocculator of the present invention in magnetic field, the flocculation of ultrasonic middle added electric field, performance three's synergy, strengthens electric flocculating effect, alleviates electrode fouling and passivation.
Described suspended sludge filtration unit by flocculation, air supporting, oxidation, suspended layer filter, coalescent, filter and be combined as a whole, be provided with flco intercept layer and multiple overflow settling vessel, processing efficiency is high, form that filtering layer is fast, strong adaptability, flexible operation are stable, be suitable for the various suspended substance sewage disposals that contain, be especially suitable for existing similar technology and be difficult to the high salinity adapting to, the suspension filter of high-density oily(waste)water.
The first form of the electrode in described tubular type magnetoelectricity flocculator is: the central metal electrode that is arranged at flanged (FLGD) metal section center.
The second form of the electrode in described tubular type magnetoelectricity flocculator is: comprise and be arranged at the central metal electrode at flanged (FLGD) metal section center and a ring electrode hurdle around central metal electrode; Described ring electrode is uniformly distributed multiple metal electrodes on hurdle; Between described central metal electrode and ring electrode hurdle, ring electrode hurdle and flanged (FLGD) metal section roof, be all connected by insulating suspension.
Preferably, described central metal electrode is connected with supply transformer by electrode bar respectively with ring electrode hurdle.
The third form of electrode in described tubular type magnetoelectricity flocculator is: comprise and be arranged at the central metal electrode at flanged (FLGD) metal section center and the multiple ring electrodes hurdle around central metal electrode; Described ring electrode is uniformly distributed multiple metal electrodes on hurdle; Between described central metal electrode and ring electrode hurdle, ring electrode hurdle and flanged (FLGD) metal section top and adjacent annular electrode column, be all connected by insulating suspension.
Between the roof of described central metal electrode, multiple ring electrodes hurdle and flanged (FLGD) metal section, connect by metal wire interlayer.Described interlayer connection refers to central metal electrode is connected with second layer ring electrode hurdle, the first layer ring electrode hurdle is connected with roof or the shellring shape electrode column of flanged (FLGD) metal section, the like (be from inside to outside defined as the first layer ring electrode hurdle, second layer ring electrode hurdle, shellring shape electrode column ...).
Preferably, between described central metal electrode and multiple ring electrodes hurdle, be connected with supply transformer by electrode bar with interlayer form.
Between central metal electrode and multiple electrode column interlayer connect, adjacent bed insulation, hang on pipeline section roof with insulating suspension, adjacent bed electrode is connected to two poles with electrode bar, reaction produces electrolysis between adjacent electrode; The toroidal magnet of installing in pipe or outside pipe produces magnetic field, act on whole pipeline section, the action of a magnetic field is in polar molecule, under the action of a magnetic field, its dipole aligns towards field direction, non-polar molecule can be induced into polar molecule, and formation aligns, and plays the effect of scale inhibition, sterilization, enhanced flocculation absorption.
Described central metal electrode is aluminum pipe or iron pipe, its surface uniform distribution multilayer aluminum net, iron net, aluminium grid or reja.
On described ring electrode hurdle, equally distributed multiple metal electrodes are multilayer aluminum net, iron net, aluminium grid or reja, to increase electrode area.
Ring electrode of the present invention hurdle, as the support frame of metal electrode, plays a supportive role.
Described toroidal magnet is positioned at the outside or inner of flanged (FLGD) metal section.Toroidal magnet, around pipeline section, can be distributed on whole pipeline section, can also can use electromagnetism with permanent magnetism.
Described toroidal magnet is preferably annular unipolar magnets.Unipolar magnets breaks through traditional positive and negative electrode the restriction of depositing, and positive and negative electrode is separated and magnetic line of force is concentrated and acted on respectively fluid, and antiscale, to suppress passivation, short flocculation, germicidal action stronger.
Described supply transformer is pulse transformer, high-frequency pulse transformer or umformer.
Described suspended sludge filtration unit also comprises the mud concentration zones that is positioned at bottom.The mud settling down in described overflow settling vessel enters mud concentration zones, regularly discharges.
Described suspended sludge filtration unit also comprises the filtrating area that is positioned at bottom.In filtrating area, strainer is set, can guarantees that stable water outlet is up to standard.Water after purification from water outlet flows out after, if below standard, can enter strainer, by residual suspended substance and oily Filtration Adsorption, absorption when afterwards water outlet is defective, is enabled back-washing valve, by Filter Back Washing processing.
Between described flco blocker and coalescent district, it is settling section.Top, described coalescent district is also provided with clear water zone and oil slick district.The present invention can, by water leg being set in clear water zone, make stable water outlet; At oil slick, district arranges oil trap, makes fuel-displaced stable.
Described mixing wastewater with air is provided with gas-water mixer in district.Described gas-water mixer is made up of filler or traverse baffle.In gas-water mixer, because of stirring and the changing flow direction of gas, cause stronger turbulent fluctuation, medicament (flocculation agent, coagulant aids and sterilant etc.) is mixed with contaminant particle, water, gas three-phase, at this moment the suspended substance in sewage is in the flocculation stage in early stage, and turbulent fluctuation is little on the impact of flocculation.Due to the effect of ascending gas, can accelerate coalescence and the lift velocity of flco, thereby accelerate the formation of suspended layer.Gas-water mixer effect is that medicament is fully mixed with sewage, the floating thereby acceleration flco is grown up.
In described gas-water mixer, pass into pressurized air, nitrogen or ozone.If what gas was used is air or ozone, can also play oxygenizement, the organism in sewage is degraded, thereby COD is reduced.
Described suspended layer filtrating area is uniform overflow settling vessel centered by device medullary ray.Equally distributed overflow settling vessel is the stable and balance in order to keep suspended layer.Form after suspended layer, part flco can continue to rise, while arriving flco blocker, can be blocked, further expand suspended layer, along with the continuous rising of flco, suspended layer constantly thickens, while arriving overflow settling vessel entrance, suspended layer can fall into suspended layer settling vessel, because the density of suspended layer flco is larger, at the bottom of can further sinking to tank, thereby reach running balance.While arriving suspended layer containing suspended substance oily(waste)water flco after dosing, the large impurity such as suspensoid particle, flco can be tackled by suspended layer absorption, and water can see through suspended layer, thereby realizes filteration.
Because suspended sludge layer is made up of flco, density is high, filtration efficiency is filtered higher than conventional sand grains layer far away, the resistance of its filtration is very little, so energy consumption is well below conventional sand filtration, micro-filtration or reverse osmosis membrane filtration, suspended layer is from constantly upgrading, and can not carry out supplementing of backwashing procedures that general filtration must carry out and filtrate.
Described flco blocker is made up of catch net or packing layer.Described catch net is made up of metal or nonmetal net; Described packing layer is made up of gac or plastics.Flco blocker is for tackling flco, the oil droplet of crossing suspended layer.Because gas density is little, the gas entering by gas-water mixer can see through flco blocker automatically, reduces the obstruction of flco blocker simultaneously.
Described flco blocker is packed up or is opened by the mechanism at device top.When flco density is less, suspended layer filter effect is bad or do not form suspended layer in setting regions, and top has scum silica frost to occur, goes out water suspension content time not up to standard, flco blocker can be opened, will be through the flco interception of suspended layer.
Between described flocculation blocker and overflow settling vessel, suspended layer waste pipe is set.When the salinity because of sewage is high, density is while causing greatly suspended layer not sink, can discharge by suspended layer waste pipe.The top of described flocculation blocker is provided with backwash tube.When flco intercept layer reaches certain thickness, affect water see through time, can enable backwash tube, discharge by suspended layer waste pipe simultaneously.
In described coalescent district, being provided with coalescer, is in order to collect the oil droplet through suspended layer.Described coalescer is oleophylic coalescent pack or coalescing-plate.While arriving coalescent pack layer through the oil droplet of suspended layer, because the lipophilicity oil droplet of filler is adsorbed the coalescence of growing up, the oil droplet of growing up while reaching balance can float and form oil reservoir and discharge through oil exit pipe.
Compared with prior art scheme, the present invention has following beneficial effect:
Without dosing, there is not media regeneration and device scale problems in technique of the present invention.
In tubular type magnetoelectricity flocculator of the present invention, magnetic field and ultrasonic existence have suppressed electrode passivation, make to process rear air supporting and have shortened the residence time, have alleviated the fouling of follow-up suspended sludge filtration unit.
Under ultrasonication, the reaction product of electrode surface can be removed in time, thereby alleviates passivation, accelerates the carrying out of electrochemical reaction, has also accelerated flocculation reaction speed, and flocculation efficiency is provided, and produces flocculation agent simultaneously, has improved electric flocculating effect.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention;
Fig. 2 is the structural representation of suspended sludge filtration unit;
Fig. 3 is the structural representation of tubular type magnetoelectricity flocculator;
Fig. 4 is the left view of Fig. 3.
In Fig. 1:
1-1-tubular type magnetoelectricity flocculator; 1-2-suspended sludge filtration unit; 1-3-surge tank; 1-4-lift pump; 1-5-ultrasonic probe;
In Fig. 2:
2-1-mixing wastewater with air district; 2-2-mud concentration zones; 2-3-filtrating area; 2-4-suspended layer filtrating area; 2-5-back taper flocculation zone; 2-6-settling section; The coalescent district of 2-7-; 2-8-clear water zone; 2-9-oil slick district;
In Fig. 3:
3-1-ring electrode hurdle; The flanged (FLGD) metal section of 3-2-; 3-3-electric connector; 3-4-electrode bar; 3-5-central metal electrode; 3-6-insulating suspension; 3-7-flange; 3-8-toroidal magnet.
The present invention is described in more detail below.But following example is only simple and easy example of the present invention, does not represent or limit the scope of the present invention, and protection scope of the present invention is as the criterion with claims.
Embodiment
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by embodiment.
For the present invention is described better, be convenient to understand technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:
As shown in Figure 1, first oily(waste)water enters tubular type magnetoelectricity flocculator 1-1, on its two ends pipeline, ultrasonic probe 1-5 is installed, and in tubular type magnetoelectricity flocculator 1-1, carries out electric flocculation reaction, and this reaction is carried out under magnetic field and ultrasonic wave acting in conjunction.Sewage after electricity flocculation enters suspended sludge filtration unit 1-2, and purifying waste water after filtration enters surge tank 1-3, with lift pump 1-4 discharge.
As shown in Figure 2, described suspended sludge filtration unit comprises mixing wastewater with air district 2-1, back taper flocculation zone 2-5, suspended layer filtrating area 2-4, flco blocker, settling section 2-6, coalescent district 2-7, clear water zone 2-8 and oil slick district 2-9 from bottom to up successively; Described suspended layer filtrating area 2-4 is uniform multiple overflow settling vessels centered by device medullary ray.
Described device also comprise be positioned at bottom mud concentration zones 2-2, be positioned at bottom filtrating area 2-3.
In described mixing wastewater with air district 2-1, be provided with gas-water mixer; Described gas-water mixer is made up of filler or traverse baffle; In described gas-water mixer, pass into pressurized air, nitrogen or ozone.
Described back taper flocculation zone 2-5 is formed by reverse taper.
Described flco blocker is made up of catch net or packing layer.Described catch net is made up of metal or nonmetal net; Described packing layer is made up of gac or plastics.
Described flco blocker is packed up or is opened by the mechanism at device top.
Between described flocculation blocker and overflow settling vessel, suspended layer waste pipe is set.
The top of described flocculation blocker is provided with backwash tube.
In described coalescent district 2-7, be provided with coalescer; Described coalescer is oleophylic coalescent pack or coalescing-plate.
As shown in Figure 3, described tubular type magnetoelectricity flocculation water treating device comprises the metal section 3-2 of flanged 3-7; In the metal section 3-2 of described flanged 3-7, electrode is set, described electrode is fixed on the metal section 3-2 top of flanged 3-7 by insulating suspension 3-6; Described electrode is connected with supply transformer by electrode bar 3-3; The metal section 3-2 ground connection of described flanged 3-7; The outer toroidal magnet 3-8 that is arranged with of described electrode.
Described electrode comprises the central metal electrode 3-5 at the metal section 3-2 center that is arranged at flanged 3-7 and two ring electrode hurdle 3-1 around central metal electrode 3-5.Intermediate metal electrode 3-5 is fixed on internal layer annular electrode column by insulating suspension 3-6, and internal layer annular electrode column is fixed on outer annular electrode column by insulating suspension 3-6, and outer annular electrode column is fixed on pipeline section top by insulating suspension 3-6.Internal layer annular electrode column is connected by metal wire with pipeline section roof, central metal electrode 3-5 is connected by metal wire with outer annular electrode column, central metal electrode 3-5 and outer annular electrode column pass through electrode bar electrical connectors 3-3, then connect supply transformer.
Between adjacent metal electrode, form electric field, between outer electrode and pipeline section inwall, also form electric field.
On described ring electrode hurdle 3-1, be uniformly distributed multiple metal electrodes.
Described central metal electrode 3-5 is aluminum pipe or iron pipe, the one in its surface uniform distribution multilayer aluminum net, iron net, aluminium grid or reja.
The upper equally distributed multiple metal electrodes of described ring electrode hurdle 3-1 are the one in multilayer aluminum net, iron net, aluminium grid or reja.
Described supply transformer is pulse transformer, high-frequency pulse transformer or umformer.
Described tubular type magnetoelectricity flocculator two ends are separately installed with ultrasonic probe 1-5.
Electricity flocculation is a complicated physical chemistry and electrochemical process, generally, electric field action on electrode, the ion of generation or the electronics of release basic physical chemistry and electrochemical reaction below producing in the time entering water body:
1) oxidation: oxygenizement can be divided into direct oxidation and indirect oxidation, and direct oxidation is that pollutent directly loses electronics and is oxidized at anode; Indirect oxidation is the lower negatively charged ion of electrode potential utilizing in solution, and for example OH-, Cl-lose electronics at anode and generate new stronger oxygenant active substance as O
2, Cl
2deng, utilize these active substances to make pollutent lose electronics, play oxygenolysis, to reduce BOD, COD, the NH in stoste
3-N etc. have germicidal action simultaneously.
2) reduction: reductive action is also divided into direct-reduction and indirect reduction, and direct-reduction is that pollutent directly obtains electronics and reductive action occurs on negative electrode; Indirect reduction is that first the positively charged ion in pollutent obtains electronics at negative electrode, make in ionogen high price or at a low price metallic cation obtain electronics at negative electrode and be directly reduced to positively charged ion at a low price and generate the metal oxide or the precipitated metal that are easy to precipitation.
3) flocculation: soluble anode passes to after direct current, and anode loses electronics, forms metallic cation, generates the extremely strong metal hydroxides colloid flocculation agent of adsorptive power with the OH-in solution, and the pollution substance sorption-coprecipitation in waste water is removed.
Tubular structure can make liquid and anode and cathode between negative electrode, anode obtain the Surface Contact of abundant formula, electrochemical reaction is controlled in the space of a sealing, this makes hydrogen and the oxygen producing in reaction or chlorine can fully mix with liquid rather than processing limit, limit discharges, and magnetic field and ultrasonic existence have suppressed electrode passivation.
Under the action of a magnetic field, because the polarization of polarity and non-polar molecule aligns, the zwitterion in water is surrounded and is difficult for motion combination by water dipole respectively, thereby has suppressed the fouling of separating out of calcium ions and magnesium ions; Moving electron produces the lorentz's force vertical with direction of motion in magnetic field, makes electronics depart from normal lattice, suppresses the generation of solid crystal, has reduced electrode surface fouling.Aqueous polar under the action of a magnetic field strengthens, and the perviousness of incrustation scale is strengthened, and destroys the bonding force of incrustation scale and metallic surface, and dirt is come off, and has suppressed like this passivation of electrode.Under the action of a magnetic field, the electromotive force of aqueous systems declines, thereby chemical reaction velocity is accelerated; Group activity and the avidity enhancing to metallic surface, impel the generation of complex reaction; Electrostatic double layer attenuation, strengthening adsorption; Charged particle when the magnetic field, is subject to lorentz's force effect and produces orientation movement, thereby increases liquid perturbation reinforcing mass transfer, accelerates the agglomeration of particulate matter in water; Microorganism when the magnetic field, part activity inhibited and death, metabolism enhancing and the cleaning action of fortified water are partly activated.While is through the free effect of water of magnetic field treatment, the fouling that can alleviate follow up device.
Ultrasonic wave is done the used time to sewage, plays a role with form of energy, reduces process energy barrier, but also has cavatition.Ultrasonic wave exists with compressional wave form in water, compressional wave density interphase, within the part of rarefaction cycle, the intermolecular gravitation of liquid phase is broken, form cavitation nucleus, the vibration of complex, growth, contraction, collapse, produce shockwave and jet, make to have very the product of hyperoxia voltinism and enter solution and provide special conditions for chemical reaction, thereby improve organic degradation rate.Under ultrasonication, the reaction product of electrode surface can be removed in time, thereby alleviates passivation, accelerates the carrying out of electrochemical reaction, has also just accelerated flocculation reaction speed, and flocculation efficiency is provided, and produces flocculation agent simultaneously.
The present invention combines ultrasonic, magnetic field and electric field, has overcome the impact of electrode passivation, has improved electric flocculating effect.Through tubular type magnetoelectricity flocculator of the present invention water after treatment, wherein only carry out flocculation reaction and do not separate, after processing to downstream sedimentation or filtration unit, can arrive the object of purification.In actual application, can be according to the character of suspended substance in water and purification standard and treatment capacity, select many group serial or parallel connections.
Mix from entering mixing wastewater with air district together with gas inlet through the sewage of the oil-containing after electricity flocculation, flocculation agent that electricity flocculation produces, flco and gas (air, nitrogen or ozone), because of stirring and the changing flow direction of gas, cause stronger turbulent fluctuation, flco, flocculation agent that electricity flocculation is produced mix with contaminant particle, water, gas three-phase, at this moment the suspended substance in sewage is in the flocculation stage in early stage, and turbulent fluctuation is little on the impact of flocculation; Gas forms countless bubble nucleus by pollutent flco, and these nucleus are grown directly upon among flco, makes the rapid coalescence of tiny flco, and along with flocculation is constantly carried out, flco is increasing.
Mixture flow is in the time of back taper flocculation zone, and because section constantly expands, flow velocity progressively reduces, and flow start to be tending towards Slow and, in the process that the flco being shaped in flocculation constantly rises, part flco density is increasing, flow velocity is more and more less, finally reaches the balance that rises and decline, and forms suspended layer.Part flco can continue to rise, and while arriving flco blocker, can be blocked, and further expands suspended layer.Along with the continuous rising of flco, suspended layer constantly thickens, and while arriving overflow settling vessel entrance, suspended layer can fall into overflow settling vessel, and further sinkage equipment bottom, regularly discharges from mud discharging mouth, thereby reach running balance.While arriving suspended layer containing suspended substance oily(waste)water flco, the large impurity such as suspensoid particle, flco can be tackled by suspended layer absorption, and water can see through suspended layer, thereby realizes filteration.
While arriving coalescent district through the oil droplet of suspended layer, because the lipophilicity oil droplet of filler is adsorbed the coalescence of growing up, the oil droplet of growing up while the reaching balance formation oil reservoir that can float, concentrate in oil trap and discharge through oil export, water after purification concentrates in water leg and enter surge tank from clear water output flows out, and discharges or reuse through lift pump.If below standard, can, from the filtrating area of filter inlet access to plant bottom, will after residual suspended substance and oily Filtration Adsorption, enter surge tank from filter outlet.
The present invention filters ultrasonic, magnetic treatment, electric flocculation, sterilization, air supporting and suspended sludge to combine, there is the electrode of preventing fouling and passivation, holdout device fouling, formation filtering layer is fast, strong adaptability, flexible operation is stable, and whole process does not add chemical agent, be suitable for the various suspended substance sewage disposals that contain, be especially suitable for the processing of oily(waste)water.
One group of processing parameter of the present invention is:
Tubular type magnetoelectricity flocculator voltage is 20-36V, electric current 10-50A; Magneticstrength 0.1-3T; Ultrasonic power 100-1000W, frequency 20-200kHz; Gas-water ratio (volume): 1-50.
Specific embodiment
Oil-containing 300mg/l, suspended substance 250mg/l, salinity 5000mg/l, 15 tons/hour, the oily(waste)water of pH value 8, voltage 30V, electric current 20A, magneticstrength 0.2T, ultrasonic power 100W, frequency 50kHz, gas-water ratio 10,0.5 hour suspension filter time, after this art breading, average oil-containing is less than 5mg/l, and suspended substance is less than 3mg/l.
Applicant's statement, the present invention illustrates detailed construction feature of the present invention and method by above-described embodiment, but the present invention is not limited to above-mentioned detailed construction feature and method, do not mean that the present invention must rely on above-mentioned detailed construction feature and method could be implemented.Person of ordinary skill in the field should understand, any improvement in the present invention, and the selections of the equivalence replacement to the selected parts of the present invention and the increase of accessory, concrete mode etc., within all dropping on protection scope of the present invention and open scope.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, also can carry out arbitrary combination between various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (8)
1. the ultrasonic magnetoelectricity flocculated suspension of an oily(waste)water filtration, purification technique, is characterized in that, described technique is processed oily(waste)water successively in tubular type magnetoelectricity flocculator and suspended sludge filtration unit;
Described tubular type magnetoelectricity flocculator comprises flanged (FLGD) metal section; In described flanged (FLGD) metal section, electrode is set, described electrode is fixed on flanged (FLGD) metal section top by insulating suspension; Described electrode is connected with supply transformer by electrode bar; Described flanged (FLGD) metal section ground connection; The outer toroidal magnet that is arranged with of described electrode;
Described tubular type magnetoelectricity flocculator two ends are separately installed with ultrasonic probe;
Described suspended sludge filtration unit comprises mixing wastewater with air district, back taper flocculation zone, suspended layer filtrating area, flco blocker and coalescent district from bottom to up successively; In described suspended layer filtrating area, be provided with multiple overflow settling vessels.
2. technique as claimed in claim 1, is characterized in that, the electrode in described tubular type magnetoelectricity flocculator is the central metal electrode that is arranged at flanged (FLGD) metal section center.
3. technique as claimed in claim 1, is characterized in that, the electrode in described tubular type magnetoelectricity flocculator comprises and is arranged at the central metal electrode at flanged (FLGD) metal section center and a ring electrode hurdle around central metal electrode; Described ring electrode is uniformly distributed multiple metal electrodes on hurdle; Between described central metal electrode and ring electrode hurdle, ring electrode hurdle and flanged (FLGD) metal section roof, be all connected by insulating suspension;
Preferably, described central metal electrode is connected with supply transformer by electrode bar respectively with ring electrode hurdle.
4. technique as claimed in claim 1, is characterized in that, the electrode in described tubular type magnetoelectricity flocculator comprises and is arranged at the central metal electrode at flanged (FLGD) metal section center and the multiple ring electrodes hurdle around central metal electrode; Described ring electrode is uniformly distributed multiple metal electrodes on hurdle; Between described central metal electrode and ring electrode hurdle, ring electrode hurdle and flanged (FLGD) metal section top and adjacent annular electrode column, be all connected by insulating suspension;
Between the roof of described central metal electrode, multiple ring electrodes hurdle and flanged (FLGD) metal section, connect by metal wire interlayer;
Preferably, between described central metal electrode and multiple ring electrodes hurdle, be connected with supply transformer by electrode bar with interlayer form.
5. the technique as described in one of claim 2-4, is characterized in that, described central metal electrode is aluminum pipe or iron pipe, its surface uniform distribution multilayer aluminum net, iron net, aluminium grid or reja;
Preferably, on described ring electrode hurdle, equally distributed multiple metal electrodes are multilayer aluminum net, iron net, aluminium grid or reja;
Preferably, described toroidal magnet is annular unipolar magnets.
6. technique as claimed in claim 1, is characterized in that, described suspended sludge filtration unit also comprises the mud concentration zones that is positioned at bottom;
Preferably, also comprise the filtrating area that is positioned at bottom;
Preferably, between described flco blocker and coalescent district, be settling section;
Preferably, top, described coalescent district is also provided with clear water zone and oil slick district.
7. the technique as described in one of claim 1-6, is characterized in that, described mixing wastewater with air is provided with gas-water mixer in district;
Preferably, described suspended layer filtrating area uniform overflow settling vessel centered by device medullary ray;
Preferably, described flco blocker is made up of catch net or packing layer.
8. technique as claimed in claim 7, is characterized in that, between described flocculation blocker and overflow settling vessel, suspended layer waste pipe is set;
Preferably, the top of described flocculation blocker is provided with backwash tube.
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| CN109320018A (en) * | 2016-07-27 | 2019-02-12 | 杭州绿环保技术有限公司 | A kind of processing method of industrial wastewater |
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| CN106517470A (en) * | 2016-12-26 | 2017-03-22 | 兰州交通大学 | Hydraulic double-suspension-layer fluidized bed for water treatment |
| CN106517470B (en) * | 2016-12-26 | 2023-09-22 | 兰州交通大学 | Hydraulic double-suspension-layer fluidized bed for water treatment |
| CN107176775A (en) * | 2017-05-05 | 2017-09-19 | 郑旭东 | A kind of technological process for purifying oily sludge |
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| RU2751394C1 (en) * | 2020-10-28 | 2021-07-13 | Общество с ограниченной ответственностью "Сибводразработка и С" | Method for electrocoagulation purification of drinking and waste water |
| RU2769109C1 (en) * | 2021-08-25 | 2022-03-28 | Юрий Олегович Бобылёв | Method for hydrodynamic water purification and device for hydrodynamic water purification |
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Address after: 100029 Beijing city Chaoyang District Xiaoguan Beili 45 Jiayuan century No. 5 Building 7 layer Patentee after: Bi Haizhou (Beijing) energy saving environmental protection equipment Co., Ltd. Address before: 100029 Beijing city Chaoyang District Xiaoguan Beili 45 Jiayuan century No. 5 Building 7 layer Patentee before: Bihaizhou (Beijing) Petrochemical Equipment Co., Ltd. |
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