CN103848534B - Oily(waste)water ultrasonic magnetoelectricity flocculated suspension filtration, purification technique - Google Patents
Oily(waste)water ultrasonic magnetoelectricity flocculated suspension filtration, purification technique Download PDFInfo
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Abstract
The present invention relates to a kind of oily(waste)water ultrasonic magnetoelectricity flocculated suspension filtration, purification technique.The present invention is ultrasonic wave, tubular type magnetoelectricity flocculator and air supporting suspended sludge filter the oily(waste)water not dosing purification process technique combined.Oily(waste)water first carries out flocculation treatment through tubular type magnetoelectricity flocculator, and ultrasonic unit acts on magnetoelectricity flocculator, then enters suspended sludge filtration unit, will to purify waste water withdrawing device through surge tank lift pump.Ultrasonic, magnetic treatment, electricity flocculation, sterilization, air supporting and suspended sludge filter and combine by the present invention, electrode fouling and passivation can be prevented, holdout device fouling, formation filtering layer is fast, strong adaptability, flexible operation is stablized, and whole process does not add chemical agent, be suitable for various containing suspended substance sewage disposal, be especially suitable for the process of oily(waste)water.
Description
Technical field
The present invention relates to a kind of oil-containing sewage treatment technique, particularly relate to a kind of oily(waste)water ultrasonic magnetoelectricity flocculated suspension 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 ensure that sewage disposal can reach standard, need in treating processes to add a large amount of demulsifying flocculant, water purification agent, Scale inhibitors, inhibiter and sterilant efficiently, cause the problems such as sludge quantity increases, oil in water emulsion increases that working cost is high, generate, certain pollution and injury are also existed to environment and human body.
Along with the development of tertiary oil recovery technology, these existing treatment process are in use found to there is following problem: drive oil recovery due to ternary and cause Oil in Sewage Water bead footpath significantly to reduce, the existence of surfactant simultaneously exacerbates oil-water emulsion degree, make the sedimenting system poor processing effect realizing oily water separation by gravity, cause 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 reduces further, easily cause back flushing filtrate to expand too high, build the pressure, run material problem seriously, and for heavy filter material, be easy in filtration procedure form the gluey hardening layer of one deck on filtrate top layer, not easily broken, cause backwash effect to decline, be difficult to the thorough regeneration realizing 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, be telescoping structure in tank body, sleeve is built with filtrate and filter core, adopt reverse flow reverse filtration, and continuous circulation eddy current washes facility by rubbing with the hands outside being furnished with separating tank, the generation of blocking pipeline and holddown phenomenon in effectively preventing filtrate from circulating, filter core adopts the regeneration of air-blowing de-plugging in turn of dividing into groups, guarantee that normal continuously operation and the rear water quality of process of integrated continuous flow oil-containing waste water processing device are qualified stable, plant running is safe and reliable, and effect is qualified stable, the Continuous Flow of widespread use oily(waste)water can filter purifying treatment, can also be used for the oil of High water cut block oilfield production fluid, mud, water is separated.But this device media regeneration is complicated.
CN1477069A disclose a kind of collect vortex puddle, em polarization, sedimentation after filter, the oily(waste)water Continuous Flow not dosing purifying treatment method that is integrated in one of filtrate continuous circulation cleaning and regeneration and monoblock type oily(waste)water Continuous Flow not dosing refining plant, its step is that first vortex puddle is separated oil removing and the antibacterial polarization process of electromagnetism scale inhibitor, after carry out sedimentation and Continuous Flow filtration, purification, while process, carry out continuous circulation cleaning and regeneration to receiving dirty filtrate; Compared with prior art, the method and apparatus that this invention provides is Continuous Flow, not dosing, technique is 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 solve existing Produced in Polymer Flooding sewage treatment process processing efficiency low, invest large problem.Also there is filtrate process problem in this technical scheme.
CN1854093A discloses oil-containing sewage treatment technique and treatment facility.The oil-containing sewage treatment technique of this invention a kind ofly adopts air supporting to be combined advanced treatment process to oily(waste)water with membrane technique, first adopt dissolved air flotation process to dispose of sewage, the product water obtained adopts ultrafiltration membrane treatment system and reverse osmosis treatment system to carry out deep purifying again; Wherein, when adopting air-flotation process, make the sewage that with the addition of flocculation agent in advance enter air flotation pool from the top of air flotation pool, and the microbubble that pressure air-dissolving water produces enters air flotation pool, makes treatment sewage and dissolved air water form counter current contact in air flotation pool.This technical scheme relates to the high-efficiency dissolued-air air-floating apparatus and film integrated sewage treatment facility that realize this technique simultaneously, but there is membrane pollution problem.
Summary of the invention
For solving prior art Problems existing, the invention provides the technique that a kind of ultrasonic wave, magnetoelectricity flocculator and air supporting suspended sludge filtration unit combine, without dosing, there is not media regeneration and device scale problems in this technique.
For reaching this object, the present invention by the following technical solutions:
A kind of oily(waste)water ultrasonic magnetoelectricity flocculated suspension filtration, purification technique, oily(waste)water processes by described technique successively in tubular type magnetoelectricity flocculator and suspended sludge filtration unit;
Described tubular type magnetoelectricity flocculator comprises flanged (FLGD) metal section; Arrange electrode in described flanged (FLGD) metal section, 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 of described electrode is arranged with toroidal magnet;
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; Multiple overflow settling vessel is provided with in described suspended layer filtrating area.
In operational process, oily(waste)water is introduced into after tubular type magnetoelectricity flocculator ultrasonic probe being housed two ends processes and enters suspended sludge filtration unit, and purifying waste water after suspended sludge filters is arranged outward or reuse through surge tank lift pump.
Tubular type magnetoelectricity flocculator of the present invention in magnetic field, the flocculation of ultrasonic middle added electric field, play the synergy of three, strengthen electric flocculating effect, alleviate electrode fouling and passivation.
Described suspended sludge filtration unit by flocculation, air supporting, oxidation, suspended layer filter, coalescent, filter be combined as a whole, be provided with flco intercept layer and multiple overflow settling vessel, processing efficiency is high, formation filtering layer is fast, strong adaptability, flexible operation are stable, be suitable for various containing suspended substance sewage disposal, be especially suitable for existing similar technique and be difficult to the high salinity of adaptation, the suspension filter of high-density oily(waste)water.
The first form of electrode in described tubular type magnetoelectricity flocculator is: the Center metal electrode being arranged at flanged (FLGD) metal section center.
The second form of the electrode in described tubular type magnetoelectricity flocculator is: comprise the Center metal electrode that is arranged at flanged (FLGD) metal section center and a ring electrode hurdle around Center metal electrode; Described ring electrode hurdle is uniformly distributed multiple metal electrode; Described Center metal electrode is with ring electrode hurdle, be all connected by insulating suspension between ring electrode hurdle with flanged (FLGD) metal section roof.
Preferably, described Center metal electrode is connected with supply transformer respectively by electrode bar with ring electrode hurdle.
The third form of electrode in described tubular type magnetoelectricity flocculator is: comprise the Center metal electrode that is arranged at flanged (FLGD) metal section center and the multiple ring electrode hurdles around Center metal electrode; Described ring electrode hurdle is uniformly distributed multiple metal electrode; Described Center metal electrode is all connected by insulating suspension with between flanged (FLGD) metal section top and adjacent annular electrode column with ring electrode hurdle, ring electrode hurdle.
Connected by metal wire interlayer between the roof of described Center metal electrode, multiple ring electrode hurdle and flanged (FLGD) metal section.Described interlayer connection refers to and is connected with second layer ring electrode hurdle by Center metal electrode, roof or the third layer ring electrode hurdle of the first layer ring electrode hurdle and flanged (FLGD) metal section are connected, the like (be from inside to outside defined as the first layer ring electrode hurdle, second layer ring electrode hurdle, third layer ring electrode hurdle ...).
Preferably, be connected with supply transformer by electrode bar with interlayer form between described Center metal electrode and multiple ring electrode hurdle.
The wall of Center metal electrode and multiple electrode column connects, adjacent bed insulation, and hang on pipeline section roof with insulating suspension, with electrode bar by adjacent bed Electrode connection two poles, produce electrolysis between adjacent electrode reaction; The toroidal magnet installed 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 polarity molecule, and formation aligns, and plays the effect of scale inhibition, sterilization, enhanced flocculation absorption.
Described Center metal electrode is aluminum pipe or iron pipe, its surface uniform distributed multilevel aluminium net, iron net, aluminium grid or reja.
On described ring electrode hurdle, equally distributed multiple metal electrode is multilayer aluminum net, iron net, aluminium grid or reja, to increase electrode area.
Ring electrode hurdle of the present invention, as the support frame of metal electrode, plays a supportive role.
Described toroidal magnet is positioned at the outside or inside of flanged (FLGD) metal section.Toroidal magnet, around pipeline section, can be distributed on whole pipeline section, can with permanent magnetism also electromagnetic.
Described toroidal magnet is preferably circular monopole magnet.Unipolar magnets breaks through traditional positive and negative electrode and the restriction of depositing, and is separated by positive and negative electrode and magnetic line of force is concentrated and acted on fluid respectively, antiscale, suppresses 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 being positioned at bottom.The mud settled down in described overflow settling vessel enters mud concentration zones, regularly discharges.
Described suspended sludge filtration unit also comprises the filtrating area being positioned at bottom.Strainer is set in filtrating area, can ensures that stable water outlet is up to standard.After after water after purification flows out from water outlet, if below standard, can strainer be entered, by residual suspended substance and oily Filtration Adsorption, when water outlet is defective after absorption, enable back-washing valve, by Filter Back Washing process.
Be settling section between described flco blocker and coalescent district.Clear water zone and oil slick district is also provided with above described coalescent district.The present invention, by arranging water leg in clear water zone, makes stable water outlet; At oil slick, district arranges oil trap, makes fuel-displaced stable.
Gas-water mixer is provided with in described mixing wastewater with air 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 flocculated stage in early stage, and the impact of turbulent fluctuation on flocculation is little.Due to the effect of ascending gas, coalescence and the lift velocity of flco can be accelerated, thus accelerate the formation of suspended layer.Gas-water mixer effect is that medicament is fully mixed with sewage, the floating thus acceleration flco is grown up.
Pressurized air, nitrogen or ozone is passed in described gas-water mixer.If gas is air or ozone, can also oxygenizement be played, the organism in sewage be degraded, thus COD is reduced.
Described suspended layer filtrating area is uniform overflow settling vessel centered by device medullary ray.Equally distributed overflow settling vessel is to keep the stable of suspended layer and balance.After forming suspended layer, part flco can continue to rise, can be blocked when arriving flco blocker, expand suspended layer further, along with the continuous rising of flco, suspended layer constantly thickens, when arriving overflow settling vessel entrance, suspended layer can fall into suspended layer settling vessel, because the density of suspended layer flco is larger, can sink at the bottom of tank further, thus reach running balance.When 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 through suspended layer, thus can realize filteration.
Because suspended sludge layer is made up of flco, density is high, filtration efficiency is filtered higher than the sand grains layer of routine far away, its resistance filtered is very little, so energy consumption is well below the sand filtration of routine, micro-filtration or reverse osmosis membrane filtration, suspended layer from constantly upgrading, can not carry out generally filtering the supplementary of the backwashing procedures that 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 crosses flco, the oil droplet of suspended layer for tackling.Simultaneously because gas density is little, the gas entered by gas-water mixer automatically through flco blocker, can reduce the blocking of flco blocker.
Described flco blocker is packed up by the mechanism at device top or is opened.When flco density is less, suspended layer filter effect bad or not setting regions formed suspended layer, top has scum silica frost to occur, go out water suspension content not up to standard time, flco blocker can be opened, the flco through suspended layer is tackled.
Between described flocculation blocker and overflow settling vessel, suspended layer waste pipe is set.When the salinity because of sewage is high, density causes greatly suspended layer not sink, 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 through time, can backwash tube be enabled, be discharged by suspended layer waste pipe simultaneously.
Being provided with coalescer in described coalescent district, is the oil droplet in order to collect through suspended layer.Described coalescer is oleophylic coalescent pack or coalescing-plate.When oil droplet through suspended layer arrives coalescent pack layer, because the lipophilicity oil droplet of filler to be grown up coalescence by absorption, the oil droplet of growing up when 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 inhibit electrode passivation, and after making process, air supporting shortens the residence time, alleviates the fouling of follow-up suspended sludge filtration unit.
Under ultrasonication, the reaction product of electrode surface can be removed in time, thus alleviates passivation, accelerates the carrying out of electrochemical reaction, also accelerates flocculation reaction speed, provide flocculation efficiency, produce flocculation agent simultaneously, improve electric flocculating effect.
Accompanying drawing explanation
Fig. 1 is present invention process schematic flow sheet;
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-Center 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, and do not represent or limit the scope of the present invention, protection scope of the present invention is as the criterion with claims.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
For better the present invention being described, 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, and ultrasonic probe 1-5 installed by its two ends pipeline, and in tubular type magnetoelectricity flocculator 1-1, carry out electric flocculation reaction, 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, discharges with lift pump 1-4.
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 vessel centered by device medullary ray.
Described device also comprises the mud concentration zones 2-2 being positioned at bottom, the filtrating area 2-3 being positioned at bottom.
Gas-water mixer is provided with in described mixing wastewater with air district 2-1; Described gas-water mixer is made up of filler or traverse baffle; Pressurized air, nitrogen or ozone is passed in described gas-water mixer.
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 by the mechanism at device top or is opened.
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.
Coalescer is provided with in described coalescent district 2-7; 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; Arrange electrode in the metal section 3-2 of described flanged 3-7, 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 of described electrode is arranged with toroidal magnet 3-8.
Described electrode comprises the Center metal electrode 3-5 at the metal section 3-2 center being arranged at flanged 3-7 and two ring electrode hurdle 3-1 around Center 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, Center metal electrode 3-5 is connected by metal wire with outer annular electrode column, Center metal electrode 3-5 and outer annular electrode column by electrode bar electrical connectors 3-3, then connect supply transformer.
Form electric field between adjacent metal electrode, between outer electrode and pipeline section inwall, also form electric field.
Described ring electrode hurdle 3-1 is uniformly distributed multiple metal electrode.
Described Center metal electrode 3-5 is aluminum pipe or iron pipe, the one in its surface uniform distributed multilevel aluminium net, iron net, aluminium grid or reja.
On described ring electrode hurdle 3-1, equally distributed multiple metal electrode is 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, basic physical chemistry and electrochemical reaction below the ion of generation or the electronics of release produce when entering water body:
1) be oxidized: oxygenizement can be divided into direct oxidation and indirect oxidation, and direct oxidation and pollutent directly lose electronics at anode and be oxidized; Indirect oxidation is the negatively charged ion utilizing the electrode potential in solution lower, and such as OH-, Cl-lose electronics at anode and generate new stronger anti-oxidant active material 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) reduce: reductive action is also divided into direct-reduction and indirect reduction, and direct-reduction and pollutent directly obtain electronics and reductive action occurs on negative electrode; Indirect reduction is that first the positively charged ion in pollutent obtains electronics at negative electrode, makes high price or low-valent metal positively charged ion in ionogen obtain electronics at negative electrode and is directly reduced to metal oxide or the precipitated metal that the generation of low price positively charged ion is easy to precipitation.
3) flocculate: after soluble anode passes to direct current, anode loses electronics, form metallic cation, generate the extremely strong metal hydroxides colloid flocculation agent of adsorptive power with the OH-in solution, 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 the most abundant formula, electrochemical reaction is controlled in a closed space, this makes the hydrogen and the oxygen that produce in the reaction or chlorine fully can mix with liquid instead of process limit, limit discharges, and magnetic field and ultrasonic existence inhibit 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 by water dipole combination of not easily moving respectively, thus inhibits the precipitation fouling 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 natural lattice, suppresses the generation of solid crystal, decreases electrode surface fouling.Aqueous polar under the action of a magnetic field strengthens, and strengthens the perviousness of incrustation scale, destroys the bonding force of incrustation scale and metallic surface, dirt is come off, inhibits the passivation of electrode like this.Under the action of a magnetic field, the electromotive force of aqueous systems declines, thus chemical reaction velocity is accelerated; Group is active and strengthen the avidity of metallic surface, impels the generation of complex reaction; Electrostatic double layer is thinning, strengthening adsorption; When charged particle is by magnetic field, is subject to lorentz's force effect and produces orientation movement, thus increasing liquid perturbation reinforcing mass transfer, accelerating the agglomeration of particulate matter in water; When microorganism is by magnetic field, amount of activated suppressed and dead, the cleaning action of metabolism enhancing and the fortified water of being partly activated.Simultaneously through the free effect of water of magnetic field treatment, the fouling of follow up device can be alleviated.
When ultrasonic wave is to sewage effect, play a role with form of energy, reduce process energy barrier, but also have cavatition.Ultrasonic wave exists with longitudinal waves in water, compressional wave density interphase, within the part of rarefaction cycle, gravitation between liquid phase molecule is broken, form cavitation nucleus, the vibration of complex, growth, contraction, collapse, produce shockwave and jet, it is that chemical reaction provides special conditions that the product making to have very high oxidative enters solution, thus improves organic degradation rate.Under ultrasonication, the reaction product of electrode surface can be removed in time, thus alleviates passivation, accelerates the carrying out of electrochemical reaction, also just accelerates flocculation reaction speed, provide flocculation efficiency, produce flocculation agent simultaneously.
Ultrasonic, magnetic field and electric field combine by the present invention, overcome the impact of electrode passivation, improve electric flocculating effect.Water after tubular type magnetoelectricity flocculator of the present invention process, wherein only carries out flocculation reaction and is not separated, after downstream sedimentation or filtration unit process, can arrive the object of purification.In actual application, can, according to the character of suspended substance in water and purification standard and treatment capacity, select to organize serial or parallel connection more.
Flocculation agent, the sewage of flco and gas (air, nitrogen or ozone) that oil-containing after electricity flocculation, electricity flocculation produce mix from entering mixing wastewater with air district together with gas inlet, because of stirring and the changing flow direction of gas, cause stronger turbulent fluctuation, the flco that electricity flocculation is produced, flocculation agent mix with contaminant particle, water, gas three-phase, at this moment the suspended substance in sewage is in flocculated stage in early stage, and the impact of turbulent fluctuation on flocculation is little; 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 when back taper flocculation zone, and because section constantly expands, flow velocity progressively reduces, and flowing start to be tending towards Slow and, in the process that the flco be shaped in flocculation constantly rises, part flco density is increasing, flow velocity is more and more less, finally reaches the balance rising and decline, and forms suspended layer.Part flco can continue to rise, and can be blocked, expand suspended layer further when arriving flco blocker.Along with the continuous rising of flco, suspended layer constantly thickens, and when arriving overflow settling vessel entrance, suspended layer can fall into overflow settling vessel, bottom further sinkage equipment, regularly discharges from mud discharging mouth, thus reaches running balance.When 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 through suspended layer, thus can realize filteration.
When oil droplet through suspended layer arrives coalescent district, because the lipophilicity oil droplet of filler to be grown up coalescence by absorption, the oil droplet of growing up when reaching balance can float formation oil reservoir, concentrate in oil trap and discharge through oil export, water after purification concentrates in water leg and enter surge tank after clear water output flows out, and discharges or reuse through lift pump.If below standard, from the filtrating area bottom filter inlet access to plant, surge tank can be entered after residual suspended substance and oily Filtration Adsorption from filter outlet.
Ultrasonic, magnetic treatment, electricity flocculation, sterilization, air supporting and suspended sludge filter and combine by the present invention, have and prevent electrode fouling and passivation, holdout device fouling, formation filtering layer is fast, strong adaptability, flexible operation is stablized, and whole process does not add chemical agent, be suitable for various containing suspended substance sewage disposal, be especially suitable for the process 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 states, 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, namely 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, to equivalence replacement and the increase of accessory, the concrete way choice etc. of parts selected by the present invention, all drops within 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 characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different 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 (18)
1. an oily(waste)water ultrasonic magnetoelectricity flocculated suspension filtration, purification technique, is characterized in that, oily(waste)water processes by described technique successively in tubular type magnetoelectricity flocculator and suspended sludge filtration unit;
Described tubular type magnetoelectricity flocculator comprises flanged (FLGD) metal section; Arrange electrode in described flanged (FLGD) metal section, 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 of described electrode is arranged with toroidal magnet;
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; Multiple overflow settling vessel is provided with in described suspended layer filtrating area.
2. technique as claimed in claim 1, it is characterized in that, the electrode in described tubular type magnetoelectricity flocculator is the Center metal electrode being 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 the Center metal electrode that is arranged at flanged (FLGD) metal section center and a ring electrode hurdle around Center metal electrode; Described ring electrode hurdle is uniformly distributed multiple metal electrode; Described Center metal electrode is with ring electrode hurdle, be all connected by insulating suspension between ring electrode hurdle with flanged (FLGD) metal section roof.
4. technique as claimed in claim 3, it is characterized in that, described Center metal electrode is connected with supply transformer respectively by electrode bar with ring electrode hurdle.
5. technique as claimed in claim 1, is characterized in that, the electrode in described tubular type magnetoelectricity flocculator comprises the Center metal electrode that is arranged at flanged (FLGD) metal section center and the multiple ring electrode hurdles around Center metal electrode; Described ring electrode hurdle is uniformly distributed multiple metal electrode; Described Center metal electrode is all connected by insulating suspension with between flanged (FLGD) metal section top and adjacent annular electrode column with ring electrode hurdle, ring electrode hurdle;
Connected by metal wire interlayer between the roof of described Center metal electrode, multiple ring electrode hurdle and flanged (FLGD) metal section.
6. technique as claimed in claim 5, be is characterized in that, be connected between described Center metal electrode and multiple ring electrode hurdle with interlayer form by electrode bar with supply transformer.
7. the technique as described in claim 3 or 4, is characterized in that, described Center metal electrode is aluminum pipe or iron pipe, its surface uniform distributed multilevel aluminium net, iron net, aluminium grid or reja.
8. technique as claimed in claim 7, it is characterized in that, on described ring electrode hurdle, equally distributed multiple metal electrode is multilayer aluminum net, iron net, aluminium grid or reja.
9. the technique as described in one of claim 2-4, is characterized in that, described toroidal magnet is circular monopole magnet.
10. technique as claimed in claim 1, is characterized in that, described suspended sludge filtration unit also comprises the mud concentration zones being positioned at bottom.
11. techniques as claimed in claim 10, is characterized in that, also comprise the filtrating area being positioned at bottom.
12. techniques as claimed in claim 11, is characterized in that, are settling section between described flco blocker and coalescent district.
13. techniques as claimed in claim 12, is characterized in that, be also provided with clear water zone and oil slick district above described coalescent district.
14. techniques as described in one of claim 1-6, is characterized in that, be provided with gas-water mixer in described mixing wastewater with air district.
15. techniques as claimed in claim 1, it is characterized in that, described suspended layer filtrating area is uniform overflow settling vessel centered by device medullary ray.
16. techniques as claimed in claim 1, it is characterized in that, described flco blocker is made up of catch net or packing layer.
17. techniques as claimed in claim 15, is characterized in that, arrange suspended layer waste pipe between described flocculation blocker and overflow settling vessel.
18. techniques as claimed in claim 16, it is characterized in that, the top of described flocculation blocker is provided with backwash tube.
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| CN104709978B (en) * | 2015-02-12 | 2018-04-03 | 北京工商大学 | One kind rotation cage net formula electric flocculation reactor |
| CN105601002B (en) * | 2015-12-29 | 2018-10-23 | 宁磊 | A kind of processing system and method for purification of organic waste water |
| CN106145522B (en) * | 2016-07-27 | 2018-12-18 | 杭州绿一环保技术有限公司 | A kind of processing method of industrial wastewater |
| CN106277542A (en) * | 2016-08-31 | 2017-01-04 | 胡小弟 | A kind of oil-contaminated water processing method |
| 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 |
| CN108911057A (en) * | 2018-08-03 | 2018-11-30 | 杭州睿清环保科技有限公司 | A kind of high-frequency electromagnetic catalyst reaction device administered for trade effluent |
| 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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