CN101618918A - Optomagnetic sewage treatment device and optomagnetic sewage treatment method - Google Patents
Optomagnetic sewage treatment device and optomagnetic sewage treatment method Download PDFInfo
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- CN101618918A CN101618918A CN200910109183A CN200910109183A CN101618918A CN 101618918 A CN101618918 A CN 101618918A CN 200910109183 A CN200910109183 A CN 200910109183A CN 200910109183 A CN200910109183 A CN 200910109183A CN 101618918 A CN101618918 A CN 101618918A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention relates to a photomagnetic sewage treatment device and a photomagnetic sewage treatment method. The photomagnetic sewage treatment device comprises a raw water tank, an ultrasonic wave generation device, a magnetizing device, an ultraviolet light source, an acid liquor injection device, a pH meter, a hydrogen peroxide injection device and a main reactor, wherein the an liquor inlet of the main reactor is simultaneously communicated with the raw water tank contained with sewage, the acid liquor injection device contained with acid liquor and the hydrogen peroxide injection device contained with hydrogen peroxide; the ultrasonic wave generation device, the magnetizing device and the ultraviolet light source are arranged in a position which can influence the sewage to be processed inside the main reactor; the main reactor is also internally provided with a photocatalyst which is contacted with the sewage to be processed; the detection end of the pH meter is communicated with the main reactor to measure the pH value of the sewage to be processed, and the output end of the pH meter is connected with the acid liquor injection device. The invention also provides the photomagnetic sewage treatment method. The photomagnetic sewage treatment device and the photomagnetic sewage treatment method utilize ultrasonic waves/magnetic fields/H2O2/UV/TiO2 to form a united system and has good catalyzing and oxidizing effect.
Description
Technical field
The present invention relates to waste disposal plant and method, relate in particular to a kind of novel optomagnetic waste disposal plant and method.
Background technology
At present, the existing maturation process of much administering about wastewater from chemical industry, dyeing waste water, printing-ink waste water, the oil spout waste water that sprays paint, electroplating wastewater, these maturation process are applied to make very big contribution for the environmental protection of China in the waste water treatment.Common process is the technology that comprises steps such as chemical coagulation and precipitation, air supporting and biochemical treatment, but owing in the waste water there be the pollutent of various compositions, the organic concentration height of a variety of waste water, salt content height, the waste water that has also contains the toxic action component of microorganism, so the effect of biochemical treatment is not very desirable; And in a lot of organism water solubles, not good with physical method as precipitation, air-float technology treatment effect yet.Therefore, adopt the mode of oxidation to handle organism in the waste water usually, but conventional method for oxidation have shortcoming separately; The simple strong oxidizer that adds carries out chemical oxidation, and treatment effect is also bad; If handle with the wet oxidation device, the one, investment is big, and the 2nd, the operational conditions harshness, day-to-day operation is difficulty relatively; If use the dioxy oxychlorination, need pharmaceutical chemicals field fabrication with sodium chlorate and salt acids, the reagent cost height, also having is exactly because of the adding of medicament finally generates the salt of sodium-chlor and so on, if be used for the biochemical treatment effect that biochemical pre-treatment then can influence the back because of the increase of salts contg; Though ozone oxidation has the advantages that oxidation effectiveness is good, oxidation rate is fast, the facility investment of ozonizer is big, power consumption is high, and one kilogram of ozone energy consumption of output reaches 16-20KW, causes investment and running cost higher.
In order better to handle the organism composition in the waste water, formed following various wastewater processing scheme at present with different mechanism.
One, UV-light and titanium dioxide mechanism
Titanium dioxide produces valence band hole (h under the irradiation of UV-light
+) and conduction band electron (e
-), wherein the valence band hole is a kind of strong oxidizer, and is a kind of strong reductant on the conduction band electron, therefore most of organism and inorganics can both be by photo-generated carrier (valence band hole and conduction band electron) oxidation directly or indirectly or reduction.Light-catalyzed reaction in the aqueous solution is losing the TiO of electronics
2The surface mainly is the agent of capturing that water molecules, OH and organism itself all can serve as the valence band hole, thereby it is extremely strong to form oxidation capacity.OH。Simultaneously the highly active conduction band electron on surface has very strong reducing power, can reduce and remove metal ion in the water.Reaction formula is as follows:
H
2O
2+UV-2。OH
TiO
2+UV→h
++e
-
h
++ e
-→ heat
H
2O→H
++OH
-
h
++OH
-→。OH
h
++H
2O→。OH+H
+
e
-+O
2→O
2 -
O
2 -+H
+→HO
2 -
HO
2 -→H
2O
2+O
2
H
2O
2+O
2 -→。OH+OH
-+O
2
M
n++ne
-→M
0
。OH is a kind of extremely strong chemical oxidizing agent, and its oxidizing potential is more much higher than common oxygenant such as ozone, chlorine and hydrogen peroxide etc.Each oxidizing potential is listed as follows:
| Oxygenant | OH | O 3 | H 2O 2 | HClO | CL 2 |
| Oxidizing potential (volt) | 2.80 | 2.07 | 1.77 | 1.63 | 1.36 |
And hydroxyl free radical reaction speed is very fast, more faster than conventional oxidant speed of response, be more than 106 times of popular response velocity factor, its oxidizing reaction does not have selectivity, has the organism of complexing can both carry out oxidizing reaction to each type organic in the waste water such as tensio-active agent, grease, prussiate and other counterweight metal.This system can realize the permineralization of organic pollutant, and last organism is oxidized to carbonic acid gas and water, because of the complicated component in the waste water, each component with.The pilot process of OH reaction also is difficult to describe with simple equation clear, and its reaction mechanism countries in the world are also in constantly studying.
Two, ultrasonic wave mechanism
When the ultrasonic wave of certain intensity is propagated in medium, can produce series of effects such as mechanics, calorifics, optics, electricity and chemistry, these effects can reduce following three kinds of basic roles:
1. mechanical effect
Ultrasonic wave is the dispersed form of mechanical energy, and is relevant with wave process, can produce the linear oscillating action that becomes of imitating.When propagating in the ultrasonic liquid, though its homologous pints displacement amplitude is very little, the ultrasonic particle acceleration that causes is very big.If the ultrasonic wave of 20KHz, 1W/ square centimeter is at water transmission, then the sound pressure amplitude of its generation is 173Kpa, this means in the sound pressure amplitude per second kind and will between positive and negative 173Kpa, change 20,000 times, the acceleration of maximum particle reaches the every quadratic power of 144 myriametres second, be approximately 1500 times of universal gravity constant, fierce like this and fast-changing mechanical movement is exactly the mechanical vibration effect of power ultrasonic.
2. cavatition
When ultrasonic wave is propagated in liquid medium, when the sound intensity reaches a regular intensity, the sound field zone of action forms partial temporary transient negative pressure in the liquid, make the microbubble in the liquid grow, splash and expand to breaking suddenly, cause producing the intensive shock wave in the bubble liquid on every side, form the High Temperature High Pressure of partial points, during the cavitation bubble collapse, around cavitation bubble, produce the transient high temperature of 5000K and the high pressure of about 50mpa in the little space, and the temperature rate of cooling reaches 10 9 power k/s, and reach the jet of 400Km, ultrasonic cavitation effect that Here it is with intense impact ripple and speed per hour.
3. heat effect
Ultrasonic wave is propagated in medium, and its vibrational energy is constantly changed into heat energy and makes self temperature rising by the medium absorption.The continual absorption of acoustic energy can cause the integral body heating in the medium, when local heating the border outside and cavitation formation shock wave, and the local heating at wavefront place etc., the heat effect of Here it is power ultrasonic.
The ultrasonic mechanism that influences chemical reaction
1. ultrasonically catalyzing
The ultrasonically catalyzing reaction is an emerging research field.At present, the research of relevant reaction model, mechanism is still very fuzzy, but numerous scientific payoffss has been confirmed the unusual effect of catalyzed reaction.It mainly acts on: the one, and high-temperature and high-pressure conditions helps reactant and is cracked into free radical and second order charcoal, forms more active material.The 2nd, shockwave and microjet have to inhale to solid surface to be separated and cleanup action.The 3rd, shockwave can destroy the reactant structure, disperses the reaction system.The 4th, ultrasonic cavitation causes the distortion of metal character and the formation in internal strain district, thereby improves the metallochemistry reactive behavior.Speed of reaction ratio under the ultrasound condition does not have when ultrasonic faster, and the reaction times shortens greatly.
2. ultrasonic degradation
The supersound process macromole of can degrading, the degradation effect of especially handling high-molecular weight polymer is more remarkable.Ultrasonic degradation comes from ultransonic mechanical effect, cavitation effect and heat effect.
3. the application of power ultrasonic in water treatment
Thereby the cavitation effect of power ultrasonic causes the realization of ultrasonic wave sewage disposal purpose for harmful organic substance in the degradation water provides unique physicochemical environment.The high-energy that collapse produced of ultrasonic cavitation bubble is enough to break chemical bonds.In the aqueous solution, cavitation bubble collapse generation hydroxy (.OH) and the hydrogen base (.H), with organism generation oxidizing reaction.The physicochemical environment of cavitation uniqueness has been opened up new means of chemical reaction, suddenly increase chemical reaction velocity, organism there is very strong degradation capability, through continuing the ultrasonic material that harmful organic substance can be degraded to nontoxic or low toxicity such as mineral ion, water, carbonic acid gas or organic acid.
Three, magnetic field water treatment mechanism
Water just becomes " magnetized water " through the magnetic field of certain intensity.Studies show that the variation that can produce physicochemical property after the hydromagneticization at present, mechanism wherein still can not be affirmed.Some scholars think that magnetic field can destroy the original structure of water, make original bigger associated water molecule group become less associated water molecule group, or even individual molecule.And the hydrogen bond in the molecule also has part because negative ions opposite spin and rupturing under the effect of Lorentz force.So the variation that the water after the magnetization can show some character, as: pH value, density, volatility, solvability, surface tension, specific conductivity, boiling point, freezing point all have different changes, and this change and added magnetic field size have confidential relation.Magnetized water is because its special nature is applied to engineering widely.Magnetization is simple physical process, is not softening process.It is generally acknowledged that it mainly is the crystallization of having accelerated solution inside that water system carries out magnetic treatment, thereby direct crystallization and the hard deposition of salt on heating surface significantly reduced, play the effect of antiscale.Studies show that various ions etc. all have confidential relation in the same magneticstrength of the scale inhibition effect in magnetic field, solution degree of supersaturation, flow velocity and the solution.In addition, also have a kind of saying to think that magnetic treatment has changed the structure of water itself, thereby changed some proterties.Consider simultaneously from this two aspect, mainly contain following several hypothesis and deduction.
(1) Lorentz force action: moving mutually of water and magnetic current, can produce induced current, under the effect of Lorentz force, the water molecules of low-pole and the charged ion of other impurity are done reversing motion.In this process, negative ions or particle collide " the ionic association body " that forms some amount mutually, this association body has enough stability, has formed a large amount of crystallization nucleis in water, is being present in the water that the suspended particle of core can be stable with these crystal.
(2) polarized action: the polarized action in magnetic field makes the crystallised component of salt that variation take place.Micropartical polarity strengthens, and cohesive force weakens, and the associated molecule chain of original length in the water is blocked to the short associated molecule chain and the distortion of charged ion, has destroyed interionic electrostatic attraction, has changed crystallization condition, forms dispersive and stablizes small-crystalline.
(3) hysteresis effect: magnetic field causes the hysteresis effect of salt quasi-molecule in the water or ionic magnetic couple, thereby has changed the solvability of salt in water, and the mutual affinity of salt quasi-molecule (crystallinity) is disappeared, and prevents the crystallization of macrocrystal.
(4) magnetic torque reorientation: in certain radical reaction, influence of magnetic field is paired magnetic torque reorientation in group, influences other chemical reactions by so middle mechanism.Variation has taken place in reaction kinetics, and variation has also taken place the proportionlity between the product that newly obtains in the reaction result.
(5) hydrogen bond distortion: after the dipole molecule generation orientation polarization effect of magnetic field to water, electronic cloud can change, and causes the bending and local short the splitting of hydrogen bond, and the quantity of single water molecules is increased.These water moleculess have occupied each space of solution, can suppress crystal formation.And the overall performance of water is changed.
(6) activation energy changes: the influence in magnetic field and the conversion of system are related.Though the energy that water obtains when magnetization is seldom, in system, there be one " energy barrier " between beginning and the termination, must carry corresponding energy to trigger activation energy to system for overcoming this energy barrier.The effect of magnetic field short period of time plays a part " catalysis " water system activation energy and changes, and finally causes the variation of total system character.
Though existing aforesaid multiple sewage disposal scheme in the prior art, but use various sewage disposal schemes separately, still there are shortcomings such as wastewater treatment efficiency is not good, speed of response is slow, cost is high, inconvenient operation in the electroplating wastewater few for water content, that intractability is big, the pre-treatment waste water in the board wastewater, surface treatment waste water, spray paint oil spout waste water, wastewater from chemical industry, dyeing waste water, pharmacy waste water etc.
Summary of the invention
Therefore, at the various shortcomings of existing in prior technology, the object of the present invention is to provide a kind of the associating to utilize ultrasonic waves/H
2O
2/ UV (ultraviolet ray)/TiO
2The optomagnetic waste disposal plant and the method for disposing of sewage can be handled water content is few, intractability is big electroplating wastewater, the pre-treatment waste water in the board wastewater, surface treatment waste water, oil spout waste water, wastewater from chemical industry, dyeing waste water, pharmacy waste water spray paint.
For achieving the above object, the invention provides a kind of optomagnetic waste disposal plant, it comprises raw water box, ultrasonic generator, magnetizing assembly, ultraviolet source, acid solution injection device, PH meter, hydrogen peroxide injection device, main reactor: the hydrogen peroxide injection device that the fluid inlet of described main reactor is communicated with the raw water box that sewage is housed, the acid solution injection device that acid solution is housed simultaneously and hydrogen peroxide is housed, sewage, acid solution and hydrogen peroxide together enter in the main reactor with pending; Described ultrasonic generator, magnetizing assembly and ultraviolet source are arranged at the position that can have influence on treatment sewage in the main reactor, when handling treatment sewage, hyperacoustic treatment sewage that acts on simultaneously that the irradiation of the formed magnetic field of magnetizing assembly, ultraviolet source and ultrasonic generator send; Also be provided with in the described main reactor and the contacted photocatalyst of treatment sewage; The detecting end of described PH meter is communicated with main reactor to measure the pH value of treatment sewage, the output terminal of PH meter connects the acid solution injection device, when handling treatment sewage, the acid solution injection device injects acid solution to control the pH value of treatment sewage in the main reactor according to the measuring result of PH meter to main reactor.
Wherein, the pH value in described acid solution injection device and the PH meter control main reactor is 3-4.
Wherein, the hydrogen peroxide concentration in the described hydrogen peroxide injection device is 50 mg/litre.
Wherein, the bottom of described main reactor connects a recycle pump, and this recycle pump connects an ejector then, and this ejector connects the top of this main reactor again, thereby the treatment sewage in the main reactor is circulated.
Wherein, the detecting end of described PH meter is connected between main reactor, recycle pump and the ejector in the formed treatment sewage circulation loop.
Wherein, also be connected with filtration unit between the fluid inlet of described main reactor and the raw water box.
Wherein, be provided with some photochemical catalysis plates in the described main reactor, described photocatalyst is distributed in the surface of photochemical catalysis plate with coating form.
Wherein, described ultraviolet source is the some ultraviolet lamp tubes that are fixed in the main reactor, and described ultraviolet lamp tube is axially installed along the photochemical catalysis plate.
Wherein, described magnetizing assembly is the some magnet that are fixed in the main reactor.
The present invention also provides a kind of optomagnetic sewage water treatment method, and it comprises:
Sewage in the step 300, main reactor in magnetic field, ultrasonic wave, ultraviolet light and TiO
2Effect is reacted down in the time of photocatalyst, makes by adding sulfuric acid during reaction that the pH value of sewage is controlled to be 3-4 in the main reactor.
In sum, optomagnetic waste disposal plant of the present invention and method have realized ultrasonic waves/H
2O
2/ UV/TiO
2Association system, catalyzed oxidation is effective, can implement at normal temperatures and pressures, applied widely, can handle high density, difficult biochemical industrial sewage, energy consumption is low, dosing is few, and running cost is low, and does not produce secondary pollution after the oxidation, do not increase the salts contg in the waste water, help the subsequent disposal of waste water.
Description of drawings
Below in conjunction with accompanying drawing,, will make technical scheme of the present invention and other beneficial effects apparent by the specific embodiment of the present invention is described in detail.
In the accompanying drawing,
Fig. 1 is the structural representation of optomagnetic waste disposal plant one preferred embodiment of the present invention;
Fig. 2 is the front view of the internal structure of the catalyzed oxidation case of optomagnetic waste disposal plant one preferred embodiment of the present invention;
Fig. 3 is the vertical view of the internal structure of the catalyzed oxidation case of optomagnetic waste disposal plant one preferred embodiment of the present invention;
Fig. 4 is the structural representation behind the removal magnetizing assembly among Fig. 2;
Fig. 5 is the left view of the internal structure of the catalyzed oxidation case of optomagnetic waste disposal plant one preferred embodiment of the present invention;
Fig. 6 is the structural representation of the magnetizing assembly of optomagnetic waste disposal plant one preferred embodiment of the present invention;
Fig. 7 is the front view of the ultraviolet source of optomagnetic waste disposal plant one preferred embodiment of the present invention;
Fig. 8 is the vertical view of the ultraviolet source of optomagnetic waste disposal plant one preferred embodiment of the present invention;
Fig. 9 is the left view of the ultraviolet source of optomagnetic waste disposal plant one preferred embodiment of the present invention;
Figure 10 is the schema of optomagnetic sewage water treatment method one preferred embodiment of the present invention;
Figure 11 is the process flow sheet of one preferred embodiment when handling high concentrated organic wastewater according to the optomagnetic sewage water treatment method of the present invention;
Figure 12 is the process flow sheet of one preferred embodiment when handling low-concentration organic waste water according to the optomagnetic sewage water treatment method of the present invention.
Embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is the structural representation of optomagnetic waste disposal plant one preferred embodiment of the present invention, Fig. 2 is the front view of the internal structure of the catalyzed oxidation case of optomagnetic waste disposal plant one preferred embodiment of the present invention, and Fig. 3 is the vertical view of the internal structure of the catalyzed oxidation case of optomagnetic waste disposal plant one preferred embodiment of the present invention.
In this preferred embodiment, optomagnetic waste disposal plant comprises raw water box 1, ultrasonic generator 2, magnetizing assembly 3, ultraviolet source 4, acid solution injection device 5, PH meter 6, hydrogen peroxide injection device 7, main reactor 8, wherein ultrasonic generator 2, magnetizing assembly 3, ultraviolet source 4 and main reactor 8 are installed in the catalyzed oxidation case 9, catalyzed oxidation case 9 mainly plays the effect of isolating and protecting, main reactor 8 is for carrying out the sealed vessel of sewage disposal reaction: the fluid inlet of main reactor 8 is communicated with the raw water box 1 that sewage is housed simultaneously, the acid solution injection device 5 of acid solution is housed and the hydrogen peroxide injection device 7 of hydrogen peroxide is housed, sewage, acid solution and hydrogen peroxide together enter in the main reactor 8 with pending, the hydrogen peroxide volume pump 72 that the acid solution volume pump 52 that acid solution injection device 5 comprises acid solution jar 51 and is attached thereto, hydrogen peroxide injection device 7 comprise dioxygen water pot 71 and be attached thereto; Ultrasonic generator 2, magnetizing assembly 3 and ultraviolet source 4 are arranged at the position that can have influence on treatment sewage in the main reactor 8, when handling treatment sewage, hyperacoustic treatment sewage that acts on simultaneously that the irradiation of magnetizing assembly 3 formed magnetic fields, ultraviolet source 4 and ultrasonic generator 2 send, in this preferred embodiment, except that the magnetizing assembly 3 that is installed on main reactor 8 inside, also comprise the permanent magnetism descaling device 10 that is installed on main reactor 8 outsides; Also be provided with in the main reactor 8 and the contacted photocatalyst of treatment sewage, be used for when sewage reacts, rising katalysis; The detecting end of PH meter 6 is communicated with main reactor 8 to measure the pH value of treatment sewage, the output terminal of PH meter connects acid solution injection device 5, when handling treatment sewage, acid solution injection device 5 injects acid solution to control the pH value of treatment sewage in the main reactor according to the measuring result of PH meter to main reactor 8.
PH meter 6 is connected with the acid solution volume pump 52 of acid solution injection device 5, adds acid thereby control in main reactor 8, and the maintenance pH value is 3-4, and the acid solution of using can be sulfuric acid; Hydrogen peroxide concentration in the dioxygen water pot 71 can be 50 mg/litre.The bottom of main reactor 8 connects a recycle pump 11, and this recycle pump 11 connects an ejector 12 then, and this ejector 12 connects the top of this main reactor 8 again, thereby the treatment sewage in the main reactor 8 is circulated; The detecting end of PH meter 6 is connected between main reactor 8, recycle pump 11 and the ejector 12 in the formed treatment sewage circulation loop, and sampling detects pH value in the sewage from circulation.Also be connected with filtration unit 13 between the fluid inlet of main reactor 8 and the raw water box 1, this filtration unit 13 can be deep bed filter, and raw water box 1 also is connected with lift pump 14, extracts sewage by lift pump 14 from raw water box 1.Optomagnetic waste disposal plant of the present invention has adopted an electrical control cubicles 15 that each electricity consumption assembly is unified power supply control, lift pump 14 can link with hydrogen peroxide volume pump 72, thereby inject sewage and hydrogen peroxide simultaneously to main reactor 8, all motors in the device can be provided with pilot lamp with display working condition on electrical control cubicles 15.
Referring to Fig. 2, Fig. 3, Fig. 4 and Fig. 5, Fig. 4 is the structural representation behind the removal magnetizing assembly among Fig. 2, Fig. 5 is the left view of the internal structure of the catalyzed oxidation case of optomagnetic waste disposal plant one preferred embodiment of the present invention, thus the internal structure of visible main reactor 8 and catalyzed oxidation case 9.In this preferred embodiment, main reactor 8 is positioned at the right side of catalyzed oxidation case 9 inside, ultrasonic generator 2 and permanent magnetism descaling device 10 are arranged at the left side of main reactor 8 according to upper-lower position, magnetizing assembly 3 and ultraviolet source 4 are installed on main reactor 8 inside, and main reactor 8 is a rectangular parallelepiped sealed vessel.Ultrasonic generator 2 and permanent magnetism descaling device 10 have the product of a large amount of technology maturations on market, no longer describe in detail at this.
Be provided with some photochemical catalysis plates 16 in the main reactor 8, photocatalyst is distributed on the surface and main reactor inwall of photochemical catalysis plate with coating form, and photocatalyst can be a coating of titanium dioxide.Plural number photochemical catalysis plate 16 is fixed in the space of main reactor 8 evenly and at intervals.Ultraviolet source 4 is for being fixed in the some ultraviolet lamp tubes in the main reactor 8, and these ultraviolet lamp tubes are axially installed along photochemical catalysis plate 16, and what each ultraviolet lamp tube was all parallel is arranged between the two photochemical catalysis plates 16, and ultraviolet lamp tube can adopt the ultraviolet lamp tube of 220V 50Hz 100W.The photocatalyst surface that such structure unit's volume sewage is contacted is long-pending big, and in this preferred embodiment, the surface-area that a cube volume sewage can contact photocatalyst reaches more than 20 squares, and with the solar energy equipment ratio, floor space is dwindled greatly.When sewage flows in main reactor 8, the coating of titanium dioxide contact on main reactor 8 inwalls and photochemical catalysis plate 16 surfaces, on its surface photocatalysis oxidation reaction takes place, hydrogen peroxide also produces each kinds of oxidation reaction under action of ultraviolet light simultaneously, finally reaches the purpose of removing pollutent; Can make full use of the space and the surface of container like this, luminous energy also can be fully used, and under the condition of same treatment effect, can reduce hydrogen peroxide dosage and reaction times.UV-irradiation intensity and reaction times can determine according to the sewage quality and the water yield, and the concentration low reaction time is short, and dosing (hydrogen peroxide etc.) amount is also few, and required ultraviolet luminous energy is also few, and concentration is high more, unit consumption of energy and add dose and all corresponding increase of reaction times.In this preferred embodiment, magnetizing assembly 3 has the some magnet 31 that are fixed in the main reactor 8, and plural magnet 31 is distributed in the space of main reactor 8 equably, thereby forms uniform magnetic field to act on the sewage in the main reactor 8.
Referring to Fig. 5 and Fig. 6, Fig. 6 is the structural representation of the magnetizing assembly of optomagnetic waste disposal plant one preferred embodiment of the present invention.Plural number magnet 31 is fixed in the anchor 32 of magnetizing assembly 3 by parallel flat tube, magnet 31 forms equally spaced matrix form and arranges in the plane of anchor, it is evenly distributed in main reactor 8 that the anchor 32 of a plurality of then magnetizing assemblys 3 is parallel to photochemical catalysis plate 16 again, thereby form uniform magnetic field.
Referring to Fig. 4, Fig. 7, Fig. 8 and Fig. 9, Fig. 7 is the front view of the ultraviolet source of optomagnetic waste disposal plant one preferred embodiment of the present invention, Fig. 8 is the vertical view of the ultraviolet source of optomagnetic waste disposal plant one preferred embodiment of the present invention, and Fig. 9 is the left view of the ultraviolet source of optomagnetic waste disposal plant one preferred embodiment of the present invention.In this preferred embodiment, what the fluorescent tube of ultraviolet source 4 was parallel is fixed in the light source framework 41, and each light source framework 41 can be regarded a catalytic oxidation unit as; Be respectively equipped with some ultraviolet lamp fixed orificess 42 on a pair of relative side plate of light source framework 41, ultraviolet lamp wears by ultraviolet lamp fixed orifices 42 and is fixed in light source framework 41, and photochemical catalysis plate 16 also can be fixed in the both sides of ultraviolet lamp by light source framework 41.Amassing to determine catalytic oxidation unit quantity and arrangement mode according to reaction times, ultraviolet lamp power, photocatalytic surfaces, can be one group with a plurality of cell string, and many then groups are in parallel, and assembling mode is flexible, is convenient to maintenance.According to the size of treatment capacity, the catalytic oxidation unit specification also can adjust accordingly.
All materials in the optomagnetic waste disposal plant of the present invention all can adopt acid and alkali-resistance sludge proof stainless steel, and assurance equipment can operation steady in a long-term.The associating of optomagnetic waste disposal plant utilization sound of the present invention, magnetic, light, wastewater treatment efficiency is much better than independent a kind of treatment process; Optomagnetic waste disposal plant of the present invention utilizes ultrasonic waves/H
2O
2/ UV/TiO
2Form the system of associating, promptly add in the sewage hydrogen peroxide or oxygen under the irradiation of sound field, magnetic field, UV-light, produce hydroxyl radical free radical (.OH) and TiO
2Under uviolizing, produce valence band hole (h
+) and conduction band electron (e
-), the while is some physical propertiess of magnetic field energy change water also, three's associating, and treatment effect and speed of response are accelerated greatly.
Optomagnetic waste disposal plant of the present invention has following advantage:
1, equipment is applied widely: both applicable to the support equipment of newly-built wastewater treatment, also applicable to the transformation of sewage treatment equipment now.Can be placed on the front end of waste water treatment technology, also can be used for waste water treatment back (mainly being to remove COD (chemical oxygen demand (COD))), also, improve wastewater biodegradability applicable to the Biological Pretreatment of high-concentration hardly-degradable waste water according to practical situation.Be specially adapted to the disposable improvement of back yard industry wastewater through organic matter.
2, ultraviolet lamp device adopts integrated immersion, can mount and dismount cleaned and changed convenience from two ends, PH is adjusted in slightly acidic because of waste water, and metal ion can not deposit, and organism is by exhaustive oxidation, fouling and organism adhesion phenomenon can not take place in the main reactor, need not frequent cleaning.Treatment process is simple like this, convenient operation and management.And before the water inlet preposition permanent magnetism descaling device is housed, utilize permanent magnetism (rubidium, iron, boron), when water passes through magnetic field, water molecules twists, is out of shape, reverses, shakes, makes its molecule to strengthen making associate in the original the water various chains that form, the macromole (H of bulk thereby produce under the effect in magnetic field
2O) N is dissociated into single bimolecular (H
2O) 2, the activity of water is increased, changed the physical structure of water, by magnetic field to the ion generation effect in the solution, make the needle crystal of calcium in the water, magnesium salts foulant change over the crystalline particulate body, make them not become hard incrustation scale attached on wall or the tube wall by weave in, but become small solids precipitation in the bottom, discharge with blowdown, thereby reach the effect of preventing incrustation scale; To original old incrustation scale also can make it to degrade gradually, soften, become flexible, chap by the effect of treated water, up to coming off, reach the scale removal purpose, prevent that salt in the waste water is at the ultraviolet lamp sleeve surface scale.
3, this equipment moves at normal temperatures and pressures, controls simple and conveniently, safeguards fewly, can realize full automatic control.
4, the reaction final product is carbonic acid gas, water, nitrogen and other harmless oxide compound, do not produce secondary pollution, be specially adapted to the pretreatment technology of sewage recovery usefulness, assurance sewage reclaims uses influent quality, and it is dirty stifled to prevent that organism from causing RO film (reverse osmosis membrane).
5, catalytic surface is long-pending big, and the average catalysis area of one cube of water reaches more than 20 square metres the catalytic efficiency height; The ultraviolet light-use is abundant, reduces the processed in units energy consumption greatly.The more original technology of running cost is low, and dosing lacks than original technology, and treatment effect is better than original technology, reduces the increase of soluble solids in the waste water simultaneously.
As shown in figure 10, it is for the schema of optomagnetic sewage water treatment method one preferred embodiment of the present invention; Optomagnetic sewage water treatment method of the present invention can be implemented in optomagnetic waste disposal plant provided by the present invention, and this preferred embodiment comprises:
React under sewage in the step 300, main reactor act in magnetic field, ultrasonic wave, ultraviolet light and TiO2 photocatalyst, make by adding sulfuric acid during reaction that the pH value of sewage is controlled to be 3-4 in the main reactor; Sewage wherein reacts in main reactor, is mainly catalytic oxidation, uses PH instrument control pH value in needed scope, and pH value is between 3-4 the time, and sewage treatment effect is preferable, and for example can to choose pH value be 3, be 4 or be 3.5 etc.; Reaction times, it was short relatively to do biochemical pre-treatment the reaction time according to the difference of former water (pending waste water) concentration, processing intent and difference, and the low the reaction time of concentration is also short.
As Figure 11 and shown in Figure 12, Figure 11 is the process flow sheet of one preferred embodiment when handling high concentrated organic wastewater according to the optomagnetic sewage water treatment method of the present invention, and Figure 12 is the process flow sheet of one preferred embodiment when handling low-concentration organic waste water according to the optomagnetic sewage water treatment method of the present invention; According to the difference of organic concentration in the sewage and the difference of sewage treatment process requirement, when pending sewage is reacted to the processing requirement conditions needed according to method of the present invention, can selects to enter again follow-up biochemical treatment system according to practical situation and carry out biochemical reaction or directly discharging.
By adopting optomagnetic waste disposal plant provided by the present invention or method, in the laboratory, all kinds of sewage are carried out the lab scale test, the representative data that obtains is listed as follows:
| Sequence number | The waste water title | Influent density (mg/L) | Handle back (mg/L) | Clearance |
| ??1 | Decolorizing printing and dyeing waste water | 800 times of colourities (redness) | ＜20 times of colourities | ??91.0％ |
| ??2 | Silver-plated cyanide wastewater | ??CN -＝52.00 | ??0.20 | ??99.9％ |
| ??3 | Discharge outlet waste water | ??COD Cr＝156.80 | ??59.10 | ??62％ |
| ??4 | Washes | ??COD Cr＝488.20 | ??46.6 | ??90.5％ |
| ??5 | Electroplating and complexing waste water | ??COD Cr＝268.20 | ??76.6 | ??71.4％ |
| ??6 | Printing-ink waste water | ??COD Cr＝668.0 | ??73.1 | ??89.0％ |
| ??7 | Oil spout waste water sprays paint | ??COD Cr＝4568.0 | ??352.3 | ??92.3％ |
| ??8 | Wastewater from chemical industry | ??COD Cr＝3560.0 | ??32.0 | ??99.1％ |
In the last table, COD (Chemical Oxygen Demand) is a chemical oxygen demand (COD), COD
CrBe the chemical oxygen demand (COD) that adopts dichromate titration to measure.
Optomagnetic waste disposal plant of the present invention and method can be applicable to electroplating wastewater, the pre-treatment waste water in the board wastewater, surface treatment waste water, spray paint oil spout waste water, wastewater from chemical industry, dyeing waste water, the pharmacy waste water etc. that the water yield is few, intractability is big, and be concrete as waste water such as chemical industry, printing and dyeing, grease, printing ink, papermaking, leathers.The present invention can remove hazardous and noxious substances and the colourity in the waste water, improves wastewater biodegradability, and perhaps direct oxidation is to wastewater discharge standard; Handle the back water outlet and be acid, discharge or enter down the one preceding reply of treatment process PH and adjust.Optomagnetic waste disposal plant of the present invention and method can be implemented at normal temperatures and pressures, specially high density, difficult biochemical industrial sewage are handled, compare with the existing oxidation unit that is used for wastewater treatment, running cost is minimum, and do not produce secondary pollution after the oxidation, do not increase the salts contg in the waste water, help the subsequent disposal of waste water.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to technical scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection domain of accompanying Claim of the present invention.
Claims (10)
1, a kind of optomagnetic waste disposal plant, it is characterized in that, comprise raw water box, ultrasonic generator, magnetizing assembly, ultraviolet source, acid solution injection device, PH meter, hydrogen peroxide injection device, main reactor: the hydrogen peroxide injection device that the fluid inlet of described main reactor is communicated with the raw water box that sewage is housed, the acid solution injection device that acid solution is housed simultaneously and hydrogen peroxide is housed, sewage, acid solution and hydrogen peroxide together enter in the main reactor with pending; Described ultrasonic generator, magnetizing assembly and ultraviolet source are arranged at the position that can have influence on treatment sewage in the main reactor, when handling treatment sewage, hyperacoustic treatment sewage that acts on simultaneously that the irradiation of the formed magnetic field of magnetizing assembly, ultraviolet source and ultrasonic generator send; Also be provided with in the described main reactor and the contacted photocatalyst of treatment sewage; The detecting end of described PH meter is communicated with main reactor to measure the pH value of treatment sewage, the output terminal of PH meter connects the acid solution injection device, when handling treatment sewage, the acid solution injection device injects acid solution to control the pH value of treatment sewage in the main reactor according to the measuring result of PH meter to main reactor.
2, optomagnetic waste disposal plant as claimed in claim 1 is characterized in that, the pH value in described acid solution injection device and the PH meter control main reactor is 3-4.
3, optomagnetic waste disposal plant as claimed in claim 1 is characterized in that, the hydrogen peroxide concentration in the described hydrogen peroxide injection device is 50 mg/litre.
4, optomagnetic waste disposal plant as claimed in claim 1, it is characterized in that the bottom of described main reactor connects a recycle pump, this recycle pump connects an ejector then, this ejector connects the top of this main reactor again, thereby the treatment sewage in the main reactor is circulated.
5, optomagnetic waste disposal plant as claimed in claim 4 is characterized in that, the detecting end of described PH meter is connected between main reactor, recycle pump and the ejector in the formed treatment sewage circulation loop.
6, optomagnetic waste disposal plant as claimed in claim 1 is characterized in that, also is connected with filtration unit between the fluid inlet of described main reactor and the raw water box.
7, optomagnetic waste disposal plant as claimed in claim 1 is characterized in that, is provided with some photochemical catalysis plates in the described main reactor, and described photocatalyst is distributed in the surface of photochemical catalysis plate with coating form.
8, optomagnetic waste disposal plant as claimed in claim 7 is characterized in that, described ultraviolet source is the some ultraviolet lamp tubes that are fixed in the main reactor, and described ultraviolet lamp tube is axially installed along the photochemical catalysis plate.
9, optomagnetic waste disposal plant as claimed in claim 1 is characterized in that, described magnetizing assembly is the some magnet that are fixed in the main reactor.
10, a kind of optomagnetic sewage water treatment method is characterized in that, comprising:
Step 100, filtration sewage;
Step 200, in filtered sewage, be metered into hydrogen peroxide and sulfuric acid simultaneously, make it enter main reactor then;
Sewage in the step 300, main reactor in magnetic field, ultrasonic wave, ultraviolet light and TiO
2Effect is reacted down in the time of photocatalyst, makes by adding sulfuric acid during reaction that the pH value of sewage is controlled to be 3-4 in the main reactor.
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| US5130032A (en) * | 1989-10-10 | 1992-07-14 | Sartori Helfred E | Method for treating a liquid medium |
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| CN102120667A (en) * | 2010-01-11 | 2011-07-13 | 刘恩来 | Water treatment system with catalytic tower |
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| CN104370342A (en) * | 2014-11-19 | 2015-02-25 | 中国石油天然气股份有限公司 | Photocatalyst recovery device, organic waste water treatment method and organic waste water treatment device |
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| CN107226591A (en) * | 2017-07-21 | 2017-10-03 | 王兆国 | The organic wastewater treatment that a kind of utilization supercritical water is combined with photochemical catalytic oxidation |
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