CN107892419A - A kind of method of self-loopa microwave catalysis oxidation processing sewage - Google Patents

A kind of method of self-loopa microwave catalysis oxidation processing sewage Download PDF

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Publication number
CN107892419A
CN107892419A CN201711375971.4A CN201711375971A CN107892419A CN 107892419 A CN107892419 A CN 107892419A CN 201711375971 A CN201711375971 A CN 201711375971A CN 107892419 A CN107892419 A CN 107892419A
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catalyst
water
microwave
sewage
catalysis oxidation
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刘再亮
孟海玲
吴胜华
王雅萍
练建军
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Anhui University of Technology AHUT
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Anhui University of Technology AHUT
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Priority to CN201711375971.4A priority Critical patent/CN107892419A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/302—Treatment of water, waste water, or sewage by irradiation with microwaves
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281—Installations for water purification using chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C02F1/763—Devices for the addition of such compounds in gaseous form
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/14—Maintenance of water treatment installations

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The invention discloses a kind of method of self-loopa microwave catalysis oxidation processing sewage, belong to field for the treatment of of water pollution.This method carries out efficient microwave catalysis oxidation degradation of organic substances using powder catalyst excellent suspension, mobility and microwave catalysis oxidation characteristic in microwave reactor.The present invention retains the separation that powder catalyst and water are realized in pulse separator using waterpower of the original hydraulic pressure of elevator pump inside microwave reactor, using elevator pump current at a high speed flow through at water sprayer trunnion caused by negative pressure by after separation still with good fluidity powder catalyst suspension suck, mixed with sewage and continue cycling through use.The present invention not only microwave catalysis oxidation be swift in response, uniformly, thoroughly, reduce the dosage of fine catalyst and strong oxidizer, reduce processing cost, and realize efficiently separating for powder catalyst, recovery and self-loopa utilize, and processing and reuse for sewage provide a kind of new technology.

Description

A kind of method of self-loopa microwave catalysis oxidation processing sewage
Technical field
The invention belongs to field for the treatment of of water pollution, and in particular to a kind of side of self-loopa microwave catalysis oxidation processing sewage Method.
Background technology
Usually contain substantial amounts of suspension and organic pollution in sanitary sewage, and in trade effluent except containing suspension Outside thing and a small amount of organic pollution (BOD) easily degraded, generally also containing substantial amounts of heavy metal, cyanide, surface-active The pollutants such as agent, oils, polycyclic aromatic hydrocarbon, it is typically characterised by, and pollutant kind is various, toxicity is big, BOD/COD is low, COD contents High and difficult degradation.The processing mode that the processing for these difficult degradation sewage is combined frequently with physical chemistry+bioanalysis at present, Although the method can be handled by physical chemistry and remove most heavy metal, cyanide, suspension etc., the removal to COD Effect is poor, therefore subsequently further removes COD using bioanalysis.Due to the inevitable remaining portion of water after physical chemistry processing Dividing poisonous and hazardous material, these poisonous and hazardous materials will necessarily produce huge toxicity to the microorganism in biological treatment, Cause the death of microorganism, so that follow-up biological treatment is difficult to run well.And by table in these difficult degradation sewage COD caused by face activating agent, oils and polycyclic aromatic hydrocarbon etc. belongs to the organic matter of difficult degradation, though bioanalysis can play it is certain Effect, COD clearance cannot be guaranteed, and generally can not meet COD discharge standard requirement.
Chemical oxidization method can effectively remove COD, but traditional chemical oxidization method must add excessive strong oxidizing property Medicament (such as H2O2、ClO2、O3), and time-consuming (generally no less than 60min) for chemical oxidation, and pH value reacts bar often 3 or so Part is harsh.Catalysis oxidation can greatly facilitate the progress of oxidation reaction, can be obtained within the shorter reaction time very high COD removal efficiency, while reduce the consumption of oxidating chemicals, reduce processing cost.
Microwave applications are one of study hotspots in recent years in water pollution control.Microwave can penetrate water body, to water Material (catalyst) in body has selection heating property, under the irradiation of microwave, the surface-active point position (i.e. " heat of catalyst Point ") more than 1000 DEG C of high temperature is quickly risen to, the organic matter adsorbed around " focus " is decomposed by rapid oxidation.It is in addition, micro- The synergy of ripple and catalyst can also promote strong oxidizing property medicament to be rapidly decomposed into the free group with strong oxidizing property (such as Hydroxyl radical free radical, superoxide radical etc.), the effect of greatly facilitating is played in the oxidation to hardly degraded organic substance, makes catalysis oxidation anti- Should be rapid, uniform, thorough.
In the Chinese patent literature being disclosed at present, the processing that microwave technology is used for sewage is divided into two major classes：First Class be toward sewage in add " sensitizer " etc. and absorb material by microwave application or medicament by force, being sent into microwave reactor after being well mixed carries out thing The method and system of Physicochemical processing, compares typically Chinese patent literature CN101143736B, CN1187272C, CN1250747A etc., it is characterized in that the sensitizer added is disposable, cost is high and to deliquescent organic contamination Thing removal effect is very limited；Second class is that reaction column is set in microwave reactor middle position, and catalyst is put into reaction column, The method of microwave catalysis oxidation processing is carried out in the reaction column that sewage directly or is after pretreatment sent into microwave reactor and is set Standby, catalyst is built in reaction column, can be long-term use of, compare typically Chinese patent literature CN102381741A, CN1199887C, CN103159282B etc..At present, microwave catalysis oxidation technology has many advantages, such as quick, efficient, thus obtains Extensive research is arrived.Undoubtedly, the reaction column and the matched catalyst used for carrying out microwave catalysis oxidation are microwave catalysis The key of oxidation technology, although in published Chinese patent literature CN102381741A, CN1199887C, CN103159282B In report the process and apparatus of microwave catalysis oxidation processing sewage, but built-in reaction column is cylinder in these patents Body, catalyst buildup formula are loaded in reaction column.Problems with can so be produced：1) because the penetration capacity of microwave is limited, The reaction column diameter of cylinder can not be excessive, therefore limits the loadings of catalyst；2) because catalyst is stacked filling, Therefore the catalyst at reaction post jamb receives microwave irradiation first, and catalytic oxidation effect is preferable, and internal especially center The catalyst of position is often due to the decay of the penetration capacity finite sum microwave of microwave, cannot get sufficient microwave irradiation, thus The effect of catalysis oxidation can not be played；3) obviously, the catalyst of this stacked filling uses granular catalyst, and Powder catalyst can not be used, because fine catalyst particles are very small, weight is very light, is easily washed away by current, catalysis Agent losing issue is extremely serious；4) changed after catalyst poisoning inactivation difficult.Obviously, existing microwave catalysis oxidation technology is present Low the catalysis oxidation efficiency, catalyst loss, can not automatically update, run operating difficulties the shortcomings of, limit its extensive use.
Common powdered and granular activated carbon, or these activated carbons aoxidize as carrier to load metal and metal Thing all has the ability of strong absorption microwave radiation, and more than 1000 DEG C can be quickly formed in its surface point position through microwave radiation Hot conditions, the catalysis oxidation time is short, effect is good, and the activated carbon of activated carbon and carried metal is simple and easy to get, easy system It is standby, cheap, it is most common catalyst during microwave catalysis oxidation processing sewage.The applicant is in long-term research It was found that：In equal experimental condition (i.e. identical water quality, water, microwave power, microwave irradiation time, pH value of sewage water, catalyst Dosage etc.) under, powdered active carbon has the efficiency of higher catalyzing oxidizing degrading organic pollution than granular activated carbon.Its Reason is that powdered catalyst weight is light, particle diameter is smaller, specific surface area is bigger, after being added in sewage, can suspend It is thoroughly mixed to form highly uniform suspension with sewage in water.The ability that powder catalyst not only adsorbs pollutant is high, And more active " focuses " can be formed under microwave irradiation, adsorbed and close these " focuses " pollutants are immediately Decomposed by rapid oxidation.When adding oxidant (such as hydrogen peroxide, chlorine dioxide, ozone) in continuing toward sewage, due to powder Last shape catalyst, organic pollution, oxidant mixed in sewage it is highly uniform, therefore, under microwave action, powdered catalytic Agent can also greatly facilitate oxidant and resolve into active group (such as hydroxyl radical free radical, superoxide radical with strong oxidizing property Deng).Existing lot of documents shows that these advantages of powder catalyst are that pellet type catalyst can not compare.The application People also demonstrates the advantage of powdered active carbon during microwave catalysis oxidation degradable organic pollutant：Tested in identical Under the conditions of, the dosage ratio of powdered active carbon and oxidant (hydrogen peroxide) uses granular active carbon and oxidant (peroxide Change hydrogen) when reduce 7.5 times and 11.1 times respectively, although the dosage of powdered active carbon and oxidant (hydrogen peroxide) reduction Many times, but the efficiency of its degradable organic pollutant does not reduce, on the contrary than using granular active carbon and oxidant (mistake Hydrogen oxide) degradable organic pollutant it is more efficient.
But powder catalyst particle is small, in light weight, it is easy to be washed away by current, causes the loss of catalyst, recovery weight It is multiple to utilize difficulty.In conventional method, realizing the method for powder catalyst recovery has many kinds, such as gravity standing sedimentation, filtering The conventional methods such as pond filtering backwashes again, UF membrane, or but these methods are the difficult sedimentations of powder catalyst, recovering effect is not It is good, otherwise it is that structures and equipment are too many, occupation of land and investment are big, cost recovery is high, and it is limited to be built in microwave reactor Cavity size in.Meanwhile catalyst experienced cooling-heating-drop again during reclaiming and being fed again into microwave reactor Temperature-the change that heats again, causes the waste of microwave energy.If powder catalyst can be realized inside microwave reactor Separation, recovery and self-loopa use or shortened the flow of powder catalyst separation and recovery, do not have significant hypothermal also at it When auto recycling undoubtedly can be good at the key issue that solves this puzzlement microwave catalysis oxidation technology.In microwave reaction One waterpower retention pulse separator of increase is then a kind of extraordinary solution in device, and sewage is anti-by water pump feeding microwave After answering device, original hydraulic pressure caused by water pump is made full use of to realize powder catalyst in waterpower retention pulse separator Separate and reclaim, the water after separating catalyst can directly discharge or reuse.
On the other hand, how automatic back flow mixes the powder catalyst after separation to the porch of microwave reactor with sewage Close, keep having a certain amount of catalyst in microwave reactor, it is crucial to continue catalytic oxidation.According to the work of water sprayer Make principle, when the water outlet of water pump flows quickly through the trunnion of water sprayer, negative pressure can be formed at trunnion, therefore fluid can be inhaled Enter.Because powder catalyst can keep good suspension in water body, good flowing properties, therefore can be by it Good mobile performance, the still powder catalyst with good flowability characteristics after separation is incorporated into by water sprayer by pipeline Hole is added at trunnion, is mixed with sewage, thus by water sprayer the powder catalyst after separation can be realized micro- Automatic cycle in ripple reactor.
Because waterpower retention pulse separator, self-circulation pipeline and water sprayer are built in inside microwave reactor, urge Agent under the irradiation in microwave, does not undergo the cooling of traditional approach-heating-change for cooling again-heating again, therefore all the time Save very much.Furthermore it is possible to realize catalyst being automatically separated in microwave reactor and circulate, catalyst is further increased Residence time in microwave reactor, it necessarily can further improve the efficiency of microwave catalysis oxidation degradable organic pollutant.
The content of the invention
For overcome the deficiencies in the prior art, the technical problem to be solved in the present invention is to provide a kind of self-loopa microwave catalysis oxygen Change the method for processing sewage, to realize efficiently separating for powder catalyst, recovery and self-loopa utilize.
In order to solve the above technical problems, a kind of method of self-loopa microwave catalysis oxidation processing sewage disclosed by the invention, Comprise the following steps：
1) add basic agent and carry out Pre-coagulation in premixing pond with sewage, the supernatant after preformed precipitate pond is handled Flow into main mixing pit and dosing coagulant carries out main coagulation, then intermediate pool is sent into after primary precipitate pond, filtering ponds processing.
2) the interior progress of feeding microwave reactor is micro- after the water of the intermediate pool adds acid for adjusting pH value and adds strong oxidizer Ripple catalytic oxidation treatment, the separation of sewage and catalyst is carried out through waterpower retention pulse separator in the microwave reactor, Water after separation is sent into clear water reserviors discharge or reuse, the water-jet in catalyst automatic cycle to the microwave reactor after separation Mixed at device and with sewage, continue microwave catalysis oxidation processing.
3) the periodically anti-waterpower retention pulse separator being sent into the microwave reactor of the water of the clear water reserviors carries out arteries and veins Rush backwash, catalyst is sent into catalyst inventory pond through pulse backwashing discharging valve during pulse backwashing；Mend in the catalyst inventory pond New catalyst is filled to be sent into microwave reactor；In the microwave reactor catalyst of inactivation through decaying catalyst discharging valve outside Row.
In the waterpower retention pulse separator, sewage and fine catalyst are evenly distributed to each water inlet branch through water inlet manifold Be sent into after pipe inside waterpower retention pulse separator, the end mouth of pipe of water inlet pipe be located at filter cylinder outer grid and guide shell it Between, filter cylinder surface is washed away in the water outlet of water inlet pipe in a manner of tangent line washes away, and under the effect of the pressure, clear water order passes through outer lattice Net, filter cloth (film) and interior grid enter cartridge interior, are discharged through outlet pipe, and fine catalyst is then trapped within filter cloth (film) Surface, the mixed liquor of fine catalyst flow back through catalyst return duct；With the progress of separation, when waterpower retains pulse separator Pulse backwashing being carried out when internal pressure exceedes certain numerical value or periodically, pulse backwashing water enters cartridge interior by outlet pipe, Interior grid, filter cloth (film), outer grid are sequentially passed through again, and the fine catalyst retained on filter cloth (film) is sprung back over into fine catalyst Mixed liquor main body, discharged through catalyst return duct.
Further, the basic agent is NaOH, milk of lime or pulverized limestone, and the regulation of its dosage is pre-mixed the pH in pond It is worth to 10~12.
Further, the coagulant is aluminium polychloride, aluminium chloride, bodied ferric sulfate or ferrous sulfate, and it is thrown Dosage adjusts pH value in main mixing pit to 6.5~8.5.
Further, the water of the intermediate pool adds acid for adjusting pH value to 3~7.
Further, the strong oxidizer is hydrogen peroxide, chlorine dioxide or ozone.
Further, the powder catalyst be powdered active carbon, its particle diameter be 18~200 mesh.
The present invention makes its suspension using powder catalyst excellent suspension, mobility and microwave catalysis oxidation characteristic The suspension being well mixed is formed in water body and with sewage, fully plays the spy of its characterization of adsorption and microwave catalysis oxidation Property.It is anti-in microwave using original hydraulic pressure of elevator pump using waterpower retention pulse separator after the completion of microwave catalysis oxidation process The separation that catalyst and water are realized inside device is answered, the powder catalyst after separation is sent into microwave reactor porch by pipeline Water sprayer trunnion at, flowed through using current at water sprayer trunnion at a high speed caused by negative pressure still having after separation is good The powder catalyst suspension suction of mobility, and continue to mix with sewage, realized in the microwave reactor of limited volume The efficiently separating of powder catalyst, recovery and self-loopa recycling, overcome traditional catalyst separation, recovery and again It is multiple to utilize the shortcomings faced.
Compared with prior art, the invention has the advantages that：
1) the efficiently separating of catalyst is realized in the limited volume of microwave reactor, is reclaimed and auto recycling；
2) go the efficiency high of removing heavy metals, suspension, organic pollution, can by sewage disposal to discharge or reuse will Ask；
3) especially suitable for using powder catalyst, microwave catalysis oxidation is swift in response, uniformly, thoroughly, reduces and urges The dosage of agent and strong oxidizer, reduces processing cost；
4) reaction time is short, and the present invention is 1min~10min the actual microwave catalysis oxidation time, is urged far below traditional Oxidation is no less than 60min needs.
Brief description of the drawings
Fig. 1 is self-loopa microwave catalysis oxidation sewage treatment method and schematic device (the first embodiment party of the present invention Formula).
Fig. 2 is self-loopa microwave catalysis oxidation sewage treatment method and schematic device (second of embodiment party of the present invention Formula).
Fig. 3 is self-loopa microwave catalysis oxidation sewage treatment method and schematic device (the third embodiment party of the present invention Formula).
Fig. 4 is self-loopa microwave catalysis oxidation reactor floor map of the present invention.
Fig. 5 is the waterpower retention pulse separator equipment schematic diagram of the present invention.
Fig. 6 is Fig. 5 1-1 views.
Fig. 7 is Fig. 5 2-2 views.
Marked in figure：1st, it is pre-mixed pond；2nd, basic agent throwing device；3rd, preformed precipitate pond；4th, main mixing pit；5th, coagulant Throwing device；6th, primary precipitate pond；7th, filtering ponds；8th, acid solution throwing device；9th, strong oxidizer throwing device；10th, microwave generator； 11st, intermediate pool；12nd, elevator pump；13rd, pressure gauge；14th, water sprayer；15th, microwave reactor；16th, Cyclonic reactor；17th, it is unidirectional Valve, 18, catalyst make-up valve；19th, catalyst make-up pump；20th, catalyst inventory pond；21st, pulse backwashing pump；22nd, clear water reserviors； 23rd, pulse backwashing valve；24th, clear water reserviors water intaking valve；25th, decaying catalyst discharging valve；26th, waterpower retention pulse separator；26-1、 Water inlet manifold；26-2, water inlet pipe；26-3, outlet pipe；26-4, housing；26-5, guide shell；26-6, catalyst return duct； 26-7, end cover；26-8, filter cylinder；26-9, handle；26-10, outer grid；26-11, filter cloth (film)；26-12, interior grid； 26-13, hollow fastening thread pipe；27th, pulse backwashing catalyst discharging valve.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment 1
Accompanying drawing 1 is referred to, a kind of self-loopa microwave catalysis oxidation disclosed by the invention handles the device of sewage, including：Alkalescence The outlet of medicament addition device 2 is connected to the water inlet end in premixing pond 1, and the outlet of basic agent throwing device 2 is also connected to clearly The water inlet in pond 22；The water outlet in the premixing pond 1 is connected to the water inlet of preformed precipitate pond 3；The water outlet in the preformed precipitate pond 3 connects It is connected to the water inlet of main mixing pit 4；The outlet of coagulant dosage device 5 is connected to the water inlet of the main mixing pit 4；The master The water outlet of mixing pit 4 is connected to the water inlet in primary precipitate pond 6；The water outlet in the primary precipitate pond 6 is connected to the water inlet of filtering ponds 7 Mouthful；The water outlet of the filtering ponds 7 is connected to the water inlet of intermediate pool 11；The water outlet of the intermediate pool 11 passes through elevator pump 12 It is connected to the water inlet of water sprayer 14, the outlet of acid solution throwing device 8 is connected on the pipeline before the elevator pump 12, strong oxygen The outlet of agent throwing device 9 is connected on the pipeline after the elevator pump 12, and pressure gauge 13 is arranged on the elevator pump 12 Between the water sprayer 14；The water outlet of the water sprayer 14 is connected to the water inlet of Cyclonic reactor 16；The cyclone reaction The water outlet of device 16 is connected to the water inlet of waterpower retention pulse separator 26；The water outlet warp of the waterpower retention pulse separator 26 Clear water reserviors water intaking valve 24 is connected to the water inlet of clear water reserviors 22, and the clear water reserviors 22 are provided with Chinese effluent mouth；Pulse backwashing valve 23 In parallel with the clear water reserviors water intaking valve 24, the pulse backwashing valve 23 is arranged at the waterpower retention pulse separator 26 and pulse On pipeline between backwashing pump 21, the catalyst separating opening of the waterpower retention pulse separator 26 is connected to institute through check valve 17 State the trunnion suction inlet of water sprayer 14；The water sprayer 14, Cyclonic reactor 16, check valve 17, waterpower retention pulse separator 26 connected by pipeline after be built in the microwave reactor 15；The waterpower retention pulse separator 26 and the check valve Decaying catalyst delivery pipe and the outer comb of pulse backwashing catalyst are connect on pipeline between 17 and passes the microwave reactor 15 Cavity outside, and decaying catalyst drain valve 25 and pulse backwashing catalyst discharging valve 27 are set respectively, the pulse backwashing is urged The other end of agent discharging valve 27 is connected to the water inlet in catalyst inventory pond 20, the delivery port warp in the catalyst inventory pond 20 Catalyst make-up pump 19 is connected on the pipeline between the check valve 17 and the water sprayer 14.Microwave generator 10 passes through ripple Conduit is connected to the waveguide mouth of the microwave reactor 15.
Accompanying drawing 5, sewage and fine catalyst is referred to send after water inlet manifold 26-1 is evenly distributed to each water inlet pipe 26-2 Enter inside waterpower retention pulse separator, the water inlet pipe 26-2 end mouth of pipe be located at filter cylinder (26-8) outer grid 26-10 and Between guide shell 26-5, filter cylinder (26-8) surface is washed away in water inlet pipe 26-2 water outlet in a manner of tangent line washes away, in pressure Under effect, clear water order enters cartridge interior by outer grid 26-10, filter cloth (film) 26-11 and interior grid 26-12, through going out Water pipe 26-3 is discharged, and fine catalyst is then trapped within filter cloth (film) 26-11 surface, and the mixed liquor of fine catalyst is through catalysis Agent return duct 26-6 flows back.With the progress of separation, when the pressure inside waterpower retention pulse separator exceedes certain numerical value Or pulse backwashing is periodically carried out, pulse backwashing water enters filter cylinder (26-8) inside by outlet pipe 26-3, then sequentially passes through interior lattice 26-12, filter cloth (film) 26-11, outer grid 26-10 are netted, the fine catalyst retained on filter cloth (film) 26-11 is sprung back over into powder Catalyst mixed liquid main body, discharged through catalyst return duct 26-6.
It is pre- using the above method and plating of the equipment processing containing pollutants such as plurality of heavy metal, surfactant and oils Waste water is handled, this is illustrated with reference to the functional characteristics of each several part, control parameter and microwave catalysis oxidation effect in the present invention The advantage of invention：
1) basic agent throwing device feeding lime breast and control premixing pond in pH value be 10~12, by solubilised state The hydroxide that heavy metal ion forms metal is deposited in removal in preformed precipitate pond；
2) it is 6.5~8.5 that coagulant dosage device, which adds bodied ferric sulfate and controls the pH value in main mixing pit, and its is main Function one is readjustment water pH value, second, part COD and oily substance are removed by coagulation, third, further removing preformed precipitate pond Remaining suspension in water outlet, a small amount of suspension carried secretly in the water outlet of primary precipitate pond are further removed by filtering ponds, obtain compared with The limpid middle water for still having certain content dissolubility COD；
3) pH value of acid adding regulation intermediate pool is 3, and optimal pH conditions are provided for microwave catalysis oxidation；
4) strong oxidizer is added to improve the effect of microwave catalysis oxidation, it is corresponding during using 200 mesh powdered active carbon Control strong oxidizer throwing device adds the hydrogen peroxide 1.5L/m of 30% concentration3Sewage, lived using 1.2 × 5mm of φ graininess Property charcoal when corresponding control strong oxidizer throwing device add the hydrogen peroxide 17L/m of 30% concentration3Sewage；
5) carry out sponsoring the COD that oxidation removes difficult degradation in microwave catalysis oxidation reactor, while realize and urge The separation and self-loopa of agent, it is 400W to control the power of microwave generator 4, is handled in microwave reactor through microwave irradiation 4min, the granular active carbon of the Powdered Activated Carbon of supported copper and supported copper carries out pair of catalytic oxidation effect in microwave reactor Than its dosage is respectively 1.6Kg/m3Sewage and 12Kg/m3Sewage；
6) readjustment pH to 6.5~8.5 in clear water reserviors, standard water discharge discharge or reuse.
After testing, electroplate pretreated waste water raw water and it is processed by the invention after every water quality parameter of water (clear water reserviors) see Following table：
Embodiment 2
Using the tail water of the method and apparatus processing domestic sewage factory in accompanying drawing 2, with reference to each several part in the present invention Functional characteristics, control parameter and catalytic oxidation effect come illustrate the present invention advantage：
1) due to being practically free of exceeded heavy metal in the tail water of domestic sewage factory, therefore pond and preformed precipitate pond are pre-mixed Without setting, and only retain the suspension that main mixing pit and primary precipitate pond is gone in water removal, make sewage into microwave catalysis Become limpider before oxidation reactor；
2) it is 6.5~8.5 that coagulant dosage device, which adds bodied ferric sulfate and controls the pH value in main mixing pit, and its is main Function one is readjustment water pH value, second, removing the suspension in sewage by coagulation, that is carried secretly in the water outlet of primary precipitate pond is a small amount of Suspension is further removed by filtering ponds, obtains the limpider middle water for still having certain content dissolubility COD；
3) pH value of acid adding regulation intermediate pool is 3, and optimal pH conditions are provided for microwave catalysis oxidation；
4) strong oxidizer is added to improve the effect of microwave catalysis oxidation, it is corresponding during using 200 mesh powdered active carbon Control strong oxidizer throwing device adds the hydrogen peroxidase 10 .3L/m of 30% concentration3Sewage, lived using 1.2 × 5mm of φ graininess Property charcoal when corresponding control strong oxidizer throwing device add the hydrogen peroxide 1.5L/m of 30% concentration3Sewage；
5) carry out sponsoring the COD that oxidation removes difficult degradation in microwave catalysis oxidation reactor, while realize and urge The separation and self-loopa of agent, it is 400W to control the power of microwave generator 4, is handled in microwave reactor through microwave irradiation 4min, the granular active carbon of the Powdered Activated Carbon of supported copper and supported copper carries out pair of catalytic oxidation effect in microwave reactor Than its dosage is respectively 1Kg/m3Sewage and 8Kg/m3Sewage；
6) readjustment pH to 6.5~8.5 in clear water reserviors, standard water discharge discharge or reuse.
After testing, the tail water of domestic sewage factory and it is processed by the invention after every water quality parameter of water (clear water reserviors) see below Table：
Embodiment 3
Using two the settling out water after biochemical treatment of the method and apparatus Treatment of Wastewater in Coking in accompanying drawing 2, with reference to this In invention the functional characteristics of each several part, control parameter and catalytic oxidation effect come illustrate the present invention advantage：
1) due to coking chemical waste water two settling out exceeded heavy metal is practically free of in water after biochemical treatment, therefore premix Pond and preformed precipitate pond are closed without setting, and only retains the suspension that main mixing pit and primary precipitate pond is gone in water removal, makes sewage Become limpider before microwave catalysis oxidation reactor is entered；
2) it is 6.5~8.5 that coagulant dosage device, which adds bodied ferric sulfate and controls the pH value in main mixing pit, and its is main Function one is readjustment water pH value, second, removing the suspension in sewage by coagulation, that is carried secretly in the water outlet of primary precipitate pond is a small amount of Suspension is further removed by filtering ponds, obtains the limpider middle water for still having certain content dissolubility COD；
3) pH value of acid adding regulation intermediate pool is 3, and optimal pH conditions are provided for microwave catalysis oxidation；
4) strong oxidizer is added to improve the effect of microwave catalysis oxidation, it is corresponding during using 200 mesh powdered active carbon Control strong oxidizer throwing device adds the hydrogen peroxidase 10 .9L/m of 30% concentration3Sewage, lived using 1.2 × 5mm of φ graininess Property charcoal when corresponding control strong oxidizer throwing device add the hydrogen peroxide 10L/m of 30% concentration3Sewage；
5) carry out sponsoring the COD that oxidation removes difficult degradation in microwave catalysis oxidation reactor, while realize and urge The separation and self-loopa of agent, it is 400W to control the power of microwave generator 4, is handled in microwave reactor through microwave irradiation 4min, the granular active carbon of the Powdered Activated Carbon of supported copper and supported copper carries out pair of catalytic oxidation effect in microwave reactor Than its dosage is respectively 2Kg/m3Sewage and 15Kg/m3Sewage；
6) readjustment pH to 6.5~8.5 in clear water reserviors, standard water discharge discharge or reuse.
After testing, coking chemical waste water after biochemical treatment two settle out water and it is processed by the invention after water (clear water reserviors) it is each Item water quality parameter see the table below：
Embodiment 4
Phenolic waste water is handled using the method and apparatus in accompanying drawing 3, with reference to the functional characteristics of each several part in the present invention, Control parameter and catalytic oxidation effect illustrate the advantage of the present invention：
1) due to being practically free of exceeded heavy metal in phenolic waste water, therefore premixing pond and preformed precipitate pond need not be set Put, and only retain the suspension that main mixing pit and primary precipitate pond is gone in water removal, make sewage anti-into microwave catalysis oxidation Answer becomes limpider before device；
2) it is 6.5~8.5 that coagulant dosage device, which adds bodied ferric sulfate and controls the pH value in main mixing pit, and its is main Function one is readjustment water pH value, second, removing the suspension in sewage by coagulation, that is carried secretly in the water outlet of primary precipitate pond is a small amount of Suspension is further removed by filtering ponds, obtains the limpider middle water for still having certain content dissolubility COD；
3) pH value of acid adding regulation intermediate pool is 3, and optimal pH conditions are provided for microwave catalysis oxidation；
4) strong oxidizer is added to improve the effect of microwave catalysis oxidation, it is corresponding during using 200 mesh powdered active carbon Control strong oxidizer throwing device adds the hydrogen peroxidase 10 .4L/m of 30% concentration3Sewage, lived using 1.2 × 5mm of φ graininess Property charcoal when corresponding control strong oxidizer throwing device add the hydrogen peroxide 2L/m of 30% concentration3Sewage；
5) carry out sponsoring the COD that oxidation removes difficult degradation in microwave catalysis oxidation reactor, while realize and urge The separation and self-loopa of agent, it is 400W to control the power of microwave generator 4, is handled in microwave reactor through microwave irradiation 4min, the granular active carbon of the Powdered Activated Carbon of supported copper and supported copper carries out pair of catalytic oxidation effect in microwave reactor Than its dosage is respectively 0.8Kg/m3Sewage and 3Kg/m3Sewage；
6) readjustment pH to 6.5~8.5 in clear water reserviors, standard water discharge discharge or reuse.
After testing, phenolic waste water and it is processed by the invention after every water quality parameter of water (clear water reserviors) see the table below：
From above-mentioned embodiment, a kind of self-loopa microwave catalysis oxidation sewage treatment method disclosed by the invention With equipment significant effect, with the obvious advantage, by plating pretreated waste water, the tail water of domestic sewage factory, coking chemical waste water through biochemistry Two after processing settle out water and phenolic waste water front and rear water quality parameter contrast processed by the invention, and present invention is particularly suitable for use Powdered catalyst, less fine catalyst and strong oxidizer dosage not only create efficient microwave catalysis oxidation effect Fruit, and can realize that the separation, recovery and self-loopa of powder catalyst use.
Above is the method and apparatus that the present invention is general, its original operation principle are：Make full use of powder catalyst In light weight, particle diameter is small, and specific surface area is big, and the characteristic of the suspension of good fluidity can be formed after being mixed with sewage, plays it Efficient characterization of adsorption, and then numerous " focus " is formed during microwave catalysis oxidation, it will adsorb near " focus " Organic pollution rapid oxidation decompose, while the presence of these numerous " focuses " also improve strong oxidizer use effect Rate, that is, a small amount of powder catalyst and a small amount of strong oxidizer are added, remain to obtain higher microwave catalysis oxidation and degrade to have The efficiency of machine thing, and be swift in response, uniformly, thoroughly；On the other hand, the present invention utilizes original caused by elevator pump conveying sewage There are the separation and recovery that hydraulic pressure realizes powder catalyst in waterpower retention pulse separator, the present invention is also with elevator pump Conveying sewage flows quickly through negative pressure caused by water sprayer trunnion, will be still powdered with good flowability characteristics after separation Catalyst is drawn at trunnion, is sufficiently mixed with sewage, continues auto recycling, it is not necessary to extra power consumption, The present invention not only saves, and separation, recovery and the self-loopa significant effect of catalyst.
Although above-mentioned combination accompanying drawing has carried out clearly citing description to the preferred embodiment of the inventive method and equipment, The present invention is not limited to above-mentioned embodiment, for one of ordinary skill in the art, in foregoing invention On the basis of or enlightenment under, many various forms of changes or variation can also be made, it is clear that these changes are changed still in this Within the protection domain of invention.

Claims (6)

  1. A kind of 1. method of self-loopa microwave catalysis oxidation processing sewage, it is characterised in that comprise the following steps：
    (1) add basic agent and Pre-coagulation is carried out in premixing pond (1) with sewage, it is upper after preformed precipitate pond (3) are handled Clear liquid is flowed into main mixing pit (4) and dosing coagulant carries out main coagulation, then is sent after primary precipitate pond (6), filtering ponds (7) processing Enter intermediate pool (11)；
    (2) the interior progress of feeding microwave reactor (15) is micro- after the water of intermediate pool (11) adds acid for adjusting pH value and adds strong oxidizer Ripple catalytic oxidation treatment, point of pulse separator (26) progress sewage and catalyst is retained through waterpower in microwave reactor (15) From the water after separation is sent into clear water reserviors (22) discharge or reuse, the catalyst automatic cycle after separation to microwave reactor (15) At the trunnion of interior water sprayer (14), and mixed with sewage and continue microwave catalysis oxidation processing；
    (3) the waterpower retention pulse separation that the water of clear water reserviors (22) is instead sent into by pulse backwashing pump (21) in microwave reactor (15) Device (26) carries out pulse backwashing, and powder catalyst is sent into catalyst inventory pond through pulse backwash valve (23) during pulse backwashing (20)；Catalyst inventory pond (20) supplements the larynx for the water sprayer (14) that new powder catalyst is sent into microwave reactor (15) At pipe；The powder catalyst of inactivation is arranged outside through decaying catalyst discharging valve (25) in microwave reactor (15)；
    In the waterpower retention pulse separator (26), sewage and fine catalyst are evenly distributed to each through water inlet manifold (26-1) Water inlet pipe (26-2) is sent into inside waterpower retention pulse separator afterwards, and the end mouth of pipe of water inlet pipe (26-2) is located at filter cylinder Between the outer grid (26-10) and guide shell (26-5) of (26-8), the water outlet of water inlet pipe (26-2) is in a manner of tangent line washes away Wash away filter cylinder (26-8) surface, under the effect of the pressure, clear water order by outer grid (26-10), filter cloth (film) (26-11) and Interior grid (26-12) enters filter cylinder (26-8) inside, is discharged through outlet pipe (26-3), and fine catalyst is then trapped within filter cloth The surface of (film) (26-11), the mixed liquor of fine catalyst flow back through catalyst return duct (26-6)；With the progress of separation, Carry out when the internal pressure of waterpower retention pulse separator (26) exceedes certain numerical value or periodically pulse backwashing, pulse backwashing water It is internal that filter cylinder (26-8) is entered by outlet pipe (26-3), then sequentially passes through interior grid (26-12), filter cloth (film) (26-11), outer Grid (26-10), the fine catalyst retained on filter cloth (film) (26-11) is sprung back over into fine catalyst mixed liquor main body, passed through Catalyst return duct (26-6) is discharged.
  2. 2. the method for self-loopa microwave catalysis oxidation processing sewage as claimed in claim 1, it is characterised in that the alkaline medicine Agent is NaOH, milk of lime or pulverized limestone, the pH value in its dosage regulation premixing pond (1) to 10~12.
  3. 3. the method for self-loopa microwave catalysis oxidation processing sewage as claimed in claim 1, it is characterised in that the coagulant Aluminium polychloride, aluminium chloride, bodied ferric sulfate or ferrous sulfate, its dosage adjust pH value in main mixing pit to 6.5~8.5.
  4. 4. the method for self-loopa microwave catalysis oxidation processing sewage as claimed in claim 1, it is characterised in that the middle water The water in pond (11) adds acid for adjusting pH value to 3~7.
  5. 5. the method for self-loopa microwave catalysis oxidation processing sewage as claimed in claim 1, it is characterised in that the Strong oxdiative Agent is hydrogen peroxide, chlorine dioxide or ozone.
  6. 6. the method for self-loopa microwave catalysis oxidation processing sewage as claimed in claim 1, it is characterised in that described powdered Catalyst is powdered active carbon, its particle diameter is 18~200 mesh.
CN201711375971.4A 2017-12-19 2017-12-19 A kind of method of self-loopa microwave catalysis oxidation processing sewage Pending CN107892419A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111320331A (en) * 2020-03-25 2020-06-23 神美科技有限公司 Coking wastewater treatment method
CN111517539A (en) * 2020-04-02 2020-08-11 中广核环保产业有限公司 Treatment method of high-concentration high-ammonia nitrogen organic sewage
CN116492848A (en) * 2023-06-27 2023-07-28 广州汉至蓝能源与环境技术有限公司 Fermentation liquor component extraction device and method with membrane separation structure

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Publication number Priority date Publication date Assignee Title
CN2343155Y (en) * 1998-08-19 1999-10-13 程洪涛 Water purifier
CN104707551A (en) * 2015-02-28 2015-06-17 北京科益创新环境技术有限公司 Microwave fluidization reaction device and method for processing benzol and derivatives of benzol
CN105194914A (en) * 2015-10-26 2015-12-30 广东海洋大学 Water purifying device taking powder as filter element
CN105948348A (en) * 2016-07-11 2016-09-21 中国科学院电子学研究所 Equipment and method for sewage treatment by microwave energy

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2343155Y (en) * 1998-08-19 1999-10-13 程洪涛 Water purifier
CN104707551A (en) * 2015-02-28 2015-06-17 北京科益创新环境技术有限公司 Microwave fluidization reaction device and method for processing benzol and derivatives of benzol
CN105194914A (en) * 2015-10-26 2015-12-30 广东海洋大学 Water purifying device taking powder as filter element
CN105948348A (en) * 2016-07-11 2016-09-21 中国科学院电子学研究所 Equipment and method for sewage treatment by microwave energy

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111320331A (en) * 2020-03-25 2020-06-23 神美科技有限公司 Coking wastewater treatment method
CN111517539A (en) * 2020-04-02 2020-08-11 中广核环保产业有限公司 Treatment method of high-concentration high-ammonia nitrogen organic sewage
CN116492848A (en) * 2023-06-27 2023-07-28 广州汉至蓝能源与环境技术有限公司 Fermentation liquor component extraction device and method with membrane separation structure
CN116492848B (en) * 2023-06-27 2023-09-05 广州汉至蓝能源与环境技术有限公司 Fermentation liquor component extraction device and method with membrane separation structure

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