CN102603103A - Complex heavy-metal waste water emergency quick treatment method - Google Patents
Complex heavy-metal waste water emergency quick treatment method Download PDFInfo
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- CN102603103A CN102603103A CN2012101029879A CN201210102987A CN102603103A CN 102603103 A CN102603103 A CN 102603103A CN 2012101029879 A CN2012101029879 A CN 2012101029879A CN 201210102987 A CN201210102987 A CN 201210102987A CN 102603103 A CN102603103 A CN 102603103A
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- 238000000034 method Methods 0.000 title claims abstract description 21
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- 230000016615 flocculation Effects 0.000 claims abstract description 27
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
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Abstract
The invention relates to a complex heavy-metal waste water emergency quick treatment method, comprising the following steps of: filtering by a sand filter; mixing by a high-speed pump; carrying out an ultraviolet catalyzing ozone reaction; carrying a microwave catalyzing active carbon reaction; carrying micro-electrolytic reaction; circulating waste water; carrying out a Fenton reaction; carrying out electric flocculation on an aluminum electrode plate; and pressing and filtering sludge. Waster water in a circulating slot is pumped into an iron carbon fluidized bed by a fluidizing pump to be circularly treated; an air compressor is connected with the iron carbon fluidized bed and prevents a filler in the iron carbon fluidized bed from blocking; and the microwave active carbon reactor is an active carbon filling tower, and a microwave emitter is arranged outside the body of the active carbon filling tower. The complex heavy-metal waste water emergency quick treatment method disclosed by the invention is used for treating the complex heavy-metal waste water, associated devices are simple, easy, quick, can meet an emergency, and can update and convert, no various chemical raw materials are fed, and various complex heavy-metal waste water with unknown elements can be quickly treated as long as the current magnitude is regulated, and thus the heavy metal in the waste water and chemical oxygen demand can immediately reach the standard and are discharged.
Description
Technical field
The present invention relates to WWT, environmental protection technical field, particularly relate to the emergent immediate processing method of a kind of complicated heavy metal wastewater thereby.
Background technology
Current, environment, resource, population become the three big subject matters that the world faces, the deterioration degree of global environment and day sharp increase, and the survival and development to human society cause serious threat.Along with electronics, plating, wiring board, household electrical appliances are disassembled the development disorder of industry, heavy metal contamination is serious day by day, and sudden heavy metal contamination incident increases year by year, China's soil, river, agriculture prodn and people's health is caused very big harm.In want urgent solution problem is listed heavy metal contamination by government.
Heavy metal contamination has persistence, diffustivity, enriching characteristics:
(1) persistence: it is nondegradable, can in soil, have hundreds and thousands of years.
(2) diffustivity: it can be along with surface water, Groundwater Flow and by local diffusion to wider scope.
(3) enriching: no matter in the water or the heavy metal in the soil, all can finally get into human body, cause lasting harm to human health along food chain to the high-end enrichment of biologic chain.
Both at home and abroad to the improvement of mixture-metal waste water, the technology that extensively adopts is a chemical method at present, and it is in waste water, to add a large amount of alkaline chemicals, makes heavy metal form heavy metal oxide and from waste water, is precipitated out.This method has had decades historical, technology maturation, and heavy metal removing rate is higher.But in service in reality, three obstacles are but arranged:
1, best deposition pH does not cover mutually, and these heavy metal hydroxides all have amphoteric character in various degree, and best deposition pH objectionable intermingling is so pH is regulated in necessary batch treatment respectively.
2, the difficult deposition of colloid: some heavy metal hydroxide is a kind of colloid in essence, is difficult to clarification, therefore, must add flocculation agent and regulate best pH.
3, have only non-solvay-type metals ion could produce the heavy metal hydroxide deposition, in production practice, the heavy metal ion in this mixed type waste water all is solvay-type more than 75%, must just can make metals ion generate precipitation of hydroxide through the contact break reaction.For prussiate type complex compound, often adopt the two-stage oxidation method, to EDTA type complex compound, then must adopt the highly basic method.
More than three big problems, make whole waste water treatment process very complicated, repeatedly regulate pH, repeatedly add different oxygenants, acid, alkali and flocculation agent and repeatedly clarify.So the entire equipment robot control system(RCS) is complicated, cause investment big, take up an area of greatly, a series of problems such as not removable, running cost height.
Summary of the invention
Technical problem to be solved by this invention is: overcome the robot control system(RCS) that the heavy metal containing wastewater treatment technology of prior art adopts complicated, cause investment big, take up an area of greatly, not removable, defective that running cost is high; A kind of complicated heavy metal wastewater thereby immediate processing method of meeting an urgent need is provided; The emergent immediate processing method of this complicated heavy metal wastewater thereby embodies through corresponding equipment; Its corresponding equipment has simple and easy quick, emergent and three kinds of functions of upgrade conversion; It need not to drop into multiple industrial chemicals; Only need to regulate size of current, promptly can handle the heavy metal wastewater thereby of the not clear component of various complicacies apace, make heavy metal and the COD qualified discharge immediately in the waste water.
The technical solution adopted for the present invention to solve the technical problems is: the complicated heavy metal wastewater thereby immediate processing method of meeting an urgent need comprises the following steps: according to array of procedures
⑴, sand-bed filter filter, and the waste water that will contain complicated heavy metal is sent into sand-bed filter and carried out filtration treatment, and macrobead foreign material in the elimination waste water improve the waste water transparency, are beneficial to follow-up UV-irradiation;
⑵, high-speed pump mix, and high-speed pump produces the mixing bubble of micro/nano level ozone and oxygen, from forming the reaction contact area of hundred times of ground increase ozone and oxygen and waste water with ozone, oxygen with from the waste water mixed at high speed of step ⑴;
⑶, ultraviolet catalytic ozone reaction, the ultraviolet catalytic ozone reaction carries out in the UV-light ozone reactor, produces UV-light with microwave-excitation, and under UV-irradiation, the part ozone in the waste water is produced hydroxyl radical free radical by catalysis from the waste water of step ⑵;
⑷, the reaction of microwave catalysis activated carbon; The microwave catalysis activated carbon is reflected in the microwave activity carbon reactor and carries out; With unreacted ozone and pollutent in the waste water of activated carbon adsorption from step ⑶; Use the microwave catalysis activated carbon, make activated carbon regeneration, and the reaction of unreacted ozone and pollutent is constantly carried out;
More than reacting the effect that will reach is: making in the waste water is become exposed elemental metals ion by the heavy metal ion of complex compound complexing;
⑸, micro-electrolysis reaction, micro-electrolysis reaction carries out on iron carbon fluidized-bed, is the monomer heavy metal from having been separated out in the micro-electrolysis reaction process by exposed heavy metal ion in the waste water of step ⑷;
⑹ the circulation of, waste water through in the process of circulation groove, can sedimentation remove the particle that de-iron carbon fluidized-bed is taken out of from the waste water of step ⑸, and the impeller of pump is cavitated in the time of preventing the fluidisation pump depletion again, protection fluidisation pump;
⑺, Fenton's reaction; Fenton's reaction carries out in Fenton reactor; Hydrogen peroxide is added in the Fenton reactor; Hydrogen peroxide with from the waste water of step ⑹ with get into Fenton reactor from the filtrating of step ⑼ and carry out Fenton's reaction, further decompose prussiate and other complex compound type organic in the waste water, reduce the COD of waste water;
⑻, the flocculation of aluminum electrode plate electricity; The flocculation of aluminum electrode plate electricity is carried out in electric flocculator-settler; According to regulating need hydrogen peroxide, acid, alkali, SEPIGEL 305 being joined in the electric flocculator-settler of waste water ph; To regulate from the waste water of step ⑺, the pH value is adjusted under 7～8 conditions, the Fe in the waste water
++And Fe
+++Generate the Fe-Al composite flocculation agent, make waste water obtain clarification;
⑼, sludge press filtration, sludge press filtration carry out in pressure filter, and the mud that step ⑻ discharges press dry into mud cake through pressure filter and discharges, and the backspace step ⑺ re-treatment of will filtrating.
Above-mentioned each step required equipment all is combined on the steelframe chassis, can whole handling, place on-the-spotly, and the water flowing energising can be used.
Further, in said step ⑹, the waste water in the circulation groove pumps into the described iron carbon of step ⑸ fluidized bed circulation through the fluidisation pump and handles.
Further, in said step ⑸, the equipment that relates to also comprises the air that links to each other with iron carbon fluidized-bed and prevent the filler caking in the iron carbon fluidized-bed.
Further, in said step ⑷, said microwave activity carbon reactor is an activated carbon packed tower, is outside equipped with microwave emitter at the tower body of activated carbon packed tower.
Further, in said step ⑻, said electric flocculator-settler comprises aluminum electrode plate, RF, lattice plate flocculation reactor and swash plate.
Further, in said step ⑻, said electric flocculator-settler also comprises hydrogen peroxide, acid, alkali, SEPIGEL 305 quantitative dosing stand-by plant.
Further, in said step ⑻, said electric flocculator-settler also comprises redox potential and pH value controller.
Further; In said step ⑻; The equipment that relates to also comprises the sand carbon hay tank that links to each other with the heavy clear device of said electricity flocculation, gets into sand carbon hay tank through clarifying waste water from the heavy clear device of electricity flocculation and filters, and filters discharge water up to standard and discharges from sand carbon hay tank.
The invention has the beneficial effects as follows: 1, high-speed pump hybrid technology among the present invention that is micro-nano bubble technology makes ozone+oxygen (O
3+ O
2) form the only microbubble of 1～10nm of diameter, and conventional Ti aeration head only can produce the bubble of diameter 300～500mm, so the gas-to-liquid contact area becomes hundred times of ground to increase, reaction has been accelerated.2, the technology of the ultraviolet catalytic ozone reaction among the present invention adopts the ozone reaction technology of microwave-excitation UV-light, uses ultraviolet excitation ozone, can make part ozone generation hydroxyl radical free radical, thereby accelerate ozone reaction speed.This has been that a lot of researchs confirm; But large-scale industry is few with case, and reason is: the ozone reactor of prior art is one 7～8 a meters high hollow tower, and conventional high voltage electric UV-light length is less than one meter; No matter it is installed in top, middle part or the bottom of tower; All can't resolve the problem of high-voltage fluorescent tube electric contact waterproof electric leakage, the present invention adopts microwave-excitation to produce UV-light, and high voltage electric is only connected the outer microwave emitter of device body; With the fluorescent tube emitted energy of high-frequency electromagnetic waveshape in water body, this problem with regard to not existing high pressure fluorescent tube connector lug to leak.3, the microwave catalysis activated carbon reaction technology among the present invention has adopted microwave to activate the activated carbon reaction technology; Ozone reaction has two characteristics: in 15～30 minutes of initial reaction stage; Speed of response is very fast; It is fast to show as the COD changing down because at this moment in the water organic concentration higher relatively, when especially the small molecular weight organic content is high in the water; This characteristic is more obvious, and COD total degradation amount only accounts in the water about 30% of total COD in this stage water; Behind 30 minutes of reaction later stage, speed of response is very slow, shows as COD and reduces little; Because at this moment organic content is lower in the water, the small organic molecule major part that is prone to degraded is decomposed, and remaining is the larger molecular organics of difficult degradation mostly; Accomplish this section reaction, need consumption more than 2～5 hours, if only adopt conventional ozone reaction tower; Then ozone concn is high in the reaction tower exhaust, and the ozone waste is big, and this can not accept on engineering cost.Microwave catalysis activated carbon reactions step among the present invention has successfully solved the problems referred to above.4, the technology of the micro-electrolysis reaction among the present invention adopts the three-phase fluidization bed technique to solve iron carbon filler inactivation, stops up a difficult problem; Its operation main points are: 1. under the normal circumstances; It is to move with expanded bed; Being that filler particles only is in critical flow chemical industry condition, only is slightly to rub and be in contact with one another between the particle surface, and this moment, energy consumption was minimum.By bed resistance △ P monitoring iron carbon filler caking prelude, when △ P reached a threshold value, PLC can increase fluidisation pump fluidisation pressure automatically.2. by the reactive behavior of ORP value monitoring iron carbon filler in the bed, when ORP dropped to stagnation point, PLC also can adjust the intake pump flow, with the adjustment reaction times, adjusted fluidisation simultaneously and pumped power, changed the fluidisation operating mode, increased the mutual frictional force of particle, upgraded reaction surface.The speed of 3. being separated out on iron carbon granule surface by bed pH value monitoring heavy metal is adjusted the soda acid add-on to stablize pH between given zone by PLC.The premises is to measure on the curve basis at each heavy metal species simulated wastewater, comprehensively draws △ P-pH-ORP-Q relation, is transformed into program, imports among the PLC and accomplish.5, the Fenton's reaction among the present invention technology is further decomposed prussiate and other complex compound type organic in the waste water, and is further reduced the COD of waste water, Fenton reactor controlled oxidation reduction potential (ORP) value.Said Fenton reactor is a very classical Fenton's reaction system, in Fenton reactor, and Fe
++/ H
2O
2Ratio and H
2O
2Add total amount and determined reaction efficiency, owing to get into the Fe of Fenton reactor
++Amount is determined by the microelectrolysis process of three-phase fluidized bed, thereby only need control H
2O
2Add-on.Innovation part of the present invention is only can feed back among the PLC with an ORP value, instruction H
2O
2Administration system.6, the flocculation of the electricity of the aluminum electrode plate among the present invention is the Fe of Fenton reactor generation
++And Fe
+++Being adjusted in the pH value is to generate the Fe-Al composite flocculation agent under 7～8 conditions, makes waste water obtain clarification, filter up to standard and discharging.Innovation part of the present invention is with aluminum electrode plate electricity flocculation, it can: the wastewater pH 1-2 unit that raises 1., automatically, make waste water rise to pH5-6 automatically by pH4 in the Fenton reactor, aluminium electrode solubility rate is the fastest at this moment, newborn AL
+++Active maximum.2., new life's AL
+++With the Fe in the waste water
+++Under this pH, form Fe-AL composite flocculation agent core, flocculating effect is best.3., aluminum electrode plate can be Fe unnecessary in the waste water
+++Amount is changed and is separated out Fe0, and it is anti-yellow to avoid producing water, and it is limpid to produce water colorless.4., because above-mentioned situation, only need minute quantity alkali in the flocculation reaction groove behind electrode, just can be raised to pH7-8 by pH5-6, alkaline consumption is extremely low.7, the emergent immediate processing method of this complicated heavy metal wastewater thereby embodies through corresponding equipment; Its corresponding equipment has simple and easy quick, emergent and three kinds of functions of upgrade conversion; It need not to drop in a large number multiple industrial chemicals; Only need to regulate size of current, promptly can handle the heavy metal wastewater thereby of the not clear component of various complicacies apace, make heavy metal and the COD qualified discharge immediately in the waste water.8, its corresponding equipment is the equipment that cover electromechanical integration, a robotization, assembly type can be moved with vehicle; When unexpected incidents take place, can move this equipment to scene with flat-bed trailer, connect water pipe, utilize the mobile generator power supply, this equipment can move.9, this equipment can make the waste water station upgrading of the enterprise that produces heavy metal wastewater thereby, is placed on waste water station technology head end and makes pre-treatment usefulness, can promote the usefulness of whole waste water station; It is terminal to be placed on waste water station technology, makes advanced treatment usefulness, can promote the compliance rate of waste water station discharging water quality.10, more electrode and catalyst filling in the exchange device can be realized the conversion of unit function, become the water equipment at water source inferior.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention being done further detailed explanation, is not to be confined to this to practical range of the present invention.
As shown in Figure 1, the described complicated heavy metal wastewater thereby of the present embodiment immediate processing method of meeting an urgent need comprises the following steps: according to array of procedures
⑴, sand-bed filter filter, and the waste water that will contain complicated heavy metal is sent into sand-bed filter and carried out filtration treatment, and macrobead foreign material in the elimination waste water improve the waste water transparency, are beneficial to follow-up UV-irradiation;
⑵, high-speed pump mix, and high-speed pump is with ozone, oxygen (O
3+ O
2) and from the waste water mixed at high speed of step ⑴, produce the mixing bubble of micro/nano level ozone and oxygen, from forming the reaction contact area of hundred times of ground increase ozone and oxygen and waste water;
⑶, ultraviolet catalytic ozone reaction, the ultraviolet catalytic ozone reaction carries out in the UV-light ozone reactor, produces UV-light with microwave-excitation, and under UV-irradiation, the part ozone in the waste water is produced hydroxyl radical free radical by catalysis from the waste water of step ⑵;
⑷ the reaction of, microwave catalysis activated carbon, the microwave catalysis activated carbon is reflected in the microwave activity carbon reactor and carries out, and said microwave activity carbon reactor is an activated carbon packed tower, is outside equipped with microwave emitter at the tower body of activated carbon packed tower; With unreacted ozone and pollutent in the waste water of activated carbon adsorption from step ⑶, use the microwave catalysis activated carbon, make activated carbon regeneration, and the reaction of unreacted ozone and pollutent is constantly carried out;
More than reacting the effect that will reach is: making in the waste water is become exposed elemental metals ion by the heavy metal ion of complex compound complexing;
⑸, micro-electrolysis reaction, micro-electrolysis reaction carries out on iron carbon fluidized-bed, and from there being exposed heavy metal ion in the waste water of step ⑷, said exposed heavy metal ion is separated out in the micro-electrolysis reaction process and is the monomer heavy metal; In micro-electrolysis reaction, the equipment that relates to also comprises the air that links to each other with iron carbon fluidized-bed and prevent the filler caking in the iron carbon fluidized-bed; Air is the equipment that prevents filler caking in the iron carbon fluidized-bed, and the smooth up time of filler accumulation, fluidisation takes place in iron carbon fluidized-bed, opens the air recoil; The not smooth suitable situation of fluidisation disappears at once: iron carbon fluidized-bed is the fluidized-bed of a built-in iron carbon sintered particles; Under recycle pump promoted, particle was in fluidized state, and particle surface is by constantly friction renewal; Particle surface can inactivation, can not lump yet;
⑹ the circulation of, waste water through in the process of circulation groove, can sedimentation remove the particle that de-iron carbon fluidized-bed is taken out of from the waste water of step ⑸, and the impeller of pump is cavitated in the time of preventing the fluidisation pump depletion again, protection fluidisation pump;
⑹ the circulation of, waste water through in the process of circulation groove, can sedimentation remove the particle that de-iron carbon fluidized-bed is taken out of from the waste water of step ⑸, and the impeller of pump is cavitated in the time of preventing the fluidisation pump depletion again, protection fluidisation pump; Waste water in the circulation groove pumps into the described iron carbon of step ⑸ fluidized bed circulation through the fluidisation pump and handles; Said fluidisation pump is the PWR PLT of fluidized-bed, and it can regulate flow, the quality of control iron carbon fluidized-bed fluidized state and the size of iron carbon granule friction of motion intensity;
⑺, Fenton's reaction, Fenton's reaction carry out in Fenton reactor, with hydrogen peroxide (H
2O
2) add in the Fenton reactor, hydrogen peroxide with from the waste water of step ⑹ with get into Fenton reactor from the filtrating of step ⑼ and carry out Fenton's reaction, further decompose prussiate and other complex compound type organic in the waste water, reduce the COD of waste water; Said Fenton reactor is a round tank, and waste water is handled back pH through step ⑴ to step ⑷ and changed seldom, but through behind the said described micro-electrolysis reaction of step ⑸; PH 2 units that can rise; Promptly rise to pH4-5 by pH2-3, it is acid that waste water still is, and contains a large amount of Fe again
++, add hydrogen peroxide (H this moment
2O
2), just produce Fenton's reaction, further decompose prussiate and other complex compound type organic, reduce the chemical oxygen demand value of waste water;
⑻ the flocculation of, aluminum electrode plate electricity, the flocculation of aluminum electrode plate electricity is carried out in electric flocculator-settler, need be with hydrogen peroxide (H according to what regulate waste water ph
2O
2), acid, alkali, SEPIGEL 305 (being called for short PAM) joins in the electric flocculator-settler, will regulate from the waste water of step ⑺, the pH value is adjusted under 7～8 conditions, the Fe in the waste water
++And Fe
+++Generate the Fe-Al composite flocculation agent, make waste water obtain clarification; The equipment that relates to also comprises the sand carbon hay tank that links to each other with the heavy clear device of said electricity flocculation, gets into sand carbon hay tank through clarifying waste water from the heavy clear device of electricity flocculation and filters, and filters discharge water up to standard and discharges from sand carbon hay tank; Said electric flocculator-settler comprises aluminum electrode plate, RF, lattice plate flocculation reactor and swash plate; Also comprise hydrogen peroxide, acid, alkali, SEPIGEL 305 quantitative dosing stand-by plant; And also comprise redox potential and equipment such as pH value controller, sheet frame press drier, and equipment such as swash plate, sand-bed filter, sheet frame press drier all are conventional equipments of wastewater treatment; That is: said electric flocculator-settler be one by aluminum electrode plate, RF, lattice plate flocculation reactor, swash plate and hydrogen peroxide (H
2O
2), the integration apparatus of acid, alkali, SEPIGEL 305 (being called for short PAM) quantitative dosing stand-by plant, redox potential and equipment compositions such as pH value controller, sheet frame press drier;
⑼, sludge press filtration, sludge press filtration carry out in pressure filter, and the mud that step ⑻ discharges press dry into mud cake through pressure filter and discharges, and the backspace step ⑺ re-treatment of will filtrating.
Above-mentioned each step required equipment all is combined on the steelframe chassis, can whole handling, place on-the-spotly, and the water flowing energising can be used.
The above only is a preferred embodiment of the present invention, so all equivalences of doing according to the described structure of patent claim of the present invention, characteristic and principle change or modify, is included in equally in the protection domain of patented claim of the present invention.
Claims (8)
1. the complicated heavy metal wastewater thereby immediate processing method of meeting an urgent need is characterized in that: comprise the following steps: according to array of procedures
⑴, sand-bed filter filter, and the waste water that will contain complicated heavy metal is sent into sand-bed filter and carried out filtration treatment, and macrobead foreign material in the elimination waste water improve the waste water transparency, are beneficial to follow-up UV-irradiation;
⑵, high-speed pump mix, and high-speed pump produces the mixing bubble of micro/nano level ozone and oxygen, from forming the reaction contact area of hundred times of ground increase ozone and oxygen and waste water with ozone, oxygen with from the waste water mixed at high speed of step ⑴;
⑶, ultraviolet catalytic ozone reaction, the ultraviolet catalytic ozone reaction carries out in the UV-light ozone reactor, produces UV-light with microwave-excitation, and under UV-irradiation, the part ozone in the waste water is produced hydroxyl radical free radical by catalysis from the waste water of step ⑵;
⑷, the reaction of microwave catalysis activated carbon; The microwave catalysis activated carbon is reflected in the microwave activity carbon reactor and carries out; With unreacted ozone and pollutent in the waste water of activated carbon adsorption from step ⑶; Use the microwave catalysis activated carbon, make activated carbon regeneration, and the reaction of unreacted ozone and pollutent is constantly carried out;
⑸, micro-electrolysis reaction, micro-electrolysis reaction carries out on iron carbon fluidized-bed, is the monomer heavy metal from having been separated out in the micro-electrolysis reaction process by exposed heavy metal ion in the waste water of step ⑷;
⑹ the circulation of, waste water through in the process of circulation groove, can sedimentation remove the particle that de-iron carbon fluidized-bed is taken out of from the waste water of step ⑸, and the impeller of pump is cavitated in the time of preventing the fluidisation pump depletion again, protection fluidisation pump;
⑺, Fenton's reaction; Fenton's reaction carries out in Fenton reactor; Hydrogen peroxide is added in the Fenton reactor; Hydrogen peroxide with from the waste water of step ⑹ with get into Fenton reactor from the filtrating of step ⑼ and carry out Fenton's reaction, further decompose prussiate and other complex compound type organic in the waste water, reduce the COD of waste water;
⑻, the flocculation of aluminum electrode plate electricity; The flocculation of aluminum electrode plate electricity is carried out in electric flocculator-settler; According to regulating need hydrogen peroxide, acid, alkali, SEPIGEL 305 being joined in the electric flocculator-settler of waste water ph; To regulate from the waste water of step ⑺, the pH value is adjusted under 7～8 conditions, the Fe in the waste water
++And Fe
+++Generate the Fe-Al composite flocculation agent, make waste water obtain clarification;
⑼, sludge press filtration, sludge press filtration carry out in pressure filter, and the mud that step ⑻ discharges press dry into mud cake through pressure filter and discharges, and the backspace step ⑺ re-treatment of will filtrating.
2. the complicated heavy metal wastewater thereby according to claim 1 immediate processing method of meeting an urgent need is characterized in that: in said step ⑹, the waste water in the circulation groove pumps into the described iron carbon of step ⑸ fluidized bed circulation through the fluidisation pump and handles.
3. the complicated heavy metal wastewater thereby according to claim 1 and 2 immediate processing method of meeting an urgent need is characterized in that: in said step ⑸, the equipment that relates to also comprises the air that links to each other with iron carbon fluidized-bed and prevent the filler caking in the iron carbon fluidized-bed.
4. the complicated heavy metal wastewater thereby according to claim 1 immediate processing method of meeting an urgent need, it is characterized in that: in said step ⑷, said microwave activity carbon reactor is an activated carbon packed tower, is outside equipped with microwave emitter at the tower body of activated carbon packed tower.
5. the complicated heavy metal wastewater thereby according to claim 1 immediate processing method of meeting an urgent need, it is characterized in that: in said step ⑻, said electric flocculator-settler comprises aluminum electrode plate, RF, lattice plate flocculation reactor and swash plate.
6. the complicated heavy metal wastewater thereby according to claim 1 immediate processing method of meeting an urgent need, it is characterized in that: in said step ⑻, said electric flocculator-settler also comprises hydrogen peroxide, acid, alkali, SEPIGEL 305 quantitative dosing stand-by plant.
7. the complicated heavy metal wastewater thereby according to claim 1 immediate processing method of meeting an urgent need, it is characterized in that: in said step ⑻, said electric flocculator-settler also comprises redox potential and pH value controller.
8. the complicated heavy metal wastewater thereby according to claim 1 immediate processing method of meeting an urgent need; It is characterized in that: in said step ⑻; The equipment that relates to also comprises the sand carbon hay tank that links to each other with the heavy clear device of said electricity flocculation; Get into sand carbon hay tank through clarifying waste water from the heavy clear device of electricity flocculation and filter, filter discharge water up to standard and discharge from sand carbon hay tank.
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