CN202519115U - Nano-catalysis, electrolysis, flocculation and air-floatation device - Google Patents
Nano-catalysis, electrolysis, flocculation and air-floatation device Download PDFInfo
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- CN202519115U CN202519115U CN 201220167677 CN201220167677U CN202519115U CN 202519115 U CN202519115 U CN 202519115U CN 201220167677 CN201220167677 CN 201220167677 CN 201220167677 U CN201220167677 U CN 201220167677U CN 202519115 U CN202519115 U CN 202519115U
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Abstract
A nano-catalysis, electrolysis, flocculation and air-floatation device is characterized in that a coagulating sedimentation tank, a primary air-floatation tank, an electrolytic air-floatation tank and a slag removing tank are arranged in a casing of the device, a water inlet and a mixer are arranged on the top of the coagulating sedimentation tank, the bottom of the coagulating sedimentation tank is communicated with the primary air-floatation tank, a side sewage outlet is connected with a sewage discharge pipe, a dissolved gas release pipe is arranged at the edge of the primary air-floatation tank, a sewage outlet is arranged with the sewage discharge pipe, the upper portion of the inner side of the primary air-floatation tank is communicated with the electrolytic air-floatation tank, the electrolytic air-floatation tank is divided into an upper layer and a lower layer by an upper-lower partition plate, a slag scraping device is arranged in an upper gas and liquid separating chamber, an electrolytic cell is mounted between the upper layer and the lower layer of the electrolytic air-floatation tank, the bottom of the electrolytic cell is fixed at the inner bottom of the casing, the top of the electrolytic cell is open and horizontal with the top of the upper-lower partition plate, an electrode is mounted in the electrolytic cell, and the interval between an anode and a cathode of the electrode serves as a water flow passage. The device has multiple functions of electrolysis, flocculation, air-floatation and the like, and is high in automation degree and sewage removal efficiency, low in running cost and convenient to operate and maintain.
Description
Technical field
The utility model relates to a kind of nano-catalytic electrolytic flocculation air-floating apparatus; Particularly relate to a kind of physical treatment process, materialization treatment process, biochemical treatment process of integrating, with surface coverage nano level titanium electrode with good catalytic properties precious metal chemical complex coated material being arranged is anodic nano-catalytic electrolytic flocculation air-floating apparatus.
Background technology
At present, the technology of improvement lake eutrophication and waste water can be divided into physical treatment process, materialization treatment process and biochemical treatment process three major types.Physical treatment process mainly is the impurity of methods removal larger particles such as employing deposition, filtration, flotation, evaporation etc.; Wherein the air supporting method also is in flotation; Be one of the easiest a kind of waste water treatment process, its principle is to manage to make a large amount of microbubble of generation in the water, to form water, gas and to be removed the three-phase mixtinite of material; Under the acting in conjunction of multiple power such as IT, bubble rising buoyancy and hydrostaticpressure difference; After promoting that micro bubble sticks on removed tiny oil droplets and other pollutent, because of adherend density less than floating to the water surface on the water, thereby make elaioleucite and the separated removal of other pollutent in the water.Materialization treatment process mainly is to adopt methods such as redox, extraction, absorption, IX, coagulating sedimentation, neutralization, electrodialysis to remove fine suspension, colloid and water dissolution material, perhaps the toxic substance modification is become non-toxic substance.Biochemical treatment process mainly is through biological action colloidal in the waste water and dissolved organic substance to be decomposed to destroy to separate removal, mainly contains anaerobic process, aerobic method, the aerobe fermentation method of holding concurrently etc.
In recent years, electric floating method is the comparatively active wastewater processing technology of development in the materialization treatment technology, and this method is provided with positive and negative electrode in water, behind logical upward direct current, promptly produce micro-bubble on the electrode (negative electrode), and simultaneously, effects such as coagulation also produce electrolysis.Current, various types of electric floating method devices are arranged, be applied in the processing of sewage, industrial organic waste water, electroplating wastewater, oil field waste etc.But existing electric floating method device exposes some problems in operational process, the one, and consumption of electrode is big, the electrode materials polluted-water; The 2nd, the electric density of electrode is little, and overpotential is high, and WV is higher, the strong oxidizing property material of the status nascendi of generation and the limited amount of micro-bubble, and the electric energy application efficiency is not high, and energy consumption is big; The 3rd, after the electrolysis, solid-liquid separation effect is undesirable, need carry out the secondary solid-liquid separation, and processing technological flow is long.
Chinese patent: 201010202356.5 disclose the grading recycle device of bathing of a kind of electric flocculation electro air-float purification and laundrywastes; The water outlet that it is characterized in that being provided with water leg through threeway one tunnel as front end water outlet directly export; Another road serial connection venturi tube; The water outlet of venturi tube connects electrolyzer, and the trunnion of venturi tube is communicated with the inlet pipe that has filter bowl; It is the short double anode oxidation unit of iron that electrolyzer is set, and is with Ti/SnO
2The both sides that anode and Fe anode branch are in negative electrode constitute combined anode, and negative electrode adopts air diffusion electrode; Water outlet series connection at electrolyzer is provided with the two-stage filtration unit, in the unitary one-level of two-stage filtration filtration chamber, the one-level outlet valve is set; On the unitary cascade filtration of two-stage filtration chamber, the secondary effluent valve is set; Can effectively reduce or remove tensio-active agent and other organic pollutants in bathing/laundrywastes, make bathing/laundrywastes obtain grading recycle.
Chinese patent CN02248009.9 discloses the device that a kind of electric floating method is disposed of sewage; This electric floating reactor drum is made up of some pipe reactions unit; The unit pipe reaction is made up of cathode bar, short tube, insulative, anode outer tube and dielectric pin, the coaxial installation of anode outer tube and cathode bar, and the circular clearance between the two poles of the earth constitutes sewage routeway; Short tube that the cathode bar the other end has and cathode bar constitute negative electrode jointly; Several reaction members are connected each other and level is installed in the device body, link to each other through metal conductive strips between the unit, have solved existing sewage disposal device and have catchmented than problem such as little, that mass transfer condition is poor, distribution of current is uneven, the unit volume processing power is low; Have simple in structure, help strengthening mass transfer; Shorten the treatment time, improve advantages such as sewage treating efficiency, extensively be suitable for Industrial Wastewater Treatment, industrial circulating cooling water processing and domestic water and handle.
Summary of the invention
The utility model is the deficiency that exists to existing electric floating device; Provide that the floating technology of a kind of gas collection, flocculation sediment are technological, nanotechnology, electrocatalysis technology and electrochemical techniques are in one; With surface coverage nano level titanium electrode with good catalytic properties precious metal chemical complex coated material being arranged is anode, and current collection is separated, solid-liquid separation and gas-liquid separating function are the nano-catalytic electrolytic flocculation air-floating apparatus of one.The utility model adopts secondary air-floatation to handle, and the first step adopts physics air supporting, makes contamination adhesion on bubble, makes its density less than water, separates thereby realize suspending; The second stage is that the electrochemical method that on physics air supporting basis, adopts the rice technology of collecting, catalysis technique to combine carries out secondary air supporting processing.Compare with traditional electrolyzer, the utlity model has that WV is extremely low, current density is big, energy consumption is little, electrical efficiency is higher, do not have characteristics such as consumption of electrode, multiple functions such as union electrolysis, flocculation sediment, air supporting are one.
The utility model is provided with housing, and the housing inner-use clapboard is separated into four functional pools such as coagulative precipitation tank, one-level air flotation pool, electrofloatation pond, deslagging pond.Said coagulation agitated pool top is provided with water-in and whisking appliance is installed, and said water-in is connected with the influent waste water pipeline through pipeline, is provided with wastewater outlet in the coagulative precipitation tank bottom, and said wastewater effluent mouth is communicated with the one-level air flotation pool.Said one-level air flotation pool bottom is provided with dissolved air release, dissolves the gas releasing tube, dissolves gas releasing tube and dissolved air release, air compressor machine pipe connection, and one-level air flotation pool top communicates with the electrofloatation pond.Separated by baffle plate between bottom, said electrofloatation pond and the top, be divided into two layers up and down, the upper strata is a gas-liquid separation chamber, is provided with slag scraper; Slag notch communicates with the deslagging pond, and lower floor is the draining settling chamber, and electrolyzer is arranged between the levels; Be provided with at least one electrolyzer, the bottom of electrolyzer is fixed on the housing inner bottom part, the open-top of electrolyzer and with levels dividing plate top, horizontal; Electrode is installed in the electrolyzer, and electrode comprises anode and negative electrode, and the spacing between anode and the negative electrode was an aquaporin.Said anode connects with the anode of direct supply, and said negative electrode connects with the negative electrode of direct supply; Sewage draining exit is arranged on bottom, draining settling chamber, and the rising pipe that catchments is arranged on position, upper middle, draining settling chamber, is connected with the electrolysis outlet conduit.The deslagging pond is provided with slag-drip opening, and slag-drip opening is connected with scum pipe.
Said housing is provided with internal layer and skin, and internal layer adopts bituminous epoxy paint to handle, and the outer steel plate that adopts is outer.
Said electrofloatation pond is divided into draining settling chamber and gas-liquid separation chamber.
Said electrolyzer is rectangular parallelepiped electrolyzer or square electrolyzer.
Electrode is installed in the electrolyzer, and electrode comprises anode and negative electrode, and the spacing between anode and the negative electrode is 2mm ~ 4mm, and the space between anode and the negative electrode is as water stream channel.
Leave the gap of 150mm～200mm height between said electrolyzer inner anode and negative electrode top and the electrolyzer top.
It is the titanium-base anode of the coating of metal oxides of 10～35nm that said anode adopts surface coverage that crystal grain is arranged, and said anode is a tabular, a kind of shape in circular-arc, cylindric, netted; Said negative electrode is to be the negative electrode of material with titanium, iron, aluminium, stainless steel, zinc, copper, nickel, lead or graphite, and said negative electrode is a tabular, a kind of shape in circular-arc, cylindric, netted.
To fresh water, seawater and bitter, waste water, when municipal wastewater is handled; At first by the coagulative precipitation tank in the device; Under stirring action, add an amount of flocculant and flocculation aid; Accelerate solid particulate matter in the water (like the mud of chemical precipitates, the formed flco of coagulating treatment and biological treatment etc.) inter coagulation mutually; Form particle diameter and the bigger granular solids thing of quality; And rapid precipitation gets off and from water, removes, and removes the sand grains in the water by precipitation simultaneously; Then; Get into the one-level flotation tank; The micro-bubble that dissolved air release produces adheres to lightweight suspension thing (like tiny solid particle, oil, benzene etc.) come-ups a large amount of in the water, reaches the effect that Separation of Solid and Liquid or liquid liquid separate, thereby reduces COD in the water, ammonia nitrogen, colourity, turbidity etc.; The water outlet of one-level flotation tank gets into the electrofloatation pond; The strong oxidizing property material that electrolysis produces is killed microorganism, bacterium, algae and planktonic organism in the water; And the organic matter in the oxidation Decomposition water, make contamination indexs such as COD in the water, colourity, turbidity, ammonia nitrogen, stink reduce significantly; By deslagging pond collecting precipitation thing and scum silica frost, make that water body obtains to purify at last.
Described electrofloatation pond is when carrying out disinfection purification to fresh water; The electrocatalysis of the nano coating through being covered in the anode top layer; Reduce electrolytic overpotential; Thereby make fresh water electrolysis under lower voltage conditions produce radical,, and following four effects take place like the oxygen of status nascendi, chlorine, hydroxyl and the hydrogen of status nascendi:
1, strong oxidation materials such as the chlorine of the oxygen of the free radical of electrolysis generation such as nascent state, nascent state, hydroxyl can be killed microorganism, bacterium, algae and planktonic organism in the water; The corpse that produces can combine come-up with a large amount of micro-bubbles that negative electrode produces and remove, and eliminates microorganism, algae and planktonic pollution and reduces turbidity;
2, the organism of the strong oxidizing substance that produces of electrolysis in can oxygenolysis water reduces contamination indexs such as COD in the water, colourity, stink;
3, under electric field action; Make on the one hand materials such as suspension in the water, colloid, charged corpuscle take off surely; Cation in the water, anion move to negative electrode and anode respectively on the other hand; In negative electrode and anode generation Effect of Electric Double Layer and the effect of many electricity layers; Form precipitation and bring out flocculation; Impel materials such as tiny suspension, colloid, charged corpuscle to form thick floccule body, the accelerating impurity sedimentation effectively reduces contamination indexs such as SS, turbidity;
The hydrogen of a large amount of status nascendis that 4, negative electrode produces during electrolysis can form the hydrogen small bubbles; Have air flotation effect,, can adhere to a large amount of lightweight suspension things along with the come-up of bubble; Reach solid-liquid separation or the isolating effect of liquid liquid, thereby further reduce COD in the water, colourity, turbidity etc.
Described electrofloatation pond is to seawater and brackish water purification sterilization the time; It is electrocatalysis through the coating that is covered in the anode top layer; Reduce electrolytic overpotential; Thereby make seawater, brackish water electrolysis under lower voltage conditions after the one-level air supporting, produce the chlorine [Cl] of status nascendi and the hydrogen [H] of status nascendi, and following four effects take place:
1, the chlorine [Cl] of the nascent state of electrolysis generation has strong oxidizing property; Can kill microorganism, algae and planktonic organism in the water; The corpse that produces can combine come-up with a large amount of micro-bubbles that negative electrode produces and remove, and thoroughly eliminates microorganism, algae and planktonic pollution and reduces turbidity;
2, the organism in chlorine [Cl] the ability oxygenolysis water of the status nascendi of electrolysis generation, contamination indexs such as the COD in the reduction water, colourity, stink;
3, under electric field action; Make on the one hand materials such as suspension in the water, colloid, charged corpuscle take off surely; Cation in the water, anion move to negative electrode and anode respectively on the other hand; In negative electrode and anode generation Effect of Electric Double Layer and the effect of many electricity layers; Form precipitation and bring out flocculation; Impel materials such as tiny suspension, colloid, charged corpuscle to form thick floccule body, the accelerating impurity sedimentation effectively reduces contamination indexs such as SS, turbidity;
The hydrogen of a large amount of status nascendis that 4, negative electrode produces during electrolysis can form the hydrogen small bubbles; Have air flotation effect,, can adhere to a large amount of lightweight suspension things along with the come-up of bubble; Reach solid-liquid separation or the isolating effect of liquid liquid, thereby further reduce COD in the water, colourity, turbidity etc.
Described electrofloatation pond is to waste water, when municipal wastewater is handled; It is electrocatalysis through the coating that is covered in the anode top layer; Reduce electrolytic overpotential, thereby make waste water after the one-level air supporting, municipal wastewater electrolysis under lower voltage conditions, produce the strong oxidizing property material of status nascendi; When having a large amount of cl ionss to exist, generation be the chlorine [Cl] of status nascendi and the hydrogen [H] of status nascendi; When not having cl ions to exist, generation be the hydrogen [H] of oxygen [O], hydroxyl [OH] and the status nascendi of status nascendi, and following seven effects take place:
1, the strong oxidizing property material of the status nascendi that produces of electrolysis is killed mikrobe, bacterium, algae and the planktonic organism in the water and is combined come-up to remove with a large amount of micro-bubbles that negative electrode produces, eliminates also reduction turbidity of mikrobe, bacterium, algae, planktonic pollution;
2, the organism in the quick oxygenolysis waste water of strong oxidizing property material of the status nascendi of electrolysis generation; Make macromolecular substance be decomposed into small-molecule substance, reduce the COD in the waste water, improve the B/C value simultaneously; Improve biodegradability, for subsequent disposal is created better biochemical condition;
3, the quick oxygenolysis of strong oxidizing property material of the status nascendi of electrolysis generation remains in the chromophoric group and the auxochrome group of coloring matter in the waste water; Make it that chain rupture or open loop take place; Make waste water decoloring; And the air supporting effect of a large amount of micro-bubbles of combined with cathode generation, effectively reduce chroma in waste water, reach the purpose of decolouring;
4, the ammonia nitrogen in the quick oxygenolysis waste water of strong oxidizing property material of the status nascendi of electrolysis generation reduces the ammonia nitrogen index in the water;
5, the osmophore of the multiple radical (strong oxidizing property material) that produces of electrolysis in can oxygenolysis waste water removed the stench in the waste water;
6, under electric field action; Make on the one hand materials such as suspension in the water, colloid, charged corpuscle take off surely; Cation in the water, anion move to negative electrode and anode respectively on the other hand; In negative electrode and anode generation Effect of Electric Double Layer and the effect of many electricity layers; Form precipitation and bring out flocculation; Impel materials such as tiny suspension, colloid, charged corpuscle to form thick floccule body, the accelerating impurity sedimentation effectively reduces contamination indexs such as SS, turbidity;
The hydrogen of a large amount of status nascendis that 7, negative electrode produces during electrolysis can form the hydrogen small bubbles; Have air flotation effect,, can adhere to a large amount of lightweight suspension things along with the come-up of bubble; Reach solid-liquid separation or the isolating effect of liquid liquid, thereby further reduce COD in the water, colourity, turbidity etc.
In sum; The utility model is that the floating technology of gas collection, flocculation sediment are technological, the novel water treatment device of nanotechnology, catalysis technique and electrochemical techniques; Multiple functions such as current collection is separated, flocculation sediment, air supporting are one; Can reduce COD in the water, ammonia nitrogen, colourity, stink, turbidity, SS etc. quickly and efficiently, and kill mikrobe, bacterium, algae and the planktonic organism in the water, make that water body obtains to purify.
Adopt nano-catalytic electrolytic flocculation air-floating apparatus that water is carried out purifying treatment, have following remarkable advantage:
1, its current collection is separated, multiple functions such as flocculation sediment, air supporting are one, and level of automation is high, and scrubbing efficient is high, and running cost is low, and operation and maintenance is convenient;
2, add chemical substances such as flocculation agent and gas floatation agent and have only 1/5th of traditional technology, not only reduce chemical substance consumption significantly, save cost of water treatment, and reduced secondary pollution;
3, the sludge quantity that produces has only 1/5th of conventional art, reduces mud discharging significantly, and reduces the solid waste disposal cost;
4, device is stable, the bacterium in the treating water, algae, mikrobe, zooplankton, COD, ammonia nitrogen, colourity, stink, turbidity, SS etc. quickly and efficiently, and effluent quality is good.
Description of drawings
Fig. 1 is that the structure of the utility model embodiment is formed synoptic diagram.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the side-view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
Shown in Fig. 1～3, the utility model embodiment is provided with housing 1, coagulative precipitation tank 2, one-level air flotation pool 3, electrofloatation pond 4, deslagging pond 5, water-in 6, whisking appliance 7, dissolves gas releasing tube 8, electrolyzer 9, electrode 10, slag scraper 11, slag-drip opening 12, sewage draining exit 13, levels dividing plate 14, header 15, sewage draining exit 16, draining settling chamber 17, gas-liquid separation chamber 18, the water outlet 19 that catchments, dissolved air release 20, anode terminal 21 and cathode terminal 22.
Be separated into coagulative precipitation tank 2, one-level air flotation pool 3, electrofloatation pond 4,5 four ponds, deslagging pond at housing 1 usefulness dividing plate; Coagulative precipitation tank 2 tops are provided with water-in 6 and whisking appliance 7; Water-in 6 is connected with the influent waste water pipeline through pipeline; The coagulative precipitation tank bottom communicates with one-level air flotation pool 3, and limit portion sewage draining exit 16 is connected with blow-off pipe; One-level air flotation pool 3 limit portions are provided with dissolves gas releasing tube 8, dissolves gas releasing tube 8 and is connected with dissolved air release 20, external air source, and sewage draining exit 16 is connected with blow-off pipe, communicates with electrofloatation pond 4 in one-level air flotation pool 3 inside upper part; Electrofloatation pond 4 is divided into two layers up and down by dividing plate 14, and the upper strata is a gas-liquid separation chamber 18, is provided with scum silica frost scraper plate, slag notch; Electrolyzer is housed between the levels, is provided with at least one electrolyzer 9, the bottom of electrolyzer 9 is fixed on housing 1 inner bottom part; The open-top of electrolyzer 9 and with levels dividing plate 14 top, horizontal, electrode 10 is installed in the electrolyzer 9, electrode 10 comprises anode and negative electrode; Gap between anode and the negative electrode was an aquaporin; Said anode connects with the anode of direct supply through anode terminal 21, and said negative electrode connects with the negative electrode of direct supply through cathode terminal 22, and sewage draining exit 16 is arranged on 17 bottoms, draining settling chamber; Header 15 is arranged on position, 17 upper middle, draining settling chamber, is connected with the electrolysis outlet conduit; Deslagging pond 5 is provided with slag-drip opening 12, and slag-drip opening 12 is connected with scum pipe.
Said housing 1 two-layerly is made up of inside and outside, and internal layer adopts bituminous epoxy paint to handle, and skin is a steel plate.
In the said electrolyzer 9 electrode 10 is installed, electrode 10 comprises anode and negative electrode, and the spacing between anode and the negative electrode is 2mm ~ 4mm.
Leave the gap of 150mm～200mm height between said electrolyzer 9 inner anodes and negative electrode top and electrolyzer 9 tops.
Said anode is to be substrate with the titanium, and it is the inert anode of the coating of metal oxides of 10～35nm that surface coverage has crystal grain, and anode is a tabular, a kind of shape in circular-arc, cylindric, netted; Said negative electrode is to be the negative electrode of material with titanium, iron, aluminium, stainless steel, zinc, copper, nickel, lead or graphite, and negative electrode is a kind of shape in circular-arc, cylindric, netted.
During the work of said nano-catalytic electrolytic flocculation air-floating apparatus in the electrolyzer 9 anode and cloudy interpolar WV be 2 ~ 8V, current density is 10～250mA/cm
2Two interpolar optimum operating voltages are 3～5V, and optimum current density is 100～150mA/cm
2
When fresh water, seawater, brackish water, waste water and municipal wastewater are handled,, under stirring action, add 2～500g/m at first through the coagulative precipitation tank in the device
3Flocculation agent and 2～300g/m
3Coagulant aids; Accelerate solid particulate matter in the water (like the mud of chemical precipitates, the formed flco of coagulating treatment and biological treatment etc.) mutual coagulation mutually; Form particle diameter and the bigger granular solids thing of quality; And rapid precipitation gets off and from water, removes, and removes the sand grains in the water through precipitating action simultaneously; Then; Get into the one-level air flotation pool; The micro-bubble that dissolved air release produces adheres to lightweight suspension thing (like tiny solid particle, oil, benzene etc.) come-ups a large amount of in the water, reaches solid-liquid separation or the isolating effect of liquid liquid, thereby reduces COD in the water, ammonia nitrogen, colourity, turbidity etc.; The water outlet of one-level air flotation pool gets into the electrofloatation pond; The strong oxidizing property material that electrolysis produces is killed mikrobe, bacterium, algae and planktonic organism in the water; And the organism in the oxygenolysis water, make contamination indexs such as COD in the water, colourity, turbidity, ammonia nitrogen, stink reduce significantly; Through deslagging pond collecting precipitation thing and scum silica frost, make that water body obtains to purify at last.
Below provide the specific embodiment of said nano-catalytic electrolytic flocculation air-floating apparatus.
Embodiment 1
Treatment effect to eutrophication lake water
Lake water is pumped into nano-catalytic electrolytic flocculation air-floating apparatus, in coagulative precipitation tank 2, press 20～500g/m
3Add flocculation agent PAC, utilize whisking appliance 7 to stir accelerate precipitation; Open the dissolved air release 20 in the one-level air flotation pool 3 simultaneously, and regulate suitable gas flow; 9 liang of interpolar voltages of electrolyzer are 3～8V in the electrofloatation pond 4, and current density is 10～150mA/cm
2State, keeping the residence time of lake water in one-level air flotation pool 3 is 1 ~ 2 minute, and between electrolyzer 9 pole plates the residence time be 0.3 ~ 1 minute, the effect before and after handling is seen table 1.
The treatment effect of table 1 pair eutrophication lake water disinfection
Treatment effect to seawater
Seawater is pumped into nano-catalytic electrolytic flocculation air-floating apparatus, in coagulative precipitation tank 2, press adding 2～100g/m
3Flocculation agent PAC utilizes whisking appliance 7 to stir accelerate precipitation; Open the dissolved air release 20 in the one-level air flotation pool 3 simultaneously, and regulate suitable gas flow; 9 liang of interpolar voltages of electrolyzer are 3～5V in the electrofloatation pond 4, and current density is 10～200mA/cm
2State, keeping the residence time of seawater in one-level air flotation pool 3 is 1 ~ 2 minute, and between electrolyzer 9 pole plates the residence time be 0.3 ~ 1 minute, the effect before and after handling is seen table 2.
The treatment effect of table 2 pair seawater cleaning
Treatment effect to printing and dyeing advanced treatment waste water
The second pond printing and dyeing advanced treatment waste water that will pass through biochemical treatment pumps into nano-catalytic electrolytic flocculation air-floating apparatus, in coagulative precipitation tank 2, adds flocculation agent PAC, and waste water per ton adds the PAC of 800g, utilizes whisking appliance 7 to stir accelerate precipitation; Open the dissolved air release 20 in the one-level air flotation pool 3 simultaneously, and regulate suitable gas flow; 9 liang of interpolar voltages of electrolyzer are 3～5V in the electrofloatation pond 4, and current density is 10～250mA/cm
2State, keeping the residence time of waste water in one-level air flotation pool 3 is 5 ~ 10 minutes, and between electrolyzer 9 pole plates the residence time be 2 ~ 5 minutes, the effect before and after handling is seen table 3.
The treatment effect of table 3 pair printing and dyeing advanced treatment waste water
Embodiment 4
Treatment effect to leather-making waste water
Leather-making waste water gets into and flows into the equalizing tank mixing after the coarse rack filter removes by filter the macrobead solids; Again the waste water pump of equalizing tank being gone into hydraulic screen filters depilation and sends out and flow into the desulphurization reaction pond after waiting impurity; Desulfurization wastewater flows into the air supporting of nano-catalytic electrolytic flocculation, in coagulative precipitation tank 2, adds flocculation agent FeSO
4, waste water per ton adds the FeSO of 800g
4, utilize whisking appliance 7 to stir accelerate precipitation; Open the dissolved air release 20 in the one-level air flotation pool 3 simultaneously, and regulate suitable gas flow; 9 liang of interpolar voltages of electrolyzer are 3～5V in the electrofloatation pond 4, and current density is 10～250mA/cm
2State, keeping the residence time of waste water in one-level air flotation pool 3 is 5 ~ 15, and between electrolyzer 9 pole plates the residence time be 2 ~ 5 clocks, the effect before and after handling is seen table 3.
The treatment effect of table 4 pair leather-making waste water
Claims (4)
1. nano-catalytic electrolytic flocculation air-floating apparatus; It is characterized in that being provided with housing; In housing, be provided with coagulative precipitation tank, one-level air flotation pool, electrofloatation pond, four ponds, deslagging pond, the coagulative precipitation tank top is provided with water-in and whisking appliance, and water-in is connected with the influent waste water pipeline through pipeline; The coagulative precipitation tank bottom communicates with the one-level air flotation pool, and limit portion sewage draining exit is connected with blow-off pipe; Be provided with molten gas releasing tube in one-level air supporting pool side portion, dissolve the gas releasing tube and be connected with dissolved air release, external air source, sewage draining exit is connected with blow-off pipe, and one-level air flotation pool inside upper part communicates with the electrofloatation pond; The electrofloatation pond is divided into two layers up and down by the levels dividing plate, and upper strata gas-liquid separation chamber is provided with slag scraper, and electrolyzer is housed between the levels; Be provided with at least one electrolyzer, the bottom of electrolyzer is fixed on the housing inner bottom part, the open-top of electrolyzer and with levels dividing plate top, horizontal; Electrode is installed in the electrolyzer; Electrode comprises anode and negative electrode, and the spacing between anode and the negative electrode was an aquaporin, and said anode connects with the anode of direct supply through anode terminal; Said negative electrode connects with the negative electrode of direct supply through cathode terminal; Sewage draining exit is arranged on bottom, draining settling chamber, and header is arranged on position, upper middle, draining settling chamber, is connected with the electrolysis outlet conduit; The deslagging pond is provided with slag-drip opening, and slag-drip opening is connected with scum pipe.
2. a kind of nano-catalytic electrolytic flocculation air-floating apparatus as claimed in claim 1 is characterized in that said housing two-layerly is made up of inside and outside, and internal layer adopts bituminous epoxy paint to handle, and skin is a steel plate.
3. a kind of nano-catalytic electrolytic flocculation air-floating apparatus as claimed in claim 1; It is characterized in that in the said electrolyzer electrode being installed; Electrode comprises anode and negative electrode; Spacing between anode and the negative electrode is 2mm ~ 4mm, leaves the gap of 150mm～200mm height between electrolyzer inner anode and negative electrode top and the electrolyzer top.
4. a kind of nano-catalytic electrolytic flocculation air-floating apparatus as claimed in claim 1; It is characterized in that said anode is is substrate with the titanium; It is the dimensional stable anode of the coating of metal oxides of 10～35nm that surface coverage has crystal grain, and anode is a tabular, a kind of shape in circular-arc, cylindric, netted; Said negative electrode is to be the negative electrode of material with titanium, iron, aluminium, stainless steel, zinc, copper, nickel, lead or graphite, and negative electrode is a tabular, a kind of shape in circular-arc, cylindric, netted.
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| CN 201220167677 CN202519115U (en) | 2012-04-19 | 2012-04-19 | Nano-catalysis, electrolysis, flocculation and air-floatation device |
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| CN 201220167677 CN202519115U (en) | 2012-04-19 | 2012-04-19 | Nano-catalysis, electrolysis, flocculation and air-floatation device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936072A (en) * | 2012-04-19 | 2013-02-20 | 波鹰(厦门)科技有限公司 | Nano-catalysis, electrolysis, flocculation and air-floatation device |
| CN104803523A (en) * | 2015-04-13 | 2015-07-29 | 南昌大学 | Electric flocculation and air floatation combined continuous microalgae harvesting device and method |
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| CN108686838A (en) * | 2018-05-16 | 2018-10-23 | 西南科技大学 | A kind of nano-bubble generator |
| CN108793541A (en) * | 2018-09-03 | 2018-11-13 | 大渊环境技术（厦门）有限公司 | A kind of plasma water purifying device |
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2012
- 2012-04-19 CN CN 201220167677 patent/CN202519115U/en not_active Withdrawn - After Issue
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102936072A (en) * | 2012-04-19 | 2013-02-20 | 波鹰(厦门)科技有限公司 | Nano-catalysis, electrolysis, flocculation and air-floatation device |
| CN102936072B (en) * | 2012-04-19 | 2013-10-16 | 波鹰(厦门)科技有限公司 | Nano-catalysis, electrolysis, flocculation and air-floatation device |
| WO2013156002A1 (en) * | 2012-04-19 | 2013-10-24 | 波鹰(厦门)科技有限公司 | Nano catalyst electrolysis flocculation air flotation device |
| CN104803523A (en) * | 2015-04-13 | 2015-07-29 | 南昌大学 | Electric flocculation and air floatation combined continuous microalgae harvesting device and method |
| CN104803523B (en) * | 2015-04-13 | 2016-08-24 | 南昌大学 | The continuous harvesting apparatus of microalgae and method thereof associated with a kind of electricity flocculation-flotation |
| CN105149150A (en) * | 2015-08-24 | 2015-12-16 | 南通普瑞特机械有限公司 | Automatic residue scrapping machine of spray chamber |
| CN108686838A (en) * | 2018-05-16 | 2018-10-23 | 西南科技大学 | A kind of nano-bubble generator |
| CN108821397A (en) * | 2018-07-05 | 2018-11-16 | 深圳市玖品空气净化科技有限公司 | A kind of sewage-treatment plant based on electrofloatation |
| CN108793541A (en) * | 2018-09-03 | 2018-11-13 | 大渊环境技术（厦门）有限公司 | A kind of plasma water purifying device |
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