CN104150690B - A kind of sterilization integrated sewage treatment device and treatment process - Google Patents
A kind of sterilization integrated sewage treatment device and treatment process Download PDFInfo
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- CN104150690B CN104150690B CN201410359660.9A CN201410359660A CN104150690B CN 104150690 B CN104150690 B CN 104150690B CN 201410359660 A CN201410359660 A CN 201410359660A CN 104150690 B CN104150690 B CN 104150690B
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Abstract
A kind of sterilization integrated sewage treatment device, primarily of PACT pond, nanometer aeration cohesion-micro swirl flocculation plant and three grades of recoil screen apparatus compositions.The invention also discloses the method utilizing said apparatus to carry out sterilization sewage disposal.The present invention is directed to various water quality and all have better effects, water outlet is limpid, water quality meets national standard reference, the kitchen garbage, waste-water special high for organic content, turbidity is high, pathogenic bacteria content is high or petrochemical wastewater, its treatment effect is particularly remarkable, reduce by more than 95% by aromatic ring class material in the sewage of this device process, turbidity of sewage reduces by 99%, and effluent quality transparency is high.
Description
Technical field
The present invention relates to a kind of device removing dirty pollutant in water (as: organism, suspended particle, colloid, microorganism, pathogenic bacteria etc.), relate to a kind of sterilization integrated sewage treatment device particularly.
The invention still further relates to the method utilizing said apparatus to carry out sterilization sewage disposal.
Background technology
PACT (Powdered Activated Carbon Treatment, Powdered Activated Carbon process) technique is Powdered Activated Carbon-activated sludge process, in biochemistry pool, powder activated carbon is added on traditional activated sludge process process basis, active sludge take powder activated carbon as carrier, AS-PAC technique (Activated Sludge-Powdered Activated Carbon, Combined Activated Sludge-powdered Activated Carbon) is also called in the U.S..This method is once producing just because its advantage in economy and processing efficiency is widely used in trade effluent as the process of oil refining, petrochemical complex, dyeing waste water, coking chemical waste water, organic chemical waste water, and obviously can improve nitrification effect for municipal sewage treatment, therefore various countries to PACT Technical expression great interest carried out research extensively and profoundly.WAR (Wet Air Regeneration, wet type air regenerates), it is at suitable temperature and pressure condition, (being generally water) oxidising process of occurring in the liquid phase, the biological sludge of surplus can be destroyed and the pollution substance adsorbed in magnesium oxide/absorbent charcoal, re-use to regenerate this discarded gac and to reclaim.Use this technique all to have better treatment effect to all kinds sewage, but its delivery turbidity is comparatively large, suspension pollutant matter and collagenous material more, therefore comparatively excellent technical process need be designed depth optimization process is carried out to its water outlet.
Summary of the invention
The object of the present invention is to provide a kind of sterilization integrated sewage treatment device.
Another object of the present invention is to provide a kind of method utilizing said apparatus to carry out sterilization sewage disposal.
For achieving the above object, sterilization integrated sewage treatment device provided by the invention, primarily of PACT pond, nanometer aeration cohesion-micro swirl flocculation plant and three grades of recoil screen apparatus compositions; Wherein:
The bottom in PACT pond is provided with mudhole, is provided with nanometer aeration dish above mudhole, is provided with stirrer above nanometer aeration dish, and above stirrer, filling is filled with Powdered Activated Carbon-active sludge mixture; PACT pond powder filler gac-active sludge mixture part is connected with concentration basin by pipeline, and this concentration basin connects heat exchanger through WAR reactor, and heat exchanger is connected with PACT pond powder filler gac-active sludge mixture part; The supernatant liquor in PACT pond is by importing in nanometer aeration cohesion-micro swirl flocculation plant;
Spiral transferring mud device and mud mouth is provided with bottom nanometer aeration cohesion-micro swirl flocculation plant, the side that nanometer aeration cohesion-micro swirl flocculation plant connects PACT pond water outlet is main reaction region, for completing nanometer air supporting-agglomeration process, adjacent main reaction zone is flco Engagement Area, adjacent flco Engagement Area be flco secondary Engagement Area; Be provided with micro swirl coagulator in main reaction region, main reaction region inner upper passes into O
2nanometer aeration head, top, main reaction region is provided with the chemicals dosing plant adding coagulating agent; The inclined tube for flco interception precipitation is equipped with in flco Engagement Area; Flco secondary Engagement Area inside is filled with polyacrylic tridimensional network filler, a nanometer aeration head is laid below tridimensional network filler, be provided with water outlet bottom flco secondary Engagement Area, water outlet connects the water-in revolving three grades of recoil screen apparatus by hydro-pump;
The water inlet of three grades of recoil screen apparatus water collecting basins is provided with an influent weir, and water outlet is provided with backflash, and three grades of recoil screen apparatus inside are divided into the water collecting basin on top and flow-dividing bin two parts of bottom by perforated grill, and flow-dividing bin is compact arranged cylindrical shape; Perforated grill top center lays a nanometer aeration head, is embedded in the sieving filler of filling, is provided with a spoiler above sieving filler near influent weir place, is provided with one passes into O near the side of backflash
2aeration tube, aeration tube is provided with multiple pore solarization air cap, and vertically upward, sieving filler is provided with ultrasonic generator to solarization air cap; The below of flow-dividing bin is water tank, water tank outer wall brushing lucifuge blackwash, and the photocatalyst of its inwall uniform loading one deck nonmetal doping, is provided with ultraviolet sterilization lamp bottom it, and is provided with between sterilizing lamp and passes into O
3aeration nanometer aeration head, in water tank, remaining space is filled with semi-conductor load filler; The water outlet of three grades of recoil screen apparatus directly imports outlet sump.
Described sterilization integrated sewage treatment device, wherein, the coagulating agent used in nanometer aeration cohesion-micro swirl flocculation basin is polymerize aluminum chloride+cationic polyacrylamide.
Described sterilization integrated sewage treatment device, wherein, the sieving filler in three grades of recoil screen apparatus is the mixture of quartz sand, modified manganese sand and natural zeolite molecular sieve, and blending ratio is 8:1:1.
Described sterilization integrated sewage treatment device, wherein, nanometer aeration head respectively each connection one nanometer aeration machine of PACT pond, nanometer aeration cohesion-micro swirl flocculation plant and three grades of recoil screen apparatus.
Described sterilization integrated sewage treatment device, wherein, PACT pond, nanometer aeration cohesion-micro swirl flocculation plant, three grades of recoil screen apparatus reaffirm that the nanometer aeration head air inlet of filtering in filler is O
2, stir and clean filler for coagulation; Nanometer aeration head air inlet in the tank of three grades of recoil screen apparatus is O
3, by the production process of nanometer aeration strengthening hydroxyl radical free radical.
The method utilizing said apparatus to carry out sterilization sewage disposal provided by the invention:
Sterilization sewage enters PACT pond, utilizes the adsorption of the powder activated carbon in PACT pond and the biological degradation of biochemical sludge, dirty organic pollutants is changed into CO
2and H
2o, mineralized nitrogen becomes nitrate nitrogen, purifies waste water;
After PACT pond supernatant liquor is imported and is carried out nanometer air supporting-agglomeration process by hydro-pump in the main reaction region in nanometer aeration cohesion-micro swirl flocculation plant, again condense in micro swirl coagulator-flocculate, then from flowing to flco Engagement Area, flco sinks down into reactor bottom at the interception function of inclined tube, timing is regularly discharged from mud mouth under the drive of spiral conveyer, clear liquor overflow is to flco secondary Engagement Area, under the effect of tridimensional network filler, carry out secondary interception, the clear liquid after filtration is discharged from water outlet and is entered three grades of recoil screen apparatus;
In three grades of recoil screen apparatus, the discontinuous work of nanometer aeration head in water tank, air is upwards heaved from perforated grill, be divided into small bubbles, interval breaks up the fine and close crud layer on sieving filler, pollution substance layer is broken into sheet and floats, under the buoyancy of aeration tube and water inlet impact the synergy of flow-stopping plate thrust to the right, overflow is to backflash, the pollutent that sieving filler is retained is concentrated outside remover, mix with water inlet and again process, to extend three grades of recoil screen apparatus work-ing lifes and backwash cycle;
Nanometer aeration head in water tank adopts O
3aeration, because nano bubble has huge quantity, specific surface area, lift velocity characteristic slowly, gas residence time of ducking in drink is long simultaneously, adds gas liquid interfacial area, duration of contact, is beneficial to ozone soluble in water, overcome the shortcoming that ozone is insoluble in water; Microbubble inside there is larger pressure and nano bubble breaks time interface disappear, the chemical energy that surrounding environment acutely changes generation impels and produces more hydroxyl radical free radical OH, strengthens O
3the organic ability of oxygenolysis; And Nano grade O
3bubble and ultraviolet sterilization lamp, semi-conductor load filler coexist in water tank, improve advanced oxidation effect, can effectively improve OH production rate, and the sewage through the process of three grades of recoil screen apparatus enters outlet sump;
The excess sludge produced in PACT pond is through concentration basin concentrating and precipitating, pump in WAR reactor, wet air regeneration is carried out in WAR reactor 2, by the charging and discharging heat exchange of heat exchanger to WAR reactor, the mud that activated carbon adheres to is oxidized to inorganics, and activated carbon is not destroyed, has recovered active activated carbon and returned in PACT pond again and reuse, the residue after WAR reactor 2 processes directly discharges.
Described method, wherein, WAR reactor temperature is 226 ~ 246 DEG C, and pressure is 6 ~ 10Mpa, and the residence time is 1 ~ 2h.
Described method, wherein, the charcoal mud concentration >9% of WAR reactor, suspended solid amount must not lower than 9%, with the sludge quantity providing WAR reactor stable.
Described method, wherein, PACT pond, WAR reactor, heat exchanger outer wall use thermal insulation layer insulation, reduce calorific loss.
Described method, wherein, after WAR reactor, heat exchanger run for some time, adopts the fouling of dust technology cleaning inwall.
The present invention adopts nanometer aeration technological improvement PACT pond to process the sewage of biochemical property difference, utilize the adsorption of powder activated carbon and the biological degradation of biochemical sludge, the toxicity of toxic organic compound in buffering sewage, thus alleviate its disadvantageous effect to biosystem, toxic substance is concentrated and is fixed on filling surface, in treating processes, physical adsorption and bio-metabolic process synergy, change into CO by dirty organic pollutants
2and H
2o, mineralized nitrogen becomes nitrate nitrogen, purifies waste water, and organism and toxic substance processing rate are up to 99%.
The water outlet of PACT pond adopts nanometer aeration cohesion-micro swirl flocculation plant, condenses suspension, collagenous fine particle for flco precipitates.Adopt again the combined action of three grades of recoil screen apparatus, by colloid residual in coagulation water outlet and suspended substance depth type filtration, and remove heavy metal wherein, reduce turbidity of sewage to improve its colourity; In three grades of recoil screen apparatus, nano titanium dioxide crystal excites the free negative ion having oxidizing power under ultra violet lamp as photocatalyst, simultaneously in nanometer aeration process and the energy that excites of ultrasonic wave generating process also can occur and strengthen the generation of free negative ion, reach photocatalysis effect; And free negative ion and its break away from the constraint of covalent linkage after leave room, with nano bubble surface with electric charge produce light electrolysis effect simultaneously, dissolubility pollutant in oxidable decomposition sewage, intoxicating organism etc., and there is the effects such as decolouring, deodorizing, sterilization, sterilization.The present invention is directed to various water quality and all have better effects, water outlet is limpid, and water quality meets national standard reference.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present invention.
Primary clustering nomenclature in accompanying drawing:
1 concentration basin; 2WAR reactor; 3 heat exchangers; 4PACT pond; 5 main reaction region; 6 nanometer aeration heads; 7 chemicals dosing plants; 8 flco Engagement Areas; 9 inclined tubes; 10 nanometer aeration cohesion-micro swirl flocculation plants; 11 flco secondary Engagement Areas; 12 tridimensional network fillers; 13 first valves; 14 second valves; 15 topping-up pumps; 16 influent weirs; 17 spoilers; 18 sieving fillers; 19 3 grades of recoil screen apparatus; 20 aeration tubes; 21 backflashes; 22 perforated grills; 23 flow-dividing bins; 24 outlet sumies; 25 the 3rd valves; 26 first gate valves; 27 second gate valves; 28 semi-conductor load fillers; 29 ultraviolet sterilization lamps; 30 ventpipes; 31 hydro-pumps; 32 water outlets; 33 mud mouths; 34 spiral transferring mud devices; 35 micro swirl coagulators; 36 nanometer aeration machines; 37 mudholes; 38 nanometer aeration dishes; 39 stirrers; 40 powder activated carbons; 41 lift pumps; 42 ultrasonic generators.
Embodiment
Sterilization integrated sewage treatment device of disposing of sewage of the present invention, its primary structure comprises:
The bottom in PACT pond 4 is provided with mudhole 37, nanometer aeration dish 38 is provided with above mudhole 37, stirrer 39 is provided with above nanometer aeration dish 38, Powdered Activated Carbon-active sludge mixture 40 is filled with above stirrer 39, utilize the adsorption of powder activated carbon and the biological degradation of biochemical sludge, dirty organic pollutants is changed into CO
2and H
2o, mineralized nitrogen becomes nitrate nitrogen, purifies waste water, thus realizes sewage qualified discharge.Its treatment effect is good, reduces the volatilization of VOC, solves odor pollution environmental problem.The supernatant liquor in PACT pond 4 is imported in nanometer aeration cohesion-micro swirl flocculation plant 10 by hydro-pump.
PACT pond powder filler gac-active sludge mixture part is connected with concentration basin by pipeline, and this concentration basin connects heat exchanger 3 through WAR reactor 2, and heat exchanger 3 is connected with PACT pond 4 powder filler gac-active sludge mixture part.
Nanometer aeration cohesion-micro swirl flocculation plant 10 is divided into three, left, center, right part (by direction shown in drawing), and bottom is provided with spiral transferring mud device 34.The left side (namely connecting the one end in PACT pond 4) of nanometer aeration cohesion-micro swirl flocculation plant 10 is main reaction region 5, and for completing nanometer air supporting-agglomeration process, central authorities are flco Engagement Area 8, and the right is flco secondary Engagement Area 11.Fill micro swirl coagulator 35 in main reaction region 5, its inner upper has nanometer aeration head 6, and nanometer aeration head 6 is fixed with synthetic glass; Have chemicals dosing plant 7 in order to add coagulating agent on the top of main reaction region 5, coagulating agent is polymerize aluminum chloride (PAC)+cationic polyacrylamide (CPAM).The flco Engagement Area 8 being positioned at interlude is equipped with inclined tube 9 for flco interception precipitation; Flco secondary Engagement Area 11 inside being positioned at the right section is filled with polyacrylic tridimensional network filler 12, a nanometer aeration head is laid below tridimensional network filler 12, set out the mouth of a river 32 bottom tridimensional network filler 12, connected by hydro-pump 31 and revolve three grades of recoil screen apparatus 19.
The present invention, in nanometer aeration cohesion-micro swirl flocculation plant, adopts the agglomeration process of nanometer aeration technological improvement coagulation process, is mainly divided into three steps:
(A) micro-nano aeration air supporting in early stage process: in micro-nano bubble mass transfer process, fine contaminant particle in sewage is trapped in bubble surface or together with bubble adhesion, in bubble uphill process, drive fine contaminant particle to float up to water surface, reach air supporting effect thus realize clear water and suspended particulate, being separated of colloid;
(B) micro-nano aeration dosing in mid-term coagulation process: utilize the gas-liquid two-phase relative movement in the strong impacts of micro-nano bubble generating process and floating-upward process, high-temperature high-pressure state that bubble explosion time local produces and bursting force, violent stirring effect is applied while thermal compensation is carried out to sewage, rapidly coagulating agent is dispersed to staying water everywhere, coagulating agent is mixed with sewage Quick uniform, break up the colloid block wrapping coagulating agent, improve its degree of scatter, promote that colloid collides mutually and be condensed into flco.And after coagulating agent is wrapped to form flco, under nanometer aeration, flco Growing Quality is higher, excessive flco of growing up can be broken into less flco thus recovers and keep flocculation ability (flco crosses conference makes total surface area reduce under the effect of nanometer aeration, adsorptive power declines), the flco that degree of compactness is lower brokenly also can again flocculate into the higher flco of degree of compactness under the shear action of nanometer aeration, is conducive to precipitate and separate.
(C) micro-nano aeration later stage thermal destruction process: the high-temperature high-pressure state utilizing that micro-nano aeration process produces and bubble explosion time local to produce realizes the fracture of flco weakness, so again clash into, in absorption effluent colloid, suspended substance to form more firm flco.
The flocculation process of growing up to allow the flco formed better adsorb de-steady colloid, the present invention uses micro swirl coagulator simultaneously, and the micro-vortex energy of flow that Vortex reactor is formed promotes diffusion and the collision of particulate in water effectively.On the one hand, coagulating agent hydrolysis forms colloid rapid diffusion fully colliding with water-borne glue body under micro swirl effect, makes water-borne glue body de-steady fast; On the other hand, in water, de-steady colloid has more collision opportunity under micro swirl effect, thus has higher aggregation efficiency.
Sewage is after main reaction region nanometer air supporting-agglomeration process, again condense in micro swirl coagulator-flocculate, then from flowing to middle flco Engagement Area, flco sinks down into reactor bottom at the interception function of inclined tube, timing is regularly discharged from mud mouth under the drive of spiral conveyer, clear liquor overflow is to right side flco secondary Engagement Area, and under the effect of high-density tridimensional network filler, carry out secondary interception, the clear liquid after filtration is discharged from water outlet.Secondary Engagement Area filler routine cleaning, opens nanometer aeration head bottom filler simultaneously during cleaning, utilize the collaborative cleaning of nanometer aeration techno-shock, oxidation, air supporting and high temperature action.Water outlet imports three grades of recoil screen apparatus 19 by hydro-pump.
The water inlet of three grades of recoil screen apparatus 19 is provided with an influent weir 16, and water outlet is provided with backflash 21, and three grades of recoil screen apparatus 19 inside are divided into the water collecting basin on top and water tank two parts of bottom by perforated grill 22.The water collecting basin of three grades of recoil screen apparatus 19 inside is connected a ventpipe 30 and leads to air with water tank two portions, to prevent, three grades of recoil screen apparatus internal pressures are too high to be caused device to break even to explode.
Perforated grill 22 is two-layer, middle lay and fixes one deck stainless (steel) wire, and the below of perforated grill 22 is provided with flow-dividing bin 23 partition space of compact arranged cylindrical shape, prevents that local pressure is excessive breaks through perforated grill 22.Catchmenting above perforated grill 22 is laid a nanometer aeration head from central authorities and is embedded in the sieving filler 18 of filling, and the mixture of quartz sand, modified manganese sand and natural zeolite molecular sieve chosen by sieving filler 18, and blending ratio is 8:1:1.Nanometer aeration head in sieving filler 18 is connected with an aerator by under meter.Sieving filler 18 is provided with a spoiler 17 near influent weir 16 place, and be provided with an aeration tube 20 near the side of backflash 21, aeration tube 20 is provided with multiple pore solarization air cap, and solarization air cap vertically upward.Ultrasonic generator 42 is installed in sieving filler 18.The below of flow-dividing bin 23 is water tank, and water tank outer wall brushing lucifuge blackwash, the photocatalyst of its inwall uniform loading one deck nonmetal doping is (as the nano-TiO of carbon doping
2powder), ultraviolet sterilization lamp 29 is installed bottom it, and is provided with O between ultraviolet sterilization lamp 29
3aeration nanometer aeration head, in water tank, remaining space is filled with semi-conductor load filler 28 (as loaded with nano TiO
2solid netted polypropylene filler), without the need to using dispersion agent, and reduce the leakage of catalyzer.
Sewage enters from the influent weir of three grades of recoil screen apparatus, leads as straight up, impinges upon under gravity on flow-stopping plate, directly clash into sieving fillers affect treatment effect to prevent water stream under the physical structure effect of influent weir by horizontal direction; Sewage is through the filtration of sieving filler, and flow to below water tank, the air inlet of the nanometer aeration head in water tank is O
3obtain hydroxyl radical free radical in a large number by nanometer aeration, jointly improve advanced oxidation effect with ultraviolet sterilization lamp and semi-conductor load filler, be wherein rich in the water outlet of hydroxy radical qiao when device carries out backwash simultaneously, wash away sieving filler, accomplish that filler is clean and regenerate preferably.
When using three grades of recoil screen apparatus, the discontinuous work of nanometer aeration head in water collecting basin, air is upwards heaved from perforated grill, be divided into small bubbles, interval breaks up the fine and close crud layer on sieving filler, and pollution substance layer is broken into sheet and floats, under the buoyancy of aeration tube and water inlet impact the synergy of flow-stopping plate thrust to the right, overflow is to backflash, and the pollutent that filler is retained is concentrated outside remover, mixes again process with water inlet.Extend screen apparatus work-ing life and backwash cycle, for the situation that influent turbidity is lower, even without the need to back flushing, constantly can run and purify waste water.
Nanometer aeration head in water tank adopts O
3aeration, because nano bubble has the characteristic such as huge quantity, specific surface area, slowly lift velocity, gas residence time of ducking in drink is long simultaneously, adds gas liquid interfacial area, duration of contact, be beneficial to ozone soluble in water, overcome the shortcoming that ozone is insoluble in water; Microbubble inside there is larger pressure and nano bubble breaks time interface disappear, the chemical energy that surrounding environment acutely changes generation impels and produces more hydroxyl radical free radical OH, strengthens O
3the organic ability of oxygenolysis; And Nano grade O
3bubble and ultraviolet sterilization lamp, semi-conductor load filler coexist in water collecting basin, improve advanced oxidation effect, can effectively improve OH production rate.
Water outlet after the process of three grades of recoil screen apparatus is connected with outlet sump 24 by a hydro-pump 15.
In device of the present invention, the excess sludge (useless carbon mud) that PACT pond 4 produces is through concentration basin 1 concentrating and precipitating, wet air regeneration Wet Air Regeneration (WAR) reactor 2 is pumped into by lift pump 40, air is injected under high-temperature and high-pressure conditions, wet air regeneration is carried out in WAR reactor 2, the mud that activated carbon adheres to is oxidized to inorganics, and activated carbon is not destroyed, recover active carbon to return again in PACT pond 4 and reuse, reduce costs, residue after process is mainly inorganics, can directly discharge.
WAR reactor 2 utilizes the heat energy of extra high pressure steam to start when starting, utilize exothermic heat of reaction can maintain system cloud gray model (self-heating operation) in operation.Heat exchanger 3 is for the charging and discharging heat exchange of WAR reactor 2, and regenerative carbon and charging to reduce energy consumption, reduce the temperature of reaction discharging by heat exchanger 3 heat exchange simultaneously.Maintain self-heating during normal operation to run, reduce energy consumption.PACT pond of the present invention, WAR reactor, heat exchanger outer wall use thermal insulation layer insulation, reduce calorific loss.WAR reactor and heat exchanger be inwall meeting fouling after operation for some time, and dust technology can be adopted to clean.
In device of the present invention, PACT pond, nanometer aeration cohesion-micro swirl flocculation plant and three grades recoil screen apparatus water collecting basin pond be respectively connected a nanometer aeration machine respectively with the nanometer aeration head in tank.During the back flushing of wherein PACT pond, nanometer aeration cohesion-micro swirl flocculation plant, three grades of recoil screen apparatus, the air inlet of nanometer aeration head is O
2, stir and clean filler for coagulation; The nanometer aeration head air inlet of the tank of three grades of recoil screen apparatus is O
3, by the production process of nanometer aeration strengthening hydroxyl radical free radical.
Operationally, WAR reactor temperature is 226 ~ 246 DEG C to device of the present invention, and pressure is 6 ~ 10Mpa, and the residence time is 1 ~ 2h.The charcoal mud concentration >9% of WAR reactor, suspended solid amount must not lower than 9%, to provide the sludge quantity of WAO system stability.
The method of sterilization sewage disposal of the present invention, the sewage adopting nanometer aeration technological improvement PACT pond process biochemical property difference, utilize the adsorption of powder activated carbon and the biological degradation of biochemical sludge, the toxicity of toxic organic compound in buffering sewage, thus alleviate its disadvantageous effect to biosystem, concentrated by toxic substance and be fixed on filling surface, in treating processes, physical adsorption and bio-metabolic process synergy, change into CO by dirty organic pollutants
2and H
2o, mineralized nitrogen becomes nitrate nitrogen, purifies waste water, and organism and toxic substance processing rate are up to 99%.
Suspension, collagenous fine particle, through nanometer aeration cohesion-micro swirl flocculation plant, condense for flco precipitates by the water outlet of PACT pond.Adopt again the combined action of three grades of recoil screen apparatus, by colloid residual in coagulation water outlet and suspended substance depth type filtration, and remove heavy metal wherein, reduce turbidity of sewage to improve its colourity; Dissolubility pollutant, intoxicating organism etc. in the oxidable decomposition sewage of advanced oxidation step of its tank, and there is the effects such as decolouring, deodorizing, sterilization, sterilization.The present invention is directed to various water quality and all have better effects, water outlet is limpid, and water quality meets national standard reference.
Sewage is after in nanometer aeration cohesion-micro swirl flocculation plant, nanometer air supporting-agglomeration process is carried out in main reaction region, again condense in micro swirl coagulator-flocculate, then from flowing to middle flco Engagement Area, flco sinks down into reactor bottom at the interception function of inclined tube, timing is regularly discharged from mud mouth under the drive of spiral conveyer, clear liquor overflow is to right side flco secondary Engagement Area, under the effect of high-density tridimensional network filler, carry out secondary interception, the clear liquid after filtration is discharged from water outlet.Secondary Engagement Area filler routine cleaning, opens nanometer aeration head bottom filler simultaneously during cleaning, utilize the collaborative cleaning of nanometer aeration techno-shock, oxidation, air supporting and high temperature action.Water outlet imports three grades of recoil screen apparatus by hydro-pump.
Three grades of recoil screen apparatus are when normal sieving, and sewage enters from influent weir, leads as straight up, impinge upon under gravity on flow-stopping plate under the physical structure effect of influent weir by horizontal direction, directly clashes into fillers affect treatment effect to prevent water stream; Sewage is through the filtration of filler, and flow to below water tank, the air inlet of the nanometer aeration head in water tank is O
3obtain hydroxyl radical free radical in a large number by nanometer aeration, jointly improve advanced oxidation effect with ultraviolet sterilization lamp and semi-conductor load filler, be wherein rich in the water outlet of hydroxy radical qiao when device carries out backwash simultaneously, wash away sieving filler, accomplish that filler is clean and regenerate preferably.
The present invention adopts three grades of backwashing technologies to carry out back flushing:
One-level back flushing is aeration cycle back flushing, because pollution substance is in the accumulation of filling surface, space infiltration between sewage is difficult to through filler is gone down, back flushing is carried out in sieving process, open three grades of recoil screen apparatus 19 upper left corner topping-up pumps 15, nanometer aeration head 6 above aeration tube 20 intermittently starting porous plate, the discontinuous work of nanometer aeration head in water collecting basin, air is upwards heaved from porous plate, be divided into small bubbles, interval breaks up the fine and close crud layer on sieving filler, pollution substance layer is broken into sheet and floats, impeller effect is produced under the buoyancy of aeration tube and water inlet impact the synergy of flow-stopping plate thrust to the right, clean the fine and close pollutent of filler top layer sheet energetically, overflow is to backflash, the pollutent that filler is retained is concentrated outside remover, mix with water inlet and again process, sewage also can continue the infiltration from molecular sieve space and go down, one-level back flushing can extend screen apparatus work-ing life and backwash cycle, for the situation that influent turbidity is lower, even without the need to back flushing, device constantly can be run and purify waste water.
Secondary back flushing is air pulse back flushing, because turbidity of sewage is too high, causes pollution substance at the bulk deposition of filling surface, only still can not reach the effect continuing sieving by one-level backwash step.Close the first valve 13, first gate valve 26, open the 3rd valve 25, second valve 14, start three grades of recoil screen apparatus 19 lower right corner topping-up pumps 15, aeration tube 20 and two nanometer aeration heads 6, water outlet in outlet sump is imported in water collecting basin.Under the effect of pressure of return water, whole air in water collecting basin are subject to crushing failure at high speed, rise along pore on dividing potential drop storehouse, whole sieving packing layer is at the strong stirring of ascending air, rotational flow under the impact force action of aeration tube air-flow and nanometer aeration head, pollution substance fragmentation is floated, under the buoyancy of aeration tube and water inlet impact the synergy of flow-stopping plate thrust to the right, overflow mixes to backflash with initially intaking, treat that the water surface declines fast, after filtering rate is stablized again, close three grades of recoil screen apparatus 19 lower right corner topping-up pumps 15, nanometer aeration head 6 below porous plate, 3rd valve 25, second valve 14, open the first valve 13, first gate valve 26, proceed sieving process.
Three grades of back flushinges are the back flushing of aeration turbulent flow, and now I and II back flushing has been not enough to covering, the obstructing problem of address contamination confrontation filler, and sewage must not gather in a large number and filtered.Now close the first valve 13, first gate valve 26, open the 3rd valve 25, second valve 14, start three grades of recoil screen apparatus 19 lower right corner topping-up pumps 15, aeration tube 20 and two nanometer aeration heads 6, ultrasonic generators 42, water outlet in outlet sump is imported in water collecting basin in a large number.(1) water collecting basin inner air stirs along the rising of porous plate pore, and bottom filler, nanometer aeration head starts aeration, and above filler, turbine constantly rotates; (2) utilize the collaborative cleaning of nanometer aeration techno-shock, oxidation, air supporting and high temperature action, top filler presents turbulence state, carry out random high-speed motion state, filler phase mutual friction under the surging force of current vortex and the shear action of bubble, the organic pollutant that filler adheres to can be removed, and obtains comparatively pure filler; (3) utilize ultrasonic generator to produce ultrasonic wave in liquid medium, cavitation effect is produced at sieving filling surface, the shockwave formed when cavitation steam bubble breaks in closing course, the surge pressure of thousands of air pressure can be produced around it, act on filling surface and destroy viscosity between dirt, and make them be dispersed in backwash liquor rapidly, thus reach the effect of filling surface cleaning.(4), after air emptying, the water outlet of outlet sump continues to import, the water outlet of being rich in hydroxy radical qiao rinse turbulence state filler particles surface and micropore, peel off pollution substance, filler is regenerated.And pollution substance under water flow impact pressure and right side aeration tube air supporting effect constantly to floating up to the water surface, flow out from left end influent weir and right-hand member backflash and mix with initially intaking.Through three grades of back flushinges, internal contamination thing by clean-drain totally.
Conventional sand filtration is not disturbance layer of sand in filtration procedure, and current are flow through between sand fine gap.Usual employing not disturbance layer of sand, compacting filler, increase hydraulic pressure, the means such as additional trellis improve sand filtration process on sand, allow current flow through between sand fine gap, and pollution substance rest on the top layer of layer of sand.The present invention utilizes disturbance filler top layer, smooth pass through of preventing pollution material buildup to current forms resistance, utilize the means modifying device such as surging force and shearing force of advanced oxidation, nanometer aeration, bubble simultaneously, utilize the filler such as molecular sieve, manganese sand to be optimized design, finally use three grades of back flushinges etc. to improve treating processes.The rejection effect of this device to suspended substances such as colloid, fiber, algae is good, for the lower water quality of turbidity even without the need to back flushing, treating processes can be completed, there is removal stink simultaneously, kill the microorganism such as bacterium, pathogenic bacteria, decompose effect of the biodegradable organic compounds such as a small amount of remaining surface activator, polychlorobiphenyl of difficult degradation.
The nano-TiO of carbon doping of the present invention
2the preparation of powder: adopt sluggish precipitation and hydrothermal method two step process to prepare the nano-TiO of carbon doping
2.With titanium sulfate and urea for forerunner, glucose is carbon source, concrete preparation process is as follows: get 6.48g27 titanium sulfate and 3.24g54 urea (mol ratio of titanium sulfate and urea is 1:2) is dissolved in deionized water, add appropriate glucose 0.6 again to stir, 1:2:0.023 reacts 2h under the condition of 90 DEG C.Question response terminates rear taking-up reactants dry, is repeatedly washed to neutrality, again dry, obtains the nano-TiO of carbon doping with ball mill grinding
2powder.
Nano-TiO of the present invention
2the method of powder load on filler: the tridimensional network filler adopting polypropylene material, by nano-TiO
2powder mixes with deionized water (powder is 1:20 with the mass ratio of water), emulsion is become with ultrasonic echography, the tridimensional network filler of cleaning is immersed the titanate coupling agent mixed with ethanol 1:1, slowly stir for some time, then filler is taken out and put into TiO
2continue in emulsion to stir for some time, put into dry (less than the 85 DEG C) 2h of baking oven after taking-up, i.e. obtained loaded with nano TiO
2polypropylene suspension filler, its outward appearance is faint yellow, and rete is more even.
In one embodiment of the present of invention, process COD is up to the kitchen garbage, waste-water 30L of 20000mg/L, first two hours in PACT pond COD content be reduced to 1000mg/L rapidly by 20000mg/L, the organic content of the 3rd hour waste water in nanometer aeration cohesion-micro swirl flocculation plant decreases 99%, turbidity reduces 80%, three grades of recoil screen apparatus only use 10-15min, and organism, turbidity and pathogenic bacteria clearance all reach 100%.
Claims (10)
1. a sterilization integrated sewage treatment device, primarily of Powdered Activated Carbon treating pond, nanometer aeration cohesion-micro swirl flocculation plant and three grades of recoil screen apparatus compositions; Wherein:
The bottom of Powdered Activated Carbon treating pond is provided with mudhole, is provided with nanometer aeration dish above mudhole, is provided with stirrer above nanometer aeration dish, and above stirrer, filling is filled with Powdered Activated Carbon-active sludge mixture; Powdered Activated Carbon treating pond powder filler gac-active sludge mixture part is connected with concentration basin by pipeline, this concentration basin connects heat exchanger through wet type air regeneration reactor, and heat exchanger is connected with Powdered Activated Carbon treating pond powder filler gac-active sludge mixture part; The supernatant liquor of Powdered Activated Carbon treating pond is by importing in nanometer aeration cohesion-micro swirl flocculation plant;
Spiral transferring mud device and mud mouth is provided with bottom nanometer aeration cohesion-micro swirl flocculation plant, the side that nanometer aeration cohesion-micro swirl flocculation plant connects Powdered Activated Carbon treating pond water outlet is main reaction region, for completing nanometer air supporting-agglomeration process, adjacent main reaction zone is flco Engagement Area, adjacent flco Engagement Area be flco secondary Engagement Area; Be provided with micro swirl coagulator in main reaction region, main reaction region inner upper passes into O
2nanometer aeration head, top, main reaction region is provided with the chemicals dosing plant adding coagulating agent; The inclined tube for flco interception precipitation is equipped with in flco Engagement Area; Flco secondary Engagement Area inside is filled with polyacrylic tridimensional network filler, a nanometer aeration head is laid below tridimensional network filler, be provided with water outlet bottom flco secondary Engagement Area, water outlet connects the water-in revolving three grades of recoil screen apparatus by hydro-pump;
The water inlet of three grades of recoil screen apparatus water collecting basins is provided with an influent weir, and water outlet is provided with backflash, and three grades of recoil screen apparatus inside are divided into the water collecting basin on top and flow-dividing bin two parts of bottom by perforated grill, and flow-dividing bin is compact arranged cylindrical shape; Perforated grill top center lays a nanometer aeration head, is embedded in the sieving filler of filling, is provided with a spoiler above sieving filler near influent weir place, is provided with one passes into O near the side of backflash
2aeration tube, aeration tube is provided with multiple pore solarization air cap, and vertically upward, sieving filler is provided with ultrasonic generator to solarization air cap; The below of flow-dividing bin is water tank, water tank outer wall brushing lucifuge blackwash, and the photocatalyst of its inwall uniform loading one deck nonmetal doping, is provided with ultraviolet sterilization lamp bottom it, and is provided with between sterilizing lamp and passes into O
3aeration nanometer aeration head, in water tank, remaining space is filled with semi-conductor load filler; The water outlet of three grades of recoil screen apparatus directly imports outlet sump.
2. sterilization integrated sewage treatment device according to claim 1, wherein, the coagulating agent used in nanometer aeration cohesion-micro swirl flocculation basin is polymerize aluminum chloride+cationic polyacrylamide.
3. sterilization integrated sewage treatment device according to claim 1, wherein, the sieving filler in three grades of recoil screen apparatus is the mixture of quartz sand, modified manganese sand and natural zeolite molecular sieve, and volume mixture ratio is 8:1:1.
4. sterilization integrated sewage treatment device according to claim 1, wherein, nanometer aeration head each connection one nanometer aeration machine respectively of the aeration plate of Powdered Activated Carbon treating pond, nanometer aeration cohesion-micro swirl flocculation plant and three grades of recoil screen apparatus.
5. sterilization integrated sewage treatment device according to claim 1, wherein, the nanometer aeration head air inlet in Powdered Activated Carbon treating pond, nanometer aeration cohesion-micro swirl flocculation plant, three grades of recoil screen apparatus sieving fillers is O
2, stir and clean filler for coagulation; Nanometer aeration head air inlet in the tank of three grades of recoil screen apparatus is O
3, by the production process of nanometer aeration strengthening hydroxyl radical free radical.
6. utilize sterilization integrated sewage treatment device described in claim 1 to carry out the method for sterilization sewage disposal:
Sterilization sewage enters Powdered Activated Carbon treating pond, utilizes the adsorption of the powder activated carbon in Powdered Activated Carbon treating pond and the biological degradation of biochemical sludge, dirty organic pollutants is changed into CO
2and H
2o, mineralized nitrogen becomes nitrate nitrogen, purifies waste water;
After Powdered Activated Carbon treating pond supernatant liquor is imported and is carried out nanometer air supporting-agglomeration process by hydro-pump in the main reaction region in nanometer aeration cohesion-micro swirl flocculation plant, again condense in micro swirl coagulator-flocculate, then from flowing to flco Engagement Area, flco sinks down into reactor bottom at the interception function of inclined tube, timing is regularly discharged from mud mouth under the drive of spiral conveyer, clear liquor overflow is to flco secondary Engagement Area, under the effect of tridimensional network filler, carry out secondary interception, the clear liquid after filtration is discharged from water outlet and is entered three grades of recoil screen apparatus;
In three grades of recoil screen apparatus, the discontinuous work of nanometer aeration head in water tank, air is upwards heaved from perforated grill, be divided into small bubbles, interval breaks up the fine and close crud layer on sieving filler, pollution substance layer is broken into sheet and floats, under the buoyancy of aeration tube and water inlet impact the synergy of flow-stopping plate thrust to the right, overflow is to backflash, the pollutent that sieving filler is retained is concentrated outside remover, mix with water inlet and again process, to extend three grades of recoil screen apparatus work-ing lifes and backwash cycle;
Nanometer aeration head in water tank adopts O
3aeration, because nano bubble has huge quantity, specific surface area, lift velocity characteristic slowly, gas residence time of ducking in drink is long simultaneously, adds gas liquid interfacial area, duration of contact, is beneficial to ozone soluble in water, overcome the shortcoming that ozone is insoluble in water; Microbubble inside there is larger pressure and nano bubble breaks time interface disappear, the chemical energy that surrounding environment acutely changes generation impels and produces more hydroxyl radical free radical OH, strengthens O
3the organic ability of oxygenolysis; And Nano grade O
3bubble and ultraviolet sterilization lamp, semi-conductor load filler coexist in water tank, improve advanced oxidation effect, can effectively improve OH production rate, and the sewage through the process of three grades of recoil screen apparatus enters outlet sump;
The part effluent recycling of three grades of recoil screen apparatus is to Powdered Activated Carbon treating pond simultaneously, and regulating water quality also stimulates microbial physiology movable, and screening forms seed activity group, and group has the ion exchanging function of molecular sieve;
The excess sludge produced in Powdered Activated Carbon treating pond is through concentration basin concentrating and precipitating, pump in wet type air regeneration reactor, wet air regeneration is carried out in wet type air regeneration reactor, by the charging and discharging heat exchange of heat exchanger to wet type air regeneration reactor, the mud that activated carbon adheres to is oxidized to inorganics, and activated carbon is not destroyed, recover active activated carbon to reuse in returns activated carbon treatment pond, the residue after the process of wet type air regeneration reactor directly discharges again.
7. method according to claim 6, wherein, in wet type air regeneration reactor, temperature is 226 ~ 246 DEG C, and pressure is 6 ~ 10Mpa, and the residence time is 1 ~ 2h.
8. method according to claim 6, wherein, the charcoal mud concentration >9% of wet type air regeneration reactor, suspended solid amount must not lower than 9%, with the sludge quantity providing wet type air regeneration reactor stable.
9. method according to claim 6, wherein, Powdered Activated Carbon treating pond, wet type air regeneration reactor, heat exchanger outer wall use thermal insulation layer insulation, reduce calorific loss.
10. method according to claim 6, wherein, after wet type air regeneration reactor, heat exchanger run for some time, adopts the fouling of dust technology cleaning inwall.
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| CN104355476B (en) * | 2014-11-25 | 2016-06-01 | 成都国盛环境保护技术有限公司 | A kind of technique for the overall process up to standard of oilfield drilling waste and device |
| CN104787862B (en) * | 2015-04-27 | 2017-03-01 | 中国环境科学研究院 | A kind for the treatment of method and apparatus of eutrophication water |
| CN105621808A (en) * | 2016-02-05 | 2016-06-01 | 北京建筑大学 | Adsorptive aeration filter tank, artificial wetland and ecological pond coupling device and application thereof |
| CN105731723A (en) * | 2016-02-05 | 2016-07-06 | 北京建筑大学 | Coupling device of adsorption and aeration filter tank and soil infiltration-ecological pond and application of coupling device |
| CN105693018A (en) * | 2016-02-05 | 2016-06-22 | 北京建筑大学 | Sequence-batch-type adsorption aerating filter and vertical flow artificial wetland coupling device and application thereof |
| CN105541048A (en) * | 2016-02-05 | 2016-05-04 | 北京建筑大学 | Sequencing batch adsorption aerating filter and slow rate soil infiltration tank coupling device and application thereof |
| CN105712578A (en) * | 2016-02-05 | 2016-06-29 | 北京建筑大学 | Sequencing batch type adsorption aerating filter and land percolation-constructed wetland coupling device |
| CN105668928A (en) * | 2016-02-05 | 2016-06-15 | 北京建筑大学 | Coupling device of sequencing-batch adsorption aerating filter and underground soil infiltration device and application of coupling device |
| CN107597058B (en) * | 2016-07-12 | 2019-12-24 | 中国石油化工股份有限公司 | Method for effectively removing scale of active carbon wet air regeneration system |
| CN108862779B (en) * | 2018-07-24 | 2021-06-29 | 苏州水木康桥环境工程技术有限公司 | Activated carbon wastewater purification and regeneration device and purification and regeneration method thereof |
| CN113880308B (en) * | 2021-11-05 | 2023-02-03 | 无锡市德林环保集团有限公司 | Integrated high-efficiency combined turbid-ring water purifier |
| CN114835341B (en) * | 2022-05-17 | 2023-02-03 | 广东北控环保装备有限公司 | Village and town sewage treatment device and treatment process |
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