CN104150695A - Device and method for carrying out deep purification treatment on effluent by utilizing rotating biological contactors - Google Patents
Device and method for carrying out deep purification treatment on effluent by utilizing rotating biological contactors Download PDFInfo
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- CN104150695A CN104150695A CN201410359865.7A CN201410359865A CN104150695A CN 104150695 A CN104150695 A CN 104150695A CN 201410359865 A CN201410359865 A CN 201410359865A CN 104150695 A CN104150695 A CN 104150695A
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Abstract
The invention provides a device for carrying out deep purification treatment on effluent by utilizing rotating biological contactors. The device mainly comprises a nano aerated ablation device, a rotating biological contactor pool, a nano aerated coagulation-micro-vortex flocculation device, a three-stage backwashing and screening device and a photocatalytic degradation reaction device. The invention also discloses a method for treating sewage by utilizing the device. The device is easy to operate and convenient to maintain, is especially suitable for treating wastewater which is in large quantity, is difficult to degrade and has high turbidity.
Description
Technical field
The present invention relates to the device that a kind of blodisc goes out advanced water treatment processing.
The invention still further relates to the concrete grammar that utilizes said apparatus deep purifying sewage.
Background technology
Present stage, some are difficult to biodegradable organism and enter in a large number in waste water, make waste water become pollution the most seriously, one of the most unmanageable trade effluent.So, still can not meet actual needs taking biochemical process as main wastewater treatment means.Therefore, each state all carries out new biological treatment and efficiently exploration and the research of bacterium and new chemical medicament specially in recent years.
Manufacturing district waste water has that concentration is high, toxicity is large, be difficult to the features such as biological degradation, solve this class organic industrial sewage and process problem, chemical oxygen demand (COD) emission reduction tasks for the heavy polluted industry such as chemical industry, pharmacy is most important, and conventional blodisc, sand filtering device and aeration mode are less to this class waste water effect.
Summary of the invention
The object of the present invention is to provide a kind of blodisc water outlet advanced treatment apparatus.
Another object of the present invention is to provide a kind of method of utilizing said apparatus blodisc water outlet to be carried out to advanced treatment.
For achieving the above object, blodisc provided by the invention goes out the device of advanced water treatment processing, is mainly made up of nanometer aeration ablating device, blodisc pond, nanometer aeration cohesion-micro swirl flocculation plant, three grades of recoil screen apparatus and photocatalytic degradation reaction unit; Wherein:
Nanometer aeration ablating device bottom offers mud discharging mouth, and nanometer aeration ablating device inside is positioned at mud discharging mouth top and is provided with nanometer aeration dish, and the top of nanometer aeration dish is provided with stirrer; A side in nanometer aeration ablating device is provided with heating zone and temperature-sensitive control head, and heating zone and temperature-sensitive control head are by temperature controller control; Blodisc pond is led in the water outlet of nanometer aeration ablating device;
The many groups of blodiscs that are arranged in parallel are installed in blodisc pond, by body of wall, blodisc are divided into Liang Ge district, respectively organize between the rotating shaft of blodisc by geartransmission, and blodisc has the area of 20-60% to be immersed in blodisc pond; At the bottom of the pond in blodisc pond, be covered with flow model molecular sieve filling, blodisc inside is filled with molecular sieve filling;
Blodisc is pie hollow iron, the inner completely polyethylene ball of filling of iron cage, polyethylene ball inside is hollow, spherome surface is covered with square opening, polyethylene ball inside is filled with flyash molecular sieve filling, compactedness is 70%, to ensure the mobility of filler, filling surface microbial film is come off under shock rubbing effect; Nanometer aeration cohesion-micro swirl flocculation plant is led in the water outlet in blodisc pond;
Nanometer aeration cohesion-micro swirl flocculation plant bottom is provided with spiral transferring mud device and mud mouth, the side that nanometer aeration cohesion-micro swirl flocculation plant connects blodisc pond water outlet is main reaction region, be used for nanometer air supporting-agglomeration process, adjacent main reaction region is flco Engagement Area, adjacent flco Engagement Area be flco secondary Engagement Area; In main reaction region, be provided with micro swirl coagulator, main reaction region inner and upper passes into O
2nanometer aeration head, top, main reaction region is provided with to add the chemicals dosing plant of coagulating agent; In flco Engagement Area, be equipped with the inclined tube for flco interception precipitation; Flco secondary Engagement Area inside is filled with polyacrylic tridimensional network filler, a nanometer aeration head is laid in tridimensional network filler below, flco secondary Engagement Area bottom is provided with water outlet, and water outlet connects the water-in that revolves three grades of recoil screen apparatus by hydro-pump;
The water inlet in three grades of recoil screen apparatus ponds 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 two parts of the flow-dividing bin of bottom by perforated grill, and flow-dividing bin is compact arranged cylindric; Perforated grill top center is laid a nanometer aeration head, is embedded in the sieving filler of filling, and sieving filler top is provided with a spoiler near influent weir place, is provided with one passes into O near a side of backflash
2aeration tube, aeration tube is provided with multiple pore solarization air caps, 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, its bottom is provided with ultraviolet sterilization lamp, and between sterilizing lamp, is provided with and passes into O
3aeration nanometer aeration head, remaining space-filling has semi-conductor load filler in water tank; The direct lead-in light catalytic degradation reaction of the water outlet device of three grades of recoil screen apparatus;
Photocatalytic degradation reaction unit inwall uniform loading one deck nonmetal doping photocatalyst, bottom offers mud discharging mouth, be positioned at mud discharging mouth top and be provided with nanometer aeration dish, on nanometer aeration dish, be provided with low pressure ultraviolet mercury lamp framework, on low pressure ultraviolet mercury lamp framework, low pressure ultraviolet mercury lamp is installed, low pressure ultraviolet mercury lamp is provided with waterproof sleeve.Photocatalytic degradation reaction unit remaining space inside is filled with semi-conductor load filler; The top of photocatalytic degradation reaction unit is provided with tinted shade.
Described blodisc goes out the device of advanced water treatment processing, wherein, the water outlet of nanometer aeration ablating device is delivered to elevated tank by laying pipe network, and the unpowered waterwheel that the sewage of being discharged by elevated tank is just being installed blodisc pond utilizes gravitional force to be converted into kinetic energy and promotes waterwheel rotation; Unpowered waterwheel is coaxial with a gear, this gear and other multiple engaged gears, and on all gears, lay a sprocket wheel, and the transmission between auxiliary waterwheel and gear and gear, and then the coaxial blodisc of drive and gear rotates in contact reacts groove.
Described blodisc goes out the device of advanced water treatment processing, and wherein, the coagulating agent using in nanometer aeration cohesion-micro swirl flocculation basin is polymerize aluminum chloride+cationic polyacrylamide.
Described blodisc goes out the device of advanced water treatment processing, and wherein, the sieving filler in three grades of recoil screen apparatus is chosen quartz sand, modified manganese sand mixes with natural zeolite molecular sieve, and particle diameter is 0.5-1.2mm, and nonuniformity coefficient is 2.
Described blodisc goes out the device of advanced water treatment processing, wherein, in the sieving pond of nanometer aeration ablating device, nanometer aeration cohesion-micro swirl flocculation plant, three grades of recoil screen apparatus and water collecting basin and in photocatalytic degradation reaction unit, nanometer aeration head is connected with a nanometer aeration machine respectively.
Described blodisc goes out the device of advanced water treatment processing, and wherein, when the back flushing of nanometer aeration ablating device, 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; Water collecting basin and the air inlet of photocatalytic degradation reaction unit nanometer aeration head of three grades of recoil screen apparatus are O
3, strengthen the production process of hydroxyl radical free radical by nanometer aeration.
The method of utilizing device that above-mentioned blodisc goes out advanced water treatment processing to carry out sewage disposal provided by the invention:
Sewage enters after nanometer aeration ablating device, the bubble that nanometer aeration ablating device produces is evenly sneaked in sewage, the in the situation that of high-temperature nano aeration, sewage is carried out to nanometer aeration processing, in sewage, tiny flco floats with nano bubble, remove with Despumation device by air supporting principle, in sewage, residual biodegradable organic compounds decomposes under the effect of nanometer aeration advanced oxidation, melt, pathogenic bacteria and microorganism are inactivated, and transparency and the colourity of sewage are improved, pollution substance in the flow model molecular sieve filling absorption sewage of nanometer aeration ablating device bottom, suppress saprobia toxicity to improve biological sewage treatment effect, the water outlet after treatment of nanometer aeration ablating device is led in blodisc pond,
The inner molecular sieve filling of filling in blodisc pond further adsorbs the pollution substance in sewage, suppresses saprobia toxicity to improve biological sewage treatment effect; The flyash molecular sieve filling of blodisc inside, because its compactedness is 70%, has ensured the mobility of flyash molecular sieve filling, and flyash molecular sieve filling surface biological film is come off under shock rubbing effect; In the water outlet after treatment of blodisc pond is directed at nanometer aeration cohesion-micro swirl flocculation plant;
Nanometer air supporting-agglomeration process is carried out in water outlet in the main reaction region of nanometer aeration cohesion-micro swirl flocculation plant, again condense-flocculate in micro swirl coagulator, 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 and is entered three grades of recoil screen apparatus from water outlet;
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, intermittently break up the fine and close crud layer on sieving filler, pollution substance layer is broken into sheet and floats, impact flow-stopping plate to the right under the synergy of thrust in the buoyancy of aeration tube and water inlet, overflow is to backflash, the pollutent that sieving filler is held back is concentrated outside remover, mix again and process with water inlet, 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, the characteristic such as lift velocity slowly, simultaneously gas residence time of ducking in drink long, increased gas-to-liquid contact area, duration of contact, be beneficial to ozone soluble in water, overcome ozone and be insoluble in the shortcoming of water; Microbubble inside has larger pressure and nano bubble while breaking, and interface disappears, and 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, enter and in photocatalytic degradation reaction unit, carry out photocatalytic degradation reaction through the sewage of three grades of recoil screen apparatus processing.
Described method, wherein, the hydraulic detention time in nanometer aeration ablating device exceedes 30min; Hydraulic detention time in blodisc pond exceedes 2h; In photocatalytic degradation reaction unit, hydraulic detention time exceedes 15min.
Described method, wherein, the sieving pond of nanometer aeration ablating device, nanometer aeration cohesion-micro swirl flocculation plant, three grades of recoil screen apparatus is connected respectively a nanometer aeration machine with the nanometer aeration head in tank and in photocatalytic degradation reaction unit.
Described method, wherein, when the back flushing of nanometer aeration ablating device, 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; Tank and the air inlet of photocatalytic degradation reaction unit nanometer aeration head of three grades of recoil screen apparatus are O
3, strengthen the production process of hydroxyl radical free radical by nanometer aeration.
The present invention has adopted the nanometer aeration ablating device that collects wet oxidation principle, nanometer aeration technical project to carry out pre-treatment to sewage, improve sewage oxygen level and biodegradability, then use blodisc microbial method, reduce BOD and other pollution substance content, finally use condense-flocculation treatment of aeration cohesion-micro swirl flocculation plant, three grades of back flushing sieving impurity screenings, to reduce turbidity of sewage, reduce the load to the degraded of the advanced oxidation degree of depth, improve sewage transparency, strengthen the sterilizing virus killing effect to sewage.In three grades of recoil screen apparatus, nano titanium dioxide crystal excites the free negative ion that has 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 there is and strengthen the generation of free negative ion, reach photocatalysis effect; And free negative ion with and break away from the constraint of covalent linkage after leave room, with nano bubble surface with electric charge produce micro-electrolysis effectiveness simultaneously, modern design of the present invention, there is easy handling, be convenient to safeguard, to complicated organic pollution materials (as surfactant, the materials such as environmental classes hormone) advantage such as effect is remarkable, be particularly useful for the wastewater treatment of big yield, difficult degradation, high turbidity.
Brief description of the drawings
Fig. 1 is the structural representation of blodisc water outlet advanced treatment apparatus of the present invention.
Primary clustering nomenclature in accompanying drawing:
1 temperature controller; 2 heating zones; 3 temperature-sensing probes; 4 nanometer aeration ablating devices; 5 blodiscs; 6 blodisc ponds; 7 bodies of wall; 8 main reaction region; 9 nanometer aeration heads; 10 chemicals dosing plants; 11 flco Engagement Areas; 12 inclined tubes; 13 nanometer aeration cohesion-micro swirl flocculation plants; 14 flco secondary Engagement Areas; 15 tridimensional network fillers; 16 first valves; 17 second valves; 18 topping-up pumps; 19 influent weirs; 20 spoilers; 21 mixed fillers; 22 3 grades of recoil screen apparatus; 23 aeration tubes; 24 backflashes; 25 perforated grills; 26 flow-dividing bins; 27 photocatalytic degradation reaction units; 28 nanometer aeration machines; 29 semi-conductor load fillers; 30 nanometer aeration dishes; 31 ultraviolet lamp frameworks; 32 ultraviolet sterilization lamps; 33 the 3rd valves; 34 first gate valves; 35 second gate valves; 36 ventpipes; 37 hydro-pumps; 38 water outlets; 39 mud mouths; 40 spiral conveyers; 41 micro swirl coagulators; 42 mudholes; 43 stirrers; 44 ultrasonic generators.
Embodiment
Refer to Fig. 1.Blodisc provided by the invention goes out the device of advanced water treatment processing, and its primary structure comprises:
Nanometer aeration ablating device 4 bottoms offer mud discharging mouth 42, and nanometer aeration ablating device 4 inside are positioned at mud discharging mouth 42 tops and are provided with nanometer aeration dish 30, and nanometer aeration dish 30 connects a nanometer aeration machine 28, and the top of nanometer aeration dish 30 is provided with stirrer 43.A side in nanometer aeration ablating device 4 is provided with heating zone 2 and temperature-sensitive control head 3, and heating zone 2 and temperature-sensitive control head 3 are controlled by temperature controller 1.The bubble that aeration produces is evenly sneaked in sewage, the in the situation that of high-temperature nano aeration, sewage is carried out to nanometer aeration processing, and in nanometer aeration ablating device, hydraulic detention time preferably should exceed 30min.In sewage, tiny flco floats with nano bubble, remove with Despumation device by air supporting principle, in sewage, residual biodegradable organic compounds decomposes, melts under the effect of nanometer aeration advanced oxidation, and pathogenic bacteria and microorganism are inactivated, and transparency, the colourity of sewage also increase.Blodisc pond 6 is led in the water outlet of nanometer aeration ablating device 4.
The many groups of blodiscs that are arranged in parallel 5 are installed in blodisc pond 6, utilize body of wall 7 that blodisc 5 is divided into Liang Ge district, respectively organize between the rotating shaft of blodisc by geartransmission, and blodisc has the area of 20-60% to be immersed in blodisc pond.At the bottom of the pond in blodisc pond 6, be covered with flow model molecular sieve filling, blodisc 5 inside are filled with molecular sieve filling.Blodisc 5 adopts dry pie hollow iron cage composition, the inner completely polyethylene ball of filling of iron cage, polyethylene ball inner hollow, spherome surface is covered with square opening, be beneficial to microbial film internal layer microorganism and directly from liquid phase, obtain matrix, a kind of light flyash molecular sieve filling of the inner filling of polyethylene ball, compactedness is 70%, to ensure the mobility of filler, filling surface microbial film is come off under shock rubbing effect.
The water outlet of nanometer aeration ablating device 4 is delivered to elevated tank by laying pipe network, the sewage of being discharged by elevated tank is just to unpowered waterwheel, sewage falls into the bucket of the unpowered waterwheel in below from drain valve for high-level cistern, utilize gravitional force to be converted into kinetic energy and promote waterwheel rotation.Unpowered waterwheel is coaxial with a gear, this gear and other multiple engaged gears, and on all gears, lay a sprocket wheel, and the transmission between auxiliary waterwheel and gear and gear, and then the coaxial blodisc of drive and gear rotates in contact reacts groove.
Ammonia Nitrogen in Municipal Wastewater concentration is about 80mg/L, can produce bio-toxicity, the flow model molecular sieve filling of nanometer aeration ablating device 4 bottoms and the inner molecular sieve filling of filling of blodisc 5 have huge specific surface area and strong adsorptivity, the pollution substances such as the ammonia nitrogen in absorption sewage, suppress saprobia toxicity to improve biological sewage treatment effect, through the absorption of blodisc 5 interior molecular sieve fillings, ammonia nitrogen concentration can be lower than 40mg/L, microbial growth in biological treatment process preferably, the blodisc pool inner water power residence time preferably should exceed 2h.
Nanometer aeration cohesion-micro swirl flocculation plant 13 is led in the water outlet in blodisc pond 6.
Nanometer aeration cohesion-micro swirl flocculation plant 13 is divided into three of left, center, right parts (by direction shown in drawing), and bottom is provided with spiral transferring mud device 40.The left side (connecting the one end in blodisc pond 6) of nanometer aeration cohesion-micro swirl flocculation plant 13 is main reaction region 8, and for completing nanometer air supporting-agglomeration process, central authorities are flco Engagement Area 11, and the right is flco secondary Engagement Area 14.Main reaction region 8 interior filling micro swirl coagulator 41, inner and upper has nanometer aeration head 9, and nanometer aeration head 9 use synthetic glass are fixed; Have chemicals dosing plant 10 on the top of main reaction region 8 in order to add coagulating agent, coagulating agent is polymerize aluminum chloride (PAC)+cationic polyacrylamide (CPAM).The flco Engagement Area 11 that is positioned at interlude is equipped with inclined tube 12 for flco interception precipitation; Flco secondary Engagement Area 14 inside that are positioned at the right section are filled with polyacrylic tridimensional network filler 15, a nanometer aeration head is laid in tridimensional network filler 15 belows, tridimensional network filler 15 bottoms set out the mouth of a river 38, are connected and are revolved three grades of recoil screen apparatus 22 by hydro-pump 37.
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, realize separating of clear water and suspended particulate, colloid thereby reach air supporting effect;
(B) micro-nano aeration dosing in mid-term coagulation process: utilize local high-temperature high-pressure state and the bursting force producing of gas-liquid two-phase relative movement, bubble explosion time in intense impact power and the floating-upward process of micro-nano bubble generating process, when being carried out to thermal compensation, sewage applies violent stirring effect, rapidly coagulating agent is dispersed to staying water everywhere, coagulating agent is mixed with sewage Quick uniform, break up the colloid piece that wraps coagulating agent, improve its degree of scatter, promote colloid mutually to collide and be condensed into flco.
And be wrapped to form after flco when coagulating agent, under nanometer aeration, flco Growing Quality is higher, thereby the excessive flco of growing up can be broken into less flco under the effect of nanometer aeration to be recovered and keeps flocculation ability (flco is crossed conference reduces total surface area, adsorptive power declines), the flco that degree of compactness is lower can brokenly also again flocculate into the flco that degree of compactness is higher under the shear action of nanometer aeration, is conducive to precipitate and separate.
(C) micro-nano aeration later stage thermal destruction process: utilize high-temperature high-pressure state that micro-nano aeration process produces and the local generation of bubble explosion time to realize the fracture of flco weakness, and then again clash into, adsorb colloid in sewage, suspended substance to form more firm flco.
(D) in order to allow the flco forming better adsorb the flocculation process that takes off steady colloid and grow up, the present invention uses micro swirl coagulator simultaneously, and the micro-vortex energy of flow that Vortex reactor forms 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, thereby has higher aggregation efficiency.
Carry out after nanometer air supporting-agglomeration process the main reaction region of sewage in nanometer aeration cohesion-micro swirl flocculation plant, again condense-flocculate in micro swirl coagulator, then flco Engagement Area in the middle of flowing to, 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, controls the rotating speed of spiral conveyer not higher than 30r/min; Clear liquor overflow, to right side flco secondary Engagement Area, is carried out secondary interception under the effect of high-density tridimensional network filler, and the clear liquid after filtration is discharged from water outlet.Secondary Engagement Area filler routine cleaning is opened filler bottom nanometer aeration head simultaneously when 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.
The water inlet of three grades of recoil screen apparatus 22 is provided with an influent weir 19, and water outlet is provided with 24, three grades of recoil screen apparatus 22 inside of backflash and is divided into the pond on top and two parts of the water collecting basin of bottom by perforated grill 25.The water collecting basin of three grades of recoil screen apparatus 22 inside is connected a ventpipe 36 and leads to atmosphere with pond two portions, cause device to break even to explode to prevent that three grades of recoil screen apparatus internal pressures are too high.
Perforated grill 25 is two-layer, middle laying and fixing one deck stainless (steel) wire, and the below of perforated grill 25 is provided with compact arranged flow-dividing bin cylindraceous 26 partition spaces, prevents the excessive perforated grill 25 that breaks through of local pressure.Perforated grill 25 top center are laid in the sieving filler 21 that a nanometer aeration head is embedded in filling, sieving filler 21 is chosen the mixture of quartz sand, modified manganese sand and natural zeolite molecular sieve, volume mixture ratio is 9:3:1, particle diameter is 0.5-1.2mm, nonuniformity coefficient is 2, is the multi-functional mixed fillers that integrates filtration, absorption, ion-exchange, coagulation and removal heavy metal.Nanometer aeration head is connected with a nanometer aeration machine 28 by under meter.Sieving filler 21 is provided with a spoiler 20 near influent weir 19 places, is provided with an aeration tube 23 near a side of backflash 24, and aeration tube 23 is provided with multiple pore solarization air caps, and solarization air cap vertically upward.Ultrasonic generator 42 is installed in sieving filler 21.The below of flow-dividing bin 26 is water collecting basin, water collecting basin outer wall brushing lucifuge blackwash, and the photocatalyst of its inwall uniform loading one deck nonmetal doping is (as the nano-TiO of carbon doping
2powder), its bottom is provided with ultraviolet sterilization lamp 32, and is provided with O between ultraviolet sterilization lamp 32
3aeration nanometer aeration head, remaining space-filling has semi-conductor load filler 29 (as loaded with nano TiO in water collecting basin
2solid netted polypropylene filler), without using dispersion agent, and reduce the leakage of catalyzer.
Sewage enters from the influent weir of three grades of recoil screen apparatus, under the physical structure effect of influent weir, is led as straight up by horizontal direction, impinges upon on flow-stopping plate, to prevent that water stream from directly clashing into sieving fillers affect treatment effect under action of gravity; Sewage, through the filtration of sieving filler, flow to below water collecting basin, and the air inlet of the nanometer aeration head in water collecting basin is O
3, obtain in a large number hydroxyl radical free radical by nanometer aeration, with ultraviolet sterilization lamp, semi-conductor load filler improves advanced oxidation effect jointly, the water outlet of being wherein rich in hydroxy radical qiao, in the time that device carries out backwash, is washed away sieving filler simultaneously, accomplishes that preferably filler is clean and regenerates.
While 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, intermittently break up the fine and close crud layer on sieving filler, pollution substance layer is broken into sheet and floats, impact flow-stopping plate to the right under the synergy of thrust in the buoyancy of aeration tube and water inlet, overflow, to backflash, concentrates outside remover the pollutent that filler is held back, and mixes again and processes with water inlet.Extend screen apparatus work-ing life and backwash cycle, for the lower situation of influent turbidity, even can be without back flushing, constantly operation is purified waste water.
In water collecting basin, nanometer aeration head adopts O
3aeration, because nano bubble has huge quantity, specific surface area, the characteristic such as lift velocity slowly, simultaneously gas residence time of ducking in drink long, increased gas-to-liquid contact area, duration of contact, be beneficial to ozone soluble in water, overcome ozone and be insoluble in the shortcoming of water; Microbubble inside has larger pressure and nano bubble while breaking, and interface disappears, and 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.
The water outlet of three grades of recoil screen apparatus is by topping-up pump 18 lead-in light catalytic degradation reaction devices 27, and photocatalytic degradation reaction unit 27 inwall uniform loading one deck nonmetal doping photocatalysts are (as the nano-TiO of carbon doping
2powder), bottom offers mud discharging mouth, be positioned at mud discharging mouth top and be provided with nanometer aeration dish 30, this nanometer aeration dish 30 connects a nanometer aeration machine 28, on nanometer aeration dish 30, be provided with low pressure ultraviolet mercury lamp framework 31, on low pressure ultraviolet mercury lamp framework 31, ultraviolet sterilization lamp 32 is installed, ultraviolet sterilization lamp 32 is provided with waterproof sleeve, and the average irradiation dose of ultraviolet sterilization lamp is at 350J/m
2above.Photocatalytic degradation reaction unit 17 remaining space inside are filled with semi-conductor load filler 29 (as nano-TiO
2powder loads on solid netted polypropylene filler).The water outlet of photocatalytic degradation reaction unit 27 is provided with screen cloth, and one end of photocatalytic degradation reaction unit 27 is provided with tank gage, and the top of photocatalytic degradation reaction unit 27 is provided with tinted shade.Photocatalytic degradation reaction unit 27 of the present invention has increased reaction surface, and having solved conventional photocatalyst needs the collaborative drawback using of dispersion agent, has reduced the leakage of catalyzer, has avoided reaction to finish the separating step of rear catalyst.Current after treatment are discharged through the water outlet of photocatalytic degradation reaction unit 27.The interior hydraulic detention time of photocatalytic degradation reaction unit 27 should exceed 15min.
In the sieving pond of nanometer aeration ablating device in the present invention, nanometer aeration cohesion-micro swirl flocculation plant, three grades of recoil screen apparatus and water collecting basin and in photocatalytic degradation reaction unit, each nanometer aeration head is connected with a nanometer aeration machine respectively.Wherein the air inlet of nanometer aeration head is O when the back flushing of nanometer aeration ablating device, nanometer aeration cohesion-micro swirl flocculation plant, three grades of recoil screen apparatus
2, stir and clean filler for coagulation; Water collecting basin and the air inlet of photocatalytic degradation reaction unit nanometer aeration head of three grades of recoil screen apparatus are O
3, strengthen the production process of hydroxyl radical free radical by nanometer aeration.
When three grades of normal sievings of recoil screen apparatus of the present invention, sewage enters from influent weir, under the physical structure effect of influent weir, led as straight up by horizontal direction, under action of gravity, impinge upon on flow-stopping plate, to prevent that water stream from directly clashing into fillers affect treatment effect; Sewage, through the filtration of filler, flow to below water collecting basin, and in water collecting basin, the air inlet of nanometer aeration head is O
3, obtain in a large number hydroxyl radical free radical by nanometer aeration, with ultraviolet sterilization lamp, semi-conductor load filler improves advanced oxidation effect jointly, the water outlet of being wherein rich in hydroxy radical qiao, in the time that device carries out backwash, is washed away sieving filler simultaneously, accomplishes that preferably filler is clean and regenerates.
According to one embodiment of present invention, after the present invention processes, the complicated organic pollution materials effects such as effects on surface activator, environmental classes hormone are all greater than 99%.
The present invention adopts three grades of backwashing technologies to carry out back flushing:
One-level back flushing is aeration circulation back flushing, because pollution substance is in the accumulation of filling surface, the space that sewage is difficult to see through between filler is permeated down, in sieving process, carry out back flushing, open three grades of recoil screen apparatus 22 upper left corner topping-up pumps 18, aeration tube 23 intermittently starting porous plate top nanometer aeration head 9, the discontinuous work of nanometer aeration head in water collecting basin, air is upwards heaved from porous plate, be divided into small bubbles, intermittently break up the fine and close crud layer on sieving filler, pollution substance layer is broken into sheet and floats, impact flow-stopping plate in the buoyancy of aeration tube and water inlet and under the synergy of thrust, produce impeller effect to the right, clean energetically the fine and close pollutent of filler top layer sheet, overflow is to backflash, the pollutent that filler is held back is concentrated outside remover, mix again and process with water inlet, sewage also can continue to permeate down from molecular sieve space, one-level back flushing can extend screen apparatus work-ing life and backwash cycle, for the lower situation of influent turbidity, even can be without back flushing, and make device constantly move and purify waste water.
Secondary back flushing is air pulse back flushing, because turbidity of sewage is too high, causes the bulk deposition of pollution substance at filling surface, only depends on one-level backwash step still can not reach the effect that continues sieving.Close the first valve 16, the first gate valve 34, open the 3rd valve 33, the second valve 17, start three grades of recoil screen apparatus 22 lower right corner topping-up pumps 18, aeration tube 23 and two nanometer aeration heads 9, 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, all 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, impact flow-stopping plate to the right under the synergy of thrust in the buoyancy of aeration tube and water inlet, overflow to backflash mixes with initial water inlet, treat water surface fast-descending, after filtering rate is stablized again, close three grades of recoil screen apparatus 22 lower right corner topping-up pumps 18, porous plate below nanometer aeration head 9, the 3rd valve 33, the second valve 17, open the first valve 16, the first gate valve 34, proceed sieving processing.
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 contaminated solution material to filler, and sewage must not gather and filtered in a large number.Now close the first valve 16, the first gate valve 34, open the 3rd valve 33, the second valve 17, start three grades of recoil screen apparatus 22 lower right corner topping-up pumps 18, aeration tube 23 and two nanometer aeration heads 9, ultrasonic generator 44, water outlet in outlet sump is imported in water collecting basin in a large number.(1) water collecting basin inner air rises and stirs along porous plate pore, and filler bottom nanometer aeration head starts aeration, and filler top 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 adhering on filler can be removed, and obtains comparatively pure filler; (3) utilize ultrasonic generator in liquid medium, to produce ultrasonic wave, produce cavitation effect at sieving filling surface, the shockwave forming when cavitation steam bubble breaks in closing course, can around it, produce the surge pressure of thousands of air pressure, act on and on filling surface, destroy viscosity between dirt, and they are dispersed in backwash liquor rapidly, thereby 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 and initially intake and mix from left end influent weir and right-hand member backflash.Through three grades of back flushinges, internal contamination thing is cleaned totally emptying.
Conventional sand filtration is not disturbance layer of sand in filtration procedure, and current are flow through between sand fine gap.Conventionally adopt not disturbance layer of sand, on compacting filler, increase hydraulic pressure, sand, add the means such as grid and improve sand filtration process, allow current flow through between sand fine gap, and pollution substance rests on the top layer of layer of sand.The present invention utilizes disturbance filler top layer, prevent smooth the pass through formation resistance of pollution substance accumulation to current, utilize the means such as surging force and the shearing force modifying device of advanced oxidation, nanometer aeration, bubble simultaneously, utilize the filler such as molecular sieve, manganese sand to be optimized design, finally use the improvement treating processess such as three grades of back flushinges.This device is good to the rejection effect of the suspended substances such as colloid, fiber, algae, for the lower water quality of turbidity even without back flushing, can complete treating processes, 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 residual surfactant, 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 processes to prepare the nano-TiO of carbon doping
2.Taking titanium sulfate and urea as 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) and be dissolved in deionized water, add appropriate glucose 0.6 to stir, 1:2:0.023 reacts 2h under the condition of 90 DEG C again.Question response finishes 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
2powder loads on the method on filler: adopt the tridimensional network filler of polypropylene material, by nano-TiO
2powder mixes with deionized water (powder is 1:20 with the mass ratio of water), become emulsion with ultrasonic echography, clean tridimensional network filler is immersed to the titanate coupling agent mixing with ethanol 1:1, slowly stir for some time, then filler is taken out and puts into TiO
2in emulsion, continue to stir for some time, after taking-up, put into baking oven dry (85 DEG C following) 2h, make loaded with nano TiO
2polypropylene suspension filler, its outward appearance is faint yellow, rete is more even.
The present invention has adopted the nanometer aeration ablating device that collects wet oxidation principle, nanometer aeration technical project to carry out pre-treatment to sewage, improve sewage oxygen level and biodegradability, then use blodisc microbial method, reduce BOD and other pollution substance content, finally use condense-flocculation treatment of aeration cohesion-micro swirl flocculation plant, three grades of back flushing sieving impurity screenings, to reduce turbidity of sewage, reduce the load to the degraded of the advanced oxidation degree of depth, improve sewage transparency, strengthen the sterilizing virus killing effect to sewage.
Claims (10)
1. blodisc goes out a device for advanced water treatment processing, is mainly made up of nanometer aeration ablating device, blodisc pond, nanometer aeration cohesion-micro swirl flocculation plant, three grades of recoil screen apparatus and photocatalytic degradation reaction unit; Wherein:
Nanometer aeration ablating device bottom offers mud discharging mouth, and nanometer aeration ablating device inside is positioned at mud discharging mouth top and is provided with nanometer aeration dish, and the top of nanometer aeration dish is provided with stirrer; A side in nanometer aeration ablating device is provided with heating zone and temperature-sensitive control head, and heating zone and temperature-sensitive control head are by temperature controller control; Blodisc pond is led in the water outlet of nanometer aeration ablating device;
The many groups of blodiscs that are arranged in parallel are installed in blodisc pond, by body of wall, blodisc are divided into Liang Ge district, respectively organize between the rotating shaft of blodisc by geartransmission, and blodisc has the area of 20-60% to be immersed in blodisc pond; At the bottom of the pond in blodisc pond, be covered with flow model molecular sieve filling, blodisc inside is filled with molecular sieve filling;
Blodisc is pie hollow iron, the inner completely polyethylene ball of filling of iron cage, polyethylene ball inside is hollow, spherome surface is covered with square opening, polyethylene ball inside is filled with flyash molecular sieve filling, compactedness is 70%, to ensure the mobility of filler, filling surface microbial film is come off under shock rubbing effect; Nanometer aeration cohesion-micro swirl flocculation plant is led in the water outlet in blodisc pond;
Nanometer aeration cohesion-micro swirl flocculation plant bottom is provided with spiral transferring mud device and mud mouth, the side that nanometer aeration cohesion-micro swirl flocculation plant connects blodisc pond water outlet is main reaction region, be used for nanometer air supporting-agglomeration process, adjacent main reaction region is flco Engagement Area, adjacent flco Engagement Area be flco secondary Engagement Area; In main reaction region, be provided with micro swirl coagulator, main reaction region inner and upper passes into O
2nanometer aeration head, top, main reaction region is provided with to add the chemicals dosing plant of coagulating agent; In flco Engagement Area, be equipped with the inclined tube for flco interception precipitation; Flco secondary Engagement Area inside is filled with polyacrylic tridimensional network filler, a nanometer aeration head is laid in tridimensional network filler below, flco secondary Engagement Area bottom is provided with water outlet, and water outlet connects the water-in that revolves three grades of recoil screen apparatus by hydro-pump;
The water inlet in three grades of recoil screen apparatus ponds 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 two parts of the flow-dividing bin of bottom by perforated grill, and flow-dividing bin is compact arranged cylindric; Perforated grill top center is laid a nanometer aeration head, is embedded in the sieving filler of filling, and sieving filler top is provided with a spoiler near influent weir place, is provided with one passes into O near a side of backflash
2aeration tube, aeration tube is provided with multiple pore solarization air caps, 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, its bottom is provided with ultraviolet sterilization lamp, and between sterilizing lamp, is provided with and passes into O
3aeration nanometer aeration head, remaining space-filling has semi-conductor load filler in water tank; The direct lead-in light catalytic degradation reaction of the water outlet device of three grades of recoil screen apparatus;
Photocatalytic degradation reaction unit inwall uniform loading one deck nonmetal doping photocatalyst, bottom offers mud discharging mouth, be positioned at mud discharging mouth top and be provided with nanometer aeration dish, on nanometer aeration dish, be provided with low pressure ultraviolet mercury lamp framework, on low pressure ultraviolet mercury lamp framework, low pressure ultraviolet mercury lamp is installed, low pressure ultraviolet mercury lamp is provided with waterproof sleeve.Photocatalytic degradation reaction unit remaining space inside is filled with semi-conductor load filler; The top of photocatalytic degradation reaction unit is provided with tinted shade.
2. blodisc goes out the device of advanced water treatment processing according to claim 1, wherein, the water outlet of nanometer aeration ablating device is delivered to elevated tank by laying pipe network, the unpowered waterwheel that the sewage of being discharged by elevated tank is just being installed blodisc pond, utilizes gravitional force to be converted into kinetic energy and promotes waterwheel rotation; Unpowered waterwheel is coaxial with a gear, this gear and other multiple engaged gears, and on all gears, lay a sprocket wheel, and the transmission between auxiliary waterwheel and gear and gear, and then the coaxial blodisc of drive and gear rotates in contact reacts groove.
3. blodisc goes out the device of advanced water treatment processing according to claim 1, and wherein, the coagulating agent using in nanometer aeration cohesion-micro swirl flocculation basin is polymerize aluminum chloride+cationic polyacrylamide.
4. blodisc goes out the device of advanced water treatment processing according to claim 1, and wherein, the sieving filler in three grades of recoil screen apparatus is chosen quartz sand, modified manganese sand mixes with natural zeolite molecular sieve, and particle diameter is 0.5-1.2mm, and nonuniformity coefficient is 2.
5. blodisc goes out the device of advanced water treatment processing according to claim 1, wherein, in the sieving pond of nanometer aeration ablating device, nanometer aeration cohesion-micro swirl flocculation plant, three grades of recoil screen apparatus and water collecting basin and in photocatalytic degradation reaction unit, nanometer aeration head is connected with a nanometer aeration machine respectively.
6. blodisc goes out the device of advanced water treatment processing according to claim 1, and wherein, when the back flushing of nanometer aeration ablating device, 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; Water collecting basin and the air inlet of photocatalytic degradation reaction unit nanometer aeration head of three grades of recoil screen apparatus are O
3, strengthen the production process of hydroxyl radical free radical by nanometer aeration.
7. the method that the device that utilizes blodisc described in claim 1 to go out advanced water treatment processing carries out sewage disposal:
Sewage enters after nanometer aeration ablating device, the bubble that nanometer aeration ablating device produces is evenly sneaked in sewage, the in the situation that of high-temperature nano aeration, sewage is carried out to nanometer aeration processing, in sewage, tiny flco floats with nano bubble, remove with Despumation device by air supporting principle, in sewage, residual biodegradable organic compounds decomposes under the effect of nanometer aeration advanced oxidation, melt, pathogenic bacteria and microorganism are inactivated, and transparency and the colourity of sewage are improved, pollution substance in the flow model molecular sieve filling absorption sewage of nanometer aeration ablating device bottom, suppress saprobia toxicity to improve biological sewage treatment effect, the water outlet after treatment of nanometer aeration ablating device is led in blodisc pond,
The inner molecular sieve filling of filling in blodisc pond further adsorbs the pollution substance in sewage, suppresses saprobia toxicity to improve biological sewage treatment effect; The flyash molecular sieve filling of blodisc inside, because its compactedness is 70%, has ensured the mobility of flyash molecular sieve filling, and flyash molecular sieve filling surface biological film is come off under shock rubbing effect; In the water outlet after treatment of blodisc pond is directed at nanometer aeration cohesion-micro swirl flocculation plant;
Nanometer air supporting-agglomeration process is carried out in water outlet in the main reaction region of nanometer aeration cohesion-micro swirl flocculation plant, again condense-flocculate in micro swirl coagulator, 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 and is entered three grades of recoil screen apparatus from water outlet;
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, intermittently break up the fine and close crud layer on sieving filler, pollution substance layer is broken into sheet and floats, impact flow-stopping plate to the right under the synergy of thrust in the buoyancy of aeration tube and water inlet, overflow is to backflash, the pollutent that sieving filler is held back is concentrated outside remover, mix again and process with water inlet, 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, the characteristic such as lift velocity slowly, simultaneously gas residence time of ducking in drink long, increased gas-to-liquid contact area, duration of contact, be beneficial to ozone soluble in water, overcome ozone and be insoluble in the shortcoming of water; Microbubble inside has larger pressure and nano bubble while breaking, and interface disappears, and 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, enter and in photocatalytic degradation reaction unit, carry out photocatalytic degradation reaction through the sewage of three grades of recoil screen apparatus processing.
The part effluent recycling of three grades of recoil screen apparatus is to blodisc pond simultaneously, and regulating water quality also stimulates microbial physiology activity, and screening forms the seed activity group of the ion exchanging function with molecular sieve.
8. method according to claim 7, wherein, the hydraulic detention time in nanometer aeration ablating device exceedes 30min; Hydraulic detention time in blodisc pond exceedes 2h; In photocatalytic degradation reaction unit, hydraulic detention time exceedes 15min.
9. method according to claim 7, wherein, the sieving pond of nanometer aeration ablating device, nanometer aeration cohesion-micro swirl flocculation plant, three grades of recoil screen apparatus is connected respectively a nanometer aeration machine with the nanometer aeration head in tank and in photocatalytic degradation reaction unit.
10. according to the method described in claim 7 or 9, wherein, when the back flushing of nanometer aeration ablating device, 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; Tank and the air inlet of photocatalytic degradation reaction unit nanometer aeration head of three grades of recoil screen apparatus are O
3, strengthen the production process of hydroxyl radical free radical by nanometer aeration.
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| CN106145542A (en) * | 2016-08-19 | 2016-11-23 | 环境保护部华南环境科学研究所 | A kind of novel carriers biological rotating disk processes the method for sewage |
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