CN104150704B - A kind for the treatment of unit of waste water treating and reutilizing and treatment process - Google Patents
A kind for the treatment of unit of waste water treating and reutilizing and treatment process Download PDFInfo
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- CN104150704B CN104150704B CN201410360039.4A CN201410360039A CN104150704B CN 104150704 B CN104150704 B CN 104150704B CN 201410360039 A CN201410360039 A CN 201410360039A CN 104150704 B CN104150704 B CN 104150704B
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Abstract
A treatment unit for waste water treating and reutilizing, it mainly comprises: a grating tank connects baffling complex vertical artificial swamp by water inlet pipe; Baffling complex vertical artificial swamp is connected to surface turbulence screen apparatus by two reducing water inlet pipes; The water outlet of surface turbulence screen apparatus is connected with nanometer aeration advanced treatment apparatus.The invention also discloses the treatment process of waste water treating and reutilizing.
Description
Technical field
The present invention relates to a kind for the treatment of unit of waste water treating and reutilizing.
The invention still further relates to the method utilizing said apparatus to carry out sewage three grades of water outlet advanced treatment.
Background technology
Advanced treatment of wastewater refers to that municipal effluent or trade effluent are after one-level, second-stage treatment, makes sewage be back to the further water treatment procedure produced or live as water resources to reach certain recycle water standard.Tertiary treatment or multilevel processing technology can be adopted further for the raw water quality of sewage (waste water) and the water quality requirement after processing.Be usually used in removing the trace amounts of CO D in water and BOD organic pollution materials, SS and nitrogen, phosphorus high concentration nutritional material and salt.The method of advanced treatment has: physico-chemical process and biological denitrificaion, the dephosphorization methods etc. such as flocculent precipitation, sand filtration method, activated carbon method, Ozonation, membrane separation process, ion exchange method, electrolysis treatment, wet oxidation process, catalytic oxidation, evaporation concentration method.Deep treatment method somewhat expensive, manages more complicated, and the expense processing water per ton is about more than 4-5 times of coagulation expense.But advanced treatment costly, and easily cause waste and secondary pollution, therefore the advanced treatment that a kind of cheap, more effective method carries out sewage need be found.
Summary of the invention
The object of the present invention is to provide a kind for the treatment of unit of waste water treating and reutilizing.
Another object of the present invention is to provide a kind of method utilizing said apparatus to carry out sewage three grades of water outlet advanced treatment.
For achieving the above object, the treatment unit of waste water treating and reutilizing provided by the invention, it mainly comprises:
One grating tank connects baffling complex vertical artificial swamp by water inlet pipe;
Baffling complex vertical artificial swamp is connected to surface turbulence screen apparatus by two reducing water inlet pipes;
The water outlet of surface turbulence screen apparatus is connected with nanometer aeration advanced treatment apparatus;
Wherein:
Baffling complex vertical artificial swamp inside is divided into three parts by two dividing plates, and connect grating tank part and be respectively composite multifunction packing layer and gravel bed from top to bottom, the water inlet pipe of grating tank is embedded in gravel bed; Connecting surface turbulence screen apparatus part is settling tank; Composite multifunction packing layer and gravel bed part are respectively surperficial sandy soils (red mud molecular sieve and sand mix according to volume ratio 3:2) and gravel bed from top to bottom with the part between settling tank, are evacuated tube below gravel bed; The staggered flap of level is provided with, to extend sewage hydraulic detention time in wetland in baffling complex vertical artificial swamp; The supernatant liquor of settling tank imports surface turbulence screen apparatus by topping-up pump; The filler of filling in composite multifunction packing layer is used for a large amount of adsorption fouling load and slowly-releasing gradually, for reducing pollution load and toxicity, surperficial sandy soils utilizes the red mud molecular sieve of meta-alkalescence as filler simultaneously, the small molecules acid produced with anaerobic part acidifying in rapid adsorption, regulate sewage potential of hydrogen, make device environment plant preferably, microbe survival; Construction slight alkali environment fixes the heavy metal in sewage simultaneously, prevents it from leaching, and utilizes small organic molecule to supply plant nutrient, and heavy metal biological stabilization is carried out in absorption in growing process, absorption heavy metal.All mixed fillers surfaces form microbial film, form aerobic, anoxic, anaerobic state from top to bottom, go down except the pollution substance in sewage in the synergy of root system of plant and microorganism;
Surface turbulence screen apparatus is divided into upper and lower two parts by porous plate; Porous plate hole is skewed, sieving filler is equipped with above porous plate, the bottom of sieving filler is provided with nanometer aeration head, and both sides, sieving filler internal skin are relatively respectively provided with a reducing water inlet pipe, and two reducing water inlet pipes are connected with the topping-up pump of baffling complex vertical artificial swamp; One side-lower of surface turbulence screen apparatus is provided with reducing backwash pipe, connects topping-up pump by Backwash pipeline; The top that surface turbulence screen apparatus is positioned at reducing backwash pipe is provided with backflash; Be positioned at backflash side above sieving filler and be provided with aeration tube, aeration tube is provided with multiple pore solarization air cap, and pore solarization air cap vertically upward; Above sieving filler, ultrasonic generator is installed; It is water tank below porous plate, water tank inwall uniform loading one deck nonmetal doping photocatalyst, be provided with ultraviolet sterilization lamp bottom water tank, arrange nanometer aeration head between the space of ultraviolet sterilization lamp, surface turbulence screen apparatus remaining space inside is filled with semi-conductor load filler;
The water tank water outlet of surface turbulence screen apparatus is connected with nanometer aeration advanced treatment apparatus by topping-up pump; The bottom of nanometer aeration advanced treatment apparatus offers mud discharging mouth, inside is positioned at above mud discharging mouth and is provided with inclined tube packing layer, inclined tube packing layer is provided with nanometer aeration dish, the top of nanometer aeration advanced treatment apparatus is provided with electric motor by belt drive gear operation, thus makes the scraper plate on belt that the body refuse of air-flotation process sewage surface, the dregs of fat are struck off and be got rid of to dreg collecting slot; The outlet sump that dreg collecting slot forms with two flaps is connected, and is collected by middle part clear liquid and discharged by water outlet after completely cutting off top scum silica frost and base sludge.
In the treatment unit of described waste water treating and reutilizing, evacuated tube is a boring pvc pipe.
In the treatment unit of described waste water treating and reutilizing, composite multifunction packing layer is made up of Fu Luoli diatomite, rubble and coal ash molecular sieve, and Fu Luoli diatomite particle diameter is 0.8-1.8mm, and ballast grain sizes is 20-50mm, and coal ash molecular sieve particle diameter is 10-50mm.
In the treatment unit of described waste water treating and reutilizing, sieving filler is the mixture by natural siliceous sand and modified manganese sand.
In the treatment unit of described waste water treating and reutilizing, semi-conductor load filler is nano-TiO
2powder load is on solid netted polypropylene filler.
In the treatment unit of described waste water treating and reutilizing, the aeration plate of surface turbulence screen apparatus and nanometer aeration advanced treatment apparatus connects nanometer aeration machine respectively.
In the treatment unit of described waste water treating and reutilizing, the air inlet of surface turbulence screen apparatus is O
2, for clean filler; The air inlet of nanometer aeration advanced treatment apparatus is O
3, obtain hydroxyl radical free radical in a large number by nanometer aeration, play strong oxidation.
The treatment process of waste water treating and reutilizing provided by the invention, its process is:
Baffling complex vertical artificial swamp is entered after the strainer filtering impurities in water of grating tank, feed water flow is through gravel bed and multi-functional packing layer, after middle baffle plate is crossed in overflow, sewage is through surperficial sandy soils (red mud molecular sieve and sand are according to volume ratio 3:2 mixing), arrive gravel bed, in exhalant region, precipitation leaves standstill, and extends sewage hydraulic detention time in wetland, enhanced system treatment effect by the flap arranged in baffling complex vertical artificial swamp;
The exhalant region supernatant liquor of baffling complex vertical artificial swamp imports surface turbulence screen apparatus under the effect of topping-up pump;
Nanometer aeration intermittent aeration in the tank of surface turbulence screen apparatus, during aeration, tank internal gas pressure increases, and air is cut into bubble by porous plate and heaves, and impacts sieving filler, break up the pollution substance layer of filling surface and make it float, sewage can be filtered through sieving filler smoothly; The pollutent floated is pushed into the water surface by the bubble of aeration tube, and overflow, to backflash, mixes with water inlet and regulates influent quality, extend screen apparatus work-ing life and backwash cycle simultaneously;
Bottom the sieving filler of surface turbulence screen apparatus, the air inlet of nanometer aeration head is O
2, for clean filler; In the water tank of below, the air inlet of nanometer aeration head is O
3, obtain hydroxyl radical free radical in a large number by nanometer aeration, jointly improve advanced oxidation effect with ultraviolet sterilization lamp, 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, sieving filler is cleaned and regeneration; Water outlet after the process of surface turbulence screen apparatus enters nanometer aeration advanced treatment apparatus, when high-temperature nano aeration, nanometer aeration process is carried out to sewage, decompose residual biodegradable organic compounds and remaining pathogenic bacteria and microorganism, while organics removal, reduction COD, improve transparency and the colourity of sewage.
The effluent recycling of surface turbulence screen apparatus to the water inlet of baffling complex vertical artificial swamp, regulating water quality stimulating plant process of growth secretion secondary substance.
In the treatment process of described waste water treating and reutilizing, ultraviolet sterilization lamp average shot dosage is at 300J/m
2above.
The height of Physical, chemical method, Biochemical method sewage combines by the present invention, the sewage treatment process of forefront is adopted to carry out the deep-purifying method of sewage disposal and Treated sewage reusing, and in fundamentally improvement opportunity principle, thorough innovation advanced treatment of wastewater technology, simple process, takes up an area few, good purification, removing organism is thorough, for water resources saving, reuse provide better method.Wherein in surface turbulence 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, intestinal bacteria, streptococcus aureus, virus etc. can be killed, decompose residual biodegradable organic compounds and toxic substance, lasting security sewage is carried out disinfection degraded.Process aspect for Environmental estrogen (as micro-harmful chemicals such as hormones agricultural chemicals, microbiotic, Dioxins, oestrogenic hormon and synthetic hormones) has very large advantage, most organic permineralization or decomposition can be made, go out Water warfare, sterilization to it while carrying out sieving process to sewage, water outlet reaches national requirements standard preferably.
Accompanying drawing explanation
Fig. 1 is the treatment unit schematic diagram of waste water treating and reutilizing of the present invention.
Primary clustering nomenclature in accompanying drawing:
1 grating tank; 2 bodies of wall; 3 Spiked Loosestrives; 4 composite multifunction packing layers; 5 up ponds; 6 baffling complex vertical artificial swamps; 7 flaps; 8 reeds; 9 downstream tank; 10 surperficial sandy soils (red mud molecular sieve and sand are according to volume ratio 3:2 mixing); 11 settling tanks; 12 topping-up pumps; 13 first valves; 14 reducing water inlet pipes; 15 sieving fillers; 16 surface turbulence screen apparatus; 17 reducing backwash pipes; 18 second valves; 19 the 3rd valves; 20 nanometer aeration advanced treatment apparatus; 21 gears; 22 scraper plates; 23 belts; 24 electric motor; 25 outlet sumies; 26 water outlets; 27 baffle plates; 28 inclined tube packing layers; 29 dreg collecting slots; 30 mudholes; 31 nanometer aeration dishes; 32 mud storage chambers; 33 nanometer aeration machines; 34 hydro-pumps; 35 the 4th valves; 36 ultraviolet sterilization lamps; 37 porous plates; 38 nanometer aeration heads; 39 semi-conductor load fillers; 40 water tanks; 41 evacuated tube; 42 gravel beds; 43 water inlet pipes; 44 ultrasonic generators; 45 aeration tubes; 46 backflashes, A middle baffle plate.
Embodiment
The object of the present invention is to provide a kind for the treatment of process of waste water treating and reutilizing, efficiently can remove dirty pollutant in water (as: impurity atom such as organism, microorganism, inorganics).
Elaborate below in conjunction with accompanying drawing.It should be noted that, mention in the following description left and right, upper and lower etc. be all be as the criterion with direction shown in the drawings.
Combination unit provided by the invention, its primary structure comprises:
One grating tank 1, use strainer filtering, impurities in water is gradually accumulated in screen surface, and large-scale particle isolates in sewage, reduces artificial swamp blocking risk factor, improves subordinate's art breading efficiency.
Baffling complex vertical artificial swamp 6, is mainly divided into three parts, and left-half is respectively composite multifunction packing layer 4 and gravel bed 42 from top to bottom, and composite multifunction packing layer 4 plants Spiked Loosestrife 3 on the surface; Middle portion is respectively surperficial sandy soils (red mud molecular sieve and sand are according to volume ratio 3:2 mixing) 10 and gravel bed 42 from top to bottom, and surperficial sandy soils 10 plants reed 8; Right half part is settling tank 11.Being evacuated tube 41 below gravel bed 42, is a boring pvc pipe.Water inlet pipe 43 is embedded in left side gravel bed 42 and carries out water distribution, water inlet is upwards flowed under pressure, flows through gravel bed 42 and composite multifunction packing layer 4, after middle baffle plate A is crossed in overflow, sewage arrives gravel bed 42 through surperficial sandy soils 10, precipitates leave standstill at settling tank 11.In baffling complex vertical artificial swamp 6, a large amount of flap 7 is set, extends sewage hydraulic detention time in wetland, enhanced system treatment effect.The supernatant liquor of settling tank 11 imports surface turbulence screen apparatus 16 under the effect of topping-up pump 12.
Surface turbulence screen apparatus 16 is divided into upper and lower two parts by porous plate 37.Porous plate 37 hole is tilted to the right, one deck sieving filler 15 is laid above porous plate 37, sieving filler 15 is mixtures of quartz sand, modified manganese sand and natural zeolite molecular sieve, particle diameter is 0.5-2.0mm, is the multi-functional mixed fillers integrating filtration, absorption, ion-exchange, coagulation and removal heavy metal.The bottom of sieving filler 15 is provided with nanometer aeration head 38, and relative both sides, sieving filler 15 internal skin are respectively provided with a reducing water inlet pipe 14, and this reducing water inlet pipe 14 is connected with the topping-up pump 12 of baffling complex vertical artificial swamp 6.One side-lower of surface turbulence screen apparatus 16 is provided with reducing backwash pipe 17, connects topping-up pump 12 by Backwash pipeline.The top that surface turbulence screen apparatus 16 is positioned at reducing backwash pipe 17 is provided with backflash 46.Be positioned at backflash 46 side above sieving filler 15 and be provided with aeration tube 45, aeration tube 45 is provided with multiple pore solarization air cap, and pore solarization air cap vertically upward; Ultrasonic generator 44 is installed above sieving filler 15.It is water tank 40 below porous plate 37, water tank 40 inwall uniform loading one deck nonmetal doping photocatalyst, ultraviolet sterilization lamp 36 is installed bottom water tank 40, between the space of ultraviolet sterilization lamp 36, arrange nanometer aeration head 38, surface turbulence screen apparatus 16 remaining space inside is filled with semi-conductor load filler 39 (as nano-TiO
2powder load is at solid netted polypropylene filler), semi-conductor load filler 39 is fixed on carrier by the present invention, solving conventional photocatalyst needs dispersion agent to work in coordination with the drawback of use, decreases the leakage of catalyzer, avoids the separating step that reaction terminates rear catalyst.
The water outlet of surface turbulence screen apparatus 16 water tank 40 is connected with nanometer aeration advanced treatment apparatus 20 by a topping-up pump 34.The bottom of nanometer aeration advanced treatment apparatus 20 offers mud discharging mouth 30, inside is positioned at above mud discharging mouth 30 and is provided with inclined tube packing layer 28, inclined tube packing layer 28 is provided with nanometer aeration dish 31, when high-temperature nano aeration, nanometer aeration process is carried out to sewage, decompose residual biodegradable organic compounds and remaining pathogenic bacteria and microorganism, while organics removal, reduction COD, transparency, the colourity of sewage also increase.The top of nanometer aeration advanced treatment apparatus 20 is provided with an electric motor 24 and is operated by belt 23 driven gear 21, thus makes scraper plate 22 continuously the body refuse of air-flotation process sewage surface, the dregs of fat be struck off and be got rid of to dreg collecting slot 29; The outlet sump 25 that dreg collecting slot 29 forms with two flaps 27 is connected, and is collected by middle part clear liquid and discharged by water outlet 26 after completely cutting off top scum silica frost and base sludge.
When surface turbulence screen apparatus 16 carries out sieving, nanometer aeration machine 33 intermittent aeration in water tank 40, during aeration, water tank 40 internal gas pressure increases, air is cut into bubble by porous plate 37 and heaves, impact the sieving filler laid above porous plate 37, break up the pollution substance layer of sieving filling surface and make it float, sewage can be filtered through sieving filler smoothly, the pollutent floated is pushed into the water surface by bubble, in right side overflow to backflash 46, mix with water inlet and regulate influent quality, extend screen apparatus work-ing life and backwash cycle simultaneously, for the situation that influent turbidity is lower, even can without the need to back flushing, continuous operation is purified waste water.
Bottom surface turbulence screen apparatus 16 sieving filler, the air inlet of nanometer aeration head is O
2, for clean filler; In the water tank of below, the air inlet of nanometer aeration head is O
3, obtain hydroxyl radical free radical in a large number by nanometer aeration, with ultraviolet sterilization lamp, semi-conductor load filler improves advanced oxidation effect jointly, wherein be 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 mode of nanometer aeration is used to improve-OH production rate, because microbubble has huge quantity, specific surface area, slowly lift velocity, considerably increase gas liquid interfacial area, duration of contact, be conducive 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, strengthens the ability of ozone oxidation decomposing organic matter.
Ozone produces OH under the radiation of UV-light, and ozone takes away the electronics of titanium dioxide photoinduced electron hole centering, thus creates more hydroxyl radical free radical, accelerates organic degraded, is processed organic pollutant by the strong oxidation of OH.
According to one embodiment of present invention, reduce by more than 95% by benzene compounds in the sewage of process of the present invention, turbidity of sewage reduces by 99%, and effluent quality transparency is high.
Water tank right-hand member arranges Backwash pipeline, connect backwashing pump, when device carries out back flushing, nanometer aeration head starts aeration, when high-temperature nano aeration, nanometer aeration process is carried out to sand grains, under the effect of the surging force produced in the shearing force and aeration process of high temperature, the small bubble of nanometer, impurity, colloid and epontic microbial film that cleaning filler dams.Import the water outlet of secondary nanometer aeration advanced oxidation device by backwashing pump simultaneously and carry out back flushing, water tank is in water filling process, air on liquid level is extruded by brute force, packing layer is risen to by porous plate, filler is made to present boiling flow state, in water tank air emptying after, current continue through porous plate hole right bank upwards flow at high speed, in whole backwash process, reducing backwash in-pipe flow rinses left simultaneously, the filler of whole device forms the turbulent flow of fast turn-around under the surging force of current, phase mutual friction in the micro cyclone that filler is formed under the effect of different directions power, the organic pollutant of attachment is removed, be conducive to obtaining comparatively pure filler.
The present invention successively 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 nanometer aeration machine 33 above aeration tube 45 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, when the buoyancy of aeration tube and necking pipe water inlet thrust to the right synergy under produce impeller effect, sheet fine and close pollutent overflow in filler top layer 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 coal ash 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.Now close the first valve 13, the 3rd valve 35, open the second valve 18, start topping-up pump 12, aeration tube 45 and two nanometer aeration machines 33, the water outlet in nanometer aeration advanced treatment apparatus 20 outlet sump 25 is imported in surface turbulence screen apparatus 16.Under the effect of pressure of return water, whole air in surface turbulence screen apparatus 16 are subject to crushing failure at high speed, the pore of porous plate 37 rises, rotational flow under the impact force action of whole sieving packing layer nanometer aeration head under the swivel disturbance and sieving filler of ascending air, impeller, 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, and treats that the water surface declines fast.After filtering rate is stablized again, close nanometer aeration machine 33, second valve 18 below topping-up pump 12, porous plate, open the first valve 13, the 3rd valve 35, 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, open the second valve 18, the 3rd valve 35, start topping-up pump 12, aeration tube 45 and two nanometer aeration machines 33, ultrasonic generator 44, reverse starting hydro-pump 34, imports water outlet in water collecting basin.(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, and nanometer aeration and ultrasonic wave can impel the generation of hydroxyl radical free radical, the water outlet of being rich in hydroxy radical qiao rinse turbulence state filler particles surface and micropore, stripping 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 necking pipe high-pressure water inlet 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, ultrasonic wave, nanometer aeration, bubble simultaneously, utilize the filler such as coal ash 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:
Sluggish precipitation and hydrothermal method two step process is adopted 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
2the method of powder load 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), emulsion is become with ultrasonic echography, the tridimensional network filler of cleaning is immersed the titanate coupling agent mixed than 1:1 with ethanol contend, 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.
Claims (10)
1. a treatment unit for waste water treating and reutilizing, it mainly comprises:
One grating tank connects baffling complex vertical artificial swamp by water inlet pipe;
Baffling complex vertical artificial swamp is connected to surface turbulence screen apparatus by two reducing water inlet pipes;
The water outlet of surface turbulence screen apparatus is connected with nanometer aeration advanced treatment apparatus;
Wherein:
Baffling complex vertical artificial swamp inside is divided into three parts by two dividing plates, and connect grating tank part and be respectively composite multifunction packing layer and gravel bed from top to bottom, the water inlet pipe of grating tank is embedded in gravel bed; Connecting surface turbulence screen apparatus part is settling tank; Settling tank part is respectively surperficial sandy soils and gravel bed from top to bottom, and surperficial sand is that red mud molecular sieve and sand mix according to volume ratio 3:2, is evacuated tube below gravel bed; The staggered flap of level is provided with, to extend sewage hydraulic detention time in wetland in baffling complex vertical artificial swamp; The supernatant liquor of settling tank imports surface turbulence screen apparatus by topping-up pump;
Surface turbulence screen apparatus is divided into upper and lower two parts by porous plate; Porous plate hole is skewed, sieving filler is equipped with above porous plate, the bottom of sieving filler is provided with nanometer aeration head, and both sides, sieving filler internal skin are relatively respectively provided with a reducing water inlet pipe, and two reducing water inlet pipes are connected with the topping-up pump of baffling complex vertical artificial swamp; One side-lower of surface turbulence screen apparatus is provided with reducing backwash pipe, is connected to the outlet sump of nanometer aeration advanced treatment apparatus by Backwash pipeline and topping-up pump; The top that surface turbulence screen apparatus is positioned at reducing backwash pipe is provided with backflash; Be positioned at backflash side above sieving filler and be provided with aeration tube, aeration tube is provided with multiple pore solarization air cap, and pore solarization air cap vertically upward; Above sieving filler, ultrasonic generator is installed; It is water tank below porous plate, water tank inwall uniform loading one deck nonmetal doping photocatalyst, be provided with ultraviolet sterilization lamp bottom water tank, arrange nanometer aeration head between the space of ultraviolet sterilization lamp, surface turbulence screen apparatus remaining space inside is filled with semi-conductor load filler;
The water tank water outlet of surface turbulence screen apparatus is connected with nanometer aeration advanced treatment apparatus by hydro-pump; The bottom of nanometer aeration advanced treatment apparatus offers mud discharging mouth, inside is positioned at above mud discharging mouth and is provided with inclined tube packing layer, inclined tube packing layer is provided with nanometer aeration dish, the top of nanometer aeration advanced treatment apparatus is provided with electric motor by belt drive gear operation, thus makes the scraper plate on belt that the body refuse of air-flotation process sewage surface, the dregs of fat are struck off and be got rid of to dreg collecting slot; The outlet sump that dreg collecting slot forms with two flaps is connected, and is collected by middle part clear liquid and discharged by water outlet after completely cutting off top scum silica frost and base sludge.
2. the treatment unit of waste water treating and reutilizing according to claim 1, wherein, evacuated tube is a boring pvc pipe.
3. the treatment unit of waste water treating and reutilizing according to claim 1, wherein, composite multifunction packing layer is made up of Fu Luoli diatomite, rubble and coal ash molecular sieve, and Fu Luoli diatomite particle diameter is 0.8-1.8mm, ballast grain sizes is 20-50mm, and coal ash molecular sieve particle diameter is 10-50mm.
4. the treatment unit of waste water treating and reutilizing according to claim 1, wherein, sieving filler is mixed according to 5:2:1 ratio by quartz sand, modified manganese sand and natural zeolite molecular sieve, and wherein adulterate a small amount of zeroth order Nanoscale Iron.
5. the treatment unit of waste water treating and reutilizing according to claim 1, wherein, semi-conductor load filler is nano-TiO
2powder load is on solid netted polypropylene filler.
6. the treatment unit of waste water treating and reutilizing according to claim 1, wherein, the nanometer aeration head of surface turbulence screen apparatus and the aeration plate of nanometer aeration advanced treatment apparatus connect nanometer aeration machine respectively.
7. the treatment unit of waste water treating and reutilizing according to claim 1 or 6, wherein, bottom the sieving filler of surface turbulence screen apparatus, the air inlet of nanometer aeration head is O
2, for clean filler; The air inlet of nanometer aeration advanced treatment apparatus is O
3, obtain hydroxyl radical free radical in a large number by nanometer aeration, play strong oxidation.
8. utilize the treatment unit of waste water treating and reutilizing described in claim 1 to carry out the treatment process of waste water treating and reutilizing, its process is:
Baffling complex vertical artificial swamp is entered after the strainer filtering impurities in water of grating tank, feed water flow is through gravel bed and composite multifunction packing layer, after middle baffle plate is crossed in overflow, sewage arrives gravel bed through surperficial sandy soils, in exhalant region, precipitation leaves standstill, sewage hydraulic detention time in wetland is extended, enhanced system treatment effect by the flap arranged in baffling complex vertical artificial swamp;
The exhalant region supernatant liquor of baffling complex vertical artificial swamp imports surface turbulence screen apparatus under the effect of topping-up pump;
Nanometer aeration intermittent aeration in the tank of surface turbulence screen apparatus, during aeration, tank internal gas pressure increases, and air is cut into bubble by porous plate and heaves, and impacts sieving filler, break up the pollution substance layer of filling surface and make it float, sewage can be filtered through sieving filler smoothly; The pollutent floated is pushed into the water surface by the bubble of aeration tube, and overflow, to backflash, mixes with water inlet and regulates influent quality, extend screen apparatus work-ing life and backwash cycle simultaneously;
Bottom the sieving filler of surface turbulence screen apparatus, the air inlet of nanometer aeration head is O
2, for clean filler; In the water tank of below, the air inlet of nanometer aeration head is O
3, obtain hydroxyl radical free radical in a large number by nanometer aeration, jointly improve advanced oxidation effect with ultraviolet sterilization lamp, 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, sieving filler is cleaned and regeneration; Water outlet after the process of surface turbulence screen apparatus enters nanometer aeration advanced treatment apparatus, when high-temperature nano aeration, nanometer aeration process is carried out to sewage, decompose residual biodegradable organic compounds and remaining pathogenic bacteria and microorganism, while organics removal, reduction COD, improve transparency and the colourity of sewage.
9. the treatment process of waste water treating and reutilizing according to claim 8, wherein, ultraviolet sterilization lamp average shot dosage is at 300J/m
2above.
10. the treatment process of waste water treating and reutilizing according to claim 8, wherein, the effluent recycling of surface turbulence screen apparatus to the water inlet of baffling complex vertical artificial swamp, regulating water quality stimulating plant process of growth secretion secondary substance.
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| CN105692905B (en) * | 2015-09-29 | 2019-01-04 | 河南工业大学 | A kind of land disposal method and device of ecotype landscape water body |
| CN107500417A (en) * | 2016-09-30 | 2017-12-22 | 华北理工大学 | Intend pipeline water-purifying system |
| CN107694161A (en) * | 2017-11-13 | 2018-02-16 | 重庆洁邦电器有限公司 | A kind of increasing journey flow slowing device for sewage disposal |
| CN108328805A (en) * | 2018-04-18 | 2018-07-27 | 刘亚平 | A kind of wet type desulfurizing slurries processing unit and method |
| CN109225296A (en) * | 2018-08-31 | 2019-01-18 | 中国环境科学研究院 | A kind of visible light-responded photochemical catalyst and preparation method thereof |
| CN110615575B (en) * | 2019-09-03 | 2021-09-24 | 生态环境部华南环境科学研究所 | Flood season agricultural area fruit and vegetable composite ecological system based on nitrogen and phosphorus reduction |
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| KR100477367B1 (en) * | 2003-04-22 | 2005-03-22 | 백순기 | sewage and waste water treating system by ceramics and method for purifying sewage and waste water using the same |
| CN2780751Y (en) * | 2005-04-28 | 2006-05-17 | 重庆大学 | Baffling wet land filtering pond and lateral under flow wet land bed sewage treatment system |
| US7674378B2 (en) * | 2006-12-19 | 2010-03-09 | Modular Wetland Systems, Inc. | Wetland water treatment system |
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| CN101456652B (en) * | 2009-01-05 | 2011-12-07 | 北京大学 | Device of depth denitrogen and phosphorus removal composite processing system by micro-power and method thereof |
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