CN104150698B - A kind of apparatus and method of M type artificial swamp advanced treatment domestic sewage in rural areas - Google Patents
A kind of apparatus and method of M type artificial swamp advanced treatment domestic sewage in rural areas Download PDFInfo
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- CN104150698B CN104150698B CN201410359903.9A CN201410359903A CN104150698B CN 104150698 B CN104150698 B CN 104150698B CN 201410359903 A CN201410359903 A CN 201410359903A CN 104150698 B CN104150698 B CN 104150698B
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Abstract
A device for M type artificial swamp advanced treatment domestic sewage in rural areas, mainly comprises: one-level grid maker connects secondary grid maker; Secondary grid maker is connected to M type artificial swamp; The water outlet of M type artificial swamp is connected to surface turbulence screen apparatus by topping-up pump; The water outlet of surface turbulence screen apparatus is connected to outlet sump.The invention also discloses a kind of method of M type artificial swamp advanced treatment domestic sewage in rural areas.High for heavy metal content and that water pollution fluctuation of load is large wastewater treatment efficiency is particularly evident.
Description
Technical field
The present invention relates to a kind of device of M type artificial swamp advanced treatment domestic sewage in rural areas.
The invention still further relates to the method utilizing said apparatus to carry out sewage three grades of water outlet advanced treatment.
Background technology
Artificial swamp (CWConstructedWetland) sewage disposal technology is a kind of New Technology about Wastewater Treatment grown up the end of the seventies.It has, and treatment effect is good, nitrogen phosphorus ligands ability is strong, during-operation service convenient management, engineering capital construction and running expense is low and to the feature such as load variations is adaptable, relatively be suitable for technology management level not bery high, the cities and towns that scale is less or rural sewage disposal.The purification mechanism of artificial swamp: the process of artificial swamp to waste water combines physics, chemistry and biological three kinds of effects.After wet land system maturation, filling surface and root system of plant will form microbial film due to a large amount of microbial growth.Wastewater streams is when microbial film, and a large amount of SS filled stop with root system of plant retains, and organic pollutant is then removed by biomembranous absorption, assimilation and dissimilation.Because root system of plant discharges the transmission of oxygen in wet land system, make in the environment around it, to occur aerobic, anoxic, anaerobic state successively, ensure that nitrogen phosphorus in waste water can not only by plant and microorganism as dietetic alimentation, but also can be removed by nitrated, denitrification, last wet land system changes filler or pollutent finally removes by harvesting serike.
The subject matter of domestic sewage in rural areas is its decentralized, pollution load is low and have the feature of a small amount of foreign material, the present invention adopts artificial swamp in conjunction with surface turbulence screen apparatus process domestic sewage in rural areas, for ecological method process domestic sewage in rural areas provides good subsequent purification step.
Summary of the invention
The object of the present invention is to provide a kind of device of M type artificial swamp advanced treatment domestic sewage in rural areas.
Another object of the present invention is a kind of method providing M type artificial swamp advanced treatment domestic sewage in rural areas.
For achieving the above object, the device of M type artificial swamp advanced treatment domestic sewage in rural areas provided by the invention, mainly comprises:
One-level grid maker connects secondary grid maker;
Secondary grid maker is connected to M type artificial swamp;
The water outlet of M type artificial swamp is connected to surface turbulence screen apparatus by topping-up pump;
The water outlet of surface turbulence screen apparatus is connected to outlet sump;
Wherein:
M type artificial swamp is concrete wall, does Anti-seeping technology, is divided into two parts by partition wall, and water inlet side is overall higher than water outlet side;
Each part in M type artificial swamp is divided into again two regions, is filled with A mixed fillers and B mixed fillers respectively near the both sides of partition wall, is filled with pebbles, isolates dirty impurities in water near the both sides of concrete wall;
Be provided with space between below partition wall and bottom M type artificial swamp, the both sides in this space and the bottom place of M type artificial swamp are respectively provided with a pvc pipe of holing abreast respectively, are all filled with zeolite filler in two pvc pipes; Zeolite filler is filled with for crossing water in the space formed between two pvc pipes and partition wall and M type artificial swamp;
The water outlet of M type artificial swamp enters surface turbulence screen apparatus by topping-up pump;
Surface turbulence screen apparatus is divided into upper and lower two parts by porous plate, sieving filler is equipped with above porous plate, the bottom of sieving filler is provided with nanometer aeration head, and the top layer of sieving filler is filled with molecular sieve filling, is provided with reducing water inlet pipe in molecular sieve filling; Surface turbulence screen apparatus is positioned at below the opposite side of reducing water inlet pipe, is provided with reducing backwash pipe, connects outlet sump by topping-up pump in sieving filler; The top that surface turbulence screen apparatus is positioned at reducing backwash pipe is provided with backflash, is positioned at backflash side and is provided with aeration tube above sieving filler, and aeration tube is provided with multiple 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.
In the device of described M type artificial swamp advanced treatment domestic sewage in rural areas, the filtering accuracy of one-level grid and secondary grid is respectively 21mm and 8mm.
In the device of described M type artificial swamp advanced treatment domestic sewage in rural areas, the mixed fillers of the water inlet side in M type artificial swamp be sieved by the slow release molecules that coal ash for manufacturing is standby and gac by volume 1:2-5 mix, the mixed fillers of water outlet side is by volume for 1:2-5 mixes by Fu Luoli diatomite and red mud molecular sieve.
In the device of described M type artificial swamp advanced treatment domestic sewage in rural areas, the region plantation of M type artificial swamp nearly secondary grid maker side is used for the calamus of shallow water, near the region plantation emergent reed of surface turbulence screen apparatus side.
In the device of described M type artificial swamp advanced treatment domestic sewage in rural areas, the molecular sieve filling in surface turbulence screen apparatus is with the standby granule type molecular sieve of coal ash for manufacturing.
In the device of described M type artificial swamp advanced treatment domestic sewage in rural areas, the sieving filler in surface turbulence screen apparatus is mixed by quartz sand, modified manganese sand and natural zeolite molecular sieve.
In the device of described M type artificial swamp advanced treatment domestic sewage in rural areas, the nonmetal doping photocatalyst in surface turbulence screen apparatus is nano-TiO
2powder, semi-conductor load filler is nano-TiO
2powder load is at solid netted polypropylene filler.
The method of M type artificial swamp advanced treatment domestic sewage in rural areas provided by the invention, its process is:
Two-stage grid maker divides the solid of two filtering accuracies to the different-grain diameter size in sewage effectively to tackle, and tentatively realizes solid-liquid separation, intercepts the large-sized solid in sewage, reduces the solid content in sewage, prevents the subsequent disposal of suspended substance to sewage from impacting;
M type artificial swamp is divided into two parts by partition wall, each part is divided into two regions, each region is upflowing and downflow system, the filler of filling in B district is used for a large amount of adsorption fouling load and slowly-releasing gradually, for reducing pollution load and toxicity, C district 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 imports the water outlet of M type artificial swamp when sieving, the water inlet surging force disturbance sieving filler of cross-flow and the top layer of molecular sieve filling is utilized in water inlet process, form turbulent flow, preventing pollution material is piled up on top layer and is formed resistance to smooth the passing through of current; The pollutent floated is pushed into the overflow of water surface side to backflash by bubble, mixes regulate influent quality with water inlet;
In surface turbulence screen apparatus, the nanometer aeration head air inlet of sieving filler is O
2, for clean sieving filler; The air inlet of the nanometer aeration head in water tank is O
3, obtain hydroxyl radical free radical by nanometer aeration, jointly improve advanced oxidation effect with ultraviolet sterilization lamp and semi-conductor load filler, be wherein rich in the water outlet of hydroxy radical qiao when device carries out backwash simultaneously, wash away sieving filler, sieving filler is cleaned and regenerates;
The mode of nanometer aeration is used to improve in surface turbulence screen apparatus
.oH production rate, makes microbubble have huge quantity, specific surface area, slowly lift velocity, increases gas liquid interfacial area, duration of contact, is beneficial to ozone soluble in water, overcomes the shortcoming that ozone is insoluble in water; When the microbubble pressure that has of inside and nano bubble break, interface disappears, and 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.
The effluent recycling of surface turbulence screen apparatus to the water inlet of M type artificial swamp, regulating water quality stimulating plant process of growth secretion secondary substance.
In the method for described M type artificial swamp advanced treatment domestic sewage in rural areas, ultraviolet sterilization lamp average shot dosage is at 300J/m
2above.
Technological operation of the present invention is simple, successful, use improvement M type artificial swamp, surface turbulence screen apparatus two kinds of device for mechanical methods and ecological method advanced treatment domestic sewage in rural areas, processing speed is fast, treatment cycle is short, easy and simple to handle, use M type artificial swamp improved treatment technology, dwell time of sewage is extended in the finite space, improve sewage treating efficiency, build more complicated excellent effective processing environment, the technique that simultaneously breaks traditions theory, 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 device schematic diagram of M type artificial swamp advanced treatment domestic sewage in rural areas of the present invention.Primary clustering nomenclature in accompanying drawing:
1 one-level grid maker; 2 secondary grid makers; 3 concrete walls; 4 calamus; 5 pebbless; 6 dividing plates; 7a, 7b mixed fillers; 8M type artificial swamp; 8a partition wall; 9 reeds; 10 inlet valves; 11 reducing water inlet pipes; 12 molecular sieve fillings; 13 surface turbulence screen apparatus; 14 sieving fillers; 15 reducing backwash pipes; 16 backwash valves; 17 outlet sumies; 18 hydro-pumps; 19 topping-up pumps; 20 flowing water Valves; 21 ultraviolet sterilization lamps; 22 porous plates; 23 nanometer aeration heads; 24 semi-conductor load fillers; 25 water tanks; 26 nanometer aeration machines; 27 boring pvc pipes; 28 zeolite fillers; 29 ultrasonic generators; 30 aeration tubes; 31 backflashes.
Embodiment
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.
Refer to Fig. 1.The device of M type artificial swamp advanced treatment domestic sewage in rural areas provided by the invention, its primary structure comprises:
One-level grid maker 1 connects secondary grid maker 2, secondary grid maker 2 is connected to M type artificial swamp 8, two filtering accuracies (two-stage grid maker filtering accuracy is respectively 21mm and 8mm) are divided effectively to tackle the solid of the different-grain diameter size in sewage, tentatively realize solid-liquid separation, intercept the large-sized solid in sewage, reduce the solid content in sewage, prevent the subsequent disposal of suspended substance to sewage from impacting.
The water outlet of M type artificial swamp 8 is connected to surface turbulence screen apparatus 13 by topping-up pump 9, and the water outlet of surface turbulence screen apparatus 13 is connected to outlet sump.
M type artificial swamp 8 is concrete wall, do Anti-seeping technology, wetland is divided into two parts by partition wall 8a, water inlet side (namely near secondary grid maker 2 side) is overall higher than water outlet side (near surface turbulence screen apparatus 13 side), wherein each part is divided into again two regions, A district and B district are a region, and C district and D district are a region.A district is upflowing, inside is filled with pebbles 5, dirty impurities in water is isolated, B district is downflow system, inside is filled with mixed fillers 7a, be sieved by the standby slow release molecules of coal ash for manufacturing and gac by volume 1:2-5 mix, mixed fillers 7 surface forms microbial film, form aerobic, anoxic, anaerobic state from top to bottom, go down except the pollution substance (left-half plants the calamus being used for shallow water, right half part plantation emergent reed) in sewage in root system of plant 4 and the synergy of microorganism.C district is upflowing, and inside is filled with mixed fillers 7b, is by volume for 1:2-5 mixes by Fu Luoli diatomite and red mud molecular sieve; D district is downflow system, and inside is filled with pebbles 5, and the derivation of water outlet is convenient in the large space that pebbles 5 has, and the water outlet of derivation sprays into surface turbulence screen apparatus 13 under the effect of topping-up pump 19.
Be provided with space between below partition wall 8a and bottom M type artificial swamp 8, the both sides in this space are respectively provided with respectively in a boring pvc pipe 27, two pvc pipes 27 and are all filled with zeolite filler.Zeolite filler is filled with for crossing water in the space formed between two pvc pipes 27 and partition wall 8a and M type artificial swamp 8.
Surface turbulence screen apparatus 13 is divided into upper and lower two parts by porous plate 22.The hole of porous plate 22 is skewed (the present embodiment is for being tilted to the right), sieving filler 14 is equipped with above porous plate 22, sieving filler 14 is by the mixture of quartz sand, modified manganese sand and natural zeolite molecular sieve, is the multi-functional mixed fillers integrating filtration, absorption, ion-exchange, coagulation and removal heavy metal.The bottom of sieving filler 14 is provided with nanometer aeration head 23, and the top layer of sieving filler 14 is filled with the standby molecular sieve filling 12 of coal ash for manufacturing, is provided with reducing water inlet pipe 11 in molecular sieve filling 12.This reducing water inlet pipe 11 is connected by the water outlet of topping-up pump 19 with M type artificial swamp 8.Surface turbulence screen apparatus 13 is positioned at below the opposite side of reducing water inlet pipe 11, is provided with reducing backwash pipe 15, connects outlet sump 17 by topping-up pump 19 in sieving filler 14.The top that surface turbulence screen apparatus 13 is positioned at reducing backwash pipe 15 is provided with backflash 31.Be positioned at backflash 31 side above sieving filler 14 and be provided with aeration tube 30, aeration tube 30 is provided with multiple pore solarization air cap, and pore solarization air cap vertically upward; Ultrasonic generator 29 is installed above sieving filler 14.It is water tank 25 below porous plate 22, water tank 25 inwall uniform loading one deck nonmetal doping photocatalyst, ultraviolet sterilization lamp 21 is installed bottom water tank 25, between the space of ultraviolet sterilization lamp 21, arrange nanometer aeration head 23, surface turbulence screen apparatus 13 remaining space inside is filled with semi-conductor load filler 24 (as nano-TiO
2powder load is at solid netted polypropylene filler), semi-conductor load filler 24 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.
When surface turbulence screen apparatus 13 carries out sieving, nanometer aeration intermittent aeration in water tank 25, during aeration, water tank internal gas pressure increases, air is cut into bubble by porous plate and heaves, impact sieving filler and molecular sieve filling, break up the pollution substance layer on sieving filler and molecular sieve filling surface and make it float, sewage can be filtered through sieving filler smoothly; Above sieving filler, right-hand member is provided with aeration tube, aeration tube is provided with multiple pore solarization air cap, solarization air cap vertically upward, the pollutent floated is pushed into the water surface by bubble, in right side overflow to backflash, mixes regulate influent quality with water inlet, extend screen apparatus work-ing life and backwash cycle simultaneously, for the situation that influent turbidity is lower, even without the need to back flushing, constantly can run and purify waste water.
Bottom sieving filler, the air inlet of nanometer aeration head is O
2, for clean filler; In water tank, the air inlet of nanometer aeration head is O
3obtain 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, 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 increases gas liquid interfacial area, duration of contact, is conducive to ozone soluble in water, overcomes 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 ultraviolet sterilization lamp average shot dosage is at 300J/m
2above.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.
The water outlet of M type artificial swamp is imported when surface turbulence screen apparatus works, water inlet pipe is embedded in the top layer of molecular sieve filling, the surging force disturbance molecular sieve filling top layer of utilization water inlet cross-flow in water inlet process, forms turbulent flow, and preventing pollution material is piled up on top layer and formed resistance to smooth the passing through of current; When carrying 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 supernatant liquor in outlet sump by backwash pipe simultaneously and carry out back flushing, reducing backwash pipe applies an inside direction force to sieving filler, and water tank is in water filling process, air on liquid level is extruded by brute force, sieving packing layer is risen to by porous plate, sieving filler is made to present boiling flow state, in water tank air emptying after, the hole that current continue through porous plate tilts upward flow at high speed, in whole backwash process, reducing backwash in-pipe flow inwardly rinses simultaneously, the filler (sieving filler and molecular sieve filling) of whole surface turbulence screen apparatus forms the turbulent flow of fast turn-around under the surging force of current, phase mutual friction in the counterclockwise micro cyclone that various filler is formed under the effect of different directions power, the organic pollutant of attachment is removed, be conducive to obtaining comparatively pure filler.Surface turbulence screen apparatus water tank water outlet is connected with outlet sump by a hydro-pump.
Device of the present invention is simple to operate, successful, use M type artificial swamp, surface turbulence screen apparatus two kinds of device for mechanical methods and ecological method advanced treatment domestic sewage in rural areas, processing speed is fast, treatment cycle is short, easy and simple to handle, use M type artificial swamp improved treatment technology, dwell time of sewage is extended in the finite space, improve sewage treating efficiency, build more complicated excellent effective processing environment, the technique that simultaneously breaks traditions theory, and kill intestinal bacteria, streptococcus aureus, virus etc., 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.
According to one embodiment of present invention, heavy metal removing rate is up to 100%, and trace organic substance content reduces by more than 95%, and proteinoid class material property fluorescence peak reduces by more than 90%.
The present invention adopts successively 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 26 above aeration tube 30 intermittently starting porous plate, the discontinuous work of nanometer aeration head in water tank, 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 bubble buoyancy of aeration tube and necking pipe water inlet thrust to the right synergy under produce impeller effect, clean the fine and close pollutent of filler top layer sheet energetically, overflow is to backflash, the pollutent that filler is retained is concentrated outside remover, mix with water inlet and again process, sewage also can continue the infiltration from molecular sieve space and go down, one-level back flushing can extend screen apparatus work-ing life and backwash cycle, for the situation that influent turbidity is lower, even without the need to back flushing, device constantly can be run and purify waste water.
Secondary back flushing is air pulse back flushing, because turbidity of sewage is too high, causes pollution substance at the bulk deposition of filling surface, only still can not reach the effect continuing sieving by one-level backwash step.Now close inlet valve 10, flowing water Valve 20, open backwash valve 16, start topping-up pump 19, aeration tube 30 and two nanometer aeration machines 26, the water outlet in outlet sump is imported in water tank.Under the effect of pressure of return water, whole air in water tank are subject to crushing failure at high speed, rise along pore, whole sieving packing layer is under the impact force action of the impeller effect of ascending air, swivel disturbance and the nanometer aeration head of sieving filler bottom, the pollution substance fragmentation of filler space is floated, again 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 26, backwash valve 16 below topping-up pump 19, porous plate, open inlet valve 10, flowing water Valve 2, 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 inlet valve 10, open backwash valve 16, flowing water Valve 20, start topping-up pump 19, aeration tube 30 and two nanometer aeration machines 26, ultrasonic generators 29, reverse starting hydro-pump 18, imports in water collecting basin in a large number by water outlet in outlet sump.(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) the collaborative cleaning of nanometer aeration techno-shock, oxidation, air supporting and high temperature action is utilized, 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) ultrasonic generator is utilized 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 the surperficial and micropore of filler particles, peel off pollution substance, filler is regenerated.(5) 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 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 semi-conductor load filler-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, and concrete preparation process is as follows: get titanium sulfate and urea is dissolved in deionized water, then adds appropriate glucose and stir, titanium sulfate: urea: the mol ratio=1:2:0.023 of glucose, 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 device for M type artificial swamp advanced treatment domestic sewage in rural areas, mainly comprises:
One-level grid maker connects secondary grid maker;
Secondary grid maker is connected to M type artificial swamp;
The water outlet of M type artificial swamp is connected to surface turbulence screen apparatus by topping-up pump;
The water outlet of surface turbulence screen apparatus is connected to outlet sump;
Wherein:
M type artificial swamp is concrete wall, does Anti-seeping technology, is divided into two parts by partition wall, and water inlet side is overall higher than water outlet side;
Be divided into two regions by partition wall in M type artificial swamp, be filled with mixed fillers respectively near the both sides of partition wall, be filled with pebbles near the both sides of concrete wall, dirty impurities in water is isolated;
Be provided with space between below partition wall and bottom M type artificial swamp, the both sides in this space and the bottom place of M type artificial swamp are respectively provided with a pvc pipe of holing abreast respectively, are all filled with zeolite filler in two pvc pipes; Zeolite filler is filled with for crossing water in the space formed between two pvc pipes and partition wall and M type artificial swamp;
The water outlet of M type artificial swamp enters surface turbulence screen apparatus by topping-up pump;
Surface turbulence screen apparatus is divided into upper and lower two parts by porous plate, sieving filler is equipped with above porous plate, the bottom of sieving filler is provided with nanometer aeration head, and the top layer of sieving filler is filled with molecular sieve filling, is provided with reducing water inlet pipe in molecular sieve filling; Surface turbulence screen apparatus is positioned at below the opposite side of reducing water inlet pipe, is provided with reducing backwash pipe, connects outlet sump by topping-up pump in sieving filler; The top that surface turbulence screen apparatus is positioned at reducing backwash pipe is provided with backflash, is positioned at backflash side and is provided with aeration tube above sieving filler, and aeration tube is provided with multiple 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.
2. the device of M type artificial swamp advanced treatment domestic sewage in rural areas according to claim 1, wherein, the filtering accuracy of one-level grid and secondary grid is respectively 21mm and 8mm.
3. the device of M type artificial swamp advanced treatment domestic sewage in rural areas according to claim 1, wherein, the mixed fillers of the water inlet side in M type artificial swamp to be sieved by the slow release molecules that coal ash for manufacturing is standby and gac 1: 2-5 mixes by volume, and the mixed fillers of water outlet side is 1: 2-5 to mix by volume by Fu Luoli diatomite and red mud molecular sieve.
4. the device of M type artificial swamp advanced treatment domestic sewage in rural areas according to claim 1, wherein, the region plantation of M type artificial swamp nearly secondary grid maker side is used for the calamus of shallow water, near the region plantation emergent reed of surface turbulence screen apparatus side.
5. the device of M type artificial swamp advanced treatment domestic sewage in rural areas according to claim 1, wherein, the molecular sieve filling in surface turbulence screen apparatus is with the standby granule type mesopore molecular sieve of coal ash for manufacturing.
6. the device of M type artificial swamp advanced treatment domestic sewage in rural areas according to claim 1, wherein, the sieving filler in surface turbulence screen apparatus is mixed by quartz sand, modified manganese sand and molecular sieve, and wherein adulterate a small amount of zeroth order Nanoscale Iron.
7. the device of M type artificial swamp advanced treatment domestic sewage in rural areas according to claim 1, wherein, the nonmetal doping photocatalyst in surface turbulence screen apparatus is nano-TiO
2powder, semi-conductor load filler is nano-TiO
2powder load is at solid netted polypropylene filler.
8. a method for M type artificial swamp advanced treatment domestic sewage in rural areas, its process is:
Two-stage grid maker divides the solid of two filtering accuracies to the different-grain diameter size in sewage effectively to tackle, and tentatively realizes solid-liquid separation, intercepts the large-sized solid in sewage, reduces the solid content in sewage, prevents the subsequent disposal of suspended substance to sewage from impacting;
M type artificial swamp is divided into two parts by partition wall, each part is divided into two regions, each region is upflowing and downflow system, inner mixed fillers surface of filling forms microbial film, form aerobic, anoxic, anaerobic state from top to bottom, go down except the pollution substance in sewage in the synergy of dark type root system of plant and microorganism;
Surface turbulence screen apparatus imports the water outlet of M type artificial swamp when sieving, the water inlet surging force disturbance sieving filler of cross-flow and the top layer of molecular sieve filling is utilized in water inlet process, form turbulent flow, preventing pollution material is piled up on top layer and is formed resistance to smooth the passing through of current; The pollutent floated is pushed into the overflow of water surface side to backflash by bubble, mixes regulate influent quality with water inlet;
In surface turbulence screen apparatus, the nanometer aeration head air inlet of sieving filler is O
2, for clean sieving filler; The air inlet of the nanometer aeration head in water tank is O
3, obtain OH by nanometer aeration, jointly improve advanced oxidation effect with ultraviolet sterilization lamp and semi-conductor load filler, be wherein rich in the water outlet of OH when device carries out backwash simultaneously, wash away sieving filler, sieving filler is cleaned and regenerates;
The mode of nanometer aeration is used to improve OH production rate in surface turbulence screen apparatus, microbubble is made to have huge quantity, specific surface area, slowly lift velocity, increase gas liquid interfacial area, duration of contact, be beneficial to ozone soluble in water, overcome the shortcoming that ozone is insoluble in water; Microbubble inside there is pressure and microbubbles rupture time interface disappear, the chemical energy that surrounding environment acutely changes generation impels and produces more OH, 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 OH, accelerates organic degraded, is processed organic pollutant by the strong oxidation of OH.
9. the method for M type artificial swamp advanced treatment domestic sewage in rural areas according to claim 8, wherein, ultraviolet sterilization lamp average shot dosage is at 300J/m
2above.
10. the method for M type artificial swamp advanced treatment domestic sewage in rural areas according to claim 8, wherein, the effluent recycling of surface turbulence screen apparatus to the water inlet of M type artificial swamp, regulating water quality stimulating plant process of growth secretion secondary substance.
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| CN104496110B (en) * | 2014-12-04 | 2016-09-07 | 北京建筑大学 | Soil filtration device |
| CN105502839A (en) * | 2016-01-18 | 2016-04-20 | 湖南博惢巳环境科技有限公司 | Wastewater treatment system for livestock and poultry breeding |
| CN105731731B (en) * | 2016-03-25 | 2018-06-05 | 浙江科技学院 | River point-source pollution intercepts cleaning system |
| CN107162338B (en) * | 2017-06-26 | 2020-07-21 | 华北电力大学 | Multi-medium treatment system and method for removing antibiotics in wastewater through micro-power |
| US10717665B2 (en) | 2018-06-14 | 2020-07-21 | Shaoguan University | Multi-stage medical sewage sterilization device and method based on graphene nano technologies |
| CN111943389A (en) * | 2019-05-17 | 2020-11-17 | 安徽伊尔思环境科技有限公司 | Domestic wastewater treatment device and method |
| CN111320325A (en) * | 2020-03-12 | 2020-06-23 | 高自通 | Activated carbon sewage treatment device with monitoring device and method |
| CN113511727A (en) * | 2021-05-27 | 2021-10-19 | 长沙理工大学 | System for coupling photocatalysis treatment of organic pesticide waste water in constructed wetland |
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