CN104961291A - Vertical multistage ao ecological sewage treatment system - Google Patents
Vertical multistage ao ecological sewage treatment system Download PDFInfo
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- CN104961291A CN104961291A CN201510295439.6A CN201510295439A CN104961291A CN 104961291 A CN104961291 A CN 104961291A CN 201510295439 A CN201510295439 A CN 201510295439A CN 104961291 A CN104961291 A CN 104961291A
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to a vertical multistage AO ecological sewage treatment system. The vertical multistage AO ecological sewage treatment system is characterized in that sewage is orderly treated by a coarse screen, a lifting pump house, a fine screen, a grit basin, a vertical multistage AO ecological tank, a cloth filter tank and a UV disinfection canal and then is discharged by a standard discharge opening, and sludge produced by the fine screen, the grit basin, the vertical multistage AO ecological tank and the standard discharge opening is transferred into a sludge storage tank, then is treated in a dehydration machine room and can be carted. The treatment system has less sludge amount (of sludge-drainage time of 20-25 years), does not produce odor, realizes thorough removal of organic matters, provides a carbon source produced in sludge stabilization for denitrification demands, reduces an external carbon source, produces water satisfying first-grade standard A or B, can be used for construction of an ecological landscape park, has the advantages of less construction investment and short construction period, can utilize waste and old or existing pits, ponds, trenches and slopes, and has a construction period of 4-6 months.
Description
Technical field
The present invention relates to a kind for the treatment of tank, refer to the ecological wastewater treatment system of a kind of vertical multistage AO especially.
Background technology
The main body structures in vertical multistage AO ecological sewage treatment pond are the ponds that a depth of water is greater than 6 meters.Its main body is formed by stacking by sludge stabilization and storage area, anaerobic layer, layer of oxygen deficient, aerobic zone, plant growing district etc. vertical (from bottom to top).It is an artificial ecosystem be made up of biological (as: bacterium, algae, protozoon, metazoan, waterplant, high hydrocoles) and abiotic (illumination, wind, temperature, organism, pH value, dissolved oxygen, N and P nutritive element etc.) part.
The top of each septal area in the pre-treatment district in existing vertical multistage AO ecological sewage treatment pond is uncovered structure, the sewage upwards flowed by bottom directly can flow to aerobic zone by layer of oxygen deficient, the time that sewage stops in anaerobic layer and layer of oxygen deficient is relatively short, the anaerobic degradation of sewage in anaerobic layer and the anti-nitration reaction time at layer of oxygen deficient short, if wastewater influent flow is large, then easily react incomplete situation, and then affect the treatment effect of sewage.For this reason, the flooding velocity in the sewage pre-treatment district in existing vertical multistage AO ecological sewage treatment pond needs the degree of depth being restricted or needing greatly to increase water-in, and the sewage treatment capacity for the treatment of tank is limited or laid down cost is higher.
Summary of the invention
The invention provides the ecological wastewater treatment system of a kind of vertical multistage AO, to overcome the problem that sewage treatment capacity is limited or laid down cost is higher that existing treatment tank exists.
The present invention adopts following technical scheme:
The ecological wastewater treatment system of vertical multistage AO, sewage discharges through effluent standard mouth through the process of coarse rack, lift pump room, fine fack, settling pit, vertical multistage AO ecological pool, filtering cloth filtering pool, uv sterilisation canal successively; The mud that fine fack, settling pit, vertical multistage AO ecological pool and effluent standard mouth produce is transferred to mud storage pool, and can transport outward through dehydration machine room process; This vertical multistage AO ecological pool comprises pre-treatment district and advanced treatment district, this pre-treatment district is made up of sludge blanket superimposed successively from bottom to top, anaerobic layer, layer of oxygen deficient and aerobic layer, form a plurality of septal area by crisscross baffle for separating in pre-treatment district, dividing plate top is positioned at the intersection of above-mentioned aerobic layer and layer of oxygen deficient; Each septal area top cover is provided with ballast plate, and each ballast plate is equipped with at least one through hole.
Further:
Each above-mentioned through hole is up big and down small taper hole shape.Configuration thing on through hole following two kinds: one is preferably that each above-mentioned through hole has all set up a baffle, and this baffle is is integrally connected and composed by tip two cone-shaped bodys upward and down, and the lower cone wall of baffle is roughly the same with the gradient of through hole hole wall; Baffle can be hollow structure, and baffle mounted inside has aerobic filler and/or oxygen-starved filler, and baffle is also equipped with the aerated conduit for connecting steam line and forms aeration structure.Further, the lower cone wall of baffle and/or through hole hole wall are provided with spiral salient or spiral groove.Two are, are configured with the aerating apparatus of prior art routine above each above-mentioned through hole, and this aerating apparatus is assemblied in above-mentioned ballast plate; This aerating apparatus comprises the main box of open top, and be laid with a plurality of through flowing hole bottom main box, main box sidewall is provided with at least one intake ducting, intake ducting the inner and main box inner space, and intake ducting outer end is communicated with supply air line; This intake ducting the inner is provided with the air vent of a plurality of equidistant arrangement linearly; The intracavity bottom of main box is provided with filling body, and this filling body covers all above-mentioned flowing holes and is located at the below of above-mentioned intake ducting; Filling body is made up of carrying case and the filler be assemblied in carrying case, is provided with above-mentioned flowing hole one_to_one corresponding and the through hole be communicated with up and down bottom this carrying case; This filler is aerobic filler or oxygen-starved filler; Two edges, outer side wall tops that main box opposes fixedly are equipped with the buoyancy aid that density is less than sewage respectively.
Above-mentioned pre-treatment district and advanced treatment district are configured with a plurality of bacteria bed respectively, and this bacteria bed kind is implanted with waterplant; This bacteria bed is made up of at least two-layer buoyancy aid, and the float of top layer is in the water surface; Adjacent two layers buoyancy aid is connected as one by a plurality of joint pin, forms accommodating area between adjacent two layers buoyancy aid, is equipped with accommodating device in this accommodating area, is equipped with haydite and/or blast furnace slag filtrate in this accommodating device.
Above-mentioned pre-treatment district is also configured with reflux pump, and sewage laterally flows out pre-treatment district after above-mentioned aerobic layer is by forward direction, and this reflux pump is used for the front end of being drawn back by the sewage of aerobic layer rear end to aerobic layer.
Be configured with coagulation basin between above-mentioned pre-treatment district and above-mentioned advanced treatment district, the sewage that pre-treatment district flows out flows to advanced treatment district after this coagulation basin of fruit.
Above-mentioned pre-treatment district is equipped with water inlet system, a plurality of subtubes that this water inlet system comprises main pipeline and is communicated with main pipeline, the end that this main pipeline is connected with this subtube is embedded in the below for the treatment of tank, and the top also extending to sludge blanket at the bottom for the treatment of tank pond is straight up run through in the upper end of subtube.
In addition, each septal area is all configured with at least one above-mentioned subtube.Further, each septal area is configured with an above-mentioned subtube respectively, and subtube is located at Chi Di center, septal area, and the water outlet of subtube is opened on the sidewall of subtube top, and such vibrational power flow is conducive to the even diffusion of sewage.In addition, each subtube is all configured with a motorized valve and a magnetic flow meter, to realize Automated condtrol wastewater influent amount.
Sewage enters in the anaerobic layer of corresponding septal area by the subtube of water inlet system, forms wastewater influent multiple spot diffusion way and enters pre-treatment district; Sewage completes anaerobic degradation in anaerobic layer, completes particle and can sink more greatly the sedimentation of suspended substance and the Partial digestion of dissolved organic matter, comprise organic hydrolysis and methanation, can hypostasis sedimentation, anaerobic layer COD clearance is 40% ~ 60%; Then sewage upwards flows into layer of oxygen deficient, by the backflow of aerobic layer mixed solution, carries out denitrification in oxygen-starved area, realizes the removal of total nitrogen; Flow into the sewage of aerobic layer by aerobic aeration by layer of oxygen deficient, carry out organism aerobic degradation, the process such as nitrated, after entering aerobic layer, water (flow) direction becomes level (i.e. transverse flow).Layer of oxygen deficient, aerobic layer are assembled by I, II type piecing assembly biochemistry group locking device (difference of I, II type biochemistry group locking device is assembled filler), biochemistry group locking device is made up of aerating apparatus and filler, mixed-liquor return facility etc., and above-mentioned treatment facility all can be implemented installation, safeguards, change under ecological pool water filling condition.Sewage is horizontal plug-flow by anoxic, aerobic zone, through multi-stage anaerobic, aerobic alternate treatment and repeatedly mixed-liquor return, completes the removal of organic degraded and total nitrogen.Simultaneously also be laid with bacteria bed in ecological pool pre-treatment district and advanced treatment district two treatment zone, to catch the aerosol that aeration process produces, slow down the impact on surrounding environment, and create conditions for species diversity.The sludge settling that anaerobism, anoxic, Aerobic biological process process produce enters sludge blanket and carries out anaerobic digestion, the available depth that ecological pool is unconventional and be anaerobic sludge digestion provides needed for very suitable biochemical reaction envrionment conditions (temperature, basicity and dissolved oxygen control etc.) to the vertical distribution characteristics of water temperature stability.The soluble organic that residue biochemical sludge and the organism that can sink are formed at sludge blanket liquefaction process diffuses into layer of oxygen deficient, for denitrification provides extra effective carbon source, further increases the clearance of total nitrogen.Aerobic layer water outlet to enter after coagulation basin penetration depth treatment zone again.The bacteria bed laid in advanced treatment district, its function removes suspended substance a small amount of in the water outlet of aerobic zone further; Many the food chains (net) that the bacteria bed laid by ecological pool sets up biodiversity formation are further processed sewage remaining hardly degraded organic substance after secondary biochemical treatment.
From the above-mentioned description to structure of the present invention, compared to the prior art, tool of the present invention has the following advantages: ecological pool of the present invention has sludge quantity few (sludge-drainage time 20 ~ 25 years), odorless, organic matter removal is thorough, the carbon source produced in sludge stabilizing process supplements the carbon source needed for denitrogenation, decreases additional carbon; Realize the minimizing of pollutent, water outlet Absorbable organic halogens reaches one-level A or one-level B standard, can make ecoscape, improve the ecological environment-build Ecological Park; Also solve the problem of outlet of municipal sewage plant a large amount of mud, extend the working life (sludge disposal dissolve cost amount to ton water treatment expense 0.2 ~ 0.3 yuan) of refuse landfill, reduce the running cost of sewage disposal simultaneously, kill two birds with one stone.Also there is the advantage that construction investment economizes, the construction period is short, waste and old or existing hole, the pool, ditch, hillside fields can be utilized, without second pond and sludge recirculation system, without sludge disposal and stink process required equipment and relevantly to build, structures, can according to practical situation flexibly, scattering device, reduce the investment of sewage collecting pipe network; The construction period (install, construct, intake and debug) of 4 ~ 6 months.
In addition, the resistance that the vibrational power flow of ballast plate of the present invention gives the sewage manufacture of upwards flowing certain, sewage is made to form convection current between anaerobic layer and layer of oxygen deficient, thus extend the anaerobic degradation time of sewage in anaerobic layer and the anti-nitration reaction time at layer of oxygen deficient, make anerobic sowage degrade and denitrification more complete, the COD clearance of sewage improves 30 ~ 40%, and the clearance of total nitrogen improves 25 ~ 45%; And the through-hole structure on ballast plate is arranged, make sewage can rapid diffusion in aerobic layer, thus improve organism aerobic degradation, nitrated efficiency, and then effectively improve the wastewater treatment efficiency of single AAO process, reduce the load of follow-up sewage disposal operation, improve the efficiency of overall sewage disposal.
In addition, the pipeline major part in sewage pre-treatment district of the present invention is embedded in underground, neither takies the space of sewage purification reaction; also the protection of pipeline is conducive to; make pipeline not subject to outside destroy, reduce pipeline and to be corroded rotten degree, thus effectively extend the work-ing life of pipeline.And the roughly constant temperature of underground makes sewage enter before in treatment tank pond can be adjusted, make it roughly the same with the water temperature in pond, be conducive to sewage to react efficiently in pond, also be conducive to keeping the constant of pool inner water temperature, and then the stable living environment of the ecosystem in guarantee pond, also ensure that the purification efficiency of sewage.
Accompanying drawing explanation
Fig. 1 is the anatomical connectivity schematic diagram of ecological wastewater treatment system of the present invention.
Fig. 2 is the sectional structure schematic diagram of the ecological pool of embodiment one.
Fig. 3 is the enlarged view of the local A in Fig. 2.
Fig. 4 is the main TV structure schematic diagram of bacteria bed.
Fig. 5 is the sectional structure schematic diagram of ecological pool pool wall and vegetation slope pavement.
Fig. 6 is the sectional structure schematic diagram of the ecological pool of embodiment two.
Fig. 7 is the enlarged view of the local B in Fig. 4.
Fig. 8 is the sectional structure schematic diagram of the ecological pool of embodiment three.
Fig. 9 is the enlarged view of the Local C in Fig. 6.
Figure 10 is the sectional structure schematic diagram of the aerating apparatus of embodiment three.
Figure 11 is the enlarged view of the local D in Figure 10.
Embodiment
With reference to the accompanying drawings the specific embodiment of the present invention is described.
Embodiment one
With reference to Fig. 1, the ecological wastewater treatment system of vertical multistage AO, sewage discharges through effluent standard mouth through the process of coarse rack, lift pump room, fine fack, settling pit, vertical multistage AO ecological pool, filtering cloth filtering pool, uv sterilisation canal successively.The mud that fine fack, settling pit, vertical multistage AO ecological pool and effluent standard mouth produce is transferred to mud storage pool, and can transport outward through dehydration machine room process.Further, coarse rack and fine fack all adopt rotary type grid sewage-removing machine, are equipped with submersible sewage pump in lift pump room, and settling pit adopts rotational flow grit chamber.This ecological wastewater treatment system is also configured with biological deodorizing system and divides two portions, and one is gathering system, and two is treatment systems.Gathering system is by the smelly source point covering of garden sewage work or add a cover collection, such as between grid, settling pit, sludge dewatering room etc., is then transported to odor removal processes through collecting airduct; Treatment system adopts biological dripping and filtering system, and it is primarily of centrifugal blower and foul smell delivery system, pre-wash pool, biological filter, sprinkling system four part composition.
With reference to Fig. 2, Fig. 3, above-mentioned vertical multistage AO ecological pool comprises pre-treatment district 1 and advanced treatment district 2, this pre-treatment district 1 is made up of sludge blanket 11 superimposed successively from bottom to top, anaerobic layer 12, layer of oxygen deficient 13 and aerobic layer 14, be separated to form a plurality of septal area 10 by crisscross dividing plate 15 in pre-treatment district 1, dividing plate 15 top is positioned at the intersection of above-mentioned aerobic layer 14 and layer of oxygen deficient 13.Each septal area 10 top cover is provided with ballast plate 16, and each ballast plate 16 is equipped with at least three through holes 160, and through hole 160 is up big and down small taper hole shape.The resistance that the vibrational power flow of ballast plate 16 gives the sewage manufacture of upwards flowing certain, sewage is made to form convection current between anaerobic layer 12 and layer of oxygen deficient 13, thus extend the anaerobic degradation time of sewage in anaerobic layer 12 and the anti-nitration reaction time at layer of oxygen deficient 13, make anerobic sowage degrade and denitrification more complete, the COD clearance of sewage improves 30 ~ 40%, and the clearance of total nitrogen improves 25 ~ 45%; And through hole 160 vibrational power flow on ballast plate 16, make sewage can rapid diffusion in aerobic layer 14, thus improve organism aerobic degradation, nitrated efficiency, and then effectively improve the wastewater treatment efficiency of single AAO process, reduce the load of follow-up sewage disposal operation, improve the efficiency of overall sewage disposal.
Continue with reference to Fig. 2, Fig. 3, each above-mentioned through hole 160 above-mentioned all sets up a baffle 161, and this baffle 161 is is integrally connected and composed by tip two cone-shaped bodys upward and down, and the lower cone wall of baffle 161 is roughly the same with the gradient of through hole 160 hole wall.The baffle 161 of present embodiment is solid construction, the spiral salient 162 and the lower cone wall of baffle 161 has been periphery, the setting of this spiral salient 162 sewage of convection current via through holes 160 can play certain guide functions, make it to form certain rotating fluid, improve the velocity of diffusion of sewage at aerobic layer 14 further.The ecological pool of present embodiment also needs configuration I type and II type aerating apparatus, but does not illustrate in Fig. 2.The mud that aerobic layer 14 produces is when downward sedimentation, and mud can enter layer of oxygen deficient 13 along baffle 161 and through hole 160 hole wall, and then is settled down to sludge blanket 11.
Continue with reference to Fig. 2, above-mentioned pre-treatment district 1 is equipped with water inlet system 3, a plurality of subtubes 32 that this water inlet system 3 comprises main pipeline 31 and is communicated with main pipeline 31, and the end that this main pipeline 31 is connected with this subtube 32 is embedded in the below of at the bottom of pond 4.The upper end of subtube 32 to run through at the bottom of pond, pre-treatment district 14 and the anaerobic layer 12 extended to straight up above sludge blanket 11.In addition, each above-mentioned septal area 10 is configured with an above-mentioned subtube 32 respectively, subtube 32 is located at 4 centers at the bottom of pond, septal area 10, and the water outlet of subtube 32 is opened on the sidewall of subtube 32 top, and the flow direction of sewage is as shown in the arrow points of both sides, subtube in Fig. 2 32 top; This water distribution being conducive to sewage regional in septal area 10 is even.In addition, each subtube 32 is all configured with a motorized valve and a magnetic flow meter 321, to realize Automated condtrol wastewater influent amount.The pipeline major part in sewage pre-treatment district 1 of the present invention is embedded in underground; neither take the space of sewage purification reaction, be also conducive to the protection of pipeline, make pipeline not subject to outside destroy; reduce pipeline to be corroded rotten degree, thus effectively extend the work-ing life of pipeline.And the roughly constant temperature of underground makes sewage enter before in pre-treatment district 1 can be adjusted, make it roughly the same with the water temperature in pond, be conducive to sewage to react efficiently in pond, also be conducive to keeping the constant of pool inner water temperature, and then the stable living environment of the ecosystem in guarantee pond, also ensure that the purification efficiency of sewage.
In addition, with reference to Fig. 4, above-mentioned pre-treatment district 1 and advanced treatment district 2 are configured with a plurality of bacteria bed 5 respectively, this bacteria bed 5 kinds is implanted with waterplant 51, the foliage portion of waterplant 51 extends to the top face of bacteria bed 5, and the root 511 of waterplant 51 extends to the subjacent of bacteria bed 5 and is immersed in the aerobic layer in vertical multistage AO ecological sewage treatment pond.Be equipped with accommodating device 52 in this bacteria bed 5, in this accommodating device 52, be equipped with the filtrate for Phosphate Sorption, filtrate by single haydite or single blast furnace slag or the mixing of haydite and blast furnace slag.Bacteria bed 5 is made up of two-layer buoyancy aid 53, and the buoyancy aid 53 of top layer floats on the water surface; Adjacent two layers buoyancy aid 53 is arranged the joint pin 54 of linearly arranging by two and is connected as one, and enclose between adjacent two layers buoyancy aid 53 and between two row's joint pins 54 and form accommodating area 50, above-mentioned accommodating device 52 is assemblied in this accommodating area 50.The vibrational power flow of the bacteria bed 5 of present embodiment is both for the plantation of waterplant 51 provides carrier, again can accommodating absorbent filter medium, the removal effect of the phosphorus in treating pond and suspended substance is further improved, and the absorption of filtrate makes phosphorus enrichment on bacteria bed 5, and then provide nutrient for waterplant 51 grows, be conducive to the quick growth of waterplant 51, also the plant variety making bacteria bed 5 to plant is more various (as planted the flowers that may be used for viewing and admiring and selling on bacteria bed 5, ornamental value and economic benefit is improved) while promoting the clearance of phosphorus, enrich the ecological kind in vertical multistage AO ecological sewage treatment pond, make the structure of biologic chain more quick and complete, thus build many food chains (net) of biodiversity formation, sewage remaining hardly degraded organic substance after biochemical treatment is further processed, good improvement result is served to wastewater treatment efficiency.
Continue with reference to Fig. 2, above-mentioned pre-treatment district 1 is also configured with reflux pump 17, sewage laterally flows out pre-treatment district 1 after above-mentioned aerobic layer 14 is by forward direction, this reflux pump 17 is for drawing back the front end to aerobic layer 14 by the sewage of aerobic layer 14 rear end, make sewage at flow forward through each septal area, again carry out AO reaction.Be configured with coagulation basin 9 between above-mentioned pre-treatment district 1 and above-mentioned advanced treatment district 2, the sewage that pre-treatment district 1 flows out flows to advanced treatment district 2 after this coagulation basin 9 of fruit.
In addition, with reference to Fig. 5, at the bottom of the pond of ecological pool 4, being configured to of the vegetation slope pavement 7 of pool wall 6 and configuration:
Continue with reference to Fig. 5, pool wall 6, be made up of the pool wall main body 61 covered on ecological pool slope base soil 8, to be compaction coefficient be on the surface of base soil 8 0.94 grinding compacting layer.The gradient of pool wall main body 61 is 58 ~ 60 degree, and the selection of this gradient makes pool wall main body 61 can ensure very high structural strength, also can not be very large to the pressure of base soil 8.Continue with reference to Fig. 5, this pool wall main body 61 is made up of cement sand bed 62, geo membrane layers 63, sloping wall 64 and soil nail wall 65 from outside to inside successively, and soil nail wall 65 connects with base soil 8.The mean thickness of cement sand bed 62 is 20 ~ 30 millimeters.Geo membrane layers 63 is the HDPE composite geo-membrane of two cloth one films, and two cloth one films are using plastics film as antiseepage base material, and with non-woven fabric compounded seepage by geo-textile material, the thickness of geo membrane layers 63 is 1 millimeter; Geo membrane layers 63 can infiltrate base soil 8 by effectively anti-sealing.Every 12 meters of sloping wall 64 arranges one temperature joint, temperature joint is named expansion joint again, crack is produced because of climate change for preventing pool wall 6, it is every 12 meters of reserving gaps along pool wall 6 length direction, pool wall 6 is disconnected in circumference, the width at expansion joint is generally 2 centimetres to 3 centimetres, fills out lagging material in seam.Soil nail wall 65 refers to that side slope is reinforced by the soil nailing be made up of reinforcing bar, and side slope surface is laid one reinforcing mat and sprayed the slope reinforcement type construction method for supporting that one deck concrete surface layer and base soil 8 side slopes combine again.The vibrational power flow of pool wall 6 of the present invention makes it possess good seepage capability; and good structural strength can be kept for a long time; pool wall 6 is very firm with the connection of base soil 8; pool wall 6 is sturdy and durable; base soil 8 is also played a very good protection; and then reduce the maintenance of pool wall 6, reduce the cost of the process of sewage.
First by undisturbed soil (i.e. base soil) grinding compacting bottom pond, compaction coefficient 0.94, and spread fine sand levelling blanket (average thick 100mm) thereon; Do impervious barrier (HDPE composite geo-membrane, two cloth one films, thick 1mm) more thereon; Finally spread 500mm thick-bedded clay and grinding compacting, compaction coefficient is 0.94.
Continue with reference to Fig. 5, vegetation slope pavement 7, be made up of the bank protection main body 71 covering ecological pool bank portion, the gradient of bank protection main body 71 is 30 ~ 45 degree.This bank protection main body 71 is fixedly covered in base soil 8 surface, and the surface of base soil 8 is grinding compacting layer, and this is conducive to the structural strength ensureing vegetation slope pavement 7.This bank protection main body 71 is made up of pebble bed 72, plantation soil layer 73 and PE geo membrane layers 74 from outside to inside successively; waterplant 51 is planted in this plantation soil layer 73 place; the mean thickness of pebble bed 72 is 200 millimeters; cobble particle diameter is that 30 ~ 40 millimeters of pebble beds 72 can play a very good protection to plantation soil layer 73; the loss of effective minimizing planting soil; PE geo membrane layers 74 thickness is 1 millimeter, and PE geo membrane layers is two cloth one film geomembranes, and PE geo membrane layers 74 can infiltrate base soil 8 by effectively anti-sealing.In addition; also be laid with the fine sand levelling blanket 75 that compaction coefficient is 0.94 between PE geo membrane layers 74 and base soil 8, the mean thickness of this fine sand levelling blanket 75 is 100 millimeters, the setting of fine sand levelling blanket 75; be conducive to the protection of PE geo membrane layers 74, avoid sharp protrusion to scratch PE geo membrane layers 74.The vibrational power flow of vegetation slope pavement 7 of the present invention is that waterplant constructs and well plants basis, and planting soil not easily occurs this vegetation slope pavement 7 runs off, the plantation of waterplant then further enhances the structural strength of bank protection, adding of waterplant, enrich the ecological kind in vertical multistage AO ecological sewage treatment pond, make biologic chain more complete, thus build the more perfect ecosystem, certain improvement result is served to wastewater treatment efficiency.
Finally, the mode of operation of ecological pool of the present invention is: sewage enters in the anaerobic layer of corresponding septal area by the subtube of water inlet system, forms wastewater influent multiple spot diffusion way and enters pre-treatment district 1; Sewage completes anaerobic degradation in anaerobic layer, completes particle and can sink more greatly the sedimentation of suspended substance and the Partial digestion of dissolved organic matter, comprise organic hydrolysis and methanation, can hypostasis sedimentation, anaerobic layer COD clearance is 40% ~ 60%; Then sewage upwards flows into layer of oxygen deficient, by the backflow of aerobic layer mixed solution, carries out denitrification in oxygen-starved area, realizes the removal of total nitrogen; Flow into the sewage of aerobic layer by aerobic aeration by layer of oxygen deficient, carry out organism aerobic degradation, the process such as nitrated, after entering aerobic layer, water (flow) direction becomes level (i.e. transverse flow).Layer of oxygen deficient, aerobic layer are assembled by I, II type piecing assembly biochemistry group locking device (difference of I, II type biochemistry group locking device is assembled filler), biochemistry group locking device is made up of aerating apparatus 18 and filler, mixed-liquor return facility etc., and above-mentioned treatment facility all can be implemented installation, safeguards, change under ecological pool water filling condition.Sewage is horizontal plug-flow by anoxic, aerobic zone, through multi-stage anaerobic, aerobic alternate treatment and repeatedly mixed-liquor return, completes the removal of organic degraded and total nitrogen.Simultaneously also be laid with bacteria bed 5 in ecological pool pre-treatment district 1 and 2 liang, advanced treatment district treatment zone, to catch the aerosol that aeration process produces, slow down the impact on surrounding environment, and create conditions for species diversity.The sludge settling that anaerobism, anoxic, Aerobic biological process process produce enters sludge blanket and carries out anaerobic digestion, the available depth that ecological pool is unconventional and be anaerobic sludge digestion provides needed for very suitable biochemical reaction envrionment conditions (temperature, basicity and dissolved oxygen control etc.) to the vertical distribution characteristics of water temperature stability.The soluble organic that residue biochemical sludge and the organism that can sink are formed at sludge blanket liquefaction process diffuses into layer of oxygen deficient, for denitrification provides extra effective carbon source, further increases the clearance of total nitrogen.Aerobic layer water outlet to enter after coagulation basin penetration depth treatment zone 2 again.The bacteria bed 5 laid in advanced treatment district 2, its function removes suspended substance a small amount of in the water outlet of aerobic zone further; Many the food chains (net) that the bacteria bed 5 laid by ecological pool sets up biodiversity formation are further processed sewage remaining hardly degraded organic substance after secondary biochemical treatment.
Embodiment two
Present embodiment and embodiment one difference are: with reference to Fig. 6, Fig. 7, the baffle 161 of present embodiment is hollow structure, some production wells 167 and baffle 161 epicone wall has been periphery, baffle 161 times cone walls have been periphery some water holes 163, or as shown in Figure 4, Figure 5, water hole 163 is located at baffle 161 bottom, the mounted inside of baffle 161 has aerobic filler 164 and/or oxygen-starved filler 164, and baffle 161 is also equipped with the aerated conduit 165 for connecting steam line and forms aeration structure.The air that aerated conduit 165 blasts upwards is discharged by production well 167, and the sewage upwards flowed by layer of oxygen deficient 13 also enters in baffle 161 by water hole 163, and the mud entered in baffle 161 is also discharged by water hole 163.
Embodiment three
Present embodiment and embodiment one difference are: with reference to Fig. 8, Fig. 9, the aeration structure of present embodiment adopts the aerating apparatus 18 of prior art routine, with reference to Figure 10, aerating apparatus 18 is located at above each through hole 160, and this aerating apparatus 18 is assemblied on above-mentioned ballast plate 16.This aerating apparatus 18 comprises the main box 181 of open top, is laid with a plurality of through flowing hole 180 bottom main box 181.Two edges, outer side wall tops that main box 181 opposes fixedly are equipped with the floating bar 183 that density is less than sewage respectively, and the setting of floating bar 183 reduces the dependence of main box 181 pairs of bracing frames.As shown in Figure 10, this main box 181 sidewall is provided with two intake ductings 182, and intake ducting 182 the inner and main box 181 inner space, intake ducting 182 outer end is communicated with supply air line.Intake ducting 182 the inner is provided with the air vent 184 of a plurality of equidistant arrangement linearly.
In addition, continue with reference to Figure 10, Figure 11, the intracavity bottom of above-mentioned main box 181 is provided with filling body 185, and this filling body 185 covers all above-mentioned flowing holes 180 and is located at the below of above-mentioned intake ducting 182.Further, this filling body 185 is made up of carrying case 186 and the filler 187 be assemblied in carrying case 186, is provided with above-mentioned flowing hole 180 one_to_one corresponding and the ventilating pit 188 be communicated with up and down bottom this carrying case 186; This filler 187 is aerobic filler or oxygen-starved filler, and aerobic filler and oxygen-starved filler are in interval alternative distribution.Aerobic filler carries abundant aerobic flora, and oxygen-starved filler carries abundant anoxic flora, also can be mixed with anaerobic bacteria flora, thus forms one and stable denitrogenate the ecosystem.
In addition, continue with reference to Figure 10, between two inner side-walls that above-mentioned main box 181 opposes, erection has flow deflector 189.The filler of one side-lower of flow deflector 189 can be set to aerobic filler, and this side is configured with above-mentioned intake ducting 182; And the filler below flow deflector 189 opposite side can be set to oxygen-starved filler, intake ducting 182 air input that this side does not configure intake ducting 182 or configuration is less; Flow deflector 189 is for separating and the sewage entered in main box 181 that leads, namely sewage after the main box 181 of this vibrational power flow carried out an AO biochemical treatment, make the biochemical treatment that sewage can occur repeatedly in once vertical flowing, thus increase substantially the efficiency of biochemical wastewater treatment, the removal efficiency of COD can reach more than 85%, ammonia nitrogen removal frank can reach more than 99%, and the clearance of total nitrogen can reach more than 75%.
In addition, with reference to Fig. 9, through hole 160 hole wall is also laid with spiral groove 166, and the setting of spiral groove 166 sewage of convection current via through holes 160 can play certain guide functions, make it to form certain rotating fluid, improve the velocity of diffusion of sewage at aerobic layer 14 further.
Above are only the specific embodiment of the present invention, but design concept of the present invention is not limited thereto, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should belong to the behavior of invading scope.
Claims (10)
1. the ecological wastewater treatment system of vertical multistage AO, is characterized in that: sewage discharges through effluent standard mouth through the process of coarse rack, lift pump room, fine fack, settling pit, vertical multistage AO ecological pool, filtering cloth filtering pool, uv sterilisation canal successively; The mud that fine fack, settling pit, vertical multistage AO ecological pool and effluent standard mouth produce is transferred to mud storage pool, and can transport outward through dehydration machine room process; This vertical multistage AO ecological pool comprises pre-treatment district and advanced treatment district, this pre-treatment district is made up of sludge blanket superimposed successively from bottom to top, anaerobic layer, layer of oxygen deficient and aerobic layer, form a plurality of septal area by crisscross baffle for separating in pre-treatment district, dividing plate top is positioned at the intersection of described aerobic layer and layer of oxygen deficient; Each septal area top cover is provided with ballast plate, and each ballast plate is equipped with at least one through hole.
2. the ecological wastewater treatment system of vertical multistage AO as claimed in claim 1, is characterized in that: through hole described in each is up big and down small taper hole shape; Through hole described in each has all set up a baffle, and this baffle is is integrally connected and composed by tip two cone-shaped bodys upward and down, and the lower cone wall of baffle is roughly the same with the gradient of through hole hole wall.
3. the ecological wastewater treatment system of vertical multistage AO as claimed in claim 2, is characterized in that: lower cone wall and/or the described through hole hole wall of described baffle are provided with spiral salient or spiral groove.
4. the ecological wastewater treatment system of vertical multistage AO as claimed in claim 2, it is characterized in that: described baffle is hollow structure, baffle mounted inside has aerobic filler and/or oxygen-starved filler, and baffle is also equipped with the aerated conduit for connecting steam line.
5. the ecological wastewater treatment system of vertical multistage AO as claimed in claim 1, is characterized in that: be configured with aerating apparatus above through hole described in each, and aerating apparatus is assemblied in described ballast plate; This aerating apparatus comprises the main box of open top, and be laid with a plurality of through flowing hole bottom main box, main box sidewall is provided with at least one intake ducting, intake ducting the inner and main box inner space, and intake ducting outer end is communicated with supply air line; This intake ducting the inner is provided with the air vent of a plurality of equidistant arrangement linearly; The intracavity bottom of main box is provided with filling body, and this filling body covers all described flowing holes and is located at the below of described intake ducting; Filling body is made up of carrying case and the filler be assemblied in carrying case, is provided with described flowing hole one_to_one corresponding and the through hole be communicated with up and down bottom this carrying case; This filler is aerobic filler or oxygen-starved filler; Two edges, outer side wall tops that main box opposes fixedly are equipped with the buoyancy aid that density is less than sewage respectively.
6. the ecological wastewater treatment system of vertical multistage AO as claimed in claim 1, it is characterized in that: described pre-treatment district and advanced treatment district are configured with a plurality of bacteria bed respectively, this bacteria bed kind is implanted with waterplant; This bacteria bed is made up of at least two-layer buoyancy aid, and the float of top layer is in the water surface; Adjacent two layers buoyancy aid is connected as one by a plurality of joint pin, forms accommodating area between adjacent two layers buoyancy aid, is equipped with accommodating device in this accommodating area, is equipped with haydite and/or blast furnace slag filtrate in this accommodating device.
7. the ecological wastewater treatment system of vertical multistage AO as claimed in claim 1, it is characterized in that: described pre-treatment district is also configured with reflux pump, sewage laterally flows out pre-treatment district after described aerobic layer is by forward direction, and this reflux pump is used for the front end of being drawn back by the sewage of aerobic layer rear end to aerobic layer.
8. the ecological wastewater treatment system of vertical multistage AO as claimed in claim 1, is characterized in that: be configured with coagulation basin between described pre-treatment district and described advanced treatment district, and the sewage that pre-treatment district flows out flows to advanced treatment district after this coagulation basin of fruit.
9. the ecological wastewater treatment system of vertical multistage AO as claimed in claim 1, is characterized in that: described pre-treatment district is equipped with water inlet system, a plurality of subtubes that this water inlet system comprises main pipeline and is communicated with main pipeline; The end that this main pipeline is connected with this subtube is embedded in the below for the treatment of tank, and the top also extending to sludge blanket at the bottom for the treatment of tank pond is straight up run through in the upper end of subtube.
10. the ecological wastewater treatment system of vertical multistage AO as claimed in claim 9, is characterized in that: septal area described in each is all configured with subtube described at least one, and subtube is distributed at the bottom of pond, septal area; And each subtube is all configured with a motorized valve and a magnetic flow meter, the water outlet of subtube is opened on the sidewall of subtube top.
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Effective date of registration: 20231218 Address after: No. 35, Group 4, Maliu Village, Zhagu Township, Jianwei County, Leshan City, Sichuan Province, 614405 Patentee after: Tang Hongjun Address before: Floor 5, No. 1 Xiangjiang Road, Baogai Town, Shishi City, Quanzhou City, Fujian Province, 362714 Patentee before: FUJIAN GUANGHUILONG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |