CN106830329A - Double-decker three-dimensional circular-flow integration oxidation ditch - Google Patents
Double-decker three-dimensional circular-flow integration oxidation ditch Download PDFInfo
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- CN106830329A CN106830329A CN201710200444.3A CN201710200444A CN106830329A CN 106830329 A CN106830329 A CN 106830329A CN 201710200444 A CN201710200444 A CN 201710200444A CN 106830329 A CN106830329 A CN 106830329A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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Abstract
The present invention relates to a kind of double-decker three-dimensional circular-flow integration oxidation ditch, including the rectangle form pool surrounded by front and rear headwall and both walls, if connecting one between anoxic zone, aerobic zone, solid-liquid displacement zone, water inlet pipe, outlet pipe and discharge pipeline, both walls by flat board and inclining the oblique L-shaped deflector that deflector is constituted；It is characterized in that pond body bottom sets the horizontal baffle that pond body is divided into upper and lower pond body；Oblique L-shaped deflector is located at upper pool body middle and lower part；Correspondence flat board forward position to back-end wall sets aerator group on horizontal baffle, and correspondence flat board forward position sets uniform liquid pass hole；Aerobic zone is in whole upper pool body；Solid-liquid displacement zone is above flat board；Anoxic zone is in whole lower pool body；Pond body corner sets square straight tube, and the impeller under water that can be lifted is installed in correspondence pond body bottom corner in cylinder；If mixed-liquor return hole；If hanging choked flow wall；Water inlet pipe is located at lower pool body back-end wall；Discharge pipeline is located at upper pool body bottom front wall；Outlet pipe is located on the corresponding side wall in solid-liquid displacement zone.
Description
Technical field
The present invention relates to a kind of dirty, waste water disposal facility, more particularly to a kind of flow integrated oxygen of double-decker stereo circulating
Change ditch.
Background technology
Oxidation ditch is that have the time delay aeration activated sludge method water process work being thoroughly mixed with overall plug-flow hydraulics characteristic
Skill, dirty, waste water and activated sludge mix and circulate in closing trench passage.Due to " closed cycle flow " of its uniqueness
Hydraulic characteristic and sludge age more long and relatively low organic loading the characteristics of, it is good to become effluent quality, strong shock resistance,
Stable, sludge discharge capacity is low and disposable investment and the relatively low water treatment technology of operating cost, in municipal sewage and
It is widely used in Industrial Wastewater Treatment.In recent years, with the functional pools such as solid-liquid separator, anaerobic pond, anoxic pond and oxidation
Ditch tap drain builds the overall Round Sump oxidation ditch in same structures jointly, also referred to as integrated oxidation ditch, because intensive degree is high, de-
Nitrogen effect is good and is widely used.At present, the oxidation ditch of new generation being characterized with stereo circulating stream has walked out laboratory and phase
After appearance, it reduces on the basis of earlier generations oxidation ditch, especially integrated oxidation ditch plurality of advantages is inherited and takes up an area, and contribution is more
It is protrusion.Gas lift plug-flow three-dimensional circular-flow integration oxidation ditch in stereo circulating stream oxidation ditch family is more in tables of equipment one, section
There can be prominent performance with aspect simple to operate is run, enjoy industry to pay close attention to.
At present, oxidation Ditch Technology is still fully excavating and using on the basis of conventional oxidation ditch hydraulic characteristic, towards
Taken up an area and energy-conservation with further reduction, lifting Nitrogen/Phosphorus Removal and reduce operating cost for the new ditch type of target, new energy-conservation set
The research and development of the aspects such as standby and simple operation mode.
Patent ZL200810053029.0 " the Zanjon type gas-lift stream-pull tridimensional circulation type inversion A for having reported2O integrally builds jointly
Oxidation ditch " is intended to using the gas lift motive force produced by aeration process, is realizing the entirety to mixed liquor in oxidation ditch raceway groove
While promotion, make mixed liquor stereo circulating and realize aerobic and anoxic subregion by setting horizontal centre dividing plate, reach raising
Nitrogen removal rate, energy-conservation, the purpose for reducing equipment installed capacity and further reduction oxidation ditch occupation of land.The patent of follow-up report
ZL201010150135.8 " follow by the funneling solid-liquid separator of bar shaped and the gas lifting pulsation push flowing solid using the solid-liquid separator
Epoxidation ditch " is on the basis of above-mentioned patent, to have made further improvement.Its structure is identical with above-mentioned first patent, in oxidation ditch
Aerobic zone, solid-liquid displacement zone, anoxic zone are provided with ditch body, are set in the middle and lower part of ditch body and ditch body is divided into upper and lower two layer intercommunication
The horizontal baffle of raceway groove, its improvement is that the horizontal baffle rear end connection extends rearwardly and upwardly and top is vertical end plate
Deflector is inclined, so as to form oblique L-shaped deflector.Its solid-liquid displacement zone employs the funneling solid-liquid separator of bar shaped.The gas lift
Pulsation push flowing tridimensional circulating oxidation ditch achieves good effect in terms of structure, energy-conservation, raising effluent quality is simplified.It is follow-up again
The patent ZL201210047699.8 " symmetrical opposite three-dimensional circular-flow integration oxidation ditch " of report is again in above-mentioned patent base
On plinth, further improvement is made, its structure is by two groups of structures, the identical gas lift push flowing tridimensional circulating oxidation ditch of form
The oxidation ditch of a kind of new ditch type formed in same rectangle form pool body is placed in opposite directions.The flow integrated oxygen of opposite symmetrical stereo circulating
Changing ditch makes two bursts of main flows converge in ditch middle position, clash into, shunt again so that the impact resistance enhancing of oxidation ditch, effluent characteristics are more
It is stabilization.While two symmetrical aeration zone, aerobic zone and anoxic zones are oppositely arranged in ditch, obtain the entire length of oxidation ditch
To extension, the single-groove scale of construction that stereo circulating stream oxidation ditch is limited by certain height, length ratio is solved, become adaptation
Fairly large stereo circulating stream oxidation ditch.
But existing gas lift plug-flow three-dimensional circular-flow integration oxidation ditch still suffers from certain technological deficiency:(1) because aerobic
Area, anoxic zone cause denitrification effect and bottom of pond to sink mud with pond and to prevent the heavy mud from must keep rate of circulating flow higher again
Contradiction is not solved well；(2), because aeration head is aerated on unbalanced or inclination deflector the problems such as along not level, gas is caused
Rising plug-flow area, flow distribution easily occur unbalance, and influences solid-liquid separation effect.(3) take up an area still bigger than normal；(4) vast agriculture is applied to
Village, small-sized, the miniature oxidation ditch that can play gas lift plug-flow three-dimensional circular-flow integration oxidation ditch technical advantage of samll cities and towns are because of it
Denitrification is insufficient caused by water-flow chart is short, rate of circulating flow is fast, denitrification effect difference and be difficult to apply；(5) pond body is opening, with
Outside air bump contact, anoxic zone produces emission of bad smell to space, pollutes environment.
The content of the invention
It is a primary object of the present invention to regarding to the issue above, in the existing flow integrated oxidation of gas lift plug-flow stereo circulating
The basis of ditch carries out the improvement in ditch body structure, there is provided go out a kind of double-decker three-dimensional circular-flow integration oxidation ditch, so as to reach
Reduced to floor space, denitrification process is abundant, improve denitrification effect, and the mud that sinks is reduced, peculiar smell indiffusion, energy-conservation, and is applicable model
Expansion is enclosed, is especially more suitable for the effect of small-sized, miniature stereo circulating stream oxidation ditch application.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of double-decker three-dimensional circular-flow integration oxidation ditch, including the square crowded around by forward and backward headwall and both walls
Shape pond body, is provided with anoxic zone, aerobic zone, solid-liquid displacement zone, raw water water inlet pipe, outlet pipe and discharge pipeline in the pond body,
It is connected in the pond body, between both walls one and is extended rearwardly and upwardly and top is vertical end plate along connected by flat board and thereafter
Incline the oblique L-shaped deflector that deflector is constituted；It is characterized in that pond body is separated into pond body bottom setting separate
Upper and lower pond body double-deck pool structure horizontal baffle；The oblique L-shaped deflector is arranged on upper pool body middle and lower part；In the water
Aerator group is set from position corresponding with the forward position of the flat board to the back-end wall root on flat partition board；The level every
The forward position of the correspondence flat board is uniformly arranged the liquid pass hole of multiple upper and lower pond bodies of connection on plate；The aerobic zone is distributed in entirely
Aerobic Pond is formed in upper pool body；The solid-liquid displacement zone is arranged on the flat board top；The anoxic zone is distributed in entirely lower pond
Anoxic pond is formed in vivo；Top is respectively provided with pond body corner connect the square straight of lower pool body along concordant and base opening along with pond body top
Cylinder, correspondence pond body bottom corner location, the impeller under water that installation can be lifted in the square straight tube；Near the oblique L
In two opposing sidewalls on square straight tube top of the inclination deflector of shape deflector, the mixed liquor for being provided with regulation flashboard is returned
Discharge orifice；It is located between the opposing sidewalls on front side of the mixed-liquor return hole in described two square straight tube upper ends and is connected across pond body
Hanging choked flow wall；The raw water water inlet pipe is arranged on the corresponding back-end wall of lower pool body；The discharge pipeline is arranged on upper pool body bottom
On the front end wall in portion；The outlet pipe is arranged on the corresponding side wall in the solid-liquid displacement zone.
Service area≤the 0.5M of each aeration head in the aerator group2。
The funneling solid-liquid separator of bar shaped is used in the solid-liquid displacement zone.
In the lower pool body bottom along its longitudinal centre line, setting be connected between the horizontal baffle and pond body bottom and
Leave the training wall of same space in two ends.
The horizontal baffle is located at pond body total high 1/3~2/5；The flat board is located at the 1/3~1/2 of upper pool body height
Place；Angle is 135 °~145 ° between the inclination deflector and flat board；The flat board forward position has a down dip the gradient for 2~4%.
Liquid pass hole >=5,1.5 times of all liquid pass hole area summations >=water inlet pipe pore area.
The some forward flow guide bars parallel to side wall are uniformly arranged side by side in the planar bottom surface of the oblique L-shaped deflector,
The forward flow guide bar is identical with slab length, its quantity >=5.
The upper edge in the mixed-liquor return hole is less than liquid level higher than liquid level, its lower edge；Edge and pond on the hanging choked flow wall
Along flushing on body, its lower edge is less than liquid level.
The discharge pipeline is a mesh sludge pipe section by closed at both ends and the mud extraction extended outside pond of perpendicular connection
The T-shaped pipe that pipeline section is constituted.
The beneficial effects of the invention are as follows：(1) oxidation ditch is separated into by upper and lower two spaces, i.e. upper pool body using horizontal baffle
And lower pool body, the aerobic zone of oxidation ditch and anoxic zone are completely independent, existing stereo circulating stream oxidation ditch is efficiently solved because good
Oxygen area, the same ditch body in anoxic zone are difficult to reduce anoxic zone dissolved oxygen concentration, cause to improve denitrification effect with the heavy mud delay of bottom of pond
Contradiction, realization both ensured anoxic zone denitrification fully, improve nitrogen removal efficiency, aerobic zone can also keep rate of circulating flow higher to subtract
The effect that the mud that sinks less is detained.(2) upper and lower pond body double-decker is used, space can be made full use of, reduce floor space.(3) model is adapted to
Expansion is enclosed, miniaturization, the miniaturization of gas lift plug-flow oxidation ditch is especially suitable for.(4) oblique its entirety of L-shaped deflector that aerobic zone is set
There is certain slope, and some forward flow guide bars parallel to side wall are uniformly arranged side by side in planar bottom surface；Because plate face is present
The gradient, therefore when appropriate turning down when aeration rate reduces stereo circulating flow velocity does not produce heavy mud yet, so as to reach energy-conservation.Additionally, logical
Cross forward flow guide bar by stereo circulating stream uniform divided flows, it is ensured that aerobic zone stereo circulating stream fluidised form is balanced steady, solves because of oblique L
The horizontal error that causes when shape deflector is built and influence and cause up-flow zone flow skewness weighing apparatus problem, lifting solid-liquid point
From effect.(5) the anoxic zone for being most also easy to produce stench is placed in the lower pool body of closing, is effectively isolated, digests peculiar smell, do not pollute ring
Border.(6) the square straight tube with mixed-liquor return hole and hanging choked flow wall of the upper and lower pond body of connection for being set by pond body, are realized
Aerobic mixed liquor without pump reflux, the capacity of returns of aerobic mixed liquor can be strictly controlled ensure the anaerobic environment of anoxic zone,
While lifting denitrification effect, simple to operate, energy-conservation.(7) expansion is eliminated using the funneling solid-liquid separator of bar shaped dirty
Mud On The Floating, it is ensured that effluent quality is good, (8) in addition to anoxic zone is using impeller under water, other plug-flows and nitrification liquid backflow etc.
Required power is provided by aerating system, saves equipment investment and energy resource consumption, and whole oxidation ditch, construction cost is low, is built
Speed is fast.
Brief description of the drawings
Fig. 1 is top view of the invention；
Fig. 2 is the A-A cross section views of Fig. 1；
Fig. 3 is horizontal baffle position of the invention top view；
Fig. 4 is lower pool body top view of the invention；
Fig. 5 is the fluidised form figure of upper pool body；
Fig. 6 is the fluidised form figure of lower pool body；
Fig. 7 is the funneling solid-liquid separator structural representation of bar shaped.
In figure：1 pond body, 1a upper pool bodies, 1b lower pool bodies, 11 back-end walls, 12 side walls, 13 front end walls, 2 hanging choked flow walls, 31
Aerobic zone, 32 solid-liquid displacement zones, 33 anoxic zones, 311 gas lift plug-flows section, 312 forward level stream sections, 313 sinkings section, after 314
Water-filling advection section, 4 solid-liquid separators, 41 solid-liquid separator end plates, 411 water inlets, 42 solid-liquid separator front end-plates, 421 receive
Mill weir delivery port, 43 water legs, 431 cross chute delivery port, 44 bar shaped funnel groups, 45 bar shaped funnels, 451 stripe boards, 46 drainings
Mouthful, 47 receive mill weir, and 48 cross chute, 5 outlet pipes, 6 square straight tubes, 61 mixed-liquor return holes, 7 oblique L-shaped deflectors, 71 flat boards, 72
Incline deflector, 73 vertical end edges, 8 forward flow guide bars, 9 horizontal baffles, 91 liquid pass holes, 10 discharge pipelines, 101 mesh sludge pipes
Section, 102 mud extraction pipeline sections, 14 impellers under water, 15 training walls, 16 aerator groups, 17 raw water water inlet pipes, 18 regulation flashboards.
Below in conjunction with drawings and Examples to the detailed description of the invention.
Specific embodiment
Fig. 1~4 show a kind of double-decker three-dimensional circular-flow integration oxidation ditch, including by forward and backward headwall 13,11, two
The rectangle pond body 1 that side wall 12 is crowded around, anoxic zone 33, aerobic zone 31 and solid-liquid displacement zone 32, raw water are provided with the pond body 1
Water inlet pipe 17, outlet pipe 5 and discharge pipeline 10, are connected one by flat board 71 and thereafter along solid in the pond body, between both walls 12
Extension rearwardly and upwardly and top even is the oblique L-shaped deflector that deflector 72 is constituted that inclines of vertical end plate 73；Spy of the invention
Levy is to set the water of the double-deck pool structure that pond body is separated into separate upper and lower pond body 1a, 1b in the bottom of the pond body 1
Flat partition board 9；Some forward flow guide bar 8 parallel to side wall are uniformly arranged side by side in the bottom surface of flat board 71 of oblique L-shaped deflector 7,
The forward flow guide bar 8 is identical with the length of flat board 71, its quantity >=5.Stereo circulating stream is uniformly divided by forward flow guide bar
Stream, it is ensured that stereo circulating stream fluidised form in aerobic zone is balanced steady, the horizontal error caused by solving when oblique L-shaped deflector is built and
Up-flow zone flow skewness weighing apparatus problem is influenceed and caused, solid-liquid separation effect is lifted.
In actually building, horizontal baffle 9 is located at pond body total high 1/3~2/5；The flat board 71 is located at upper pool body 1a
At the 1/3~1/2 of height；It is 135 °~145 ° to incline angle between deflector 72 and flat board 71；The forward position of flat board 71 has a down dip the gradient
It is 2~4%.In this example, horizontal baffle 9 is located at pond body total high 1/3, and flat board 71 is located at the 2/5 of upper pool body 1a height；Incline
Tiltedly angle is 140 ° between deflector 72 and flat board 71；The forward position of flat board 71 has a down dip the gradient for 3%；And be provided with the bottom surface of flat board 71
6 forward flow guide bar 8.
Set from position corresponding with the forward position of the flat board 71 to the root of the back-end wall 12 on the horizontal baffle 9
Put aerator group 16.Service area≤the 0.5M of each aeration head in aerator group 162.The setting requirements of aerator group 16 reach
Aerating gas are covered by oblique L-shaped deflector substantially, circulation is flowed to gas lift plug-flow section and are concentrated, and keep head to have certain height
Release kinetic energy.Meanwhile, recycle stream sinking section 313 is avoided the influence of aerator gas raising speed, reduce water resistance.
The forward position of the correspondence flat board 71 is uniformly arranged multiple upper and lower pond bodies 1a, 1b of connection on the horizontal baffle 9
Liquid pass hole 91.In actually building, liquid pass hole >=5, the pore of the area summation >=water inlet pipe 17 of all liquid pass holes 91
1.5 times of area.In this example, liquid pass hole 91 sets 7, and the single aperture of liquid pass hole is 10mm, the aperture of water inlet pipe 17 for
25mm, 1.5 times of the pore area of the area summation >=water inlet pipe 17 of liquid pass hole.
The aerobic zone 31 is distributed in and Aerobic Pond is formed in whole upper pool body 1a；The solid-liquid displacement zone 32 is arranged on described
The top of flat board 71；The operation of whole stereo circulating stream is carried out around oblique L-shaped deflector 7, is led in the inclination of oblique L-shaped deflector 7
It is gas lift plug-flow section 311 between stream plate 72 and back-end wall 11, is the level stream section 312 that moves ahead on oblique L-shaped deflector top, in oblique L
Shape water conservancy diversion prelaminar part is that the region between the forward position of flat board 71 and front end wall 13 is sinking section 313, is in L-shaped deflector bottom
Afterwards water-filling advection section 314.The anoxic zone 33 is distributed in and anoxic pond is formed in whole lower pool body 1b.
In the present invention, the solid-liquid displacement zone 32 employs patent ZL201010150135.8 " the funneling solid-liquids of bar shaped point
From device and application the solid-liquid separator gas lifting pulsation push flowing tridimensional circulating oxidation ditch " in the funneling separation of solid and liquid of bar shaped
Device.As shown in fig. 7, the funneling solid-liquid separator 4 of bar shaped its heavy mud replaces component to be hung down by the bar shaped funnels of multiple connections side by side
Straight to be fixed on the bar shaped funnel group 44 that the forward and backward end plate 42,41 of separator is formed, bar shaped funnel is with base by two stripe boards 451
Possess interval and symmetrically outward-dipping setting and stripe board both ends close at formed on forward and backward end plate 42,41 respectively.This example
In, 5 bar shapeds are provided with solid-liquid separator 4 and cross the bar shaped funnel 45 that chute 48,6 receives the connection arranged side by side of mill weir 47,6, two
Stripe board angle is 50 °, and two stripe board bases are at intervals of 3cm.Bar shaped funnel group employs steel plate frame structure.Leaked using bar shaped
Bucket type solid-liquid separator eliminates solid-liquid separator bulking sludge On The Floating, it is ensured that effluent quality is good.
In pond body, 1 four jiaos are respectively provided with top along the square straight tube 6 for connecting lower pool body 1b along concordant and base opening with pond body top, right
Pond body bottom corner location is answered, impeller 14 under water that can be lifted are installed in the square straight tube 6.The Si Taishui that corner is set
Lower impeller 14, with two diagonally for one group, and the plug-flow of two groups of impellers under water is in opposite direction.During work, lacking
In oxygen area, two groups of alternations of impeller 14 under water make liquid stream be flowed along forward and reverse commutation, reach and are sufficiently stirred for not sunk with turning
The effect of mud.
In two opposing sidewalls on the top of square straight tube 6 near the inclination deflector end of the oblique L-shaped deflector, if
The mixed-liquor return hole 61 with regulation flashboard 18 is put, the upper edge in mixed-liquor return hole is less than liquid level higher than liquid level, its lower edge.
Described two upper ends of square straight tube 6 are located between the opposing sidewalls on front side of the mixed-liquor return hole 61 and are connected across the hanging of pond body
Choked flow wall 2, the upper edge of hanging choked flow wall 2 is with, along flushing, lower edge is less than liquid level in pond body.Its effect is, by setting hanging resistance
Stream wall, can partly be stopped the mixed liquor of gas lift plug-flow, and enter anoxic zone 33 by two mixed-liquor return holes 61, real
Existing aerobic zone mixed liquor is to purpose of the anoxic zone without pump reflux.Regulation flashboard 18 can as needed adjust backflow water yield.
In the lower pool body 1b bottoms along its longitudinal centre line, setting be connected in the horizontal baffle 9 and the bottom of pond body 1 it
Between and the training wall 15 of same space is left at two ends.
The raw water water inlet pipe 17 is arranged on the corresponding back-end walls 11 of lower pool body 1b.
The discharge pipeline 10 is arranged on the front end wall 13 of upper pool body 1a bottoms；Discharge pipeline 10 be one by closed at both ends net
The T-shaped pipe that hole sludge pipe section 101 and the mud extraction pipeline section 102 extended outside pond of perpendicular connection are constituted.Discharge pipeline 10 leans on gravity
Pressure will accumulate in headwall root corner's silt and part mixed liquor is irregularly discharged.
The outlet pipe 5 is arranged on the corresponding side wall 12 in solid-liquid displacement zone 32.
The course of work of the invention and principle are as follows:
In the present embodiment, oxidation ditch floor space 55.26m2, basin's effective volume 250m3, 4.5m high, 9m long, width 6.17m, place
Reason raw water (sewage) amount is 12.5m3/ h, micro-hole aerator group 16 is using continuous supply working method.Fig. 5, Fig. 6 show its work
Make principle.Wherein Fig. 5 shows lower pool body 1b flow-shape figures of the present invention.In figure：Hollow arrow represents that raw water enters oxidation ditch road
Footpath, filled arrows represent mixed liquor flow direction.Raw water flows into oxidation ditch lower pool body by water inlet pipe 17, under water impeller 14
In the presence of mix with the mixed liquor in oxidation ditch lower pool body, and under this under water promotion of impeller mixed liquor in lower pool body
Horizontally rotate.Four impellers under water that lower pool body is set, two into a group for diagonally going up, one group is normally opened group, one group
It is normally closed group, normally opened group is only opened in day-to-day operation, it is ensured that mixed liquor can flows toward the direction.In this process
In, the denitrifying bacteria in mixed liquor carries out the total nitrogen that denitrification is gone in water removal under anaerobic environment.When running one section
Between after, generally 6-10 hours (time length according to operating mode determine) closes normally opened group；Then, normally closed group, general operation are opened
1-2 hours, mixed liquor is reversely promoted, prevent the deposition of activated sludge, disturbance from still opening normally opened group of impeller under water after terminating
Carry out day-to-day operation.
Fig. 6 shows upper pool body 1a flow-shape figures of the present invention.Filled arrows are mixed liquor flow direction, hollow arrow in figure
It is nitrification liquid backflow direction.After lower pool body mixed liquor is full of lower pool body space, by static pressure and by liquid pass hole 91 in aerator
The gas lift effect that group 16 is provided is lower into oxidation ditch upper pool body.Lower pool body 1b mixed liquors are mixed after entering upper pool body with upper pool body
Liquid is closed to be thoroughly mixed in the presence of aeration agitation, and as current enter gas lift aerobic zone under the power that gas lift current are provided
311, rising mixed liquor on rear side of upper pool body can part inflow mixed-liquor return hole 61 and by square straight tube 6 as nitrification liquid
Anoxic zone 33 is back to, for nitration reaction provides nitrogen source, the size in mixed-liquor return hole 61 can be adjusted by adjusting flashboard 18
So as to control the capacity of returns of nitrification liquid, mixed liquor rises to the vertical end for inclining deflector along 73 highest water along deflector 72 is inclined
Kinetic energy is fully converted to gravitional force during position, and inclination training wall top dramatic decrease of jumping over enters aerobic zone 31, in one's respective area
Aerobic activated sludge effect under, mainly go divided by COD, BOD be mark carbon source it is contaminants associated and nitrifier act under
Ammonia Nitrification is converted into cultured water, nitrification liquid is formed under the premise of degradation of ammonia nitrogen concentration, be that denitrification denitrogenation creates conditions.
After completing hydraulic retention and aerobic biochemical reaction under the action of turbulent flow of aerobic zone, part mixed liquor enters positioned at solid-liquid displacement zone 32
Solid-liquid separator 4.In solid-liquid separator, supernatant flows out oxidation ditch as the water outlet after treatment through outlet pipe 5, precipitates
Excess sludge, returns to aerobic zone 31 under the drive of solid-liquid separator bottom turbulent flow, and new mixed liquor enters solid-liquid displacement zone again
Form continuous water outlet current.Mixed liquor to flow through turn back down after oblique L-shaped deflector and is advanced into flat board lower section, enters in the case where power is aerated
Row stirring oxygenation enters back into gas lift aerobic zone 311, and so go round and begin again circulation.After operation a period of time, excessive sludge can be with
Arranged by discharge pipeline 10 is outer, so as to control sludge age and reduce the content of phosphorus in mixed liquor.
The present invention takes double-decker to design, and the anoxic zone with denitrification is arranged at into oxidation ditch lower pool body, i.e.,
Anoxic pond.If using the gas lifting pulsation push flowing tridimensional circulating oxidation ditch of the funneling solid-liquid separator of aforementioned applications bar shaped, if
Obtain enough anaerobic environments to meet denitrification, it is necessary to increase the 15% of oxidation ditch anoxic zone ditch body volume.Cause
On the premise of identical disposal ability, treatment effect, the present invention can reduce oxidation ditch pond body volume compared with prior art for this
15%, and then save floor occupying area.
The invention also achieves anoxic zone with aerobic zone strictly disjointing under continuous condition of work so that in oxidation ditch
Oxygen gradient significant change, anaerobic environment is more obvious to be conducive to the denitrification of denitrifying bacteria, so as to obtain preferably de-
Nitrogen effect.
The present invention only needs regulation to adjust flashboard 18 and can just control the flow of backflow nitrification liquid, has been truly realized without pump reflux
With the purpose that nitrification liquid capacity of returns can be just controlled by simple operations.
The anoxic zone that the present invention will be also easy to produce peculiar smell is arranged on lower pool body, so as to reduce shadow of the foul gas to surrounding environment
Ring.
It is of the invention internal in addition to lower pool body under water power needed for impeller plug-flow, its aerobic zone plug-flow, nitrification liquid backflow institute
Power is needed to be provided by aerating system, so as to save the consumption of the input and the energy of equipment to greatest extent.
In addition to solid-liquid separator is using material-structures such as steel, plastics, remaining can use coagulation to component inside the present invention
Soil structure, construction cost is low, and construction speed is fast, and the fabrication design of solid-liquid separator is also very easy, and oxidation Ditch Technology sheet
Fluctuation of the body to water quality, water just has good adaptability, so the present invention can be as the main technique of scale water factory
Selection, it is also possible to as the handling process of Miniature Sewage Farm.
Application effect of the invention
In the present embodiment, oxidation ditch floor space 55.26m2, treatment raw water (sewage) amount is 12.5m3/ h, micro-hole aerator
Group 16 is using continuous supply working method.
Raw water meets following condition：
BOD5:COD≥1:3；Residence time >=16.5 of the raw water in double-decker three-dimensional circular-flow integration oxidation ditch
Hour；Influent COD 350-600mg/L；Ammonia nitrogen 25-45mg/L；Total nitrogen 30-50mg/L；Total phosphorus 2-5mg/L.
Sewage disposal result is：COD 30-48mg/L, clearance (is used more than 90%《The measure of GB11914-89 COD
Dichromate titration》Determine)；Ammonia nitrogen 3.5-5mg/L, clearance (uses GB7479-87 more than 90%《The measure Na Shi of water quality ammonium
Reagent colorimetric method》Determine)；Total nitrogen 6-10mg/L, total removal rate (is used more than 85%《The measure of GB11894-89 water quality total nitrogens
Alkaline chitinase clears up ultraviolet spectrophotometry》Determine), total phosphorus 0.4-1.0mg/L, clearance (is used more than 80%
《The measure ammonium molybdate spectrophotometric method of GB11983-89 water quality total phosphorus》Determine)；Go out aqueous suspension (to be used less than 10mg/L
《The gravimetry method of GB11901-89 water quality suspensions》Determine).
Comparative example：Treatment raw water (sewage) amount is 12.5m3/ h, using the gas lifting pulsation of the funneling solid-liquid separator of bar shaped
Push flowing tridimensional circulating oxidation ditch, floor space 64m2, solid-liquid separator, raw water condition and above-mentioned double-decker stereo circulating stream
Integrated oxidation ditch is identical.
Sewage disposal result is:COD 30-48mg/L, clearance (is used more than 90%《The measure of GB11914-89 COD
Dichromate titration》Determine)；Ammonia nitrogen 3.5-5mg/L, clearance (uses GB7479-87 more than 90%《The measure Na Shi of water quality ammonium
Reagent colorimetric method》Determine)；Total nitrogen 8-14mg/L, total removal rate (is used more than 70%《The measure of GB11894-89 water quality total nitrogens
Alkaline chitinase clears up ultraviolet spectrophotometry》Determine)；Total phosphorus 0.6-1.4mg/L, clearance (is used more than 70%
《The measure ammonium molybdate spectrophotometric method of GB11983-89 water quality total phosphorus》Determine)；Go out aqueous suspension (to be used less than 10mg/L
《The gravimetry method of GB11901-89 water quality suspensions》Determine).
Be can be seen that using the present invention by above-mentioned comparing result, the dirty, nitrogen removal rate of waste water leaks than existing use bar shaped
The nitrogen removal rate of the gas lifting pulsation push flowing tridimensional circulating oxidation ditch of bucket type solid-liquid separator can improve more than 10%, take up an area face
Product reduces 13.6%.
The above, is only the preferred embodiments of the present invention, not makees any shape to structure of the invention and shape
Limitation in formula, every any simple modification made to above example according to technical spirit of the invention, equivalent variations with
Modification, still falls within the range of technical solution of the present invention.
Claims (9)
1. a kind of double-decker three-dimensional circular-flow integration oxidation ditch, including the rectangle crowded around by forward and backward headwall and both walls
Pond body, is provided with anoxic zone, aerobic zone, solid-liquid displacement zone, raw water water inlet pipe, outlet pipe and discharge pipeline, in institute in the pond body
One is connected in stating pond body, between both walls by flat board and extended rearwardly and upwardly and top is inclining for vertical end plate along connected thereafter
The oblique L-shaped deflector that oblique deflector is constituted；It is characterized in that pond body is separated into pond body bottom setting separate
The horizontal baffle of the double-deck pool structure of upper and lower pond body；The oblique L-shaped deflector is arranged on upper pool body middle and lower part；In the level
Aerator group is set from position corresponding with the forward position of the flat board to the back-end wall root on dividing plate；In the horizontal baffle
The forward position of the upper correspondence flat board is uniformly arranged the liquid pass hole of multiple upper and lower pond bodies of connection；The aerobic zone is distributed on whole
Aerobic Pond is formed in pond body；The solid-liquid displacement zone is arranged on the flat board top；The anoxic zone is distributed in whole lower pool body
Interior formation anoxic pond；Top is respectively provided with along the square straight tube for connecting lower pool body along concordant and base opening with pond body top in pond body corner,
Correspondence pond body bottom corner location, the impeller under water that installation can be lifted in the square straight tube；Led near the oblique L-shaped
In two opposing sidewalls on square straight tube top of the inclination deflector of stream plate, the mixed-liquor return of regulation flashboard is provided with
Hole；It is located between the opposing sidewalls on front side of the mixed-liquor return hole in described two square straight tube upper ends and is connected across the outstanding of pond body
Empty choked flow wall；The raw water water inlet pipe is arranged on the corresponding back-end wall of lower pool body；The discharge pipeline is arranged on upper pool body bottom
Front end wall on；The outlet pipe is arranged on the corresponding side wall in the solid-liquid displacement zone.
2. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1, it is characterised in that the aerator
Service area≤the 0.5M of each aeration head in group2。
3. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1 and 2, it is characterised in that described solid
Liquid Disengagement zone uses the funneling solid-liquid separator of bar shaped.
4. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1 and 2, it is characterised in that under described
Along its longitudinal centre line, setting is connected between the horizontal baffle and pond body bottom and same space is left at two ends for pond body bottom
Training wall.
5. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1 and 2, it is characterised in that the level
Dividing plate is located at pond body total high 1/3~2/5；The flat board is located at the 1/3~1/2 of upper pool body height；The inclination water conservancy diversion
Angle is 135 °~145 ° between plate and flat board；The flat board forward position has a down dip the gradient for 2~4%.
6. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1 and 2, it is characterised in that described to cross liquid
Hole >=5,1.5 times of all liquid pass hole area summations >=water inlet pipe pore area.
7. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1 and 2, it is characterised in that it is described tiltedly
The planar bottom surface of L-shaped deflector is uniformly arranged some forward flow guide bars parallel to side wall side by side, the forward flow guide bar with
Slab length is identical, its quantity >=5.
8. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1 and 2, it is characterised in that the mixing
The upper edge of liquid return port is less than liquid level higher than liquid level, its lower edge；Flushed along with edge in pond body on the hanging choked flow wall, its lower edge
Less than liquid level.
9. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1 and 2, it is characterised in that the spoil disposal
The T-shaped pipe that Guan Weiyi is made up of the mesh sludge pipe section of closed at both ends and the mud extraction pipeline section extended outside pond of perpendicular connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710200444.3A CN106830329A (en) | 2017-03-30 | 2017-03-30 | Double-decker three-dimensional circular-flow integration oxidation ditch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710200444.3A CN106830329A (en) | 2017-03-30 | 2017-03-30 | Double-decker three-dimensional circular-flow integration oxidation ditch |
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| Publication Number | Publication Date |
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| CN106830329A true CN106830329A (en) | 2017-06-13 |
Family
ID=59141404
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710200444.3A Withdrawn CN106830329A (en) | 2017-03-30 | 2017-03-30 | Double-decker three-dimensional circular-flow integration oxidation ditch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619112A (en) * | 2017-10-27 | 2018-01-23 | 江苏美景时代环保科技有限公司 | A kind of ecological restoration device for black and odorous water |
| CN110182951A (en) * | 2019-05-31 | 2019-08-30 | 凌志环保股份有限公司 | Horizontal integrated A/O oxidation ditch tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0012745B1 (en) * | 1977-11-04 | 1984-09-19 | REID, John, Hager | Oxidation ditch with flow-control apparatus and use thereof in an activated sludge process |
| JP2001334286A (en) * | 2000-05-29 | 2001-12-04 | Hitachi Ltd | Simulation apparatus of oxidation ditch method |
| CN101875511A (en) * | 2010-04-19 | 2010-11-03 | 天津市天水环保设计工程有限公司 | Strip-type funneling solid-liquid separator and gas lifting pulsation push flowing oxidation ditch thereof |
| CN106219874A (en) * | 2016-08-22 | 2016-12-14 | 华仪环保有限公司 | A kind of unpowered return integrated sewage treatment device |
| CN206705784U (en) * | 2017-03-30 | 2017-12-05 | 居文钟 | Double-decker three-dimensional circular-flow integration oxidation ditch |
-
2017
- 2017-03-30 CN CN201710200444.3A patent/CN106830329A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0012745B1 (en) * | 1977-11-04 | 1984-09-19 | REID, John, Hager | Oxidation ditch with flow-control apparatus and use thereof in an activated sludge process |
| JP2001334286A (en) * | 2000-05-29 | 2001-12-04 | Hitachi Ltd | Simulation apparatus of oxidation ditch method |
| CN101875511A (en) * | 2010-04-19 | 2010-11-03 | 天津市天水环保设计工程有限公司 | Strip-type funneling solid-liquid separator and gas lifting pulsation push flowing oxidation ditch thereof |
| CN106219874A (en) * | 2016-08-22 | 2016-12-14 | 华仪环保有限公司 | A kind of unpowered return integrated sewage treatment device |
| CN206705784U (en) * | 2017-03-30 | 2017-12-05 | 居文钟 | Double-decker three-dimensional circular-flow integration oxidation ditch |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619112A (en) * | 2017-10-27 | 2018-01-23 | 江苏美景时代环保科技有限公司 | A kind of ecological restoration device for black and odorous water |
| CN107619112B (en) * | 2017-10-27 | 2024-04-09 | 江苏美景时代环保科技有限公司 | Ecological restoration device for black and odorous water body |
| CN110182951A (en) * | 2019-05-31 | 2019-08-30 | 凌志环保股份有限公司 | Horizontal integrated A/O oxidation ditch tank |
| CN110182951B (en) * | 2019-05-31 | 2024-02-27 | 凌志环保股份有限公司 | Horizontal integrated A/O oxidation ditch tank |
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Application publication date: 20170613 |