CN206705784U - 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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- CN206705784U CN206705784U CN201720322353.2U CN201720322353U CN206705784U CN 206705784 U CN206705784 U CN 206705784U CN 201720322353 U CN201720322353 U CN 201720322353U CN 206705784 U CN206705784 U CN 206705784U
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Abstract
It the utility model is related 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 anoxic zone, aerobic zone, solid-liquid displacement zone, water inlet pipe, outlet pipe and discharge pipeline, an oblique L-shaped deflector being made up of flat board and inclination deflector is connected between both walls；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；Flat board forward position to back-end wall is corresponded on horizontal baffle and sets aerator group, corresponding 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 underwater impeller that the installation of pond body bottom four corners can be lifted is corresponded 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 at corresponding to solid-liquid displacement zone on side wall.
Description
Technical field
It the utility model is related to a kind of dirty, waste water disposal facility, more particularly to a kind of double-decker stereo circulating stream one
Change oxidation ditch.
Background technology
Oxidation ditch is with 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 are mixed and circulated in closing trench passage.Due to its unique " closed cycle flow "
Hydraulic characteristic and longer sludge age 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, also referred to as integrated oxidation ditch jointly, because intensive degree is high, de-
Nitrogen effect is good and is widely used.At present, the oxidation ditch of new generation characterized by stereo circulating stream has walked out laboratory and phase
After appearance, it reduces occupation of land on the basis of earlier generations oxidation ditch, especially integrated oxidation ditch plurality of advantages is inherited, and contribution is more
For 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 running aspect simple to operate, enjoy industry to pay close attention to.
At present, oxidation Ditch Technology still it is abundant excavate and using conventional oxidation ditch hydraulic characteristic on the basis of, towards
Occupation of land and energy-conservation are reduced with further, lifting Nitrogen/Phosphorus Removal is set with new ditch type, new energy-conservation that operating cost is target is reduced
The research and development of standby and simple operation mode etc..
Patent ZL200810053029.0 " the Zanjon type gas-lift stream-pull tridimensional circulation type inversion A reported2O is integrally built jointly
Oxidation ditch " is intended to utilize gas lift motive force caused by aeration process, is realizing the entirety to mixed liquor in oxidation ditch raceway groove
While promotion, by setting horizontal centre dividing plate to make mixed liquor stereo circulating and realizing aerobic and anoxic subregion, reach raising
Nitrogen removal rate, energy-conservation, reduce equipment installed capacity and further reduce the purpose that oxidation ditch takes up an area.The patent of follow-up report
ZL201010150135.8 " follow by the gas lifting pulsation push flowing solid of the funneling solid-liquid separator of bar shaped and the application solid-liquid separator
Epoxidation ditch " is on the basis of above-mentioned patent, has made further improvement.Its structure is identical with above-mentioned formerly patent, in oxidation ditch
Aerobic zone, solid-liquid displacement zone, anoxic zone are provided with ditch body, is 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 are that extension and top are vertical end plate rearwardly and upwardly for the horizontal baffle rear end connection
Deflector is tilted, 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 is simplifying structure, energy-conservation, good effect is achieved in terms of improving effluent quality.It is follow-up again
The patent ZL201210047699.8 " symmetrical opposite three-dimensional circular-flow integration oxidation ditch " of report is in above-mentioned patent base again
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
A kind of oxidation ditch of the 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, hit, shunt again so that the impact resistance enhancing of oxidation ditch, effluent characteristics are more
For stabilization.While being oppositely arranged two symmetrical aeration zones, aerobic zone and anoxic zone in ditch, obtain the entire length of oxidation ditch
To extension, solve the single-groove scale of construction that stereo circulating stream oxidation ditch limits by certain height, length ratio, 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
Denitrification effect and the heavy mud of bottom of pond are caused in area, anoxic zone with pond and to prevent heavy mud from must keep higher rate of circulating flow again
Contradiction does not solve well；(2), because aeration head aeration is unbalanced or tilts the problems such as edge is not horizontal on deflector, 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
Water-flow chart is short, caused denitrification is insufficient soon for rate of circulating flow, and denitrification effect is poor and is difficult to apply；(5) pond body is opening, with
Outside air bump contact, anoxic zone produce emission of bad smell to space, pollute environment.
Utility model content
Main purpose of the present utility model is in view of the above-mentioned problems, flow integrated in existing gas lift plug-flow stereo circulating
The basis of oxidation 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, from
And reaching floor space reduction, denitrification process is abundant, improves denitrification effect, and the mud that sinks is reduced, peculiar smell indiffusion, energy-conservation, and fits
Expanded with scope, be especially more suitable for the effect of small-sized, miniature stereo circulating stream oxidation ditch application.
Technical scheme is used by the utility model solves its technical problem：
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, anoxic zone, aerobic zone, solid-liquid displacement zone, raw water water inlet pipe, outlet pipe and discharge pipeline are provided with the pond body,
Be connected in the pond body, between both walls one be by flat board and thereafter vertical end plate along connected extension rearwardly and upwardly and top
Tilt the oblique L-shaped deflector that deflector is formed；Pond body is separated into independently of each other it is characterized in that being set in the pond body bottom
Upper and lower pond body double-deck pool structure horizontal baffle；The tiltedly 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；It is described it is horizontal every
The forward position that the flat board is corresponded on plate is uniformly arranged the liquid pass hole of multiple upper and lower pond bodies of connection；The aerobic zone is distributed in entirely
Aerobic Pond is formed in upper pool body；The solid-liquid displacement zone is arranged on above the flat board；The anoxic zone is distributed in entirely lower pond
Anoxic pond is formed in vivo；Top is set to connect the square straight of lower pool body along concordant and base opening along with pond body top respectively in pond body corner
Cylinder, corresponding pond body bottom four corners position, the underwater impeller that can be lifted is installed in the square straight tube；Close to the oblique L
In the opposing sidewalls on two square straight tube top of the inclination deflector of shape deflector, the mixed liquor for being provided with regulation flashboard returns
Discharge orifice；It is located in described two square straight tube upper ends between the opposing sidewalls on front side of the mixed-liquor return hole and is connected across pond body
Hanging choked flow wall；The raw water water inlet pipe is arranged on corresponding to lower pool body on back-end wall；The discharge pipeline is arranged on upper pool body bottom
On the front end wall in portion；The outlet pipe is arranged on corresponding to the solid-liquid displacement zone on side wall.
Service area≤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 both 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 as 2~4%.
Liquid pass hole >=5,1.5 times of all liquid pass hole area summations >=water inlet pipe pore area.
Some forward flow guide bars parallel to side wall are uniformly arranged side by side in the planar bottom surface of the tiltedly 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 one by mesh sludge pipe section closed at both ends and the mud extraction extended outside pond of perpendicular connection
The T-shaped pipe that pipeline section is formed.
The beneficial effects of the utility model are：(1) oxidation ditch is separated into by upper and lower two spaces using horizontal baffle, i.e., on
Pond body and lower pool body, the aerobic zone and anoxic zone for making oxidation ditch are completely independent, and efficiently solve existing stereo circulating stream oxidation ditch
Because aerobic zone, the same ditch body in anoxic zone are difficult to reduce anoxic zone dissolved oxygen concentration, cause to improve denitrification effect and the heavy mud of bottom of pond
The contradiction of delay, realization had both ensured that anoxic zone denitrification was abundant, improves nitrogen removal efficiency, and aerobic zone can also keep higher recycle stream
Speed reduces the effect that heavy mud is detained.(2) upper and lower pond body double-decker is used, space can be made full use of, reduces floor space.(3) fit
Answer scope to expand, be especially suitable for miniaturization, the miniaturization of gas lift plug-flow oxidation ditch.Aerobic zone set oblique L-shaped deflector its
Certain slope is integrated with, and some forward flow guide bars parallel to side wall are uniformly arranged side by side in planar bottom surface；Due to plate face
The gradient be present, therefore heavy mud is not produced when suitably turning aeration quantity down and reducing stereo circulating flow velocity yet, so as to reach energy-conservation.This
Outside, by 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
Horizontal error caused by when oblique L-shaped deflector is built and influence and cause to flow up zone flow skewness weighing apparatus problem, lifting
Solid-liquid separation 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, no
Pollute environment.(6) the square straight tube with mixed-liquor return hole of the upper and lower pond body of connection set by pond body and hanging choked flow
Wall, realize aerobic mixed liquor without pump reflux, can strictly control the capacity of returns of aerobic mixed liquor to ensure the anoxic of anoxic zone
Environment, simple to operate while denitrification effect is lifted, energy-conservation.(7) eliminated using the funneling solid-liquid separator of bar shaped
Bulking sludge On The Floating, ensure that effluent quality is good, in addition to (8) using underwater impeller except anoxic zone, other plug-flows and nitrification
Power needed for liquid backflow etc. provides by aerating system, saves equipment investment and energy resource consumption, whole oxidation ditch, construction cost
Low, construction speed is fast.
Brief description of the drawings
Fig. 1 is top view of the present utility model；
Fig. 2 is Fig. 1 A-A cross section views；
Fig. 3 is horizontal baffle position of the present utility model top view；
Fig. 4 is lower pool body top view of the present utility model；
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 zones, 32 solid-liquid displacement zones, 33 anoxic zones, 311 gas lift plug-flow sections, 312 forward levels
Flow section, 313 sinking sections, water-filling advection section after 314,4 solid-liquid separators, 41 solid-liquid separator end plates, 411 water inlets, 42
Solid-liquid separator front end-plate, 421 receive mill weir delivery port, and 43 water legs, 431 cross chute delivery port, 44 bar shaped funnel groups, 45 bar shapeds
Funnel, 451 stripe boards, 46 discharge outlet, 47 receipts mill weirs, 48 mistake chutes, 5 outlet pipes, 6 square straight tubes, 61 mixed-liquor return holes, 7
Oblique L-shaped deflector, 71 flat boards, 72 tilt deflectors, 73 vertical end edges, 8 forward flow guide bars, 9 horizontal baffles, 91 liquid pass holes, and 10
Discharge pipeline, 101 mesh sludge pipe sections, 102 mud extraction pipeline sections, 14 underwater impellers, 15 training walls, 16 aerator groups, 17 raw waters are entered
Water pipe, 18 regulation flashboards.
The utility model is described in detail below in conjunction with drawings and examples.
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, one is connected in the pond body, between both walls 12 by flat board 71 and thereafter along solid
The oblique L-shaped deflector that extension rearwardly and upwardly and top even is formed for the inclination deflector 72 of vertical end plate 73；The utility model
It is characterised by setting the double-deck pool structure that pond body is separated into separate upper and lower pond body 1a, 1b in the bottom of pond body 1
Horizontal baffle 9；Some forward water conservancy diversion parallel to side wall are uniformly arranged side by side in the bottom surface of flat board 71 of oblique L-shaped deflector 7
Bar 8, the forward flow guide bar 8 is identical with the length of flat board 71, its quantity >=5.It is by forward flow guide bar that stereo circulating stream is equal
Even shunting, it is ensured that aerobic zone stereo circulating stream fluidised form is balanced steady, horizontal caused by solving when oblique L-shaped deflector is built to miss
Difference and influences and causes to flow up zone flow skewness weighing apparatus problem, lifting solid-liquid separation effect.
In actually building, horizontal baffle 9 be located at pond body always at 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 tilt angle between deflector 72 and flat board 71；The forward position of flat board 71 has a down dip the gradient
For 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 as 3%；And it is provided with the bottom surface of flat board 71
6 forward flow guide bar 8.
Set on the horizontal baffle 9 from position corresponding with the forward position of the flat board 71 to the root of the back-end wall 12
Put aerator group 16.Service area≤0.5M of each aeration head in aerator group 162.The setting requirements of aerator group 16 reach
Aerating gas is covered by oblique L-shaped deflector substantially, circulation is flowed to gas lift plug-flow section concentration, keeps head to have certain height
Discharge kinetic energy.Meanwhile recycle stream sinking section 313 is avoided the influence of aerator gas raising speed, reduce water resistance.
The forward position that the flat board 71 is corresponded on the horizontal baffle 9 is uniformly arranged multiple upper and lower pond bodies 1a, 1b of connection
Liquid pass hole 91.In actually building, liquid pass hole >=5, the pore of 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 be 10mm, the aperture of water inlet pipe 17 for for
25mm, 1.5 times of the pore area of area summation >=water inlet pipe 17 of liquid pass hole.
The aerobic zone 31, which is distributed in whole upper pool body 1a, forms Aerobic Pond；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 flowing 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
Water-filling advection section 314 afterwards.The anoxic zone 33, which is distributed in whole lower pool body 1b, forms anoxic pond.
In the utility model, the solid-liquid displacement zone 32 employs patent ZL201010150135.8, and " bar shaped is funneling solid
Bar shaped funneling solid-liquid point in the gas lifting pulsation push flowing tridimensional circulating oxidation ditch of liquid/gas separator and the application solid-liquid separator "
From device.As shown in fig. 7, it is by multiple bar shaped funnels connected side by side that its heavy mud of the funneling solid-liquid separator 4 of bar shaped, which replaces component,
The bar shaped funnel group 44 that the forward and backward end plate 42,41 of separator is formed is perpendicularly fixed at, bar shaped funnel is the bottom of with by two stripe boards 451
While possessing interval and symmetrical outward-dipping setting and stripe board both ends close on forward and backward end plate 42,41 and formed respectively.This example
In, cross receipts 47, the 6 bar shaped funnels 45 connected side by side of mill weir of chute 48,6 there is provided 5 bar shapeds in solid-liquid separator 4, 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, ensures that effluent quality is good.
In pond body, 1 four jiaos set top along the square straight tube 6 for connecting lower pool body 1b along concordant and base opening with pond body top respectively, right
Pond body bottom four corners position is answered, the underwater impeller 14 that installation can be lifted 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 underwater impellers is in opposite direction.During work, lacking
In oxygen area, two groups of underwater alternations of impeller 14, liquid stream is flowed along forward and reverse commutation, reach to be sufficiently stirred and do not sunk with turning
The effect of mud.
In the opposing sidewalls close to the two square top of straight tube 6 for tilting deflector end of the tiltedly 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 connected across the hanging of pond body between the opposing sidewalls of the front side of mixed-liquor return hole 61
Choked flow wall 2, the upper edge of hanging choked flow wall 2 flush with edge in pond body, and lower edge is less than liquid level.Its effect is, by setting hanging resistance
Wall is flowed, the mixed liquor of gas lift plug-flow can partly be stopped, and enters anoxic zone 33 by two mixed-liquor return holes 61, it is real
Show aerobic zone mixed liquor to purpose of the anoxic zone without pump reflux.Regulation flashboard 18 can adjust backflow water yield as needed.
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 both ends leave the training wall 15 of same space.
The raw water water inlet pipe 17 is arranged on corresponding to lower pool body 1b on back-end wall 11.
The discharge pipeline 10 is arranged on the front end wall 13 of upper pool body 1a bottoms；Discharge pipeline 10 is one by net closed at both ends
The T-shaped pipe that hole sludge pipe section 101 and the mud extraction pipeline section 102 extended outside pond of perpendicular connection are formed.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 corresponding to solid-liquid displacement zone 32 on side wall 12.
The course of work and principle of the present utility model are as follows:
In the present embodiment, oxidation ditch floor space 55.26m2, basin's effective volume 250m3, high 4.5m, long 9m, wide 6.17m, place
It is 12.5m to manage raw water (sewage) amount3/ 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 the utility model lower pool body 1b flow-shape figures.In figure：Hollow arrow represents that raw water enters oxidation
Ditch path, filled arrows represent mixed liquor flow direction.Raw water flows into oxidation ditch lower pool body by water inlet pipe 17, under water plug-flow
Mixed in the presence of device 14 with the mixed liquor in oxidation ditch lower pool body, and under the promotion of the underwater impeller mixed liquor in Xia Chi
Horizontally rotate in vivo.Lower pool body set four underwater impellers, diagonally on two into one group, one group be normally opened group,
One group is normally closed group, and normally opened group is only opened in day-to-day operation, ensures that mixed liquor can flow toward the direction.In this mistake
Cheng Zhong, the denitrifying bacteria in mixed liquor carry out the total nitrogen that denitrification is gone in water removal under anaerobic environment.When one section of operation
After time, generally 6-10 hours (time length determines according to operating mode), normally opened group is closed；Then, normally closed group is opened, general fortune
Row 1-2 hours, mixed liquor is reversely promoted, prevent the deposition of activated sludge, disturbance from still opening normally opened group of underwater plug-flow after terminating
Device carries out day-to-day operation.
Fig. 6 shows the utility model upper pool body 1a flow-shape figures.Filled arrows are mixed liquor flow direction in figure, hollow
Arrow is nitrification liquid backflow direction.After lower pool body mixed liquor is full of lower pool body space, exposed by static pressure and by liquid pass hole 91
Enter oxidation ditch upper pool body under the gas lift effect that gas device group 16 provides.Lower pool body 1b mixed liquors enter upper pool body after with upper storage reservoir
Body mixed liquor is thoroughly mixed in the presence of aeration agitation, and as current are good into gas lift under the power that gas lift current provide
Oxygen area 311, rising mixed liquor on rear side of upper pool body can part inflow mixed-liquor return hole 61 and be used as nitre by square straight tube 6
Change liquid and be back to anoxic zone 33, provide nitrogen source for nitration reaction, the size in mixed-liquor return hole 61 can be by adjusting flashboard 18
So as to control the capacity of returns of nitrification liquid, mixed liquor rises to the vertical end for tilting deflector along 73 most along deflector 72 is tilted for regulation
Kinetic energy is fully converted to gravitional force during high water level, and dramatic decrease enters aerobic zone 31 above inclination training wall of jumping over, in local area
In domain aerobic activated sludge effect under, mainly go divided by COD, BOD be mark carbon source it is contaminants associated and nitrifier make
Ammonia Nitrification is converted into cultured water with lower, nitrification liquid is formed under the premise of degradation of ammonia nitrogen concentration, bar is created for denitrification denitrogenation
Part.After completing hydraulic retention and aerobic biochemical reaction under the action of turbulent flow of aerobic zone, part mixed liquor enters and is located at separation of solid and liquid
The solid-liquid separator 4 in area 32.In solid-liquid separator, supernatant flows out oxidation ditch, precipitation as the water outlet after processing through outlet pipe 5
The excess sludge to get off, returns to aerobic zone 31 under the drive of solid-liquid separator bottom turbulent flow, and new mixed liquor enters solid-liquid again
Disengagement zone forms continuous water outlet current.Mixed liquor, which flows through to turn back down after oblique L-shaped deflector, to be advanced into below flat board, dynamic in aeration
Oxygenation is stirred under power and enters back into gas lift aerobic zone 311, so go round and begin again circulation.After running a period of time, excessive dirt
Mud, which can pass through outside discharge pipeline 10, to be arranged, so as to control sludge age and reduce the content of phosphorus in mixed liquor.
The utility model takes double-decker to design, and the anoxic zone with denitrification is arranged at into pond under oxidation ditch
Body, i.e. anoxic pond.If aoxidized using the gas lifting pulsation push flowing stereo circulating of the funneling solid-liquid separator of aforementioned applications bar shaped
Ditch, to obtain enough anaerobic environments to meet denitrification, it is necessary to increase oxidation ditch anoxic zone ditch body volume
15%.Therefore on the premise of identical disposal ability, treatment effect, the utility model can reduce oxidation ditch pool compared with prior art
The 15% of body volume, and then save floor occupying area.
The utility model also achieve anoxic zone with aerobic zone strictly disjointing under continuous condition of work so that oxidation ditch
Interior oxygen gradient significant change, the more obvious denitrification for being advantageous to denitrifying bacteria of anaerobic environment are more preferable so as to obtain
Denitrification effect.
The utility model only needs the flow of regulation regulation flashboard 18 can control backflow nitrification liquid, has been truly realized without pump
Backflow and the purpose by simple operations can control nitrification liquid capacity of returns.
The anoxic zone for being also easy to produce peculiar smell is arranged on lower pool body by the utility model, so as to reduce foul gas to surrounding environment
Influence.
Inside the utility model in addition to power needed for the underwater impeller plug-flow of lower pool body, its aerobic zone plug-flow, nitrification liquid return
Power provides by aerating system needed for stream, so as to save the input of equipment and the consumption of the energy to greatest extent.
In addition to solid-liquid separator is using material-structures such as steel, plastics, remaining can be used component inside the utility model
Concrete 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 skill
Fluctuation of the art to water quality, water in itself just has good adaptability, so the utility model can be used as scale water factory
Main process choice, can also be as the handling process of Miniature Sewage Farm.
Application effect of the present utility model
In the present embodiment, oxidation ditch floor space 55.26m2, processing 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 are more than 90% and (used《GB11914-89COD measure
Dichromate titration》Measure)；Ammonia nitrogen 3.5-5mg/L, clearance (use GB7479-87 more than 90%《The measure Na Shi of water quality ammonium
Reagent colorimetric method》Measure)；Total nitrogen 6-10mg/L, total removal rate are more than 85% and (used《The measure of GB11894-89 water quality total nitrogens
Alkaline chitinase clears up ultraviolet spectrophotometry》Measure), total phosphorus 0.4-1.0mg/L, clearance is more than 80% and (used
《The measure ammonium molybdate spectrophotometric method of GB11983-89 water quality total phosphorus》Measure)；Go out aqueous suspension (to use less than 10mg/L
《The measure gravimetric method of GB11901-89 water quality suspensions》Measure).
Comparative example：It is 12.5m to handle raw water (sewage) amount3/ 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 are more than 90% and (used《GB11914-89COD measure
Dichromate titration》Measure)；Ammonia nitrogen 3.5-5mg/L, clearance (use GB7479-87 more than 90%《The measure Na Shi of water quality ammonium
Reagent colorimetric method》Measure)；Total nitrogen 8-14mg/L, total removal rate are more than 70% and (used《The measure of GB11894-89 water quality total nitrogens
Alkaline chitinase clears up ultraviolet spectrophotometry》Measure)；Total phosphorus 0.6-1.4mg/L, clearance are more than 70% and (used
《The measure ammonium molybdate spectrophotometric method of GB11983-89 water quality total phosphorus》Measure)；Go out aqueous suspension (to use less than 10mg/L
《The measure gravimetric method of GB11901-89 water quality suspensions》Measure).
Bar is used than existing using the utility model, the dirty, nitrogen removal rate of waste water it can be seen from above-mentioned comparing result
The nitrogen removal rate of the gas lifting pulsation push flowing tridimensional circulating oxidation ditch of the funneling solid-liquid separator of shape can improve more than 10%, account for
Ground area reduces 13.6%.
It is described above, only it is preferred embodiment of the present utility model, not to structure of the present utility model and shape
Make any formal limitation, it is every any simply to be repaiied according to what the technical essence of the utility model was made to above example
Change, equivalent variations and modification, in the range of still falling within technical solutions of the utility model.
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, anoxic zone, aerobic zone, solid-liquid displacement zone, raw water water inlet pipe, outlet pipe and discharge pipeline are provided with the pond body, in institute
State in pond body, one is connected between both walls by flat board and thereafter along connected extension rearwardly and upwardly and top inclining for vertical end plate
The oblique L-shaped deflector that oblique deflector is formed；It is characterized in that set in the pond body bottom pond body is separated into it is separate
The horizontal baffle of the double-deck pool structure of upper and lower pond body；The tiltedly 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 above the flat board；The anoxic zone is distributed in whole lower pool body
Interior formation anoxic pond；Top edge is set to connect the square straight tube of lower pool body along concordant and base opening with pond body top respectively in pond body corner,
Corresponding pond body bottom four corners position, the underwater impeller that can be lifted is installed in the square straight tube；Led close to the tiltedly L-shaped
In the opposing sidewalls on two square straight tube top of the inclination deflector of flowing plate, the mixed-liquor return of regulation flashboard is provided with
Hole；It is located in described two square straight tube upper ends between the opposing sidewalls on front side of the mixed-liquor return hole and is connected across the outstanding of pond body
Empty choked flow wall；The raw water water inlet pipe is arranged on corresponding to lower pool body on back-end wall；The discharge pipeline is arranged on upper pool body bottom
Front end wall on；The outlet pipe is arranged on corresponding to the solid-liquid displacement zone on side wall.
2. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1, it is characterised in that the aerator
The 5m of the service area of each aeration head in group≤0.2。
3. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1 or 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 or 2, it is characterised in that under described
Pond body bottom is along its longitudinal centre line, and setting is connected between the horizontal baffle and pond body bottom and same space is left at both ends
Training wall.
5. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1 or 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 as 2~4%.
6. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1 or 2, it is characterised in that the mistake
Fluid apertures >=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 or 2, it is characterised in that described oblique
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 or 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 on the hanging choked flow wall along with edge in pond body, its lower edge
Less than liquid level.
9. double-decker three-dimensional circular-flow integration oxidation ditch according to claim 1 or 2, it is characterised in that the spoil disposal
The T-shaped pipe that Guan Weiyi is made up of the mud extraction pipeline section extended outside pond of mesh sludge pipe section closed at both ends and perpendicular connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720322353.2U CN206705784U (en) | 2017-03-30 | 2017-03-30 | Double-decker three-dimensional circular-flow integration oxidation ditch |
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|---|---|---|---|
| CN201720322353.2U CN206705784U (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 |
|---|---|---|---|---|
| CN106830329A (en) * | 2017-03-30 | 2017-06-13 | 居文钟 | Double-decker three-dimensional circular-flow integration oxidation ditch |
| CN111777178A (en) * | 2020-05-26 | 2020-10-16 | 河南国威市政工程有限公司 | Vertical oxidation ditch micro-power water treatment system |
-
2017
- 2017-03-30 CN CN201720322353.2U patent/CN206705784U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830329A (en) * | 2017-03-30 | 2017-06-13 | 居文钟 | Double-decker three-dimensional circular-flow integration oxidation ditch |
| CN111777178A (en) * | 2020-05-26 | 2020-10-16 | 河南国威市政工程有限公司 | Vertical oxidation ditch micro-power water treatment system |
| CN111777178B (en) * | 2020-05-26 | 2022-07-05 | 河南国威市政工程有限公司 | Vertical oxidation ditch micro-power water treatment system |
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Effective date of registration: 20190219 Address after: 300110 Tianjin Nankai District Yellow River Road 519 17-104 Patentee after: Qingchi Water Environment Management Technology Development (Tianjin) Co., Ltd. Address before: 300071 Southwest Village, Nankai University, Nankai District, Tianjin 36-1-103 Patentee before: Ju Wenzhong |
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