CN106976965A - It is a kind of to include the oxidation ditch sewage treatment and device of the broken scattered processing of eddy flow - Google Patents
It is a kind of to include the oxidation ditch sewage treatment and device of the broken scattered processing of eddy flow Download PDFInfo
- Publication number
- CN106976965A CN106976965A CN201710367659.4A CN201710367659A CN106976965A CN 106976965 A CN106976965 A CN 106976965A CN 201710367659 A CN201710367659 A CN 201710367659A CN 106976965 A CN106976965 A CN 106976965A
- Authority
- CN
- China
- Prior art keywords
- sludge
- eddy flow
- broken
- oxidation ditch
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1257—Oxidation ditches
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention relates to a kind of including the broken oxidation ditch sewage treatment for dissipating processing of eddy flow, methods described is included in setting pot, sewage is handled in oxidation ditch and second pond, and by least a portion sludge reflux in second pond to oxidation ditch water inlet, the sludge that water inlet is wherein back to second pond by the broken scattered device group of eddy flow carries out the broken scattered processing of eddy flow, utilize the velocity gradient field strength activated sludge periphery hydraulic shear effect in eddy flow field, ensure the high activity on zoogloea surface, remove the netted impurity for being coated on the difficult degradation of flco surface and combine the high flco interface of water extraction to the mass transfer efficiency of central active region；Promote oxidation ditch bottom sludge to flow simultaneously, made aeration zone sludge suspension in water body, it is to avoid sludgd deposition, increase sludge utilization rate；The aging sludge floated in biochemical process by the gentle bubble of enrichment grease is crushed by eddy flow, optimizes effluent quality, prevents sludge bulking, improve settling property.The invention further relates to a kind of device for realizing the above method.
Description
Technical field
The invention belongs to sewage treatment process transformation field, it is related at a kind of oxidation ditch sewage including the broken scattered processing of eddy flow
Method and device is managed, specifically, the broken scattered device of eddy flow is set up on oxidation ditch system sludge reflux pipeline, by the rotational-flow shearing field of force
With centrifugal force field reinforced anaerobic/anoxic/aerobic microbiological purification efficiency, and the device of this method is realized.
Background technology
Oxidation ditch is a kind of active sludge processing system, and traditional activated sludge process is different from hydraulic flow state, and it exposes
Gas pond is in the irrigation canals and ditches type of closing, and the whole process of sewage disposal is such as intake, is aerated, precipitating and water outlet is all concentrated in oxidation ditch
Complete, in a short time in plug-flow state, and also have preferable place to not degradable organic matter in admixture interior for a long time
Reason ability.Oxidation ditch process turns into the preferred technique of small and medium cities sewage plant with the outstanding advantage of its economical and convenient.
Now with the quickening of Urbanization Construction process, industry and sanitary sewage composition are more complicated, include organic contamination
Thing, oil pollutant, biological pollutant and noxious material etc. so that traditional oxidation ditch process faces larger in the process of running
Problem.First problem is that microbial load is too high when the carbohydrate in waste water is too high, and repertory plays a large amount of high viscosities
Polysaccharose substance, a large amount of water loadings are in Sludge Surface, and sludge volume index (Sludge Volume Index, SVI) value is very high,
Cause sludge bulking and thread bacteria growing.Second problem is that amount of grease or micro-bubble are handled and be enriched with completely without system
In Sludge Surface or hole, circulation, through turning brush oxygenation stirring, produces a large amount of foams in oxidation ditch, cause sludge lighten and on
It is floating.And small nitrogen bubble can be discharged during denitrifying bacterium alienation nitrate, sludge takes bubble rising, if discharging not in time, for a long time
Circulation can cause sludge settling property to decline in oxidation ditch, finally influence effluent quality.3rd problem is oxidation ditch process master
Will be using water jet propulsion effect, its velocity of circulation is main to be determined by water inlet water velocity, backflow flow velocity rate, aeration quantity, water flow velocity
(mean flow rate not deposited should reach 0.3~0.5m/s) is too low can cause a large amount of depositions of bottom of trench for degree, greatly reduces oxygen
Change the dischargeable capacity of ditch, reduce the mixed effect of microorganism, oxygen and microorganism, have impact on effluent quality, and pass through reinforcing
Aeration intensity certainly will cause the energy consumption of air aeration to waste to strengthen mixing and shear effect in pond, but also can produce a large amount of bubbles
Foam.Therefore need to find effective and cost effective method to improve effluent quality.Chinese utility model patent 200620039472.9
A kind of device for being used to eliminate oxidation ditch activated sludge generation expansion and foam is disclosed, by setting guide rail and filler grid to prevent
Der Pilz suspension growth, can alleviate sludge bulking and bubble-related issues, it is necessary to periodic cleaning and replacing.Chinese invention patent application
201510211294.7 disclose the oxidation ditch that a kind of machinery eliminates foam, and bearing is installed on oxidation ditch A and oxidation ditch B side walls
Seat includes rotary shaft, and the periphery of rotary shaft is provided with some brokenly bubble rods, to realize the purpose for eliminating foam.Chinese invention patent
Application 201510152913.X discloses a kind of AAO oxidation ditches real-time monitoring system and its sewage water treatment method, by oxidation
Impeller and a table flotation cartridge type impeller promote current in ditch under water for setting one in first straight way of ditch, optimize flow rate of water flow,
To solve the problems, such as sludgd deposition, denitrogenation dephosphorizing efficiency is improved.Chinese invention patent application 201310511102.5 proposes a kind of rotation
The oxidation ditch system of stream aeration and plug-flow nozzle Synergistic, its method for using rotational-flow shearing to be aerated improves oxygen supply effect to carry
High oxidation ditch treatment efficiency, does not solve amount of grease or bubble handles and is enriched in Sludge Surface or hole completely without system
Mud up-floating and expansion issues caused by gap.To sum up, above patent proposes to understand just for some problems of oxidation ditch process
Certainly scheme, and progress carries the problems such as mark transformation is still faced with high high energy consumption, cost and transformation complexity on existing oxidation ditch system.
Present inventor considered that the broken particularity for dissipating eddy flow field in device of eddy flow, utilizes the even hundred times of force of gravity big tens
Centrifugal force removes light gas；Using the shearing effect on hydraulic shear flow field reinforcement sludge flco periphery, protect small flocculation structure
High activity is held, and removes the mass transfer for being coated on flco surface difficult degradation colloidal substance raising organic pollution to flco active region
Performance；Being sufficiently mixed fluid using the tubulence energy in eddy flow field simultaneously improves system water-power environment, makes aeration zone sludge suspension, carries
High sludge utilization rate, intensified denitrification and dephosphorization efficiency.Therefore, the present inventor creatively proposes the coupling on traditional oxidation ditch process
Medicament need not be added by closing in eddy flow technique, running, have the advantages that operating cost is low, energy consumption is low, non-secondary pollution.Should
Modernization system is simple, easy to maintenance, small investment, and the mark that carries suitable for existing urban wastewater treatment firm by main process of oxidation ditch changes
Make, can reach that urban wastewater treatment firm proposes the requirement of mark transformation, water outlet after processing is reached that the discharge standard of country is required.
The content of the invention
The present invention provides a kind of including the broken oxidation ditch sewage treatment and device for dissipating processing of eddy flow, in oxidation ditch sewage
Eddy flow is introduced on handling process sludge reflux pipeline and breaks day labor skill, to strengthen wastewater treatment efficiency, reduce sludge bulking and raising
Sludge settling property.The modified technique apparatus structure is simple, energy consumption is low and cost is low, with environment benefits and economic gains.
In order to solve technical problem of the prior art, the present invention provides following technical scheme：
In one aspect, the present invention provides a kind of including the broken oxidation ditch sewage treatment for dissipating processing of eddy flow, the side
Method is included in containing handling sewage in oxidation ditch, setting pot and second pond, and the sludge that second pond is back into water inlet leads to
The broken scattered device of eddy flow is crossed, the broken scattered processing of eddy flow is carried out, the gas isolated is escaped into air, the broken scattered device group of the eddy flow is included extremely
Few broken scattered device of an eddy flow.
In a kind of embodiment of first aspect, the broken scattered processing of the eddy flow is configured to (1) using the speed in eddy flow field
Spend gradient fields reinforcing activated sludge periphery hydraulic shear effect, it is ensured that the high activity on zoogloea surface, removal is coated on flco table
The netted impurity of face difficult degradation and the mass transfer efficiency with reference to the high flco interface of water extraction to central active region；Or (2) are rapid using eddy flow
Action is used for improving system current flow rate, promotes being sufficiently mixed for oxygen, water pollutant and microorganism, aerobic to strengthen
The nitration reaction of process；Or (3) have promoted oxidation ditch bottom sludge to flow, and make aeration zone sludge suspension in water body, it is to avoid dirty
Mud is deposited, and increases sludge utilization rate；Or (4) crush the aging floated in biochemical process by the gentle bubble of enrichment grease by eddy flow
Gas in sludge, eddy flow removing sludge, optimizes effluent quality, prevents sludge bulking, improve settling property；Or (1)-(4)
In any combination.
In the another embodiment of first aspect, all methods are applied to all oxidations containing sludge recirculation system
Ditch technique, the oxidation ditch may include Carrousel oxidation ditches or Orbal oxidation ditches.
In the another embodiment of first aspect, the broken scattered device of the eddy flow includes inducer, shell of column, cone section, underflow
Straight section and overflow segment, wherein import, underflow opening pressure are reduced to 0.05-0.5MPa, and inlet flow rate is 1-10m/s.
In the another embodiment of first aspect, the shearing effect inside the broken scattered device of the eddy flow comes from fluid certainly
Body flows the velocity gradient and barometric gradient to be formed, and shear rate G is more than or equal to 1000s-1, under hydraulic shear effect,
The difficult degradation colloidal type material accumulated for a long time on flco surface is able to grinding and removed, and forms consolidation, higher active particle
Sludge, is conducive to sludge settling.
In the another embodiment of first aspect, in the broken scattered processing of eddy flow, under eddy flow turbulence effect, promote
System mixed liquor flows, and prevents sludgd deposition, instead of enhanced aeration intensity by way of strengthening flowing in pond, to reduce
Energy consumption.
In the another embodiment of first aspect, in the broken scattered processing of eddy flow, under high shear forces, flco can divide
The small flocculation structure of high activity is dissipated into, so that the active area that aerobic bacteria adsorbs organic pollution is added, and in biochemical reaction
Later stage small flco is agglomerated into the Floe structure of high activity by electrostatic interaction, macromolecule winding and the effect of ion bridge joint again.
In the another embodiment of first aspect, the substantial amounts of nutriment of microorganism adsorption and repertory rise a large amount of high
The polysaccharose substance of viscosity so that large quantity of moisture is adsorbed in Sludge Surface and causes sludge bulking, in the broken scattered processing of eddy flow, profit
Removed with centrifugal force and shearing effect in the broken scattered device of eddy flow and combined water, reduced because Water Molecular Adsorption is in caused by Sludge Surface
Sludge bulking, strengthens sludge itself proportion, prevents der Pilz amount reproduction.
In the another embodiment of first aspect, in the broken scattered processing of eddy flow, made by rotational-flow shearing power and centrifugation
The oil and bubble on inside sludge and surface are adsorbed in removing, the increase of sludge proportion alleviates digestion floating degree.
In second aspect, the present invention provides a kind of device for being used to implement method as described in relation to the first aspect, described device
It may include the setting pot for sewage disinfection treatment, oxidation ditch reaction tank, the Yi Jiyong for denitrogenation dephosphorizing connected by pipeline
Scattered device is broken in carrying out the broken eddy flow for dissipating processing of eddy flow.
In a kind of embodiment of second aspect, the optional scope of the broken scattered device inlet flow rate of eddy flow is 10-100m3/ h, root
Factually sludge reflux amount in border determines the nominal diameter of the broken scattered device single tube of eddy flow, or passes through the side of the broken scattered device single tube of many eddy flows in parallel
Formula solves big flow sludge reflux liquid processing operating mode.
In the another embodiment of second aspect, the broken scattered device of the eddy flow may include inducer, shell of column, cone section, bottom
Straight section and overflow segment are flowed, and the broken scattered device of the eddy flow, using single import or many imports, cone section cone angle is 4 ° -20 °.
In the another embodiment of second aspect, the broken scattered device import of the eddy flow can use tangential inlet, enter the degree of lip-rounding
Shape is using circular or square.
In the another embodiment of second aspect, the degassing efficiency of the broken scattered device of the eddy flow can be more than 95%.
Compared with prior art, the beneficial effects of the present invention are (1) present invention in oxidation ditch process sludge reflux pipeline
On set up the broken scattered device of eddy flow, utilize rotational-flow shearing flow field and centrifugation turbulence flow field to remove the long-term difficulty for being coated on sludge flco surface
Degraded colloidal substance and oil film, sludge activity is improved under hydraulic shear effect；Add connecing for oxygen, pollutant and microorganism
Contacting surface is accumulated and probability, is improved current flow rate, is prevented it from depositing, improve sewage treating efficiency, has saved and passed through
The a large amount of energy consumptions for increasing aeration quantity to improve hydraulics and produce.The broken scattered utensil of eddy flow has low energy consumption, non-secondary pollution, structure
Simply, the characteristics of easily changing and do not influence system stable operation, suitable for existing urban wastewater treatment firm using oxidation ditch as main body work
The mark that carries of skill is transformed, and can reach that urban wastewater treatment firm proposes the requirement of mark transformation, water outlet after processing is reached national discharge mark
Alignment request.
(2) present invention controls sludge also using the micro-bubble in the centrifugal force field removing returned sludge of the broken scattered device of eddy flow
Float and prevent sludge bulking, improve sludge settling property, optimize effluent quality.
Brief description of the drawings：
Carried out as described in detail below according to reference to accompanying drawing, the purpose of the present invention and feature will be apparent, accompanying drawing
In：
Fig. 1 is to couple oxidation ditch process to strengthen at waste water according to a kind of eddy flow technique of an embodiment of the invention
Manage the process chart of efficiency.
Fig. 2, which is that eddy flow is broken according to an embodiment of the invention, dissipates device single tube structure schematic diagram.
Embodiment
Present inventor has found by extensive after in-depth study, although oxidation ditch has effluent quality
Good, capacity of resisting impact load is strong, the advantages of be easy to Automated condtrol, but in actual running, still suffers from a series of
The problem of.When the carbohydrate in waste water is more, and N, P content are uneven, bacterium has drawn a large number of nutrients, metabolism speed
Degree is slower, and repertory plays the polysaccharose substance of a large amount of high viscosities, greatly increases the surface attachment water of activated sludge, SVI values are very high,
Form sludge bulking and produce a large amount of der Pilzs.In sewage disposal process, amount of grease is enriched in sludge, through turning brush oxygenation
Stirring, produces frothing.In addition, denitrification work easily occurs in the case of anaerobic environment and high nitrate concentration for denitrifying bacterium
With producing substantial amounts of nitrogen makes Mud up-floating, influence sludge settling property and effluent quality.Furthermore, oxidation ditch inner fluid speed
It is uneven to easily cause a large amount of sludgd depositions in bottom, influence sludge utilization rate.The present invention is proposed by the broken scattered device of eddy flow
Special flow field removes the difficult degradation colloidal substance and oily substance for being coated on activated sludge surface, removing nitrogen etc., promotes mixing
Liquid flows, the mass-transfer efficiency of enhancing flco and pollutant, so as to prevent Mud up-floating, increase sludge settling property, prevent sludge
Deposition, improves sewage disposal efficiency.Found based on more than, the present invention is accomplished.
In the first aspect of the invention, there is provided a kind of eddy flow technique coupling oxidation ditch sewage treatment technology is useless to strengthen
Water process potency method, is concretely comprised the following steps:
Increase the broken scattered device of eddy flow, its underflow opening pipeline on the sludge reflux pipeline of existing sewage treatment plant's oxidation ditch process
Connection oxidation ditch inducer and sewage together flow into aeration tank and carry out contaminant degradation, overflow segment outlet be placed in the oxidation ditch water surface it
On, in favor of gas overflowing.In the broken scattered device of eddy flow, returned sludge periphery is imitated by hydraulic shear caused by velocity gradient
Should, the netted impurity and combination water that are coated on the difficult degradation of flco surface is effectively removed, expose enzyme active sites, make bacterium
Micelle surface maintains high activity, while improving mass transfer efficiency of the nutriment from flco interface to central active region；
Flow of fluid flows for strong turbulence in the broken scattered device of eddy flow, oxygen, pollutant and microorganism is fully contacted and is mixed,
System current flow rate is improved, the nitrification efficiency of aerobic process is enhanced；
Current flow at high speed has promoted bottom sludge to flow simultaneously, aeration zone sludge is in suspended state, prevents sludge
Deposition, enhances sewage treating efficiency, has saved by increasing aeration quantity to improve the increased energy consumption of pool inner water power condition institute；
In the Adsorption of Organic stage, amount of grease can not completely be absorbed by the micro-organisms and be enriched in Sludge Surface and hole
Road, through turning brush oxygenation stirring, produces a large amount of foams, while the nitrogen that denitrification is produced is held under the arm and is wrapped in sludge, influences sludge
Sedimentation, can make to depend on the oil film on flco surface, bubble and combine water by the sludge flco that it is gentle that hydraulic cyclone crushes rich oil
It is disengaged in water body, then the eddy flow light gas of centrifugation removing and oil improve sludge itself proportion, improve sludge to purify sludge
Settling property.
The broken scattered effect of eddy flow mainly uses the broken scattered sludge of shear action, is on the one hand conducive to flco Surface Renewal, another
Aspect is conducive to the gas in flco to escape, and makes sludge settling in reaction tank bottom, keeps the superperformance of sludge, and add
The centrifugal action of cyclone is more beneficial for gas effusion.Overfall to the pipe of water inlet is hanging, has a large amount of gases to come out
And liquid also is cracked with part, but gas is not returned in water and is to revert in air, and underflow opening is then returned in water inlet.Can
The liquid that cracks flowed out from overfall is back to oxidation ditch.
In the present invention, above-mentioned steps are suitable for all oxidation ditch process containing sludge recirculation system, including Carrousel
Oxidation ditch, Orbal oxidation ditches etc..
In the present invention, the broken scattered device import and export pressure differential 0.05MPa-0.5MPa of eddy flow, it is therefore preferable to 0.05-0.1MPa,
Inlet flow rate is controlled in 1-10m/s, preferably 1-7m/s, to create suitable hydraulic shear environment and flox condition, is conducive to
The formation of mud granule and high activity sludge flocculation structure, and polysaccharide, the protein dropped to by shear action in water body
Nitric efficiency can be improved Deng internal carbon source as electron donor needed for denitrification.
In the present invention, the broken scattered device of eddy flow produces hydraulic shear effect by fluid displacement, and shear rate G is up to
1000s-1More than, under hydraulic shear effect, the colloid hard-degraded substance accumulated for a long time on flco surface is able to grinding and removed, easily
Consolidation, high activity granule sludge is formed, sludge settling property is improved.
In the present invention, promote mixed liquor to flow by eddy flow turbulence effect, prevent sludgd deposition, instead of by reinforcing
Aeration intensity reduces energy consumption in the way of strengthening flowing in pond.
In the present invention, under high shear forces, flco can be dispersed into the small flocculation structure of high activity, so as to strengthen aerobic
Bacterium adsorbs the active area of pollutant, and passes through electrostatic interaction, macromolecule winding and ionic bridge in biochemical reaction later stage small flco
The effect of connecing is agglomerated into the Floe structure of high activity again.
In the present invention, the substantial amounts of nutriment of microorganism adsorption and repertory play the polysaccharose substance of a large amount of high viscosities,
So that large quantity of moisture, which is adsorbed in Sludge Surface, causes sludge bulking, it can be gone using centrifugal force in the broken scattered device of eddy flow and shearing effect
Except water is combined, strengthen sludge itself proportion, prevent der Pilz amount reproduction.
In the present invention, the oil and gas on inside sludge and surface are adsorbed in by rotational-flow shearing power and centrifugal action removing
Bubble, sludge proportion increase, alleviates digestion floating degree.
Realize eddy flow technique coupling oxidation ditch process to strengthen wastewater treatment there is provided one kind in the second aspect of the invention
Main device required for efficiency:Setting pot for sewage disinfection treatment, the oxidation ditch aeration pond for denitrogenation dephosphorizing, for excellent
Change the broken scattered device of eddy flow of biochemical process.
In the present invention, the optional scope of the broken scattered device inlet flow rate of eddy flow for optimizing biochemical process is 10-100m3/ h,
The nominal diameter of the broken scattered device single tube of eddy flow is determined according to actual sludge reflux amount, or passes through the broken scattered device single tube of many eddy flows in parallel
Mode solves big flow sludge reflux liquid processing operating mode.
In the present invention, the broken scattered device of eddy flow can be 4 ° -20 ° using single import or many imports, cone section cone angle.
In the present invention, the broken scattered device import of eddy flow uses tangential inlet, and entry shape is using circular or square.
In the present invention, it is more than 95% that the broken scattered device degassing of eddy flow, which removes efficiency,.
The method for describing the present invention in detail below according to accompanying drawing.
Fig. 1 is to couple oxidation ditch process to strengthen at waste water according to a kind of eddy flow technique of an embodiment of the invention
Manage the process chart of efficiency.As shown in figure 1, life or industrial wastewater, which enter setting pot 1, carries out cyclonic separation, after pretreatment
The waste water arrived enters oxidation ditch reaction tank 2, and soluble BOD (Biochemical Oxygen Demand) is active in aeration zone
Sludge microbe absorption occurs nitration reaction and provides nitrogen source for nitrate nitrogen for anti-nitration reaction by mineralized nitrogen, is then pushed away in current
Action carries out circulation under in oxidation irrigation canals and ditches, and microorganism carries out nitration denitrification, denitrogenation dephosphorizing etc. to realize dirt during this
Water warfare.A part of sludge that the excess sludge of generation enters in second pond 4, second pond 4 presses sludge reflux by reflux line
Than being back to water inlet replenishment system sludge concentration.The present invention sets up the broken scattered device 5 of eddy flow on reflux pipeline, utilizes special flow field
Suitable hydraulic shear environment is created, sludge activity is improved；The gas carried under one's arms and light in removing flco under centrifugation field action
Matter oil etc., solves sludge bulking and floating, improves sludge itself proportion；Promotion mixed liquor flowing, enhancing flco and pollutant
Mass-transfer efficiency, improves sewage disposal efficiency.
Fig. 2 is the broken scattered device single tube structure schematic diagram of an eddy flow of embodiments of the invention.The broken scattered device of eddy flow is by inducer
21st, shell of column 22, cone section 23, underflow straight section 24 and overflow segment 25 are constituted, and import uses the square import of tangent line, and taper is 8 °.
Embodiment
The present invention is expanded on further with reference to specific embodiment.It should be appreciated, however, that these embodiments are only used for
It is bright the present invention and be not meant to limit the scope of the invention.The test method of unreceipted actual conditions in the following example, generally
According to normal condition, or according to the condition proposed by manufacturer.
1st, implementing procedure
The present embodiment is applied to the industrial wastewater and plant area's sanitary sewage of processing development zone industry, and its treating capacity is up to 100,000
Ton per day, influent quality and technological parameter are as shown in table 1.Process flow diagram is as shown in figure 1, waste water is revolved through setting pot 1
Flow separation remove scum silica frost to mitigate subsequent handling processing load, after by inlet pipeline enter oxidation ditch reaction tank 2 aeration zone
Carry out nitration reaction, nitration reaction produce nitrate anoxic section by denitrifying bacterium alienation into nitrogen, realize biological denitrificaion.
A large amount of generations and bacterial reproduction in wastewater treatment process due to metabolite make the increase of system sludge concentration, and a large amount of sludge are through water
The plug-flow effect of stream is deposited on the formation excess sludge of second pond 4.By some residual sludge by sludge return pipe be back into
The mouth of a river maintains activated sludge concentration needed for system sewage purification, the adjustable range of the return sludge ratio of the system for 70%~
100%.The broken scattered device 5 of eddy flow is then arranged on sludge reflux pipeline, returned sludge after the processing of the broken scattered device of eddy flow, be back into
Water section, control valve makes underflow opening mixing flow quantity account for the 95% of inlet flow rate.Under accidental conditions, water outlet water is measured
Matter, and observe second pond surface mud scum and frothing.The operating parameter of the broken scattered device of eddy flow is as shown in table 2.
Certain the sewage treatment plants oxidation ditch process secondary treatment system influent quality of table 1
The operating parameter of the broken scattered device of the eddy flow of table 2
2nd, operation result
The sludge flco concentration of the sewage treatment plant is 3400~4000mg/L, and operation temperature is normal temperature, and aeration zone is aerobic
Section DO>2.0mg/L, anoxic section DO maintains 0.5mg/L or so substantially.Pass through Malvern laser particle analyzer (Beckman Coulter
LS 230) measurement result show eddy flow after sludge particle diameter distribution offset to the left, average grain diameter is reduced to original 50% or so,
But sludge along irrigation canals and ditches circulation for a period of time after, flocculated into again in electrostatic interaction and small flocculation structure under chemical bond high living
Property big flocculating body structure, particle diameter increase, settling property is good, and SVI values are in above and below 100mL/g fluctuations.It is long in eddy flow hydraulic shear
The lower activated sludge denitrification rate of phase effect improves 15%~28%, and Mud up-floating and frothing are effectively controlled.Sludge
Reflux ratio is arranged to 80% effect preferably, secondly level effluent quality is COD≤60mg/L, BOD5<20mg/L, NH4 +-N≤5mg/
L, TN≤20mg/L, TP<2mg/L, pH6.5~7.5, SS<20mg/L.
In terms of energy consumption, compared to traditional handicraft, the increased energy consumption of present invention institute is mainly used for supporting the broken scattered device of eddy flow to make
Pump carries energy consumption, the pressure loss (damage i.e. between the import of the broken scattered device of eddy flow and underflow opening of the broken scattered device of the eddy flow
Lose) in below 0.15Mpa, energy consumption cost is low.
In terms of opereating specification and stability, eddy flow is broken to dissipate device device and simple to operate, from the point of view of experimental result, by eddy flow
The mixed liquor settling property of broken scattered device effect is improved, and contributes to system stable operation.
3rd, technique effect
The technology is transformed on traditional oxidation ditch sewage treatment technology, simple in construction, and the low eddy flow of energy consumption is broken to be dissipated
Device pressure drop is controlled in below 0.15Mpa.Advantage using the technology is simple to operate, non-secondary pollution and does not influence system stable
Operation, system waterpower flox condition is improved while sludge activity is improved, it is to avoid promote fluid stream by increasing aeration quantity
The dynamic energy loss caused.And alleviate Mud up-floating and foam is led to a phenomenon, improve sewage treating efficiency and water outlet water
Matter, contributes to sewage disposal enterprise to reach national Effluent criteria, brings economical and environmentally friendly benefit.
The modernization system is simple, easy to maintenance, small investment, suitable for existing urban wastewater treatment firm using oxidation ditch as main body work
The mark that carries of skill is transformed, and can reach that urban wastewater treatment firm proposes the requirement of mark transformation, water outlet after processing is reached national discharge mark
Alignment request.
In summary be only invention preferred embodiment, not for limit the present invention practical range.It is i.e. all according to
The equivalent changes and modifications that the content of scope of the present invention patent is made, all should be the technology category of the present invention.
Claims (14)
1. a kind of including the broken oxidation ditch sewage treatment for dissipating processing of eddy flow, methods described is included in containing oxidation ditch, sand setting
Sewage is handled in pond and second pond, and the sludge that second pond is back into water inlet is carried out eddy flow and broken by the broken scattered device of eddy flow
Processing is dissipated, the gas isolated is escaped into air, the broken scattered device group of the eddy flow includes the broken scattered device of at least one eddy flow.
2. the method as described in claim 1, it is characterised in that the broken scattered processing of the eddy flow is configured to (1) using in eddy flow field
Velocity gradient field strength activated sludge periphery hydraulic shear effect, it is ensured that the high activity on zoogloea surface, removal be coated on wadding
The netted impurity of body surface face difficult degradation and the mass transfer efficiency with reference to the high flco interface of water extraction to central active region；Or (2) utilize rotation
Stream turbulence acts on improving system current flow rate, promotes being sufficiently mixed for oxygen, water pollutant and microorganism, to strengthen
The nitration reaction of aerobic process；Or (3) have promoted oxidation ditch bottom sludge to flow, and make aeration zone sludge suspension in water body, keep away
Exempt from sludgd deposition, increase sludge utilization rate；Or (4) crush what is floated in biochemical process by the gentle bubble of enrichment grease by eddy flow
Gas in aging sludge, eddy flow removing sludge, optimizes effluent quality, prevents sludge bulking, improve settling property；Or (1)-
(4) any combination in.
3. the method as described in claim 1, it is characterised in that the oxidation ditch includes Carrousel oxidation ditches or Orbal oxygen
Change ditch.
4. the method as described in claim 1, it is characterised in that the broken scattered device of the eddy flow includes inducer, shell of column, cone section, bottom
Straight section and overflow segment are flowed, wherein import, underflow opening pressure is reduced to 0.05-0.5MPa, and inlet flow rate is 1-10m/s.
5. the method as described in claim 1, it is characterised in that the shearing effect inside the broken scattered device of the eddy flow comes from fluid
Velocity gradient and barometric gradient that itself flowing is formed, shear rate G are more than or equal to 1000s-1, in hydraulic shear effect
Under, the difficult degradation colloidal type material accumulated for a long time on flco surface be able to grinding remove, and formed consolidation, higher active
Grain sludge, is conducive to sludge settling.
6. the method as described in claim 1, it is characterised in that in the broken scattered processing of eddy flow, under eddy flow turbulence effect, promote
The flowing of system mixed liquor, prevents sludgd deposition, instead of enhanced aeration intensity come by way of strengthening flowing in pond, reduction
Energy consumption.
7. the method as described in claim 1, it is characterised in that in the broken scattered processing of eddy flow, under high shear forces, flco meeting
Higher active smaller flocculation structure is dispersed into, so that the active area that aerobic bacteria adsorbs organic pollution is added, and in life
Change the floc sedimentation knot that reaction later stage small flco is agglomerated into high activity by electrostatic interaction, macromolecule winding and the effect of ion bridge joint again
Structure.
8. the method as described in claim 1, it is characterised in that in the broken scattered processing of eddy flow, centrifuged using broken dissipate in device of eddy flow
Power and shearing effect, which are removed, combines water, reduces because Water Molecular Adsorption is in sludge bulking caused by Sludge Surface, strengthens sludge
Itself proportion, prevents der Pilz amount reproduction.
9. the method as described in claim 1, it is characterised in that in the broken scattered processing of eddy flow, pass through rotational-flow shearing power and centrifugation
Effect removing is adsorbed in the oil and bubble on inside sludge and surface, and the increase of sludge proportion alleviates digestion floating degree.
10. a kind of device for being used to implement method as claimed in claim 1, described device includes being used for dirt by what pipeline was connected
The setting pot of water pretreatment, the oxidation ditch reaction tank for denitrogenation dephosphorizing and broken for carrying out the broken eddy flow for dissipating processing of eddy flow
Dissipate device.
11. device as claimed in claim 10, it is characterised in that the broken scattered device inlet flow rate scope of eddy flow is 10-100m3/ h, root
Factually sludge reflux amount in border determines the nominal diameter of the broken scattered device single tube of eddy flow, or passes through the side of the broken scattered device single tube of many eddy flows in parallel
Formula solves big flow sludge reflux liquid processing operating mode.
12. device as claimed in claim 10, it is characterised in that the broken scattered device of the eddy flow include inducer, shell of column, cone section,
Underflow straight section and overflow segment, and the broken scattered device of the eddy flow, using single import or many imports, cone section cone angle is 4 ° -20 °.
13. device as claimed in claim 10, it is characterised in that the broken scattered device import of the eddy flow uses tangential inlet, import
Shape is using circular or square.
14. device as claimed in claim 10, it is characterised in that the degassing efficiency of the broken scattered device of the eddy flow is more than 95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367659.4A CN106976965A (en) | 2017-05-23 | 2017-05-23 | It is a kind of to include the oxidation ditch sewage treatment and device of the broken scattered processing of eddy flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367659.4A CN106976965A (en) | 2017-05-23 | 2017-05-23 | It is a kind of to include the oxidation ditch sewage treatment and device of the broken scattered processing of eddy flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106976965A true CN106976965A (en) | 2017-07-25 |
Family
ID=59342690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710367659.4A Pending CN106976965A (en) | 2017-05-23 | 2017-05-23 | It is a kind of to include the oxidation ditch sewage treatment and device of the broken scattered processing of eddy flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106976965A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108763623A (en) * | 2018-04-10 | 2018-11-06 | 哈尔滨理工大学 | Bubble rapid transfer mass model building method is purified under ultrasound and eddy flow field in melt |
| CN109019830A (en) * | 2018-08-09 | 2018-12-18 | 陕西科技大学 | A kind of activated sludge process sludge reduction and flocculation structure regulate and control method |
| CN110668558A (en) * | 2019-10-31 | 2020-01-10 | 同济大学 | Recovery system of composite powder carrier in HPB town sewage treatment |
| CN111056591A (en) * | 2019-12-09 | 2020-04-24 | 鹏鹞环保股份有限公司 | Hydrocyclone for separating sediment deposited in biochemical pool |
| CN113402024A (en) * | 2021-05-26 | 2021-09-17 | 山东华城城建设计工程有限公司 | Sewage denitrification treatment device and process method thereof |
| CN114455706A (en) * | 2021-12-21 | 2022-05-10 | 江苏裕隆环保有限公司 | Two mud backward flow AOA degree of depth denitrogenation systems of sewage |
| CN117819713A (en) * | 2024-01-30 | 2024-04-05 | 福州市规划设计研究院集团有限公司 | Device and method for degrading organic wastewater by using carrousel oxidation ditch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060642A (en) * | 2015-08-12 | 2015-11-18 | 中国科学院重庆绿色智能技术研究院 | Sewage treatment method and system used for enhancing phosphorus and nitrogen removal and based on sludge carbon source circulation |
| CN105174463A (en) * | 2015-10-20 | 2015-12-23 | 中国科学院重庆绿色智能技术研究院 | Sewage treatment system and method based on sludge carbon source and nitrogen and phosphorus recycling |
| US20150376043A1 (en) * | 2014-06-30 | 2015-12-31 | D.C. Water & Sewer Authority | Method and apparatus for wastewater treatment using external selection |
| CN105565491A (en) * | 2014-10-16 | 2016-05-11 | 中国石油化工股份有限公司 | Activated sludge treatment method and system for wastewater |
| JP2016193389A (en) * | 2015-03-31 | 2016-11-17 | オルガノ株式会社 | Wastewater treatment method and wastewater treatment apparatus |
-
2017
- 2017-05-23 CN CN201710367659.4A patent/CN106976965A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150376043A1 (en) * | 2014-06-30 | 2015-12-31 | D.C. Water & Sewer Authority | Method and apparatus for wastewater treatment using external selection |
| CN105565491A (en) * | 2014-10-16 | 2016-05-11 | 中国石油化工股份有限公司 | Activated sludge treatment method and system for wastewater |
| JP2016193389A (en) * | 2015-03-31 | 2016-11-17 | オルガノ株式会社 | Wastewater treatment method and wastewater treatment apparatus |
| CN105060642A (en) * | 2015-08-12 | 2015-11-18 | 中国科学院重庆绿色智能技术研究院 | Sewage treatment method and system used for enhancing phosphorus and nitrogen removal and based on sludge carbon source circulation |
| CN105174463A (en) * | 2015-10-20 | 2015-12-23 | 中国科学院重庆绿色智能技术研究院 | Sewage treatment system and method based on sludge carbon source and nitrogen and phosphorus recycling |
Non-Patent Citations (1)
| Title |
|---|
| 杨晓惠等编著: "《固液分离原理与工业水处理装置》", 31 January 2017 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108763623A (en) * | 2018-04-10 | 2018-11-06 | 哈尔滨理工大学 | Bubble rapid transfer mass model building method is purified under ultrasound and eddy flow field in melt |
| CN108763623B (en) * | 2018-04-10 | 2021-09-07 | 哈尔滨理工大学 | Method for constructing transient mass transfer model of purified bubbles in melt under ultrasonic and rotational flow fields |
| CN109019830A (en) * | 2018-08-09 | 2018-12-18 | 陕西科技大学 | A kind of activated sludge process sludge reduction and flocculation structure regulate and control method |
| CN110668558A (en) * | 2019-10-31 | 2020-01-10 | 同济大学 | Recovery system of composite powder carrier in HPB town sewage treatment |
| CN111056591A (en) * | 2019-12-09 | 2020-04-24 | 鹏鹞环保股份有限公司 | Hydrocyclone for separating sediment deposited in biochemical pool |
| CN113402024A (en) * | 2021-05-26 | 2021-09-17 | 山东华城城建设计工程有限公司 | Sewage denitrification treatment device and process method thereof |
| CN114455706A (en) * | 2021-12-21 | 2022-05-10 | 江苏裕隆环保有限公司 | Two mud backward flow AOA degree of depth denitrogenation systems of sewage |
| CN117819713A (en) * | 2024-01-30 | 2024-04-05 | 福州市规划设计研究院集团有限公司 | Device and method for degrading organic wastewater by using carrousel oxidation ditch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106976965A (en) | It is a kind of to include the oxidation ditch sewage treatment and device of the broken scattered processing of eddy flow | |
| CN106277319B (en) | A kind of Bardenpho denitrification dephosphorization technique based on MBBR | |
| CN103880248B (en) | A kind of coking wastewater processing system and treatment process | |
| CN103936148B (en) | A kind of constant discharging varying duty SVBR sewage treatment process | |
| CN107381961A (en) | A kind of processing system of decentralized type sewage and the processing method using the processing system | |
| CN101525207A (en) | Integrated pre-denitrification and denitrogenation biological filter sewerage treatment process | |
| CN106946422A (en) | Include the Cyclic Activated Sludge System sewage water treatment method and device of eddy flow processing | |
| CN205258127U (en) | Circulatory flow loop type multistage sludge -biofilm intergrowth combined type bioreactor | |
| CN105236564B (en) | A kind of BAF combined stuffing and application | |
| CN106966505A (en) | A kind of A that processing is cracked including eddy flow2O sewage water treatment methods and device | |
| CN209226783U (en) | A kind of integrated rural sewage-treatment plant | |
| CN110540292A (en) | Enhanced synchronous nitrification and denitrification process for adding AHLs signal molecules into biological moving bed process | |
| CN209428226U (en) | A kind of sludge dual reflux AOA biofilm treatment apparatus applied to sewage water denitrification | |
| CN109534599A (en) | A kind of family sewage water treatment method of strengthened denitrification | |
| CN101570380A (en) | Combined sewage treatment device | |
| CN205382058U (en) | Miniature integrated domestic sewage treatment equipment | |
| CN201598224U (en) | Biological nitrogen and phosphorus removal treatment and filter integrated sewage treatment system | |
| CN109292967A (en) | A kind of high ammonia nitrogen rural area biochemical sewage treatment device and method based on SBBR technique | |
| CN108467154A (en) | A kind of SBR waste water treatment process of soybean lecithin production | |
| CN203112657U (en) | Constant-effluent variable-load SVBR (Steady outflow Variable load Biological Reactor) sewage treater | |
| CN106966506A (en) | A kind of SBR method of wastewater treatment and device that carbon is released including online eddy flow | |
| CN110117064A (en) | A kind of Biological Contact Oxidation Process and its equipment using nanometer aeration technology | |
| CN206033509U (en) | Processing apparatus of brewing wastewater high concentration organic matter degradation and denitrogenation | |
| CN201914974U (en) | Dual-circular groove membrane bioreactor (MBR) waste water treatment system | |
| CN102010062A (en) | MBR wastewater treating system with double circular grooves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170725 |
|
| RJ01 | Rejection of invention patent application after publication |