CN106132881B - The bioremediation and device of organic drainage - Google Patents
The bioremediation and device of organic drainage Download PDFInfo
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- CN106132881B CN106132881B CN201580015795.6A CN201580015795A CN106132881B CN 106132881 B CN106132881 B CN 106132881B CN 201580015795 A CN201580015795 A CN 201580015795A CN 106132881 B CN106132881 B CN 106132881B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/06—Aerobic processes using submerged filters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/102—Permeable membranes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/104—Granular carriers
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1226—Particular type of activated sludge processes comprising an absorbent material suspended in the mixed liquor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/346—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from semiconductor processing, e.g. waste water from polishing of wafers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Biological Treatment Of Waste Water (AREA)
- Activated Sludge Processes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a kind of biological treatment of organic drainage using activated sludge process, it can stably keep sludge and animalcule, in addition, the yield of sludge can be substantially reduced, and realize the raising of the treatment effeciency based on high loaded process and the stabilisation of water quality treatment.In the second biological treating tank (2), circulation flow path (27) and rising flow path (24) are provided with by dividing plate (26) and partition plate (23).Biological treatment of water in biological treatment room (29) by higher than the LV of rising flow path (24), by water flowing in a manner of upper in circulation flow path (27).With 0.5~5m/ it is small when rising flow path (24) is increased, the processing water of separation of solid and liquid is taken out from the groove (2).
Description
Technical field
The present invention relates to the bioremediation and device of a kind of organic drainage, it can be widely used for arranging life
The place of the organic drainages such as water, sewage, bakery and confectionery draining, pulp factories draining, semiconductor manufacturing draining, liquid crystal manufacture draining
In reason.
Background technology
When carrying out biological treatment to organic drainage activated sludge process used due to water quality treatment it is good, be easy to tie up
The advantages that shield, be widely used in sewage disposal, Industrial Wastewater Treatment etc..However, the BOD volumetric loadings in activated sludge process
Usually 0.5~0.8kg/m3/ day or so, therefore, it is necessary to broad floor space.Further, since the 20 of decomposed BOD~
40% is converted into thalline, i.e. sludge, therefore, the processing of substantial amounts of excess sludge also become problem.Have in activated sludge process
Following methods：In sludge and the membrane type activated sludge process that membrane separation device is utilized in the separation of solid and liquid of processing water；And using heavy
The sedimentation basin type activated sludge process in shallow lake pond.The shortcomings that membrane type activated sludge process, is to need the setup fee of film, exchange and maintenance expense.
The shortcomings that sedimentation basin type activated sludge process, is that setting area is big.
High load capacity on organic drainage is handled, it is known to adds the fluidized bed method of carrier.When using this method, energy
With 3kg/m3BOD volumetric loadings more than/day are operated.However, the shortcomings that this method is, sludge yield is to have decomposed
BOD 30~50% or so, than common activated sludge process higher.
In patent document 1, describe and handled organic drainage by bacterium in the first treatment trough first, make
Contained organic matter carries out oxygenolysis after being converted into the thalline of non-agglutination property bacterium in draining, makes in second processing groove solid
The property protozoan is preyed on removal, thus, can reduce the amount of excess sludge.By using this method, then can carry out high negative
Lotus operates, and the treatment effeciency of activated sludge process can also improve.
The wastewater treatment side that the predation of the protozoan, metazoa of the above-mentioned higher level for being pointed to bacterium is used
Method is included into a large amount of schemes.For example, in patent document, describe occur in the processing method for patent document 1 because
The countermeasure for the problem of process performance deteriorates caused by the water quality of raw water changes.As specific method, listing " will be processed
The BOD of water, which changes, to be adjusted to the median of mean concentration up and down within 50% ", " measure the first treatment trough over time
Interior and the first processing water water quality ", " in the water quality deterioration of the first processing water, microorganism formulation or seed sludge are made an addition to
The methods of first treatment trough ".
In patent document 3, it is proposed that following methods：Make protozoan, metazoa predation bacterium, yeast, unwrapping wire
Bacterium, algae, mould class, wastewater treatment initial stage precipitating sludge, excess sludge when, by ultrasonication or mechanical agitation, make by
The size of the flocculate of predation is less than the mouth of animal.
The bioremediation of the organic drainage of the multistep treatment progress of thermopnore and activated sludge process is taken as,
Have in patent document 4 described.In the method, by using BOD sludge loadings as 0.1kg-BOD/kg-MLSS/d (kg-BOD/
Kg- mixed liquor suspended solid, MLSSs/day) underload the activated sludge process of rear class is operated, can make sludge itself occur oxygen
Change, substantially reduce sludge withdrawal amount.
In patent document 5, a kind of biological treating tank of organic drainage is described, in the biology using activated sludge process
The drain outlet side for the treatment of trough sets interval to form rising flow path, make biological treatment of water with LV1~20m/ when small to upper
Mode water flowing sends the sludge for being deposited in the flow path back to biological treating tank, and the supernatant that will rise by the flow path in the flow path
Water is expelled to outside groove.
Patent document 1：Japanese Unexamined Patent Application 55-20649 publications；
Patent document 2：Japanese Unexamined Patent Publication 2000-210692 publications；
Patent document 3：Japanese Unexamined Patent Application 55-20649 publications；
Patent document 4：No. 3410699 publications of Japanese Patent Publication No.；
Patent document 5：WO2013/103124A1.
The content of the invention
As the method for keeping sludge in biological treating tank, there is the sludge carried out using sedimentation basin to send method back to, and adopt
The processing hydrodissection carried out with film.The shortcomings that sludge carried out using sedimentation basin type sends method back to is that setting area is big.Separately
Outside, the shortcomings that sludge carried out using film is sent back to is, it is necessary to expend the setup fee of film, exchange and maintenance expense.
The above-mentioned activated sludge process using animalcule predation is actually applied in organic wastewater processing, and
And according to the situation of the draining as object, treatment effeciency can be improved, reduce sludge yield.However, present situation is the sludge quantity
Minimizing effect it is unstable.
By using activated sludge process biological treating tank in add thermopnore carrier, can stably maintain sludge,
Animalcule, still, existing needs separating net-screen, the problem such as decline of oxygen dissolved efficiency caused by carrier.
By using the biological treating tank of patent document 5, rising flow path is set in drain outlet side, it is small with LV1~20m/
When to upper mode water flowing, thus, can stably keep sludge, animalcule in biological treating tank.
However, when when being mixed into bubble in rising flow path, the separative efficiency of the sludge in rising flow path declines, can
Sludge can be caused to flow out, the sludge concentration in biological treating tank declines.
The problem of the present invention is, there is provided the bioremediation and dress of a kind of organic drainage using activated sludge process
Put, in the biological treatment for the organic drainage that application activated sludge process carries out, can stably keep sludge and animalcule,
In addition, sludge yield can be substantially reduced, and the treatment effeciency of high loaded process can be improved, and realize water quality treatment
Stabilisation.
The bioremediation of the organic drainage of the first invention, biology is carried out in biological treating tank to organic drainage
Processing, in order to carry out separation of solid and liquid to the sludge in biological treatment of water in the biological treating tank, in the draining of biological treating tank
Outlet side sets partition plate, by be divided into the biological treating tank biological treatment room and the drain outlet side rising flow path (on
To stream flow path), the biological treatment of water for making to come from the biological treatment room when LV0.5~5m/ is small to water flowing in a manner of upper in
The rising flow path, the drain outlet on supernatant water from the rising flow path top is expelled to outside groove, the spy of the bioremediation
Sign is, by abreast setting dividing plate in the biological treatment room with the partition plate, forms upper and lower part and is all communicated in this
The circulation flow path of biological treatment room, by the indoor a part of biological treatment of water of biological treatment with than the LV in the rising flow path more
Big LV, by water flowing in a manner of upper in the circulation flow path.
The bioremediation of the organic drainage of second invention, arranges Organic in multistage biological treating tank is set to
Water carries out biological treatment, and this method is generated point by scattered decomposition of the bacterium to organic matter in the biological treating tank of the first order
Increased first biological treatment of water of bacterium is dissipated, and final biological treatment of water is generated in the biological treating tank of most rear class, in order to most
Separation of solid and liquid is carried out to the sludge in final biological treatment of water in the biological treating tank of rear class, in the biological treatment of the most rear class
The drain outlet side of groove sets partition plate, the rising of biological treatment room and the drain outlet side will be divided into the biological treating tank
Flow path, will come from the biological treatment of water of the biological treatment room when LV0.5~5m/ is small to water flowing in a manner of upper in the rising
Flow path, by supernatant water outside the drain outlet discharge groove on the rising flow path top, the bioremediation is characterized in that, is led to
Cross and dividing plate is abreast set in the biological treatment room with the partition plate, form upper and lower part and be all communicated in the biological treatment room
Circulation flow path, by the indoor a part of biological treatment of water of biological treatment with the LV than the LV biggers in the rising flow path, with
To upper mode water flowing in the circulation flow path.
The biological treatment device of the organic drainage of 3rd invention, biology is carried out in biological treating tank to organic drainage
Processing, in order to carry out separation of solid and liquid to the sludge in biological treatment of water in the biological treating tank, in the draining of biological treating tank
Outlet side sets partition plate, and the rising flow path of biological treatment room and the drain outlet side will be divided into the biological treating tank, in the future
From in the biological treatment of water of the biological treatment room by water flowing is in the rising flow path in a manner of upper, by supernatant water from the upper up-flow
The drain outlet on road top is expelled to outside groove, and the biological treatment device is characterized in that, by with the partition plate abreast at this
Dividing plate is set in biological treatment room, forms the circulation flow path that upper and lower part is all communicated in the biological treatment room, water flowing is set
Mechanism, make the indoor a part of biological treatment of water of biological treatment with the LV than the LV biggers in the rising flow path, with to upstream
Mode water flowing in the circulation flow path.
The biological treatment device of the organic drainage of 4th invention, arranges Organic in multistage biological treating tank is set to
Water carries out biological treatment, and in first order biological treating tank, by scattered decomposition of the bacterium to organic matter, it is increased to generate scattered bacterium
First biological treatment of water, generates final biological treatment of water in the biological treating tank of most rear class, in order at the biology of most rear class
Manage in groove and separation of solid and liquid is carried out to the sludge in final biological treatment of water, in the drain outlet of the biological treating tank of the most rear class
Side sets partition plate, the rising flow path of biological treatment room and the drain outlet side will be divided into the biological treating tank, will come from
Water flowing is in the rising flow path in a manner of to upstream for the biological treatment of water of the biological treatment room, by supernatant water from the rising flow path
The drain outlet in portion is expelled to outside groove, and the biological treatment device is characterized in that, by with the partition plate abreast in the biology
Dividing plate is set in process chamber, upper and lower part is formed and is all communicated in the circulation flow path of the biological treatment room, and water flowing machine is set
Structure, make the indoor a part of biological treatment of water of biological treatment with the LV than the LV biggers in the rising flow path, with to upper
Mode water flowing is in the circulation flow path.
In the first~the 4th invention, the LV flowed up in the circulation flow path is preferably set to the rising flow path
1.5~200 times of LV.
Invention effect
In the present invention, rising flow path is set in biological treating tank, and by biological treatment of water, with high LV, (0.5~5m/ is small
When), by water flowing in a manner of upper, in the rising flow path, therefore, the good sludge of settleability is sunk in the rising flow path
Drop separation.Thereby, it is possible to which selectively the good sludge of settleability is held in groove, and only the sludge of settleability difference is arranged
Go out.Accordingly, it is capable to the sludge in biological treatment device is kept into higher concentration.Since the sludge concentration in processing water is low, according to
Situation needs, and can omit the equipment for separating liquid from solid for separated sludge, even if setting equipment for separating liquid from solid, can also become than existing
Some equipment for separating liquid from solid smallers and the less expensive device of price.
If accumulate sludge in the rising flow path or be mixed into what is produced by the aeration of biological treating tank in rising flow path
Bubble, then may cause that the separation of solid and liquid of sludge is bad, water quality treatment is deteriorated.In consideration of it, in the present invention, rise in outlet side
Flow path sets circulation flow path previously by dividing plate, by the biological treatment liquid in groove with the LV highers than outlet side rising flow path
LV, by water flowing in a manner of upper in the circulation flow path.Thereby, it is possible to prevent bubble from being flowed out to outlet side, and with gas
Steep the outflow of the sludge of outflow.
In an embodiment of the invention, the water flowing and water flowing that raw water is repeated stop operation, and pass through setting
The water flowing time 1/20 to 1/1, particularly 1/20 to 1/2 water flowing dwell time, can will residue in outlet side rising flow path
Sludge return to the biological treatment portion in groove, make processing more stablize.
The sludge that settleability is improved, precipitated in rising flow path lower part superfluously can regularly be taken out.Can be by the dirt of taking-up
Mud returns to the upstream side in the biological treating tank.
In an embodiment of the invention, biological treating tank is arranged to multilevel hierarchy, by the biological treatment of prime
Groove sets shaking carrier in the biological treating tank of most rear class, makees as the scattered bacterium groove that organic matter is converted to scattered bacterium
To prey on the foothold that the anchorage of scattered bacterium filters predation type animalcule.In this process, not merely with rocking bed carrier,
Can also be by the use of the good sludge of settleability as the foothold of animalcule, so as to highly keep the concentration of microorganism.
By the way that rocking bed carrier to be set to the foamed plastics of sheet, the more preferable sludge creation of settleability can be made and be held in
In groove.
The settleability of sludge can be improved by adding agglutinant in biological treating tank.
Brief description of the drawings
Fig. 1 is the block diagram of the embodiment for the bioremediation and device for representing the organic drainage of the present invention.
Fig. 2 is the block diagram of the embodiment for the bioremediation and device for representing the organic drainage of the present invention.
Fig. 3 is the block diagram of the embodiment for the bioremediation and device for representing the organic drainage of the present invention.
Fig. 4 is the block diagram of the embodiment for the bioremediation and device for representing the organic drainage of the present invention.
Embodiment
In the following, the bioremediation of the organic drainage of the present invention and the embodiment of device are carried out referring to attached drawing detailed
Describe in detail bright.Fig. 1~3 are the system diagrams of the embodiment for the bioremediation and device for representing the organic drainage of the present invention.
In figs. 1 to 3,1 is the first biological treating tank, and 2 be the second biological treating tank, and 11,21 be diffuser, and 12 be flowing
Bed carrier, 16 be carrier separation mesh screen, and 22 be rocking bed carrier.In figs. 1 to 3,23 it is disposed on the second biological treating tank 2
Partition plate, 24 be rising flow path, in the rising flow path 24 sludge carry out separation of solid and liquid.In the second biological treating tank 2, along every
Plate 23 sets dividing plate 26 in biological treatment room, and circulation flow path 27 is formed between dividing plate 26 and partition plate 23.In the recycle stream
The mechanism (in this embodiment, being air-dispersing spout 28) for forming upper up-flow is provided with road 27.In addition, in Fig. 1~3
In, the component to realizing identical function assigns same-sign.
It is 1kg/m by BOD volumetric loadings in the mode of Fig. 13It is more than/day, such as 1~20kg/m3The raw water in/day (has
Machine draining) import in the first biological treating tank 1, it is aerated using diffuser 11, by dispersed bacterium, (non-agglutination property is thin
Bacterium) more than the 70% of organic principle (dissolubility BOD), preferably more than 80%, further preferred more than 85% aoxidize and is divided
Solution.It is preferred that the pH of first biological treating tank 1 is set to 6~8.5.But containing a large amount of in the raw waters such as food manufacturing draining
Oil when, semiconductor manufacturing draining, liquid crystal manufacture draining when in raw water contain substantial amounts of Organic solvent, detergent when,
In order to improve decomposition rate, pH can be set to 8~9.
Water flowing to the first biological treating tank 1 crosses formula using one.By by the BOD volumetric loadings of the first biological treating tank 1
It is set to 1kg/m3More than/day, for example it is set to 1~20kg/m3/ day, by HRT (raw water holdup time) be set to 24 it is small when below, preferably
Be set to 8 it is small when below, be for example set to 0.5~8 it is small when, the processing water of dispersed bacterium dominance can be obtained.In addition, pass through contracting
Short HRT, can be handled with the high load capacity draining low to BOD concentration.
In the first biological treating tank 1, by the way that the part for coming from the sludge of the biological treating tank of rear class is sent back to or
First biological treating tank 1 is set to more than two level multilevel hierarchy or addition carrier 12 by person, can realize that BOD volumetric loadings are
5kg/m3The high load capacity processing of/more than d.
The shape of thermopnore carrier 12 can be the arbitrary shape such as spherical, graininess, hollow tube-shape, filiform, tabular, size
(diameter) is 0.1~10mm or so.The material of carrier 12 can be any material such as natural material, inorganic material, high molecular material
Material, can also use spawn.Carrier is not limited to thermopnore carrier, can also be fixed bed carrier or shaking carrier.
When using fixed bed carrier, shaking carrier, it is not necessary to separating net-screen 16.
When make an addition to the filling rate of carrier of the first biological treating tank 1 it is high when, do not generate scattered bacterium, bacterium is attached to load
Body, or der Pilz propagation.Therefore, when carrier is thermopnore carrier, the load of the first biological treating tank 1 is made an addition to by setting
The filling rate of body is less than 10%, is, for example, 1~10%, when carrier is fixed bed carrier, shaking carrier, by setting
State filling rate to be less than 5%, be, for example, 0.5~5%, then can be influenced from concentration change, generation is easy to be preyed on scattered
Bacterium.
Dissolved oxygen (DO) concentration of first biological treating tank 1 can be set to below 1mg/L, be preferably set to below 0.5mg/L,
Suppress the propagation of der Pilz.
The processing water (the first biological treatment of water) of first biological treating tank 1 is imported to the second biological treating tank 2 of rear class, into
Row aeration, by the oxygenolysis of remaining organic principle, self decomposition and the predation of animalcule of dispersed bacterium, subtracts
The amount of few excess sludge.
In the biological treating tank (the second biological treating tank 2 in the embodiment) of final level, to surround its outlet portion
Mode partition plate 23 is set, along the partition plate 23, dividing plate 26 is set, be divided into biological treating tank 2 biological treatment room 29,
Circulate flow path 27 and rising flow path 24.The upper end of the partition plate 23 protrudes from the water surface of the second biological treating tank 2.Under partition plate 23
End is positioned at the lower section of more than the water surface 2m of the second biological treating tank of distance 2, particularly 3~4m.Shape between the partition plate 23 and cell wall
As rising flow path 24.During sludge mixing water in second biological treating tank 2 rises in the rising flow path, sludge is sunk
Drop.In the present invention, the LV of the upper up-flow in the rising flow path 24 for 0.5~5m/ it is small when, be preferably 1~2.5m/ it is small when, into
When one step is preferably 1.5~2.5m/ small.The taking-up pipe 25 of excess sludge is provided with the second biological treating tank 2.
There is no particular limitation for the link position of taking-up pipe 25 to excess sludge, however, it is possible to be arranged to and upper up-flow
Road 24 or the lower section connection for circulating flow path 27, the sludge for making its taking-up precipitate superfluously.
It can be arranged to make the part processing water of the second biological treating tank 2 to match somebody with somebody from the top of rising flow path 24 or processing water
Pipe circulates to the upstream side, so as to prevent LV when raw water flow changes from changing.
Circulation flow path 27 is formed between partition plate 23 and dividing plate 26.The upper end of dividing plate 26 is less than the second biological treating tank
2 water surface, lower end are higher than the bottom surface of the second biological treating tank 2.Thus, the upper and lower part for circulating flow path 27 is communicated in biological place
Manage room 29.Air-dispersing spout 28 is provided with circulation flow path 27.
By carrying out air-dispersing by air-dispersing spout 28, the 1.5 of the LV that LV is rising flow path 24 is formed in the circulation flow path 27
~200 times, preferably 2~150 times of upper up-flow, prevent to outlet side, that is, ramping up the outflow of the bubble of flow path 24 and adjoint
The outflow of the sludge of bubble outflow.Method for producing upper up-flow in flow path 27 is circulated, in addition to aeration, can also use
Mechanical agitation carried out based on propeller etc..
In biological treatment room 29, diffuser 21 is provided with as the mechanism for being aerated to biological treatment room 29.
In the case of the method by the use of aeration as the upper up-flow for producing circulation flow path 27, diffuser 21 can be omitted, still, in order to suitable
As both LV for keeping DO and circulation flow path 27 in biological treatment room 29, preferably separately set and be used for biological treatment
The mechanism that room 29 is aerated, and the upper up-flow generation mechanism of circulation flow path 27.
In the second biological treating tank 2, in order to utilize the function of animalcule more slow-footed than bacterial multiplication and bacterium
Self decomposition is, it is necessary to using making animalcule and bacterium rests on operating condition and processing unit in system.Therefore, exist
In the embodiment, in the second biological treating tank 2, rocking bed carrier 22 is arranged at biological treatment room 29, is improved small dynamic
Maintenance dose in the groove of thing.
As rocking bed carrier 22, the soft tablet of the following conditions is preferably satisfied.
(1) sheet body size, preferably groove depth direction 100~400cm of length × groove horizontal direction depth 5
~200cm × 0.5~5cm of thickness.The carrier of the size have be easy to animalcule oviposition, fertility degree it is broad apparent
Surface area.
(2) it is 500cm preferably to have at least two apparent surfaces product2Face above.The carrier of the size, which has, is easy to micro-
Toy oviposition, the broad apparent surface product for the degree given birth to.
(3) material preferred foams synthetic resin, particularly preferred flexible polyurethane foams.By the carrier that the material is formed due to
With bendability, therefore, water flowing will not be hindered, and biomembrane is easily peeled off.
(4) preferably aperture is 0.05~10mm.Hole with the aperture is the size that sludge is easy to adhere to and is easily peeled off.
(5) the abscess number of preferably foam bubble is 5~125/25mm.Carrier with the abscess number, sludge are easy to attached
And be easily peeled off.
If set the light polyurethane foam of this lamellar or narrow strip component etc. more in the second biological treating tank 2
Hole matter sheet rocking bed carrier, then rocking bed carrier have sufficiently elasticity, can be bent in the flowing of trough inner water, thereby while
It is thin that also there is sufficient mechanical strength without breakage occurs.In addition, the water flowing in groove will not be hindered due to bending, but
Equably mix, so as to also can equably flow through the liquid containing sludge in the porous structure of carrier.
The carrier being evenly distributed as the condition of the foam bubble of porous carrier, preferably foam bubble.If foaming
Abscess is excessive or cell diameter is excessive, then the mechanical strength of porous carrier can reduce, therefore, as described above, as abscess
Number/25mm (existing abscess number in the range of the length of 25mm), preferred upper limit value are 125/25mm or so.If on the contrary,
Foam bubble is very few or cell diameter is too small, then the function as porous carrier can not be fully obtained, therefore, in order to fill
The function of porous carrier is waved in distribution, and the preferably lower limit of the abscess number/25mm is 5/25mm or so.In addition, on the bubble
Hole count/25mm, can be obtained by following methods：Using the photo of the porous carrier shot by scanning electron microscope,
The operation of the foam bubble number of the straight line 25mm intersections relative to long side direction is measured for multiple positions, and passes through calculating
The average value of metric results is obtained.
In the second biological treating tank 2, in addition to rocking bed carrier, can also further fill can be in rising flow path 24
Carry out separated thermopnore carrier.
, it is necessary to a large amount of footholds for keeping animalcule in the second biological treating tank 2, still, if carrier
Filling rate is excessive, then can cause the undermixing in groove, cause sludge corruption etc., it is therefore preferable that the filling rate of the carrier of addition
For 0.5~30%, particularly preferably 1~20% or so.
The preferred arrangement of rocking bed carrier is as described below.
(i) in the biological treating tank that rocking bed carrier is set, [the apparent surface product of rocking bed carrier]/[biological treatment
Groove volume] it is 1~50 [m-1].It is preferred that accordingly increase carrier amount with load increase.
Apparent surface product is the outer face surface product not taken in Porous interior surface area, for example, if rectangular
Body, then be total (the length x width x 2+ length × thickness × 2+ thickness × width × 2) of the surface area in 6 faces.
(ii) filling rate of rocking bed carrier, preferably utilizes the later biological treating tank of the biological treating tank of animalcule
The 1~20% of the total measurement (volume) of (when sending back to there are during biological treating tank on line, it is also included within interior).It is it is preferred that corresponding to load increase
Ground increases carrier amount.
(iii) preferably using as the narrow strip sheet body of rocking bed carrier (long side direction × short side direction × thickness direction) with
The long side direction of rocking bed carrier is set to be arranged at as the mode of the depth direction (vertically downward) of groove in groove.The rocking bed is carried
There is no particular limitation for the direction of the short side direction of body, for example, can be to be approximately perpendicular to from flowing on the inside of groove to outflow side
The mode in water flowing direction is arranged in groove.
(iv) when the capacity of the second biological treating tank is big relative to the size of carrier, it is preferred that prepare several pieces and carrying
The top and bottom of body are provided with the carrier of fastener, by defined the piece number be listed in the second biological treating tank depth direction and/or
Width, and fixed on the frame material being made of materials such as SUS and be mounted with the fastener of carrier and carried out blocking.
And then, it is preferred that the carrier element is set into multi-disc in water (flow) direction in the second biological treating tank as needed.
In order to promote the predation carried out by animalcule, the pH of the second biological treating tank 2 can be set to less than 7.0.
In the second biological treating tank 2, the filtering predation type animalcule for not only preying on the thalline of dispersity is increased
Grow, and the agglutination body predation type animalcule that can prey on the sludge of flocculating is also bred.Due to the latter while swimming
While predation flocculate, therefore, in the case of its dominance, sludge prey obtains at sixes and sevens, forms the flocculation of miniaturization
The sludge (sludge of settleability difference) that piece is dispersed therein.Due to the reason of the flocculation piece, particularly UF membrane is carried out in rear class
Membrane type activated sludge process when, it may occur that the blocking of film.Therefore, in order to remove agglutination body predation type animalcule, preferably by SRT
Stably control below 60 days, be preferably controlled in the scope of less than 45 days.If however, SRT be less than 15 days, it is unnecessary
Ground is excessively frequent, and not only agglutination body predation type animalcule is excessively reduced, and the number of filtering predation type animalcule also excessively subtracts
It is few, it is therefore preferable that SRT is more than 15 days.
In the first biological treating tank 1, it is necessary in advance by the major part of organic matter, i.e. draining BOD more than 70%, it is excellent
More than 80% is elected as to be decomposed and be converted into thalline, it is still, in by the first biological treating tank 1 that dissolved organic matter is complete
When decomposing entirely, flocculate is not formed in the second biological treating tank 2, in addition, the nutrition for animalcule propagation is also insufficient,
Form the biological treating tank of sludge (sludge of the settleability difference) dominance for only having densification low.Therefore, as shown in Fig. 2, also may be used
By a part for raw water from bypass the second biological treating tank 2 of supply so that dirty caused by the dissolubility BOD of the second biological treating tank 2
Mud load operates as the mode of more than 0.025kg-BOD/kg-MLSS/d.In MLSS at this time, carrier attachment portion is further included
MLSS.
When the settleability of the sludge in biological treating tank is deteriorated, agglutinant can be temporarily added, improves settleability.
It is preferred that it is added to any one in inorganic agglutinant and organic agglutinant or both as agglutinant at the biology of most rear class
Manage groove.For inorganic agglutinant, iron system, aluminium system can not only be used, additionally it is possible to use using clinker, silica, calcium etc.
Inorganic agglutinant in common drainage sunk well.For organic agglutinant, except anionic system polymer,
Beyond cationic system polymer, additionally it is possible to using the organic agglutinant used in common drainage sunk well, wherein, preferably sun from
Subsystem polymer coagulant.
When shaking carrier cannot be set or when set amount by limited time, can by increase agglutinant addition frequency
Degree keeps settleability, also can by by LV be set in 0.5~5m/ it is small when in relatively low scope keep sludge.
Separation water for carrying out sedimentation separation when small with LV0.5~5m/ as described herein, in order to obtain higher
Water water quality is handled, the operation of any of UF membrane, coagulation sedimentation, pressurization suspension can also be carried out as separation of solid and liquid.In addition,
When carrying out coagulation sedimentation, pressurization suspending, the additive amount of agglutinant can be reduced.By the sedimentation from the second biological treating tank 2
Separation water carries out aggegation processing in coagulating bath, then precipitation process is carried out in solid-liquid separation tank (precipitation tank), so that at separation
Manage water and settled sludge.Aggegation solid-liquid separation tank can not also be set, agglutinant is directly made an addition to the second biological treating tank, is made
Water quality treatment improves.At this time, if settleability is good, cationic system polymer is only added.To the second biological treating tank
The additive amount of the cationic system polymer coagulant of addition is preferably 0.5~20mg/L or so, more preferably 1~10mg/L.
Anaerobic groove 30 can be set as shown in Figure 3, by making the second biological treating tank sludge be circulated wherein, to press down
The propagation of agglutination body predation type animalcule processed.In the case, the HRT of anaerobic groove 30 is made to be set to more than 30 minutes, to make DO
Consumed, part or all of a part for raw water, the first bio-tank processing water can be subjected to water flowing.
In the present invention, raw water supply can be repeated and supply stops.In the case, the service time of raw water
TFWith the supply dwell time T of raw waterSRelation it is preferred：TS/TFFor 1/20~1/1, particularly 1/20~1/2 degree.It is preferred that
TFFor 1~12 it is small when or so.
Fig. 1~3 are an exemplary figures for representing embodiments of the present invention, the restriction of the invention from any diagram.
For example, the 3rd biological treating tank etc. can be set in the rear class of the first biological treating tank 1, the second biological treating tank 2, at biology
Reason groove is arranged to structure more than three-level.Furthermore it is possible to be provided independently from each groove, can also be carried out with partition plate in a babinet
Divide and form each groove.
In the present invention, the biological treating tank 2 with dividing plate 26 and partition plate 23 can be separately provided to carry out draining
Processing.Fig. 4 is to represent one exemplary figure, and raw water is directly fed to biological treating tank 2 and is handled.
Embodiment
In the following, it is further elaborated with the present invention by enumerating embodiment and comparative example.
[1 (flow of embodiment：Fig. 1)]
In Fig. 1, using the first biological treating tank 1 (no sludge is sent back to) that capacity is 88L and capacity is 150L second
Biological treating tank 2, implements following processing to raw water (food manufacturing draining).Using the DO of the first biological treating tank 1 as 0.5mg/L,
The DO of second biological treating tank 2 is operated for 2~3mg/L.
In the first biological treating tank 1, square thermopnore carrier 12 of the length of side as 5mm is added using filling rate 5%, and the
Set in two biological treating tanks 2 and shaken by what slabstock polyurethane foam (length 100cm × width 30cm × thickness 1cm, 1) was formed
Dynamic bed carrier 22.In raw water CODCrFor 1250mg/L (BOD=800mg/L), the COD for the first biological treating tankCrVolume is born
Lotus is 8.6kg-CODCr/m3/ day, HRT for 3.5 it is small when, COD on the wholeCrVolumetric loading is 2kg-CODCr/m3/ day, HRT are
9.5 it is small when under conditions of operated.
By carrying out air-dispersing from air-dispersing spout 28, when the LV for making the upper up-flow in circulation flow path 27 is 10m/ small.Upper up-flow
When upper up-flow LV in road 24 is 5m/ small.
As a result, the SS of processing water is 30mg/L, with being taken out in the case of SRT=30 days from the second biological treating tank
The sludge conversion ratio of excess sludge into subtotaling be 0.15kg-SS/kg-CODCr。
[comparative example 1]
In addition to being not provided with dividing plate 26, circulation flow path 27 and air-dispersing spout 28, with embodiment 1 under identical conditions
Handled.
As a result, the SS of processing water is usually 30mg/L, still, the deposition of sludge is regularly produced at outlet flow passage
Suspend, the SS of processing water at this time rises to 100mg/L.With being taken out in the case of SRT=30 days from the second biological treating tank
The sludge conversion ratio of excess sludge into subtotaling be 0.18kg-SS/kg-CODCr。
[embodiment 2]
5mg/L cationic systems polymer coagulant (Crefarm (Network リ フ ァ ー system) is added in the second biological treating tank 2
PC728, Kurita Water Industries Ltd), in addition, handled with embodiment 1 under identical conditions.
As a result, the SS of processing water is 15mg/L, with being taken out in the case of SRT=30 days from the second biological treating tank
The sludge conversion ratio of excess sludge into subtotaling be 0.12kg-SS/kg-CODCr。
[embodiment 3]
The supply of raw water is repeated, stops operation, by raw water with TF=2 it is small when service time supplied, by original
Water is for giving TSThe dwell time of=100 minutes stops, and in addition, is handled with embodiment 1 under identical conditions.
As a result, the SS of processing water is 20mg/L, with being taken out in the case of SRT=30 days from the second biological treating tank
The sludge conversion ratio of excess sludge into subtotaling be 0.13kg-SS/kg-CODCr。
The present invention is described in detail using specific mode, still, can be into without departing from the purpose and scope of the invention
Row various changes, this will be apparent to those skilled in the art.
The application is proposed based on the Japanese patent application 2014-071668 that on March 31st, 2014 proposes, is led to herein
Cross the mode quoted and quote entire contents.
The explanation of reference numeral
1 first biological treating tank
2 second biological treating tanks
12 thermopnore carriers
23 partition plates
24 rising flow paths
26 dividing plates
27 circulation flow paths
28 air-dispersing spouts
29 biological treatment rooms
30 anaerobic grooves
Claims (10)
1. a kind of bioremediation of organic drainage, biological treatment is carried out in biological treating tank to organic drainage,
In order to carry out separation of solid and liquid to the sludge in biological treatment of water in the biological treating tank, go out in the draining of biological treating tank
Mouth side sets partition plate, the rising flow path of biological treatment room and the drain outlet side will be divided into the biological treating tank, makes to come from
In the biological treatment room biological treatment of water when LV0.5~5m/ is small to water flowing in a manner of upper in the rising flow path, by supernatant
The drain outlet on water from the rising flow path top is expelled to outside groove,
The bioremediation of the organic drainage is characterized in that, by with the partition plate abreast in the biological treatment room
Dividing plate is set, the circulation flow path that upper and lower part is all communicated in the biological treatment room is formed between the partition plate and dividing plate,
By the indoor a part of biological treatment of water of biological treatment by the LV of the LV biggers in than the rising flow path in a manner of to upstream
Circulation flow path of the water flowing between the partition plate and dividing plate.
2. a kind of bioremediation of organic drainage, gives birth to organic drainage in multistage biological treating tank is set to
Thing processing,
In the biological treating tank of the first order, the first life that scattered bacterium adds is generated by disperseing decomposition of the bacterium to organic matter
Thing handles water,
In the biological treating tank of most rear class, final biological treatment of water is generated,
In order to carry out separation of solid and liquid to the sludge in final biological treatment of water in the biological treating tank of most rear class, described last
The drain outlet side of the biological treating tank of level sets partition plate, and biological treatment room will be divided into the biological treating tank and the draining goes out
The rising flow path of mouthful side, by the biological treatment of water for coming from the biological treatment room to leading in a manner of upper when LV0.5~5m/ is small
The drain outlet on supernatant water from the rising flow path top is expelled to outside groove in the rising flow path by water,
The bioremediation of the organic drainage is characterized in that, by with the partition plate abreast in the biological treatment room
Dividing plate is set, the circulation flow path that upper and lower part is all communicated in the biological treatment room is formed between the partition plate and dividing plate,
By the indoor a part of biological treatment of water of biological treatment by the LV of the LV biggers in than the rising flow path in a manner of to upstream
Circulation flow path of the water flowing between the partition plate and dividing plate.
3. the bioremediation of organic drainage as claimed in claim 2, it is characterised in that in the biological treatment of most rear class
In groove, the biological film process of rocking bed is carried out, generates final biological treatment of water.
4. the bioremediation of organic drainage as claimed in claim 3, it is characterised in that rocking bed carrier is sheet
Foamed plastics.
5. the bioremediation of organic drainage according to any one of claims 1 to 4, it is characterised in that repeatedly into
The water flowing and water flowing of row raw water stop, and water flowing dwell time is set to the 1/20~1/4 of the water flowing time.
6. the bioremediation of organic drainage according to any one of claims 1 to 4, it is characterised in that by
It is aerated in the circulation flow path, upper up-flow is formed in the circulation flow path.
7. the bioremediation of organic drainage according to any one of claims 1 to 4, it is characterised in that by described in
The LV of upper up-flow in circulation flow path is set to 1.5~200 times of the LV of the rising flow path.
8. the bioremediation of organic drainage according to any one of claims 1 to 4, it is characterised in that last
Cationic system polymer coagulant is added in the biological treating tank of level.
9. a kind of biological treatment device of organic drainage, biological treatment is carried out in biological treating tank to organic drainage,
In order to carry out separation of solid and liquid to the sludge in biological treatment of water in the biological treating tank, go out in the draining of biological treating tank
Mouth side sets partition plate, the rising flow path of biological treatment room and the drain outlet side will be divided into the biological treating tank, will come from
In the biological treatment room biological treatment of water by water flowing in a manner of upper in the rising flow path, by supernatant water from the rising flow path
The drain outlet on top is expelled to outside groove,
The biological treatment device of the organic drainage is characterized in that, by with the partition plate abreast in the biological treatment room
Dividing plate is set, the circulation flow path that upper and lower part is all communicated in the biological treatment room is formed between the partition plate and dividing plate,
Water flowing mechanism is set, make the indoor a part of biological treatment of water of biological treatment with the LV than the LV biggers in the rising flow path with
To circulation flow path of the upper mode water flowing between the partition plate and dividing plate.
10. a kind of biological treatment device of organic drainage, carries out organic drainage in multistage biological treating tank is set to
Biological treatment,
In first order biological treating tank, by scattered decomposition of the bacterium to organic matter, the first biology that scattered bacterium adds is generated
Handle water,
In the biological treating tank of most rear class, final biological treatment of water is generated,
In order to carry out separation of solid and liquid to the sludge in final biological treatment of water in the biological treating tank of most rear class, described last
The drain outlet side of the biological treating tank of level sets partition plate, and biological treatment room will be divided into the biological treating tank and the draining goes out
The rising flow path of mouthful side, will come from the biological treatment of water of the biological treatment room by water flowing in a manner of upper in the upper up-flow
Road, the drain outlet on supernatant water from the rising flow path top is expelled to outside groove,
The biological treatment device of the organic drainage is characterized in that, by with the partition plate abreast in the biological treatment room
Dividing plate is set, the circulation flow path that upper and lower part is all communicated in the biological treatment room is formed between the partition plate and dividing plate,
Water flowing mechanism is set, make the indoor a part of biological treatment of water of biological treatment with the LV than the LV biggers in the rising flow path with
To circulation flow path of the upper mode water flowing between the partition plate and dividing plate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014071668A JP5786998B1 (en) | 2014-03-31 | 2014-03-31 | Biological treatment method and apparatus for organic wastewater |
| JP2014-071668 | 2014-03-31 | ||
| PCT/JP2015/052695 WO2015151571A1 (en) | 2014-03-31 | 2015-01-30 | Biological treatment method and apparatus for organic waste water |
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| CN106132881A CN106132881A (en) | 2016-11-16 |
| CN106132881B true CN106132881B (en) | 2018-04-17 |
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| CN201580015795.6A Active CN106132881B (en) | 2014-03-31 | 2015-01-30 | The bioremediation and device of organic drainage |
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| Country | Link |
|---|---|
| JP (1) | JP5786998B1 (en) |
| CN (1) | CN106132881B (en) |
| WO (1) | WO2015151571A1 (en) |
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| JP6366638B2 (en) * | 2016-05-23 | 2018-08-01 | 株式会社ダイキアクシス | Wastewater treatment equipment |
| JP6934358B2 (en) * | 2017-08-18 | 2021-09-15 | 水ｉｎｇ株式会社 | Organic wastewater treatment equipment and treatment method |
| JP2019048254A (en) * | 2017-09-08 | 2019-03-28 | オルガノ株式会社 | Method and device for treating organic wastewater |
| CN118206217A (en) * | 2019-11-21 | 2024-06-18 | 奥加诺株式会社 | Biological treatment device and biological treatment method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5982997A (en) * | 1982-11-05 | 1984-05-14 | Akira Nishigawara | Activated sludge treatment |
| JPH0217998A (en) * | 1988-07-04 | 1990-01-22 | Dia Furotsuku Kk | Method for improving settleability of activated sludge |
| JPH04305295A (en) * | 1991-04-03 | 1992-10-28 | Denka Consult & Eng Co Ltd | Biological treating method and device for organic acidic waste water |
| JP2003260479A (en) * | 2002-03-11 | 2003-09-16 | Fuji Clean Kogyo Kk | Septic tank and usage thereof |
| CN103193321A (en) * | 2013-05-03 | 2013-07-10 | 哈尔滨工业大学 | Sludge self-circulation dispersed sewage treatment device applicable to directly-discharged water body and method thereof |
| WO2013103124A1 (en) * | 2012-01-06 | 2013-07-11 | 栗田工業株式会社 | Biological treatment method and device for organic wastewater |
-
2014
- 2014-03-31 JP JP2014071668A patent/JP5786998B1/en active Active
-
2015
- 2015-01-30 CN CN201580015795.6A patent/CN106132881B/en active Active
- 2015-01-30 WO PCT/JP2015/052695 patent/WO2015151571A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5982997A (en) * | 1982-11-05 | 1984-05-14 | Akira Nishigawara | Activated sludge treatment |
| JPH0217998A (en) * | 1988-07-04 | 1990-01-22 | Dia Furotsuku Kk | Method for improving settleability of activated sludge |
| JPH04305295A (en) * | 1991-04-03 | 1992-10-28 | Denka Consult & Eng Co Ltd | Biological treating method and device for organic acidic waste water |
| JP2003260479A (en) * | 2002-03-11 | 2003-09-16 | Fuji Clean Kogyo Kk | Septic tank and usage thereof |
| WO2013103124A1 (en) * | 2012-01-06 | 2013-07-11 | 栗田工業株式会社 | Biological treatment method and device for organic wastewater |
| CN103193321A (en) * | 2013-05-03 | 2013-07-10 | 哈尔滨工业大学 | Sludge self-circulation dispersed sewage treatment device applicable to directly-discharged water body and method thereof |
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|---|---|
| CN106132881A (en) | 2016-11-16 |
| JP2015192938A (en) | 2015-11-05 |
| JP5786998B1 (en) | 2015-09-30 |
| WO2015151571A1 (en) | 2015-10-08 |
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