CN108623004A - Ozone comprehensively utilizes sewage disposal system and method - Google Patents
Ozone comprehensively utilizes sewage disposal system and method Download PDFInfo
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- CN108623004A CN108623004A CN201810744022.7A CN201810744022A CN108623004A CN 108623004 A CN108623004 A CN 108623004A CN 201810744022 A CN201810744022 A CN 201810744022A CN 108623004 A CN108623004 A CN 108623004A
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- ozone
- sludge
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- sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- 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
- C02F2001/007—Processes including a sedimentation step
Abstract
The invention discloses a kind of ozone comprehensive utilization sewage disposal systems and method, the system to include：Biological tank, including the pre- anoxic zone, anaerobic zone, anoxic zone and the aerobic zone that are sequentially connected, at least one upper arrangement sewage inlet in pre- anoxic zone, anaerobic zone and anoxic zone are disposed with outlet of sewer after processing on aerobic zone；Secondary settling tank has sewage inlet, water out and sludge outlet after processing；Ozone contact reaction device, has sludge inlet, ozone inlet, sludge outlet and an offgas outlet after ozone treatment, and at least one of sludge outlet and pre- anoxic zone, anaerobic zone and anoxic zone are connected after ozone treatment；Ozone breaker has gas inlet and oxygen outlet；There is micron aerator oxygen intake and micron order oxygen bubbles to export, and the outlet of micron order oxygen bubbles is connected with aerobic zone.The system realizes the minimizing of excess sludge, enhances the Nitrogen/Phosphorus Removal in biological tank, by the utilization to tail gas, enhances the resource recycling function of system.
Description
Technical field
The invention belongs to sewage treatment fields, specifically, the present invention relates to ozone comprehensive utilization sewage disposal system and
Method.
Background technology
Activated sludge process is used as most conventional, cost-effective sewage disposal technology, is made extensively in sewage treatment process
With, but will produce a large amount of excess sludges in its operational process.Untreated sludge brings secondary pollution after entering environment, to life
State environment and mankind's activity, which constitute, to be seriously threatened.Usually said sludge reduction is in the premise for ensureing wastewater treatment efficiency
Under, keep the biosolids amount that entire sewage disposal system is discharged outward minimum.It is even that mud decrement can be divided into metabolism solution from principle
Connection, strengthens recessive growth at microorganism predation, wherein to realize that recessive growth first has to crack sludge, the side of sludge disintegration
Method have very much, as high-temperature digestion, ultrasonication, microwave radiation, chlorine oxidation, ozone oxidation, the molten, alkali soluble of acid, thermosol and
Each method is used in combination.Ozone oxidation Sludge Reduction Technologies are a kind of Sludge Reduction Technologies being widely adopted in recent years,
Mud mixed liquid after its maximum feature is sludge dissolved efficiency height and aoxidizes is readily biodegradable.But existing ozone oxidation sludge
Decrement Technique is low to the utilization rate of ozone so that the technology energy consumption is higher.
Therefore, existing ozone oxidation Sludge Reduction Technologies are further improved.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention
One purpose is to propose that a kind of ozone comprehensively utilizes sewage disposal system and method.The system realizes ozone contact reaction device
Tail gas recycling, enhance the Nitrogen/Phosphorus Removal in biological tank, improve the utilization rate of carbon source in sewage.
In one aspect of the invention, the present invention proposes a kind of ozone comprehensive utilization sewage disposal system, according to this hair
Bright embodiment, the system include：
Biological tank, the interior biological tank includes pre- anoxic zone, anaerobic zone, anoxic zone and the aerobic zone being sequentially connected, described
At least one upper arrangement sewage inlet in pre- anoxic zone, the anaerobic zone and the anoxic zone is disposed with place on the aerobic zone
Outlet of sewer after reason；
Secondary settling tank, the secondary settling tank have sewage inlet, water out and sludge outlet after processing, and sewage enters after the processing
Mouth is connected with outlet of sewer after the processing；
Ozone contact reaction device, the ozone contact reaction utensil have sludge after sludge inlet, ozone inlet, ozone treatment
Outlet and offgas outlet, the sludge inlet be connected with the sludge outlet, after the ozone treatment sludge outlet with it is described pre-
At least one of anoxic zone, the anaerobic zone and the anoxic zone are connected；
Ozone breaker, the ozone breaker have gas inlet and oxygen outlet, the gas inlet and the tail
Gas outlet is connected；
There is oxygen intake and micron order oxygen bubbles to export for micron aerator, the micron aerator, the oxygen
Entrance is connected with the oxygen outlet, and the micron order oxygen bubbles outlet is connected with the aerobic zone.
Ozone according to the ... of the embodiment of the present invention comprehensively utilizes sewage disposal system, by the way that pre- anoxic zone is arranged, reflux is dirty
The NO carried in mudXDenitrification is carried out, sludge reflux is reduced to releasing the influence of phosphorus process in anaerobic zone, enhances biological tank
Nitrogen/Phosphorus Removal；By the way that in the upper arrangement sewage inlet at least one of pre- anoxic zone, anaerobic zone and anoxic zone, dirt can be improved
The utilization rate of carbon source in water；Sewage can reach III class water quality of quasi- earth's surface after secondary settling tank is handled after processing；The sludge isolated exists
It is come into full contact with ozone in ozone contact reaction device, ozone can promote cell dissolution as cell lytic agent, increase declining for cell
The rate of deceleration strengthens the recessive growth of bacterium to make sludge yield reduce, and sludge is bigger by oxidation ratio, then mud decrement is got over
It is more, while ozone can be the oxidation operation in cytoplasm, sludge obtains dirt after ozone treatment after ozone decomposed and mineralising
Mud, reflowable at least one of pre- anoxic zone, anaerobic zone and the anoxic zone in biological tank of sludge after the ozone treatment are it
Interior denitrifying bacterium, polyP bacteria provide organic carbon source.And the tail gas obtained by ozone contact reaction device can be destroyed through ozone breaker
Oxygen is obtained, which can be obtained micron order oxygen bubbles through micron aerator again, and the micron order oxygen bubbles is sent to aerobic
Area is remarkably improved the mass-transfer efficiency of oxygen in aerobic zone, meets the needs of system is to oxygen, improves ozone contact reaction device tail gas
Recovery utilization rate, significantly reduce aeration energy consumption.The system realizes the minimizing of excess sludge as a result, and by returning
Sludge enhances the Nitrogen/Phosphorus Removal in biological tank, while connecing by using ozone as supplementary carbon source after using ozone treatment
Aeration air source of the tail gas of reactor as biological tank is touched, the resource recycling function of system is enhanced.
In addition, ozone comprehensive utilization sewage disposal system according to the above embodiment of the present invention can also have following add
Technical characteristic：
In some embodiments of the invention, above-mentioned ozone comprehensive utilization sewage disposal system further comprises：Centrifugation point
From device, the whizzer has sludge import, inorganic matter outlet and organic outlet, the sludge import and the sludge
Outlet is connected, and the organic outlet is connected with the sludge inlet.Be conducive to remove the inorganic matter in sludge as a result, carry
The treatment effeciency of high ozone contact reactor reduces the processing cost of whole system.
In some embodiments of the invention, above-mentioned ozone comprehensive utilization sewage disposal system further comprises：Booster pump,
The booster pump is connected with the ozone breaker and the micron aerator respectively.The pressure that oxygen can be improved as a result, into
And improve the treatment effeciency of micron aerator.
In some embodiments of the invention, institute is arranged on the pre- anoxic zone, the anaerobic zone and the anoxic zone
State sewage inlet.It can further improve the utilization rate of carbon source in sewage as a result,.
In another aspect of the invention, the present invention proposes a kind of using above system implementation ozone comprehensive utilization sewage
The method of processing, this method include：
(1) sewage is supplied in the pre- anoxic zone, the anaerobic zone and the anoxic zone into the biological tank
At least one, so as to sewage after being handled；
(2) sewage after the processing is supplied to the secondary settling tank and carries out sedimentation separation processing, to obtain water and sludge；
(3) sludge is supplied to the ozone contact reaction device and is reacted with ozone, to obtain ozone treatment
Sludge and tail gas afterwards, and sludge after the ozone treatment is supplied to the pre- anoxic zone, the anaerobic zone and the anoxic zone
At least one of；
(4) tail gas is supplied to the ozone breaker and carries out ozone layer destroying, to obtain oxygen；
(5) oxygen is supplied to the micron aerator and carries out micron aeration, to obtain a micron oxygen bubbles, and
The micron oxygen bubbles is back to the aerobic zone.
Ozone according to the ... of the embodiment of the present invention comprehensively utilizes sewage water treatment method, by the way that pre- anoxic zone is arranged, reflux is dirty
The NO carried in mudXDenitrification is carried out, sludge reflux is reduced to releasing the influence of phosphorus process in anaerobic zone, enhances biological tank
Nitrogen/Phosphorus Removal；By the way that in the upper arrangement sewage inlet at least one of pre- anoxic zone, anaerobic zone and anoxic zone, dirt can be improved
The utilization rate of carbon source in water；Sewage can reach III class water quality of quasi- earth's surface after secondary settling tank is handled after processing；The sludge isolated exists
It is come into full contact with ozone in ozone contact reaction device, ozone can promote cell dissolution as cell lytic agent, increase declining for cell
The rate of deceleration strengthens the recessive growth of bacterium to make sludge yield reduce, and sludge is bigger by oxidation ratio, then mud decrement is got over
It is more, while ozone can be the oxidation operation in cytoplasm, sludge obtains dirt after ozone treatment after ozone decomposed and mineralising
Mud, reflowable at least one of pre- anoxic zone, anaerobic zone and the anoxic zone in biological tank of sludge after the ozone treatment are it
Interior denitrifying bacterium, polyP bacteria provide organic carbon source.And the tail gas obtained by ozone contact reaction device can be destroyed through ozone breaker
Oxygen is obtained, which can be obtained micron order oxygen bubbles through micron aerator again, and the micron order oxygen bubbles is sent to aerobic
Area is remarkably improved the mass-transfer efficiency of oxygen in aerobic zone, meets the needs of system is to oxygen, improves ozone contact reaction device tail gas
Recovery utilization rate, significantly reduce aeration energy consumption.The method achieve the minimizings of excess sludge as a result, and by returning
Sludge enhances the Nitrogen/Phosphorus Removal in biological tank, while connecing by using ozone as supplementary carbon source after using ozone treatment
Aeration air source of the tail gas of reactor as biological tank is touched, the resource recycling function of method is enhanced.
In addition, ozone comprehensive utilization sewage water treatment method according to the above embodiment of the present invention can also have following add
Technical characteristic：
In some embodiments of the invention, it when inorganic content is higher than 70% in the sludge, is supplied by the sludge
Further comprise before to the ozone contact reaction device：The sludge is supplied in advance and is carried out into the whizzer
Separation, so as to isolated inorganic matter and organic matter, and the organic matter is supplied to the ozone contact generator.As a result,
Be conducive to remove the inorganic matter in sludge, improve the treatment effeciency of ozone contact reaction device, reduce being processed into for entire technique
This.
In some embodiments of the invention, in step (1), the sewage is supplied into the biological tank described in
Pre- anoxic zone, the anaerobic zone and the anoxic zone.The pressure of oxygen can be improved as a result, and then improve micron aerator
Treatment effeciency.
In some embodiments of the invention, in step (3), a concentration of 150~200mg/L of the ozone.As a result,
Be conducive to improve the reaction rate of sludge, while reducing the energy consumption of ozone contact reaction device.
In some embodiments of the invention, in step (3), the ozone is with the catalytic temperature of the sludge
15~25 DEG C.It can further improve the treatment effeciency of sludge as a result,.
In some embodiments of the invention, in step (5), the temperature of the micron aeration process is 15~25 DEG C,
Pressure is 0.5-1MPa.Be conducive to improve the rate of micron aeration as a result,.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 is ozone comprehensive utilization sewage disposal system structural schematic diagram according to an embodiment of the invention；
Fig. 2 is to comprehensively utilize sewage disposal system structural schematic diagram according to the ozone of further embodiment of the present invention；
Fig. 3 is to comprehensively utilize sewage disposal system structural schematic diagram according to the ozone of another embodiment of the invention；
Fig. 4 is ozone comprehensive utilization sewage water treatment method flow diagram according to an embodiment of the invention；
Fig. 5 is to comprehensively utilize sewage water treatment method flow diagram according to the ozone of further embodiment of the present invention.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In one aspect of the invention, the present invention proposes a kind of ozone comprehensive utilization sewage disposal system, according to this hair
Bright embodiment, with reference to figure 1, which includes：Biological tank 100, secondary settling tank 200, ozone contact reaction device 300, ozone layer destroying
Device 400 and micron aerator 500.
According to an embodiment of the invention, in biological tank 100 include the pre- anoxic zone 11, anaerobic zone 12, anoxic being sequentially connected
Area 13 and aerobic zone 14, at least one upper arrangement sewage inlet 101 in pre- anoxic zone 11, anaerobic zone 12 and anoxic zone 13 are aerobic
It is disposed with outlet of sewer 102 after handling in area 14, and is suitable for sewage through in pre- anoxic zone, anaerobic zone, anoxic zone and aerobic zone
Microbial bacterial processing, so as to sewage after being handled.Specifically, in pre- anoxic zone, the NO that is carried in returned sludgexAnti-
Nitrobacteria effect is lower to carry out denitrification, reduces returned sludge to releasing the influence of phosphorus process in anaerobic zone；In anaerobic zone, polyP bacteria
Volatile fatty acid in sewage is converted to poly- β hydroxybutyric acids (PHB) and stored by the energy generated using intracellular glycolysis
In vivo, while in the process phosphate is discharged；In anoxic zone, based on the bacteriums such as denitrogenation micrococcus and denitrifying pseudomonas
Denitrifying bacteria using the carbon source in sewage and returned sludge as the energy, nitrate-nitrogen reduction is discharged into air as nitrogen
In；In aerobic zone, the organic matter in sewage is degraded into the required energy of life activity by the own metabolism of microorganism
Amount, and the organic nitrogen in sewage transforms into ammonia nitrogen by amonifying bacteria, further transforms into nitrous state by ammonia oxidizing bacteria
Nitrogen, and nitrate nitrogen is further transformed by nitrobacteria, meanwhile, polyP bacteria carries out growth generation using the PHB of storage in vivo
It thanks, and the phosphate in excessive consumption sewage forms poly- phosphorus, forms rich phosphorus activated sludge, and reach with the discharge of excess sludge
The purpose of dephosphorization.
According to one embodiment of present invention, dirt can be disposed on pre- anoxic zone 11, anaerobic zone 12 and anoxic zone 13
Water inlet 101.During sewage can enter biological tank from pre- anoxic zone, anaerobic zone and anoxic zone as a result, meet microorganism in biological tank
Demand to carbon source improves the utilization rate of carbon source in sewage.
According to an embodiment of the invention, secondary settling tank 200 has sewage inlet 201, water out 202 and sludge outlet after processing
203, sewage inlet 201 is connected with outlet of sewer 102 after processing after processing, and is carried out at sedimentation separation suitable for sewage after handling
Reason, to obtain water and sludge.Inventor has found that sewage can reach III class water quality of quasi- earth's surface after secondary settling tank is handled after processing,
The sludge of gained includes organic matter and inorganic matter.
According to an embodiment of the invention, ozone contact reaction device 300 has sludge inlet 301, ozone inlet 302, ozone
Sludge outlet 303 and offgas outlet 304, sludge inlet 301 are connected with sludge outlet 203 after processing, and sludge goes out after ozone treatment
Mouthfuls 303 are connected at least one of pre- anoxic zone 11, anaerobic zone 12 and anoxic zone 13, and suitable for by sludge and ozone generation instead
It answers, to obtain sludge and tail gas after ozone treatment, and sludge after ozone treatment is supplied to pre- anoxic zone, anaerobic zone and anoxic
At least one of area.Inventor has found that the sludge isolated comes into full contact in ozone contact reaction device with ozone, and ozone is made
For cell lytic agent, cell dissolution can be promoted, increase the rate of decay of cell, strengthen the recessive growth of bacterium to make sludge produce
Amount reduces, and sludge is bigger by oxidation ratio, then mud decrement is more, while ozone can be dirty the oxidation operation in cytoplasm
Mud obtains sludge after ozone treatment after ozone decomposed and mineralising, and sludge is reflowable to pre- in biological tank after the ozone treatment
At least one of anoxic zone, anaerobic zone and anoxic zone provide organic carbon source for denitrifying bacterium, the polyP bacteria in it.
According to one embodiment of present invention, the concentration of ozone can be 150~200mg/L.Inventor has found that ozone is thrown
Enriching spends the low touch opportunity for reducing Board Lot sludge and wherein microbial cell and ozone, there is volatility in sludge
The fall off rate of machine object (MLVSS) is decreased obviously, and the burst size for the organic carbon source that can be utilized by biochemistry is insufficient；Ozone adds concentration
When excessively high, the fall off rate of MLVSS is held essentially constant in sludge, but increases the operating cost of this method.
According to still a further embodiment, ozone and the catalytic temperature of sludge can be 15~25 DEG C.Invention
People has found that the excessively high decomposition that can accelerate ozone of temperature influences the concentration of ozone and the yield of organic carbon source.
According to an embodiment of the invention, ozone breaker 400 has gas inlet 401 and oxygen outlet 402, gas inlet
401 are connected with offgas outlet 304, and suitable for tail gas is carried out ozone layer destroying, to obtain oxygen.Inventor's discovery, ozone tail
Gas is delivered in ozone breaker and is contacted with catalyst, in catalyst surface fast decoupled, to be converted to oxygen.
According to an embodiment of the invention, there is micron aerator 500 oxygen intake 501 and micron order oxygen bubbles to export
502, oxygen intake 501 is connected with oxygen outlet 402, and the outlet of micron order oxygen bubbles 502 is connected with aerobic zone 14, and by oxygen into
Row micron is aerated, and to obtain a micron oxygen bubbles, and micron oxygen bubbles is back to aerobic zone.Inventor's discovery, oxygen self-priming
And enter, gas and the sewage in biological tank aerobic zone of sucking, which enter in micron aerator, to be mixed, and the sewage of reflux is through being overpressurized
After rotation status is presented.Gas is mixed and is dissolved with pressurization sewage in the case where disturbing strongly, at this time a part of gas
It being dissolved in sewage, another part is wrapped with micro air bubble free state, is mixed in water, finally, the mixing of gas and sewage
Object is discharged through jet stream, forms microbubble.By sending micron order oxygen bubbles to aerobic zone, it is remarkably improved oxygen in aerobic zone
Mass-transfer efficiency, meet the needs of heterotrophic microorganisms such as the autotrophic microbes such as nitrobacteria and polyP bacteria are to oxygen in system, carry
The recovery utilization rate of high ozone contact reactor tail gas, reduces aeration energy consumption.
According to one embodiment of present invention, the temperature of micron aeration process can be 15~25 DEG C, and operating pressure is
0.5-1MPa.Inventor has found that temperature is excessively high to reduce gas bubble degree, accelerates gas overflowing, reduces connecing for bubble and sewage
Touch the time.When operating pressure is too low, the speed that bubble reduces is slower, and the specific surface area of bubble is smaller, influences mass-transfer efficiency.Upper
Under conditions of stating micron aeration, the diameter of the micron order oxygen bubbles of gained is less than 40 μm, and bobble rise velocity is about 1mm/min,
Long with the time of contact of sewage in biological tank, in conjunction with specific surface area, solvability is 10~200,000 times of general air bubble.
Ozone according to the ... of the embodiment of the present invention comprehensively utilizes sewage disposal system, by the way that pre- anoxic zone is arranged, reflux is dirty
The NO carried in mudXDenitrification is carried out, sludge reflux is reduced to releasing the influence of phosphorus process in anaerobic zone, enhances biological tank
Nitrogen/Phosphorus Removal；By the way that in the upper arrangement sewage inlet at least one of pre- anoxic zone, anaerobic zone and anoxic zone, dirt can be improved
The utilization rate of carbon source in water；Sewage can reach III class water quality of quasi- earth's surface after secondary settling tank is handled after processing；The sludge isolated exists
It is come into full contact with ozone in ozone contact reaction device, ozone can promote cell dissolution as cell lytic agent, increase declining for cell
The rate of deceleration strengthens the recessive growth of bacterium to make sludge yield reduce, and sludge is bigger by oxidation ratio, then mud decrement is got over
It is more, while ozone can be the oxidation operation in cytoplasm, sludge obtains dirt after ozone treatment after ozone decomposed and mineralising
Mud, reflowable at least one of pre- anoxic zone, anaerobic zone and the anoxic zone in biological tank of sludge after the ozone treatment are it
Interior denitrifying bacterium, polyP bacteria provide organic carbon source.And the tail gas obtained by ozone contact reaction device can be destroyed through ozone breaker
Oxygen is obtained, which can be obtained micron order oxygen bubbles through micron aerator again, and the micron order oxygen bubbles is sent to aerobic
Area is remarkably improved the mass-transfer efficiency of oxygen in aerobic zone, meets the needs of system is to oxygen, improves ozone contact reaction device tail gas
Recovery utilization rate, significantly reduce aeration energy consumption.The system realizes the minimizing of excess sludge as a result, and by returning
Sludge enhances the Nitrogen/Phosphorus Removal in biological tank, while connecing by using ozone as supplementary carbon source after using ozone treatment
Aeration air source of the tail gas of reactor as biological tank is touched, the resource recycling function of system is enhanced.
According to an embodiment of the invention, with reference to figure 2, above-mentioned ozone comprehensive utilization sewage disposal system further comprises：From
Centrifugal separator 600.
According to an embodiment of the invention, whizzer 600 has sludge import 601, inorganic matter outlet 602 and organic matter
Outlet 603, sludge import 601 is connected with sludge outlet 203, and organic outlet 603 is connected with sludge inlet 301, and suitable for dirt
When inorganic content is higher than 70% in mud, sludge is detached in advance before supplying sludge to ozone contact reaction device,
So as to isolated inorganic matter and organic matter, and organic matter is supplied to ozone contact generator.Inventor has found, by by nothing
Sludge of the machine object content higher than 70% with ozone contact reaction before send into whizzer, according to organic matter in sludge and
The proportion of inorganic matter is different, can effectively by sludge organic matter and inorganic matter separate, the inorganic matter of gained can be direct
Outer row, and the organic matter of gained can be sent into ozone contact generator and ozonization.It can reduce as a result, and be delivered to ozone contact
The amount of sludge in generator avoids the repetitive cycling of inorganic matter to the energy expenditure of entire technique, improves ozone contact reaction device
Treatment effeciency, reduce the processing cost of whole system.
According to an embodiment of the invention, with reference to figure 3, above-mentioned ozone comprehensive utilization sewage disposal system further comprises：Increase
Press pump 700.
According to an embodiment of the invention, booster pump 700 is connected with ozone breaker 400 and micron aerator 500 respectively,
And suitable for supplying the oxygen that ozone breaker generates to micron aerator.Inventor's discovery, the oxygen that ozone breaker generates
Gas is after booster pump, pressure rise, is remarkably improved the treatment effeciency of follow-up micron aerator.
In another aspect of the invention, the present invention proposes a kind of using above system implementation ozone comprehensive utilization sewage
The method of processing, with reference to figure 4, this method includes：
S100：Sewage is supplied at least one of pre- anoxic zone, anaerobic zone and anoxic zone into biological tank
In the step, sewage is supplied at least one of pre- anoxic zone, anaerobic zone and anoxic zone into biological tank, with
Just sewage after being handled.Specifically, in pre- anoxic zone, the NO that is carried in returned sludgeXIt is carried out in the case where denitrifying bacteria acts on
Denitrification reduces returned sludge to releasing the influence of phosphorus process in anaerobic zone；In anaerobic zone, polyP bacteria utilizes intracellular glycolysis
Volatile fatty acid in sewage is converted to poly- β hydroxybutyric acids (PHB) storage in vivo by the energy of generation, while in the process
Discharge phosphate；In anoxic zone, the denitrifying bacteria based on the bacteriums such as denitrogenation micrococcus and denitrifying pseudomonas is with sewage
With the carbon source in returned sludge as the energy, nitrate-nitrogen reduction is discharged into the atmosphere as nitrogen；In aerobic zone, in sewage
Organic matter is degraded into the required energy of life activity by the own metabolism of microorganism, and the organic nitrogen in sewage is logical
It crosses amonifying bacteria and transforms into ammonia nitrogen, nitrite nitrogen is further transformed by ammonia oxidizing bacteria, and further by nitrobacteria
Nitrate nitrogen is transformed into, meanwhile, polyP bacteria carries out growth metabolism using the PHB of storage in vivo, and in excessive consumption sewage
Phosphate forms poly- phosphorus, forms rich phosphorus activated sludge, and achieve the purpose that dephosphorization with the discharge of excess sludge.
According to one embodiment of present invention, sewage can be supplied to the pre- anoxic zone into biological tank, anaerobic zone and lacked
Oxygen area.During sewage can enter biological tank from pre- anoxic zone, anaerobic zone and anoxic zone as a result, meet in biological tank microorganism to carbon
The demand in source improves the utilization rate of carbon source in sewage.
S200：Sewage after processing is supplied to secondary settling tank and carries out sedimentation separation processing
In the step, sewage after processing is supplied to secondary settling tank and carries out sedimentation separation processing, to obtain water and sludge.Hair
A person of good sense has found that sewage can reach III class water quality of quasi- earth's surface after secondary settling tank is handled after processing, and the sludge of gained includes organic matter
And inorganic matter.
S300：Sludge is supplied to ozone contact reaction device and is reacted with ozone
In the step, sludge is supplied to ozone contact reaction device and is reacted with ozone, after obtaining ozone treatment
At least one of sludge and tail gas, and sludge after ozone treatment supplied to pre- anoxic zone, anaerobic zone and anoxic zone.Inventor
It was found that the sludge isolated comes into full contact in ozone contact reaction device with ozone, ozone can promote thin as cell lytic agent
Cellular lysis increases the rate of decay of cell, strengthens the recessive growth of bacterium to make sludge yield reduce, sludge is by oxidation ratio
Bigger, then mud decrement is more, at the same ozone can the oxidation operation in cytoplasm, sludge after ozone decomposed and mineralising,
Obtain sludge after ozone treatment, reflowable pre- anoxic zone, anaerobic zone and the anoxic zone in biological tank of sludge after the ozone treatment
At least one of, provide organic carbon source for denitrifying bacterium, the polyP bacteria in it.
According to one embodiment of present invention, the concentration of ozone can be 150~200mg/L.Inventor has found that ozone is thrown
Enriching spends the low touch opportunity for reducing Board Lot sludge cell and ozone, volatile organic matter (MLVSS) in sludge
Fall off rate be decreased obviously, the burst size of organic carbon source that can be utilized by biochemistry is insufficient；When ozone adds excessive concentration, sludge
The fall off rate of middle MLVSS is held essentially constant, but increases the operating cost of this method.
According to still a further embodiment, ozone and the catalytic temperature of sludge can be 15~25 DEG C.(invention
People has found that the excessively high decomposition that can accelerate ozone of temperature influences the concentration of ozone and the yield of organic carbon source.
S400：Tail gas is supplied to ozone breaker and carries out ozone layer destroying
In the step, tail gas is supplied to ozone breaker and carries out ozone layer destroying, to obtain oxygen.Inventor's discovery,
Ozone tail gas is delivered in ozone breaker and is contacted with catalyst, in catalyst surface fast decoupled, to be converted to oxygen.
S500：Oxygen is supplied to micron aerator and carries out micron aeration
In the step, oxygen is supplied to micron aerator and carries out micron aeration, to obtain a micron oxygen bubbles, and will
Micron oxygen bubbles is back to aerobic zone.Inventor has found, oxygen self-priming and enter, the gas of sucking and sewage in biological tank aerobic zone
It is mixed in into micron aerator, rotation status is presented in the sewage of reflux after being overpressurized.Gas is disturbing strongly
In the case of mix and dissolve with pressurization sewage, a part of gas is dissolved in water at this time, and another part is dissociated shape with micro air bubble
State is wrapped, is mixed in water, and finally, the mixture of gas and sewage is discharged through jet stream, forms microbubble.By by micron
Grade oxygen bubbles is sent to aerobic zone, is remarkably improved the mass-transfer efficiency of oxygen in aerobic zone, it is micro- to meet the autotrophys such as nitrobacteria in system
The demand of the heterotrophic microorganisms to oxygen such as biology and polyP bacteria, improves the recovery utilization rate of ozone contact reaction device tail gas, reduces
Aeration energy consumption.
According to one embodiment of present invention, the temperature of micron aeration process can be 15~25 DEG C, and operating pressure is
0.5-1MPa.Inventor has found that temperature is excessively high to reduce gas bubble degree, accelerates gas overflowing, reduces connecing for bubble and sewage
Touch the time.When operating pressure is too low, the speed that bubble reduces is slower, and the specific surface area of bubble is smaller, influences mass-transfer efficiency.Upper
Under conditions of stating micron aeration, the diameter of the micron order oxygen bubbles of gained is less than 40 μm, and bobble rise velocity is about 1mm/min,
Long with the time of contact of sewage in biological tank, in conjunction with specific surface area, solvability is 10~200,000 times of general air bubble.
Ozone according to the ... of the embodiment of the present invention comprehensively utilizes sewage water treatment method, by the way that pre- anoxic zone is arranged, reflux is dirty
The NO carried in mudXDenitrification is carried out, sludge reflux is reduced to releasing the influence of phosphorus process in anaerobic zone, enhances biological tank
Nitrogen/Phosphorus Removal；By the way that in the upper arrangement sewage inlet at least one of pre- anoxic zone, anaerobic zone and anoxic zone, dirt can be improved
The utilization rate of carbon source in water；Sewage can reach III class water quality of quasi- earth's surface after secondary settling tank is handled after processing；The sludge isolated exists
It is come into full contact with ozone in ozone contact reaction device, ozone can promote cell dissolution as cell lytic agent, increase declining for cell
The rate of deceleration strengthens the recessive growth of bacterium to make sludge yield reduce, and sludge is bigger by oxidation ratio, then mud decrement is got over
It is more, while ozone can be the oxidation operation in cytoplasm, sludge obtains dirt after ozone treatment after ozone decomposed and mineralising
Mud, reflowable at least one of pre- anoxic zone, anaerobic zone and the anoxic zone in biological tank of sludge after the ozone treatment are it
Interior denitrifying bacterium, polyP bacteria provide organic carbon source.And the tail gas obtained by ozone contact reaction device can be destroyed through ozone breaker
Oxygen is obtained, which can be obtained micron order oxygen bubbles through micron aerator again, and the micron order oxygen bubbles is sent to aerobic
Area is remarkably improved the mass-transfer efficiency of oxygen in aerobic zone, meets the needs of system is to oxygen, improves ozone contact reaction device tail gas
Recovery utilization rate, significantly reduce aeration energy consumption.The method achieve the minimizings of excess sludge as a result, and by returning
Sludge enhances the Nitrogen/Phosphorus Removal in biological tank, while connecing by using ozone as supplementary carbon source after using ozone treatment
Aeration air source of the tail gas of reactor as biological tank is touched, the resource recycling function of method is enhanced.
According to an embodiment of the invention, with reference to figure 5, when inorganic content is higher than 70% in sludge, by sludge supply to
Before ozone contact reaction device, above-mentioned ozone comprehensive utilization sewage water treatment method further comprises：
S600：Sludge is supplied in advance and is detached into whizzer
In the step, when in sludge inorganic content be higher than 70% when, by sludge supply to ozone contact reaction device it
Before, sludge is supplied detached into whizzer in advance, so as to isolated inorganic matter and organic matter, and by organic matter
It supplies to ozone contact generator.Inventor has found, by the sludge by inorganic content higher than 70% anti-with ozone contact
Should before send into whizzer, it is different according to the proportion of organic matter in sludge and inorganic matter, can effectively will be in sludge
Organic matter and inorganic matter separate, and the inorganic matter of gained directly outer can be arranged, and the organic matter of gained can send to ozone contact and send out
In raw device with ozonization.The amount for being delivered to sludge in ozone contact generator can be reduced as a result, and the repetition of inorganic matter is avoided to follow
Ring improves the treatment effeciency of ozone contact reaction device, reduces the processing cost of whole system to the energy expenditure of entire technique.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of ozone comprehensively utilizes sewage disposal system, which is characterized in that including：
Biological tank, the interior biological tank includes pre- anoxic zone, anaerobic zone, anoxic zone and the aerobic zone being sequentially connected, described pre- scarce
At least one upper arrangement sewage inlet in oxygen area, the anaerobic zone and the anoxic zone, after being disposed with processing on the aerobic zone
Outlet of sewer；
Secondary settling tank, the secondary settling tank have processing after sewage inlet, water out and sludge outlet, after the processing sewage inlet with
Outlet of sewer is connected after the processing；
Ozone contact reaction device, the ozone contact reaction utensil have sludge outlet after sludge inlet, ozone inlet, ozone treatment
And offgas outlet, the sludge inlet are connected with the sludge outlet, sludge outlet and the pre- anoxic after the ozone treatment
At least one of area, the anaerobic zone and the anoxic zone are connected；
There is gas inlet and oxygen outlet, the gas inlet to go out with the tail gas for ozone breaker, the ozone breaker
Mouth is connected；
There is oxygen intake and micron order oxygen bubbles to export for micron aerator, the micron aerator, the oxygen intake
It is connected with the oxygen outlet, the micron order oxygen bubbles outlet is connected with the aerobic zone.
2. system according to claim 1, which is characterized in that further comprise：
Whizzer, the whizzer have sludge import, inorganic matter outlet and organic outlet, the sludge import
It is connected with the sludge outlet, the organic outlet is connected with the sludge inlet.
3. system according to claim 1 or 2, which is characterized in that further comprise：
Booster pump, the booster pump are connected with the ozone breaker and the micron aerator respectively.
4. system according to claim 3, which is characterized in that the pre- anoxic zone, the anaerobic zone and the anoxic zone
On arrange the sewage inlet.
5. a kind of system using described in any one of claim 1-4 implements the method that ozone comprehensively utilizes sewage disposal,
It is characterized in that, including：
(1) sewage is supplied in the pre- anoxic zone, the anaerobic zone and the anoxic zone into the biological tank at least
One of, so as to sewage after being handled；
(2) sewage after the processing is supplied to the secondary settling tank and carries out sedimentation separation processing, to obtain water and sludge；
(3) sludge is supplied to the ozone contact reaction device and is reacted with ozone, to obtain dirt after ozone treatment
Mud and tail gas, and sludge after the ozone treatment is supplied into the pre- anoxic zone, the anaerobic zone and the anoxic zone
At least one；
(4) tail gas is supplied to the ozone breaker and carries out ozone layer destroying, to obtain oxygen；
(5) oxygen is supplied to the micron aerator and carries out micron aeration, to obtain a micron oxygen bubbles, and by institute
It states a micron oxygen bubbles and is back to the aerobic zone.
6. according to the method described in claim 5, it is characterized in that, when inorganic content is higher than 70% in the sludge, inciting somebody to action
The sludge further comprises before supplying to the ozone contact reaction device：The sludge is supplied to the centrifugation point in advance
From being detached in device, so as to isolated inorganic matter and organic matter, and the organic matter is supplied to the ozone contact and is sent out
Raw device.
7. method according to claim 5 or 6, which is characterized in that in step (1), the sewage is supplied to described
The pre- anoxic zone, the anaerobic zone and the anoxic zone in biological tank.
8. the method according to the description of claim 7 is characterized in that in step (3), the ozone a concentration of 150~
200mg/L。
9. according to the method described in claim 8, it is characterized in that, in step (3), the ozone contacts instead with the sludge
It is 15~25 DEG C to answer temperature.
10. the method according to the description of claim 7 is characterized in that in step (5), the temperature of the micron aeration process
It is 15~25 DEG C, pressure 0.5-1MPa.
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