A kind of efficient denitrification biological treatment device
Technical field
The utility model is used for technical field of waste water processing, more particularly to a kind of efficient denitrification biological treatment device.
Background technique
Currently, denitrogenation technology mainly uses the nitrogen source in bio-denitrification technology Treating Municipal Sewage and industrial wastewater to pollute.
Traditional biological denitrificaion includes two different phases of biological nitration and denitrification, and nitrifying process needs to provide sufficient aeration for ammonia nitrogen
Oxidation, denitrification process needs then add carbon source under anoxic conditions, and the reducing nitrate radical that nitrification is generated generates nitrogen, thoroughly
The nitrogen source pollution in water removal is gone, this not only needs to consume mass energy, but also it is higher to run processing cost.Traditional biological denitrificaion
Technology needs to consume mass energy, but also there are biomass (especially nitrobacteria) to be easy to run off, system footprint area is big, resists
The problems such as impact capacity is weak, surplus sludge volume is more.
Traditional denitrogenation technology be built upon three steps such as organic nitrogen aminating reaction-nitrifying process-denitrification process into
Row denitrogenation, the aerobic three phases of anaerobism-anoxic-are needed, while needing flow back by the mixed liquor of aerobic tank scarce
Oxygen pond carries out denitrification, and reflux ratio becomes one of restriction denitrification effect factor at this time;The strains such as nitrifier, denitrifying bacterium
Belong to the long microorganism of generation growth cycle, this quasi-microorganism is generally difficult to be present in water body in the form of zoogloea, warp
It is often free in sewage disposal system, how such strain is retained, how to improve its concentration also becomes raising nitrification, denitrification
One of restraining factors of effect.Therefore, it studies and the efficient biological denitrificaion water treatment technology of application is for high ammonia-nitrogen wastewater industry
Development it is most important.
Utility model content
The purpose of this utility model is to provide a kind of efficient denitrification biological treatment devices.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of efficient denitrification biological treatment device,
Including the initial reaction section being arranged along water process direction and go deep into conversion zone, the initial reaction section includes setting along water process direction
Anaerobic pond, the first anoxic pond and the first aerobic tank set, the conversion zone that gos deep into includes lacking along the second of the setting of water process direction
Oxygen pond and the second aerobic tank, the anaerobic pond are equipped with pulse water distribution device, and the pulse water distribution device includes being located on anaerobic pond
The Impulsive tank of side and the pulse water distributing device being located in anaerobic pond, Impulsive tank are connect by pulse tube with pulse water distributing device, the arteries and veins
Tank is rushed equipped with water inlet pipe, water inlet pipe is equipped with elevator pump.
It is further used as the improvement of technical solutions of the utility model, the top of the pulse tube stretches in Impulsive tank, arteries and veins
The drainage hood for being equipped with and being covered on the outside of the pulse tube in tank is rushed, forms the bottom end by drainage hood between the drainage hood and pulse tube
Mouth leads to the siphon passage of the top nozzle of pulse tube, is additionally provided with air entraining pipe in Impulsive tank, the air entraining pipe is on the top of drainage hood
Inside bore is formed on the inside of portion, forms external nozzle in the outside of drainage hood, the external nozzle is higher than inside bore.
It is further used as the improvement of technical solutions of the utility model, the water inlet on Impulsive tank of water inlet pipe is higher than pulse tube
Top nozzle.
It is further used as the improvement of technical solutions of the utility model, Impulsive tank apical lateral is equipped with exhaust pipe, exhaust pipe
Nozzle is equipped with exhaust valve, and the exhaust pipe, which has, is laterally extended section, and the section that is laterally extended is described by threeway connection return pipe
Return pipe accesses the pulse tube below Impulsive tank.
It is further used as the improvement of technical solutions of the utility model, the pulse water distributing device includes pulse water distribution pipe, described
The bottom of pulse water distribution pipe is equipped with two rows of water distributing pores, and the angle of two rows of water distributing pores and pulse water distribution pipe axis line is 90 °.
It is further used as the improvement of technical solutions of the utility model, is equipped with aeration in the first aerobic tank and the second aerobic tank
Device.
It is further used as the improvement of technical solutions of the utility model, first anoxic pond and the first aerobic tank pass through first
Return pipe connection, the first return pipe are equipped with the first reflux pump.
It is further used as the improvement of technical solutions of the utility model, second anoxic pond and the second aerobic tank pass through second
Return pipe connection, the second return pipe are equipped with the second reflux pump.
The utility model has the beneficial effects that the utility model is mainly the innovation that initial reaction section+deeply reacts segmented mode,
It can keep the nitrification of high concentration in initial reaction section, denitrification flora;Strengthen the digestion denitrification process goed deep into conversion zone.
It has the following characteristics that
1. the high removal rate of ammonia nitrogen.Initial reaction section+go deep into conversion zone, so that initial reaction section high-concentration biological flora can be with
Accelerate ammonification process, carry out preliminary nitrification and denitrification prepares, for go deep into conversion zone go deep into nitration denitrification provide it is good
Place mat.
2. enduring high-concentration ammonia nitrogen waste water.The innovative technology of initial reaction section+go deep into conversion zone, especially initial reaction section
High-concentration biological flora, can the preferably ammonia nitrogen waste water of enduring high-concentration processing, case history is as a result, it was confirmed that ammonia nitrogen concentration
Up to 300mg/L, in the case where carbon source concentration is not less than 2000mg/L, i.e. for carbon-nitrogen ratio in the range of 30:1, this technique is still
Old that water outlet ammonia nitrogen can be made to reach corresponding national emission standard, i.e. ammonia nitrogen is lower than 15mg/L.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing:
Fig. 1 is the utility model embodiment structural schematic diagram.
Specific embodiment
Referring to Fig.1, that show the specific structures of the preferred embodiment of the utility model.It will be detailed below this reality
It is with shown in FIG. 1 with the design feature of novel each component, and when if there is being described to direction (upper and lower, left and right, before and after)
Structure is reference description, but the actual use direction of the utility model is not limited thereto.
The utility model provides a kind of efficient denitrification biological treatment device, and also referred to as A3O2 efficient denitrification biological treatment fills
It sets, A3O2 is referred to: the aerobic aerobic O+ secondary settling tank of O+ preformed precipitate+anoxic A+ of anaerobism A+ anoxic A+, mainly for ammonia nitrogen in high density
Or total nitrogen concentration is high and has the denitrogenation of waste water process field of advanced treating requirement to nitrogen, including what is be arranged along water process direction
Initial reaction section and go deep into conversion zone, the initial reaction section includes anaerobic pond 1 along the setting of water process direction, the first anoxic pond
2 and first aerobic tank 3, the conversion zone that gos deep into includes the second anoxic pond 4 and the second aerobic tank 5 along the setting of water process direction,
The anaerobic pond 1 is equipped with pulse water distribution device, and the pulse water distribution device includes being located at the Impulsive tank 6 of 1 top of anaerobic pond and setting
Pulse water distributing device 7 in anaerobic pond 1, Impulsive tank 6 are connect with pulse water distributing device 7 by pulse tube 8, are set on the Impulsive tank 6
There is water inlet pipe 9, water inlet pipe 9 is equipped with elevator pump 10, flowmeter 11 and pressure gauge 12.
When work, waste water to be processed enters Impulsive tank 6 by elevator pump, enters initial reaction section by pulse water distributing device,
Nitrification, the denitrification process for carrying out high concentration, then enter and go deep into conversion zone, carry out going deep into nitration denitrification process.
The utility model is mainly the innovation that initial reaction section+deeply reacts segmented mode, can be kept in initial reaction section
The nitrification of high concentration, denitrification flora;Strengthen the digestion denitrification process goed deep into conversion zone.It has the following characteristics that
1. the high removal rate of ammonia nitrogen.Initial reaction section+go deep into conversion zone, so that initial reaction section high-concentration biological flora can be with
Accelerate ammonification process, carry out preliminary nitrification and denitrification prepares, for go deep into conversion zone go deep into nitration denitrification provide it is good
Place mat.
2. enduring high-concentration ammonia nitrogen waste water.The innovative technology of initial reaction section+go deep into conversion zone, especially initial reaction section
High-concentration biological flora, can the preferably ammonia nitrogen waste water of enduring high-concentration processing, case history is as a result, it was confirmed that ammonia nitrogen concentration
Up to 300mg/L, in the case where carbon source concentration is not less than 2000mg/L, i.e. for carbon-nitrogen ratio in the range of 30:1, this technique is still
Old that water outlet ammonia nitrogen can be made to reach corresponding national emission standard, i.e. ammonia nitrogen is lower than 15mg/L.
The top of the pulse tube 8 stretches in Impulsive tank 6, is equipped in Impulsive tank 6 and covers on drawing for 8 outside of pulse tube
Stream cover 13, forms the top nozzle that pulse tube 8 is led to by the bottom port of drainage hood 13 between the drainage hood 13 and pulse tube 8
Siphon passage, air entraining pipe 14 is additionally provided in Impulsive tank 6, and the air entraining pipe 14 forms inner tube in the inside top of drainage hood 13
Mouthful, external nozzle is formed in the outside of drainage hood 13, the external nozzle is higher than inside bore.Water inlet pipe 9 on Impulsive tank 6
Water inlet is higher than the top nozzle of pulse tube 8.In the process, sewage is sent into Impulsive tank 6 by elevator pump 10 by water inlet pipe 9, with
Gas in the rising drainage hood 13 of liquid level be discharged by air entraining pipe 14, after liquid level is higher than the top nozzle of pulse tube, arteries and veins
The sewage rushed in tank 6 forms siphonage in siphon passage, and leaks into anaerobic pond from pulse tube 8, passes through in anaerobism bottom of pond portion
Pulse water distributing device 7 forms pulse water outlet, and when liquid level is lower than the bottom port of drainage hood, siphonage is interrupted, 10 weight of elevator pump
Next pulse cycle water filling is newly carried out into Impulsive tank 6.
6 apical lateral of Impulsive tank is equipped with exhaust pipe 15, and the nozzle of exhaust pipe 15 is equipped with exhaust valve, and the exhaust pipe 15 has
It is laterally extended section, for the section that is laterally extended by threeway connection return pipe 16, the return pipe 16 accesses the arteries and veins of 6 lower section of Impulsive tank
Washing pipe 8.It is discharged into the bubble in Impulsive tank 6 by exhaust pipe 15, enters the sewage in exhaust pipe 15 then through return water with gas
Pipe 16 imports pulse tube.
Wherein, water distributing tray or water distributor can be used in pulse water distributing device 7, preferably, the pulse water distributing device 7 includes pulse
Water distributor, the bottom of the pulse water distribution pipe are equipped with two rows of water distributing pores, the folder of two rows of water distributing pores and pulse water distribution pipe axis line
Angle is 90 °, to guarantee stirring and water distribution effect.
Wherein, in order to provide aerobic environment, it is equipped with aerator 17 in the first aerobic tank 3 and the second aerobic tank 5, it is described
Aerator 17 includes micropore aeration pipe or aeration plate etc..
First anoxic pond 2 and the first aerobic tank 3 are connected by the first return pipe 18, and the first return pipe 18 is equipped with the
One reflux pump 19, flowmeter.Second anoxic pond 4 and the second aerobic tank 5 are connected by the second return pipe 20, the second return pipe
20 are equipped with the second reflux pump 21, flowmeter.Mixed liquor reflux is conducive to this increasing of nitration denitrification bacterium especially denitrifying bacterium
Generation time length, difficult-to-condense are grown, is easily drifted out, the strain being easy to run off preferably preserves, and improves its concentration, accelerates nitrification speed
Rate.It further include PLC automatic control control cabinet 22 in addition, in order to realize automation control, on the first aerobic tank 3 and the second aerobic tank 5
Equipped with DO instrument 23, DO instrument 23, the first reflux pump 19, the second reflux pump 21, flowmeter and elevator pump 10 with PLC automatic control control
Cabinet 22 processed connects.
Certainly, the invention is not limited to above embodiment, and those skilled in the art are without prejudice to originally
Equivalent deformation or replacement can be also made under the premise of utility model spirit, these equivalent variation or replacement are all contained in the application
In claim limited range.