CN106927623A - Integrated biological denitrification reactor and integrated biological denitrification method - Google Patents

Integrated biological denitrification reactor and integrated biological denitrification method Download PDF

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Publication number
CN106927623A
CN106927623A CN201511016886.XA CN201511016886A CN106927623A CN 106927623 A CN106927623 A CN 106927623A CN 201511016886 A CN201511016886 A CN 201511016886A CN 106927623 A CN106927623 A CN 106927623A
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reative cell
degassing
biological denitrification
waste water
integrated biological
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张巍
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PAQUES ENVIRONMENTAL TECHNOLOGY (SHANGHAI) Co Ltd
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PAQUES ENVIRONMENTAL TECHNOLOGY (SHANGHAI) Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/301Aerobic and anaerobic treatment in the same reactor

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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)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

The invention discloses a kind of integrated biological denitrification reactor and integrated biological denitrification method, the integrated biological denitrification reactor includes:Tank body, there is reative cell in the tank body, composite bacterial granule sludge is inoculated with the reative cell, the composite bacterial granule sludge includes anaerobic ammonium oxidizing bacteria inner core and the nitrite bacteria shell being coated on outside the anaerobic ammonium oxidizing bacteria inner core, and the reative cell has waste water inlet and pneumostome;Aerator, the aerator is located in the reative cell;Degassing precipitate and separate device, the degassing precipitate and separate device is located in the reative cell, for separating gas and water and composite bacterial granule sludge.Integrated biological denitrification reactor according to embodiments of the present invention has the advantages that equipment and controls simple, low cost, denitrification effect good.

Description

Integrated biological denitrification reactor and integrated biological denitrification method
Technical field
The present invention relates to environmental technology field, in particular it relates to integrated biological denitrification reactor and integral biological Denitrogenation method.
Background technology
Denitrogenation of waste water is an important step in wastewater treatment, and biological denitrificaion is a kind of important way of denitrogenation of waste water.It is related In technology, nitration denitrification denitrogenation and nitrosation denitrification denitrogenation are conventional wastewater biological denitrificaion technique, however, above-mentioned useless Denitrogenation of water technique has that high cost, control accuracy requirement high, system and control operation complexity, denitrification effect be not good, There is improved demand.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, one aspect of the present invention Propose a kind of equipment and the integrated biological denitrification reactor that control is simple, low cost, denitrification effect are good.
Another aspect of the present invention proposes a kind of integrated biological denitrification method.
To achieve the above object, embodiment according to the first aspect of the invention proposes a kind of integrated biological denitrification reactor, The integrated biological denitrification reactor includes:There is reative cell in tank body, the tank body, be inoculated with the reative cell multiple Bacteria particles sludge is closed, the composite bacterial granule sludge includes anaerobic ammonium oxidizing bacteria inner core and is coated on the anaerobism ammonia oxygen Change the nitrite bacteria shell outside bacterium inner core, the reative cell has waste water inlet and pneumostome;Aerator, it is described Aerator is located in the reative cell;Degassing precipitate and separate device, the degassing precipitate and separate device is located in the reative cell, For separating gas and water and composite bacterial granule sludge.
Integrated biological denitrification reactor according to embodiments of the present invention has equipment and controls simple, low cost, denitrification effect The advantages of good.
In addition, integrated biological denitrification reactor according to embodiments of the present invention also has following additional technical characteristic:
According to one embodiment of present invention, the top of the tank body is opened wide to constitute the pneumostome.
According to one embodiment of present invention, cover is provided with the top of the tank body, the pneumostome is located on the cover.
According to one embodiment of present invention, the top in the degassing precipitate and separate device is provided with downflow weir, in the downflow weir Overflow launder is formed, the overflow launder has the delivery port led to outside the tank body.
According to one embodiment of present invention, the degassing precipitate and separate device includes forming degassing precipitation in casing, the casing There is composite bacterial granule sludge to export for chamber, the bottom in degassing precipitation chamber, the top in the degassing precipitation chamber be provided with every Plate, the cross-sectional area of the bottom in degassing precipitation chamber is gradually reduced along direction from the top down, and the dividing plate is by the degassing The top for precipitating chamber is separated into degassing district and settling zone, and the bottom of the degassing district is connected to take off with the bottom of the settling zone Waste water after nitrogen is overflowed in the degassing district from the reative cell and then flows to the settling zone from the bottom of the degassing district It is interior, precipitation inclined plate or deposition sloped tube are provided with the settling zone, the downflow weir is located in the settling zone.
According to one embodiment of present invention, the upper edge of the box portion of the degassing district is limited with the dividing plate less than described The upper edge of dividing plate and the upper edge of the box portion of the settling zone is limited with the dividing plate.
According to one embodiment of present invention, the cross section of the casing is rectangle.
According to one embodiment of present invention, the lower end of the first longitudinal side wall of the bottom of the casing extends downward beyond the case The lower end of the second longitudinal side wall of the bottom of body, and the lower end of first longitudinal side wall and the lower end of second longitudinal side wall are upper and lower Overlapped on direction.
According to one embodiment of present invention, the integrated biological denitrification reactor also include being located at tank body outside and with The aerator connected aeration pump or Aeration fan.
According to one embodiment of present invention, the integrated biological denitrification reactor also includes being located in the reative cell and position Water-locator above the aerator, the water-locator is connected with the waste water inlet, and the aerator is neighbouring described The bottom surface of reative cell is set.
According to one embodiment of present invention, the integrated biological denitrification reactor also includes being located at stirring in the reative cell Mix device.
According to one embodiment of present invention, the integrated biological denitrification reactor also includes being located at leading in the reative cell Flow cartridge, the top and bottom of the guide shell are opened wide.
According to one embodiment of present invention, the integrated biological denitrification reactor also includes being located at the bottom of the tank body Mud discharging mouthful.
According to one embodiment of present invention, the integrated biological denitrification reactor also includes for will be from the mud discharging At least a portion of the composite bacterial granule sludge of mouth discharge returns to the mud return line on the reative cell top, the sludge One end of return duct connects with the top of the reative cell, and the mud discharging mouthful passes through sludge discharge pipe and the sludge reflux Pipe is connected, and the sludge discharge pipe is provided with sludge pump.
According to one embodiment of present invention, the integrated biological denitrification reactor also includes measurement circulation pipe, the measurement Circulation pipe is provided with measurement circulating pump, and one end of the measurement circulation pipe is connected and the other end and the reaction with the delivery port The top connection of room.
Embodiment according to the second aspect of the invention proposes a kind of integrated biological denitrification method, the integrated biological denitrification Method includes:To waste water is supplied in reative cell, it is inoculated with including anaerobic ammonium oxidizing bacteria inner core in the reative cell and is coated on The composite bacterial granule sludge of the nitrite bacteria shell outside the anaerobic ammonium oxidizing bacteria inner core;To being supplied in the reative cell To air, so that the nitrite bacteria is converted into nitrite nitrogen by a part of ammonia nitrogen in the waste water is aerobic, and it is described Remaining ammonia nitrogen and the nitrite nitrogen in waste water enter in the anaerobic ammonium oxidizing bacteria through the nitrite bacteria shell In core, so that the remaining ammonia nitrogen and the nitrite nitrogen anaerobism are converted into nitrogen and water by the anaerobic ammonium oxidizing bacteria; Waste water outflow after denitrogenation enters water-filling, gas and composite bacterial granule sludge to the degassing precipitate and separate device in the reative cell Three phase separation.
Integrated biological denitrification method according to embodiments of the present invention has the advantages that to control simple, low cost, denitrification effect good.
According to one embodiment of present invention, wherein waste water outflow after the denitrogenation to the degassing precipitate and separate device degassing It is de-gassed in area, the waste water after degassing is flowed in the settling zone for deaerating precipitate and separate device from the bottom of the degassing district, Waste water after the degassing during being flowed up in the settling zone composite bacterial granule sludge downwards precipitation and Returned in the reative cell from the bottom of the degassing precipitate and separate device, wherein the water for the composite bacterial granule sludge separate Overflow in the downflow weir in the degassing precipitate and separate device and discharge the reative cell.
According to one embodiment of present invention, the integrated biological denitrification method also includes the waste water in the stirring reative cell.
According to one embodiment of present invention, the integrated biological denitrification method also includes:Arranged from the bottom of the reative cell Go out sludge and a part for the sludge discharged is returned to the top of the reative cell;Will be described from downflow weir discharge A part for the water of reative cell is supplied in the reative cell together with the waste water.
According to one embodiment of present invention, the waste water is continuously fed in the reative cell.
Brief description of the drawings
Fig. 1 is the schematic diagram of integrated biological denitrification reactor according to embodiments of the present invention.
Fig. 2 is the signal of the composite bacterial granule sludge of inoculation in integrated biological denitrification reactor according to embodiments of the present invention Figure.
Fig. 3 is the schematic diagram of integrated biological denitrification reactor according to another embodiment of the present invention.
Reference:
Integrated biological denitrification reactor 1,
Tank body 100, reative cell 110, waste water inlet 111, pneumostome 112, mud discharging mouthful 113, water inlet pipe 114 enters Water pump 115, composite bacterial granule sludge 120, anaerobic ammonium oxidizing bacteria inner core 121, nitrite bacteria shell 122, cover 130,
Aerator 200,
Degassing precipitate and separate device 300, casing 310, degassing precipitation chamber 311, composite bacterial granule sludge outlet 312, first Longitudinal side wall 313, the second longitudinal side wall 314, dividing plate 320, degassing district 321, settling zone 322, precipitation inclined plate or deposition sloped tube 323, downflow weir 330, overflow launder 331, delivery port 332, outlet pipe 333, effluent recycling pipe 334,
Aeration pump or Aeration fan 400, water-locator 500, agitator 600, guide shell 700, mud return line 800, sludge Pump 810, sludge discharge pipe 820 measures circulation pipe 900, measures circulating pump 910.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.Below with reference to accompanying drawing The embodiment of description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Wastewater biological denitrificaion technology is using more and more extensive waste water treatment process, wastewater biological denitrificaion technique in correlation technique Mainly have following several:
(1) nitration denitrification denitrogenation, i.e., the mineralized nitrogen in waste water is first nitrate nitrogen by nitrobacteria under aerobic environment, Then nitrate nitrogen, by the use of carbon source as reducing agent, is reduced into nitrogen by denitrifying bacteria under simultaneous oxygen environment.
(2) nitrosation denitrification denitrogenation, i.e., the mineralized nitrogen in waste water is first nitrous acid by nitrite bacteria under aerobic environment Salt nitrogen, then nitrite nitrogen, by the use of carbon source as reducing agent, is reduced into nitrogen by denitrifying bacteria under simultaneous oxygen environment.
(3) nitrosation-anaerobic ammoxidation denitrogenation, i.e., nitrite bacteria is first by a part of ammonia nitrogen in waste water under aerobic environment Be converted into nitrite nitrogen, then under anaerobic environment anaerobic ammonium oxidizing bacteria by the remaining ammonia nitrogen and nitrite nitrogen in waste water It is directly translated into nitrogen.
Wherein anaerobic ammonia oxidation process compared with traditional nitration denitrification technique, operating cost and CO2The reduction of discharge is up to 90%.Dutch Paques companies are by the Anammox researched and developed with Dutch Delft PolytechnicsTechnique is special Profit is successfully made commercial applications.
Nitrosation-anaerobic ammoxidation denitrification process is broadly divided into following a few classes again:
(3.1)The reaction of technique, wherein nitrosation and Anammox is entered in two separate reactors OK, ammonium oxidation to Nitrification Stage is controlled in SHARON ponds, a part of mineralized nitrogen in waste water is nitrite nitrogen. The water outlet of SHARON is entered into anaerobic ammonia oxidation reactor, in anaerobic ammonia oxidation reactor, ammonia nitrogen and nitrite nitrogen Nitrogen is converted under anaerobic ammonium oxidizing bacteria effect.
(3.2) DEMON techniques, wherein nitrosation and Anammox are carried out in a reactor, are entered in the reactor In the ranks have a rest into waste water and intermittent aerating.Nitrosation is carried out in aeration time period, the aeration stopping period carrying out Anammox reaction.
(3.3) reaction of AnitaMox techniques, wherein nitrosation and Anammox is carried out on the biomembrane with filler, band The biomembrane of filler suspends in the reactor.It is aerobic zone in the outer layer of biomembrane, nitrosation reaction occurs in the aerobic zone, Biological film inner layer forms local anaerobic area, and Anammox reaction occurs in the local anaerobic area.
Nitrosation-anaerobic ammoxidation biological denitrification process has advantage compared to other denitrification process, but, invention of the invention People has found that above-mentioned technique there is also respective some problems, limit their denitrification effect and application by research and experiment.
For example,In technique, nitrosation and Anammox reaction are in two separate reactors (nitrous Change reactor and anaerobic ammonia oxidation reactor) in carry out, in the SHARON nitrosation reactors under aerobic environment, nitrous acid A part of mineralized nitrogen in waste water is nitrite nitrogen by bacterium, and then, the water outlet of SHARON nitrosation reactors enters to be detested Anaerobic ammonia oxidation reactor under oxygen environment, ammonia nitrogen and nitrite nitrogen are converted into nitrogen under anaerobic ammonium oxidizing bacteria effect Gas.Aeration in nitrosation reactor needs restricted aeration, and aeration control needs are very accurate, and reason is, if in Asia The nitrite nitrogen excessive concentration of generation in nitrator, can produce to the anaerobic ammonium oxidizing bacteria in anaerobic ammonia oxidation reactor Raw toxic action.And, if aeration control is inaccurate, entered into anaerobic ammonia oxidation reactor from nitrosation reactor Water oxygen level is high, can also have a negative impact to anaerobic ammonium oxidizing bacteria, thus causes technique and system unstable, therefore, Technological requirement control is accurate, and denitrification effect is poor, and anaerobic ammonium oxidizing bacteria activity is easily poisoned, and equipment is multiple Miscellaneous, requirements of installation space is big, high cost.Secondly, mineralized nitrogen is nitrite nitrogen in SHARON nitrosation reactors The more difficult control of ratio, particularly in the case where influent ammonium concentration is high, the nitrite nitrogen concentration after conversion is also higher, instead Come over that suppression can be produced to nitrite bacteria and anaerobic ammonia oxidizing bacteria.
And for example, in DEMON techniques, alternately nitrosation and Anammox reaction are carried out in a reactor, from And waste water is needed discontinuously into reaction vessel and being aerated needs the interruption to carry out, and have impact on waste water treatment efficiency, and, Due to alternately form aerobic and anaerobic environment in a reaction vessel, therefore withTechnique is similar to, Equally exist control accuracy requirement high, aeration requires accurate defect, otherwise anaerobic ammonium oxidizing bacteria is caused to poison.And, Because interruption is aerated, nitrite bacteria and anaerobic ammonium oxidizing bacteria in reaction vessel are not readily separated, it will usually revolved by waterpower Stream device is separated, but in sludge in reactor nitrite bacteria the more difficult control of ratio, can be to anaerobic ammonium oxidizing bacteria Reverse transcriptase is produced, causes system and technique unstable.Meanwhile, according to on-line monitoring ammonia nitrogen, nitrite nitrogen or PH value carries out the chain control start and stop of blower fan, also unfavorable for fan life.
For another example, in AnitaMox techniques, under aerobic environment, biological membranous layer is easily pierced, and nitrifier is easily to anaerobism Ammonia oxidizing bacteria produces competitive inhibition.And, biological membranous layer is easily blocked, and is occupied effective in reactor Space, causes the waste of reactor volume and the decline of efficiency.
In view of the bio-denitrification technology situation in correlation technique, the present invention proposes integrated biological denitrification reactor, Composite bacterial granule sludge is inoculated with the reactor, here, it is to be understood that term " composite bacterial granule sludge " Refer to the composite bacterial being made up of anaerobic ammonium oxidizing bacteria and nitrite bacteria, such as Anammox is inoculated with reactor thin Bacterium granule sludge, is then aerated, then nitrite bacteria sludge is added in reactor, or is directly existed in the case of aeration One layer of nitrite bacteria layer of anaerobic ammonium oxidizing bacteria granule sludge surface self-assembling formation, nitrite bacteria is attached to Anammox Bacterium outside, is consequently formed thin by anaerobic ammonium oxidizing bacteria inner core and the nitrous acid being coated on outside anaerobic ammonium oxidizing bacteria inner core Bacterium shell.Because anaerobic ammonium oxidizing bacteria is coated completely by nitrite bacteria, therefore composite bacterial granule sludge the inside is naturally Anaerobic environment.
Thus, it is aerobic environment to be inoculated with a reactor in composite bacterial granule sludge, reactor, positioned at composite bacterial A part of mineralized nitrogen in waste water is nitrite nitrogen, nitrite nitrogen and waste water by the nitrite bacteria of granule sludge outer layer In remaining ammonia nitrogen through nitrite bacteria shell enter anaerobic ammonium oxidizing bacteria inner core, under natural anaerobic environment, anaerobism Nitrite nitrogen and remaining mineralized nitrogen are nitrogen by ammonia oxidizing bacteria, are achieved in the completion nitrous acid in a reactor thin Bacterium aerobic biological denitrification and anaerobic ammonium oxidizing bacteria anaerobic organism denitrogenation, and because nitrite bacteria is coated on Anammox Bacterium outside, therefore nitrosation reaction control accuracy requirement is low, aeration control is simple, and the nitrite nitrogen in aerobic water body Control will not cause to poison and inhibitory action in the range of low concentration to nitrite bacteria anaerobic ammonium oxidizing bacteria, improve Denitrification effect, and equipment simplification, floor space are small, cost reduction.
Below with reference to the accompanying drawings integrated biological denitrification reactor according to embodiments of the present invention is described.
As shown in Figure 1-Figure 3, integrated biological denitrification reactor 1 according to embodiments of the present invention includes tank body 100, aeration Device 200 and degassing precipitate and separate device 300.
Have in reative cell 110, reative cell 110 in tank body 100 and be inoculated with composite bacterial granule sludge 120, composite bacterial Grain sludge 120 includes anaerobic ammonium oxidizing bacteria inner core 121 and nitrite bacteria shell 122, and nitrite bacteria shell 122 is wrapped Overlay on the outside of anaerobic ammonium oxidizing bacteria inner core 121.Reative cell 110 has waste water inlet 111 and pneumostome 112.Aeration dress Put 200 to be located in reative cell 110, for being aerated.Degassing precipitate and separate device 300 is located in reative cell 110, for separating Gas and water and composite bacterial granule sludge, here, degassing precipitate and separate device 300 is referred to as three phase separator.
Below with reference to the accompanying drawings the denitrogenation of waste water process of integrated biological denitrification reactor 1 according to embodiments of the present invention is described.
Waste water is continuously injected into reative cell 110 by waste water inlet 111, and aerator 200 is aerated to oxygen supply in reative cell 110, Aerobic environment is formed in reative cell 110, meanwhile, the air of the supply of aerator 200 plays a part of to stir waste water, thus Waste water in reative cell 110 mixes rapidly with composite bacterial granule sludge 120, waste water and composite bacterial granule sludge 120 Being sufficiently fed for intense contact and oxygen, makes the ammonia nitrogen in waste water be converted rapidly by composite bacterial granule sludge 120.Specifically Ground, the approximately half of mineralized nitrogen in waste water is nitrite by the nitrite bacteria of the outer layer of composite bacterial granule sludge 120 Nitrogen, then, nitrite nitrogen and remaining ammonia nitrogen pass through nitrite bacteria shell 122, with composite bacterial granule sludge 120 Internal anaerobic ammonium oxidizing bacteria contact, nitrite nitrogen and remaining mineralized nitrogen are nitrogen and water by anaerobic ammonium oxidizing bacteria. Because anaerobic ammonium oxidizing bacteria inner core 121 is fully wrapped around by nitrite bacteria shell 122, outside composite bacterial granule sludge 120 Portion is to be suitable to the aerobic environment that nitrite bacteria converts ammonia nitrogen, and it is to be suitable to anaerobism that the inside of composite bacterial granule sludge 120 is natural Ammonia oxidizing bacteria converts the anaerobic environment of ammonia nitrogen and nitrite nitrogen, therefore, aeration control condition precise requirements are low.Finally, Waste water outflow after denitrogenation gas (nitrogen and aeration air) and water and is combined carefully in degassing precipitate and separate device 300, thus Bacterium granule sludge 120 is separated, and the gas after separation is discharged by pneumostome 112, then, water and composite bacterial granule sludge 120 Separate, the composite bacterial granule sludge 120 after separation returns to the interior circulation of reative cell 110 and uses from degassing precipitate and separate device 300, Water overflow after being separated with composite bacterial granule sludge 120 goes out to deaerate precipitate and separate device 300, discharges reative cell 110, is delivered to Subsequent treatment operation.The efficient biological respinse conversion ratio of composite bacterial granule sludge 120, greatly improved denitrogenation of waste water efficiency And save the volume of tank body 100.
Integrated biological denitrification reactor 1 according to embodiments of the present invention, nitrosation and Anammox reaction are in same tank body Carried out in 100, equipment is simple, requirements of installation space is small and low cost.Also, the composite bacterial of inoculation in reative cell 110 Granule sludge 120, the parcel anaerobic ammonium oxidizing bacteria of nitrite bacteria shell 122 inner core 121, so as to dirty in composite bacterial particle Mud 120 is internally formed natural anaerobic environment, greatly reduces the requirement of the aeration precision in reative cell 110, and then ensure The activity and the stability of technique and system of anaerobic ammonium oxidizing bacteria.Therefore, one metaplasia according to embodiments of the present invention Thing denitrification reactor 1 has the advantages that equipment and controls simple, low cost, denitrification effect good.
Below with reference to the accompanying drawings integrated biological denitrification reactor 1 according to particular embodiments of the invention is described.
As shown in Figure 1-Figure 3, integrated biological denitrification reactor 1 according to embodiments of the present invention includes tank body 100, aeration Device 200 and degassing precipitate and separate device 300, are inoculated with being detested by anaerobic ammonium oxidizing bacteria inner core 121 and parcel in tank body 100 The composite bacterial granule sludge 120 that the nitrite bacteria shell 122 of anaerobic ammonium oxidation bacterium inner core 121 is constituted.
Alternatively, the top of tank body 100 can be all opened wide to constitute pneumostome 112 (as shown in Figure 1), to ensure conversion Into nitrogen discharge rapidly.Certainly, integrated biological denitrification reactor 1 according to embodiments of the present invention is not limited to this, tank The top of body 100 can also be provided with cover 130, and pneumostome 112 is located on cover 130, so realize gas discharge Other impurity etc. can be avoided to enter reative cell 110 simultaneously, while playing insulation and reducing the effect of heating energy consumption.
Fig. 1 and Fig. 3 show the integrated biological denitrification reactor 1 according to particular embodiments of the invention.Such as Fig. 1 and Tu Shown in 3, degassing precipitate and separate device 300 includes forming degassing precipitation chamber 311 in casing 310, casing 310, degassing precipitation chamber There is composite bacterial granule sludge to export 312 for 311 bottom.Top in degassing precipitation chamber 311 is provided with dividing plate 320, deaerates The cross-sectional area for precipitating the bottom in chamber 311 is gradually reduced along direction from the top down, and dividing plate 320 will deaerate and precipitate chamber 311 Top is separated into degassing district 321 and settling zone 322, and the bottom of degassing district 321 is connected to take off with the bottom of settling zone 322 Waste water after nitrogen is overflowed in degassing district 321 from reative cell 110 and then flowed in settling zone 322 from the bottom of degassing district 321, It is provided with settling zone 322 and overflow launder 331 is formed in precipitation inclined plate or deposition sloped tube 323 and downflow weir 330, downflow weir 330, Overflow launder 331 has the delivery port 332 led to outside tank body 100.
Below with reference to 1 and Fig. 3 description degassings precipitate and separate device 300 to water, gas and composite bacterial granule sludge 120 point From process.
Ammonia nitrogen in waste water changes into nitrogen and water by composite bacterial granule sludge 120, through 120 turns of composite bacterial granule sludge Gas-entrained and composite bacterial granule sludge 120 in water after change, the water of gas-entrained and composite bacterial granule sludge 120 overflows The degassing district 321 in degassing precipitation chamber 311 is flow to, wherein gas is escaped from degassing district 321, discharged by pneumostome 112, complete Separated into gas.The water of the entrainment composite bacterial granule sludge 120 after being separated with gas is heavy by the bottom flow direction of degassing district 321 Shallow lake area 322, now the precipitation of composite bacterial granule sludge 120 is sunk and the inwall in degassing precipitation chamber 311 lower tilt draws Lead down to composite bacterial granule sludge outlet 312, by the discharge degassing precipitate and separate device 300 of composite bacterial granule sludge outlet 312 Into reative cell 110, continue on for denitrogenation of waste water, separated with composite bacterial granule sludge 120 in degassing precipitation chamber 311 In water overflow afterwards to the overflow launder 331 of downflow weir 330, and reative cell 110 is discharged by delivery port 332, subsequently located Reason.During composite bacterial granule sludge 120 rises with water, composite bacterial granule sludge 120 is oblique in precipitation inclined plate or precipitation Settled on the inwall of pipe 323 and be slipped in degassing precipitation chamber 311, contribute to composite bacterial granule sludge 120 to be separated from water, So far, the separation of water, composite bacterial granule sludge 120 and gas is completed.
Advantageously, as shown in figures 1 and 3, limited with dividing plate 320 degassing district 321 the part of casing 310 on along low The upper edge of the part of casing 310 of settling zone 322 is limited in the upper edge of dividing plate 320 and with dividing plate 320.In other words, case The upper edge of the part for limiting degassing district 321 of body 310, less than edge on the part for limiting settling zone 322 of casing 310, And less than the upper edge of dividing plate 320.Along can be with the part for limiting degassing district 321 of casing 310 on downflow weir 330 On along the part for limiting degassing district 321 concordant or higher than casing 310 upper edge, and the upper edge of downflow weir 330 is less than The upper edge of edge and dividing plate 320 on the part for limiting settling zone 322 of casing 310.Thus it can be prevented that degassing district 321 Interior water is from top overflow to settling zone 322, it is ensured that the water in degassing district 321 flow to settling zone 322 from the bottom of degassing district 321, And then composite bacterial granule sludge 120 is sufficiently separated, and water in settling zone 322 is by overflow to overflow launder 331, Avoid entrainment composite bacterial granule sludge 120 in the water in overflow launder 331.
Alternatively, as shown in figures 1 and 3, the cross section of casing 310 is rectangle, the first longitudinal side of the bottom of casing 310 The lower end of wall 313 extends downward beyond the lower end of the second longitudinal side wall 314 of the bottom of casing 310, and the first longitudinal side wall 313 Lower end it is overlap in the vertical direction with the lower end of the second longitudinal side wall 314, it is possible thereby to advantageously avoid in reative cell 110 Composite bacterial granule sludge 120 exports 312 degassings for entering degassing precipitate and separate device 300 and sinks by composite bacterial granule sludge In shallow lake chamber 311.
For example, in four longitudinal side walls of casing 310, length two longitudinal side walls more long are respectively first in the horizontal direction The lower end of the longitudinal side wall 314 of longitudinal side wall 313 and second, the lower end of the first longitudinal side wall 313 and the second longitudinal side wall 314 is relative to The upper end of the upper end of one longitudinal side wall 313 and the second longitudinal side wall 314 is mutually adjacent, and the lower end of the first longitudinal side wall 313 is located at second The lower section of the lower end of longitudinal side wall 314, and the lower end of the first longitudinal side wall 313 and the second longitudinal side wall 314 lower end in the horizontal plane Projection overlap, gap between the lower end of the first longitudinal side wall 313 and the lower end of the second longitudinal side wall 314 constitutes composite bacterial Grain sludge outlet 312, after thus on the one hand can ensureing that the composite bacterial granule sludge 120 in degassing precipitation chamber 311 is precipitated 312 can be exported by composite bacterial granule sludge smoothly return to reative cell 110, and on the other hand the composite bacterial particle is dirty The structure of mud outlet 312 can stop that the composite bacterial granule sludge 120 in reative cell 110 goes out from composite bacterial granule sludge Mouth 312 enters degassing precipitation chamber 311, it is ensured that the separating effect of composite bacterial granule sludge 120 of degassing precipitate and separate device 300.
Fig. 1 and Fig. 3 show the integrated biological denitrification reactor 1 according to some specific examples of the invention.Such as Fig. 1 and Fig. 3 It is shown, the outside of tank body 100 be provided with the water inlet pipe 114 that is connected with waste water inlet 111 and with going out that delivery port 332 is connected Water pipe 333, water inlet pipe 114 is provided with intake pump 115, and waste water is pumped to reative cell by intake pump 115 by water inlet pipe 114 In 110, the effluent recycling pipe 334 being connected with water inlet pipe 114 is connected with outlet pipe 333, effluent recycling pipe 334 can be by Water in part outlet pipe 333 leads back water inlet pipe 114, thus, if the ammonia nitrogen concentration in waste water is high, by by outlet pipe A part of water of 333 discharges is transported in reative cell 110 together with waste water, and waste water is diluted, and reduces ammonia nitrogen concentration, Reduce inhibitory action of the free ammonia to composite bacterial granule sludge 120.
Alternatively, as shown in figure 3, the sludge that the bottom of tank body 100 is provided with for discharging composite bacterial granule sludge 120 is arranged Put mouth 113.
Further, as shown in figure 3, tank body 100 is externally provided with mud return line 800, the two ends on mud return line 800 point Top not with mud discharging mouthfuls 113 and reative cell 110 connect, and mud return line 800 can be by from mud discharging mouth 113 At least a portion of the composite bacterial granule sludge 120 of discharge returns to reative cell 110.Wherein, mud discharging mouthful 113 leads to Cross sludge discharge pipe 820 to be connected with mud return line 800, sludge discharge pipe 820 is provided with sludge pump 810, from sludge row The a part of of composite bacterial granule sludge 120 for putting the discharge of mouth 113 can return to reative cell 110 by mud return line 800, And another part can be discharged by sludge discharge pipe 820.
Advantageously, as shown in figure 3, tank body 100 be externally provided with measurement circulation pipe 900, measure circulation pipe 900 two ends respectively with Delivery port 332 is connected with the top of reative cell 110, and measurement circulation pipe 900 is provided with measurement circulating pump 910, at denitrogenation Water after reason can carry out ammonia-nitrogen content detection etc. by measuring circulation pipe 900.
Fig. 3 shows the integration denitrification reactor according to particular embodiments of the invention.As shown in figure 3, one metaplasia Thing denitrification reactor 1 also includes aeration pump or Aeration fan 400, and aeration pump or Aeration fan 400 are located at outside tank body 100 And be connected with aerator 200, with to the pumped air of aerator 200.In certain embodiments, aerator 200 is Blast aeration and including aeration airduct and the aeration plate or aeration tube installed in aeration airduct end, aeration pump or Aeration fan 400 Aeration tube or aeration plate are delivered air to by being aerated airduct, aeration tube or aeration plate are by air aeration to reative cell 110. Alternatively, aerator 200 can be jetting type aerator, in the case, without being located at the outside of reative cell 110 Aeration pump or Aeration fan, jetting type aerator are drawn air into instead using jetting type hydraulic blow formula air-diffuser Answer in room 110, the ejector being for example located in reative cell 110 combines the jet pump being located at outside reative cell 110.
Alternatively, as shown in figures 1 and 3, integrated biological denitrification reactor 1 also includes being located in reative cell 110 and position Water-locator 500 above aerator 200, water-locator 500 is connected with waste water inlet 111, and aerator 200 is neighbouring The bottom surface of reative cell 110 is set.The waste water that water-locator 500 will be entered by waste water inlet 111 is dispersed to reative cell 110 Interior, the aeration of aerator 200 also acts as the effect of stirring waste water and composite bacterial granule sludge 120 so that waste water with Composite bacterial granule sludge 120 is fully contacted, and improves denitrification effect.
Further, as shown in figure 3, being further provided with agitator 600 and guide shell 700, guide shell in reative cell 110 700 top and bottom are opened wide and positioned at the top of aerator 200, and agitator 600 plays stirring action, guide shell 700 Guide functions are played, thus, it is possible to further be fully contacted water and composite bacterial granule sludge 120 in reative cell 110, Composite bacterial granule sludge 120 is in suspended state, improves the exposure level of waste water and composite bacterial granule sludge 120, so that Improve denitrogenation of waste water efficiency.
Integrated biological denitrification method according to embodiments of the present invention is described below.
Integrated biological denitrification method according to embodiments of the present invention includes:
To waste water is continuously fed in reative cell, it is inoculated with including anaerobic ammonium oxidizing bacteria inner core in the reative cell and is coated on The composite bacterial granule sludge of the nitrite bacteria shell outside the anaerobic ammonium oxidizing bacteria inner core;
To supplying air in the reative cell, so that the nitrite bacteria is by the aerobic conversion of a part of ammonia nitrogen in the waste water It is that remaining ammonia nitrogen and the nitrite nitrogen in nitrite nitrogen, and the waste water enter through the nitrite bacteria shell In the anaerobic ammonium oxidizing bacteria inner core, so that the anaerobic ammonium oxidizing bacteria is by the remaining ammonia nitrogen and the nitrite nitrogen Anaerobism is converted into nitrogen and water;
Waste water outflow after denitrogenation enters water-filling, gas and composite bacterial particle to the degassing precipitate and separate device in the reative cell The three phase separation of sludge.
Integrated biological denitrification method according to embodiments of the present invention, nitrosation and Anammox reaction are in same reative cell Inside carry out, equipment, the requirement of reduction installation space and reduces cost can be simplified low.Also, use nitrite bacteria Shell and the composite bacterial granule sludge being made up of the anaerobic ammonium oxidizing bacteria inner core that nitrite bacteria shell is wrapped up, so as to multiple Close bacteria particles sludge and be internally formed natural anaerobic environment, greatly reduce the requirement of aeration precision, and then ensure that anaerobism The activity and the stability of technique and system of ammonia oxidizing bacteria.Therefore, integrated biological denitrification according to embodiments of the present invention Method has the advantages that to control simple, low cost, denitrification effect good.
Below with reference to the accompanying drawings integrated biological denitrification method according to the specific embodiment of the invention is described.
In some specific embodiments of the invention, the degassing of waste water outflow after the denitrogenation to the degassing precipitate and separate device It is de-gassed in area, the waste water after degassing is flowed in the settling zone for deaerating precipitate and separate device from the bottom of the degassing district, Waste water after the degassing during being flowed up in the settling zone composite bacterial granule sludge downwards precipitation and Returned in the reative cell from the bottom of the degassing precipitate and separate device, wherein the water for the composite bacterial granule sludge separate Overflow in the downflow weir in the degassing precipitate and separate device and discharge the reative cell.It is achieved in through composite bacterial Water, composite bacterial granule sludge and the nitrogen that changes into after grain sludge conversion are efficiently separated, and good separating effect.
Advantageously, the integrated biological denitrification method also includes the waste water in the stirring reative cell, thus, it is possible to further Water and composite bacterial granule sludge in reative cell is rolled, composite bacterial granule sludge is in suspended state, improve waste water and answer The exposure level of bacteria particles sludge is closed, so as to improve denitrogenation of waste water efficiency.
Alternatively, the integrated biological denitrification method also includes:From the bottom of reative cell discharge sludge and will discharge A part for the sludge returns to the top of the reative cell;One of the water of the reative cell will be discharged from the downflow weir Divide and be supplied to together with the waste water in the reative cell.So waste water is carried out secondary denitrogenation, further improve denitrification effect.
Integrated biological denitrification reactor 1 according to embodiments of the present invention and integrated biological denitrification method, using a tank body Carry out, and tank Inoculation is by anaerobic ammonium oxidizing bacteria inner core and the nitrite bacteria shell of cladding anaerobic ammonium oxidizing bacteria inner core The composite bacterial granule sludge of composition, so as to be internally formed natural anaerobic environment in composite bacterial granule sludge, greatly reduces The requirement of aeration precision, and then ensure that the activity of anaerobic ammonium oxidizing bacteria and the stability of technique and system.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", the orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on Orientation shown in the drawings or position relationship, are for only for ease of and describe of the invention and simplify description, rather than instruction or hint institute The device or element of finger must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this hair Bright limitation.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, " first " is defined, the feature of " second " can be expressed Or implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two It is individual, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " Should be interpreted broadly Deng term, for example, it may be fixedly connected, or be detachably connected, or integrally;Can be Mechanically connect, or electrically connect or can communicate each other;Can be joined directly together, it is also possible to by the indirect phase of intermediary Even, can be two element internals connection or two interaction relationships of element, unless otherwise clearly restriction.For For one of ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be as the case may be understood.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can Being the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, the One feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or Oblique upper, or fisrt feature level height is merely representative of higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or to be merely representative of first special Level height is levied less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. mean to combine the specific features of the embodiment or example description, structure, material or Feature is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term Necessarily it is directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with Combined in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, ability The technical staff in domain can enter the feature of the different embodiments or example described in this specification and different embodiments or example Row is combined and combined.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment be it is exemplary, It is not considered as limiting the invention, one of ordinary skill in the art within the scope of the invention can be to above-described embodiment It is changed, changes, replacing and modification.

Claims (20)

1. integrated biological denitrification reactor, it is characterised in that including:
There is reative cell in tank body, the tank body, composite bacterial granule sludge is inoculated with the reative cell, it is described compound thin Bacterium granule sludge includes anaerobic ammonium oxidizing bacteria inner core and the nitrite bacteria being coated on outside the anaerobic ammonium oxidizing bacteria inner core Shell, the reative cell has waste water inlet and pneumostome;
Aerator, the aerator is located in the reative cell;
Degassing precipitate and separate device, the degassing precipitate and separate device is located in the reative cell, for separating gas and water and being combined thin Bacterium granule sludge.
2. integrated biological denitrification reactor according to claim 1, it is characterised in that the top of the tank body is opened wide To constitute the pneumostome.
3. integrated biological denitrification reactor according to claim 1, it is characterised in that be provided with the top of the tank body Cover, the pneumostome is located on the cover.
4. the integrated biological denitrification reactor according to any one of claim 1-3, it is characterised in that the degassing Top in precipitate and separate device is provided with downflow weir, forms overflow launder in the downflow weir, and the overflow launder has and leads to the tank The delivery port of external body.
5. integrated biological denitrification reactor according to claim 4, it is characterised in that the degassing precipitate and separate device Degassing precipitation chamber is formed including casing, in the casing, there is composite bacterial granule sludge to go out for the bottom in the degassing precipitation chamber Mouthful, the top in the degassing precipitation chamber is provided with dividing plate, and the cross-sectional area of the bottom in the degassing precipitation chamber is along from the top down Direction is gradually reduced, and the top that the degassing precipitates chamber is separated into degassing district and settling zone by the dividing plate, the degassing district Bottom connected so as to denitrogenation with the bottom of the settling zone after waste water overflowed in the degassing district from the reative cell so that from The bottom of the degassing district is flowed in the settling zone, and precipitation inclined plate or deposition sloped tube, the overflow are provided with the settling zone Weir is located in the settling zone.
6. integrated biological denitrification reactor according to claim 5, it is characterised in that limit institute with the dividing plate The upper edge for stating the box portion of degassing district is less than the upper edge of the dividing plate and the casing of the settling zone is limited with the dividing plate Partial upper edge.
7. the integrated biological denitrification reactor according to claim 5 or 6, it is characterised in that the casing it is transversal Face is rectangle.
8. the integrated biological denitrification reactor according to any one of claim 5-7, it is characterised in that the casing Bottom the first longitudinal side wall lower end extend downward beyond the casing bottom the second longitudinal side wall lower end, and described The lower end of one longitudinal side wall is overlap in the vertical direction with the lower end of second longitudinal side wall.
9. the integrated biological denitrification reactor according to any one of claim 1-8, it is characterised in that also including setting The aeration pump or Aeration fan being connected outside the tank body and with the aerator.
10. the integrated biological denitrification reactor according to any one of claim 1-9, it is characterised in that also include It is located in the reative cell and the water-locator above the aerator, the water-locator is connected with the waste water inlet, The aerator is set adjacent to the bottom surface of the reative cell.
The 11. integrated biological denitrification reactor according to any one of claim 1-10, it is characterised in that also include It is located at the agitator in the reative cell.
The 12. integrated biological denitrification reactor according to any one of claim 1-11, it is characterised in that also include The guide shell in the reative cell is located at, the top and bottom of the guide shell are opened wide.
The 13. integrated biological denitrification reactor according to any one of claim 1-12, it is characterised in that also include It is located at the mud discharging mouthful of the bottom of the tank body.
14. integrated biological denitrification reactors according to claim 13, it is characterised in that also including for will be from institute At least a portion for stating the composite bacterial granule sludge of mud discharging mouthful discharge returns to the sludge reflux on the reative cell top Pipe, one end of the mud return line connects with the top of the reative cell, and the mud discharging mouthful passes through sludge discharge pipe and institute State mud return line to be connected, the sludge discharge pipe is provided with sludge pump.
The 15. integrated biological denitrification reactor according to any one of claim 1-14, it is characterised in that also include Measurement circulation pipe, the measurement circulation pipe is provided with measurement circulating pump, one end of the measurement circulation pipe and the delivery port phase Connect and the other end is connected with the top of the reative cell.
16. integrated biological denitrification methods, it is characterised in that including:
To waste water is supplied in reative cell, it is inoculated with including anaerobic ammonium oxidizing bacteria inner core in the reative cell and is coated on described to detest The composite bacterial granule sludge of the nitrite bacteria shell outside anaerobic ammonium oxidation bacterium inner core;
To supplying air in the reative cell, so that the nitrite bacteria is by the aerobic conversion of a part of ammonia nitrogen in the waste water It is that remaining ammonia nitrogen and the nitrite nitrogen in nitrite nitrogen, and the waste water enter through the nitrite bacteria shell In the anaerobic ammonium oxidizing bacteria inner core, so that the anaerobic ammonium oxidizing bacteria is by the remaining ammonia nitrogen and the nitrite nitrogen Anaerobism is converted into nitrogen and water;
Waste water outflow after denitrogenation enters water-filling, gas and composite bacterial particle to the degassing precipitate and separate device in the reative cell The three phase separation of sludge.
17. biological denitrification methods according to claim 16, it is characterised in that the waste water outflow after wherein described denitrogenation It is de-gassed in the degassing district of the degassing precipitate and separate device, the waste water after degassing flows to described from the bottom of the degassing district Deaerate in the settling zone of precipitate and separate device, the waste water after the degassing is described during being flowed up in the settling zone Composite bacterial granule sludge downwards precipitation and from it is described degassing precipitate and separate device bottom return in the reative cell, wherein with institute The water for stating the separation of composite bacterial granule sludge is overflowed in the downflow weir deaerated in precipitate and separate device and discharged described anti- Answer room.
18. biological denitrification methods according to claim 17, it is characterised in that also including stirring in the reative cell Waste water.
19. biological denitrification methods according to claim 17, it is characterised in that also include:From the bottom of the reative cell Discharge sludge and a part for the sludge discharged is returned to the top of the reative cell in portion;
The part that the water of the reative cell is discharged from the downflow weir is supplied in the reative cell together with the waste water.
20. biological denitrification method according to any one of claim 16-19, it is characterised in that the waste water is continuous Be supplied in the reative cell.
CN201511016886.XA 2015-12-29 2015-12-29 Integrated biological denitrification reactor and integrated biological denitrification method Pending CN106927623A (en)

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CN113582441A (en) * 2021-07-22 2021-11-02 长沙理工大学 Collecting, purifying and recycling system for pollution runoff of dry bulk cargo wharf
CN113582442A (en) * 2021-07-22 2021-11-02 长沙理工大学 Collecting, purifying and recycling system for liquid bulk cargo wharf polluted runoff
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