CN205347126U - Integration biological denitrification reactor - Google Patents
Integration biological denitrification reactor Download PDFInfo
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- CN205347126U CN205347126U CN201521126468.1U CN201521126468U CN205347126U CN 205347126 U CN205347126 U CN 205347126U CN 201521126468 U CN201521126468 U CN 201521126468U CN 205347126 U CN205347126 U CN 205347126U
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Abstract
The utility model discloses an integration biological denitrification reactor, include: the jar body, jar internal have a reacting chamber, reaction indoor inoculation has compound bacteria granular sludge, compound bacteria granular sludge includes that anaerobic ammonia oxidizing bacteria inner core and cladding are in the nitrite bacteria shell of anaerobic ammonia oxidizing bacteria inner core outside, the reacting chamber has the waste water import and breathes the mouth, aeration equipment, aeration equipment establishes in the reacting chamber, degasification sediment separator, the degasification sediment separator establish in the reacting chamber for separation gas, water and compound bacteria granular sludge, the pipe sweeps, the one end that sweeps the pipe stretches into in the degasification sediment separator, be used for to regularly blow the air in the degasification sediment separator in order to avoid degasification sediment separator blocks up. According to the utility model discloses an advantages such as integration biological denitrification reactor has equipment and control is simple, with low costs, the denitrogenation is effectual, performance and efficiency are stable.
Description
Technical field
This utility model relates to environmental technology field, and specifically, this utility model relates to a kind of integrated biological denitrification reactor.
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.In correlation technique, nitration denitrification denitrogenation and nitrosation denitrification denitrogenation are conventional wastewater biological denitrificaion technique, but, the problem that above-mentioned wastewater denitrification process exists cost height, control accuracy requires high, system and control complicated operation, denitrification effect are not good, there is the demand of improvement.
Utility model content
One of technical problem that this utility model is intended to solve in correlation technique at least to a certain extent.For this, this utility model proposes a kind of equipment on the one hand and controls the integrated biological denitrification reactor simple, cost is low, denitrification effect is good.
For achieving the above object, according to the utility model proposes a kind of integrated biological denitrification reactor, described integrated biological denitrification reactor includes: tank body, in described tank body, there is reative cell, composite bacterial granule sludge it is inoculated with in described reative cell, described composite bacterial granule sludge includes anaerobic ammonium oxidizing bacteria inner core and is coated on the nitrite bacteria shell outside described anaerobic ammonium oxidizing bacteria inner core, and described reative cell has waste water inlet and pneumostome；Aerator, described aerator is located in described reative cell；Degassed precipitate and separate device, described degassed precipitate and separate device is located in described reative cell, is used for separating gas and water and composite bacterial granule sludge；Scavenging conduit, one end of described scavenging conduit extend in described degassed precipitate and separate device, for regularly blowing air in described degassed precipitate and separate device to avoid described degassed precipitate and separate device to block.
According to integrated biological denitrification reactor of the present utility model, there is equipment and control the advantages such as simple, cost is low, denitrification effect is good.
The open-top of described tank body is to constitute described pneumostome, or the top of described tank body is provided with the cover pneumostome that described pneumostome is formed thereon.
Top in described degassed precipitate and separate device is provided with downflow weir, forms overflow launder in described downflow weir, and described overflow launder has the outlet led to outside described tank body.
Described degassed precipitate and separate device includes casing, degassed precipitation chamber is formed in described casing, the bottom in described degassed precipitation chamber has the outlet of composite bacterial granule sludge, the top of described degassed precipitation intracavity is provided with dividing plate, the cross-sectional area of the bottom in described degassed precipitation chamber is gradually reduced along direction from the top down, the top in described degassed precipitation chamber is separated into degassed district and settling zone by described dividing plate, the bottom in described degassed district connect with the bottom of described settling zone in case the waste water after denitrogenation from described reative cell overflow in described degassed district so that from the bottom stream in described degassed district to described settling zone in, precipitation inclined plate or deposition sloped tube it is provided with in described settling zone, described downflow weir is located in described settling zone, one end of described scavenging conduit extend into below described settling zone.
Upper edge with the upper edge lower than described dividing plate, the upper edge of the box portion that described dividing plate limits described degassed district and the box portion limiting described settling zone with described dividing plate.
The cross section of described casing is rectangle, the lower end of the first longitudinal side wall of the bottom of described casing extends downward beyond the lower end of the second longitudinal side wall of the bottom of described casing, and the lower end of described first longitudinal side wall is overlapping in the vertical direction with the lower end of described second longitudinal side wall.
Described integrated biological denitrification reactor also includes being located at described tank body outside and the aeration pump being connected with the other end of described aerator and described scavenging conduit or Aeration fan.
Described integrated biological denitrification reactor also includes being located in described reative cell and being positioned at the water-locator above described aerator, and described water-locator is connected with described waste water inlet, and the bottom surface of the contiguous described reative cell of described aerator is arranged.
Described integrated biological denitrification reactor also includes being located at the agitator in described reative cell and guide shell, and the top and bottom of described guide shell are opened wide.
Mud discharging mouth that described integrated biological denitrification reactor also includes being located at the bottom of described tank body and also include the mud return line returning to described reative cell top at least partially for the composite bacterial granule sludge will discharged from described mud discharging mouth, one end of described mud return line connects with the top of described reative cell, described mud discharging mouth is connected with described mud return line by mud discharge pipe, and described mud discharge pipe is provided with sludge pump.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the integrated biological denitrification reactor according to this utility model embodiment.
Fig. 2 is the schematic diagram of the composite bacterial granule sludge of inoculation in the integrated biological denitrification reactor according to this utility model embodiment.
Fig. 3 is the schematic diagram of the integrated biological denitrification reactor according to another embodiment of this utility model.
Accompanying drawing labelling:
Integrated biological denitrification reactor 1,
Tank body 100, reative cell 110, waste water inlet 111, pneumostome 112, mud discharging mouth 113, water inlet pipe 114, intake pump 115, composite bacterial granule sludge 120, anaerobic ammonium oxidizing bacteria inner core 121, nitrite bacteria shell 122, cover 130,
Aerator 200, control valve 210, scavenging conduit 220,
Degassed precipitate and separate device 300, casing 310, degassed precipitation chamber 311, composite bacterial granule sludge outlet 312, the first longitudinal side wall 313, the second longitudinal side wall 314, dividing plate 320, degassed district 321, settling zone 322, precipitation inclined plate or deposition sloped tube 323, downflow weir 330, overflow launder 331, outlet 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, mud discharge pipe 820, measure circulation pipe 900, measure circulating pump 910.
Detailed description of the invention
Being described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings.The embodiment described below with reference to accompanying drawing is illustrative of, it is intended to be used for explaining this utility model, and it is not intended that to restriction of the present utility model.
Wastewater biological denitrificaion technology is to apply waste water treatment process more and more widely, and in correlation technique, wastewater biological denitrificaion technique mainly has following several:
(1) nitration denitrification denitrogenation, namely under aerobic environment, the mineralized nitrogen in waste water is first nitrate nitrogen by nitrobacteria, and then under double oxygen environment, denitrifying bacteria utilizes carbon source as reducing agent, and nitrate nitrogen is reduced into nitrogen.
(2) nitrosation denitrification denitrogenation, namely under aerobic environment, the mineralized nitrogen in waste water is first nitrite nitrogen by nitrite bacteria, and then under double oxygen environment, denitrifying bacteria utilizes carbon source as reducing agent, and nitrite nitrogen is reduced into nitrogen.
(3) nitrosation-anaerobic ammoxidation denitrogenation, namely under aerobic environment, a part of ammonia nitrogen in waste water is first first converted into nitrite nitrogen by nitrite bacteria, and then under anaerobic environment, the residue ammonia nitrogen in waste water and nitrite nitrogen are directly translated into nitrogen by anaerobic ammonium oxidizing bacteria.
Wherein anaerobic ammonia oxidation process is compared with traditional nitration denitrification technique, operating cost and CO2The reduction of discharge is up to 90%.Paques company is by the Anammox with the research and development of Delft Polytechnics of HollandTechnique patent is successfully made commercial applications.
Nitrosation-anaerobic ammoxidation denitrification process is broadly divided into again following a few class:
(3.1)Technique, wherein nitrosation and Anammox reaction carry out in two separate reactors, control ammonium oxidation to Nitrification Stage in SHARON pond, and a part of mineralized nitrogen in waste water is nitrite nitrogen.The water outlet of SHARON enters in anaerobic ammonia oxidation reactor, and in anaerobic ammonia oxidation reactor, ammonia nitrogen and nitrite nitrogen are converted into nitrogen under anaerobic ammonium oxidizing bacteria effect.
(3.2) DEMON technique, wherein nitrosation and Anammox carry out in a reactor, carry out interval in the reactor and enter waste water and intermittent aerating.Carrying out nitrosation at aeration time period, the aeration stopping period carrying out Anammox reaction.
(3.3) AnitaMox technique, wherein nitrosation and Anammox reaction are carrying out with on the biomembrane of filler, and the biomembrane with filler suspends in the reactor.Being aerobic zone at biomembranous outer layer, nitrosation reaction occurs in this aerobic zone, biomembrane internal layer forms local anaerobic district, and Anammox reaction occurs in this local anaerobic district.
Nitrosation-anaerobic ammoxidation biological denitrification process has advantage compared to other denitrification process, but, utility model people of the present utility model is by studying and test discovery, and above-mentioned technique there is also more respective problems, limits their denitrification effect and application.
Such as, existIn technique, nitrosation and Anammox reaction carry out in two separate reactors (nitrosation reactor and anaerobic ammonia oxidation reactor), in SHARON nitrosation reactor under aerobic environment, a part of mineralized nitrogen in waste water is nitrite nitrogen by nitrite bacteria, then, the water outlet of SHARON nitrosation reactor enters the anaerobic ammonia oxidation reactor under anaerobic environment, and ammonia nitrogen and nitrite nitrogen are converted into nitrogen under anaerobic ammonium oxidizing bacteria effect.Aeration in nitrosation reactor needs restricted aeration, and aeration control needs very accurate, and reason is, if the nitrite nitrogen excessive concentration generated in nitrosation reactor, the anaerobic ammonium oxidizing bacteria in anaerobic ammonia oxidation reactor can be produced toxic action.And, if aeration control inaccuracy, enter into the water oxygen level in anaerobic ammonia oxidation reactor from nitrosation reactor high, also anaerobic ammonium oxidizing bacteria can be had a negative impact, thus cause that technique and system are unstable, therefore, this technological requirement controls accurately, and denitrification effect is poor, anaerobic ammonium oxidizing bacteria activity is easily subject to poison, and equipment is complicated, requirements of installation space is big, and cost is high.Secondly, in SHARON nitrosation reactor, mineralized nitrogen is the more difficult control of ratio of nitrite nitrogen, particularly when influent ammonium concentration is high, the nitrite nitrogen concentration after conversion is also higher, can produce to suppress to nitrite bacteria and anaerobic ammonia oxidizing bacteria in turn.
And for example, in DEMON technique, a reactor carries out hocket nitrosation and Anammox reaction, thus waste water needs entrance reaction vessel discontinuously interior and aeration needs interruption to carry out, have impact on waste water treatment efficiency, be additionally, since in a reaction vessel, to alternately form aerobic and anaerobic environment, therefore withTechnique is similar, equally exists control accuracy and requires height, and aeration requires accurate defect, otherwise anaerobic ammonium oxidizing bacteria is caused murder by poisoning.And; owing to being interrupted aeration; nitrite bacteria and anaerobic ammonium oxidizing bacteria in reaction vessel are not readily separated; would generally be easily separated by hydrocyclone; but the more difficult control of the ratio of nitrite bacteria in the mud in reactor; anaerobic ammonium oxidizing bacteria can be produced competitive inhibition, cause that system and technique are unstable.Meanwhile, carry out the chain control start and stop of blower fan according to the ammonia nitrogen of on-line monitoring, nitrite nitrogen or pH value, also unfavorable for fan life.
For another example, in AnitaMox technique, under aerobic environment, biological membranous layer is easily pierced, and anaerobic ammonium oxidizing bacteria is easily produced competitive inhibition by nitrifier.And, biological membranous layer easily blocks, and occupies the useful space in reactor, causes the waste of reactor volume and the decline of usefulness.
Consider the bio-denitrification technology situation in correlation technique, the present invention proposes integrated biological denitrification reactor, composite bacterial granule sludge it is inoculated with in this reactor, here, it will be appreciated that, term " composite bacterial granule sludge " refers to the composite bacterial being made up of anaerobic ammonium oxidizing bacteria and nitrite bacteria, in reactor, such as inoculate anaerobic ammonium oxidizing bacteria granule sludge, then aeration, again nitrite bacteria mud is joined in reactor, or directly at anaerobic ammonium oxidizing bacteria granule sludge surface one layer of nitrite bacteria layer of self-assembling formation in aeration situation, nitrite bacteria is attached to outside anaerobic ammonium oxidizing bacteria, it is consequently formed by anaerobic ammonium oxidizing bacteria inner core and is coated on the nitrite bacteria shell outside anaerobic ammonium oxidizing bacteria inner core.Owing to anaerobic ammonium oxidizing bacteria is coated with completely by nitrite bacteria, therefore natural in anaerobic environment inside composite bacterial granule sludge.
Thus, composite bacterial granule sludge is inoculated in a reactor, it is aerobic environment in reactor, a part of mineralized nitrogen of waste water is nitrite nitrogen by the nitrite bacteria being arranged in composite bacterial granule sludge outer layer, residue ammonia nitrogen in nitrite nitrogen and waste water enters anaerobic ammonium oxidizing bacteria inner core through nitrite bacteria shell, under natural anaerobic environment, nitrite nitrogen and residue mineralized nitrogen are nitrogen by anaerobic ammonium oxidizing bacteria, it is achieved in a reactor, complete nitrite bacteria aerobic biological denitrification and anaerobic ammonium oxidizing bacteria Anaerobe denitrogenation, and owing to nitrite bacteria is coated on outside anaerobic ammonium oxidizing bacteria, therefore nitrosation reaction control accuracy requires low, aeration control is simple, and the nitrite nitrogen in aerobic water body controls within the scope of low concentration, nitrite bacteria anaerobic ammonium oxidizing bacteria will not be caused murder by poisoning and inhibitory action, improve denitrification effect, and equipment simplifies, take up an area space little, cost reduces.
And, regularly blow air to degassed precipitate and separate device by scavenging conduit, it is possible to avoid the degassed precipitate and separate device of sludge blockage.
Below with reference to the accompanying drawings integrated biological denitrification reactor according to this utility model embodiment is described.
As shown in Figure 1-Figure 3, tank body 100, aerator 200, degassed precipitate and separate device 300 and scavenging conduit 220 are included according to the integrated biological denitrification reactor 1 of this utility model embodiment.
There is in tank body 100 reative cell 110, composite bacterial granule sludge 120 it is inoculated with in reative cell 110, composite bacterial granule sludge 120 includes anaerobic ammonium oxidizing bacteria inner core 121 and nitrite bacteria shell 122, and nitrite bacteria shell 122 is coated on outside anaerobic ammonium oxidizing bacteria inner core 121.Reative cell 110 has waste water inlet 111 and pneumostome 112.Aerator 200 is located in reative cell 110, for aeration.Degassed precipitate and separate device 300 is located in reative cell 110, is used for separating gas and water and composite bacterial granule sludge, and here, degassed precipitate and separate device 300 can also be called three phase separator.One end of scavenging conduit 220 extend in degassed precipitate and separate device 300, for regularly blowing air in degassed precipitate and separate device 300 to avoid degassed precipitate and separate device 300 to block.
Below with reference to the accompanying drawings the denitrogenation of waste water process of integrated biological denitrification reactor 1 according to this utility model embodiment is described.
Waste water is continuously injected into reative cell 110 by waste water inlet 111, aerator 200 is to oxygen supply aeration in reative cell 110, aerobic environment is formed in reative cell 110, simultaneously, the air of aerator 200 supply plays the effect of stirring waste water, thus the waste water in reative cell 110 mixes rapidly with composite bacterial granule sludge 120, waste water and the intense contact of composite bacterial granule sludge 120 and being sufficiently fed of oxygen, makes the ammonia nitrogen in waste water be converted rapidly by composite bacterial granule sludge 120.Specifically, approximately half of mineralized nitrogen in waste water is nitrite nitrogen by the nitrite bacteria of composite bacterial granule sludge 120 outer layer, then, nitrite nitrogen and remaining ammonia nitrogen traverse nitrite bacteria shell 122, contacting with the anaerobic ammonium oxidizing bacteria within composite bacterial granule sludge 120, nitrite nitrogen and remaining mineralized nitrogen are nitrogen and water by anaerobic ammonium oxidizing bacteria.Owing to anaerobic ammonium oxidizing bacteria inner core 121 is fully wrapped around by nitrite bacteria shell 122, the outside aerobic environment converting ammonia nitrogen for being suitable to nitrite bacteria of composite bacterial granule sludge 120, and the internal natural anaerobic environment converting ammonia nitrogen and nitrite nitrogen for being suitable to anaerobic ammonium oxidizing bacteria of composite bacterial granule sludge 120, therefore, aeration control condition precise requirements is low.Finally, waste water outflow after denitrogenation is in degassed precipitate and separate device 300, thus gas (nitrogen and aeration air) separates with water and composite bacterial granule sludge 120, gas after separation is discharged by pneumostome 112, then, water separates with composite bacterial granule sludge 120, composite bacterial granule sludge 120 after separation returns reative cell 110 internal recycle from degassed precipitate and separate device 300 and uses, water overflow after separating with composite bacterial granule sludge 120 goes out degassed precipitate and separate device 300, discharge reative cell 110, be delivered to subsequent treatment operation.The efficient biological respinse conversion ratio of composite bacterial granule sludge 120, is greatly improved denitrogenation of waste water efficiency and saves tank body 100 volume.
Simultaneously, in this wastewater treatment process, one end of scavenging conduit 220 extend in degassed precipitate and separate device 300, for example, as shown in figures 1 and 3, scavenging conduit 220 can be the arm of aerator 200, and scavenging conduit 220 is provided with the control valve 210 outside tank body 100, scavenging conduit 220 stretches into degassed precipitate and separate device 300, controls valve 210 and regularly opens scavenging conduit 220, thus regularly purging to avoid degassed precipitate and separate device 300 to be blocked by composite bacterial granule sludge 120 grade.
Integrated biological denitrification reactor 1 according to this utility model embodiment, nitrosation and Anammox reaction carry out in same tank body 100, and equipment is simple, requirements of installation space is little and cost is low.And, the composite bacterial granule sludge 120 of inoculation in reative cell 110, nitrite bacteria shell 122 wraps up anaerobic ammonium oxidizing bacteria inner core 121, thus being internally formed natural anaerobic environment at composite bacterial granule sludge 120, greatly reduce the requirement of aeration precision in reative cell 110, and then ensure that the activity of anaerobic ammonium oxidizing bacteria and the stability of technique and system.Additionally, scavenging conduit 220 extend in degassed precipitate and separate device 300 and regularly blows air, it is possible to avoid degassed precipitate and separate device 300 to block, it is ensured that the stability of wastewater treatment and treatment effeciency.
Therefore, according to the integrated biological denitrification reactor 1 of this utility model embodiment have equipment and control simple, cost is low, denitrification effect good, wastewater treatment performance and the advantage such as waste water treatment efficiency is stable.
Below with reference to the accompanying drawings integrated biological denitrification reactor 1 according to some specific embodiments of this utility model is described.
As shown in Figure 1-Figure 3, integrated biological denitrification reactor 1 according to this utility model embodiment includes tank body 100, aerator 200, degassed precipitate and separate device 300 and scavenging conduit 220, is inoculated with the composite bacterial granule sludge 120 being made up of the nitrite bacteria shell 122 of anaerobic ammonium oxidizing bacteria inner core 121 and parcel anaerobic ammonium oxidizing bacteria inner core 121 in tank body 100.
Alternatively, the top of tank body 100 can all be opened wide to constitute pneumostome 112 (as shown in Figure 1), to ensure that the nitrogen changed into is discharged rapidly.Certainly, integrated biological denitrification reactor 1 according to this utility model embodiment is not limited to this, the top of tank body 100 can also be provided with cover 130, pneumostome 112 is located on cover 130, other impurity etc. so can be avoided while realizing gas discharging to enter reative cell 110, simultaneously work as insulation and reduce the effect of heating energy consumption.
Fig. 1 and Fig. 3 illustrates the integrated biological denitrification reactor 1 according to some specific embodiments of this utility model.As shown in figures 1 and 3, degassed precipitate and separate device 300 includes casing 310, forms degassed precipitation chamber 311 in casing 310, and the bottom in degassed precipitation chamber 311 has composite bacterial granule sludge outlet 312.Top in degassed precipitation chamber 311 is provided with dividing plate 320, the cross-sectional area of the bottom in degassed precipitation chamber 311 is gradually reduced along direction from the top down, the top in degassed precipitation chamber 311 is separated into degassed district 321 and settling zone 322 by dividing plate 320, the bottom in degassed district 321 connect with the bottom of settling zone 322 in case the waste water after denitrogenation from reative cell 110 overflow in degassed district 321 so that from the bottom stream in degassed district 321 to settling zone 322 in, precipitation inclined plate or deposition sloped tube 323 and downflow weir 330 it is provided with in settling zone 322, overflow launder 331 is formed in downflow weir 330, overflow launder 331 has the outlet 332 led to outside tank body 100.One end of scavenging conduit 220 extend into below settling zone 322 and contiguous composite bacterial granule sludge outlet 312.
Below with reference to 1 and Fig. 3, the separation process to water, gas and composite bacterial granule sludge 120 of the degassed precipitate and separate device 300 is described.
Ammonia nitrogen in waste water is changed into nitrogen and water by composite bacterial granule sludge 120, gas-entrained and composite bacterial granule sludge 120 in water after composite bacterial granule sludge 120 converts, the degassed district 321 in the gas-entrained water overflow extremely degassed precipitation chamber 311 with composite bacterial granule sludge 120, wherein gas is overflowed from degassed district 321, discharged by pneumostome 112, complete gas and separate.The water carrying composite bacterial granule sludge 120 secretly after separated from the gas is flowed to settling zone 322 by the bottom in degassed district 321, now composite bacterial granule sludge 120 precipitation sinking the guiding at the inwall of degassed precipitation chamber 311 lower tilt export 312 down to composite bacterial granule sludge, exported the 312 degassed precipitate and separate devices 300 of discharge by composite bacterial granule sludge and enter reative cell 110, continue on for denitrogenation of waste water, water overflow after separating with composite bacterial granule sludge 120 in degassed precipitation chamber 311 is to the overflow launder 331 of downflow weir 330, and discharged reative cell 110 by outlet 332, carry out subsequent treatment.In composite bacterial granule sludge 120 and water uphill process, composite bacterial granule sludge 120 settles on the inwall of precipitation inclined plate or deposition sloped tube 323 and is slipped in degassed 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.In this separation process, scavenging conduit 220 regularly blows air in settling zone 322, such that it is able to avoid settling zone 322 to be blocked by composite bacterial granule sludge 120 grade.
Advantageously, as shown in figures 1 and 3, the upper edge of casing 310 part limiting degassed district 321 with dividing plate 320 lower than the upper edge of dividing plate 320 and limits the upper edge of casing 310 part of settling zone 322 with dividing plate 320.In other words, the upper edge of the part limiting degassed district 321 of casing 310, lower than edge in the part limiting settling zone 322 of casing 310, and lower than the upper edge of dividing plate 320.The upper edge of downflow weir 330 can with in the part limiting degassed district 321 of casing 310 along concordant or higher than casing 310 the upper edge of the part limiting degassed district 321, and the upper edge of downflow weir 330 lower than in the part limiting settling zone 322 of casing 310 along and the upper edge of dividing plate 320.Thus it can be prevented that the water overflow from above in degassed district 321 is to settling zone 322, the water ensured in degassed district 321 flow to settling zone 322 bottom degassed district 321, and then make composite bacterial granule sludge 120 be sufficiently separated, and the water in settling zone 322 by overflow to the overflow launder 331, it is to avoid the water in overflow launder 331 carries composite bacterial granule sludge 120 secretly.
Alternatively, as shown in figures 1 and 3, the cross section of casing 310 is rectangle, the lower end of the first longitudinal side wall 313 of the bottom of casing 310 extends downward beyond the lower end of the second longitudinal side wall 314 of the bottom of casing 310, and first the lower end of longitudinal side wall 313 overlapping in the vertical direction with the lower end of the second longitudinal side wall 314, thus can advantageously avoid in the degassed precipitation chambeies 311 by the composite bacterial granule sludge outlet 312 degassed precipitate and separate devices 300 of entrance of the composite bacterial granule sludge 120 in reative cell 110.
Such as, in four longitudinal side walls of casing 310, two longitudinal side walls that length is longer in the horizontal direction respectively the first longitudinal side wall 313 and the second longitudinal side wall 314, the lower end of the first longitudinal side wall 313 and the lower end of the second longitudinal side wall 314 are mutually adjacent relative to the upper end of the upper end of the first longitudinal side wall 313 and the second longitudinal side wall 314, the lower end of the first longitudinal side wall 313 is positioned at the lower section of the lower end of the second longitudinal side wall 314, and first lower end and the lower end of the second longitudinal side wall 314 projection in horizontal plane of longitudinal side wall 313 overlapping, gap between lower end and the lower end of the second longitudinal side wall 314 of the first longitudinal side wall 313 constitutes composite bacterial granule sludge outlet 312, composite bacterial granule sludge outlet 312 can be passed through after thus can ensure that composite bacterial granule sludge 120 precipitation in degassed precipitation chamber 311 on the one hand and return reative cell 110 smoothly, and the composite bacterial granule sludge 120 that the structure of this composite bacterial granule sludge outlet 312 on the other hand can stop in reative cell 110 exports the 312 degassed precipitation chambeies 311 of entrance from composite bacterial granule sludge, ensure composite bacterial granule sludge 120 separating effect of degassed precipitate and separate device 300.
Fig. 1 and Fig. 3 illustrates the integrated biological denitrification reactor 1 according to some concrete examples of this utility model.As shown in figures 1 and 3, tank body 100 be provided externally with the water inlet pipe 114 connected with waste water inlet 111 and the outlet pipe 333 connected with outlet 332, water inlet pipe 114 is provided with intake pump 115, waste water pump is delivered in reative cell 110 by water inlet pipe 114 by intake pump 115, outlet pipe 333 is connected to the effluent recycling pipe 334 being connected with water inlet pipe 114, water in part outlet pipe 333 can be led back water inlet pipe 114 by effluent recycling pipe 334, thus, if the ammonia nitrogen concentration in waste water is high, it is transported in reative cell 110 together with waste water by a part of water that outlet pipe 333 is discharged, waste water is diluted, reduce ammonia nitrogen concentration, reduce the free ammonia inhibitory action to composite bacterial granule sludge 120.
Alternatively, as it is shown on figure 3, the bottom of tank body 100 is provided with the mud discharging mouth 113 for discharging composite bacterial granule sludge 120.
Further, as shown in Figure 3, tank body 100 is externally provided with mud return line 800, two ends on mud return line 800 connect with the top of mud discharging mouth 113 and reative cell 110 respectively, and the composite bacterial granule sludge 120 discharged from mud discharging mouth 113 can be returned to reative cell 110 by mud return line 800 at least partially.Wherein, mud discharging mouth 113 is connected with mud return line 800 by mud discharging pipe 820, mud discharging pipe 820 is provided with sludge pump 810, mud return line 800 can be passed through from a part for the composite bacterial granule sludge 120 of mud discharging mouth 113 discharge and return reative cell 110, and another part can pass through mud discharging pipe 820 and discharge.
Advantageously, as shown in Figure 3, tank body 100 is externally provided with measurement circulation pipe 900, the two ends measuring circulation pipe 900 connect with the top of outlet 332 and reative cell 110 respectively, measuring circulation pipe 900 and be provided with measurement circulating pump 910, the water after denitrogenation processing can pass through to measure circulation pipe 900 and carry out ammonia-nitrogen content detection etc..
Fig. 3 illustrates the integration denitrification reactor according to some specific embodiments of this utility model.As it is shown on figure 3, integrated biological denitrification reactor 1 also includes aeration pump or Aeration fan 400, aeration pump or Aeration fan 400, to be located at tank body 100 outside and be connected with the other end of aerator 200 and scavenging conduit 220, with to aerator 200 pumped air.In certain embodiments, aerator 200 is blast aeration and includes aeration airduct and be arranged on aeration plate or the aeration tube of aeration airduct end, aeration pump or Aeration fan 400 deliver air to aeration tube or aeration plate, aeration tube or aeration plate by air aeration to reative cell 110 by aeration airduct.Alternatively, aerator 200 can be jetting type aerator, in the case, without being located at aeration pump outside reative cell 110 or Aeration fan, jetting type aerator utilizes jetting type hydraulic blow formula air-diffuser to draw air in reative cell 110, for instance is located at the ejector in reative cell 110 and 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 be positioned at aerator 200 water-locator 500 above, and water-locator 500 is connected with waste water inlet 111, and the bottom surface of the contiguous reative cell 110 of aerator 200 is arranged.Water-locator 500 by dispersed for the waste water that entered by waste water inlet 111 in reative cell 110, the aeration of aerator 200 also acts as the effect of stirring waste water and composite bacterial granule sludge 120, so that waste water and composite bacterial granule sludge 120 are fully contacted, improve denitrification effect.
Further, as shown in Figure 3, agitator 600 and guide shell 700 it is further provided with in reative cell 110, the top and bottom of guide shell 700 are opened wide and are positioned at above aerator 200, agitator 600 plays stirring action, guide shell 700 plays guide functions, it is possible to make further the water in reative cell 110 and composite bacterial granule sludge 120 to be fully contacted, composite bacterial granule sludge 120 is in suspended state, improve the exposure level of waste water and composite bacterial granule sludge 120, thus improving denitrogenation of waste water efficiency.
Integrated biological denitrification method according to this utility model embodiment is described below.
Integrated biological denitrification method according to this utility model embodiment includes:
In reative cell, continuously feed waste water, be inoculated with including anaerobic ammonium oxidizing bacteria inner core in described reative cell and the composite bacterial granule sludge of the nitrite bacteria shell being coated on outside described anaerobic ammonium oxidizing bacteria inner core；
Air is supplied in described reative cell, so that described nitrite bacteria is converted into nitrite nitrogen by aerobic for a part of ammonia nitrogen in described waste water, and residue ammonia nitrogen and the described nitrite nitrogen in described waste water enters in described anaerobic ammonium oxidizing bacteria inner core through described nitrite bacteria shell, in order to described residue ammonia nitrogen and described nitrite nitrogen anaerobism are converted into nitrogen and water by described anaerobic ammonium oxidizing bacteria；
Waste water outflow after denitrogenation carries out the three phase separation of water, gas and composite bacterial granule sludge to the degassed precipitate and separate device being positioned at described reative cell.
Described integrated biological denitrification method also includes: regularly blow air in described degassed precipitate and separate device, to avoid described degassed precipitate and separate device to block.
Integrated biological denitrification method according to this utility model embodiment, nitrosation and Anammox reaction carry out in same reative cell, it is possible to simplify equipment, reduction installation space requires and reduction cost is low.And, the composite bacterial granule sludge that employing nitrite bacteria shell and the anaerobic ammonium oxidizing bacteria inner core wrapped up by nitrite bacteria shell are constituted, thus being internally formed natural anaerobic environment at composite bacterial granule sludge, greatly reduce the requirement of aeration precision, and then ensure that the activity of anaerobic ammonium oxidizing bacteria and the stability of technique and system.Additionally, by regularly blowing air in described degassed precipitate and separate device, it is possible to avoid described degassed precipitate and separate device to block.
Therefore, according to the integrated biological denitrification method of this utility model embodiment, there is the advantages such as control is simple, cost is low, denitrification effect is good.
Below with reference to the accompanying drawings integrated biological denitrification method according to this utility model specific embodiment is described.
In specific embodiments more of the present utility model, waste water outflow after described denitrogenation carries out degassed in the degassed district of described degassed precipitate and separate device, waste water after degassed from the bottom stream in described degassed district to the settling zone of described degassed precipitate and separate device in, described degassed after the process that flows up in described settling zone of waste water described in composite bacterial granule sludge precipitate downwards and return in described reative cell from the bottom of described degassed precipitate and separate device, the water wherein separated with described composite bacterial granule sludge overflows to the downflow weir being positioned at described degassed precipitate and separate device and discharges described reative cell.In the process, regularly air is blowed to described settling zone.It is achieved in efficiently separating of the water after composite bacterial granule sludge converts, composite bacterial granule sludge and the nitrogen that changes into and good separating effect.
Advantageously, described integrated biological denitrification method also includes stirring the waste water in described reative cell, it is possible to make the water in reative cell and the rolling of composite bacterial granule sludge further, composite bacterial granule sludge is suspended state, improve the exposure level of waste water and composite bacterial granule sludge, thus improving denitrogenation of waste water efficiency.
Alternatively, described integrated biological denitrification method also includes: discharge mud from the bottom of described reative cell and a part for the described mud discharged returns to the top of described reative cell；The part discharging the water of described reative cell from described downflow weir is supplied in described reative cell together with described waste water.So make waste water carry out secondary denitrogenation, improve denitrification effect further.
Integrated biological denitrification reactor 1 according to this utility model embodiment and integrated biological denitrification method, a tank body is adopted to carry out, and the composite bacterial granule sludge that tank Inoculation is made up of the nitrite bacteria shell of anaerobic ammonium oxidizing bacteria inner core and cladding anaerobic ammonium oxidizing bacteria inner core, thus being internally formed natural anaerobic environment at composite bacterial granule sludge, greatly reduce the requirement of aeration precision, and then ensure that the activity of anaerobic ammonium oxidizing bacteria and the stability of technique and system.Additionally, in wastewater treatment process, regularly blow air in degassed precipitate and separate device, it is possible to avoid degassed precipitate and separate device to block, it is ensured that the separation efficiency of degassed precipitate and separate device and separating effect, and then ensure stability and the treatment effeciency of wastewater treatment.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
Additionally, term " first ", " second " are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, for instance two, three etc., unless otherwise expressly limited specifically.
In this utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or integral；Can be mechanically connected, it is also possible to be electrical connection or each other can communication；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in this utility model as the case may be.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height 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 be merely representative of fisrt feature level height less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment of the present utility model or example.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in one or more embodiments in office or example in an appropriate manner.Additionally, when not conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be carried out combining and combining by those skilled in the art.
Although above it has been shown and described that embodiment of the present utility model, it is understandable that, above-described embodiment is illustrative of, it is not intended that to restriction of the present utility model, above-described embodiment can be changed in scope of the present utility model, revises, replace and modification by those of ordinary skill in the art.
Claims (10)
1. integrated biological denitrification reactor, it is characterised in that including:
Tank body, in described tank body, there is reative cell, composite bacterial granule sludge it is inoculated with in described reative cell, described composite bacterial granule sludge includes anaerobic ammonium oxidizing bacteria inner core and is coated on the nitrite bacteria shell outside described anaerobic ammonium oxidizing bacteria inner core, and described reative cell has waste water inlet and pneumostome；
Aerator, described aerator is located in described reative cell；
Degassed precipitate and separate device, described degassed precipitate and separate device is located in described reative cell, is used for separating gas and water and composite bacterial granule sludge；
Scavenging conduit, one end of described scavenging conduit extend in described degassed precipitate and separate device, for regularly blowing air in described degassed precipitate and separate device to avoid described degassed precipitate and separate device to block.
2. integrated biological denitrification reactor according to claim 1, it is characterised in that the open-top of described tank body is to constitute described pneumostome, or the top of described tank body is provided with the cover pneumostome that described pneumostome is formed thereon.
3. integrated biological denitrification reactor according to claim 1, it is characterised in that the top in described degassed precipitate and separate device is provided with downflow weir, forms overflow launder in described downflow weir, described overflow launder has the outlet led to outside described tank body.
4. integrated biological denitrification reactor according to claim 3, it is characterized in that, described degassed precipitate and separate device includes casing, degassed precipitation chamber is formed in described casing, the bottom in described degassed precipitation chamber has the outlet of composite bacterial granule sludge, the top of described degassed precipitation intracavity is provided with dividing plate, the cross-sectional area of the bottom in described degassed precipitation chamber is gradually reduced along direction from the top down, the top in described degassed precipitation chamber is separated into degassed district and settling zone by described dividing plate, the bottom in described degassed district connect with the bottom of described settling zone in case the waste water after denitrogenation from described reative cell overflow in described degassed district so that from the bottom stream in described degassed district to described settling zone in, precipitation inclined plate or deposition sloped tube it is provided with in described settling zone, described downflow weir is located in described settling zone, one end of described scavenging conduit extend into below described settling zone.
5. integrated biological denitrification reactor according to claim 4, it is characterised in that with the upper edge on the upper edge lower than described dividing plate, the upper edge of the box portion that described dividing plate limits described degassed district and the box portion limiting described settling zone with described dividing plate.
6. integrated biological denitrification reactor according to claim 5, it is characterized in that, the cross section of described casing is rectangle, the lower end of the first longitudinal side wall of the bottom of described casing extends downward beyond the lower end of the second longitudinal side wall of the bottom of described casing, and the lower end of described first longitudinal side wall is overlapping in the vertical direction with the lower end of described second longitudinal side wall.
7. the integrated biological denitrification reactor according to any one of claim 1-6, it is characterised in that also include being located at described tank body outside and the aeration pump being connected with the other end of described aerator and described scavenging conduit or Aeration fan.
8. integrated biological denitrification reactor according to claim 1, it is characterized in that, also including being located in described reative cell and being positioned at the water-locator above described aerator, described water-locator is connected with described waste water inlet, and the bottom surface of the contiguous described reative cell of described aerator is arranged.
9. integrated biological denitrification reactor according to claim 1, it is characterised in that also include being located at the agitator in described reative cell and guide shell, the top and bottom of described guide shell are opened wide.
10. integrated biological denitrification reactor according to claim 1, it is characterized in that, the mud discharging mouth that also includes being located at the bottom of described tank body and also include the mud return line returning to described reative cell top at least partially for the composite bacterial granule sludge will discharged from described mud discharging mouth, one end of described mud return line connects with the top of described reative cell, described mud discharging mouth is connected with described mud return line by mud discharge pipe, and described mud discharge pipe is provided with sludge pump.
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Cited By (4)
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| CN107381808A (en) * | 2017-07-12 | 2017-11-24 | 北京化工大学 | The integrated high-efficiency nitrogen rejection facility and method of a kind of sewage automatic cycle |
| CN107794214A (en) * | 2016-09-05 | 2018-03-13 | 帕克环保技术(上海)有限公司 | The Waste Water Treatment of removal organic polluter and sulphur is removed simultaneously |
| CN110392672A (en) * | 2016-12-16 | 2019-10-29 | 巴格知识产权有限公司 | Aeration reactor with internal solids separation |
| CN111470623A (en) * | 2020-04-30 | 2020-07-31 | 上海复森环境科技发展有限公司 | Membrane lotus root up-flow anaerobic sludge bed reactor system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107794214A (en) * | 2016-09-05 | 2018-03-13 | 帕克环保技术(上海)有限公司 | The Waste Water Treatment of removal organic polluter and sulphur is removed simultaneously |
| CN110392672A (en) * | 2016-12-16 | 2019-10-29 | 巴格知识产权有限公司 | Aeration reactor with internal solids separation |
| CN110392672B (en) * | 2016-12-16 | 2022-05-24 | 巴格知识产权有限公司 | Aerated reactor with internal solids separation |
| CN107381808A (en) * | 2017-07-12 | 2017-11-24 | 北京化工大学 | The integrated high-efficiency nitrogen rejection facility and method of a kind of sewage automatic cycle |
| CN107381808B (en) * | 2017-07-12 | 2020-09-22 | 北京工业大学 | Integrated efficient denitrification device and method for automatic sewage circulation |
| CN111470623A (en) * | 2020-04-30 | 2020-07-31 | 上海复森环境科技发展有限公司 | Membrane lotus root up-flow anaerobic sludge bed reactor system |
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