CN103145239B - Quick enriching reaction equipment for anammox - Google Patents
Quick enriching reaction equipment for anammox Download PDFInfo
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- CN103145239B CN103145239B CN201310077372.XA CN201310077372A CN103145239B CN 103145239 B CN103145239 B CN 103145239B CN 201310077372 A CN201310077372 A CN 201310077372A CN 103145239 B CN103145239 B CN 103145239B
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Abstract
The invention belongs to the field of water pollution control, and particularly relates to quick enriching reaction equipment for anammox. The reaction equipment comprises a reactor, a peristaltic pump and a water inlet box, wherein the reactor is a continuous stirring tank type reactor; a water inlet and a mud pipe are arranged at the bottom part of the reactor; the water inlet box is connected with the water inlet by the peristaltic pump; the top part of the reactor is provided with a thermometer probe, a gas collecting tube and a stirrer shaft seal, so as to ensure that the anaerobic environment is at a strictly-sealed state; and a gas-liquid-solid three-phase separator is arranged in the reactor. By adopting the quick enriching reaction equipment for the anammox, the anammox can be quickly enriched for the anaerobic ammonia oxidizing water treatment technology, the concentration of a substrate in the reactor can be decreased, and therefore, the operating yield and the selectivity of a target product of the reactor can be effectively improved.
Description
Technical field
The invention belongs to water pollution control field, relate in particular to a kind of anaerobic ammonia oxidizing bacteria (
anammox) fast enriching conversion unit.
Background technology
In recent years, along with expanding economy, in industry, agricultural and city domestic sewage, the content of nitrogen phosphoric (especially ammonia nitrogen) is more and more higher.A large amount of nitrogen phosphorus waste water directly enters water body without suitable processing, severe contamination water body environment, cause the serious eutrophication in a large amount of rivers and lakes, coastal red tide frequently occurs, human health has also been brought to serious harm, the contradiction of further having aggravated China's shortage of water resources, is seriously restricting the enforcement of the strategy of sustainable development.Most important pollutent ammonia nitrogen wide material sources wherein, content is large, except sanitary sewage, livestock breeding wastewater, a large amount of trade effluents, as refinery water, food industrial wastewater, percolate from garbage filling field and sludge liquor etc. all contain a large amount of ammonia nitrogens, the waste water of many types not only nitrogen content is high, and in most cases C/N is lower than very, has brought a lot of difficulties to the harmless treatment of ammonia nitrogen.
Traditional biological denitrification method has played certain effect aspect waste water control, but still has a lot of defects.As: complete nitrated need of ammonia nitrogen consumes a large amount of oxygen, increased power consumption; The waste water lower to C/N, needs additional organic carbon source; Whole processing technological flow is longer, and floor space is large and initial cost is high.
The research that deepens continuously along with sewage disposal, several novel biological denitrification process were developed in recent years and applied, anaerobic ammonia oxidation process wherein, because of its less energy-consumption, without aeration, is saved carbon source, sludge yield is few, take up an area little advantage and just receiving increasing concern, but this technique still exists some problems urgently to be resolved hurrily, as: the anaerobic ammonia oxidizing bacteria generation cycle is long, be difficult to enrichment, cause reactor start-up overlong time; Anaerobic ammonia oxidizing bacteria is harsh to waste water quality conditional request, responsive to changes in environmental conditions; The operation of conversion unit is more complicated, and the biological volume of holding is lower, fluctuation of service etc., and wherein, anaerobic ammonia oxidizing bacteria is difficult to enrichment and causes anaerobic ammonia oxidation reactor long having become start time to limit the bottleneck that anaerobic ammonia oxidation process is applied.Therefore, for current anaerobic ammonia oxidizing bacteria, be difficult to the situation of enrichment, research and develop new installation and new technology that rational in infrastructure, anaerobic ammonia oxidizing bacteria is held that rate is high, enrichment fast and had higher position reason ability, become the inevitable approach that sewage water denitrification is processed development.
Summary of the invention
In order to solve above-mentioned technical problem, the object of patent of the present invention is to provide a kind of anaerobic ammonia oxidizing bacteria fast enriching conversion unit, this equipment can be Anammox water technology fast enriching anaerobic ammonia oxidizing bacteria, concentration of substrate in reactor be can reduce, thereby object product operational yield and the selectivity of reactor effectively improved.
In order to realize above-mentioned object, the present invention has adopted following technical scheme:
A kind of anaerobic ammonia oxidizing bacteria fast enriching conversion unit, this conversion unit comprises reactor, peristaltic pump and inlet chest, reactor adopts continuous stirred tank reactor, and the bottom of reactor is provided with water-in and shore pipe, and inlet chest is connected with water-in by peristaltic pump, reactor head guarantees anaerobic environment strict seal, is provided with thermometer probe, effuser, agitator shaft seal at top, in reactor, be provided with gas-liquid-solid triphase separator, gas-liquid-solid triphase separator comprises annular gas skirt and ring baffle, the top of annular gas skirt is connected with reactor cavity top, on annular gas skirt from top to bottom has, lower two staged enlargings, the top of described ring baffle arranges in annular gas skirt, upper, the corresponding position of lower two staged enlargings has the first enlarging and the second enlarging, make to form between ring baffle and described annular gas skirt the first backflow seam, the bottom of ring baffle is vertical baffle, the suitable formation of the bottom of vertical baffle and reactor wall is closed up, between closing in and reactor wall, form the second backflow seam, described ring baffle inner side is reaction zone, in reaction zone, be provided with mechanical stirrer, mechanical stirrer top and reactor joint portion guarantee the stopping property of reaction zone by described agitator shaft seal, described water-in and shore pipe are arranged on the bottom of reaction zone, the top of reaction zone is provided with effuser, effuser is connected with water seal arrangement, and water seal arrangement is connected with wet flow indicator, the space that described annular gas skirt, ring baffle and reactor wall form is settling region, and on the sidewall of settling region, along being highly on average provided with stopple coupon, the top of settling region is provided with rising pipe.
As preferably, this conversion unit also comprises heating unit, and heating unit is contained on the outside surface of reactor.As preferred again, described heating unit, be connected with temperature controller.
As preferably, described mechanical stirrer adopts fan-shaped turbine agitator.
The integral structure that the present invention adopts hybrid reaction district and depositing separation area to build jointly, inside establishes gas-liquid-solid three-phase separating device; By agitator, stir, make mixed solution in reaction zone in turbulent state, reduce interfacial layer thickness and the thermograde of flocs unit particle, improve rate of mass transfer; Employing has the fan-shaped turbine agitator of certain load-carrying capacity and the ability of mixing, impels mud to reflux through the seam that refluxes; Reaction zone inwall is established vertical baffle plate, can avoid because stirring causes mixed solution swirling flow.Patent of the present invention can effectively improve the Anammox mud volume of holding, and is beneficial to cultivation granule sludge, thereby realizes the fast enriching of Anammox, finally makes system reach good denitrification effect, than other treatment facilities, has absolute predominance.It is high that patent of the present invention has processing efficiency, rational in infrastructure, stable, flexible operation, and capacity utilization is high, the advantage such as the high and working cost of the biological volume of holding is lower.
Patent of the present invention is set to cylindrical to reduce waterpower dead band, and device top is assurance anaerobic environment strict seal, and top is provided with agitator shaft seal, effuser, thermometer probe.Device inside is provided with gas-liquid-solid three-phase separating device, is reaction zone and settling region integral structure.Reactor is provided with whipping appts, and agitator top and reactor joint portion guarantee the stopping property of reaction zone by shaft seal, and in conversion unit, the volume ratio of reaction zone and settling region is arranged in the scope of 1.5-2.0.Patent of the present invention is provided with water inlet pipe and shore pipe in bottom, reaction zone, and reaction zone inwall arranges vertical baffle plate, can avoid the mixed solution swirling flow causing due to stirring.Mud passes back into settling region through the seam that refluxes, on settling region sidewall, edge is highly on average provided with stopple coupon, water leg place on top, settling region is provided with rising pipe, and bottom, settling region is set to taper and is beneficial to sludge reflux and can holds back aging mud, optimizes outlet effect.Whole reaction unit outside is provided with heating unit, and is controlled at 35 ± 1 ℃ by temperature controller.Manual simulation's waste water pumps into reactor from distribution reservoir, by regulating peristaltic pump to control flow.
The slave part of patent of the present invention
1. collection and confinement of gases and transmitting device
The gas producing in treating processes for assurance system can be able to discharge timely smoothly, can guarantee the anaerobic condition of conversion unit again simultaneously, so should there be a water seal arrangement between gas purging mouth and wet test meter, the caliber of gas should be enough large, avoids the solid (or foam) of gas entrainment to produce obstruction.Experience shows to have in water seal the accumulation of water of condensation.Therefore, it is essential in water seal, having an outlet of getting rid of water of condensation, to keep water level certain in tank.
2. mud discharging device
Generally, along with the increase of sludge concentration in reactor, treatment effect can improve, but mud surpasses certain concentration, should get rid of unnecessary mud to optimize outlet effect.Therefore, spoil disposal is answered every the corresponding time in the reaction zone in equipment.General mud discharging should be followed the scale of prior foundation, and at the mud of certain time interval (as every first quarter moon) discharge certain volume, this volume should equal the amount accumulating during this.Spoil disposal frequency also can determine according to the treatable amount of sludge treatment equipment, and method is the curve spoil disposal distributing according to definite sludge concentration more reliably.It should be discharge SA mud and best high-activity particle mud is retained in reaction zone.Patent of the present invention is established a shore pipe in the bottom of reaction zone, also can be used as sample stopple coupon simultaneously.
3. gas-liquid-solid three-phase separating device
Patent of the present invention inside is provided with gas-liquid-solid three-phase separating device, this device can effectively be realized the delay of mud in reaction zone, realized sludge retention time (SRT) > hydraulic detention time (HRT), thereby improved the sludge concentration in reactor, effectively improved the biological volume of holding of patent of the present invention.
4. whipping appts
The churned mechanically mode of patent utilization of the present invention makes anaerobic ammonia oxidizing bacteria fully mix with substrate, while is for hydraulic flow state good in assurance equipment and impel sludge reflux, and agitator adopts the fan-shaped turbine agitator with certain load-carrying capacity and the ability of mixing.This agitator can effectively impel mud to pass back into reaction zone through the seam that refluxes, and guarantees good hydraulic flow state in reactor.
5. material selects
In test and actual production, can select as the case may be corresponding material: laboratory bench scale can be selected the materials such as synthetic glass or PVC sheet material, pilot scale or can adopt steel and concrete structure or brick mix structure etc. more on a large scale.
6. heat and lagging facility
Treatment effect is better under mesophilic condition to consider anaerobic ammonia oxidizing bacteria in patent of the present invention, so by be entangled in the surface heated mode of equipment reactor with heating wire, keep the temperature of whole treatment system with temperature controller in the scope of 35 ± 1 ℃.
The startup of patent of the present invention and steady running part
1. the assembling of equipment
In order to obtain high processing efficiency, this equipment and some other affiliated facilities must be coupled together, form a set of complete technique.These affiliated facilities comprise itself, such as being wound around in its surface homo(io)thermism that nichrome wire couples together itself and temperature controller to guarantee whole system again at 35 ± 1 ℃.Also having some is beyond equipment, as distribution reservoir, water inlet peristaltic pump, wet test meter coupled together, thereby these enclosure group have been formed to a set of complete water technology with pipeline together.In the middle of when venting port is connected with gas quantifier, to pass through a water-sealed drainage bottle, in water-sealed drainage bottle, be filled with the clear water of certain water level.
2. the startup of equipment
After the work such as device assembles complete, can prepare to start reactor.The startup of reactor is mainly the certain density anaerobic sludge of inoculation, then water inlet operation.The appropriate to the occasion employing of device start manual simulation waste water to be to reduce the impact of other factors, verifies while realizing the key parameter control condition of anaerobic ammonia oxidizing bacteria fast enriching and steady running when patent of the present invention starts and guarantee anaerobic ammonia oxidizing bacteria population advantage, maintains the key parameter control condition of anaerobic ammonia oxidizing bacteria activity.
3. the definite and engineering regulation and control of the monitoring processing parameter of effluent index in equipment running process
In equipment running process, some pollutent indexs are as COD, NH
4 +-N, NO
3 --N, NO
2 -the parameters such as-N, TN and aerogenesis total amount can reflect that patent of the present invention is to the treatment effect of waste water and running status, by monitoring can be from macroscopical judgment device the enrichment condition of anaerobic ammonia oxidizing bacteria, pollutent (particularly ammonia nitrogen) and with the changing conditions of control condition.MLSS, SV, SVI tentatively in judgment device the settling property of mud with the variation of control condition and the form of anaerobic ammonia oxidizing bacteria mud under enrichment condition and structure, form.By optimizing the running status of conversion unit to pH value, basicity, redox potential (ORP) and the isoparametric regulation and control of DO, guarantee the efficient removal of ammonia nitrogen.
4. the steady running of equipment
After reactor start-up success, by stablizing maintenance operation, guarantee that various operating parameters are stable.Can investigate patent of the present invention application in practice by pumping into the water outlet of short distance nitration pilot scale reaction unit afterwards.
Patent of the present invention compared with prior art has the following advantages:
1. realize the fast enriching of anaerobic ammonia oxidizing bacteria, thereby realized quick startup and the steady running of processing the novel anaerobic ammonia oxidation process (as Canon technique) of low-carbon (LC) ratio wastewater.The present invention can reduce concentration of substrate in reactor, thereby effectively improves object product operational yield and the selectivity of reactor; The integral structure that adopts hybrid reaction district and depositing separation area to build jointly, inside establishes gas-liquid-solid three-phase separating device; By agitator, stir, make mixed solution in reaction zone in turbulent state, reduce interfacial layer thickness and the thermograde of flocs unit particle, improve rate of mass transfer; Employing has the fan-shaped turbine agitator of certain load-carrying capacity and the ability of mixing, impels mud to reflux through the seam that refluxes; Reaction zone inwall is established vertical baffle plate, can avoid because stirring causes mixed solution swirling flow.Patent of the present invention can effectively improve the Anammox mud volume of holding, and is beneficial to cultivation granule sludge, thereby realizes the fast enriching of Anammox, finally makes system reach good denitrification effect.
2. save organic carbon source and aeration rate, without additionally adding acid-base neutralisation reagent, excess sludge discharge amount is few, and working cost is low.Patent utilization anaerobic ammonia oxidizing bacteria of the present invention carries out nitrogen and removes, and anaerobic ammonia oxidizing bacteria can directly be used as ammonia nitrogen the electron donor of anti-nitration reaction in reaction process, does not therefore need to add in addition carbon source, also without oxygen supply energy consumption.Because one step of ammonia oxidation in anaerobic ammonium oxidation process completes, produce acid amount and greatly decline, produce alkali number and be down to zero, thereby saved the considerable expense that additionally adds acid-base neutralisation reagent.And because the anaerobic ammonia oxidizing bacteria generation cycle is long, the excess sludge discharge amount of conversion unit is less.
3. the biological volume of holding is high.The gas-liquid-solid triphase separator that patent of the present invention arranges by inside has effectively been realized the delay of mud in reaction zone, realized sludge retention time (SRT) > hydraulic detention time (HRT), thereby improved the sludge concentration in reactor, and passed through N
2shearing and the stirring action of fan-shaped turbine agitator form the sludge retention amount in the further enhanced system of granule sludge, and the Anammox function of reinforcing particle mud, thus further strengthen the treatment effect of patent of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of patent of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
A kind of anaerobic ammonia oxidizing bacteria fast enriching conversion unit as shown in Figure 1, this conversion unit comprises reactor 1, heating unit 15, peristaltic pump 3 and inlet chest 2, reactor 1 adopts continuous stirred tank reactor 1, the bottom of reactor 1 is provided with water-in 9 and shore pipe 10, and inlet chest 2 is connected with water-in 9 by peristaltic pump 3.Described heating unit 15 is contained on the outside surface of reactor 1, heating unit 15 is connected with temperature controller 16, consider the anaerobic ammonia oxidizing bacteria good feature for the treatment of effect under mesophilic condition, with temperature controller 16, control the temperature variation of heating unit 15, keep the temperature of reactor 1 within the scope of 35 ± 1 ℃.Reactor 1 top guarantees anaerobic environment strict seal, is provided with thermometer probe, effuser 15, agitator shaft seal at top, in reactor 1, be provided with gas-liquid-solid triphase separator, gas-liquid-solid triphase separator comprises annular gas skirt 5 and ring baffle 6, the top of annular gas skirt 5 is connected with reactor 1 cavity top, on annular gas skirt 5 from top to bottom has, lower two staged enlargings 51, 52, the top of described ring baffle 6 arranges in annular gas skirt 5, upper, lower two staged enlargings 51, 52 corresponding position has the first enlarging 61 and the second enlarging 62, make to form between ring baffle 6 and described annular gas skirt 5 the first backflow seam 11, the bottom of ring baffle 6 is vertical baffle 63, the bottom of vertical baffle 63 and the suitable formation of reactor 1 inwall close up 64, between closing in 64 and reactor 1 inwall, form the second backflow seam 12.Described ring baffle 6 inner sides are reaction zone 7, are provided with mechanical stirrer 4 in reaction zone 7, and mechanical stirrer 4 adopts fan-shaped turbine agitator.Mechanical stirrer 4 tops and reactor 1 joint portion guarantee the stopping property of reaction zone 7 by described agitator shaft seal, described water-in 9 and shore pipe 10 are arranged on the bottom of reaction zone 7, the top of reaction zone 7 is provided with effuser 15, effuser 15 is connected with water seal arrangement 17, and water seal arrangement 17 is connected with wet flow indicator 18.Described annular gas skirt 5, ring baffle 6 are settling region 8 with the space that reactor 1 inwall forms, and on the sidewall of settling region 8, along being highly on average provided with stopple coupon 19, the top of settling region 8 is provided with rising pipe 13.
This equipment is in operational process, by peristaltic pump 3, from distribution reservoir, accurately substrate (manual simulation's waste water that ammonia nitrogen and nitrite ratio are 1:1.2 or the water outlet of short distance nitration system) is pumped into the water-in 9 of this device bottom, waste water effect by mechanical stirrer 4 in the reaction zone 7 of device interior fully mixes with Anammox mud, then by the first backflow seam 11, pass back into settling region, finally from the shore pipe 10 of this equipment, discharge.The gas of reaction zone 7 interior generations is discharged from device top venting hole 14 by gas-liquid-solid triphase separator, then by the gas production rate of wet test meter 18 measurable systems.
Claims (4)
1. an anaerobic ammonia oxidizing bacteria fast enriching conversion unit, it is characterized in that: this conversion unit comprises reactor (1), peristaltic pump (3) and inlet chest (2), reactor (1) adopts continuous stirred tank reactor (1), the bottom of reactor (1) is provided with water-in (9) and shore pipe (10), and inlet chest (2) is connected with water-in (9) by peristaltic pump (3), reactor (1) top guarantees anaerobic environment strict seal, is provided with thermometer probe, agitator shaft seal at top, reactor is provided with gas-liquid-solid triphase separator in (1), gas-liquid-solid triphase separator comprises annular gas skirt (5) and ring baffle (6), the top of annular gas skirt (5) is connected with reactor (1) cavity top, on annular gas skirt (5) from top to bottom has, lower two staged enlargings (51, 52), the top of described ring baffle (6) arranges in annular gas skirt (5), upper, lower two staged enlargings (51, 52) corresponding position has the first enlarging (61) and the second enlarging (62), make to form between ring baffle (6) and described annular gas skirt (5) the first backflow seam (11), the bottom of ring baffle (6) is vertical baffle (63), the suitable formation closing in of the bottom of vertical baffle (63) and reactor (1) inwall (64), between closing in (64) and reactor (1) inwall, form the second backflow seam (12), described ring baffle (6) inner side is reaction zone (11), in reaction zone (11), be provided with mechanical stirrer (4), mechanical stirrer (4) top and reactor (1) joint portion guarantee the stopping property of reaction zone (11) by described agitator shaft seal, described water-in (9) and shore pipe (10) are arranged on the bottom of reaction zone (11), the top of reaction zone (11) is provided with effuser (14), effuser (14) is connected with water seal arrangement (17), and water seal arrangement (17) is connected with wet flow indicator (18), described annular gas skirt (5), ring baffle (6) are settling region (8) with the space that reactor (1) inwall forms, on the sidewall of settling region (8), along being highly on average provided with stopple coupon (19), the top of settling region (8) is provided with rising pipe (13).
2. a kind of anaerobic ammonia oxidizing bacteria fast enriching conversion unit according to claim 1, is characterized in that: this conversion unit also comprises heating unit (15), and heating unit (15) is contained on the outside surface of reactor (1).
3. a kind of anaerobic ammonia oxidizing bacteria fast enriching conversion unit according to claim 1, is characterized in that: heating unit (15) is connected with temperature controller (16).
4. a kind of anaerobic ammonia oxidizing bacteria fast enriching conversion unit according to claim 1, is characterized in that: mechanical stirrer (4) adopts fan-shaped turbine agitator.
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| CN201310077372.XA CN103145239B (en) | 2013-03-11 | 2013-03-11 | Quick enriching reaction equipment for anammox |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310077372.XA CN103145239B (en) | 2013-03-11 | 2013-03-11 | Quick enriching reaction equipment for anammox |
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| CN103145239A CN103145239A (en) | 2013-06-12 |
| CN103145239B true CN103145239B (en) | 2014-10-29 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396096A (en) * | 2016-11-04 | 2017-02-15 | 苏州依斯倍环保装备科技有限公司 | Method and device for culturing anaerobic granular sludge |
| CN108358312B (en) * | 2018-03-29 | 2024-06-07 | 安徽久吾天虹环保科技有限公司 | Anaerobic reactor for sewage treatment |
| CN108928919A (en) * | 2018-09-20 | 2018-12-04 | 苏州清然环保科技有限公司 | Anammox water treatment facilities |
| CN110734132A (en) * | 2019-08-28 | 2020-01-31 | 天津大学 | Short-term rapid enrichment reaction device for anaerobic ammonium oxidation bacteria |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201058827Y (en) * | 2007-06-05 | 2008-05-14 | 浙江大学 | Highly effective anaerobic ammonia oxidation reactor |
| CN101195803A (en) * | 2007-12-25 | 2008-06-11 | 浙江大学 | Anaerobic ammonoxidation bacterium concentrating device |
| CN102531161A (en) * | 2010-12-13 | 2012-07-04 | 中国科学院城市环境研究所 | Rapid enrichment reaction device for denitrifying phosphorus removing bacteria |
| CN203112585U (en) * | 2013-03-11 | 2013-08-07 | 丽水学院 | Anammox quick enrichment and reaction equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5218807B2 (en) * | 2007-05-25 | 2013-06-26 | アイシン精機株式会社 | Culture composition |
| JP2011240327A (en) * | 2010-04-20 | 2011-12-01 | Kojima Kagaku Yakuhin Kk | Treatment method for wastewater containing nitrate nitrogen |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201058827Y (en) * | 2007-06-05 | 2008-05-14 | 浙江大学 | Highly effective anaerobic ammonia oxidation reactor |
| CN101195803A (en) * | 2007-12-25 | 2008-06-11 | 浙江大学 | Anaerobic ammonoxidation bacterium concentrating device |
| CN102531161A (en) * | 2010-12-13 | 2012-07-04 | 中国科学院城市环境研究所 | Rapid enrichment reaction device for denitrifying phosphorus removing bacteria |
| CN203112585U (en) * | 2013-03-11 | 2013-08-07 | 丽水学院 | Anammox quick enrichment and reaction equipment |
Non-Patent Citations (2)
| Title |
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| JP特开2008-290026A 2008.12.04 |
| JP特开2011-240327A 2011.12.01 |
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Granted publication date: 20141029 Termination date: 20170311 |