CN102701437A - Integrated aerobic granular sludge dynamic membrane bioreaction wastewater treatment device - Google Patents
Integrated aerobic granular sludge dynamic membrane bioreaction wastewater treatment device Download PDFInfo
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- CN102701437A CN102701437A CN2012102128867A CN201210212886A CN102701437A CN 102701437 A CN102701437 A CN 102701437A CN 2012102128867 A CN2012102128867 A CN 2012102128867A CN 201210212886 A CN201210212886 A CN 201210212886A CN 102701437 A CN102701437 A CN 102701437A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses an integrated aerobic granular sludge dynamic membrane bioreaction wastewater treatment device, which comprises a membrane bioreactor (1) loaded with aerobic granular sludge and is characterizes in that the membrane bioreactor is provided with a wastewater inlet (2), a filtering water outlet (3) and a direct water outlet (4), a membrane component (5) is arranged in the membrane bioreactor, a hollow structure is arranged in the membrane component (5), the membrane component (5) is communicated with the filtering water outlet (3) via a filtering pipeline, both of the highest height of the membrane component (5) and the height of a liquid level of the direct water outlet (4) are lower than the height of the liquid level of the filtering water outlet, and a lower end of the membrane component is provided with a micropore aerator (6). The device is economical, high-efficient and stable in wastewater treatment, and the reactor is compact in structure and wide in application range, occupies small area, and is flexible to operate.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of integrative aerobic particle sludge dynamic film bio reaction waste treatment unit.
Background technology
Membrane bioreactor (MBR) has obtained developing rapidly and widespread use as a kind of efficient, compact biological wastewater treatment technology in recent years.Yet there are two subject matters in this technology in practical application: expensive and film pollutes.At present, MBR film study on pollution control is mainly concentrated on two aspects both at home and abroad: to the optimization of mould material itself and to the optimization of active sludge system.
Aspect mould material optimization, an important development direction in recent years is to adopt cheap coarse net mould material (like nylon wire, woven wire, non-woven fabrics etc.) to substitute traditional micro-filtration or ultra-filtration membrane, and this type MBR often is called as " bioreactor of dynamic membrane ".In operational process, the surface of coarse net mould material can form one deck microbial film gradually, as filtering layer actual in the system.The hole of this coarse net mould material is big, filtration resistance is less, and with low cost.But the subject matter that this technology exists at present is that solid suspension material (SS) content is higher in the water outlet.Especially finish before the back forms with new microbial film in the back flushing of film surface, the mud in small, broken bits in the reactor drum can directly pass mould material and get in the water outlet, not only can reduce effluent quality but also can cause that the membrane module inner chamber stops up, and reduces the membrane filtration area of reality.
Aspect the optimization of active sludge character, an important directions is to adopt aerobic particle mud to substitute conventional flco active sludge.Because aerobic particle mud has better intensity and anti-compression properties than flco mud, so it has higher porosity and lower pollution resistance at the microbial film that the film surface forms.In addition, because there is certain oxygen-starved area in aerobic particle mud inside, help the growth of denitrifying bacterium, so the denitrogenation ability of granule sludge-membrane bioreactor system also is superior to common MBR.Yet, in this system mould material cost higher with less stable granule sludge be two main restraining factors.At present, still lack real efficient, low-cost, stable biological wastewater treatment technology.
Summary of the invention
The object of the invention is to provide a kind of integrative aerobic particle sludge dynamic film bio reaction waste treatment unit, has solved efficient, low-cost, the stable biological wastewater treatment problem of sewage shortage in the prior art.
In order to solve these problems of the prior art, technical scheme provided by the invention is following:
A kind of integrative aerobic particle sludge dynamic film bio reaction waste treatment unit; Comprise the membrane bioreactor that aerobic particle mud is housed; It is characterized in that said membrane bioreactor is provided with water intake, filters out the mouth of a river and direct water outlet; In the said membrane bioreactor membrane module is set, said membrane module inside is hollow structure, in the membrane module through filter pipeline with filter out the mouth of a river and be communicated with; And the maximum height of membrane module all is lower than the liquid level that filters out the mouth of a river with the liquid level of direct water outlet, and said membrane module lower end is provided with micro-hole aerator.
Preferably, said micro-hole aerator is connected with air pump through aerating pipelines, on the said aerating pipelines gas meter is set.
Preferably, said membrane bioreactor also is provided with riser and thief hole.
Preferably, said membrane bioreactor apart from the top 1/10 highly the place riser is set; Apart from the bottom 3/4 height for reactor place for filtering out the mouth of a river; 1/2 highly is provided with direct water outlet apart from the bottom; 1/10 highly locates to be provided with the bottom thief hole apart from the bottom.
Preferably, said water intake is connected with intake pump through suction culvert.
Preferably; Said device also comprises program timer; Be provided with on the said filter pipeline and filter out the water management SV; Be provided with on the outlet pipeline of said direct water outlet and directly go out the water management SV, said program timer respectively with filter out water management SV, intake pump, directly go out the water management SV and be connected control with air pump and open and close.
Preferably, said membrane bioreactor is a round shape, and the aspect ratio of said membrane bioreactor is 5:1 ~ 15:1.
Preferably, said membrane module is made up of synthetic glass inside casing and the mould material that covers synthetic glass inside casing surface, and it is 50 ~ 200 μ m coarse nets that said mould material adopts the aperture.
Preferably, said micro-hole aerator is arranged on the bottom of membrane bioreactor, and said micro-hole aerator distributes in the bottom of membrane bioreactor circlewise.
Another object of the present invention is to the method that provides a kind of described integrative aerobic particle sludge dynamic film bio reaction waste treatment unit to carry out water treatment, it is characterized in that said method comprising the steps of:
(1) waste water gets in the membrane bioreactor through water intake, in membrane bioreactor waste water fully contact with aerobic particle mud and pollutent wherein by biological degradation;
(2) water after handling gets into that membrane module is inner discharges after through the dynamic membrane filtering on membrane module surface, holds back in the water after the processing granule sludge in membrane bioreactor; Perhaps stop directly to discharge membrane bioreactor according to the SBR operation scheme behind the aeration.
The present invention is a kind of new solution of handling waste water; In conjunction with aerobic particle mud and bioreactor of dynamic membrane characteristics separately with both organic coupling; Through technology and reactor drum are optimized design; Realize efficient, economy, the stabilizing treatment of waste water, belong to the biological wastewater treatment technology field.
To the characteristics of above Technology with the deficiency that exists separately; The present invention proposes a kind of new coupling treatment unit---integrative aerobic particle sludge dynamic film bio reaction waste treatment unit; When significantly reducing processing cost, realize that the efficient stable of waste water is handled.
Membrane bioreactor is the integrated high-efficiency reactor drum in the technical scheme of the present invention; Through designing unique integrated high-efficiency reactor drum and optimizing operation scheme and processing condition; Realize alleviating of steady running and the film pollution of aerobic particle mud in reaction, guarantee effluent quality preferably simultaneously.
It is the barrel type reactor of 5:1 ~ 15:1 that technical scheme of the present invention adopts aspect ratio.The reactor drum side is provided with 1 place's water-in and is no less than the outlet of 4 places, comprising: about 1/10 highly locates to be provided with riser 7 apart from the top; Apart from the bottom about 3/4 height for reactor place for filtering out the mouth of a river 3; 1/2 highly is direct water outlet 4 apart from the bottom; About 1/10 highly locates to be provided with bottom thief hole 8 apart from the bottom; The difference that filters out the mouth of a river 3 and other outlets is, filters out the mouth of a river 3 and directly is connected with membrane module 5 through pipeline.
Water intake mode adopts water inlet continuously, and hydraulic detention time is 6 ~ 10h, and the membrane filtration flux is 20 ~ 80L/m
2.h; Effluent adopting filters out the mode that the mouth of a river 3 drainings and direct water outlet 4 drainings combine.Wherein, filter out the mouth of a river 3 according at interval water outlet and stop water outlet repeatedly of certain hour.Directly water outlet 4 stops aeration and water outlet after sedimentation for some time at reactor drum; Every day 1 ~ 2 time (stop when stopping aeration into water with filter out the mouth of a river 3 drainings); Concrete steps are: count from just stopping aeration, behind 2 ~ 5min standing sedimentation, open direct water outlet 4 drainings; Close direct water outlet 4 behind the 10min, recover normally to intake and filter out the mouth of a river 3 drainings.The mode water outlet of flow by gravity is all adopted in all drainings, need not extra exerting pressure or other motivating forces, and controls break-make through SV.Inlet and outlet water and aeration time are all accurately controlled through the time programming unit.
Through the annular aerator uniform aeration of reactor bottom setting, and through regulating aeration rate to guarantee surperficial ascending gas flow velocity V within the specific limits: 1cm/s < V < 4cm/>s.The aeration rate size is regulated through gas meter.
Stable existence has greater particle size and than the aerobic particle mud of dense structure, these granule sludges are not easy to pass the coarse net mould material in the reactor drum, and therefore, effluent SS concentration is lower.In addition, the biological membranous layer that mould material surface forms has higher perviousness, its porosity can reach in traditional flco mud MBR reactor drum more than 1.5 times.
With respect to scheme of the prior art, advantage of the present invention is: can realize economic, efficient, stable wastewater treatment, have better practicality and flexibility of operation.
In sum, integrative aerobic particle sludge-bioreactor of dynamic membrane technology that the present invention proposes is a kind of economy, efficient, stable wastewater treatment new technology, and structure of reactor is compact, and required floor space is little, flexible operation, wide accommodation.Therefore, present technique all has good application prospects in real life sewage and Industrial Wastewater Treatment.Moreover, the present invention also has good reference value for the development and application of anaerobic grain sludge-membrane Bio-reactor Technology.The present invention is implemented in first and inoculates aerobic particle mud in the Dynamic Membrane reactor assembly and keep its steady running through this semicontinuous stream operation scheme, and realizes WWT through this coupling technique.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is the structural representation of embodiment of the invention integrative aerobic particle sludge dynamic film bio reaction waste treatment unit.
Wherein: 1 is membrane bioreactor; 2 is water-in; 3 for filtering out the mouth of a river; 4 is direct water outlet; 5 is membrane module; 6 is micro-hole aerator; 7 is riser; 8 is the bottom thief hole; 9 is program timer; 21 is intake pump; 61 is air pump; 62 is gas meter; 31 for filtering out the water management SV; 41 for directly going out the water management SV.
Embodiment
Below in conjunction with specific embodiment such scheme is further specified.Should be understood that these embodiment are used to the present invention is described and are not limited to limit scope of the present invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment
As shown in Figure 1; This integrative aerobic particle sludge dynamic film bio reaction waste treatment unit; Comprise the membrane bioreactor 1 that aerobic particle mud is housed, said membrane bioreactor is provided with water intake 2, filters out the mouth of a river 3 and direct water outlet 4, and membrane module 5 is set in the said membrane bioreactor; Said membrane module 5 inside are hollow structure; In the membrane module 5 through filter pipeline with filter out the mouth of a river 3 and be communicated with, and the liquid level of the maximum height of membrane module 5 and direct water outlet 4 all is lower than the liquid level that filters out the mouth of a river 3, said membrane module 5 lower ends are provided with micro-hole aerator 6.
Said micro-hole aerator 6 is connected with air pump 61 through aerating pipelines, and gas meter 62 is set on the said aerating pipelines.Said membrane bioreactor 1 also is provided with riser 7 and thief hole 8.
Said membrane bioreactor 1 apart from the top 1/10 highly the place riser is set; Apart from the bottom 3/4 height for reactor place for filtering out the mouth of a river; 1/2 highly is provided with direct water outlet apart from the bottom; 1/10 highly locates to be provided with the bottom thief hole apart from the bottom.Said water intake 2 is connected with intake pump 21 through suction culvert.Said device also comprises program timer 9; Be provided with on the said filter pipeline and filter out water management SV 31; Be provided with on the outlet pipeline of said direct water outlet 4 and directly go out water management SV 41, said program timer 9 respectively with filter out water management SV 31, intake pump 21, directly go out water management SV 41 and be connected control with air pump 61 and open and close.
Said membrane bioreactor 1 is a round shape, and the aspect ratio of said membrane bioreactor 1 is 5:1 ~ 15:1.Said membrane module 5 is made up of synthetic glass inside casing and the mould material that covers synthetic glass inside casing surface, and it is 50 ~ 200 μ m coarse nets that said mould material adopts the aperture.Said micro-hole aerator 6 is arranged on the bottom of membrane bioreactor 1, and said micro-hole aerator 6 distributes in the bottom of membrane bioreactor 1 circlewise.
Adopting effective volume is the integrated high-efficiency reactor drum 1 of 4L, and the direct inoculation granule sludge is used for the processing of manual simulation's waste water.Reactor assembly substruction and flow process are as shown in Figure 1.Reactor drum 1 is the synthetic glass tubular structure, cylindrical shell total height 70cm, internal diameter 4.5cm.Membrane module 5 is placed on inside reactor, adopts the nylon wire mould material, mean pore size 70 μ m, membrane area 0.02m2.A water-in 2 and four water outlets are established in reactor drum 1 side, and each water outlet is followed successively by apart from the distance of reactor bottom: 65cm, 50cm, 35cm, 5cm.In the reactor drum operational process, waste water gets into reactor drum 1 through intake pump 21 from water-in 2.Waste water after most of the processing earlier through membrane module 5, flows out through the mouth of a river 3 that filters out that is attached thereto in reactor drum 1 again.The draining of water outlet 3 adopts the mode of the disconnected 10min of logical 10min-to move by SV 31 controls, realizes intermittently water outlet.Waste water after a small amount of the processing is regularly discharged through direct water outlet 4, and the standing sedimentation time is 2min before draining every day 1 time, draining, and water discharge time 8min is by SV 41 controls.Aeration is provided through the micro porous aeration head 6 that is installed in reactor bottom by air pump 61, and aeration rate is controlled at about 300L/h by gas meter 62, its corresponding surperficial ascending gas flow velocity V=1.3cm/s.
It is carbon source preparation artificial wastewater that sodium acetate is adopted in water inlet, and water inlet COD is 400mg/L, and control HRT is 6.7h in the operational process.Inoculation granule sludge median size is about 0.8mm, and seed sludge concentration is 5g/L.After about 10 days of operation, system reaches steady state.COD and NH4+-N average removal rate reach respectively more than 91% and 95%, and water outlet is limpid, and the granule sludge median size slightly reduces and maintains about 0.5mm.Compare with the bioreactor of dynamic membrane based on flco mud of routine, under same operation condition, film pollutes speed and significantly slows down, and required back flushing number of times comparison reduces half according to reactor drum in the run duration, and contains SS in the water outlet seldom.
Technical process: waste water enters into membrane bioreactor 1 through water pump 21 and water-in 2; In membrane bioreactor 1 waste water fully contact with aerobic particle mud and pollutent wherein by biological degradation; Discharge reactor drum (two kinds of drainage patterns combine) through the waste water after the biological treatment through dual mode:
Mode one: water after treatment gets into membrane module 5 inside after through the dynamic membrane filtering on membrane module 5 surface, and granule sludge is retained down by Dynamic Membrane and turns back in the membrane bioreactor 1; The water outlet that gets in the membrane module 5 is discharged through filtering out the mouth of a river 3 through the strainer tube road.31 controls realize intermittent drainages with SV through program timer 9 to filter out the mouth of a river 3 drainings, promptly with SV 31 break-makes each 1 time as a cycle of operation, SV 31 logical 10 ~ 30min in each cycle, disconnected 10 ~ 30min.Get into next cycle behind each end cycle immediately, successively.
Mode two: water is after treatment discharged reactor drum according to the SBR operation scheme, and concrete steps are: every day is (1 ~ 2 time/day) at a fixed time, through the time set of program timer 9, stops intake pump 21 water inlets simultaneously and filters out the mouth of a river 3 drainings; Count from just stopping aeration, behind 2 ~ 5min standing sedimentation, open direct water outlet 4 drainings through program timer 9; Close direct water outlet 4 behind the 10min, recovery intake pump 21 is normally intake and is filtered out the mouth of a river 3 drainings.
Time programming: all time series operations (comprising the keying of SV and air pump, water pump) are all controlled through the setting of a series of time points by program timer in this technology.Concrete mode is referring to above description.
Treatment effect: compare with the activated sludge process of routine; Owing to adopt compact structure and combine granule sludge and the advantage of membrane bioreactor; This technology unit reactor volume processing power can improve about more than 50%; And can need not equalizing tank and second pond, the reactor drum floor space reduces more than 50%, also need not to carry out mud and refluxes; Therefore significantly reduce investment and running cost, can reach the related request of China's city domestic sewage comprehensive discharge standard through the waste water after this art breading basically.Compare with conventional membrane biological reactor process; Investment has not only been practiced thrift in the employing of Dynamic Membrane greatly; And owing to adopt the flow by gravity filter type to substitute the filter type of pressure-type; Also further reduced running cost, reach with the similar treatment effect of membrane bioreactor in, the processing total cost of water per ton can reduce about more than 40%.
Above-mentioned instance only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalent transformations that spirit is done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (10)
1. integrative aerobic particle sludge dynamic film bio reaction waste treatment unit; Comprise the membrane bioreactor (1) that aerobic particle mud is housed; It is characterized in that said membrane bioreactor is provided with water intake (2), filters out the mouth of a river (3) and direct water outlet (4); Membrane module (5) is set in the said membrane bioreactor; Said membrane module (5) inside is hollow structure; In the membrane module (5) through filter pipeline with filter out the mouth of a river (3) and be communicated with, and the liquid level of the maximum height of membrane module (5) and direct water outlet (4) all is lower than the liquid level that filters out the mouth of a river (3), said membrane module (5) lower end is provided with micro-hole aerator (6).
2. integrative aerobic particle sludge dynamic film bio reaction waste treatment unit according to claim 1; It is characterized in that said micro-hole aerator (6) is connected with air pump (61) through aerating pipelines, is provided with gas meter (62) on the said aerating pipelines.
3. integrative aerobic particle sludge dynamic film bio reaction waste treatment unit according to claim 2 is characterized in that said membrane bioreactor (1) also is provided with riser (7) and thief hole (8).
4. integrative aerobic particle sludge dynamic film bio reaction waste treatment unit according to claim 3, it is characterized in that said membrane bioreactor (1) apart from the top 1/10 highly the place riser is set; Apart from the bottom 3/4 height for reactor place for filtering out the mouth of a river; 1/2 highly is provided with direct water outlet apart from the bottom; 1/10 highly locates to be provided with the bottom thief hole apart from the bottom.
5. integrative aerobic particle sludge dynamic film bio reaction waste treatment unit according to claim 2 is characterized in that said water intake (2) is connected with intake pump (21) through suction culvert.
6. integrative aerobic particle sludge dynamic film bio reaction waste treatment unit according to claim 5; It is characterized in that said device also comprises program timer (9); Be provided with on the said filter pipeline and filter out water management SV (31); Be provided with on the outlet pipeline of said direct water outlet (4) and directly go out water management SV (41), said program timer (9) respectively with filter out water management SV (31), intake pump (21), directly go out water management SV (41) and be connected control with air pump (61) and open and close.
7. integrative aerobic particle sludge dynamic film bio reaction waste treatment unit according to claim 5 is characterized in that said membrane bioreactor (1) is round shape, and the aspect ratio of said membrane bioreactor (1) is 5:1 ~ 15:1.
8. integrative aerobic particle sludge dynamic film bio reaction waste treatment unit according to claim 5; It is characterized in that said membrane module (5) is made up of synthetic glass inside casing and the mould material that covers synthetic glass inside casing surface, it is 50 ~ 200 μ m coarse nets that said mould material adopts the aperture.
9. integrative aerobic particle sludge dynamic film bio reaction waste treatment unit according to claim 5; It is characterized in that said micro-hole aerator (6) is arranged on the bottom of membrane bioreactor (1), said micro-hole aerator (6) distributes in the bottom of membrane bioreactor (1) circlewise.
10. method that the described integrative aerobic particle sludge dynamic film bio of claim 1 reaction waste treatment unit carries out water treatment is characterized in that said method comprising the steps of:
(1) waste water gets in the membrane bioreactor (1) through water intake (2), in membrane bioreactor (1) waste water fully contact with aerobic particle mud and pollutent wherein by biological degradation;
(2) get into the inner discharge of membrane module (5) behind the dynamic membrane filtering of water after handling, hold back in the water after the processing granule sludge in membrane bioreactor (1) through membrane module (5) surface; Perhaps stop directly to discharge membrane bioreactor (1) according to the SBR operation scheme behind the aeration.
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CN109264855A (en) * | 2018-11-14 | 2019-01-25 | 河北工业大学 | Rotating excitation field-membrane bioreactor combines vessel oily water processing method |
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Cited By (4)
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CN104386882A (en) * | 2014-11-26 | 2015-03-04 | 武汉市润之达石化设备有限公司 | Biological ultrafiltration membrane sewage treatment device |
CN104386882B (en) * | 2014-11-26 | 2016-08-24 | 武汉市润之达石化设备有限公司 | A kind of ultrafiltration biofilm sewage treatment device |
CN109264855A (en) * | 2018-11-14 | 2019-01-25 | 河北工业大学 | Rotating excitation field-membrane bioreactor combines vessel oily water processing method |
CN113480009A (en) * | 2021-08-23 | 2021-10-08 | 浙江开创环保科技股份有限公司 | Membrane aeration sewage treatment system |
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