CN106006847A - Dynamic membrane sewage direct filtering reactor based on different sewage qualities and operation method - Google Patents
Dynamic membrane sewage direct filtering reactor based on different sewage qualities and operation method Download PDFInfo
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- CN106006847A CN106006847A CN201610551464.0A CN201610551464A CN106006847A CN 106006847 A CN106006847 A CN 106006847A CN 201610551464 A CN201610551464 A CN 201610551464A CN 106006847 A CN106006847 A CN 106006847A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a dynamic membrane sewage direct filtering reactor based on different sewage qualities and an operation method. According to the dynamic membrane sewage direct filtering reactor, a dynamic membrane is formed on the surface of a macropore membrane support material by virtue of inherent suspended solids in sewage, the dynamic membrane can be adopted for direct filtration and concentration on sewage, produced water can meet the standard of city sewage recycling landscape irrigation water, and a concentrated liquid can be discharged into a municipal pipe network or is further treated and recycled; on the basis of different contents of suspended solids in sewage, the operation method comprises the following steps: (1) under a high-turbidity raw water condition, powering on a stirring device in a sewage regulating pond, pumping the sewage into a dynamic membrane filtering reactor by using a lifting pump till the turbidity is less than 10 NTU to form a dynamic membrane, feeding back primary effluent to the sewage regulating pond, and carrying out normal operation to generate water; (2) under a low-turbidity raw water condition, powering off the stirring device in the sewage regulating pond, pumping settled sewage into the dynamic membrane filtering reactor by using the lifting pump so as to form the dynamic membrane in a manner the same as that of the process (1), after the dynamic membrane is formed, powering on the stirring device in the sewage regulating pond, and subsequently carrying out normal operation to generate water.
Description
Technical field
The invention belongs to water-treatment technology field, particularly to a kind of Dynamic Membrane based on different sewage water quality
The direct filtration reactor of sewage and operation method.
Background technology
Recently, water environment pollution and shortage of water resources badly influence daily life and national economy
Development.Regeneration effluent process and reuse are the Important Actions of extensive concern, and application of membrane separation technology day
Benefit increases.
Application of membrane separation technology when sewage second-level processes with advanced treating, also exist long flow path, investment high,
The problem that energy consumption is high, operation and maintenance cost is high.And membrane separation technique (microfiltration or ultrafiltration) is applied to former
Directly filtering of sewage, domestic and international researcher has been carried out certain exploration, and result shows effluent quality
Disclosure satisfy that the requirement of recycled water green area irrigation, and serious membrane pollution problem, physics frequently can be caused
Chemical cleaning, reduce film service life, chemical agent cost increases and secondary pollution, ultimately results in operation
That safeguards is significantly increased, and limits the popularization and application of technique.
Dynamic Membrane (Dynamic membrane) technology is that the water of great application prospect processes new technique, is
Refer to utilize precoating paint or activated sludge to form new film, the separation of strengthening feed liquid on macroporous membrane backing material surface
Effect.Precoated dynamic membrane and self-forming dynamic membrane two kinds can be divided into according to the difference of class coating material.Dynamic Membrane
Technology has membrane material low cost, that flux is high, membrane fouling rate is low and easy to control, gravity goes out water consumption is low
Deng number of advantages.
Chinese patent 200610044415 enhanced coagulation and dynamic film integrated waste water treating process, specifically walk
Rapid as follows: (1) sewage initially enters the coagulating district of reactor side, and throws in this region simultaneously
The chemical treatment medicament added carries out complete puddling mix；(2) reactor opposite side is defecator, should
Defecator is that millimetre-sized base material covers by aperture, and the sewage after coagulating treatment passes through base material, at base material
Surface gradually forms Dynamic Membrane layer, and this film layer is gel layer and cake layer from inside to outside, has and is similar to
The crown_interception of tradition micro-filtration membrane, can reach the effect of good solid-liquid separation；(3) water is processed by mistake
The outlet pipe leading to reactor top in filter device is discharged.It is straight that this patent is that Dynamic membrane is applied to sewage
Take over the representative art of filter, be disadvantageous in that: (1) dosing coagulant adds processing cost, special
It not that coagulant charging quantity dramatically increases for low turbidity waste sewage；(2) use of coagulant, particularly
Organic polymer, is easily caused irreversible fouling membrane, affects the operation maintenance of technique；(3) residual in generation
The coagulant stayed may cause potential reuse risk.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, it is an object of the invention to provide a kind of based on different dirty
The direct filtration reactor of Dynamic Membrane sewage of water water quality and operation method, different based on turbidity in sewage, adopt
Taking different technical measures, the fast and stable utilizing intrinsic float in sewage to realize Dynamic Membrane is formed, and reaches
Original position separating effect to sewage；There is low cost, low energy consumption, easy to control, treatment effect simple to operate
Excellent advantage.
To achieve these goals, the technical solution used in the present invention is:
A kind of Dynamic Membrane direct filtration reactor of sewage based on different sewage water quality, including bottom with precipitation
The sewage regulating reservoir 3 in district, sewage regulating reservoir 3 arranges at least two outlet, and one of them is positioned at cell body
On, another is positioned at settling zone, and two outlets are all reacted with dynamic membrane filtering by sewage pump 6
Device 10 connects, and described dynamic membrane filtering reactor 10 includes reactor cell body, arranges in reactor cell body
Boring aeration device 9 and dynamic membrane filtering assembly 11, under the conditions of high turbidity water quality, in cell body, sewage is squeezed into dynamic
State film filtering reactor 10；Under condition of low turbidity, settling zone sewage squeezes into dynamic membrane filtering reactor 10,
Regulation aeration rate, the fast and stable utilizing intrinsic float in sewage to realize Dynamic Membrane is formed.
Described sewage regulating reservoir 3 is configured with agitating device 2, and described agitating device 2 is waterborne or stirs under water
Mix device.
The cell body of described sewage regulating reservoir 3 is cylinder or square, cell body upper water-out mouth and sewage pump 6
Connecting line on high-order water inlet electrodynamic valve 4 is set, the connection of settling zone outlet and sewage pump 6
Low position inflow water electrodynamic valve 5 is set on pipeline.
Described sewage pump 6 is centrifugal pump, described high-order water inlet electrodynamic valve 4 and low position inflow water electrodynamic valve
5 connect self-con-tained unit realizes fast opening and closing.
Described boring aeration device 9 is arranged in the bottom of reactor cell body both sides, and boring aeration device 9 connects exposure
Air pump or aerator 7 and to be provided with gas flowmeter 8 on connecting line adjustable to realize flow, described
Dynamic membrane filtering assembly 11 is arranged on the centre of reactor cell body.
Described dynamic membrane filtering assembly 11 is double-faced flat-sheet formula structure, PVC board framework and macroporous membrane prop up
Timbering material combines fixing forming successively.
Described macroporous membrane backing material be aperture be the stainless (steel) wire of 10-200 μm, nylon wire or non-woven fabrics.
Described boring aeration device 9 is perforated tube aerator, and length is consistent with reactor cell body, and eyelet is straight
Footpath 3-5mm, eyelet spacing 1-3cm, direction side-lower 45 °.
Present invention also offers the operation of the direct filtration reactor of Dynamic Membrane sewage of described different sewage water quality
Mode, it is characterised in that:
A, high concentrtion former water condition under:
1.1 open the agitating device 2 in sewage regulating reservoir 3, and dynamic membrane filtering squeezed into by the boosted pump of sewage 6
Reactor 10, starts dynamic membrane filtering reactor 10 under low aeration condition, make at gravity head or pumping
Start to produce water under with, produce water and be back to sewage regulating reservoir 3.
1.2 with product water turbidity as index, when turbidity is less than 10NTU, it is believed that Dynamic Membrane is formed, and regulation
Boring aeration device 9 to high-strength aeration, continuum micromeehanics, water outlet；
1.3, when flux is less than the 10% of initial flux, carry out hydraulic reverse flushing or gas back-flushing, instead
Backwash rate flexible, uses Chemical cleaning (pickling, alkali cleaning or oxygen when flux recovery rate is less than 80%
Agent is cleaned)；
After 1.4 have cleaned, repeat 1.1-1.2；
B, low turbidity former water condition under:
2.1 close the agitating device 2 in sewage regulating reservoir 3, and Dynamic Membrane squeezed into by the precipitation boosted pump of sewage 6
Filtration reactor 10, starts dynamic membrane filtering reactor 10, in gravity head or pumping under low aeration condition
Start to produce water under suction effect, produce water and be back to regulating reservoir 3；
2.2 with product water turbidity as index, when turbidity is less than 10NTU, it is believed that Dynamic Membrane is formed, and regulation
Boring aeration device 9 to high-strength aeration, opens sewage regulating reservoir agitating device 2, continuum micromeehanics, water outlet；
2.3, when flux is less than the 10% of initial flux, carry out hydraulic reverse flushing or gas back-flushing, instead
Backwash rate flexible, uses Chemical cleaning (pickling, alkali cleaning or oxygen when flux recovery rate is less than 80%
Agent is cleaned)；
After 2.4 have cleaned, repeat 2.1-2.2.
Wherein:
The former water condition of described high concentrtion refers to turbidity > 300NTU；The former water condition of low turbidity refers to turbidity
＜ 300NTU；
Described low aeration condition is aeration rate 1-2m3/m2h；
Described gravity head is 5cm-50cm；
Described high-strength aeration is 4-6m3/m2h。
In the present invention, < 10NTU is the water quality of irrigation water in urban sewage reutilization miscellaneous water to turbidity
Requirement, when being used in other purposes, needs to do the corresponding adjustment running operating condition.
One of key of Dynamic Membrane sewage direct filtration reactor operation method in the present invention: dynamic at sewage
In film direct filtration technology, use different operational approach based on the difference of turbidity in sewage, utilize former water
In intrinsic float as class coating material, act on macropore by water level pressure reduction or abstract water pump and support
Material shows to be formed stable Dynamic Membrane, and the initial stage produces because turbidity is high, can return sewage regulating reservoir.With
Time can reach higher flux (20-80L/m2H), delivery turbidity is little more than 6h the periodic duty time
In 10NTU, stably reach the water quality requirement of irrigation water in urban sewage reutilization miscellaneous water.
In the present invention the two of the key of Dynamic Membrane sewage direct filtration reactor operation method: technique uses
Double-faced flat-sheet formula membrane module, PVC board framework and macroporous membrane backing material combine fixing forming successively,
Dismounting and change is convenient, and PVC board framework can be reused, and has only to if desired change backing material.
In the present invention the three of the key of Dynamic Membrane sewage direct filtration reactor operation method: the film of technique is dirty
Dye control method, uses continuous print aeration to wash away the excessive growth of suppression pollution layer；When flux is less than initial
Flux 10% time, the aeration backwash of inverse direction of effluent and hydraulic reverse can be used to rinse, recover film and lead to
Amount；Chemical cleaning can be used if desired effectively to remove irreversible membrane pollution problem.
In the present invention the four of the key of Dynamic Membrane sewage direct filtration reactor operation method: run control complete
Portion can realize automatization, it is possible to achieve the operation steady in a long-term of technique.
Compared with prior art, the invention has the beneficial effects as follows:
(1), in the direct filtration reactor of Dynamic Membrane sewage, the formation of Dynamic Membrane uses in sewage intrinsic completely
Float, the method, without dosing coagulant and other particle, saves processing cost, and economy can
OK.
(2) dynamic film component is double-faced flat-sheet formula, by PVC board frame, macroporous membrane backing material group successively
Close fixing forming, convenient dismounting and replacing membrane material.
(3) method that gas backwash, water backwashing cleaning and Chemical cleaning combine is used flexibly, effectively
Control fouling membrane.
(4) Dynamic Membrane sewage Direct Filtration Technology, run simple to operate, outlet effect good, cost and energy
Consume low, continuous and automatic can be realized simultaneously and run.
The present invention utilizes float intrinsic in sewage, forms Dynamic Membrane on macroporous membrane backing material surface,
Carry out the direct filtering and concentrating of sewage, produce water and can meet urban sewage recycling view irrigation water standard,
Concentrated solution enters city planting ductwork or further treatment for reuse.
Accompanying drawing explanation
Fig. 1 is the structural representation of the direct filtration reactor of Dynamic Membrane sewage of the present invention.
Detailed description of the invention
Below against accompanying drawing and specific embodiment, the present invention is further described.It should be pointed out that, this
A little embodiments are for illustrating that the present invention is not limited to limit the scope of application of the present invention.Reality in embodiment
The condition of executing further can be adjusted according to practical situation (water quality, equipment and operation operating condition).
Embodiment 1
As it is shown in figure 1, high-turbidity sewage (turbidity is 300-400NTU) is squeezed into dirt by water inlet pipe 1
Water regulating reservoir 3, starts agitating device 2, starts electrodynamic valve 4 (electrodynamic valve 5 cuts out), and sewage is boosted
Dynamic membrane filtering reactor 10 squeezed into by pump 6, and now aerator 7 is opened, adjusting gas flow meter 8 to
Low aeration rate (1-2m3/m2H), sewage is through dynamic film component 11, under water level differential pressure action (10-10.5cm)
Flowing to outlet pipe 12, the initial stage produces water and returns sewage regulating reservoir 3 because of turbidity height, so circulates 40-50min
After, turbidity is less than 10NTU, and flux is in (20-80L/m2h).After Dynamic Membrane is formed, regulate gas
Effusion meter 8 to high-strength aeration (4-6m3/m2H), continuous erosion membrane module surface, reactor stable operation
Time is more than 6h.Then use gas backwash or water backwashing to clean, recover flux, continuous service.
Embodiment 2
As it is shown in figure 1, low turbidity waste sewage (turbidity is 70NTU) is squeezed into sewage regulation by water inlet pipe 1
Pond 3, closes agitating device 2, starts electrodynamic valve 5 (electrodynamic valve 4 cuts out), and (turbidity reaches precipitation sewage
To about 350-450NTU) boosted pump 6 squeezes into dynamic membrane filtering reactor 10, now aerator
7 open, adjusting gas flow meter 8 to low aeration rate (1-2m3/m2H), sewage through dynamic film component 11,
Under water level differential pressure action, (10-10.5cm) flow to outlet pipe 12, and it is dirty because turbidity height returns that the initial stage produces water
After water regulating reservoir 3, so circulation 30-40min, turbidity is less than 10NTU, and flux is in (20-80L/m2h)。
After Dynamic Membrane is formed, start agitating device 2, it is ensured that the sewage mix homogeneously in sewage regulating reservoir 3, with
Time adjusting gas flow meter 8 to high-strength aeration (4-6m3/m2H), continuous erosion membrane module surface, reaction
Device parallel-adder settle-out time is more than 6h.Then use gas backwash or water backwashing to clean, recover flux, hold
Reforwarding row.
Claims (10)
1. the Dynamic Membrane direct filtration reactor of sewage based on different sewage water quality, it is characterised in that
Including bottom with the sewage regulating reservoir (3) of settling zone, sewage regulating reservoir (3) arranges at least two and goes out
The mouth of a river, one of them is positioned on cell body, and another is positioned at settling zone, and two outlets are all carried by sewage
Rising pump (6) to be connected with dynamic membrane filtering reactor (10), described dynamic membrane filtering reactor (10) is wrapped
Include reactor cell body, reactor cell body arrange boring aeration device (9) and dynamic membrane filtering assembly (11),
Under the conditions of high turbidity water quality, in cell body, sewage squeezes into dynamic membrane filtering reactor (10)；Condition of low turbidity
Under, settling zone sewage squeezes into dynamic membrane filtering reactor (10), regulates aeration rate, utilizes in sewage solid
The fast and stable having float to realize Dynamic Membrane is formed.
The most according to claim 1, Dynamic Membrane sewage based on different sewage water quality directly filters reaction
Device, it is characterised in that described sewage regulating reservoir (3) is configured with agitating device (2), described stirring dress
Putting (2) is waterborne or underwater stirrer.
The most according to claim 1, Dynamic Membrane sewage based on different sewage water quality directly filters reaction
Device, it is characterised in that the cell body of described sewage regulating reservoir (3) is cylinder or square, cell body upper water-out mouth
With high-order water inlet electrodynamic valve (4), settling zone outlet are set on the connecting line of sewage pump (6)
With low position inflow water electrodynamic valve (5) is set on the connecting line of sewage pump (6).
The most according to claim 3, Dynamic Membrane sewage based on different sewage water quality directly filters reaction
Device, it is characterised in that described sewage pump (6) is centrifugal pump, described high-order water inlet electrodynamic valve (4)
Connect self-con-tained unit with low position inflow water electrodynamic valve (5) and realize fast opening and closing.
The most according to claim 1, Dynamic Membrane sewage based on different sewage water quality directly filters reaction
Device, it is characterised in that described boring aeration device (9) is arranged in the bottom of reactor cell body both sides, perforation
Aerator (9) connects aeration pump or aerator (7) and is provided with gas flowmeter (8) on connecting line
Adjustable to realize flow, described dynamic membrane filtering assembly (11) is arranged on the centre of reactor cell body.
The most according to claim 1, Dynamic Membrane sewage based on different sewage water quality directly filters reaction
Device, it is characterised in that described dynamic membrane filtering assembly (11) is double-faced flat-sheet formula structure, by PVC board
Framework and macroporous membrane backing material combine fixing forming successively.
The most according to claim 6, Dynamic Membrane sewage based on different sewage water quality directly filters reaction
Device, it is characterised in that described macroporous membrane backing material be aperture be the stainless (steel) wire of 10-200 μm, Buddhist nun
Dragon net or non-woven fabrics.
The most according to claim 1, Dynamic Membrane sewage based on different sewage water quality directly filters reaction
Device, it is characterised in that described boring aeration device (9) is perforated tube aerator, length and reactor cell
Body is consistent, eye diameter 3-5mm, eyelet spacing 1-3cm, direction side-lower 45 °.
9. the operation side of the direct filtration reactor of Dynamic Membrane sewage of different sewage water quality described in claim 1
Formula, it is characterised in that:
A, high concentrtion former water condition under:
1.1) opening the agitating device (2) in sewage regulating reservoir (3), the boosted pump of sewage (6) is beaten
Enter dynamic membrane filtering reactor (10), under low aeration condition, start dynamic membrane filtering reactor (10),
Under gravity head or pumping effect, start to produce water, produce water and be back to sewage regulating reservoir (3).
1.2) to produce water turbidity as index, when turbidity is less than 10NTU, it is believed that Dynamic Membrane is formed, adjust
Joint boring aeration device (9) is to high-strength aeration, continuum micromeehanics, water outlet；
1.3) when flux is less than the 10% of initial flux, hydraulic reverse flushing or gas back-flushing are carried out, instead
Backwash rate flexible, uses Chemical cleaning when flux recovery rate is less than 80%；
1.4), after having cleaned, 1.1 are repeated)-1.2)；
B, low turbidity former water condition under:
2.1) agitating device (2) in sewage regulating reservoir (3) is closed, the precipitation boosted pump of sewage (6)
Squeeze into dynamic membrane filtering reactor (10), under low aeration condition, start dynamic membrane filtering reactor (10),
Under gravity head or pumping effect, start to produce water, produce water and be back to regulating reservoir (3)；
2.2) to produce water turbidity as index, when turbidity is less than 10NTU, it is believed that Dynamic Membrane is formed, adjust
Joint boring aeration device (9) to high-strength aeration, opens sewage regulating reservoir agitating device (2), continuum micromeehanics,
Water outlet；
2.3) when flux is less than the 10% of initial flux, hydraulic reverse flushing or gas back-flushing are carried out, instead
Backwash rate flexible, uses Chemical cleaning when flux recovery rate is less than 80%；
2.4), after having cleaned, 2.1 are repeated)-2.2).
The most according to claim 9, Dynamic Membrane sewage based on different sewage water quality directly filters reaction
The method of operation of device, it is characterised in that:
The former water condition of described high concentrtion refers to turbidity > 300NTU；The former water condition of low turbidity refers to turbidity
＜ 300NTU；
Described low aeration condition is aeration rate 1-2m3/m2h；
Described gravity head is 5cm-50cm；
Described high-strength aeration is 4-6m3/m2h。
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|---|---|---|---|
| CN201610551464.0A CN106006847B (en) | 2016-07-13 | 2016-07-13 | A kind of direct filtration reactor of Dynamic Membrane sewage and operation method based on different sewage water quality |
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| CN106587420A (en) * | 2016-11-22 | 2017-04-26 | 深圳市康源环境纳米科技有限公司 | System and method for removing heavy metals from wastewater |
| CN106830304A (en) * | 2017-03-01 | 2017-06-13 | 天津碧水源膜材料有限公司 | Batch-type bioreactor of dynamic membrane and its operation method |
| CN107174974A (en) * | 2017-06-08 | 2017-09-19 | 天津碧水源膜材料有限公司 | Dynamic membrane filtering device and its operation method |
| CN112876025A (en) * | 2021-03-04 | 2021-06-01 | 暨南大学 | Mud water purifying device |
| CN113149347A (en) * | 2021-04-01 | 2021-07-23 | 武汉天源环保股份有限公司 | Kitchen waste water treatment method and treatment device thereof |
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| CN113149347A (en) * | 2021-04-01 | 2021-07-23 | 武汉天源环保股份有限公司 | Kitchen waste water treatment method and treatment device thereof |
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| Publication number | Publication date |
|---|---|
| CN106006847B (en) | 2018-12-04 |
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