CN100496679C - Continuous micro-filtering pool for water treatment and use therefor - Google Patents
Continuous micro-filtering pool for water treatment and use therefor Download PDFInfo
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- CN100496679C CN100496679C CNB2006100153708A CN200610015370A CN100496679C CN 100496679 C CN100496679 C CN 100496679C CN B2006100153708 A CNB2006100153708 A CN B2006100153708A CN 200610015370 A CN200610015370 A CN 200610015370A CN 100496679 C CN100496679 C CN 100496679C
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Abstract
The present invention relates to an urban sewage regeneration utilization water treatment process and a water treatment process for running water. Said invention is characterized by that it is a continuous microfiltration filter tank water treatment process, said process can utilize MF membrane technique, and makes said MF membrane technique be combined with a fast filter tank. Said invention can raise water quality, and can reduce treatment cost.
Description
Technical field
The present invention relates to urban sewage reutilization water treatment technology and tap water treatment process.
Background technology
Existing urban sewage reutilization water treatment technology is generally, and is the water source with sewage treatment plant's second pond water outlet, with traditional tap water treatment process promptly flocculate, precipitate, filter (quartz sand filtration), sterilization process is handled.State-of-the-art urban sewage reutilization water treatment technology is a membrane technology, is the water source with sewage treatment plant's second pond water outlet, utilizes the micro-filtration membrane CMF device of aperture≤0.2m to carry out filtration treatment.Sewage treatment plant's second pond water outlet total number of bacteria is 10
4～10
6Individual/mL, coliform is 10
5～10
7Individual/L, SS≤30mg/L, through the water outlet that the traditional flocculation of tap water treatment process, precipitation, filtration (quartz sand filtration) are handled, turbidity, SS all can reach the recycled water standard, but total number of bacteria is 10
2～10
3Individual/mL, coliform is 10～10
3Individual/L, need chlorination 20～30mg/L, 60min sterilization time of contact, bacterium and coliform just can reach the city miscellaneous water standard of recycled water; When this recycled water supplied resident's miscellaneous water, the people's thoughts obstacle was very big, was difficult to accept; When if recycled water need carry out desalting processing, traditional tap water treatment process is handled the SDI index of water outlet, far can not satisfy the pretreated requirement of RO desalination; Utilize the micro-filtration membrane CMF device of aperture≤0.2 μ m to carry out the recycled water of filtration treatment, water quality is good, and people are willing to accept, and are the best preliminary treatment of RO desalination, but cost exceeds more than three times of traditional tap water treatment process; The periodic maintenance of the frequent flushing of existing micro-filtration membrane CMF device film, Chemical cleaning, film and replacing all can increase the complexity and the cost of water treatment of operation.Utilizing the abbreviation of micro-filtration membrane CMF-S (Jin No formula CMF of aperture≤0.2 μ m) device carries out the recycled water of filtration treatment, and the water treatment effect is identical with CMF, and cost is 2/3rds of CMF; Inconvenience is installed, safeguards, overhauled to the modular construction complexity; It is fit to greater than 30000m
3The engineering of water treatment of the above scale of/d.
Summary of the invention
The objective of the invention is to overcome the hygiene water quality defective of handling recycled water with traditional tap water treatment process; Overcome the complexity of CMF and CMF-S film device and CMF and deficiency that CMF-the S technology investment is high.The present invention is a kind of continuous Microfiltration filter tank water treatment new technology that combines with rapid filter with the MF membrane technology, investment with CMF technology 1/2, CMF-S technology 2/3, obtain and CMF and the identical recycled water water quality of CMF-S technology, its operation, safeguard all simpler than CMF and CMF-S film device and traditional tap water treatment process.
Can take following technical scheme to realize the present invention:
The continuous Microfiltration filter tank that is used for water treatment is made up of plug-in type membrane module 3, filter tank 1, the formula of catchmenting filter plate 5, air water back washing system, inlet and outlet system, chemical cleaning system and preceding chlorination system; Membrane module 3 places in the filter tank, by formula filter plate 5 supports of catchmenting; The formula of catchmenting filter plate 5 is made up of the catchment socket and glass epoxy or armoured concrete slab that can be connected with the membrane module socket joint, in establish collection pipe 4 in the filter plate, the formula of catchmenting filter plate is with stainless steel platen and be bolted on the filter wall 6, filters the wall reinforced concrete structure; The filter plate in steel filter tank is fixed on the stainless steel brackets; Top, filter tank is provided with rhone 2, backwash drainpipe 11, Chemical cleaning feed tube 12, overflow pipe 15; The bottom, filter tank is provided with water inlet pipe 7, outlet pipe 8, backwash water inlet pipe 9, backwash air inlet pipe 10; On water inlet pipe 7, establish chlorination pipe 13, chemical cleaning solution recovery tube 14 before the filter; Described plug-in type membrane module is that the formula membrane module is inserted in single slotting formula membrane module or the combination of Y shape, and the assembly lower end is provided with the plug that is connected with filter plate, and membrane module directly inserts interior the getting final product of the socket that catchments of the formula filter plate that catchments.
The micro-filtration membrane of described plug-in type membrane module is a sludge proof PVDF external-compression type hollow-fibre membrane silk, and it holds back aperture≤0.2 μ m; Single formula membrane module of inserting, double water outlet end, dead end or cross-flow filtration, the assembly lower end is provided with the plug that is connected with filter plate, the long handle mixing tube and the ponding chamber, filter back of air water back washing; The combination of Y shape is inserted the formula membrane module and is combined into a triangle star by three film spares, double water outlet end, and dead-end filtration is provided with the center collector pipe, and there is the plug that is connected with filter plate the collector pipe lower end; Membrane module directly inserts interior the getting final product of the socket that catchments of the formula filter plate that catchments.
The continuous Microfiltration filter tank is following a or b or three kinds of working methods of c:
A. gravity type micro-filtration filter tank is the open type filter tank, relies on gravity work, and the outfall sewer in filter tank is located at the collecting-tank underwater, and collecting-tank lowest water level and filter tank working water level keep the 10m drop;
B. gravity open type micro-filtration filter tank, filter tank water outlet be directly with the water pump suction, and do not set out the water collecting-tank;
C. pressure type micro-filtration filter tank is closed bearing device, relies on the water pump pressurized operation.
It is 0.085MPa that described a or b design maximum transmembrane pressure; C design maximum working pressure (MWP) is 0.25MPa.
The chlorine that water treatment continuous Microfiltration filter tank water inlet adds 2.0mg/L kills whole bacteriums of being held back by micro-filtration membrane effectively, and prevents that microorganism such as bacterium from breeding multiply in filter tank and film system, guarantees not to be subjected to biological pollution inside and outside the membranous wall.
If former water is peace and quiet river or reservoir water, can not add flocculation precipitation pretreatment, prechlorination is entered the micro-filtration filter tank after clean coarse filter automatically, and cleaning the coarse filter effect automatically is to remove the thicker suspension of particle.
Stable for keeping the stable of continuous Microfiltration filter tank membrane module membrane flux and crossing the mould difference, 60～120min air water back washing once, the 2～4min that at every turn recoils removes the thing that is trapped on film surface.Be to remove the chemistry and the biological pollution on film surface, alkali cleaning in per 7～10 days once, pickling in per 60 days once.Chemical cleaning solution all can be recycled.
The continuous Microfiltration filter tank is provided with the underwater camera monitor, is convenient to install, safeguards and maintenance, can take out membrane module easily and locate the insertion membrane module exactly.When membrane module damages, inflate online detection, utilize the underwater camera monitor to determine to be decreased membrane module.But submersible has been avoided the existing CMF and the complicated dismounting of CMF-S Maintenance and Repair.Provide condition and convenient for increasing membrane module density.
Water treatment continuous Microfiltration filter tank is applied to following three kinds of regeneration effluent handling processes or tap water New Process for Treatment:
1) is the water source with municipal sewage plant's second pond water outlet or is the water source that chlorination oxidizing, flocculating precipitation is removed most of turbidity, ss suspended solid, bacterium, removes remaining turbidity, SS, bacterium and virus through the continuous Microfiltration filter tank with running water water source water;
2) be the water source with municipal sewage plant's second pond water outlet or be the water source that prechlorination is removed the thicker suspension of particle, removed whole turbidity, SS and bacterial virus through the continuous Microfiltration filter tank through flushing coarse filter automatically with running water water source water;
3) be the water source with municipal sewage plant's second pond water outlet or be the water source with running water water source water, chlorination oxidizing, flocculating precipitation, remaining turbidity, SS and bacterial virus, pollution index SDI≤3 are removed in the continuous Microfiltration filter tank, connect the reverse osmosis (RO) desalination then.The effluent quality of above continuous Microfiltration filter tank new technology: the total number of bacteria clearance can reach 99.99～99.9999%, the clearance of coliform reaches 100%, SDI≤3, SS≤0.5mg/L, turbidity≤0.5NTU, coliform are zero, total number of bacteria≤30/mL (near zero).
The relative prior art of present technique has following advantage and effect
Compare with traditional running water technology: the recycled water water quality that present technique is handled is good, coliform is zero, total number of bacteria≤30/mL, SDI≤3, chlorine dosage≤10mg/L, construction investment is about 140% of traditional running water technology, and the program of operation is simpler than traditional running water technology; The recycled water water quality of tradition running water PROCESS FOR TREATMENT is relatively poor, and coliform is 10 before the chlorination
2～10
3Individual/L, total number of bacteria is 10
2Individual/more than the mL, the sterilization chlorine dosage needs 20～30mg/L, more than time of contact about 60min, and coliform≤3/L, total number of bacteria≤100/mL, SDI〉3.
Compare with CMF and CMF-S (immersion CMF) technology: the recycled water water quality that present technique is handled is good identical with CMF and CMF-S technology; Present technique water treatment principle, operation sequence and CMF-S technology is basic identical; Present technique is MF and the combining of rapid filter technology, membrane module structure and assembly simple optimizing, and air-water backwashing gas distribution effect is better than CMF and CMF-S equipment, the backwash efficiency height, the recoil cycle is CMF and CMFs two times.The integrality sonar instrument of CMF monitoring film, CMF-S does not still have effective film integrality online test method, and impaired membrane module is repaired and changed, and needs to shut down the dismounting that discharges water; Present technique adopts the underwater camera instrument to carry out the online detection of film integrality, than sonar instrument intuitive and convenient.Replacing is damaged membrane module does not need the shutdown of cutting off the water, and extracts impaired membrane module, inserts intact membrane module again and gets final product, and maintaining equipments is convenient, and membrane module is two times of import CMF-S by dress density, and floor space is little.The present technique capital construction investment is all lower than CMF technology and CMF-S, is 100% with traditional running water technology investment, and the present technique investment is 140%, and CMF-S technology is 200%, and the CMF technology was 300～400% (homemade CMF is about 200%).
Present technique is used for the engineered and construction of city tap-water, can increase water quality, and reduces operating cost.In the health burst accident unusual time, can guarantee water supply quality especially.
Description of drawings
Fig. 1 is a continuous Microfiltration filter tank structure chart
Fig. 2 is single formula membrane module structure figure of inserting
Fig. 3 is that formula membrane module structure figure is inserted in the combination of Y shape
Fig. 4 is reused water processing technological process (1)
Fig. 5 is reused water processing technological process (2)
Fig. 6 is reused water processing technological process (3)
Fig. 7 is running water New Process for Treatment figure
Wherein: 1, filter tank; 2, rhone; 3, plug-in type membrane module; 4, collection pipe in the filter plate; 5, the formula filter plate that catchments; 6, filter wall; 7, water inlet pipe; 8, filter back outlet pipe; 9, backwash water inlet pipe; 10, backwash air inlet pipe; 11, backwash drainpipe; 12, Chemical cleaning feed tube; 13, chlorination pipe before the filter; 14 chemical cleaning solution recovery tubes; 15, overflow pipe.16, catchment formula membrane module socket 17, auto lock device of filter plate; 18, single membrane module of inserting; 19, blast pipe; 20, go up collecting chamber; 21, central tube; 22, package shell; 23, steam vent; 24, MF film silk; 25, inlet opening; 26, assembly locking slot; 27, close ring; 28, lower water chamber; 29, membrane module plug; 30, long handle mixing battery.31, combined films assembly; 32, recoil air hose; 33, center collector pipe; 34, junctional membrane packaging receptacle; 35, magnetic connects leg; 36, filter plate; 37, horizontal collection pipe.
The specific embodiment
In conjunction with embodiment technical scheme is described in detail.
Embodiment 1
A kind of continuous Microfiltration filter tank is made up of micro-filtration membrane filtrate (single formula membrane module or slotting formula membrane module of Y shape combination inserted), armored concrete filter tank (or metal filter tank), the formula of catchmenting filter plate, air water back washing system, pickling system, caustic washing system, preceding chlorination system.Micro-filtration membrane (MF) is a sludge proof PVDF external-compression type hollow-fibre membrane silk, and it holds back aperture 0.2 μ m; Gravity type micro-filtration filter tank, homemade film membrane flux 30～35L/m
2H; Unit's effective area drainage amount in filter tank is 16～20m
3/ m
2H.Film imported membrane flux 50L/m
2H, unit's effective area drainage amount in filter tank can reach 30m
3/ m
2H.Pressure type micro-filtration filter tank, homemade film membrane flux 40L/m
2H; Unit's effective area drainage amount in filter tank is 22～27m
3/ m
2H; Film imported membrane flux 70L/m
2H, unit's effective area drainage amount in filter tank can reach 42m
3/ m
2H; The filter tank is reinforced concrete structure or steel filter tank; Filter plate is made up of armored concrete (or fiberglass) plate and the ABS socket that catchments, and filter plate is with stainless steel platen and be bolted on the filter wall filter wall reinforced concrete structure, high 1000mm, wide 150mm; The filter plate of steel filter tank is fixed on the stainless steel brackets; Air water backwash system is made up of recoil water pump and air blast; Chemical cleaning system is made up of acid storage and sour measuring pump, lye tank (vat) and alkali pump; Before chlorination system by the chlorine bottle and automatically chlorinating machine form (or hypochlorite generator and measuring pump form).
Embodiment 2
A kind of continuous Microfiltration filter tank, micro-filtration membrane filtrate (single formula membrane module or slotting formula membrane module of Y shape combination inserted) is filled in the armored concrete filter tank, and the filter plate support membrane module.Filter plate is of a size of 1000 * 1000 (mm), and the slit between the filter plate seals with fluid sealant.Filter plate is supported by the filter wall, and filter wall two ends link to each other with the filter tank pool wall, and filter the foot of a wall portion links to each other with at the bottom of the pond.Per pass filter wall top is provided with the air cushion balance pipe of several d=25mm, and the bottom is provided with the hydraulic equilibrium hole of 2～3 700 * 700 (mm).Top, filter tank is provided with backwash drainpipe, Chemical cleaning water inlet pipe; The bottom, filter tank is provided with water inlet pipe, outlet pipe, backwash water inlet air inlet pipe.On water inlet manifold, establish the filter before the chlorination pipe.
It is 0.2 μ m that the aperture is held back in a kind of continuous Microfiltration filter tank, MF micro-filtration membrane, and all greater than being removed of 0.2 μ m granule foreign 100% in the water inlet, the diameter of bacterium is all greater than 0.2 μ m, so the continuous Microfiltration filter tank has fabulous bacteria-eliminating efficacy.
Embodiment 4
A kind of continuous Microfiltration filter tank, the MF micro-filtration membrane is the PVDF oxide-resistant film, adds 2.0mg/L chlorine in water inlet.Though the time of staying of water in filtering layer is very short, bacterium is trapped within on the MF micro-filtration membrane forever, the free chlorine Long contact time in bacterium and the water and being killed.Chlorination system by liquid chlorine chlorine bottle and automatically chlorinating machine form, small-sized water factory also can be made up of clorox or chlorine dioxide generation gas and measuring pump.
Embodiment 5
The regular air-water backwashing in continuous Microfiltration filter tank, backwash cycle 60～120min, air-water backwashing can rinse out killed bacterial and the impurity that is trapped within the film surface.When continuous Microfiltration filter tank water yield and effluent quality are lower than designing requirement, adopt 0.5～1.0% NaOH alkali lye to carry out alkali cleaning, flush away is adsorbed on the organic and biological pollution on film surface, carries out pickling with 1.0% acid solution again, the inorganic chemistry pollution on flush away film surface.About 7～10 days of alkali wash period, pickling cycle 30 days.
Embodiment 6
As Fig. 4,5,6,7, water treatment continuous Microfiltration filter tank is applied to following three kinds of regeneration effluent handling processes and tap water New Process for Treatment: (1) is the water source with municipal sewage plant's second pond water outlet or is the water source with running water water source water, chlorination oxidizing, flocculating precipitation, remove most of turbidity, SS, bacterium, remove remaining turbidity, SS, bacterium and virus through the continuous Microfiltration filter tank.(2) be the water source with municipal sewage plant's second pond water outlet or be the water source that prechlorination is removed the thicker suspension of particle, removed whole turbidity, SS and bacterial virus through the continuous Microfiltration filter tank through flushing coarse filter automatically with running water water source water.(3) be the water source with municipal sewage plant's second pond water outlet or be the water source with running water water source water, chlorination oxidizing, flocculating precipitation, remaining turbidity, SS and bacterial virus, SDI≤3 are removed in the continuous Microfiltration filter tank, connect the RO desalination then.The effluent quality of above continuous Microfiltration filter tank new technology: the total number of bacteria clearance can reach 99.99～99.9999%, the clearance of coliform reaches 100%, SDI≤3, SS≤0.5mg/L, turbidity≤0.5NTU, coliform are zero, total number of bacteria≤30/mL (near zero).
Claims (8)
1. a continuous Microfiltration filter tank that is used for water treatment is characterized in that: be made up of plug-in type membrane module (3), filter tank (1), the formula of catchmenting filter plate (5), air water back washing system, inlet and outlet system, chemical cleaning system and preceding chlorination system; Membrane module (3) places in the filter tank, by formula filter plate (5) support of catchmenting; The formula of catchmenting filter plate (5) is made up of the catchment socket and glass epoxy or armoured concrete slab that can be connected with the membrane module socket joint, in establish collection pipe (4) in the filter plate, the formula of catchmenting filter plate is with stainless steel platen and be bolted on the filter wall (6), filters the wall reinforced concrete structure; The filter plate in steel filter tank is fixed on the stainless steel brackets; Top, filter tank is provided with rhone (2), backwash drainpipe (11), Chemical cleaning feed tube (12), overflow pipe (15); The bottom, filter tank is provided with water inlet pipe (7), outlet pipe (8), backwash water inlet pipe (9), backwash air inlet pipe (10); On water inlet pipe (7), establish chlorination pipe (13), chemical cleaning solution recovery tube (14) before the filter; Described plug-in type membrane module is single formula membrane module or slotting formula membrane module of Y shape combination inserted, and the assembly lower end is provided with the plug that is connected with filter plate, and membrane module directly inserts in the socket that catchments of the formula filter plate that catchments.
2. the continuous Microfiltration filter tank that is used for water treatment according to claim 1 is characterized in that: the micro-filtration membrane of described plug-in type membrane module is a sludge proof PVDF external-compression type hollow-fibre membrane silk, and it holds back aperture≤0.2 μ m; Single formula membrane module of inserting, double water outlet end, dead end or cross-flow filtration, the assembly lower end is provided with the plug that is connected with filter plate, the long handle mixing tube and the ponding chamber, filter back of air water back washing; The combination of Y shape is inserted the formula membrane module and is combined into a triangle star by three membrane modules, double water outlet end, and dead-end filtration is provided with the center collector pipe, and there is the plug that is connected with filter plate the collector pipe lower end; Membrane module directly inserts in the socket that catchments of the formula filter plate that catchments.
3. the continuous Microfiltration filter tank that is used for water treatment according to claim 1 and 2 is characterized in that: the continuous Microfiltration filter tank is following a or b or c,
A. gravity type micro-filtration filter tank is the open type filter tank, relies on gravity work, and the outfall sewer in filter tank is located at the collecting-tank underwater, and collecting-tank lowest water level and filter tank working water level keep the 10m drop;
B. gravity open type micro-filtration filter tank, filter tank water outlet be directly with the water pump suction, and do not set out the water collecting-tank;
C. pressure type micro-filtration filter tank is closed bearing device, relies on the water pump pressurized operation.
4. the continuous Microfiltration filter tank that is used for water treatment according to claim 1 and 2 is characterized in that: the water inlet of water treatment continuous Microfiltration filter tank adds the chlorine of 2.0mg/L.
5. the continuous Microfiltration filter tank that is used for water treatment according to claim 4 is characterized in that: it is 0.085MPa that described a or b design maximum transmembrane pressure; C design maximum working pressure (MWP) is 0.25MPa.
6. the continuous Microfiltration filter tank that is used for water treatment according to claim 1 and 2 is characterized in that: per 60～120min air water back washing once, 2～4min recoils at every turn; Alkali cleaning in per 7～10 days once, pickling in per 60 days once.
7. the continuous Microfiltration filter tank that is used for water treatment according to claim 1 and 2, it is characterized in that: the continuous Microfiltration filter tank is provided with the underwater camera monitor, when membrane module damages, inflates online detection, utilizes the underwater camera monitor to determine to be decreased assembly.
8. the application that is used for the continuous Microfiltration filter tank of water treatment according to claim 1 and 2 is characterized in that: water treatment continuous Microfiltration filter tank is applied to following three kinds of regeneration effluent handling processes or tap water New Process for Treatment:
1) is the water source with municipal sewage plant's second pond water outlet or is the water source that chlorination oxidizing, flocculating precipitation is removed most of turbidity, ss suspended solid, bacterium, removes remaining turbidity, SS, bacterium and virus through the continuous Microfiltration filter tank with running water water source water;
2) be the water source with municipal sewage plant's second pond water outlet or be the water source that prechlorination is removed the thicker suspension of particle, removed whole turbidity, SS and bacterial virus through the continuous Microfiltration filter tank through flushing coarse filter automatically with running water water source water;
3) be the water source with municipal sewage plant's second pond water outlet or be the water source with running water water source water, chlorination oxidizing, flocculating precipitation, remaining turbidity, SS and bacterial virus, pollution index SDI≤3 are removed in the continuous Microfiltration filter tank, connect the reverse osmosis (RO) desalination then.
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|---|---|---|---|
| CNB2006100153708A CN100496679C (en) | 2006-08-21 | 2006-08-21 | Continuous micro-filtering pool for water treatment and use therefor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100153708A CN100496679C (en) | 2006-08-21 | 2006-08-21 | Continuous micro-filtering pool for water treatment and use therefor |
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|---|---|
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| CN100496679C true CN100496679C (en) | 2009-06-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101941747B (en) * | 2010-08-13 | 2012-04-11 | 天津森诺过滤技术有限公司 | Technological method for treating and recycling degreaser sewage based on immersed continuous membrane filtration technology |
| CN102151485A (en) * | 2011-04-19 | 2011-08-17 | 中国市政工程华北设计研究总院 | Submerged ultrafiltration membrane tank |
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Non-Patent Citations (2)
| Title |
|---|
| 海水淡化中连续膜过滤技术的工艺优化研究. 李璟，吕晓龙，马世虎.膜科学与技术，第26卷第3期. 2006 |
| 海水淡化中连续膜过滤技术的工艺优化研究. 李璟，吕晓龙，马世虎.膜科学与技术，第26卷第3期. 2006 * |
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Application publication date: 20071114 Assignee: Motian Film Science and Technology Co., Ltd., Tianjin Assignor: Jiao Zhaoming Contract record no.: 2010120000019 Denomination of invention: Continuous micro-filtering filtering pool for water treatment and use therefor Granted publication date: 20090610 License type: Common License Record date: 20100318 |
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