CN101817625B - Water treatment device and method integrating absorption, degradation, air floatation and membrane separation - Google Patents
Water treatment device and method integrating absorption, degradation, air floatation and membrane separation Download PDFInfo
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- CN101817625B CN101817625B CN2010101714195A CN201010171419A CN101817625B CN 101817625 B CN101817625 B CN 101817625B CN 2010101714195 A CN2010101714195 A CN 2010101714195A CN 201010171419 A CN201010171419 A CN 201010171419A CN 101817625 B CN101817625 B CN 101817625B
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Abstract
The invention discloses water treatment device and method integrating absorption, degradation, air floatation and membrane separation, relating to drinking water treatment device and method and aiming at solving the problem of serious membrane pollution caused when an immersed membrane bioreactor is adopted for water treatment in the traditional drinking water treatment. In the water treatment device, an inner chamber is arranged in an outer chamber, an ultrafiltration membrane assembly is arranged in the inner chamber, an annular water tank is positioned above the inner chamber, an air releaser is arranged at the bottom of the outer chamber, and the inner chamber is connected with a clear water tank through a connecting pipe. In the water treatment method, 1, powdered active carbon is put into the outer chamber; 2, source water entering the annular water tank overflows from the annular water tank, wherein high pressure airflow released by the air releaser enables the powdered active carbon to circulate and micro-bubbles circulate to the upper end of the inner chamber to remove algae substances and scum air floatation in the water source; and 3, the powdered active carbon in the inner chamber rises to form three phase streams of gas, solid and liquid, which are subjected to the filtration of the ultrafiltration membrane assembly, and the purified water is generated and enters the clear water tank. The invention is used for the treatment of micro-polluted source water containing high algae.
Description
Technical field
The present invention relates to a kind of appliance for treating drinking water and method.
Background technology
Along with rapid economy development, increasing surface water receives the pollution of municipal effluent, trade effluent etc., and surface water body eutrophication degree increases, and traditional water treatment technology can not satisfy existing water quality standard and request for utilization.
Submerged membrane bio-reactor (Submerged Membrane Bioreactor; SMBR) combined the advantage of traditional activated sludge process and membrane separation technique; Can realize higher sludge retention time and short hydraulic detention time, can reach good solid-liquid separation, guarantee the delivery turbidity of film; Can reach the efficient effect of removing ammonia nitrogen, removing algae, be a kind of water treatment method that successfully manages micro-polluted raw.Because the high density of active sludge, the accumulation of extracellular polymeric on the film surface cause that easily film pollutes in the membrane bioreactor, must frequently wash or matting employed film, cause complicated operation and running cost high.
Summary of the invention
The objective of the invention is to adopt the submerged membrane bio-reactor to carry out water treatment for solving existing drinking water treatment; The film contamination phenomenon is serious; Need film is frequently washed or matting; Cause complicated operation, problem that running cost is high, a kind of water treatment device and method that integrates absorption, degraded, air supporting, membrane sepn is provided.
The inventive system comprises mistress, inner room, hyperfiltration membrane assembly, one-level conducting element, secondary conducting element, three grades of conducting elements, level Four conducting element, air reliever, annular water tank, air compressor machine, two-way suction pump, clear water tanks, lift pump, pipe connecting, shore pipe, three scum silica frost receiving tanks and three choking walls, inner room is arranged on mistress's lumen centers, and hyperfiltration membrane assembly is arranged in the inner room; Annular water tank is packed in mistress's inner chamber, and annular water tank is positioned at the top of inner room upper surface, and the one-level conducting element is taper; The one-level conducting element is arranged on the top of inner room; And the tapered bottom face of one-level conducting element is towards inner room, and secondary conducting element, three grades of conducting elements and level Four conducting element are cone barrel, and secondary conducting element and level Four conducting element are packed on the outer wall of inner room from top to bottom successively; And the awl mouth down of big footpath one end of secondary conducting element and level Four conducting element; Three grades of conducting elements are between secondary conducting element and level Four conducting element, and three grades of conducting elements are packed on mistress's the inwall awl mouth down of path one end of three grades of conducting elements; The air reliever is arranged on mistress's bottom; And the inner room water-in of air reliever and inner room bottom over against, the inlet end of air reliever is connected with air compressor machine through pipeline, the mistress's corresponding with annular water tank sidewall is provided with mistress's water-in; Lift pump is connected with mistress's water-in through pipeline; The input terminus of pipe connecting passes in the inner room and with hyperfiltration membrane assembly and is connected, and the output terminal of pipe connecting is connected with the input terminus of two-way suction pump, and two-way suction delivery side of pump is connected with clear water tanks through pipeline; Shore pipe is connected with the mud discharging mouth of mistress bottom; Three choking walls are uniformly distributed with and are arranged in the annular water tank, and three scum silica frost receiving tanks are uniformly distributed with the below that is arranged on annular water tank, and three scum silica frost receiving tanks are corresponding one by one with three choking walls.
Method of the present invention realizes through following steps: throwing in concentration in step 1, the cavity of elder generation between mistress and inner room is the Powdered Activated Carbon of 0.5g/L～4g/L; The source water of step 2, reservoir is promoted to mistress's water-in through lift pump and gets in the annular water tank; Source water in the annular water tank completely back overflows from the upper end of annular water tank; Simultaneously; Air compressor machine and air reliever constantly discharge the high pressure draft of 0.2MPa～0.6Mpa in inner room; High pressure draft makes Powdered Activated Carbon obtain circulation; High pressure draft to the water body oxygenation and form bubble, fully contacts and discharges micro-bubble with source water when circulation of bubbles to inner room upper end is located with the slit between the one-level conducting element when washing away hyperfiltration membrane assembly surface to produce shearing force, micro-bubble is removed algae substances in the source water and scum silica frost air supporting; Algae substances that air supporting is removed and scum silica frost are collected by the scum silica frost receiving tank; The source water that is removed algae substances and scum silica frost downward sedimentation and fully contact under action of gravity with Powdered Activated Carbon, secondary conducting element, three grades of conducting elements, level Four conducting elements have been controlled the residence time of Powdered Activated Carbon in the mistress, are removed partial organic substances and ammonia nitrogen in the source water of algae substances and scum silica frost by biological degradation; Step 3, high pressure draft drive Powdered Activated Carbon in the inner room and rise and also in the cavity of inner room, form gas, liquid, solid three-phase stream, and this three-phase hyperfiltration membrane assembly of flowing through filters the back and produces water purification and get in the clear water tanks through pipe connecting and two-way suction pump.
The invention has the beneficial effects as follows: one, the castering action of high pressure gas of the present invention has played the effect of air floatation alga removing, can successfully manage high algae water and handle, and suppresses the pollution of algae to film; Enough sludge retention times have guaranteed that Powdered Activated Carbon is to the absorption of pollutent and the degradation function of mikrobe; Can remove small organic molecule, biodegradable organic and part artificial synthetic organic materials that conventional water treatment process can't be removed, reduce sludge discharge simultaneously, reduce secondary pollution; Need not to add any chemistry in water treatment medicament in the whole water treatment procedure; Belong to green water technology, do not produce the by product of any chemical property, simple to operate, running cost is low.Two, the castering action of high pressure gas of the present invention; Not only guaranteed recycling of Powdered Activated Carbon; Simultaneously form gas, liquid, solid three-phase stream, formed strong washing action, can prevent deposition or the embedding of formation and the partial organic substances (like hydrophobic organic compound) of sludge cake on the film surface on the film surface at inner room; Thereby alleviated the film pollution, prolonged film work-ing life.
Description of drawings
Fig. 1 is one-piece construction synoptic diagram of the present invention (mistress 1 is sectional view with inner room 2), and Fig. 2 is the A-A sectional view of Fig. 1, and Fig. 3 is the B-B sectional view of Fig. 1.
Embodiment
Embodiment one: combine Fig. 1 and Fig. 3 that this embodiment is described, this embodiment comprises mistress 1, inner room 2, hyperfiltration membrane assembly 3, one-level conducting element 4, secondary conducting element 5, three grades of conducting elements 6, level Four conducting element 7, air reliever 8, annular water tank 9, air compressor machine 10, two-way suction pump 12, clear water tanks 13, lift pump 14, pipe connecting 15, shore pipe 16, three scum silica frost receiving tanks 17 and three choking walls 18, and inner room 2 is arranged on mistress 1 lumen centers; Hyperfiltration membrane assembly 3 is arranged in the inner room 2; Annular water tank 9 is packed in mistress 1 inner chamber, and annular water tank 9 is positioned at the top of inner room 2 upper surfaces, and one-level conducting element 4 is taper; One-level conducting element 4 is arranged on the top of inner room 2; And the tapered bottom face of one-level conducting element 4 is towards inner room 2, and one-level conducting element 4 covers the top import of inner room 2, and secondary conducting element 5, three grades of conducting elements 6 and level Four conducting element 7 are cone barrel; Secondary conducting element 5 is packed on the outer wall of inner room 2 from top to bottom with level Four conducting element 7 successively; And the awl mouth down of big footpath one end of secondary conducting element 5 and level Four conducting element 7, three grades of conducting elements 6 are between secondary conducting element 5 and level Four conducting element 7, and three grades of conducting elements 6 are packed on mistress 1 the inwall; The awl mouth down of path one end of three grades of conducting elements 6; Air reliever 8 is arranged on mistress 1 bottom, and the inner room water-in 2-1 of air reliever 8 and inner room 2 bottoms over against, the inlet end of air reliever 8 is connected with air compressor machine 10 through pipeline; The mistress's 1 corresponding with annular water tank 9 sidewall is provided with mistress's water-in 1-2; Lift pump 14 is connected with mistress's water-in 1-2 through pipeline, and the input terminus of pipe connecting 15 passes in the inner room 2 and with hyperfiltration membrane assembly 3 and is connected, and the output terminal of pipe connecting 15 is connected with the input terminus of two-way suction pump 12; The output terminal of two-way suction pump 12 is connected with clear water tanks 13 through pipeline; Shore pipe 16 is connected with the mud discharging mouth 1-1 of mistress 1 bottom, and three choking walls 18 are uniformly distributed with and are arranged in the annular water tank 9, and three scum silica frost receiving tanks 17 are uniformly distributed with the below that is arranged on annular water tank 9; And three scum silica frost receiving tanks 17 are corresponding one by one with three choking walls 18, collect in case water inlet influences scum silica frost.Inlet flume 9 is an annular, can guarantee the homogeneity of intaking.Inner room 2 is connected through the support plate that whenever is provided with at a distance from 120 degree with mistress 1.One-level conducting element 4 plays two effects: (1), at one-level conducting element 4 place, slit with inner room 2 upper ends, and micro-bubble combines the foam of formation density less than water with algae substances in the source water that annular water tank 9 overflows; (2), guiding is flowed to mistress 1 at inner room 2 round-robin Powdered Activated Carbons; After current get into mistress 1; The foam that density is little forms scum silica frost and discharges mistress 1 through scum silica frost receiving tank 17 on the top layer; Density is big to be active sludge downward sedimentation under action of gravity of carrier with the Powdered Activated Carbon, is sink to the bottom through secondary conducting element 5, three grades of conducting elements 6, level Four conducting elements 7 successively, forms once circulation.Secondary conducting element 5, three grades of conducting elements 6, level Four conducting elements 7 realized Powdered Activated Carbon in mistress 1 uniform distribution and prolonged residence time of Powdered Activated Carbon, guaranteed the adsorption function and the microbiological deterioration of Powdered Activated Carbon.Two-way suction pump 12 is two to pump, and forward operates to water outlet, inverted running for to be drawn water by clear water tanks, and hyperfiltration membrane assembly 3 is carried out the hydraulic reverse flushing.Shore pipe 16 can stop aeration when spoil disposal, carry out spoil disposal.Hyperfiltration membrane assembly 3 is the commercially available prod.
Embodiment two: combine Fig. 1 that this embodiment is described, this embodiment and embodiment one are different is that it also increases pressure transmitter 11 is arranged, and pressure transmitter 11 is arranged on the pipe connecting 15.Pressure transmitter 11 is used for monitoring the transmembrane pressure of the ultra-filtration membrane in the hyperfiltration membrane assembly 3, the pollution condition of reflection film.Other composition and annexation are identical with embodiment one.
Embodiment three: combine Fig. 1 that this embodiment is described, this embodiment is realized through following steps: throwing in concentration in step 1, the cavity of elder generation between mistress 1 and inner room 2 is the Powdered Activated Carbon of 0.5g/L～4g/L; The source water of step 2, reservoir is promoted to mistress's water-in 1-2 through lift pump 14 and gets in the annular water tank 9; Source water in the annular water tank 9 completely back overflows from the upper end of annular water tank 9; Simultaneously; Air compressor machine 10 and the air reliever 8 continuous high pressure drafts that in inner room 2, discharge 0.2MPa～0.6Mpa; High pressure draft makes Powdered Activated Carbon obtain circulation, and high pressure draft to the water body oxygenation and form bubble, fully contacts and discharge micro-bubble with source water when circulation of bubbles to inner room 2 upper ends are located with the slit between the one-level conducting element 4 when washing away hyperfiltration membrane assembly 3 surface to produce shearing forces; Micro-bubble is removed algae substances in the source water and scum silica frost air supporting; Algae substances that air supporting is removed and scum silica frost are collected by scum silica frost receiving tank 17, and algae substances that air supporting is removed and scum silica frost flow to mistress 1 outside along receiving tank 17, the source water that is removed algae substances and scum silica frost downward sedimentation and fully contact with Powdered Activated Carbon under action of gravity; Secondary conducting element 5, three grades of conducting elements 6, level Four conducting elements 7 have been controlled the residence time of Powdered Activated Carbon in mistress 1, are removed partial organic substances and ammonia nitrogen in the source water of algae substances and scum silica frost by biological degradation; Step 3, high pressure draft drive Powdered Activated Carbon in the inner room 2 and rise and also in the cavity of inner room 2, form gas, liquid, solid three-phase stream, and this three-phase hyperfiltration membrane assembly 3 of flowing through filters the back and produces water purification and get in the clear water tanks 13 through pipe connecting 15 and two-way suction pump 12.Each item index of source water is: pH is 7.0～7.8, temperature is that 15～22 ℃, turbidity are 4NTU～10NTU, permanganate index (COD
Mn) be 4mg/L～6mg/L, organism overall target (UV
254) be 0.080～0.105, algae is 3,000 ten thousand/L.Powdered Activated Carbon in the step 1 can add continuously also and can disposablely add, and Powdered Activated Carbon plays the effect of adsorb organic compound or microbe carrier; Powdered Activated Carbon can be used as microbe carrier stop for a long time in mistress 1 in the step 3, and for microbial growth provides enough room and times, Powdered Activated Carbon also can reach the effect to the flushing of pollutent water in inner room 2 uphill process.The effect that the high pressure draft effect that produces through air reliever 8 gets into inner room 2 and in upwelling, washes; Be gas, liquid, solid three-phase stream form in the inner room 2; Form polyphasic flow on the film surface, prevented adhering to of cake layer to form and reduced of deposition or the embedding of absorption type organic on the film surface.
The experimental result that adopts present method to draw is: the water purification turbidity＜0.2NTU of processing, permanganate index (COD
Mn)＜3mg/L, algae do not detect (lowest detection be limited to 2.5 ten thousand/L), organism overall target (UV
254) clearance is 30～70%, above-mentioned water purifying index can satisfy the GB5749-2006 sanitary standard for drinking water.
Embodiment four: combine Fig. 1 that this embodiment is described, the ultra-filtration membrane described in the step 3 of this embodiment in the hyperfiltration membrane assembly 3 is the organic hollow tunica fibrosa, and operating flux is 20L/m
2H～30L/m
2H, operating pressure are 0.15MPa～0.06MPa, and back washing strength is 40L/m
2H～100L/m
2H, backwashing period are 30～120 minutes, backwashing time 30 seconds～90 seconds.Other step is identical with embodiment three.
Claims (4)
1. water treatment device that integrates absorption, degraded, air supporting, membrane sepn; Said device comprises mistress (1) and lift pump (14); It is characterized in that: said device also comprises inner room (2), hyperfiltration membrane assembly (3), one-level conducting element (4), secondary conducting element (5), three grades of conducting elements (6), level Four conducting element (7), air reliever (8), annular water tank (9), air compressor machine (10), two-way suction pump (12), clear water tanks (13), pipe connecting (15), shore pipe (16), three scum silica frost receiving tanks (17) and three choking walls (18); Inner room (2) is arranged on the lumen centers of mistress (1), and hyperfiltration membrane assembly (3) is arranged in the inner room (2), and annular water tank (9) is packed in the inner chamber of mistress (1); And annular water tank (9) is positioned at the top of inner room (2) upper surface; One-level conducting element (4) is taper, and one-level conducting element (4) is arranged on the top of inner room (2), and the tapered bottom face of one-level conducting element (4) is towards inner room (2); Secondary conducting element (5), three grades of conducting elements (6) and level Four conducting element (7) are cone barrel; Secondary conducting element (5) and level Four conducting element (7) from top to bottom are packed on the outer wall of inner room (2) successively, and the awl mouth down of big footpath one end of secondary conducting element (5) and level Four conducting element (7), and three grades of conducting elements (6) are positioned between secondary conducting element (5) and the level Four conducting element (7); And three grades of conducting elements (6) are packed on the inwall of mistress (1); The awl mouth down of path one end of three grades of conducting elements (6), air reliever (8) is arranged on the bottom of mistress (1), and the inner room water-in (2-1) of air reliever (8) and inner room (2) bottom over against; The inlet end of air reliever (8) is connected with air compressor machine (10) through pipeline; The mistress's (1) corresponding with annular water tank (9) sidewall is provided with mistress's water inlet (1-2), and lift pump (14) is connected with mistress's water-in (1-2) through pipeline, and the input terminus of pipe connecting (15) passes in the inner room (2) and with hyperfiltration membrane assembly (3) and is connected; The output terminal of pipe connecting (15) is connected with the input terminus of two-way suction pump (12); The output terminal of two-way suction pump (12) is connected with clear water tanks (13) through pipeline, and shore pipe (16) is connected with the mud discharging mouth (1-1) of mistress (1) bottom, and three choking walls (18) are uniformly distributed with and are arranged in the annular water tank (9); Three scum silica frost receiving tanks (17) are uniformly distributed with the below that is arranged on annular water tank (9), and three scum silica frost receiving tanks (17) are corresponding one by one with three choking walls (18).
2. according to the said water treatment device that integrates absorption, degraded, air supporting, membrane sepn of claim 1, it is characterized in that: said device also comprises pressure transmitter (11), and pressure transmitter (11) is arranged on the pipe connecting (15).
3. water treatment method that utilizes the said device of claim 1 to realize integrating absorption, degraded, air supporting, membrane sepn, it is characterized in that: said method realizes through following steps: step 1, input concentration is the Powdered Activated Carbon of 0.5g/L～4g/L in the cavity between mistress (1) and inner room (2) earlier; The source water of step 2, reservoir is promoted to mistress's water-in (1-2) through lift pump (14) and gets in the annular water tank (9); Source water in the annular water tank (9) completely back overflows from the upper end of annular water tank (9); Simultaneously; Air compressor machine (10) and air reliever (8) constantly discharge the high pressure draft of 0.2MPa～0.6Mpa in inner room (2); High pressure draft makes Powdered Activated Carbon obtain circulation; High pressure draft to the water body oxygenation and form bubble, fully contacts and discharges micro-bubble with source water when circulation of bubbles to inner room (2) upper end is located with the slit between the one-level conducting element (4) when washing away hyperfiltration membrane assembly (3) surface to produce shearing force, micro-bubble is removed algae substances in the source water and scum silica frost air supporting; Algae substances that air supporting is removed and scum silica frost are collected by scum silica frost receiving tank (17); The source water that is removed algae substances and scum silica frost downward sedimentation and fully contact under action of gravity with Powdered Activated Carbon, secondary conducting element (5), three grades of conducting elements (6), level Four conducting element (7) have been controlled the residence time of Powdered Activated Carbon in mistress (1), are removed partial organic substances and ammonia nitrogen in the source water of algae substances and scum silica frost by biological degradation; Step 3, high pressure draft drive Powdered Activated Carbon in the inner room (2) and rise and also in the cavity of inner room (2), form gas, liquid, solid three-phase stream, and this three-phase hyperfiltration membrane assembly (3) of flowing through filters the back and produces water purification in pipe connecting (15) and two-way suction pump (12) entering clear water tanks (13).
4. according to the said water treatment method that integrates absorption, degraded, air supporting, membrane sepn of claim 3, it is characterized in that: the ultra-filtration membrane in the hyperfiltration membrane assembly described in the step 3 (3) is the organic hollow tunica fibrosa, and operating flux is 20L/m
2H～30L/m
2H, operating pressure are 0.15MPa～0.06MPa, and back washing strength is 40L/m
2H～100L/m
2H, backwashing period are 30～120 minutes, backwashing time 30 seconds～90 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101714195A CN101817625B (en) | 2010-05-13 | 2010-05-13 | Water treatment device and method integrating absorption, degradation, air floatation and membrane separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101714195A CN101817625B (en) | 2010-05-13 | 2010-05-13 | Water treatment device and method integrating absorption, degradation, air floatation and membrane separation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101817625A CN101817625A (en) | 2010-09-01 |
| CN101817625B true CN101817625B (en) | 2012-05-09 |
Family
ID=42652929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101714195A Expired - Fee Related CN101817625B (en) | 2010-05-13 | 2010-05-13 | Water treatment device and method integrating absorption, degradation, air floatation and membrane separation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101817625B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351370B (en) * | 2011-07-01 | 2013-05-29 | 中国科学院生态环境研究中心 | Integrated reactor and method for removing ammonia nitrogen and organic matter from drinking water |
| CN103435147A (en) * | 2013-07-23 | 2013-12-11 | 天津工业大学 | Self-cleaning submerged tubular membrane bioreactor |
| CN104874218B (en) * | 2015-06-10 | 2016-09-07 | 厦门唯科健康科技有限公司 | A kind of domestic filtered water purification structure |
| CN107324482B (en) * | 2017-07-11 | 2020-11-24 | 西安建筑科技大学 | Efficient automatic slag discharging device and method in ozone air floatation process |
| WO2024172756A1 (en) * | 2023-02-16 | 2024-08-22 | Esco Aster Pte. Ltd. | Air-lift bioreactor |
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2010
- 2010-05-13 CN CN2010101714195A patent/CN101817625B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101817625A (en) | 2010-09-01 |
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Granted publication date: 20120509 |