CN1413916A - Air-floated biological treatment process and equipment - Google Patents
Air-floated biological treatment process and equipment Download PDFInfo
- Publication number
- CN1413916A CN1413916A CN02125202A CN02125202A CN1413916A CN 1413916 A CN1413916 A CN 1413916A CN 02125202 A CN02125202 A CN 02125202A CN 02125202 A CN02125202 A CN 02125202A CN 1413916 A CN1413916 A CN 1413916A
- Authority
- CN
- China
- Prior art keywords
- air
- equipment
- biological
- biological treatment
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011282 treatment Methods 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 70
- 230000008569 process Effects 0.000 title claims abstract description 53
- 239000010865 sewage Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 102
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 69
- 238000005188 flotation Methods 0.000 claims description 44
- 230000003647 oxidation Effects 0.000 claims description 34
- 238000007254 oxidation reaction Methods 0.000 claims description 34
- 239000000377 silicon dioxide Substances 0.000 claims description 34
- 244000005700 microbiome Species 0.000 claims description 32
- 239000000945 filler Substances 0.000 claims description 30
- 238000005516 engineering process Methods 0.000 claims description 29
- 238000012545 processing Methods 0.000 claims description 28
- 230000000694 effects Effects 0.000 claims description 26
- 238000009300 dissolved air flotation Methods 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 230000003197 catalytic effect Effects 0.000 claims description 9
- 238000005189 flocculation Methods 0.000 claims description 8
- 230000016615 flocculation Effects 0.000 claims description 8
- 239000002957 persistent organic pollutant Substances 0.000 claims description 8
- 238000005868 electrolysis reaction Methods 0.000 claims description 6
- 238000006213 oxygenation reaction Methods 0.000 claims description 6
- 238000005119 centrifugation Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000090 biomarker Substances 0.000 claims description 2
- 239000003814 drug Substances 0.000 claims description 2
- 238000010894 electron beam technology Methods 0.000 claims description 2
- 239000008239 natural water Substances 0.000 claims description 2
- 150000003016 phosphoric acids Chemical class 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 230000004071 biological effect Effects 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 239000002893 slag Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 11
- 238000007667 floating Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 17
- 238000005273 aeration Methods 0.000 description 14
- 239000010802 sludge Substances 0.000 description 11
- 238000011010 flushing procedure Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 208000028659 discharge Diseases 0.000 description 8
- 239000000725 suspension Substances 0.000 description 7
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 238000010992 reflux Methods 0.000 description 6
- 238000005842 biochemical reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 4
- 230000001954 sterilising effect Effects 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 239000002352 surface water Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003798 microbiological reaction Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Physical Water Treatments (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
An air-floating biologic process and equipment for treating organic sewage features the air-floating separation and biologic treatment are combined. Its advantages are simple equipment, high efficiency and occupation of less ground area.
Description
The present invention is a kind of technology that multiple organically-polluted water is handled, and is that a kind of main processes with dissolved air flotation and biological treatment organically is combined in the container and the extra-high-speed that forms is imitated treatment process.The present invention treatable organically-polluted water be microorganism to be played various organically-polluted waters the inhibiting organically-polluted water of strong toxicity except that minority contains, comprise industrial organic waste water, municipal effluent, resident living sewage, the natural surface water that is subjected to Organic pollutants, underground water etc.
One,
For the water that contains certain organic pollutant, existing treatment process has basic skills such as physical partition method and physico-chemical processes, biological treatment.Wherein, physical partition method mainly contains technologies such as precipitation, air supporting, ultrasonic, microwave, filtration treatment, and physico-chemical processes mainly contains technologies such as coagulating sedimentation, electrofloatation, chemical dosing, photochemical catalytic oxidation.For a long time, people have done a large amount of research and improvement to various physical chemistry separating technologies, for example increase swash plate or inclined tube in settling tank, have increased substantially the efficient and the effluent quality of precipitate and separate.Dissolved air flotation technology is widely used in the processing of trade effluents such as oily water separation, mthod of white water from paper making.In general, there is following problem in physicochemical treatment method: the effluent quality of conventional processes such as precipitation, air supporting, filtration, coagulating sedimentation is not high, generally be not easy to reach the requirement of sewage discharge, then working cost is higher for technologies such as chemical dosing, photochemical catalytic oxidation, is restricted so use.
Fig. 1 is a kind of typical air flotation pool structural representation.After the water that need handle generally adds flocculation agent in advance, enter main equipment air flotation pool (102) by water inlet pipe (101).Top in main equipment air flotation pool (102) is equipped with and is scraped scum silica frost device (103), and micro bubble generation device (105) is equipped with in the bottom.Micro bubble generation device (105) can be made up of pressure air-dissolving jar, air compressor machine, water pump and dissolved air water reliever, also can form by the vane type air-floating apparatus or by electrolyzer and direct supply etc.Also will be by the scum silica frost that scum silica frost relief outlet (104) is discharged through further handling.Treat effluent is flowed out by rising pipe (106).The residence time of processed water in equipment was generally 0.2～0.5 hour.
Air-float filtration equipment is a kind of a kind of equipment that air-float technology and filtration process are combined, it will condense, device is floating, medium filter, backwash is combined in the container of an outward appearance as settler continuously, so also there is person to be the air-dissolving air-float gravitation filter.Fig. 2 is a kind of structural representation of air-float filtration equipment.After the water that need handle generally adds flocculation agent in advance, enter the air flotation zone on top, air-float filtration pond (202) by water inlet pipe (201).The same with general air-float technology, air flotation zone is provided with scrapes scum silica frost device (203) and micro bubble generation device (205), scum silica frost relief outlet (206).The filtrating area of bottom, air-float filtration pond (202) is equipped with filtration medium (204), is generally sand and hard coal.Flushing inlet pipe (207) and flushing water inlet pipe (208) are equipped with in the filtrating area bottom, and the water after the filtration flows out through rising pipe (209).Generally, filtrating area is a lattice, and back flushing is single-frame carried out successively, uses at most with the back-purge system of mobile bell-type.Recently, the application of air-float filtration equipment has developed into and has replaced settling tank to be used for the secondary sedimentation technology that aeration and biological is handled, and has improved the sewage treatment capacity of unit surface equipment greatly, has reduced the project occupation of land area.The residence time of processed water in air-float filtration equipment was generally 0.5～1 hour.
Biological treatment mainly contains aerobic treatment and anaerobic treatment method, wherein aerobic treatment has technologies such as activated sludge process, biomembrance process, is subdivided into traditional activated sludge process, A/O denitrogenation dephosphorizing sewage treatment process, biological contact oxidation process, oxidation ditch process, blodisc, sequence bioreactor, three-phase fluidized-bed bioreactor, membrane bioreactor, biological filter, BAF etc.A lot of technologies in biological treatment include treatment process physics or physicochemical.Just comprise precipitate and separate technology in for example traditional activated sludge process biological treatment, membrane separation process is arranged in the membrane bioreactor, filtering separation technology is arranged in the BAF.In general, the integrated operation cost of biological treatment is lower, so application is very extensive, but the lower problem of ubiquity processing efficiency makes that treatment facility facility volume is bigger, and floor space is big, and the engineering construction cycle is long.
The progress of biological treatment is also a lot, microorganism concn in improving bio-reactor, shorten the treatment time, improve and tangible progress is also arranged aspect processing efficiency and the effluent quality, that progressively applies in recent years has technology such as three-phase fluidized-bed bioreactor, membrane bioreactor.Adopt general municipal effluent of this different technical finesse or sanitary sewage, the residence time of sewage in equipment is can reach emission request in 2-4 hour.The water outlet of membrane bioreactor even can reach the water quality standard of consumable water of sight and amusement, but cost and film replacement charge are higher.
Typical municipal effluent activated sludge process biological treatment is seen Fig. 6.
Fig. 6 is typical municipal effluent activated sludge process biological treatment schema.
Wherein, have only the aeration tank mainly to play biological respinse, mixed solution concentration of suspension (MLSS) wherein is generally 0.3%, and the residence time of processed water in the aeration tank is 6～20 hours usually.
BAF is a kind of newer processing Organic pollutants water purification treatment process, and particularly application is comparatively successful aspect the processing micro-polluted water.Fig. 3 is a kind of structural representation of typical BAF.The water that needs to handle enters BAF (302) by water inlet pipe (301).The top of BAF (302) is the aeration aerating district, is provided with aeration inlet pipe (305), and this effect with the aeration tank that general aerobe is handled is identical.Water after the processing enters the filtering layer of granular biological filler (304) formation of bottom, and Organic pollutants water obtains further bio-contact oxidation and handles and filtration, purification.The same with general filtering basin, also be provided with flushing water inlet pipe (308), flushing inlet pipe (307), flush discharge pipe (306), wash-water gutter (303) in the BAF (302).In BAF, the residence time of sewage is generally less than 1 hour, the processing efficiency height.Because the BAF bottom is a filter bed, to the finite capacity of holding back of pollutent, so in general, BAF is fit to handle suspension content below 50mg/l, the sewage of COD content below 100mg/l.So BAF is mainly used in the processing of micro-polluted drinking water at present, and the deep purifying of the middle water after the processing of process two stage biological is handled.
Two,
Patent of invention " Pressolution electrolytic pressolution biochemical multifunctional air-float complete sets of equipment " (application number 99115260.3) discloses multiple water treatment functions such as a kind of current collection chemistry redox, electric materialization flocculation, pressure solution biochemistry, solid-liquid separation in the device of one, adopt materialization to add biochemical linear bonded ultimate principle, organic sewage in this device earlier by the electrochemistry physico-chemical pretreatment after, and then by efficient pressure solution biochemical treatment, handled by the electrochemistry materialization more at last, clear water, dense scum silica frost is discharged respectively continuously.This device is adapted to various basic, normal, high concentration industrial sewages and one step of urban comprehensive wastewater is handled qualified discharge, is adapted to the extra heavy concentration organic sewage and handles up to standard through this one step of device again after anaerobic biological is handled.According to the introduction of the specification sheets of this invention, its processing technological flow is: sewage collecting basin → pump → one-level air supporting (electrolysis) → pump → pressure air-dissolving biochemical reaction jar → secondary air-floatation separation → water outlet.Because this technical process is longer, particularly biochemical reaction will be finished in pressure air-dissolving tank, and the residence time is 40-120 minute, so need very big volumetrical pressurized vessel, so facility investment is higher, is fit to handle some high density, unmanageable waste water.
(application number: 94205181.5) (1996.05.22 announces because of cessation of patent right due to non-payment of the annual fee) discloses a kind of air supporting and inflated aerobic filter tank utility model patent " aerobic filter tank is inflated in air supporting ", have two casings, one of them has dissolved air release and water-in, water shoot connects second bottom half, also have the gas-filled valve that carries out air backwash and oxygenation in second casing, also have gravel blanket and anthracite coal measure in addition, secondary treatment water is removed the suspension floc particle through after the air supporting, and through good gas oxygenation, filter, further remove the dissolved matter in anhydrating after the backwash.
Air-float technology is also in constantly development is improved.Drift along solid-liquid separating method and device (application number 92104174.8, cessation of patent right due to non-payment of the annual fee) of lateral flow inclined plate separates lateral flow inclined plate and introduces in the dissolved air flotation technology.
Three,
The present invention has disclosed a kind of treatment process method of new organically-polluted water, it is characterized in that dissolved air flotation and two technological processs of biological treatment organically are combined in the container, that is to say, with traditional suitable technological transformation and adjustment of air flotation pool process, make same vessel space not only play the effect of floating, and can play simultaneously the effect of biological treatment, promptly air flotation pool also is a biological treatment tank simultaneously.
Typical municipal effluent air-floated biological treatment process is seen Fig. 7.
Fig. 7 is a municipal effluent air-floated biological treatment process schema.
Air supporting biological treating equipment of the present invention can replace original preliminary sedimentation tank, aeration tank, second pond, and the air supporting biological treating equipment of some kind does not also need the mud refluxing unit.
Air supporting biological treatment can also be used for that the lighter surface water of organic contamination degree, underground water are carried out a step to be handled, and removes suspended substance and organic pollutant simultaneously, makes the water after the processing reach the relevant water quality standard of tap water.
The technology that aeration and biological is handled needs aeration aerating, the water after will handling separates two aspects with the microorganism flco.The present invention has made full use of air flotation pool and has had the characteristics of oxygenation, centrifugation simultaneously, has improved the utilising efficiency of equipment greatly, and processing efficiency is high.
Yet, can not find tangible biological treatment effect in the common air flotation pool.This is because the condition of microorganism raised growth breeding is not provided in air flotation pool.
In order to obtain good biological treatment effect, must improve the total amount of the microorganism in the air flotation pool, promptly improve concentration or the extended volume of microorganism.The present invention proposes at air flotation zone and set up bio-contact oxidation filler, the increase scum silica frost residence time, scum silica frost backflow, increase terms of settlement such as biological filter.These ways can be as required, and wherein one, two of choose reasonable or multinomially be optimized combination make the air flotation pool of various types change the air supporting biological treating equipment into.If collocation is appropriate, device structure is reasonable in design, just can improve processing efficiency, improves effluent quality, lowers running cost, thereby obtains the good technical economic performance.
Fig. 4 is a kind of air-floated biological treatment process schematic diagram of pattern.The air-floated biological treatment process principle is as follows: the organically-polluted water that needs to handle is entered in the air supporting biological treatment tank (402) by water inlet pipe (401), under the microbubble effect that micro bubble generation device (405) produces, obtain oxygenation, microorganism in the water utilizes the oxygen and the organic substance that are dissolved in the water to carry out metabolism, carries out degradation treatment by the organism in the aerobic biochemical reaction pair sewage.In order to improve the processing efficiency of microorganism, at the air supporting inflatable region bio-contact oxidation filler (404) can be set, under certain situation, also can not establish the bio-contact oxidation filler.The bio-contact oxidation filler can adopt various forms of materials, is retained in air flotation zone by rights.At air flotation zone, microbubble also takes the suspended substance in the sewage and biological floe to the top of air supporting biological treatment tank (402) simultaneously, forms scum layer.In order to increase the microorganism total amount of air flotation zone, scum layer should control to thicker thickness.Scum silica frost scrapes scum silica frost relief outlet (407) by scraping scum silica frost device (403), in device external scum silica frost is handled, or according to circumstances with all or part of sewage collecting basin (409) that is back to of scum silica frost, send into water inlet pipe (401) or directly enter air supporting biological treatment tank (402) by sump pump (410), can realize the reflux cycle of active sludge body refuse.Flow to the bottom through the water after air supporting biological treatment tank (402) the air supporting biological treatment, discharge by treat effluent pipe (408).In order to increase the effect of sewage disposal, can in position add aerating apparatus (406).
The air supporting biological treating equipment can adopt various engineering materialss to do the structures of multiple planeforms such as squarely, circle, annular, Polygons, diversified shape such as that its facade shape also can be done is tapered, avette, trapezoidal, stepped appearance.Obviously, the change of shape at some position or separation can bring the raising or the reduction of processing efficiency, influence the economy of equipment simultaneously.
Generally, sanitary sewage adopts aforesaid device to handle, and the residence time in equipment is promptly can reach sewage drainage standard in 0.5～1 hour.
Fig. 5 is another array configuration---the schematic diagram of air supporting biological filter of air supporting biological treatment.Air supporting biological filtering tank process principle is as follows: the sewage that needs to handle is entered in the air supporting biological filter (502) by water inlet pipe (501), under the microbubble effect that micro bubble generation device (505) produces, obtain oxygenation, microorganism in the water utilizes the oxygen and the organic substance that are dissolved in the water to carry out metabolism, carries out degradation treatment by the organism in the aerobic biochemical reaction pair sewage.In order to improve the processing efficiency of microorganism, bio-contact oxidation filler (504) can be set at the air supporting inflatable region.Also can not establish filler in some cases.The bio-contact oxidation filler can adopt various forms of materials, is retained in air flotation zone by rights.At air flotation zone, microbubble also takes suspended substance in the sewage and biological floe to air supporting biological filter (502) top simultaneously, form scum layer, scrape scum silica frost relief outlet (506) by scraping scum silica frost device (503), in device external scum silica frost is handled, or,, can realize the reflux cycle of active sludge body refuse by being pumped into water inlet pipe (501) according to circumstances with all or part of sewage collecting basin that is back to of scum silica frost.Flow to the filtrating area of bottom through the water after top, air supporting biological filter (502) the air supporting biological treatment.The same with common BAF, filtrating area is equipped with bio-filter granulated filler (507), flushing inlet pipe (508), flushing water inlet pipe (509), treat effluent pipe (510).As required, can be with the filtrating area lattice, backwash is single-frame carried out.The air supporting biological filter can adopt various engineering materialss to do the structures of multiple planeforms such as squarely, circle, annular.Generally, sanitary sewage promptly can reach sewage drainage standard through the primary treatment of aforesaid device in the time about 1 hour, can also reach water reuse standard in the consumable water of sight and amusement under suitable condition.
Scum silica frost district in dissolved air flotation, since the microbubble enrichment a large amount of organism, a large amount of microorganism flco, the very high concentrations of microorganism, mixed solution concentration of suspension (MLSS) can reach more than 1.0%, and a large amount of oxygen supplies is arranged in the bubble, so the efficient of aerobe reaction is high, this be at present any other aerobe facture normally to move institute inaccessiable.
Four,
The present invention is on the basis of air-float technology, by improving the microorganism total amount of air flotation pool, dissolved air flotation and biological treatment is finished in same container, realizes the efficient processing to sewage.
Air flotation pool described in the present invention has only been mentioned its basic structure and principle, but the equipment of practical application is in order to reach good effluent quality, the production method of technical process, microbubble is a lot, and structure formation is also varied, and a lot of equipment also are added with inclined tube, swash plate, waved plate etc.As long as improving the method for the microorganism total amount of air flotation pool does not conflict with the work of air flotation pool, can dissolved air flotation and biological treatment be finished in same container on the basis of various air flotation pools, they are changed becomes air supporting biological treating equipment of the present invention.
The method that improves the microorganism total amount of air flotation pool has: rationally prolong the residence time of scum silica frost at air flotation pool; Scum silica frost refluxes; The bio-contact oxidation filler is set in the flotation separation zone; At exhalant region the biologic packing material district is set.
Rationally prolonging the method for scum silica frost in the residence time of air flotation pool has: increase the height of scum silica frost stacking area, prolong the scum silica frost residence time; Spray on the scum layer with weep, make the part scum silica frost get back to the flotation separation zone, continue to participate in biochemical reaction; Stir scum layer with air pocket or mechanism; The operation that the scum silica frost device is scraped in control rationally.
Realize that the method that scum silica frost refluxes has: scum silica frost is back near sewage collecting basin, suction culvert or the water-in, realizes the backflow of active sludge; Adopt pump or other mechanisms to make scum silica frost get back to correct position in the water.
The bio-contact oxidation filler is set in the flotation separation zone, is a kind of microbial immobilized technology, and application prospect is better.Various bio-contact oxidation fillers can adopt, as various honeycomb fillers, soft and semi soft packing, various showy type filler, multiaspect hollow ball filler, easily with water mobile granulated filler etc.Mobile filler can adopt the cage type device to install in place.As long as adopt suitable fixing means to keep filler zone in position, adopt the demoulding clogging-preventing measures, various fillers can use, but to note that Anti-lost is arranged, measure such as anti-floating, anti-clogging plug could guarantee result of use.
Air supporting exhalant region in the micro bubble generation device bottom also can be provided with various forms of biological contact fillers, can play certain biological treatment effect equally, and honeycomb type, flat, corrugated plate dst filler can also play centrifugation, improve effluent quality.
It is better that air supporting exhalant region in the micro bubble generation device bottom is provided with the effect of biological filter filtrating area.The filtrate kind that suitable BAF is used is a lot, and they nearly all can be used in the air supporting biological filter.The ideal filtrate should have bigger voidage, sizeable through-hole structure is arranged, and suitable proportion and particle diameter are difficult for loss, long service life, and cost is low.
In the micro bubble generation device bottom biological filter is set reasonably,, can realizes nitrification and denitrification, realize the biological denitrificaion processing sewage by rational design and running control.
Adding in the water that need are handled has adsorbing flocculation agent or other medicaments to phosphoric acid salt, can reduce the content of phosphorus in the water outlet.
Above-mentioned method can be selected wherein a certain, also can select two or multinomial simultaneously, through reasonably combination, can reach effect preferably, becomes the air supporting biological treating equipment with practical value.
The treatment process that adds other can also be made up in air supporting biological treating equipment of the present invention inside, make equipment can handle high density or unmanageable organically-polluted water better, various technologies such as for example electrolysis, the little flocculation of electrolysis, chemical oxidation, chemical catalytic oxidation, photochemical oxidation, electron beam catalyzed oxidation.Such combination is the combination of the formula that plays with building blocks of a kind of space and process, can reduce the floor space of overall process flow.
A relative isolated district that disinfects with other parts can be set near the air supporting biological treating equipment water outlet, make the Biological indicators of equipment water outlet reach higher standard.Sterilization can be adopted methods such as dosing, electrolysis, treatment with ultraviolet light.
The main part of air supporting biological treating equipment can be selected various engineering materials manufacturings for use according to requirement of engineering, as carbon steel, concrete, glass reinforced plastic, plastics or stainless steel etc.
The essential micro bubble generation device of air supporting is of a great variety, except traditional pressure air-dissolving air-float, also has various ways such as impeller stirring-type, air-breathing water pump type, jet ejection-type, electrolysis-type, can adopt as long as suppress the microbial growth breeding not obviously.
When being used for sewage treatment project, the air supporting biological treating equipment generally should supportingly have equipment such as microbubble generation systems such as pressure air-dissolving system or air-breathing dissolved air water pump, cohesion and adding system, scum silica frost treatment system, air supporting biological filter also should be furnished with auxiliary facilities such as flushing gas blower, wash-water pump.Usually Inlet and outlet water, the wash-down water air pipe system of equipment need water distribution, air distributing device.
The relative position of water inlet pipe of the present invention in equipment, flow direction etc. also have the form of multiple variation, can enter at the slave unit top as water inlet pipe, also pass through water dispensing apparatus etc. behind the water access arrangement.
In order to strengthen the supply of dissolved oxygen, improve the effect of sewage disposal, molten gas gas can adopt oxygen-rich air or purity oxygen.
Five,
Be example with concrete sewage disposal project below, further specify implementation method of the present invention and effect.
The sanitary sewage flow that certain sub-district need be handled is 10t/h, and main water-quality guideline is: COD230mg/l, BOD 100mg/l, SS 120mg/l, ammonia nitrogen 35mg/l.
Integrated wastewater discharge standard (GB8978-1996) predetermined process water secondary discharge standard is: COD 120mg/l, BOD 30mg/l, SS 30mg/l, ammonia nitrogen 25mg/l; First discharge standard is: COD 60mg/l, BOD 20mg/l, SS 20mg/l, ammonia nitrogen 15mg/l.
As adopt general catalytic oxidation activated sludge process to carry out a biological disposal upon, and the time that catalytic oxidation is handled is 4 hours, and the residence time of settling tank is 1.5 hours, and the net volume of equipment is 10 * (4+1.5)=55m
3Effluent quality can the meeting tier 2 emission standard requirement.If increase secondary flocculation sediment, filtration, process for sterilizing again, effluent quality can satisfy the requirement of general middle water reuse.
According to Inlet and outlet water water quality situation, if select simple air-float technology for use, 0.5 hour residence time in airfloat equipment of sewage, the net volume of equipment is 10 * 0.5=5m
3Effluent quality can reach following index: COD 120mg/l, and BOD 60mg/l, SS 30mg/l, ammonia nitrogen 25mg/l also has certain gap apart from secondary discharge standard.
Add the air supporting biological treating equipment that contacts oxide filler as adopting at air flotation zone, sewage is 0.8 hour residence time in the air supporting biological plant, and the equipment net volume is 10 * 0.8=8m
3Effluent quality is: COD 60mg/l, BOD 30mg/l, SS 30mg/l, ammonia nitrogen 20mg/l, the emission request of meeting tier 2 emission standard.
L.2 hour add the air supporting biological treating equipment (as shown in Figure 5) that catalytic oxidation filler and bottom increase the biological filter as adopting at air flotation zone, the residence time, the net volume of equipment was 10 * 1.2=12m for
3Effluent quality is: COD 35mg/l, and BOD 10mg/l, SS 15mg/l, ammonia nitrogen 10mg/l surpasses the requirement of first discharge standard, and effluent quality satisfies the consumable water of sight and amusement water quality standard after an amount of sterilization, and water is recycled in can be used as.
Six,
Technical characterictic of the present invention is: dissolved air flotation technology and aeration and biological treatment process organically are combined in the container, and dissolved air flotation technology and aeration and biological treatment process almost are to finish synchronously, have following characteristics:
1, just can finish in a container the processing of organically-polluted water, the volume of equipment utilization ratio is high, and occupation area of equipment is minimum.
The medium-sized municipal sewage plant of 40,000 tons of the amounts of disposing of sewage is an example with day, if adopt novel Round Sump integrative oxidation ditch process, the time that sewage needs to stop in the pond is 24 hours, and the floor space of oxidation ditch is 10000m
2If adopt common catalytic oxidation activated sludge process to carry out a biological disposal upon, the time that catalytic oxidation is handled is 4 hours, and floor space is 1800m
2, the residence time of settling tank is 2 hours, floor space is 1000m
2If adopt air supporting biological filter equipment shown in Figure 5, occupation area of equipment only needs 500m
2, can make a cover or two cover suite of equipment.
2, air supporting biological treating equipment high energy saving.
Contain a large amount of organic particulate matters in the general organically-polluted water.These organic particulate matters constantly are degraded to the organism of solubility and transfer in the water.If adopt general aeration and biological to handle, just needing to consume a large amount of dissolved oxygens could decompose these oxidation operations, has increased the power consumption of aerating system so greatly.The air supporting biological treating equipment is directly removed most of suspended substances then directly by dissolved air flotation with physical method for separation, significantly reduced overall power consumption.
The gas replenishment process of air supporting biological treating equipment not only plays the effect of air-dissolving air-float, also plays the effect to the microorganism oxygen supply simultaneously, is to kill two birds with one stone.This is the little major reason of overall energy consumption of air supporting biological treating equipment.
3, processing efficiency is high
In order to improve the processing efficiency of bio-reactor, people have adopted several different methods to improve microorganism concn and activity in the bio-reactor.For example, being provided with mud in activated sludge process refluxes and improves microorganism concn, the microorganism active mud that high density is all arranged in sequence bioreactor, membrane bioreactor, the effect of bio-contact oxidation filler also is by microbial immobilized, improves the microorganism concn in the bio-reactor.
In the air supporting biological treating equipment, the microorganism flco is taken to its upper side by microbubble, forms the suspension slime layer in the zone of suitable thickness.In the suspension slime layer, the very microorganism of high density is arranged, there is the microbubble that is mingled with in a large number that oxygen is provided in water, so there is a high efficiency aerobic microbiological reaction zone here.
4, reach higher effluent quality standard easily
If adopt air supporting biological filter equipment shown in Figure 5, compare with the common air supporting biological treating equipment that does not add the biological filter, only need increase equipment, suitable filtrate, the air water flushing facility of increase, the equipment and materials that is increased seldom, do not increase the floor space of primary device, so cost of equipment increases seldom.In addition, the part of increase has been equivalent to increase the technology of BAF, does not but need to increase the aeration facility, does not also need to increase the power consumption of aeration, has very high Technological Economy so increase the biological filter part.Air supporting biological filter equipment gets the effluent quality height, and when handling common sanitary sewage and municipal effluent, effluent quality is easy to reach middle water reuse water quality standard such as consumable water of sight and amusement.
5, the air supporting biological treating equipment is made the equipment of various processing poweies easily, and the engineering construction cycle is short.
Because compact construction, equipment volume is little, and the air supporting biological treating equipment is easy to make the suite of equipment of the electromechanical integration of separate unit processing power 0.1-4000t/h.For engineering construction side, can greatly shorten the construction period.
Seven,
In sum, air supporting biological treating equipment principle of the present invention is simple, implement easily, have in engineering is used that processing efficiency is high, floor space is little, less investment, construction period weak point, economic operating cost, characteristics that effluent quality is good, have technology economy advantage very significantly.
Because floor space is greatly dwindled, and makes the air supporting biological treating equipment can enter the downtown area, enters the residential quarter, enters the hotel, even enters in the office block.After the air supporting biological treating equipment enters the downtown area, can save a large amount of blowdown pipe network construction investments, the pipeline network construction expense of water reuse in saving simultaneously, a large amount of energy expenditures that the long-distance collection conveying of elimination municipal effluent, reuse water are carried.
Equipment of the present invention can purifying organic polluted energy-efficiently water, except that minority contains microorganism is played the purifying treatment that almost is applicable to all organically-polluted waters the inhibiting organically-polluted water of strong toxicity, can make the organically-polluted water one step processing of most of basic, normal, high concentration up to standard, the organically-polluted water of extra heavy concentration may need the suitable treatment process of connecting.The equipment of some pattern of the present invention can make most of municipal effluents one step processing reach water reuse water quality standard in the view amusement usefulness.
The present invention is applicable to that also handling the higher surface water of natural water, particularly suspension content that is subjected to Organic pollutants carries out step processing, removes suspended substance and organic pollutant simultaneously, through technologies such as sterilizations, reaches the relevant water quality standard of feedwater after the treatment and purification.
The present invention has tangible advance, novelty and practicality, to municipal sewage treatment, trade effluent, will bring very far-reaching influence for the technical development of water treatment.
Claims (19)
1, a kind of processing contains the air-floated biological treatment process and the equipment of the natural water of organic pollutant or sanitary sewage, municipal effluent, trade effluent, it is characterized in that dissolved air flotation technology and biological treatment organically are combined in the container, organically-polluted water dissolved air flotation and biological treatment through carrying out simultaneously in container with needs are handled makes organically-polluted water obtain fast purification.
2, a kind of air-floated biological treatment process as claimed in claim 1 and equipment, it is characterized in that by improving the total amount of the microorganism in the air flotation pool, the inflation and the centrifugation that utilize air-float technology to produce make dissolved air flotation and biological treatment carry out simultaneously in a container.
3, the processing method of the microorganism total amount in the raising air flotation pool as claimed in claim 2 is characterized in that particularly the volume in scum silica frost district is realized by enlarging the volume of air flotation zone.
4, the processing method of the microorganism total amount in the raising air flotation pool as claimed in claim 2 is characterized in that setting up the bio-contact oxidation filler at air flotation zone, and these fillers are fixed on the certain position of air flotation zone, or movable in certain scope.
5, the processing method of the microorganism total amount in the raising air flotation pool as claimed in claim 2, it is characterized in that spraying on the scum layer with weep stream, or stir scum layer, or make the part surface scum silica frost get back to the appropriate location of air flotation pool with pump delivery with air pocket or mechanism.
6, the processing method of the microorganism total amount in the raising air flotation pool as claimed in claim 2 is characterized in that the operation that the scum silica frost device is scraped in control rationally, prolongs the residence time of scum silica frost at air flotation pool.
7, the processing method of the microorganism total amount in the raising air flotation pool as claimed in claim 2, it is characterized in that the scum silica frost that will partly or entirely scrape the slag discharge is back near the water-in of sewage collecting basin, intake pump inlet, suction culvert or air supporting biological treatment tank, realizes the backflow of biological activity mud.
8, the processing method of the microorganism total amount in the raising air flotation pool as claimed in claim 2, it is characterized in that near micro bubble generation device and/or the air supporting exhalant region of bottom is provided with various forms of biological contact fillers, can play certain biological treatment effect, simultaneously can also play centrifugation, improve effluent quality.
9, as claimed in claim 8 near micro bubble generation device and/or the air supporting exhalant region of bottom the processing method of biological contact filler is set, the mode that it is characterized in that being provided with filler is the submerged biological filter, used bio-filter stuffing is natural or the artificial granulate material, constitutes air supporting biological filter equipment as shown in Figure 5.
10, air supporting as claimed in claim 9 biological filter equipment, it is characterized in that by enlarging the volume of biological filter, cooperate the adjustment of oxygenation, make the oxygen-starved area of the bottom formation of biological filter, make entire equipment finish the nitrated of nitrogen element and anti-digestion, reach the effect that biological denitrificaion is handled, promptly constitute biological denitrificaion air supporting biological filter.
11, the processing method of the microorganism total amount in the raising air flotation pool as claimed in claim 2 is characterized in that selecting two or more methods to make up in claim 3,4,5,6,7,8,9,10 method, to reach better treatment effect.
12, air-floated biological treatment process as claimed in claim 1 and equipment is characterized in that the oxygen concentration that bubble that micro bubble generation device that air supporting adopts produces contains is higher than air, thereby improve the oxygen supply amount of biological treatment.
13, air-floated biological treatment process as claimed in claim 1 and equipment, its micro bubble generation device is forms such as vane type, jet-type or water pump type, it is characterized in that the bubble that is produced not only has microbubble, also has bigger bubble simultaneously, can make the scum layer and/or the bio-contact oxidation filler on water surface top obtain suitable stirring, thereby improve biological treatment effect.
14, air-floated biological treatment process as claimed in claim 1 and equipment is characterized in that also being provided with in the appropriate location of micro bubble generation device top certain distance the aerating apparatus (406) of biological treatment usefulness.
15, air-floated biological treatment process as claimed in claim 1 and equipment, it is characterized in that near micro bubble generation device or the bottom is provided with devices such as separating inclined tube, swash plate or waved plate, the main raising separating effect that plays a part can produce certain bio-contact oxidation effect simultaneously again.
16, air-floated biological treatment process as claimed in claim 1 and equipment, it is characterized in that at the inner treatment process that adds other that makes up of air supporting biological treating equipment, various technologies such as for example electrolysis, the little flocculation of electrolysis, chemical oxidation, chemical catalytic oxidation, photochemical oxidation, electron beam catalyzed oxidation, make equipment can handle high density or unmanageable organically-polluted water better, improve treatment effect.
17, air-floated biological treatment process as claimed in claim 1 and equipment is characterized in that near air supporting biological treating equipment water outlet being provided with and disinfect the district, make the Biological indicators of equipment water outlet reach the requirement of higher standard.
18, air-floated biological treatment process as claimed in claim 1 and equipment is characterized in that reasonably selecting 2 kinds or multiple the combination in the method for Accessory Right requirement 11,12,13,14,15,16,17, to improve treatment effect.
19, air-floated biological treatment process as claimed in claim 1 and equipment, it is characterized in that phosphoric acid salt there are medicaments such as adsorbing flocculation agent of precipitation such as molysite in the certain position adding of equipment, when improving the dissolved air flotation effect, can also improve the clearance of air supporting biological treating equipment to phosphoric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02125202A CN1413916A (en) | 2002-07-17 | 2002-07-17 | Air-floated biological treatment process and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02125202A CN1413916A (en) | 2002-07-17 | 2002-07-17 | Air-floated biological treatment process and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1413916A true CN1413916A (en) | 2003-04-30 |
Family
ID=4745480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02125202A Pending CN1413916A (en) | 2002-07-17 | 2002-07-17 | Air-floated biological treatment process and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1413916A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100361911C (en) * | 2005-04-06 | 2008-01-16 | 中国科学院成都生物研究所 | A biological flotation treatment method for oily sludge |
| CN101993157A (en) * | 2010-09-10 | 2011-03-30 | 孙卫东 | Technical method for recycling sewage in regeneration process of waste plastics |
| CN101643301B (en) * | 2009-09-15 | 2012-05-09 | 上海青溪环保科技有限公司 | Method for purifying oil-containing waste water of catering and complete equipment thereof |
| CN102531150A (en) * | 2012-02-20 | 2012-07-04 | 无锡工源机械有限公司 | Biological air floating treatment device |
| CN101842323B (en) * | 2007-08-28 | 2012-10-10 | 西安大略大学 | Liquid-solid fluidized bed waste water treatment system for simultaneous carbon, nitrogen and phosphorus removal |
| CN103539318A (en) * | 2013-10-31 | 2014-01-29 | 福州城建设计研究院有限公司 | Air flotation biological filter tank integrated equipment and control method thereof |
| CN103693733A (en) * | 2012-09-27 | 2014-04-02 | 中国石油化工股份有限公司 | Air-flotation aeration-type biofilter treatment system |
| CN104118939A (en) * | 2014-07-03 | 2014-10-29 | 济南大学 | An anaerobic-aerobic/electro-catalysis coupled water purification system and a water purification method |
| CN104150707A (en) * | 2014-07-25 | 2014-11-19 | 中国环境科学研究院 | Device and method for treating sewage by using biological rotating disc |
| CN108821516A (en) * | 2018-07-26 | 2018-11-16 | 陈剑璋 | A kind of hospital gauze degreasing sewage-treatment plant |
| CN108911435A (en) * | 2018-09-06 | 2018-11-30 | 浙江东盛印染有限公司 | A kind of dyeing and printing sewage processing system and processing method |
| CN112607960A (en) * | 2020-11-27 | 2021-04-06 | 山西焦化股份有限公司 | Optimization and improvement method for biochemical treatment load in wastewater treatment |
| CN117164167A (en) * | 2023-10-13 | 2023-12-05 | 江苏龙腾工程设计股份有限公司 | A fishery photovoltaic complementary aquaculture tailwater ecological filter dam system |
| CN117902791A (en) * | 2024-03-06 | 2024-04-19 | 常州维清环境科技有限公司 | Petrochemical wastewater treatment device |
-
2002
- 2002-07-17 CN CN02125202A patent/CN1413916A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100361911C (en) * | 2005-04-06 | 2008-01-16 | 中国科学院成都生物研究所 | A biological flotation treatment method for oily sludge |
| CN101842323B (en) * | 2007-08-28 | 2012-10-10 | 西安大略大学 | Liquid-solid fluidized bed waste water treatment system for simultaneous carbon, nitrogen and phosphorus removal |
| CN101643301B (en) * | 2009-09-15 | 2012-05-09 | 上海青溪环保科技有限公司 | Method for purifying oil-containing waste water of catering and complete equipment thereof |
| CN101993157A (en) * | 2010-09-10 | 2011-03-30 | 孙卫东 | Technical method for recycling sewage in regeneration process of waste plastics |
| CN102531150A (en) * | 2012-02-20 | 2012-07-04 | 无锡工源机械有限公司 | Biological air floating treatment device |
| CN103693733B (en) * | 2012-09-27 | 2016-05-25 | 中国石油化工股份有限公司 | A kind of air supporting aeration type biological filter chamber treatment system |
| CN103693733A (en) * | 2012-09-27 | 2014-04-02 | 中国石油化工股份有限公司 | Air-flotation aeration-type biofilter treatment system |
| CN103539318A (en) * | 2013-10-31 | 2014-01-29 | 福州城建设计研究院有限公司 | Air flotation biological filter tank integrated equipment and control method thereof |
| CN104118939A (en) * | 2014-07-03 | 2014-10-29 | 济南大学 | An anaerobic-aerobic/electro-catalysis coupled water purification system and a water purification method |
| CN104150707A (en) * | 2014-07-25 | 2014-11-19 | 中国环境科学研究院 | Device and method for treating sewage by using biological rotating disc |
| CN104150707B (en) * | 2014-07-25 | 2016-01-20 | 中国环境科学研究院 | The apparatus and method that a kind of blodisc is disposed of sewage |
| CN108821516A (en) * | 2018-07-26 | 2018-11-16 | 陈剑璋 | A kind of hospital gauze degreasing sewage-treatment plant |
| CN108911435A (en) * | 2018-09-06 | 2018-11-30 | 浙江东盛印染有限公司 | A kind of dyeing and printing sewage processing system and processing method |
| CN112607960A (en) * | 2020-11-27 | 2021-04-06 | 山西焦化股份有限公司 | Optimization and improvement method for biochemical treatment load in wastewater treatment |
| CN117164167A (en) * | 2023-10-13 | 2023-12-05 | 江苏龙腾工程设计股份有限公司 | A fishery photovoltaic complementary aquaculture tailwater ecological filter dam system |
| CN117164167B (en) * | 2023-10-13 | 2024-03-29 | 江苏龙腾工程设计股份有限公司 | A fishery photovoltaic complementary aquaculture tailwater ecological filter dam system |
| CN117902791A (en) * | 2024-03-06 | 2024-04-19 | 常州维清环境科技有限公司 | Petrochemical wastewater treatment device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107055754B (en) | Circulating zero-valent iron biofilter for strengthening treatment of rural domestic sewage | |
| CN101708917B (en) | Device and method for integrally processing garbage percolate | |
| CN205821108U (en) | A kind of integration MBR sewage disposal device | |
| CN111003906A (en) | Energy-saving and efficient municipal sewage treatment plant construction method | |
| CN106116031A (en) | A kind of efficient treatment process of slaughtering wastewater | |
| CN102775025A (en) | Municipal life wastewater treatment system with high efficiency and low energy consumption | |
| CN101618923A (en) | Wastewater treatment method | |
| CN105084650B (en) | Micro- aeration cycle integrated sewage water biological and ecological processing system and method | |
| CN109970289A (en) | A kind of urban wastewater treatment mentions mark advanced treatment process and device | |
| CN1413916A (en) | Air-floated biological treatment process and equipment | |
| CN203212433U (en) | Rural sewage treatment system | |
| CN103288311B (en) | Slack coal pressure gasification wastewater resourceful treatment method and treatment system as well as application | |
| CN106630379A (en) | Buried type glass fiber reinforced plastic integrated sewage treatment equipment and process | |
| CN100344559C (en) | Method for cyclically utilizing middle water of public toilet sewage and specialized equipment therefor | |
| CN103936230A (en) | Sewage treating method combining activated sludge process with bio-contact oxidation process | |
| CN103723892B (en) | Livestock and poultry wastewater treatment system and treatment method using system | |
| CN203112657U (en) | Constant-effluent variable-load SVBR (Steady outflow Variable load Biological Reactor) sewage treater | |
| CN108358394A (en) | A kind of Novel dephosphorization sewage treatment process | |
| CN215480419U (en) | Combined sewage treatment system combining oxidation ditch and deep bed denitrification filter | |
| CN214829796U (en) | Advanced treatment system for treating domestic sewage | |
| CN2576709Y (en) | Night-soil water-water biological treatment circulation reusing apparatus | |
| CN113336314A (en) | A/O-electric flocculation integrated treatment system and process | |
| CN208933186U (en) | A kind of integrated sewage treating apparatus for domestic sewage in rural areas treatment in situ | |
| CN208071544U (en) | A kind of railway communication system production wastewater treatment system | |
| CN206940693U (en) | A kind of mobile integrated sewage disposal device of suitable the Yellow River camp buildings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |