CN1072659A - Drain treatment apparatus - Google Patents
Drain treatment apparatus Download PDFInfo
- Publication number
- CN1072659A CN1072659A CN92113367A CN92113367A CN1072659A CN 1072659 A CN1072659 A CN 1072659A CN 92113367 A CN92113367 A CN 92113367A CN 92113367 A CN92113367 A CN 92113367A CN 1072659 A CN1072659 A CN 1072659A
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- CN
- China
- Prior art keywords
- cylinder
- treatment apparatus
- bubble
- drain treatment
- aerating apparatus
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- 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.)
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
A kind of drain treatment apparatus that has aerating apparatus, described aerating apparatus can discharge the bubble of oxygen rich gas or methane gas to life and industrial water drainage effectively.Aerating apparatus vertically is arranged on the bottom of draining treatment trough, and it is made up of the cylinder of fixing spiral plate on the inwall and the gas dispensing mouth that keeps certain intervals ground being provided with peristome under cylinder lower opening portion.It is contraction-like gradually that the integral body of cylinder or upper portion are, and the central shaft of cylinder is provided with the support column of supporting spiral plate, and the lower opening portion of cylinder is suitable inwardly to be punctured into.The spiral plate that is fixed on the cylinder inwall has many, and its lead angle is advisable with 0.7～1.3.
Description
The present invention relates to be used for the drain treatment apparatus of living drainage and industrial water drainage, particularly have the bubble that can discharge oxygen rich gas, methane gas etc. in draining also can form the aerating apparatus of powerful and stable cycling stream in the draining treatment trough drain treatment apparatus.
The aeration mode of drain treatment apparatus in the past has following two kinds, that is: a kind of mode is, the ring-type in being arranged on aerator tank or the micropore of tabular aerating apparatus are sprayed onto forced air the draining, so that tinyization of bubble.Another kind of mode is that the dispensing air is so that tinyization of bubble in the draining stream that the shear strength because of revolving vane or bubble jet etc. forms.
Comprise (1) " the diffuser formula " that be known as, (2) " gas that looses is board-like ", (3) modes such as " the inflator formulas of loosing " in preceding a kind of mode.In these modes, (1) be to be to be micropore by the cylindrical body of porous matter industrial ceramics system by the slot-shaped micropore on the plectane of cutting the rubber system of being located at, (3) by being located in micropore, (2) on the tube wall, forced air is sprayed onto among the draining, to scheme that bubble is become tiny.The meltage of oxygen is to regulate the dispensing amount of tiny bubble and fixed by micropore in the draining.
The back comprise in a kind of mode be known as (4) " revolving vane formula ", (5) " jet-propelled ", (6) single tube aeration type " etc. mode.(4) be to collide air bolus to obtain tiny bubble with the blade that rotates, (5) be in water, to produce gas-liquid two-phase flow, make bubble become tiny in the process of bubbles entrain water, (6) are that the two-phase flow of air and water and thrust are clashed into so that bubble is become tiny.Oxygen dissolution amount in the draining is decided the collision speed of thrust by the revolution of revolving vane, the speed or the two-phase flow of bubble jet.
In addition, have each aerating apparatus of above-mentioned performance, when aeration, carry out necessary adjusting by the operational throughput of air and the quantity that is provided with of aerating apparatus basically.
Yet, a kind of for developing with energy-conservation and handle the high-performance drain treatment apparatus that draining is a purpose expeditiously, just need especially to produce a large amount of oxygen enrichment bubbles, and can be controlled the generating capacity of bubble.Also need to form a powerful and stable cycling stream, allow this cycling stream drive oxygen enrichment bubble, make in the drain treatment apparatus equably oxygen enrichment bubble abrim.
But when adopting aforesaid way to carry out aeration, nearly all be by the spraying mode or the shear strength of revolving vane or thrust produces bubble, following various shortcoming is arranged.
For example, by diffuser, the gas plate that looses, loose inflator in water in the jet spraying mode, how little the micropore setting of not sinking is, all can be subjected to its capillary influence when the ejection from micropore because of bubble, the result produces big extremely several millimeters the air pocket of diameter, and can not produce littler bubble.
Adopt the diffusing gas mode of this kind in addition,, can produce the problem that spray orifice stopped up and increased power charge along with the growth of runtime.
In the revolving vane mode, in order to produce air pocket, need high speed rotation, therefore there is the power charge problem and accelerates and vibrative problem because of the blade corrosion that makes of air pocket.
As for jet mode, all bigger superiority is being arranged aspect the generating capacity of the diameter of the micro-bubble that produces and bubble unlike in the past aerating apparatus.
And also there are the little problem of generating capacity of micro-bubble in thrust and the mode that two-phase flow clashes into mutually.
The aerating apparatus of drain treatment apparatus in the past is because of there being the problems referred to above, and is little such as the generating capacity of micro-bubble, so the residence time of bubble in draining is short, the meltage of oxygen in draining can not get increasing.In addition, the generating capacity of micro-bubble can not be controlled simply, thereby processing can not be implemented effectively draining.
That is to say, have following some problem as above-mentioned the sort of aerating apparatus.
(1) can not be in a large number and diameter takes place equably is 1mm with the micro-bubble down to about number μ m, can not promote gas-liquid to upgrade significantly.
(2) can not lean on mechanical means to control diameter, distribution and the generating capacity of bubble described in above-mentioned (1) simply.
(3), just can not in drain treatment apparatus, form necessary cycling stream and play stirring action if do not set up whipping appts.
(4) because being arranged, revolving vane or thrust can not reduce the pressure-losses.
(5) because of clashing into mutually with two-phase flow, revolving vane or thrust destroyed microorganism and active sludge, thus might be to forming and keeping the necessary coenocorrelation of sewage purification bring obstacle.
(6) stop up because of the gas that looses continuously causes pore, reduce the gas efficient of loosing, thereby the pressure-losses is increased, so just can not turn round continuously for a long time, can not save the running funds significantly.
(7) comprise that the total volume of the device of aerating apparatus and air compressor is bigger, thereby be subjected to space constraint when installing, be difficult to the miniaturization of realization equipment.
(8) be difficult to accomplish suitably control stirring extent and the oxide treatment of COD composition or the breeding of aerobe in the aerator tank by diameter, distribution situation and the generating capacity of control bubble.
For solving the problem of above-mentioned prior art, the present application people is through lucubrate repeatedly, develop a kind of have can be easily to the drain treatment apparatus of the energy-saving aerating apparatus of draining dispensing micro-bubble.The present invention is a drain treatment apparatus as described below:
The 1st invention is a kind of drain treatment apparatus, it is characterized in that, rotary aerating apparatus in this drain treatment apparatus vertically is located at the bottom of draining treatment trough, and described rotary aerating apparatus comprises: the gas dispensing mouth of fixing the cylinder of spiral plate within it on the wall and being provided with peristome under cylinder lower opening portion with keeping certain intervals.
The 2nd invention is according to the described drain treatment apparatus of the 1st invention, it is characterized in that, described cylinder be one all or upper portion be contraction-like gradually cylinder.
The 3rd invention is according to the described drain treatment apparatus of the 1st or the 2nd invention, it is characterized in that described spiral plate has many.
The 4th invention is according to any described drain treatment apparatus in the 1st to the 3rd invention, it is characterized in that, is provided with the support column of spiral plate on the central shaft of described cylinder.
The 5th invention is according to any described drain treatment apparatus in the 1st to the 4th invention, it is characterized in that the bore of described cylinder lower opening portion is diminishing.
The 6th invention is according to any described drain treatment apparatus in the 1st to the 5th invention, it is characterized in that the spiral plate that is fixed on the cylinder inwall has many, and its lead angle is 0.7～1.3.
The present invention has the following advantages:
The 1st, aerating apparatus of the present invention is compared with the spraying formula aerating apparatus of prior art, and the pressure-losses reduces, and the incidence of the bubble that discharges in the draining of flowing improves greatly.
The 2nd, the mean diameter of the micro-bubble that rotary aerating apparatus of the present invention produced can be as small as 100 μ m to tens of μ m, therefore, draining is compared with technology in the past with the contact area of oxygen enrichment bubble can bring up to 10～100 times, and the residence time of bubble comparablely extended to 10～100 times in the past, thereby the meltage of oxygen is significantly increased.
The 3rd, owing to adopt the cylinder of shrinkage type gradually, the rotation upflow velocity of the gas-liquid two-phase flow that therefore rises is accelerated, thereby forms a powerful and stable cycling stream in draining treatment trough (contact groove).And, owing to rotatory strengthens a fluid stream of rising gas-liquid two-phase flow is dwindled, thereby almost do not having the pressure-losses in the contraction-like cylinder gradually.
The 4th, because the bore of cylinder lower opening portion is diminishing, so the air lift effect of following gas to rise is further improved, thereby near sedimentation mud the bottom land etc. is kicked up, to prevent near the corruption the bottom land, and can increase frequency of exposure with microorganism, improve the purification efficiency of draining.
The 5th, carry out existing the problem that microorganism and mud are damaged in the mode of aeration in the past the lean on draining and the blade of high speed rotating or the collision of thrust, but have this problem hardly in the present invention.
The 6th, the air bolus that sprays from the air delivery pipe that is located at the below is to become tiny bubble in the process that rises in cylinder, thereby the pore obstruction can take place aerating apparatus hardly.
Below in conjunction with several accompanying drawings embodiments of the invention are illustrated:
Fig. 1 is the one-piece construction synoptic diagram of drain treatment apparatus that has the rotary aerating apparatus of the embodiment of the invention;
Fig. 2 is partly cut-away's oblique drawing of the cylinder of the rotary aerating apparatus of the embodiment of the invention;
Fig. 3 is partly cut-away's oblique drawing of the rotary aerating apparatus of the embodiment of the invention;
Fig. 4 (a), Fig. 4 (b) are respectively the orthographic plan and the longitudinal section of the rotary aerating apparatus of the embodiment of the invention;
Fig. 5 be in the past the single hose aerating apparatus and the distribution plan of diameter of the bubble that aerating apparatus took place that adopted of the above embodiment of the present invention, quantity etc.
Fig. 1 is the one-piece construction synoptic diagram that has the drain treatment apparatus of rotary aerating apparatus of the present invention.At first the draining that desire is handled is sent into scale tank 52 through filter screen 50, retention basin 51, introduces contact groove 53 then.In contact groove 53,, between the contact equipment, aerating apparatus 30 of the present invention is installed by biochemical oxide treatment being carried out in draining attached to the microorganism on the contact equipment 54.From the upper end of contact groove 53 a part of treated water is introduced final settling bath 55, and then clarifying water is introduced chlorination groove 57, the water that will purify is thus drawn.
The excess sludge that is deposited in contact groove 53 lowest parts or settling bath 55 bottoms is discharged to outside the treatment system through mud fairlead 56.P1～P2 is a pump among the figure.
Among above-mentioned drain treatment apparatus, aerating apparatus is shown in Fig. 2 and following each figure thereof, owing to used internal fixation the cylinder of spiral plate, so, do not resemble use diffuser prior art because of there being the pressure-losses to need a large amount of energy, in addition, owing to being revolving, so astigmatism tracheae mode can only not produce large diameter bubble like that, but can produce the minimum two kind bubbles bigger of diameter with diameter.So just can enlarge the contact area of micro-bubble and draining, improve the dissolved efficiency of gas in water significantly, thereby improve aeration efficient, reduce COD and BOD in the draining.
Fig. 2 is partly cut-away's oblique drawing of the cylinder of the rotary aerating apparatus that drain treatment apparatus adopted in the embodiment of the invention.In Fig. 2,60 is (resin system) cylinder, and 61 is spiral plate, the 62nd, and the spiral plate support column, the 63rd, its structure has been dwindled the gas-liquid introduction part for the bore with lower opening portion.
Fig. 3 is partly cut-away's oblique drawing of the rotary aerating apparatus that drain treatment apparatus adopted of the embodiment of the invention, and Fig. 4 (a), Fig. 4 (b) are respectively its orthographic plan and longitudinal section.
Gas (normally air) is supplied with by air shooter 65, and is applied in the cylinder shown in Figure 2 60 that is fixed on the resting support 64 through air dispensing mouth 66.In addition, resting support 64 and gas-liquid introduction part 63 and air shooter 65 are fixed together by welding, and they are fixed on the aerating apparatus mounting seat 67 by " U " font hoop 68.
In Fig. 3, air is pressed the arrow direction indication from air shooter and is flowed into, and is applied in the water of contact groove in air dispensing mouthful 66 shapes with air mass.This air mass is imported in the gas-liquid introduction part 63 in the process that rises by buoyancy, increases rotation while rise along spiral plate 61 then, and becomes tiny because of the shear strength that forms between itself and the intravital rotation draining of cylinder.In the present embodiment, spiral plate 61 is equipped with 4 altogether with 90 ° of intervals, and its lead angle β is 1.0.Usually lead angle β is advisable with about 0.7～1.3.
This gas-liquid two-phase flow that is comprising the micro-bubble that generates, its lift velocity the cylinder 60 that shrinks gradually ' in be further enhanced, thereby in the contact groove, form a powerful and stable cycling stream continuously, so that micro-bubble can be transported to the dark bottom of groove.
Fig. 5 be in the past the single hose aerating apparatus and the distribution plan of diameter of the bubble that aerating apparatus took place that adopted of the above embodiment of the present invention, quantity etc.The two is all measured with following equal conditions:
Experimental tank (1660mm * 520mm * the 1860mm of L * B * H)
The depth of water (D) 1600mm
Air capacity (QA) 130(l/min)
Measure place (depth of water) 930mm
(width) 80mm
(apart from width between centers) 560mm
Aerating apparatus of the present invention in drain treatment apparatus so that a plurality of being advisable to be set, can it be one group with 3～5 for example with it, open with suitable separating distance, be located at the central part and the both sides of draining treatment trough, can in drainage tray, forming stable and powerful cycling stream for the most suitable.
As above embodiment was described in detail, the present invention can give play to following excellent effect:
(1) aerating apparatus of the present invention is compared with the spraying formula aerating apparatus of prior art, and the pressure-losses reduces, and the incidence of the bubble that discharges in the draining of flowing greatly improves.
(2) in spraying mode in the past, although the micro-pore diameter of the irregular porous matter pipe that industrial ceramics etc. can be made narrows down to the degree in μ m, but the diameter of the bubble that is discharged out by this micropore on average still can reach several mm, and the mean diameter of the micro-bubble that rotary aerating apparatus of the present invention discharged can be as small as 100 μ m to tens of μ m.Therefore, can improve the contact area of the bubble of draining and oxygen rich gas etc. to greatest extent, and can prolong the residence time of bubble in draining significantly, its result increases the meltage of oxygen in draining greatly.
The 3rd, owing to adopted the cylinder that shrinks gradually, therefore, rising gas-liquid two-phase flow speed is accelerated, thereby forms a powerful and stable cycling stream in drain treatment apparatus.Simultaneously, because of not having any projection object in the cylinder that shrinks gradually, so almost there is not the pressure-losses.
The 4th, because the bore of cylinder lower opening portion is diminishing, so the air lift effect of following gas to rise is further improved, thereby near sedimentation mud the bottom land etc. is kicked up, to prevent near the corruption the bottom land, and can increase frequency of exposure with microorganism, improve the purification efficiency of draining.
The 5th, carry out existing the problem that microorganism and active sludge are damaged in the mode of aeration in the past the lean on draining and the blade of high speed rotating or the collision of thrust, but do not have this problem fully in the present invention.
The 6th, the air bolus that sprays from the air delivery pipe that is located at the below is to become tiny bubble in the process that rises in cylinder, thereby the pore obstruction can take place aerating apparatus hardly.
Claims (6)
1, a kind of drain treatment apparatus, it is characterized in that, rotary aerating apparatus in this drain treatment apparatus vertically is located at the bottom of draining treatment trough, and described rotary aerating apparatus comprises: the gas dispensing mouth of fixing the cylinder of spiral plate within it on the wall and being provided with peristome under cylinder lower opening portion with keeping certain intervals.
2, drain treatment apparatus according to claim 1 is characterized in that, described cylinder be one all or upper portion be contraction-like gradually cylinder.
3, drain treatment apparatus according to claim 1 and 2 is characterized in that, described spiral plate has many.
4, according to any described drain treatment apparatus in the claim 1 to 3, it is characterized in that, on the central shaft of described cylinder, be provided with the support column of spiral plate.
According to any described drain treatment apparatus in the claim 1 to 4, it is characterized in that 5, the bore of described cylinder lower opening portion is diminishing.
6, according to any described drain treatment apparatus in the claim 1 to 5, it is characterized in that the spiral plate that is fixed on the cylinder inwall has many, its lead angle is 0.7～1.3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3335913A JPH05146792A (en) | 1991-11-27 | 1991-11-27 | Waste water treating device |
| JP335913/91 | 1991-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1072659A true CN1072659A (en) | 1993-06-02 |
Family
ID=18293770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92113367A Pending CN1072659A (en) | 1991-11-27 | 1992-11-20 | Drain treatment apparatus |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH05146792A (en) |
| KR (1) | KR930009930A (en) |
| CN (1) | CN1072659A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3534121B2 (en) * | 1993-10-06 | 2004-06-07 | 財団法人ダム水源地環境整備センター | Aeration method in water |
| KR19980046405A (en) * | 1996-12-12 | 1998-09-15 | 유기범 | Facsimile device with voice message recording function |
| JP5835776B2 (en) * | 2012-05-21 | 2015-12-24 | 株式会社 ソルエース | Air diffuser |
-
1991
- 1991-11-27 JP JP3335913A patent/JPH05146792A/en active Pending
-
1992
- 1992-10-24 KR KR1019920019669A patent/KR930009930A/en not_active Application Discontinuation
- 1992-11-20 CN CN92113367A patent/CN1072659A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR930009930A (en) | 1993-06-21 |
| JPH05146792A (en) | 1993-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |