CN104108786B - A kind of Sewage treatment systems and method - Google Patents
A kind of Sewage treatment systems and method Download PDFInfo
- Publication number
- CN104108786B CN104108786B CN201310130421.1A CN201310130421A CN104108786B CN 104108786 B CN104108786 B CN 104108786B CN 201310130421 A CN201310130421 A CN 201310130421A CN 104108786 B CN104108786 B CN 104108786B
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- CN
- China
- Prior art keywords
- aeration tank
- mixture
- sewage
- secondary sedimentation
- sedimentation basins
- 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.)
- Expired - Fee Related
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title description 14
- 238000005273 aeration Methods 0.000 claims abstract description 147
- 239000000203 mixture Substances 0.000 claims abstract description 85
- 239000010802 sludge Substances 0.000 claims abstract description 50
- 238000004062 sedimentation Methods 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 15
- 238000010992 reflux Methods 0.000 description 12
- 230000005611 electricity Effects 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000005352 clarification Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000004939 coking Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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
- Activated Sludge Processes (AREA)
Abstract
The invention discloses a kind of Sewage treatment systems, for save energy.Comprise: the first aeration tank, be connected with secondary sedimentation basins and the second aeration tank, for receiving pending sewage and the first mixture, and it being mixed with sewage, forming the second mixture; Second aeration tank, is connected with the first aeration tank and the 3rd aeration tank, for receiving pending sewage or the second mixture, forms the 3rd mixture after it being mixed with sewage; 3rd aeration tank, is connected with the second aeration tank and secondary sedimentation basins, for receiving the 3rd mixture; Secondary sedimentation basins, is connected with the first aeration tank and the 3rd aeration tank, for receiving the 3rd mixture flowed into through the 3rd aeration tank, and is treated to active sludge concentrated solution; Also comprise the air lift unit being arranged in the first aeration tank, for by active sludge concentrated solution and air mixed, form the first mixture after enter the first aeration tank.
Description
Technical field
The present invention relates to environment protection and sewage treatment area, particularly a kind of Sewage treatment systems and method.
Background technology
Sewage disposal operation can be set in coking production technique, adopt biological activated sludge method Phenol-Containing Wastewater Treatment.Adopt the system of Wastewater Treated by Activated Sludge Process primarily of three grades of compositions such as plug-flow aeration tank, secondary sedimentation basins.Three grades of plug-flow aeration tanks are adopt pump-type surface aeration impeller the earliest, and 1# surface aeration pond power of motor is generally 45Kw, adopt variable-frequence governor to control aeration impeller rotating speed, to control the content of dissolved oxygen in sludge reflux amount and aeration tank.The general each 30Kw of 2# and 3# surface aeration pond power of motor.In production run process, because aeration tank water surface foam is more, the existence of aeration impeller can affect the oxygenation capacity of aeration tank.
In order to stabilize and increase the content of dissolved oxygen in aeration tank, eliminating foam to the impact of dissolved oxygen, in prior art, changing three grades of pulling flow type surface aeration ponds into three grades of blasting aeration ponds.Because three grades of blasting aeration ponds eliminate the aeration impeller for sludge reflux in 1# aeration tank, sludge reflux must select miscellaneous equipment, generally adopts sludge reflux pump.
Present inventor, in the process realizing the embodiment of the present application technical scheme, at least finds to there is following technical problem in prior art:
Consider that three grades of plug-flow aeration tank waters surface and the secondary sedimentation basins water surface are in this structure present situation of same level substantially, adopt sludge reflux pump obviously comparatively to waste electricity.
Summary of the invention
The embodiment of the present invention provides a kind of Sewage treatment systems and method, for save energy.
A kind of Sewage treatment systems, comprising: the first aeration tank, the second aeration tank, the 3rd aeration tank and secondary sedimentation basins;
Described first aeration tank, is connected with described secondary sedimentation basins and described second aeration tank, for receiving pending sewage, and the first mixture, and it is mixed with sewage, form the second mixture;
Described second aeration tank, is connected with described first aeration tank and described 3rd aeration tank, for receiving described pending sewage or the second mixture, forms the 3rd mixture after pending sewage or described second mixture being mixed with sewage;
Described 3rd aeration tank, is connected with described second aeration tank and described secondary sedimentation basins, for receiving described 3rd mixture;
Described secondary sedimentation basins, is connected with described first aeration tank and described 3rd aeration tank, for receiving described 3rd mixture flowed into through described 3rd aeration tank, and is treated to active sludge concentrated solution;
Also comprise:
Be arranged in the air lift unit of described first aeration tank, for by described active sludge concentrated solution and air mixed, form described first mixture after enter described first aeration tank;
Described air lift unit comprises: mud return line, tapered tube, gas-liquid mixed flow tube, blast main and gas ejector pipe;
Described mud return line, it is connected across between described first aeration tank and described secondary sedimentation basins, for receiving the described active sludge concentrated solution that described secondary sedimentation basins flows into;
Described tapered tube, is connected with described mud return line, for connecting described mud return line and described gas-liquid mixed flow tube;
Described gas-liquid mixed flow tube, is connected with described mud return line by described tapered tube, for receiving and discharging described first mixture;
Described blast main, is connected with described gas ejector pipe, for admission of air;
Described gas ejector pipe, stretches in described mud return line by described tapered tube, for spraying air to mix with described active sludge concentrated solution.
In the embodiment of the present invention, Sewage treatment systems comprises the first aeration tank, the second aeration tank, the 3rd aeration tank and secondary sedimentation basins; Described first aeration tank, is connected with described secondary sedimentation basins and described second aeration tank, for receiving pending sewage, and the first mixture, and it is mixed with sewage, form the second mixture; Described second aeration tank, is connected with described first aeration tank and described 3rd aeration tank, for receiving described pending sewage or the second mixture, forms the 3rd mixture after pending sewage or described second mixture being mixed with sewage; Described 3rd aeration tank, is connected with described second aeration tank and described secondary sedimentation basins, for receiving described 3rd mixture; Described secondary sedimentation basins, is connected with described first aeration tank and described 3rd aeration tank, for receiving described 3rd mixture flowed into through described 3rd aeration tank, and is treated to active sludge concentrated solution; Also comprise: the air lift unit being arranged in described first aeration tank, for by described active sludge concentrated solution and air mixed, form described first mixture after enter described first aeration tank.Replace sludge reflux pump of the prior art with air lift unit, save electricity, more environmental protection.
Accompanying drawing explanation
Fig. 1 is the vertical view of Sewage treatment systems in the embodiment of the present invention;
Fig. 2 is the sectional view of air lift unit in the embodiment of the present invention;
Fig. 3 is the sectional view of gas ejector pipe in the embodiment of the present invention;
Fig. 4 is the main flow figure of sewage water treatment method in the embodiment of the present invention.
Embodiment
In the embodiment of the present invention, Sewage treatment systems comprises the first aeration tank, the second aeration tank, the 3rd aeration tank and secondary sedimentation basins; Described first aeration tank, is connected with described secondary sedimentation basins and described second aeration tank, for receiving pending sewage, and the first mixture, and it is mixed with sewage, form the second mixture; Described second aeration tank, is connected with described first aeration tank and described 3rd aeration tank, for receiving described pending sewage or the second mixture, forms the 3rd mixture after pending sewage or described second mixture being mixed with sewage; Described 3rd aeration tank, is connected with described second aeration tank and described secondary sedimentation basins, for receiving described 3rd mixture; Described secondary sedimentation basins, is connected with described first aeration tank and described 3rd aeration tank, for receiving described 3rd mixture flowed into through described 3rd aeration tank, and is treated to active sludge concentrated solution; Also comprise: the air lift unit being arranged in described first aeration tank, for by described active sludge concentrated solution and air mixed, form described first mixture after enter described first aeration tank.Replace sludge reflux pump of the prior art with air lift unit, save electricity, more environmental protection.
See Fig. 1, it is the vertical view of Sewage treatment systems in the embodiment of the present invention.In the embodiment of the present invention, Sewage treatment systems comprises the first aeration tank 102, aeration tank 101, second, the 3rd aeration tank 103, secondary sedimentation basins 104 and air lift unit 105.
First aeration tank 101 is connected with described secondary sedimentation basins 104 and described second aeration tank 102, for receiving pending sewage, or the first mixture, and it is mixed with sewage, form the second mixture.The mixture of described pending sewage sewage and mud often, first it enter in the first aeration tank 101.Described first mixture refers to active sludge concentrated solution and air and the mixed tri-state mixture of sewage, it is expelled to the first aeration tank 101 by air lift unit 105 after being formed in air lift unit 105, described first mixture mixes with sewage by the first aeration tank 101 again, forms the second mixture.Second mixture flows into the second aeration tank 102.
Have a water-in in first aeration tank 101, it can receive pending sewage.First aeration tank 101 can be connected with secondary sedimentation basins 104 by the first sewage vent line, and is connected with the second aeration tank 102 by the second sewage vent line.
Second aeration tank 102 is connected with described first aeration tank 101 and described 3rd aeration tank 103, for receiving described pending sewage or the second mixture, forms the 3rd mixture after pending sewage or the second mixture being mixed with sewage.The pending sewage received or the second mixture mix with sewage by the second aeration tank 102 again, form the 3rd mixture.3rd mixture 103 flows into the 3rd aeration tank 103.
Second aeration tank 102 can be connected with the 3rd aeration tank 103 by the 3rd sewage vent line.
3rd aeration tank 103 is connected with described second aeration tank 102 and described secondary sedimentation basins 104, for receiving described 3rd mixture.In circulating treatment procedure, what the 3rd aeration tank 103 received is the 3rd mixture.Described 3rd mixture flows into secondary sedimentation basins 104 through the 3rd aeration tank 103.
3rd aeration tank 103 can be connected with secondary sedimentation basins 104 by the 4th sewage vent line.
Secondary sedimentation basins 104 is connected with described first aeration tank 101 and described 3rd aeration tank 103, for receiving described 3rd mixture flowed into through described 3rd aeration tank 103, and is treated to active sludge concentrated solution.Pending sewage or the 3rd mixture flow into secondary sedimentation basins 104 through the 3rd aeration tank 103, because the active sludge in pending sewage or the 3rd mixture and water exist density difference, then active sludge precipitation concentration, form active sludge concentrated solution, be positioned at bottom, clarification sewage is positioned at top, and the mill weir of clarification sewage through secondary sedimentation basins 104 top flows out, and active sludge concentrated solution enters in the air lift unit 105 in the first aeration tank 101 through secondary sedimentation basins 104.
Be provided with water outlet in secondary sedimentation basins 104, for effluent sewerage, said sewage can be clarification sewage herein.The level attitude of described water outlet can lower than the described water-in in the first aeration tank 101.
Air lift unit 105 is arranged in the first aeration tank 101, for by described active sludge concentrated solution and air mixed, form described first mixture after enter described first aeration tank 101.Air lift unit 105 also comprises gas-liquid mixed flow tube 1051, tapered tube 1052, mud return line 1053, gas ejector pipe 1054, blast main 1055, flange 1056 etc., as shown in Figure 2.
Mud return line 1053, it is connected across between described first aeration tank 101 and described secondary sedimentation basins 104, for receiving the described active sludge concentrated solution that described secondary sedimentation basins 104 flows into.
Tapered tube 1052, is connected with described mud return line 1053, for connecting described mud return line and described gas-liquid mixed flow tube.
Gas-liquid mixed flow tube 1051, is connected with described mud return line by described tapered tube 1052, for receiving and discharging described first mixture.
Blast main 1055, is connected, for admission of air with described gas ejector pipe 1054.
Gas ejector pipe 1054, stretches in described mud return line 1053 by described tapered tube 1052, for spraying air to mix with described active sludge concentrated solution.
Wherein mud return line 1053 is connected across between the first aeration tank 101 and secondary sedimentation basins 104, for receiving the described active sludge concentrated solution that described secondary sedimentation basins flows into, active sludge concentrated solution flow to air lift unit 105 bottom from mud return line 1053, the air sprayed with gas ejector pipe 1054 mixes mutually, form liquid, Gu, gas tri-state mixture (i.e. the first mixture), the volume density of this first mixture is obviously less than the density of active sludge concentrated solution, this density extent can affect the height of liquid level lifting and the size of active sludge concentrated solution discharge, the larger then liquid level of density difference promotes higher, active sludge concentrated solution discharge is larger.The volume size of this first mixture determined by the air capacity be mixed into.First mixture, due to the reduction of density, forms impellent, from mud return line 1053 toward rising, via tapered tube 1052, being discharged by gas-liquid mixed pipe 1051, entering the first aeration tank 101.
It is gas ejector pipe one tracheae in the jet lifting gear of single hole as prior art hollow, it is the principle making gas-liquid mixed based on airstream, the caliber of the gas-liquid mixed pipe therefore in prior art in air lift unit can be restricted, can not be too large, be generally 150-200mm, but the air capacity that sprays into can be made so few, or liquid-phase mixing can not be concentrated with active sludge well.Gas ejector pipe 1054 in the embodiment of the present invention can be multihole nozzle, and it at least comprises a perforate, as shown in Figure 3.This gas ejector pipe 1054 can be straight tube, also can bend to round tube, or also can be the jet pipe of other shape.Because it has porous, expand gas-to-liquid contact face, thus can increase the caliber scope of gas-liquid mixed flow tube 1051, such as a kind of caliber of gas-liquid mixed flow tube 1051 can be 1000mm.When gas ejector pipe 1054 comprises multiple perforate, described multiple perforate can be uniformly distributed on gas ejector pipe 1054 also can uneven distribution.
The method of sewage disposal is introduced below by way of specific embodiment.
See Fig. 4, the main method flow process of sewage disposal in the embodiment of the present invention is as follows:
Step 401: the first aeration tank 101 receives pending sewage or the first mixture, and it is mixed with sewage, forms the second mixture.
Step 402: the second aeration tank 102 receives described second mixture, forms the 3rd mixture after it being mixed with sewage.
Step 403: the 3rd aeration tank 103 receives described 3rd mixture.
Step 404: secondary sedimentation basins 104 receives described 3rd mixture flowed into through described 3rd aeration tank 103, and is treated to active sludge concentrated solution.
Step 405: air lift unit 105 by described active sludge concentrated solution and air mixed, form described first mixture after enter the first aeration tank 101.
In the embodiment of the present invention, Sewage treatment systems comprises the first aeration tank 102, aeration tank 101, second, the 3rd aeration tank 103 and secondary sedimentation basins 104; Described first aeration tank 101, is connected with described secondary sedimentation basins 104 and described second aeration tank 102, for receiving pending sewage, and the first mixture, and it is mixed with sewage, form the second mixture; Described second aeration tank 102, is connected with described first aeration tank 101 and described 3rd aeration tank 103, for receiving described pending sewage or the second mixture, forms the 3rd mixture after pending sewage or described second mixture being mixed with sewage; Described 3rd aeration tank 103, is connected with described second aeration tank 102 and described secondary sedimentation basins 104, for receiving described 3rd mixture; Described secondary sedimentation basins 104, is connected with described first aeration tank 101 and described 3rd aeration tank 103, for receiving described 3rd mixture flowed into through described 3rd aeration tank 103, and is treated to active sludge concentrated solution; Also comprise: the air lift unit 105 being arranged in described first aeration tank 101, for by described active sludge concentrated solution and air mixed, form described first mixture after enter described first aeration tank 101.Replace sludge reflux pump of the prior art with air lift unit 105, save electricity, more environmental protection, such as, if adopt sludge reflux pump, when sludge reflux amount is 100m
3during/h, power of motor is 7.5Kw, year current consumption be about 6.57 ten thousand degree, and air lift unit 105 in adopting in the embodiment of the present invention, when sludge reflux amount is 100m
3during/h, consumption tolerance is 36m
3/ h, power consumption is 0.86Kw, year current consumption be about 0.76 ten thousand degree, annual amount of electricity saving is about 5.81 ten thousand degree.The sludge quantity of backflow can be regulated by the size controlling to spray into air capacity, bring larger convenience to sludge reflux operation.Sludge lifting air used can supplement the content of dissolved oxygen in active sludge.And the gas ejector pipe 1054 in air lift unit 105 is designed to multihole nozzle, expands gas-to-liquid contact face, also increase effectively the caliber scope of gas-liquid mixed flow tube 1051.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (6)
1. a Sewage treatment systems, comprising: the first aeration tank, the second aeration tank, the 3rd aeration tank and secondary sedimentation basins;
Described first aeration tank, is connected with described secondary sedimentation basins and described second aeration tank, for receiving pending sewage, and the first mixture, and it is mixed with sewage, form the second mixture;
Described second aeration tank, is connected with described first aeration tank and described 3rd aeration tank, for receiving described pending sewage or the second mixture, forms the 3rd mixture after pending sewage or described second mixture being mixed with sewage;
Described 3rd aeration tank, is connected with described second aeration tank and described secondary sedimentation basins, for receiving described 3rd mixture;
Described secondary sedimentation basins, is connected with described first aeration tank and described 3rd aeration tank, for receiving described 3rd mixture flowed into through described 3rd aeration tank, and is treated to active sludge concentrated solution;
It is characterized in that, also comprise:
Be arranged in the air lift unit of described first aeration tank, for by described active sludge concentrated solution and air mixed, form described first mixture after enter described first aeration tank;
Described air lift unit comprises: mud return line, tapered tube, gas-liquid mixed flow tube, blast main and gas ejector pipe;
Described mud return line, it is connected across between described first aeration tank and described secondary sedimentation basins, for receiving the described active sludge concentrated solution that described secondary sedimentation basins flows into;
Described tapered tube, is connected with described mud return line, for connecting described mud return line and described gas-liquid mixed flow tube;
Described gas-liquid mixed flow tube, is connected with described mud return line by described tapered tube, for receiving and discharging described first mixture;
Described blast main, is connected with described gas ejector pipe, for admission of air;
Described gas ejector pipe, stretches in described mud return line by described tapered tube, for spraying air to mix with described active sludge concentrated solution.
2. the system as claimed in claim 1, is characterized in that, described gas ejector pipe comprises at least one perforate.
3. system as claimed in claim 2, it is characterized in that, when described gas ejector pipe comprises multiple perforate, described multiple perforate is uniformly distributed on described gas ejector pipe.
4. the system as claimed in claim 1, is characterized in that, is provided with a water-in in described first aeration tank, for receiving described pending sewage.
5. system as claimed in claim 4, is characterized in that, be provided with a water outlet, for effluent sewerage in described secondary sedimentation basins.
6. system as claimed in claim 5, it is characterized in that, the level attitude of described water outlet is lower than described water-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310130421.1A CN104108786B (en) | 2013-04-16 | 2013-04-16 | A kind of Sewage treatment systems and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310130421.1A CN104108786B (en) | 2013-04-16 | 2013-04-16 | A kind of Sewage treatment systems and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104108786A CN104108786A (en) | 2014-10-22 |
| CN104108786B true CN104108786B (en) | 2015-09-02 |
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| CN201310130421.1A Expired - Fee Related CN104108786B (en) | 2013-04-16 | 2013-04-16 | A kind of Sewage treatment systems and method |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2507858Y (en) * | 2001-10-31 | 2002-08-28 | 李洪旺 | Integral sewage treating device |
| RU2304083C1 (en) * | 2005-10-24 | 2007-08-10 | Алексей Васильевич Друцкий | Apparatus for biological purification of sewage water |
| CN101693582A (en) * | 2009-10-22 | 2010-04-14 | 同济大学 | Simple sewage treatment device of alternate aeration basin and treatment technique thereof |
-
2013
- 2013-04-16 CN CN201310130421.1A patent/CN104108786B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2507858Y (en) * | 2001-10-31 | 2002-08-28 | 李洪旺 | Integral sewage treating device |
| RU2304083C1 (en) * | 2005-10-24 | 2007-08-10 | Алексей Васильевич Друцкий | Apparatus for biological purification of sewage water |
| CN101693582A (en) * | 2009-10-22 | 2010-04-14 | 同济大学 | Simple sewage treatment device of alternate aeration basin and treatment technique thereof |
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| Publication number | Publication date |
|---|---|
| CN104108786A (en) | 2014-10-22 |
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Effective date of registration: 20220623 Address after: 3007, Hengqin international financial center building, No. 58, Huajin street, Hengqin new area, Zhuhai, Guangdong 519031 Patentee after: New founder holdings development Co.,Ltd. Patentee after: SUZHOU SUXIN SPECIAL STEEL Co.,Ltd. Patentee after: JIANGSU SUZHOU STEEL GROUP Co.,Ltd. Address before: 100871, Beijing, Haidian District Cheng Fu Road 298, founder building, 9 floor Patentee before: PEKING UNIVERSITY FOUNDER GROUP Co.,Ltd. Patentee before: SUZHOU SUXIN SPECIAL STEEL Co.,Ltd. Patentee before: JIANGSU SUZHOU STEEL GROUP Co.,Ltd. |
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Granted publication date: 20150902 |