CN102126785B - Device for sorting sludge with high sedimentation performance by activated sludge process and process - Google Patents
Device for sorting sludge with high sedimentation performance by activated sludge process and process Download PDFInfo
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- CN102126785B CN102126785B CN201110022565A CN201110022565A CN102126785B CN 102126785 B CN102126785 B CN 102126785B CN 201110022565 A CN201110022565 A CN 201110022565A CN 201110022565 A CN201110022565 A CN 201110022565A CN 102126785 B CN102126785 B CN 102126785B
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- cylinder
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- 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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Abstract
The invention discloses a device for sorting sludge with high sedimentation performance by an activated sludge process, which is provided with an upper cylinder body, wherein a funnel-shaped sludge sedimentation cylinder is connected to the lower side of the upper cylinder; a sludge storage cylinder is arranged at the bottom of the sedimentation cylinder; a lower cylinder body is also arranged below the upper cylinder body and the sedimentation cylinder, and the edge of an upper opening of the lower cylinder body is hermetically connected with the outer side of the cylinder wall on the upper part of the sedimentation cylinder; the lower cylinder body is communicated with inner cavities of the sedimentation cylinder and the upper cylinder body by a plurality of diversion cylinders arrangedon the cylinder wall of the sedimentation cylinder; and the lower cylinder body is communicated with a water outlet of a biological reaction tank and a water inlet of a secondary sedimentation tank, and is provided with a flowmeter, and the bottom of the sludge storage cylinder is communicated with a sludge disposal pipe. A process comprises the following steps of: 1) measuring the staying time of residual mixed liquor in the sorting device; 2) opening the device to run; and 3) adjusting the water yield of the lower cylinder body by utilizing a water valve. The device is suitable for sorting the sludge by the activated sludge process, has a perfect structure and good effect, and is easy and convenient to operate.
Description
Technical field
The invention belongs to the activated sludge process sewage disposal technology of sewage work; Specifically be in sewage disposal device and the technology; Sub-elect the active sludge of high settling property according to sludge settling property; The mud of getting rid of the settling property difference, thus the sludge treatment load of equipment and the device and the technology of processing efficiency improved.
Background technology
At present, traditional waste water treatment process exist to be handled the restriction that load receives sludge settling property, makes in the biological reaction tank sludge concentration not high, handles the problem that load can not further improve.At present, activated sludge process is often through in the aeration tank, increasing filler or adopting membrane bioreactor to carry out mud-water separation, to improve sludge concentration.But these measures have increased investment and running cost greatly.Therefore, need do further improvement,, further improve the load of WWT, and reduce investment and running cost, satisfy needs of society better to improve the sludge concentration in the biological reaction tank to the traditional activated sludge process treatment process.
Summary of the invention
Technical problem to the existence of traditional activated sludge process treatment process; The purpose of this invention is to provide a kind of activated sludge process sludge settling property sorting unit and technology; This device is arranged in the middle of the biological reaction tank and second pond of traditional activated sludge process sewage disposal device; The front is communicated with the water outlet of biological reaction tank, and the back is communicated with the water-in of second pond, between second pond and biological reaction tank, is provided with traditional sludge return pipe and sludge pump.This device and technology are through reasonably controlling the mixed liquor upflow velocity of sewage and returned sludge; Can be based on settling property sorting activated sludge; Keep the good activated sludge of settling property; Get rid of the relatively poor activated sludge of settling property; Thereby the settling property of mud in the raising active sludge treatment process, the active sludge intermixture of formation high concentration; The saving Sewage Plant is taken up an area of, and improves and handles load, reduces investment and operating cost.
The objective of the invention is to realize through following technical scheme:
The high settling property mud of activated sludge process of the present invention sorting unit is characterized in that: be provided with a upper shell, be provided with effluent weir in the upper periphery of this cylindrical shell, this effluent weir is communicated with second pond; At the upper brim of the end opening edge of upper shell and a funnel shaped sludge settling tube along airtight the connection; The obliquity of deposition barrel is 45～75 degree; Upper shell is communicated with deposition tube two tube inner chambers; The bottom of this deposition tube is provided with a storage mud tube, mouthful airtight connection the under the tube of the suitable for reading and deposition tube of this storage mud tube, the bottom seals of storage mud tube; Below said upper shell and deposition tube, also be provided with a lower shell; The diameter of this lower shell is less than upper shell; Its upper brim edge and top barrel airtight connection of the outside of precipitating tube; The bottom seals of this lower shell, its inner chamber is communicated with the inner chamber of deposition tube and upper shell through several guide shells that are located on the deposition tube barrel; The water outlet of the biological reaction tank in the lower front side of lower shell and the sludge treatment device is communicated with, and water-in is provided with preceding under meter, and rear side is communicated with the water-in of second pond, is provided with by-pass valve control and back under meter with the connecting pipe of second pond; The shore pipe that is communicated with sludge pump that is provided with discharging mud leads to the outside from said storage mud tube bottom; Said upper shell constitutes the precipitation constituency with the deposition tube, and lower shell constitutes sedimentation and divides the constituency.
The shape of cross section of said upper shell, deposition tube and lower shell is consistent with each other, is circle or Polygons.
The guide shell that is provided with on the said deposition barrel is 4.
The mud that the sewage of biological reaction tank and second pond reflux constitutes mixed solution, and this mixed solution gets into active sludge sorting unit of the present invention by the biological reaction tank bottom, and a part of mixed solution directly gets into second pond by the connecting pipe that connects second pond; Residual mixed liquor is to continue to rise in sedimentation branch constituency in lower shell, and the active sludge rapid subsidence that settling property is good in sedimentation branch constituency drops to the bottom in sedimentation branch constituency, and gets into second pond through the connecting pipe that connects second pond; The active sludge that settling property is relatively poor along with residual mixed liquor gets into upper shell and the precipitation constituency that the deposition tube constitutes by guide shell, in the precipitation constituency, carries out mud-water separation.The relatively poor sludge settling of settling property that gets into the precipitation constituency is precipitating on the barrel, and gets into storage mud tube along the barrel that tilts.Clarified solution in the upper shell gets into second pond by the effluent weir on top and the connecting pipe of second pond; Mud in the storage mud tube is discharged by discharge pipeline.In the mixed solution that gets into second pond, keep the good mud of settling property like this, and got rid of the relatively poor mud of settleability.
The technology of the high settling property mud of activated sludge process of the present invention sorting: its characteristic may further comprise the steps:
1) carry out the sludge settling velocity test that water mixed liquid of biological reaction tank before the opening device, confirm the time that said residual mixed liquor stops according to the settling velocity of measuring in sorting unit, definite standard is:
If: the residual mixed liquor residence time is T, unit: hour,
The sludge settling speed of mixed solution is θ, unit: m/h,
The height of sorting unit is H, and unit is: m,
Then:
T=(0.7～1.1) * H/ θ, unit: hour;
2) behind the opening device; The time that in sorting unit, stops according to the volume of the flooding velocity of the sorting unit of biological reaction tank water outlet under meter indication, sorting unit and residual mixed liquor that test is confirmed; Calculate the flow that lower shell feeds the outlet conduit of second pond, and the water flow of lower shell is adjusted; Method of calculation are:
If: the residual mixed liquor residence time is T, unit: hour,
The lower shell flooding velocity is Q
1, unit: m
3/ h,
The water flow of lower shell is Q
2, unit: m
3/ h,
The volume of sorting unit is V, and unit is: m
3,
Then:
Q
2=Q
1-V/T, unit: m
3/ h;
3) sorting unit normally moves; Based on ruuning situation the water yield of lower shell is adjusted in good time in the running; The standard of adjustment is: through accelerating or the water yield that slows down, the time that minimizing or increase residual mixed liquor stop in sorting unit, make the water outlet of upper shell be standard more clearly.
The major advantage of device of the present invention and process modification:
(1) apparatus of the present invention are according to the active sludge of the different settling properties of settling property sorting.Traditional activated sludge process carries out disposable mud-water separation in second pond, be difficult to distinguish the active sludge of different settling properties, but precipitates whole active sludge, and refluxes or discharge.This device utilizes active sludge on settling property, to have the fact of difference; Utilize the sedimentation branch constituency of this device; The mud good settling property gets into the second pond and the biological reaction tank that refluxes; And carry out the precipitation constituency of the mud of settling property difference in this device mud-water separation and give off outside the system, thereby make the mud in the entire treatment system keep good settling property.Higher sludge settling property has been created necessary precondition for improving the sludge concentration in the biological reaction tank, increase to handle to load.
(2) upflow velocity in precipitation constituency generally was controlled at 1～10m/ hour in the working method of the present invention, and the residence time was controlled at 0.5～2 hour; The upflow velocity in sedimentation branch constituency was controlled at 2～20m/ hour, and the residence time was controlled at 0.5～2 hour; Therefore, can effectively distinguish the mud of different settling properties as required.
(3) apparatus of the present invention are directly discharged the storage mud district of excess sludge from the mud sorting unit, have guaranteed that the relatively poor active sludge of settling property that sub-elects can in time discharge system, no longer get into system.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram that sorting unit of the present invention is provided with in the traditional activated sludge process sewage disposal device;
Fig. 2 is the A-A view among Fig. 1.
The profile of apparatus of the present invention does not receive the restriction of this figure, and only the profile change also belongs to protection scope of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further explanation:
The high settling property mud of activated sludge process sorting unit is provided with a upper shell 21, is provided with effluent weir 211 in the upper periphery of this cylindrical shell, and this effluent weir is communicated with second pond; At the upper brim of the end opening edge of upper shell and a funnel shaped sludge settling tube 22 along airtight the connection; The obliquity of deposition barrel is 55 degree; Upper shell is communicated with deposition tube two tube inner chambers; The bottom of this deposition tube is provided with a storage mud tube 222, mouthful airtight connection the under the tube of the suitable for reading and deposition tube of this storage mud tube, the bottom seals of storage mud tube; Below said upper shell and deposition tube, also be provided with a lower shell 23; The diameter of this lower shell is less than upper shell; Its upper brim edge and top barrel airtight connection of the outside of precipitating tube; The bottom seals of this lower shell, its inner chamber is communicated with the inner chamber of deposition tube and upper shell through several guide shells 221 that are located on the deposition tube barrel; The water outlet of the biological reaction tank 1 in the lower front side of lower shell and the sludge treatment device is communicated with; Water-in is provided with preceding under meter 6; The water-in of the second pond 3 in rear side and the sludge treatment device is communicated with, and is provided with by-pass valve control 5 and back under meter 4 with the connecting pipe of second pond; The shore pipe that is communicated with sludge pump that is provided with discharging mud leads to the outside from said storage mud tube bottom; Said upper shell constitutes the precipitation constituency with the deposition tube, and lower shell constitutes sedimentation and divides the constituency; The shape of cross section of said upper shell, deposition tube and lower shell is consistent with each other, is circle or Polygons.
Above-mentioned mud sorting unit carries out the technology of mud sorting: carry out according to the following steps:
1) water outlet of carrying out biological reaction tank is the settling velocity test of mixed solution, confirms that according to the settling velocity of measuring the time that said residual mixed liquor stops is 2 hours in sorting unit;
2) opening device operation; The time that in sorting unit, stops according to the volume of the flooding velocity of the sorting unit of biological reaction tank water outlet under meter indication, sorting unit and residual mixed liquor that test is confirmed; Calculate the flow that lower shell feeds the outlet conduit of second pond; And utilizing flowing water Valve that the water flow of lower shell is adjusted, flow is 100m
3
3) sorting unit normally moves; Based on ruuning situation the water yield of lower shell is adjusted in good time in the running; The standard of adjustment is: through accelerating or the water yield that slows down, the time that minimizing or increase residual mixed liquor stop in sorting unit, make the water outlet of upper shell be standard more clearly.
The invention effect: after adopting this mud sorting unit, its sludge settling speed reaches more than the 6m/h, improves more than 50% than traditional active sludge treatment process.Returned sluge concentration reaches more than the 10000mg/L, and adopt and the same return sludge ratio of traditional activated sludge process: 40%～120% o'clock, the aeration tank sludge concentration can reach more than the 6000mg/L, saves than conventional activated sludge process and takes up an area of more than 30%.
Claims (2)
1. the high settling property mud of activated sludge process sorting unit is characterized in that: be provided with a upper shell (21), be provided with effluent weir (211) in the upper periphery of this cylindrical shell, this effluent weir is communicated with second pond; At the upper brim of the end opening edge of upper shell and a funnel shaped sludge settling tube (22) along airtight the connection; The obliquity of deposition barrel is 45～75 degree; Upper shell is communicated with deposition tube two tube inner chambers; The bottom of this deposition tube is provided with a storage mud tube (222), mouthful airtight connection the under the tube of the suitable for reading and deposition tube of this storage mud tube, the bottom seals of storage mud tube; Below said upper shell and deposition tube, also be provided with a lower shell (23); The diameter of this lower shell is less than upper shell; Its upper brim edge and top barrel airtight connection of the outside of precipitating tube; The bottom seals of this lower shell, its inner chamber is communicated with the inner chamber of deposition tube and upper shell through several guide shells (221) that are located on the deposition tube barrel; The water outlet of the biological reaction tank (1) in the lower front side of lower shell and the sludge treatment device is communicated with; Water-in is provided with preceding under meter (6); The water-in of the second pond (3) in rear side and the sludge treatment device is communicated with, and is provided with by-pass valve control (5) and back under meter (4) with the connecting pipe of second pond; The shore pipe that is communicated with sludge pump that is provided with discharging mud leads to the outside from said storage mud tube bottom; Said upper shell constitutes the precipitation constituency with the deposition tube, and lower shell constitutes sedimentation and divides the constituency; The shape of cross section of said upper shell, deposition tube and lower shell is consistent with each other, is circle or Polygons.
2. mud sorting unit according to claim 1 carries out the technology of mud sorting: its characteristic may further comprise the steps:
1) water outlet of carrying out biological reaction tank is the settling velocity test of mixed solution, confirms the time that said residual mixed liquor stops according to the settling velocity of measuring in sorting unit, and definite standard is:
If: the residual mixed liquor residence time is T, unit: hour,
The sludge settling speed of mixed solution is
unit: m/h
The height of sorting unit is H, and unit is: m,
Then:
T=(0.7～1.1) * H/ θ, unit: hour;
2) opening device operation; The time that in sorting unit, stops according to the volume of the flooding velocity of the sorting unit of biological reaction tank water outlet under meter indication, sorting unit and residual mixed liquor that test is confirmed; Calculate the flow that lower shell feeds the outlet conduit of second pond, and utilize flowing water Valve that the water flow of lower shell is adjusted; Method of calculation are:
If: the residual mixed liquor residence time is T, unit: hour,
The lower shell flooding velocity is Q
1, unit: m
3/ h,
The water flow of lower shell is Q
2, unit: m
3/ h,
The volume of sorting unit is V, and unit is: m
3,
Then:
Q
2=Q
1-V/T, unit: m
3/ h;
3) sorting unit normally moves; Based on ruuning situation the water yield of lower shell is adjusted in good time in the running; The standard of adjustment is: through accelerating or the water yield that slows down, the time that minimizing or increase residual mixed liquor stop in sorting unit, make the water outlet of upper shell be standard more clearly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110022565A CN102126785B (en) | 2011-01-20 | 2011-01-20 | Device for sorting sludge with high sedimentation performance by activated sludge process and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110022565A CN102126785B (en) | 2011-01-20 | 2011-01-20 | Device for sorting sludge with high sedimentation performance by activated sludge process and process |
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| Publication Number | Publication Date |
|---|---|
| CN102126785A CN102126785A (en) | 2011-07-20 |
| CN102126785B true CN102126785B (en) | 2012-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110022565A Active CN102126785B (en) | 2011-01-20 | 2011-01-20 | Device for sorting sludge with high sedimentation performance by activated sludge process and process |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2015286B1 (en) * | 2015-08-10 | 2017-02-28 | Haskoningdhv Nederland Bv | Continuous process for the treatment of wastewater. |
| CN106396271B (en) * | 2016-10-27 | 2019-03-15 | 环境保护部华南环境科学研究所 | A method of improving activated sludge settling property |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201245507Y (en) * | 2008-08-11 | 2009-05-27 | 嘉兴市环科环境工程有限公司 | Sludge recovery system for water treatment |
| CN202036825U (en) * | 2011-01-20 | 2011-11-16 | 北京城市排水集团有限责任公司 | High-sedimentation performance sludge separating device for activated sludge process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ278659B6 (en) * | 1991-04-18 | 1994-04-13 | Covspol Sro | Apparatus for separating biological sludge from purified water |
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2011
- 2011-01-20 CN CN201110022565A patent/CN102126785B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201245507Y (en) * | 2008-08-11 | 2009-05-27 | 嘉兴市环科环境工程有限公司 | Sludge recovery system for water treatment |
| CN202036825U (en) * | 2011-01-20 | 2011-11-16 | 北京城市排水集团有限责任公司 | High-sedimentation performance sludge separating device for activated sludge process |
Non-Patent Citations (1)
| Title |
|---|
| 张国宁等.混合液污泥浓度与污泥回流系统控制策略研究.《给水排水》.2008,第34卷(第9期), * |
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