CN105523630A - Activated sludge tank - Google Patents
Activated sludge tank Download PDFInfo
- Publication number
- CN105523630A CN105523630A CN201610061271.7A CN201610061271A CN105523630A CN 105523630 A CN105523630 A CN 105523630A CN 201610061271 A CN201610061271 A CN 201610061271A CN 105523630 A CN105523630 A CN 105523630A
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- Prior art keywords
- precipitation plate
- precipitation
- activated sludge
- settling bath
- sludge tank
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
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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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention relates to the technical field of sewage treatment equipment, in particular to an activated sludge tank. The activated sludge tank comprises a biochemical tank and a precipitation tank arranged in the biochemical tank, wherein the precipitation tank is a V-shaped precipitation tank, the V-shaped precipitation tank comprises multiple layers of inclined precipitation plates, water outlet tanks are arranged in the precipitation tank and communicated with a water outlet pipeline, and the bottom of the precipitation tank is communicated with a recovery pipeline. According to the provided activated sludge tank, with the adoption of the principle of the inclined plate precipitation tank, the precipitation tank is arranged in the activated sludge tank, and the problems of high cost and large occupation space due to adoption of a secondary sedimentation tank in the prior art are solved while effluent meets the effect of the secondary sedimentation tank.
Description
Technical field
The present invention relates to technical field of sewage treatment equipment, particularly relate to a kind of activated sludge tank, relate more specifically to a kind of activated sludge tank of built-in settling bath.
Background technology
Active sludge is the general name of microbial population and their organic substances of depending on and inorganic substance, can be divided into aerobic activated sludge and anaerobic grain active sludge.Active sludge is mainly used to process stain disease, and activated sludge process is a class Aerobic treatment method of the microorganism flco process organic sewage utilizing suspension growth.
Second pond, i.e. secondary sedimentation basins are the important component parts of Sludge System, and its effect mainly makes mud be separated, and mixed solution is clarified, concentrates and returnedactivatedsludge.At present, biochemical treatment system generally all will arrange second pond, and active sludge is precipitated in second pond, and then is back in biochemistry pool by external reflux sludge pump.
This method utilizing second pond process organic sewage, although organic sewage can be processed preferably, and active sludge is recycled, but, construction and the operation cost with the Sludge System of second pond and external reflux sludge pump are all higher, and this Sludge System takes up room larger.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention there is provided a kind of activated sludge tank, adopt Trays Settler on Wastewater Treatment, at the built-in settling bath of activated sludge tank, ensureing that water outlet reaches the effect of second pond simultaneously, the cost that solution prior art adopts second pond to cause is high, take up room large problem.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of activated sludge tank, comprise biochemistry pool and be arranged at the settling bath in described biochemistry pool, described settling bath is V-type settling bath, described V-type settling bath comprises the precipitation plate of the oblique setting of multilayer, the inside of described settling bath is provided with effluent trough, and described effluent trough is communicated with outlet pipeline, is communicated with recycling pipeline bottom described settling bath.
Further, aforementioned precipitation plate comprises the first precipitation plate and the second precipitation plate that are oppositely arranged, and the lower edge of described first precipitation plate and the second precipitation plate is crisscross arranged, and the angle of inclination of described first precipitation plate and the second precipitation plate is symmetrical.
Further, the two ends of aforementioned first precipitation plate and the second precipitation plate are provided with end plate, make described first precipitation plate, the second precipitation plate and end form enclosed construction.
Further, aforementioned first precipitation plate is connected the pool wall of described biochemistry pool respectively with the two ends of the second precipitation plate, makes the pool wall of described first precipitation plate, the second precipitation plate and biochemistry pool form enclosed construction.
Further, aforementioned first precipitation plate and the second precipitation plate support respectively by support, and the lower edge of described first precipitation plate and the second precipitation plate is individually fixed in described support both sides, and described effluent trough is arranged at the top of described support.
Further, be arranged at the upper limb of time outer field described precipitation plate respectively higher than the upper limb of precipitation plate described in other, the elevation of water surface of described biochemistry pool is between described secondary between outer field precipitation plate upper limb and the upper limb being arranged at outer field described precipitation plate.
Further, the height of the both sides upper limb of aforementioned effluent trough respectively higher than the upper limb of described precipitation plate being arranged at internal layer, and lower than being arranged at the upper limb of time outer field described precipitation plate; The upper limb of the described precipitation plate of described internal layer is lower than the water level in described settling bath.
Further, the lower edge being arranged at described second precipitation plate of outer field described precipitation plate is provided with storage mud groove, mud mouth is provided with between described storage mud groove and described first precipitation plate being arranged at outer field described precipitation plate, be provided with perforated sludge discharge pipe in described storage mud groove, described perforated sludge discharge pipe is communicated with described recycling pipeline.
Further, the bottom of the water side of aforementioned biochemistry pool is provided with mixed-liquor return pump, and described mixed-liquor return pump is communicated with return line, and the outlet of described return line is arranged at the water intake end near described biochemistry pool.
Further, the quantity of aforementioned settling bath is more than one or one, and each described settling bath is set in parallel in the water side of described biochemistry pool.
(3) beneficial effect
Technique scheme of the present invention has following beneficial effect:
A kind of activated sludge tank provided by the invention, comprise biochemistry pool and be arranged at the settling bath in biochemistry pool, settling bath is V-type settling bath, V-type settling bath comprises the precipitation plate of the oblique setting of multilayer, the inside of settling bath is provided with effluent trough, effluent trough is communicated with outlet pipeline, is communicated with recycling pipeline bottom settling bath.The structure of this built-in settling bath can replace traditional second pond, can realize active sludge precipitation backflow functionality in biochemistry pool.
A kind of activated sludge tank provided by the invention, because the internal capacity of V-type settling bath is little, therefore the residence time of active sludge and organic sewage is short, while can not reducing biochemical treatment ability, improves the efficiency of purification; And the device of V-type settling bath is simple, without the need to increasing power facility, greatly reduce investment and running cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of activated sludge tank of the present invention;
Fig. 2 is the vertical view of activated sludge tank of the present invention;
Fig. 3 is the sectional view of settling bath in the present invention.
Wherein, 1: biochemistry pool; 2: aeration head; 3: precipitation plate; 4: effluent trough; 5: perforated sludge discharge pipe; 6: mixed-liquor return pump; 7: return line; 8: support; 9: end plate; 10: the first precipitation plates; 11: the second precipitation plates; 12: outlet pipeline; 13: recycling pipeline; 14: suction culvert; 15: storage mud groove.
Embodiment
Below in conjunction with drawings and Examples, embodiments of the present invention are described in further detail.Following examples for illustration of the present invention, but can not be used for limiting the scope of the invention.
In describing the invention, it should be noted that, except as otherwise noted, the implication of " multiple " is two or more; Term " on ", D score, "left", "right", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
Embodiment one
As shown in Figure 1, 2, a kind of activated sludge tank that the present embodiment provides, the settling bath comprising biochemistry pool 1 and be arranged in biochemistry pool 1, settling bath is arranged along the width of biochemistry pool 1, according to treatment scale, the quantity of settling bath can be set to more than one or one, and each settling bath is set in parallel in the water side of biochemistry pool 1.
Settling bath is V-type settling bath, and V-type settling bath comprises the precipitation plate 3 of the oblique setting of multilayer, and according to the water yield, the spacing between two-layer precipitation plate 3 is 10-30cm.The inside of settling bath is provided with effluent trough 4, and effluent trough 4 is arranged along the length direction of settling bath, and effluent trough 4 is communicated to outside biochemistry pool 1 by outlet pipeline 12, is communicated with recycling pipeline 13 bottom settling bath.V-type settling bath adopts sloping plate deposition principle, settling bath volume is significantly reduced, and settling bath is arranged at activated sludge tank inside, namely the structure of biochemistry pool 1 can be simplified, also can ensure that water outlet reaches the outlet effect of second pond, the mud precipitated is slipped in biochemistry pool 1 voluntarily, without the need to external reflux sludge pump and pipeline, reduces the cost of activated sludge tank.In the present embodiment, the residence time of organic sewage in V-type settling bath is 0.5-1h, and in prior art, the treatment time of the structure of second pond to organic sewage is utilized to reach 5h, therefore, compared with prior art, utilize the V-type settling bath structure of the present embodiment to carry out sewage disposal, effectively can save the treatment time of sewage.
As shown in Figure 3, precipitation plate 3 comprises the first precipitation plate 10 and the second precipitation plate 11 be oppositely arranged, the lower edge of the first precipitation plate 10 and the second precipitation plate 11 is crisscross arranged, and the angle of inclination of the first precipitation plate 10 and the second precipitation plate 11 is symmetrical, the gap between the first precipitation plate 10 and the gap between the second precipitation plate 11 form the passage of the mud of precipitation and the supernatant liquor of clarification respectively.
In the present embodiment, the two ends of the first precipitation plate 10 and the second precipitation plate 11 are provided with end plate 9, make the first precipitation plate 10, second precipitation plate 11 and end form enclosed construction.Except the structure of the present embodiment, can also be: the first precipitation plate 10 is connected the pool wall of described biochemistry pool 1 respectively with the two ends of the second precipitation plate 11 make the pool wall of the first precipitation plate 10, second precipitation plate 11 and biochemistry pool 1 form enclosed construction.This structure can prevent the water in biochemistry pool 1 from directly being entered in effluent trough 4 by side.
First precipitation plate 10 and the second precipitation plate 11 support respectively by support 8, and the lower edge of the first precipitation plate 10 and the second precipitation plate 11 is individually fixed in support 8 both sides, and effluent trough 4 is arranged at the top of support 8.In the present embodiment, support 8 is the column that the material such as steel or concrete is made.
In settling bath, be arranged at the upper limb of time outer field precipitation plate 3 respectively higher than the upper limb of other precipitation plates 3, the elevation of water surface of biochemistry pool 1, between secondary outer field precipitation plate 3 upper limb and the upper limb being arranged at outer field precipitation plate 3, makes the space between skin and secondary outer field twice precipitation plate 3 form the water entry of settling bath.
Effluent trough 4 adopts the tank of trilobal(cross)section, the height of the both sides upper limb of effluent trough 4 respectively higher than the upper limb of precipitation plate 3 being arranged at internal layer, and lower than being arranged at the upper limb of time outer field precipitation plate 3; The upper limb of the precipitation plate 3 of internal layer, lower than the water level in settling bath, makes the both sides upper limb of effluent trough 4 a little less than the water level in settling bath, and the water in settling bath is entered effluent trough 4 from the bilateral of effluent trough 4.
The lower edge being arranged at the second precipitation plate 11 of outer field precipitation plate 3 stretches out support 8 and upper volume, form storage mud groove 15, mud mouth is provided with between storage mud groove 15 and the first precipitation plate 10 being arranged at outer field precipitation plate 3, perforated sludge discharge pipe 5 is provided with in storage mud groove 15, perforated sludge discharge pipe 5 is communicated with recycling pipeline 13, for discharging excess sludge.
The water intake end top of biochemistry pool 1 connects suction culvert 14, the bottom of the water side of biochemistry pool 1 is provided with mixed-liquor return pump 6, mixed-liquor return pump 6 is communicated with return line 7, the outlet of return line 7 is arranged at the water intake end near biochemistry pool 1, for by the sludge reflux in precipitation zone to biochemistry pool 1 front end, by mixed-liquor return higher for the sludge concentration of bottom, settling region to biochemical zone head end, on the one hand in conjunction with the set-up mode of AAO Sludge System, play the effect of denitrogenation dephosphorizing, reduce biochemistry pool 1 end sludge concentration on the one hand.
Water in biochemistry pool 1 is mixed solution, aeration head 2 is provided with bottom biochemistry pool 1, in operational process, mixed solution enters settling bath by water entry, mud in mixed solution precipitates between precipitation plate 3, and when mixed solution flow to by support 8 position, the supernatant liquor that proportion is lighter is precipitated further by the region upwards entered comparatively between one deck precipitation plate in precipitation plate gap, the heavier mud of proportion then flows into downwards in the storage mud groove 15 of below, and the fluidised form in each layer precipitation plate 3 is all advanced by above-mentioned steps.Storage mud groove 15 is by perforated sludge discharge pipe 5, recycling pipeline 13, and got rid of outside pond by some residual mud, other most of mud are by storing up the landing of mud groove 15 upper limb in biochemistry pool 1.The mixed solution entering region between innermost layer precipitation plate continues precipitation clarification on internal layer precipitation plate, and the water after clarification then enters in effluent trough 4, is collected outside rear discharge biochemistry pool 1 by outlet pipeline 12.Settling bath internal stops set of time, at 0.5-1h, because the spacing between precipitation plate is very little, therefore while meeting service requirements, can carry out High-rate sedimentation at short notice.
During use, precipitation plate 3 can according to service condition be set to two-layer more than, wherein the upper limb of internal layer precipitation plate 3 is lower than the water level in settling bath, with ensure mixed solution through between two-layer precipitation plate 3 precipitation after enter effluent trough 4 again.
Because biochemistry pool 1 water is moved to settling bath region by feed-water end, if do not take special measure to make the sludge quantity in settling bath region too concentrated, cause the sludge quantity of feed-water end to reduce, thus mixed-liquor return pump 6 is set, the mixed solution in this region is refluxed to feed-water end.
When the present embodiment is applied to the Sewage Plant of 80,000 tons/day, biochemistry pool 1 eight is set.The long 50m of monomer of biochemistry pool 1, wide 20m, dark 6m, monomer processing power 0.5 ten thousand tons/day.The settling bath of four long 20m is established in water side, every pond, the width (outer precipitation plate 3 upper limb spacing) of each settling bath is 1.5m, highly (outer precipitation plate lower edge is apart from water surface distance) is 1.6m, if six layers of precipitation plate 3, the spacing of two-layer precipitation plate 3 is 25cm, and separation (the outer precipitation plate 3 upper limb spacing of two settling baths) is 1m.The cubic capacity of single settling bath is 25m
3, cubic capacity is 100m
3, mixed solution mean residence time in device is 0.5h, and settling region total width is 10m, arranges mixed-liquor return pump 6 two, can well meet the processing demands of this Sewage Plant, and reduces investment and the running cost of this Sewage Plant.
Embodiment two
The structural similitude of the present embodiment and embodiment one, principle is identical, and it is distinguished as: present embodiments provide a kind of 50m
3the activated sludge tank of/h, pond body length and width are respectively 10m, dark 5m, and pond body adopts the operation scheme of bottom in and top out.Establish three settling baths at pond upper surface, flute length 10m, groove width and groove is high is 1.8m, if six layers of precipitation plate 3, the spacing of two-layer precipitation plate 3 is 30cm, and separation 1m, settling bath always accounts for wide 8m.Due to the complete hybrid biochemistry pool 1 that this pond is bottom in and top out, therefore not containing mixed-liquor return pump 6.Device mean residence time 0.5h.
Embodiments of the invention provide in order to example with for the purpose of describing, and are not exhaustively or limit the invention to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for specific end use.
Claims (10)
1. an activated sludge tank, it is characterized in that, comprise biochemistry pool and be arranged at the settling bath in described biochemistry pool, described settling bath is V-type settling bath, described V-type settling bath comprises the precipitation plate of the oblique setting of multilayer, the inside of described settling bath is provided with effluent trough, and described effluent trough is communicated with outlet pipeline, is communicated with recycling pipeline bottom described settling bath.
2. activated sludge tank according to claim 1, it is characterized in that, described precipitation plate comprises the first precipitation plate and the second precipitation plate that are oppositely arranged, and the lower edge of described first precipitation plate and the second precipitation plate is crisscross arranged, and the angle of inclination of described first precipitation plate and the second precipitation plate is symmetrical.
3. activated sludge tank according to claim 2, is characterized in that, the two ends of described first precipitation plate and the second precipitation plate are provided with end plate, makes described first precipitation plate, the second precipitation plate and end form enclosed construction.
4. activated sludge tank according to claim 2, is characterized in that, described first precipitation plate is connected the pool wall of described biochemistry pool respectively with the two ends of the second precipitation plate, makes the pool wall of described first precipitation plate, the second precipitation plate and biochemistry pool form enclosed construction.
5. activated sludge tank according to claim 2, it is characterized in that, described first precipitation plate and the second precipitation plate support respectively by support, and the lower edge of described first precipitation plate and the second precipitation plate is individually fixed in described support both sides, and described effluent trough is arranged at the top of described support.
6. activated sludge tank according to claim 5, it is characterized in that, be arranged at the upper limb of time outer field described precipitation plate respectively higher than the upper limb of precipitation plate described in other, the elevation of water surface of described biochemistry pool is between described secondary between outer field precipitation plate upper limb and the upper limb being arranged at outer field described precipitation plate.
7. activated sludge tank according to claim 6, is characterized in that, the height of the both sides upper limb of described effluent trough respectively higher than the upper limb of described precipitation plate being arranged at internal layer, and lower than being arranged at the upper limb of time outer field described precipitation plate; The upper limb of the described precipitation plate of described internal layer is lower than the water level in described settling bath.
8. activated sludge tank according to claim 7, it is characterized in that, the lower edge being arranged at described second precipitation plate of outer field described precipitation plate is provided with storage mud groove, mud mouth is provided with between described storage mud groove and described first precipitation plate being arranged at outer field described precipitation plate, be provided with perforated sludge discharge pipe in described storage mud groove, described perforated sludge discharge pipe is communicated with described recycling pipeline.
9. activated sludge tank according to claim 8, it is characterized in that, the bottom of the water side of described biochemistry pool is provided with mixed-liquor return pump, and described mixed-liquor return pump is communicated with return line, and the outlet of described return line is arranged at the water intake end near described biochemistry pool.
10. the activated sludge tank according to any one of claim 1-9, is characterized in that, the quantity of described settling bath is more than one or one, and each described settling bath is set in parallel in the water side of described biochemistry pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610061271.7A CN105523630B (en) | 2016-01-28 | 2016-01-28 | Activated sludge pond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610061271.7A CN105523630B (en) | 2016-01-28 | 2016-01-28 | Activated sludge pond |
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| Publication Number | Publication Date |
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| CN105523630A true CN105523630A (en) | 2016-04-27 |
| CN105523630B CN105523630B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610061271.7A Active CN105523630B (en) | 2016-01-28 | 2016-01-28 | Activated sludge pond |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000117005A (en) * | 1998-10-09 | 2000-04-25 | Japan Organo Co Ltd | Flocculating and settling method and device |
| EP1072559A2 (en) * | 1999-07-26 | 2001-01-31 | INGERLE, Kurt | Device for wastewater purification |
| CN203598540U (en) * | 2013-10-31 | 2014-05-21 | 南京源泉环保科技股份有限公司 | Vertical flow sedimentation tank |
| CN204607683U (en) * | 2015-05-14 | 2015-09-02 | 成都绿源新创环保科技有限公司 | A kind of integrated sewage treatment device |
| CN205556218U (en) * | 2016-01-28 | 2016-09-07 | 浦华环保股份有限公司 | Activated sludge |
-
2016
- 2016-01-28 CN CN201610061271.7A patent/CN105523630B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000117005A (en) * | 1998-10-09 | 2000-04-25 | Japan Organo Co Ltd | Flocculating and settling method and device |
| EP1072559A2 (en) * | 1999-07-26 | 2001-01-31 | INGERLE, Kurt | Device for wastewater purification |
| CN203598540U (en) * | 2013-10-31 | 2014-05-21 | 南京源泉环保科技股份有限公司 | Vertical flow sedimentation tank |
| CN204607683U (en) * | 2015-05-14 | 2015-09-02 | 成都绿源新创环保科技有限公司 | A kind of integrated sewage treatment device |
| CN205556218U (en) * | 2016-01-28 | 2016-09-07 | 浦华环保股份有限公司 | Activated sludge |
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| Publication number | Publication date |
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| CN105523630B (en) | 2023-09-19 |
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