CN102701530B - Double-circulation anaerobic reaction device - Google Patents
Double-circulation anaerobic reaction device Download PDFInfo
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- CN102701530B CN102701530B CN201210204852.3A CN201210204852A CN102701530B CN 102701530 B CN102701530 B CN 102701530B CN 201210204852 A CN201210204852 A CN 201210204852A CN 102701530 B CN102701530 B CN 102701530B
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 239000004744 fabric Substances 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 6
- 238000013022 venting Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 238000005352 clarification Methods 0.000 claims description 3
- 239000010802 sludge Substances 0.000 abstract description 18
- 239000010865 sewage Substances 0.000 abstract description 14
- 239000008187 granular material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The invention discloses a double-circulation anaerobic reaction device which comprises a tank body, wherein the tank body is internally provided with a water distribution area, a first-level three-phase separator, a second-level three-phase separator and a gas-liquid separator in sequence from bottom to top, and an external circulation system is arranged additionally. A settling tank arranged in a water outlet tank of the second-level three-phase separator is used for collecting granulated sludge which is not separated thoroughly and sending the granulated sludge back to the water distribution area at the lower part of the tank body, and therefore sewage is treated more thoroughly and the granulated sludge is prevented from being lost; and in addition, when the anaerobic reaction device is impacted, the current rise speed in the anaerobic reaction device can be adjusted to maintain the quantity of anaerobic microbes so that the anaerobic reaction device can operate stably.
Description
Technical field
The present invention relates to a kind of anaerobic reaction device for sewage disposal.
Background technology
Anaerobic reaction device is key device in Sewage treatment systems, and its underpart is provided with water distribution system, waste water can be assigned to equably to the bottom of whole reactor and carry out hydraulic mixing; Water distribution system top is reaction zone, and reaction zone is the main place that the reaction of reactor mesophytization occurs, and is divided into again Sludge Bed district and sludge suspension district, and Sludge Bed district wherein has mainly concentrated most of highly active granule sludge, is organic main degraded place; Sludge suspension district is the concentrated region of floc sludge.Top, reaction zone is two-stage triphase separator, in order to separation gas, water and mud granule.Derive at gas autoreactor top; The automatic landing of mud granule is settled down to the Sludge Bed of reactor bottom; Water is from settling section water outlet.
Existing anaerobic reaction device there is internal circulation system, sewage enters reaction zone by water distribution system, evenly mixes with the anaerobic grain sludge in reaction zone.In sewage, contained most of organism is converted into biogas and rises in reactor; When biogas rises, also the mixed solution in reaction zone is promoted to the gas-liquid separator that is located at reactor head, the biogas being separated is drained by the air outlet at gas-liquid separator top.Isolated muddy water mixed solution will be got back to the bottom of reaction zone along return line, and fully mixes in granule sludge and the water inlet of bottom.Because three-way separator separation can't be very thorough, so often there will be " race mud " phenomenon, unsegregated anaerobic grain sludge can be discharged reactor with water.As everyone knows, anaerobic reactor requires its normal start-up and operation of granular sledge guarantee that seed sludge activity is high, settling property is good.And the passage of anaerobic grain sludge, the very large difficulty of bringing for debugging and the operation at reactor initial stage; After the normal operation of reactor, muddy water mixed solution separates halfway problem and also still exists, and the direct discharge of such sewage still can pollute.
Summary of the invention
For the technical problem of above-mentioned existence, the invention provides a kind of double-cycling anaerobic reaction unit, can separate more thoroughly sewage and avoid the loss of granular sledge.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of double-cycling anaerobic reaction unit, comprises tank body; In described tank body, be disposed with from the bottom to top cloth pool, one-level triphase separator, secondary triphase separator, gas-liquid separator; Also comprise water distribution system, described water distribution system comprises some water distribution units; Described water distribution unit is installed on tank body lower part cloth pool, comprise extend into the water inlet pipe of tank interior, for controlling the valve of water inlet pipe; The part that described water inlet pipe extends into tank body is provided with some water jets; Water distribution system also comprises riser tube and return line; Described riser tube upper end communicates with the gas-liquid separator that is positioned at tank body top, and lower end communicates with the collection chamber of triphase separator; Described return line upper end communicates with the gas-liquid separator that is positioned at tank body top, and Yu Bu pool, lower end communicates; Described water distribution system also comprises external circulating system; Described external circulating system comprises some setting tanks that are arranged in effluent trough; Described setting tank is connected mutually, and communicates with overflow groove; On overflow groove, be provided with the rising pipe of the liquid of clarification being discharged to tank body; Described external circulating system also comprises outer circulation pipeline; Described outer circulation pipeline upper end communicates with setting tank lower end, and Yu Bu pool, outer circulation pipeline lower end communicates.
There is the anaerobic reaction device of said structure, increased an external circulating system.The setting tank collection that utilization is arranged in secondary triphase separator effluent trough does not separate granular sledge thoroughly, and these granular sledges is sent back to the cloth pool of tank body lower part.Can make like this sewage disposal more thorough, can avoid again the loss of granular sledge.And can make anaerobism in the time being subject to impacting, regulate the up-flow speed of anaerobism inside, keep anaerobion amount, make anaerobic device reach the effect of steady running.
Improve as one, on described outer circulation pipeline, be provided with valve, can control separately external circulating system.
Improve as one, described triphase separator comprises the spaced flap of some layers, for collecting the collection chamber of biogas, is vertically provided with cutoff board along the top of described flap.Make ascending current directional stream-guidance, waterflow stabilization, evenly rises, and has avoided the collision of current and the race mud phenomenon that produces.
Further improve as above-mentioned improvement, be vertically provided with baffle plate along described flap lower end.Prevent that sludge granules from being taken away by ascending current, be conducive to the precipitation of mud.
Improve as one, described gas-liquid separator comprises cylindrical shell, the fluid inlet communicating with riser tube, the liquid outlet communicating with return line, for the orifice plate of gas-liquid separation; Described cylinder top is provided with venting port; Liquid outlet is arranged on cylinder body bottom; In cylindrical shell, be positioned at and on fluid inlet, be horizontally disposed with abacus, obliquely in cylindrical shell be provided with some dividing plates; Described dividing plate is positioned on orifice plate; Dividing plate is provided with the gap of passing through for biogas.The dividing plate of oblique setting is conducive to flow back to cylinder body bottom after steam coagulation.
Further improve as above-mentioned improvement, described dividing plate is venetian blind type; Dividing plate is from top to bottom arranged, and adjacent separator direction is relatively staggered.Not only have the function that multilayer separates, separating effect is better, and the baffle design of venetian blind type, in guaranteeing that biogas passes through, is more conducive to condensing of water vapour.
Improve as one, described water distribution unit is 3, and from top to bottom arranges successively; The water jet of all water distribution units is arranged in same plane.Three layers of water distribution unit can be convenient the more water jet of increase, increase injection dynamics, make sewage fermentation more abundant.
Improve as one, the water inlet pipe of described water distribution unit derives 4 water inlet pipe branches, extends into respectively 4 different regions in the same plane of cloth pool; Described gas-liquid separator is 4, and 4 different zones that the return line that each gas-liquid separator connects marks off with water inlet pipe branch respectively communicate; In each water inlet pipe branch, be respectively arranged with valve.Water distribution unit is divided into 4 parts in same plane, can, according to reaction fermentation situations different in tank body, controls respectively, carry out regional water distribution.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is intended to for secondary triphase separator in invention shows structure.
Fig. 3 is secondary triphase separator vertical section schematic diagram in the present invention.
Fig. 4 is water distribution unit schematic diagram in the present invention.
Fig. 5 is the structural representation of triphase separator flap in the present invention.
Fig. 6 is the structural representation of gas-liquid separator in the present invention.
in figuremark: 1 tank body, 2 water inlet pipe branches, 3 valves, 4 water jets, 5 water inlet pipes, 6 water distribution units, 7 one-level triphase separators, 8 collection chambers, 9 valves, 10 return lines, 11 riser tubes, 12 gas collection holes, 13 gas-liquid separators, 14 secondary triphase separators, 15 effluent troughs, 16 overflow grooves, 17 setting tanks, 18 rising pipes, 19 outer circulation pipelines, 20 valves, 21 cloth pools, 22 flaps, 131 cylindrical shells, 132 fluid inlets, 133 venting ports, 134 orifice plates, 135 dividing plates, 136 liquid outlets, 221 guide faces, 222 cutoff boards, 223 baffle plates.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, 2, 3:
The present invention includes tank body 1; In described tank body, be disposed with from the bottom to top cloth pool 21, one-level triphase separator 7, secondary triphase separator 14, gas-liquid separator 13; Also comprise water distribution system, described water distribution system comprises some water distribution units 6; Described water distribution unit 6 is installed on tank body 1 cloth pool, bottom 21, comprise extend into the water inlet pipe 5 of tank body 1 inside, for controlling the valve 9 of water inlet pipe 5; The part that described water inlet pipe 5 extends into tank body 1 is provided with some water jets 4; Water distribution system also comprises riser tube 11 and return line 10; Described riser tube 11 upper ends communicate with the gas-liquid separator 13 that is positioned at tank body 1 top, lower end and the collection chamber 8 of one-level triphase separator 7 and communicating of secondary three-way separator 14 collection chambers 8; Described return line 10 upper ends communicate with the gas-liquid separator 13 that is positioned at tank body 1 top, and Yu Bu pool, lower end 21 communicates; Described water distribution system also comprises external circulating system; Described external circulating system comprises some setting tanks 17 that are arranged in effluent trough 15; Described setting tank 17 is connected mutually, and communicates with overflow groove 16; On overflow groove 16, be provided with the rising pipe 18 of the liquid of clarification being discharged to tank body 1; Described external circulating system also comprises outer circulation pipeline 19; Described outer circulation pipeline 19 upper ends communicate with setting tank 17 lower ends, and outer circulation pipeline 19 Yu Bu pools, lower end 21 communicate.On outer circulation pipeline, valve 20 can be set.
As shown in Fig. 2,3,5:
Triphase separator comprises some spaced flaps 22, for collecting the collection chamber 8 of biogas, be vertically provided with cutoff board 222 along the top of described flap 22, be vertically provided with baffle plate 223 along flap 22 lower ends.The difference of one-level triphase separator 7 and secondary triphase separator 14 is: the effluent trough 15 that secondary triphase separator 14 tops are provided with overflow groove 16 and communicate with overflow groove 16.Stir the granular sledge getting up and stopped by flap 22 bottoms, start precipitation; The bubble (main component is biogas) that water and stirring produce rises along guide face 221, while arriving flap 22 top, due to the existence of cutoff board 222, the current on both sides can not be collided, evenly rise, through separating layer by layer, sludge granules precipitation, gas are collected by collection chamber 8 by gas collection hole 12.
As shown in Figure 6:
Gas-liquid separator 13 comprises cylindrical shell 131, the fluid inlet 132 communicating with riser tube 11, the liquid outlet 136 communicating with return line 10, for the orifice plate 134 of gas-liquid separation; Described cylindrical shell 131 tops are provided with venting port 133; Liquid outlet 136 is arranged on cylindrical shell 131 bottoms; In cylindrical shell 131, be positioned at and on fluid inlet 132, be horizontally disposed with abacus 134, the interior oblique some dividing plates 135 that are provided with of cylindrical shell 131; Described dividing plate 135 is positioned on orifice plate 134; Dividing plate 135 is provided with the gap of passing through for biogas.Dividing plate 135 is venetian blind type; Dividing plate 135 is from top to bottom arranged, and adjacent separator direction is relatively staggered.The sewage that contains biogas enters cylindrical shell 1 by riser tube 11 from fluid inlet 132, and the biogas in sewage rises with water vapour, and biogas continues to rise by the hole on orifice plate 134, and water vapour major part condenses on orifice plate 134.Biogas continues to rise, and by the gap on dividing plate 135, and in biogas, residual water vapour is held back by dividing plate 135, condenses on dividing plate 135, and final landing, to cylindrical shell 1 bottom, is back to the reaction zone 21 of tank body 1 bottom by the return line 10 being connected with liquid outlet 136.Biogas is discharged cylindrical shell 131 by venting port 133, is collected.
As shown in Fig. 1,4:
The water inlet pipe 5 of water distribution unit 6 can also derive 4 water inlet pipe branches 2, extends into respectively 4 different regions in reactor 1 cloth pool, bottom 21 same planes; Described gas-liquid separator 13 is also arranged to 4, and 4 different zones that the return line 10 that each gas-liquid separator 13 connects marks off with water inlet pipe branch 2 respectively communicate; In each water inlet pipe branch 2, be respectively arranged with valve 3.
The operational scheme of double-cycling anaerobic reaction unit of the present invention is as follows:
Sewage is sent into the cloth pool 21 of tank body 1 bottom by the water inlet pipe 5 of water distribution system and the water inlet pipe branch 2 that is derived by water inlet pipe 5; Water jet 4, by strong injection, has played the effect of stirring-up sewage.Sewage is put generation biochemical reaction on cloth pool 21, and organic matter degradation forms the concentrated region of floc sludge.Biogas, water, granular sledge rise and arrive one-level triphase separator 7, and most of granular sledge is kept off back by flap 22.Biogas and a part of water enter collection chamber 8 by gas collection hole 12 on the one hand, and enter the gas-liquid separator 13 at tank body 1 top by riser tube 11; Remaining biogas, water, granular sledge continue rising arrival secondary triphase separator 14 on the other hand.Arrive after secondary triphase separator 14, granular sledge is kept off back by flap 22, and biogas and a part of water enter collection chamber 8 by gas collection hole 12, and enter the gas-liquid separator 13 at tank body 1 top by riser tube 11; Remaining water and the granular sledge not being blocked infiltrate overflow groove 16, enter the setting tank 17 being arranged in effluent trough 15.The granular sledge not being blocked deposits in setting tank 17, and water is discharged tank body 1 by rising pipe 18.Biogas in gas-liquid separator 13 is discharged tank body 1 by venting port 133, and remaining water is back to cloth pool 21 by return line 10; The granular sledge precipitating in setting tank and a part of water are back to cloth pool 21 by outer circulation pipeline 19.To collection chamber 8, be internal recycle of the present invention from collection chamber 8 to gas-liquid separator 13 to cloth pool 21; Again to cloth pool 21, be outer circulation of the present invention from cloth pool 21 approach one-level triphase separators 7 and secondary triphase separator 14 to setting tank 17.
In the processing power processing condition of existing anaerobic device, all require ss suspended solid to be less than 2000mg/L, more than ss suspended solid exceedes 2000mg/L, especially when ss suspended solid reaches 10000mg/L left and right, anaerobic reaction device substantially can not steady running, and volumetric loading moves substantially below 2kg.COD/m3.d, in the time reaching 5kg.COD/m3.d, its anaerobic reaction device can not steady running, result of use is poor simultaneously, and efficiency is on the low side.
Learn by experiment:
The highest 34706 mg/L of influent COD cr load of the present invention, minimum 16961 mg/L, average 23455 mg/L;
The highest 19820 mg/L of water inlet ss suspended solid, minimum 15000 mg/L, average 17530 mg/L.
The highest 4890 mg/L of effluent clear solution CODcr, minimum 2902 mg/L, average 4002 mg/L, clearance is the highest by 87.08%, and minimum 78.77%, average 81.9%;
The CODcr the highest 13.86KgCODcr/m3.d that loads, minimum 10.98 KgCODcr/m3.d, average 12.95 KgCODcr/m3.d;
If adopt existing anaerobic device, anaerobism volumetric loading is all below 2 KgCODcr/ m3.d, and device can not steady running.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a double-cycling anaerobic reaction unit, comprises tank body; In described tank body, be disposed with from the bottom to top cloth pool, one-level triphase separator, secondary triphase separator, gas-liquid separator; Also comprise water distribution system, described water distribution system comprises some water distribution units; Described water distribution unit is installed on tank body lower part cloth pool, comprise extend into the water inlet pipe of tank interior, for controlling the valve of water inlet pipe; The part that described water inlet pipe extends into tank body is provided with some water jets; Water distribution system also comprises riser tube and return line; Described riser tube upper end communicates with the gas-liquid separator that is positioned at tank body top, and lower end communicates with the collection chamber of triphase separator; Described return line upper end communicates with the gas-liquid separator that is positioned at tank body top, and Yu Bu pool, lower end communicates; It is characterized in that: described water distribution system also comprises external circulating system; Described external circulating system comprises some setting tanks that are arranged in effluent trough; Described setting tank is connected mutually, and communicates with overflow groove; On overflow groove, be provided with the rising pipe of the liquid of clarification being discharged to tank body; Described external circulating system also comprises outer circulation pipeline; Described outer circulation pipeline upper end communicates with setting tank lower end, and Yu Bu pool, outer circulation pipeline lower end communicates.
2. a kind of double-cycling anaerobic reaction unit according to claim 1, is characterized in that: on described outer circulation pipeline, be provided with valve.
3. a kind of double-cycling anaerobic reaction unit according to claim 1, described triphase separator comprises the spaced flap of some layers, for collecting the collection chamber of biogas, it is characterized in that: the top along described flap is vertically provided with cutoff board.
4. a kind of double-cycling anaerobic reaction unit according to claim 3, is characterized in that: be vertically provided with baffle plate along described flap lower end.
5. a kind of double-cycling anaerobic reaction unit according to claim 1, described gas-liquid separator comprises cylindrical shell, the fluid inlet communicating with riser tube, the liquid outlet communicating with return line, for the orifice plate of gas-liquid separation; Described cylinder top is provided with venting port; Liquid outlet is arranged on cylinder body bottom; In cylindrical shell, be positioned on fluid inlet and be horizontally disposed with abacus, it is characterized in that: the interior oblique some dividing plates that are provided with of cylindrical shell; Described dividing plate is positioned on orifice plate; Dividing plate is provided with the gap of passing through for biogas.
6. a kind of double-cycling anaerobic reaction unit according to claim 5, is characterized in that: described dividing plate is venetian blind type; Dividing plate is from top to bottom arranged, and adjacent separator direction is relatively staggered.
7. a kind of double-cycling anaerobic reaction unit according to claim 1, is characterized in that: described water distribution unit is 3, and from top to bottom arranges successively; The water jet of all water distribution units is arranged in same plane.
8. a kind of double-cycling anaerobic reaction unit according to claim 1, is characterized in that: the water inlet pipe of described water distribution unit derives 4 water inlet pipe branches, extends into respectively 4 different regions in the same plane of cloth pool; Described gas-liquid separator is 4, and 4 different zones that the return line that each gas-liquid separator connects marks off with water inlet pipe branch respectively communicate; In each water inlet pipe branch, be respectively arranged with valve.
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| CN106277306A (en) * | 2016-07-14 | 2017-01-04 | 苏州淡林环境科技有限公司 | A kind of anti-race mud four is separated anaerobic reactor |
| CN106186312A (en) * | 2016-09-14 | 2016-12-07 | 无锡践行中欧科技有限公司 | anaerobic system tank structure |
| CN113620425B (en) * | 2021-08-27 | 2023-01-31 | 金锣水务有限公司 | Upflow anaerobic sludge blanket reaction device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201031176Y (en) * | 2007-04-03 | 2008-03-05 | 山东美泉环保科技有限公司 | Circulation type grain sludge reactor |
| US20080277328A1 (en) * | 2007-05-07 | 2008-11-13 | Zhao Joe R H | Up-flow Multi-stage Anaerobic Reactor (UMAR) |
| CN201400622Y (en) * | 2009-03-27 | 2010-02-10 | 华南理工大学 | Multi-point backflow type IC anaerobe processing reactor |
| CN202658005U (en) * | 2012-06-20 | 2013-01-09 | 自贡市泉峰环保设备制造有限公司 | Double-circulation anaerobic reaction device |
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| JP4687600B2 (en) * | 2006-07-31 | 2011-05-25 | 株式会社Ｉｈｉ | Methane fermentation equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201031176Y (en) * | 2007-04-03 | 2008-03-05 | 山东美泉环保科技有限公司 | Circulation type grain sludge reactor |
| US20080277328A1 (en) * | 2007-05-07 | 2008-11-13 | Zhao Joe R H | Up-flow Multi-stage Anaerobic Reactor (UMAR) |
| CN201400622Y (en) * | 2009-03-27 | 2010-02-10 | 华南理工大学 | Multi-point backflow type IC anaerobe processing reactor |
| CN202658005U (en) * | 2012-06-20 | 2013-01-09 | 自贡市泉峰环保设备制造有限公司 | Double-circulation anaerobic reaction device |
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| JP特开2008-29993A 2008.02.14 |
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