CN206298425U - A kind of multi-mode reaction tank for sewage disposal - Google Patents
A kind of multi-mode reaction tank for sewage disposal Download PDFInfo
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- CN206298425U CN206298425U CN201621297518.7U CN201621297518U CN206298425U CN 206298425 U CN206298425 U CN 206298425U CN 201621297518 U CN201621297518 U CN 201621297518U CN 206298425 U CN206298425 U CN 206298425U
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Abstract
The utility model discloses a kind of multi-mode reaction tank for sewage disposal, belongs to environmental project technical field of sewage.The reaction tank includes water inlet, sewage allocation unit, pre- anoxic unit, anaerobic unit, anoxic unit, transition element, aerobic unit, muddy water mixed solution forced refluence unit and delivery port.Wherein sewage allocation unit is disposed adjacent with pre- anoxic unit, sets pipeline and is connected with pre- anoxic unit, anaerobic unit, transition element, and sets water inlet；Pre- anoxic unit is disposed adjacent and connects with anaerobic unit, aerobic unit；Anaerobic unit is disposed adjacent and connects with anoxic unit；Anoxic unit is disposed adjacent and connects with transition element；Transition element is disposed adjacent and connects with aerobic unit；Muddy water mixed solution forced refluence unit and delivery port are set in aerobic unit.Not only coefficient of oxygen utilization is high for the utility model, and floor space is small, and can take different running method according to varying environment temperature, different influent quality conditions, is a kind of good sewage disposal reaction tank of combination property to ensure optimal wastewater treatment efficiency.
Description
Technical field：
The utility model belongs to environmental project technical field of sewage, more particularly to a kind of multimode for sewage disposal
Formula reaction tank, can be used for sanitary sewage and can use the treatment of the industrial organic waste water of Wastewater Treated by Activated Sludge Process.
Background technology：
Water resources in china occupancy volume per person is few, and spatial distribution is unbalanced.With Chinese Urbanization's, industrialized acceleration, water
The demand gap of resource also increasingly increases.Under such background, sewage treatment industry turn into new industry, at present with it is originally aquatic
Product, water supply, draining, Treated sewage reusing industry are in status of equal importance.
In recent years, wastewater treatment in China industry is advanced by leaps and bounds, and overall development is in the fast-growing period, is mainly manifested in sewage
The aspects such as disposal ability is expanded rapidly, wastewater treatment rate is steadily improved, sewage load rapid growth.End in by the end of June, 2016,
National the planned city, county (being free of other organic towns) add up to build up sewage treatment plant 3934, and sewage treatment capacity 1.69 hundred million is stood
Square rice/day.
The sewage treatment plant's majority for building up uses Wastewater Treated by Activated Sludge Process, and Activated Sludge Process more ripe at present is divided into
Three series：(1) oxidation ditch series；(2) batch-type reaction tank (SBR)；(3)A2O series.
Oxidation ditch process can be divided into card Losail oxidation ditch, Orbal oxidation ditch, double channel type oxidation channels, three working position
Deng, it is a kind of modified of activated sludge process, with dephosphorization denitrogenation function, its reaction tank is the irrigation canals and ditches of closing, waste water and activity
The mixed liquor of sludge is constantly circulated wherein, therefore oxidation ditch also known as " continuous cyclic aeration method ".Such reaction tank lack
Point is deeply shallower pond, and floor space is larger, and surface mechanical aeration is larger to surrounding environment influence, and municipal sewage temperature is low in the winter time
Regional denitrification effect is poor.
It is by flowing into, reacting, precipitate, discharge and leave unused that the operation in the key reaction pond of batch-type reaction tank (SBR) is operated
Five operation compositions.Sewage in reaction tank by sequence, intermittently enter each reaction process, the operation in each sbr reactor pond
Operation is also in time arrangement intermittent duty in order.Before flowing into operation and implementing, the sewage after operation of leaving unused treatment is
Through discharge, in reaction tank remaining the active sludge intermixture of high concentration.When sewage injects to be flowed into, reaction tank can play tune
The effect in pond is saved, if carrying out aeration can obtain preaeration effect, sludge can also regenerated, recover its activity.Reaction process
It is the topmost procedure of SBR techniques.After sewage injection reaches predetermined volume, operation can be started, such as removal BOD,
Nitrification, the absorption of phosphorus, and denitrification etc..In spoil disposal operation, stop aeration and stir, mixed liquor is remained static, it is living
Property sludge is separated from water, equivalent to the effect of secondary sedimentation tank.By the supernatant after precipitation as treatment Chinese effluent, precipitation
Sludge stayed in reaction tank as kind of mud, play a part of returned sludge.After idle operation, treatment Chinese effluent, reaction
Pond stays cool, and waits next operation cycle.The subject matter that batch-type reaction tank (SBR) is present is：Complex operation,
It is high to automatic control requirement；In addition its technological process determines that apparatus utilization rate is low in itself.
A2The reaction tank of O is made up of anaerobism, anoxic and aerobic three sections, and flora is mainly by nitrifier and denitrifying bacterium, poly- phosphorus
Bacterium etc. constitutes.In aerobic section, will become a mandarin middle organic nitrogen and ammonia nitrogen of nitrobacteria is acted on by biological nitration and changes into nitrate；
The interior nitrate brought into that flows back by biological denitrification, is changed into nitrogen and escapes into air by anoxic section, denitrifying bacteria
In, so as to reach the purpose of denitrogenation；In anaerobism section, polyP bacteria release phosphorus, and absorb the degradable organic matter such as lower fatty acid；
And in aerobic section, polyP bacteria excess absorbs phosphorus, and the discharge for passing through excess sludge, phosphorus is removed.Because denitrogenation and dephosphorization are external
The requirement of portion's environmental condition is conflicting, and denitrogenation requirement organic loading is relatively low, and sludge age is more long, and dephosphorization requirement is organic negative
Lotus is higher, and sludge age is shorter, is often difficult balance；PolyP bacteria discharges phosphorus under anaerobic state and the denitrification of anoxic zone generation is past
Competed toward that can be formed in carbon source；Generally, for the more rich situation of carbon source, the reaction tank operates reliable and stable, dephosphorization
Denitrogenation degree is high, water outlet high treating effect.
The content of the invention：
A kind of technical problem that the utility model exists for above-mentioned each reaction tank, there is provided multi-mode for sewage disposal
Reaction tank.Not only coefficient of oxygen utilization is high for the multi-mode reaction tank that the utility model is provided, and floor space is small, and can be according to difference
Environment temperature, different influent quality conditions take different running method, to ensure optimal wastewater treatment efficiency, the utility model
It is a kind of good sewage disposal reaction tank of combination property.
A kind of multi-mode reaction tank for sewage disposal provided by the utility model is distributed including water inlet 1, sewage
Unit 2, pre- anoxic unit 3, anaerobic unit 4, anoxic unit 5, transition element 6, aerobic unit 7, muddy water mixed solution forced refluence
Unit 8 and delivery port 9；The sewage allocation unit 2 is disposed adjacent with the pre- anoxic unit 3, in the sewage allocation unit 2
It is upper that the water inlet 1 is set；The pre- anoxic unit 3 is disposed adjacent and connects with the anaerobic unit 4, the pre- anoxic unit
3 are disposed adjacent and connect with the aerobic unit 7；The anaerobic unit 4 is disposed adjacent and connects with the anoxic unit 5；Institute
Anoxic unit 5 is stated to be disposed adjacent and connect with the transition element 6；The transition element 6 is disposed adjacent with the aerobic unit 7
And connect；Muddy water mixed solution forced refluence unit 8 and the delivery port 9 are set in the aerobic unit 7.
Set the first pipeline 10 in the sewage allocation unit 2 to be connected with the pre- anoxic unit 3, first pipeline 10
The first gate 24 of upper setting；Set second pipe 11 in the sewage allocation unit 2 to be connected with the anaerobic unit 4, described the
Second gate 25 is set on two pipelines 11；The 3rd pipeline 12 is set in the sewage allocation unit 2 to connect with the transition element 6
It is logical, the 3rd gate 26 is set on the 3rd pipeline 12.
Set in the 4th gate 27, the pre- anoxic unit 3 between the pre- anoxic unit 3 and the aerobic unit 7 and set
The first agitator 13 is put, sludge reflux mouthful 23 is set in the pre- anoxic unit 3.
Second agitator 14 is set in the anaerobic unit 4.
First impeller 15 is set in the anoxic unit 5.
First aerator 16 and the second impeller 17 are set in the transition element 6.
Second aerator 18 and the 3rd impeller 19 are set in the aerobic unit 7.
First water pump 20 is set on the muddy water mixed solution forced refluence unit 8, and the first water pump 20 passes through the 4th pipeline 21
Connected with the anaerobic unit 4；Second water pump 28 is set on the muddy water mixed solution forced refluence unit 8, and the second water pump 28 leads to
The 5th pipeline 22 is crossed to be connected with the anoxic unit 5.
Sewage allocation unit 2 is entered by water inlet 1 by the sewage for pre-processing, as desired by controlling the first gate
24th, the second gate 25, the open degree of the 3rd gate 26 adjust the water for entering corresponding subsequent cell.
The returned sludge that the sewage entered by sewage allocation unit 2 enters with sludge reflux mouthful 23 is sufficiently mixed, and passes through
Anti-nitration reaction releases anaerobic zone biology the adverse effect that phosphorus is produced with nitrate in eliminating returned sludge.First agitator is set
13 are sufficiently mixed with ensureing sewage and returned sludge in this element.The control of 4th gate 27 enters the pre- muddy water of anoxic unit 3 and mixes
Close the amount of liquid.
The anaerobic unit 4 is adjacently positioned and connects with anoxic unit 5, and the second agitator is set in anaerobic unit 4
14.PolyP bacteria, in the anaerobic phosphorus release of the anaerobic unit 4, is that follow-up aerobic phosphorus absorption is prepared.The second agitator 14 is set to ensure
Sewage and returned sludge are sufficiently mixed in this element.
The anoxic unit 5 is adjacently positioned and connects with transition element 6, and the first impeller is set in anoxic unit 5
15.Denitrifying bacteria under anoxic conditions, reduces nitrate, discharges molecular nitrogen or nitrous oxide, sets the first plug-flow
Device 15 is ensureing sludgd deposition in this element.
The transition element 6 is disposed adjacent and connects with aerobic unit 7, and the first aeration dress is set in transition element 6
Put 16 and first impeller 17.Nitrifier under conditions of aerobic, by ammoxidation be nitrate, the transition element 6 with it is good
Microorganism is by breeding degradation of organic substances in oxygen unit 7.The first impeller 17 is set to ensure that sludge does not occur in this element to sink
Product, sets the first aerator 16 and provides aerobic environment.
Second aerator 18, the second impeller 19 and delivery port 9 are set in the aerobic unit 7.Nitrifier is aerobic
Under conditions of, it is nitrate by ammoxidation, microorganism is by breeding degradation of organic substances in unit.Set the second impeller 19 with
Ensure sludgd deposition in this element, the second aerator 18 is set aerobic environment is provided.Sewage after treatment is through water outlet
Mouth 9 enters subsequent treatment facility.
First water pump 20 is set on the muddy water mixed solution forced refluence unit 8, and the first water pump 20 passes through the 4th pipeline 21
Connected with anaerobic unit 4；Second water pump 28 is set on muddy water mixed solution forced refluence unit 8, and the second water pump 28 is by the 5th pipe
Road 22 is connected with anoxic unit 5.According to treatment needs, by control the first water pump 20, the second water pump 28 frequency come adjust into
Enter the amount of anaerobic unit 4 and the muddy water mixed solution of anoxic unit 5.
The utility model operational mode and operation principle are as follows：
Operational mode one：By front end pre-process sewage by water inlet enter sewage allocation unit, by adjust with respectively
The open degree of unit gate, regulation enters the sewage quantity of each unit.Wherein, 30% sewage enters pre- anoxic unit, 20%
Sewage enters anaerobic unit, and 50% sewage enters anoxic unit, mixed-liquor return to anoxic unit, and returned sludge is back to pre- lacking
Oxygen unit, then whole reaction tank by water inlet → pre- anoxic unit (anoxic) → anaerobic unit (anaerobism) → anoxic unit (anoxic) →
Transition element (anoxic) → aerobic unit (aerobic) → water exit mode operation.
Operational mode two：By front end pre-process sewage by water inlet enter sewage allocation unit, by adjust with respectively
The open degree of unit gate, regulation enters the sewage quantity of each unit.Wherein, 90% sewage enters pre- anoxic unit, 10%
Sewage enters anaerobic unit, and mixed-liquor return is to pre- anoxic unit and anaerobic unit, and returned sludge is back to pre- anoxic unit, then whole
Individual reaction tank presses water inlet → pre- anoxic unit (anoxic) → anaerobic unit (anoxic) → anoxic unit (anaerobism) → transition element (thanks to
Oxygen) → aerobic unit (aerobic) → water exit mode operation.
Operational mode three：By front end pre-process sewage by water inlet enter sewage allocation unit, by adjust with respectively
The open degree of unit gate, regulation enters the sewage quantity of each unit.Wherein, 100% sewage enters pre- anoxic unit, mixed liquor
Pre- anoxic unit, anaerobic unit and anoxic unit are back to, returned sludge is back to pre- anoxic unit, then whole reaction tank is by water inlet
→ pre- anoxic unit (anoxic) → anaerobic unit (anoxic) → anoxic unit (anoxic) → transition element (aerobic) → aerobic unit
(aerobic) → water exit mode runs.
Operational mode four：By front end pre-process sewage by water inlet enter sewage allocation unit, by adjust with respectively
The open degree of unit gate, regulation enters the sewage quantity of each unit.Wherein, 100% sewage enters pre- anoxic unit, and activity is dirty
The mixed liquor of mud by the 4th gate 27 enter pre- anoxic unit, make the mixed liquor of sewage and activated sludge in whole reaction tank not
It is disconnected to circulate.Whole reaction tank presses oxidation ditch mode operation.
Brief description of the drawings：
Fig. 1 is the partitioned organization schematic diagram of the utility model reaction tank；
Fig. 2 is the internal structure layout drawing of the utility model reaction tank.
In figure：1：Water inlet；2：Sewage allocation unit；3：Pre- anoxic unit；4：Anaerobic unit；5：Anoxic unit；6：Cross
Cross unit；7：Aerobic unit；8：Muddy water mixed solution forced refluence unit；9：Delivery port；10：First pipeline；11：Second pipe；
12：3rd pipeline；13：First agitator；14：Second agitator；15：First impeller；16：First aerator；17：Second
Impeller；18：Second aerator；19：3rd impeller；20：First water pump；21：4th pipeline；22：5th pipeline；23：
Sludge reflux mouthful；24：First gate；25：Second gate；26：3rd gate；27：4th gate；28：Second water pump.
Specific embodiment：
The utility model is further described with reference to Figure of description.
It is as follows that the utility model provides a kind of implementation steps of the multi-mode reaction tank for sewage disposal：
1st, the sewage by pre-processing enters sewage allocation unit by water inlet, as desired by the unlatching of regulating gate
Degree regulation enters the water of pre- anoxic unit, anaerobic unit and anoxic unit.
2nd, sewage and sludge reflux mouthful agitated device of the returned sludge for entering for being entered by sewage allocation unit are stirred pre-
Anoxic unit is sufficiently mixed, and denitrifying bacteria occurs denitrification using the carbon source in sewage, by the nitric acid in returned sludge
Salt is reduced into nitrogen, to eliminate its adverse effect for releasing anaerobic zone biology phosphorus generation.
3rd, the agitated device stirring of sewage that the muddy water mixed solution and sewage allocation unit for being entered by pre- anoxic unit enter exists
Anaerobic unit is sufficiently mixed, polyP bacteria anaerobic phosphorus release in anaerobic unit, is that follow-up aerobic phosphorus absorption is prepared.
4th, the muddy water mixed solution that the muddy water mixed solution and aerobic unit for being entered by anaerobic unit flow back fills in anoxic unit
Divide mixing, denitrifying bacteria with this understanding, reduces nitrate, discharges molecular nitrogen or nitrous oxide.
5th, transition element is in aerobic state, and ammoxidation is nitrate, micro- life in unit with this understanding by nitrifier
Thing is by breeding other organic matters of degrading.
6th, aerobic unit further removes ammonia nitrogen and organic matter, by delivery port into successive depths treatment.
7th, making the pre- anoxic and anoxic unit of the muddy water mixed solution forced refluence front end in aerobic unit, to carry out denitrification anti-
Should be reducing the content of nitrate in water outlet.
Below by taking certain municipal sewage plant as an example, analyzed through repeatedly monitoring, COD, NH of reaction tank water inlet3-N、TN、TP
Averagely it is respectively 226.4mg/L, 23.6mg/L, 34.9mg/L, 3.3mg/L；The corresponding pollutant index of reaction tank water outlet is average
Value is respectively 32.8mg/L, 3.9mg/L, 9.7mg/L, 0.8mg/L；COD、NH3- N, the clearance of TN, TP for 85.5%,
83.5%th, 72.2%, 75.8%, reaction tank water outlet by precipitation, filtering, sterilization even depth treatment after, effluent index
Reach《Urban wastewater treatment firm pollutant emission standard (GB18918-2002)》In one-level A standards.
Preferred embodiment of the present utility model is these are only, but protection domain of the present utility model is not limited thereto, and appoints
What those familiar with the art the change that can readily occur in or replaces in the technical scope that the utility model is disclosed
Change, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with claim
The protection domain for being defined is defined.
Claims (8)
1. a kind of multi-mode reaction tank for sewage disposal, it is characterised in that the multi-mode reaction tank includes water inlet (1), dirty
Water distribution units (2), pre- anoxic unit (3), anaerobic unit (4), anoxic unit (5), transition element (6), aerobic unit (7),
Muddy water mixed solution forced refluence unit (8) and delivery port (9)；The sewage allocation unit (2) and pre- anoxic unit (3) phase
Neighbour is set, and the water inlet (1) is set on the sewage allocation unit (2)；The pre- anoxic unit (3) and the anaerobism list
First (4) are disposed adjacent and connect, and the pre- anoxic unit (3) is disposed adjacent and connects with the aerobic unit (7)；The anaerobism
Unit (4) is disposed adjacent and connects with the anoxic unit (5)；The anoxic unit (5) is adjacent with the transition element (6) to be set
Put and connect；The transition element (6) is disposed adjacent and connects with the aerobic unit (7)；Set in the aerobic unit (7)
Muddy water mixed solution forced refluence unit (8) and the delivery port (9).
2. sewage disposal reaction tank according to claim 1, it is characterised in that the is set in the sewage allocation unit (2)
One pipeline (10) is connected with the pre- anoxic unit (3), and the first gate (24) is set on first pipeline (10)；The sewage
Second pipe (11) is set in allocation unit (2) to be connected with the anaerobic unit (4), and second is set on the second pipe (11)
Gate (25)；Set the 3rd pipeline (12) in the sewage allocation unit (2) to be connected with the transition element (6), the described 3rd
3rd gate (26) is set on pipeline (12).
3. multi-mode reaction tank according to claim 1, it is characterised in that the pre- anoxic unit (3) and the aerobic list
Set between first (7) and the first agitator (13), the pre- anoxic list are set in the 4th gate (27), the pre- anoxic unit (3)
Sludge reflux mouthful (23) is set in first (3).
4. multi-mode reaction tank according to claim 1, it is characterised in that second is set in the anaerobic unit (4) and is stirred
Device (14).
5. multi-mode reaction tank according to claim 1, it is characterised in that the first plug-flow is set in the anoxic unit (5)
Device (15).
6. multi-mode reaction tank according to claim 1, it is characterised in that first is set in the transition element (6) and is aerated
Device (16) and the second impeller (17).
7. multi-mode reaction tank according to claim 1, it is characterised in that second is set in the aerobic unit (7) and is aerated
Device (18) and the 3rd impeller (19).
8. multi-mode reaction tank according to claim 1, it is characterised in that the muddy water mixed solution forced refluence unit (8)
The first water pump of upper setting (20), first water pump (20) is connected by the 4th pipeline (21) with the anaerobic unit (4)；It is described
Second water pump (28) is set on muddy water mixed solution forced refluence unit (8), and second water pump (28) is by the 5th pipeline (22)
Connected with the anoxic unit (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621297518.7U CN206298425U (en) | 2016-11-29 | 2016-11-29 | A kind of multi-mode reaction tank for sewage disposal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621297518.7U CN206298425U (en) | 2016-11-29 | 2016-11-29 | A kind of multi-mode reaction tank for sewage disposal |
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| CN206298425U true CN206298425U (en) | 2017-07-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396105A (en) * | 2016-11-29 | 2017-02-15 | 中冶华天南京工程技术有限公司 | Multi-mode reaction tank for sewage treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396105A (en) * | 2016-11-29 | 2017-02-15 | 中冶华天南京工程技术有限公司 | Multi-mode reaction tank for sewage treatment |
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