CN209507895U - A kind of biochemical sewage processing pond - Google Patents
A kind of biochemical sewage processing pond Download PDFInfo
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- CN209507895U CN209507895U CN201821942918.8U CN201821942918U CN209507895U CN 209507895 U CN209507895 U CN 209507895U CN 201821942918 U CN201821942918 U CN 201821942918U CN 209507895 U CN209507895 U CN 209507895U
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Abstract
The utility model relates to a kind of biochemical sewage processing ponds, it include main aeration zone, air lift area, sludge is stable area, clarification unit, irrigation channel and water outlet channel inside biochemical treatment tank, the starting point of the main aeration zone of the biochemical treatment tank is arranged in the water inlet mixed zone of the biochemical treatment tank；The air lift area is located at the main aeration zone end of the biochemical treatment tank, and by mixture plug-flow in main aeration zone into sludge is stable area, mixture returns main aeration zone the initial segment by sludge is stable area, converges with water inlet.Clarify unit in sludge is stable area will a part of mixture be separated by solid-liquid separation after the water that obtains that treated, most of circulation fluid passes through foot passage and new water inlet is mixed together into main aeration zone, completes entire circulation.Mixed liquor dissolved oxygen concentration after air lift is enhanced, and activated sludge obtains additional stabilization procedures, constantly improve sewage treatment capacity, and difficult biochemical substances of especially degrading make in water outlet nitrogen substance minimum and excess sludge reduction.
Description
Technical field
The utility model relates to a kind of biochemical sewage processing ponds, are applied to advanced biochemical water treatment field.With the prior art
It compares, the utility model more particularly to the circulation for increasing intracisternal material in biochemical treatment tank.
Background technique
In in the past few decades, classical biochemical water treatment technology has obtained continuous improvement.Currently, classical biochemistry
Water treatment technology generally includes primary sedimentation tank, activated sludge biochemical processing pond, secondary settling tank, and wherein secondary settling tank sludge reflux is at biochemistry
Manage pond.For example, AO AAO technique is using 2 grades or 3 grades of biochemical treatments (anaerobism, anoxic, aerobic) or SBR technique, these are all
It is current international routine techniques.In order to preferably protect environment, enter on so-called 4th grade of sewage treatment skill in the world
Art.
In March, 2006, German Wilke doctor Engelbart disclose one on the technical conferences of Nanjing Hohai University
A new technique, BioDopp technique (country is also translated as " biology multiplication ").Doctor Engelbart in current meeting, the
The primary open all basic fundamental details and parameter exchanged about BioDopp technique.Later, this technology is obtained in China
Relatively broad popularization and successfully application.
Relative to traditional activated sludge process technique, the most impressive important speciality of BioDopp technique is entire
Low-down dissolved oxygen concentration is kept in biochemical aeration tank；Generally acknowledged, the dissolved oxygen in biochemistry pool systemic circulation end need to control
Maximum < 0.3mg/L.BioDopp technique realizes that this feature is by, using special aerator, being somebody's turn to do in main biochemical areas
Aerator applied for patent in European Union and China respectively in 1987, referring to EP0309474 and CN87106301A.
In addition, BioDopp technique is mentioned using air and being pushed away come circulating active sludge, and by treatment sewage with the mud that is recycled
Aqueous mixtures are mixed, in this way, so that mud mixture in biochemistry pool is along circulating through different aerations
Stage and different admixtures.Also, it praises highly mixture in pond in practical operation to follow in hydraulic detention time (HRT) range
Up to ten times of ring multiplying power, the foot passage that circulating mixture passes through integrated sludge retention device.For other techniques,
The activated sludge concentration of BioDopp technique is by about twice of raising or more, so that treatment effect also reaches double.Therefore, lead to
It crosses sludge retention device and is enriched in biochemistry pool sludge efficiency and be higher than common secondary settling tank.BioDopp technique can having or
Do not have to use in the case where presettling.
In the heavy civil sewage treatment plant of China, repeatedly prove that BioDopp technique is that very efficient activity is dirty
Mud system, nitrification, denitrification synchronous can be carried out with COD degradation.However, the water outlet of BioDopp technique can not reach nearest
The higher water outlet requirement that government proposes, such as surface water IV or Group III standard.
Utility model content
The purpose of this utility model is in order to improve sewage water treatment method, to obtain better outlet effect, preferably
Protect environment.
Former BioDopp technique uses such as 10 times of circulating ratios in processing sewage hydraulic detention time (HRT), table
Many outlet effects better than traditional handicraft such as AO, AAO or SBR are revealed.Research tables different from experience before, new at present
It is bright, more preferable active sludge treatment effect can be obtained using circulating ratio more higher than former BioDopp technique, and cleaner go out
Water water quality.
However, since the systemic circulation in biochemical treatment tank need to realize that air lift plug-flow provides more simultaneously by air lift plug-flow
For more oxygen transfers into the mixture recycled, bigger circulating ratio required in this way will lead to original BioDopp process
Great variety occurs.In order to control the low dissolved oxygen of the main aeration zone BioDopp simultaneously, also for the nitric acid for controlling water outlet simultaneously
The new design of salt nitrogen concentration, original BioDopp process modification and pond body structure is necessary, and especially one to air lift entire
The completely new design of function in technique.
In order to solve the above-mentioned technical problem, the utility model provides a kind of biochemical sewage processing pond, relative to AO, AAO
A water (flow) direction opposite with traditional method is used with the processing pond of BioDopp technological design, the utility model.
A kind of biochemical sewage processing pond, biochemical treatment tank inside include main aeration zone, air lift area, sludge is stable area, clarification
The main aeration zone of biochemical treatment tank is arranged in unit, irrigation channel and water outlet channel, the water inlet mixed zone of the biochemical treatment tank
Starting point；The air lift area is located at the main aeration zone end of the biochemical treatment tank, by mixture plug-flow in main aeration zone into dirt
Mud stable region, mixture return main aeration zone the initial segment by sludge is stable area, converge with water inlet.
It wherein, further include the sludge is stable area being mounted below clarification unit in the biochemical treatment tank.
It wherein, further include being mounted on clarification unit side sludge is stable area, while sludge is stable in the biochemical treatment tank
Area bottom is installed by aerator.
Wherein, further include in the biochemical treatment tank after the clarification unit is set, the dirt of sludge is stable area end
Bucket.
Wherein, it is described water outlet channel be arranged in the biochemical treatment tank, it is described clarification unit top.
The above-mentioned technical proposal of the utility model has the beneficial effect that:
The reverse water flow of the utility model is realized by following design, raw water water inlet and material mixing position in reaction tank
It sets and is arranged far from air lift position, i.e., after integrated clarification module, air lift plug-flow mixture enters main exposure by return flow line
In gas area, air air lift position is located at the tail portion of the main aeration zone of biochemical treatment tank.
Although air lift plug flow device has supplied considerable oxygen into circulation mud mixture, this to be newly pumped into sewage
Water inlet is mixed into the mode of biochemical treatment tank systemic circulation, can bear in the main aeration zone of biochemical treatment tank using much higher
Circulating ratio, without will lead to excessively high dissolved oxygen concentration.
Studies have shown that oxygen of the mass transfer into water that the air lift position of the utility model increases air lift plug-flow newly, mainly
It is utilized in recirculating zone by activated sludge, is used for sludge stabilizing process；It is shown according to actual result, air lift plug-flow is increased
Oxygen be not utilized and cause to generate more unwanted nitrate nitrogens.
In the present invention, sewage raw water is mixed at water inlet mixing with backflow mixed liquor, aeration zone main first
It can be with better control anaerobic environment.Then after low dissolved oxygen conversion zone, air lift plug-flow, which generates, is much higher than original BioDopp
The internal circulating load of technique also generates more dissolved oxygens.On the other hand, before air lift plug-flow, BioDopp process degradation pollutant
Institute advantageous be reinforced.Accordingly, with respect to all other common process, increase in the intracisternal material cyclic process of the utility model
The stabilization process of a necessary optimization activated sludge is added.
As described above, it is suitable to be selected according to the actual performance of activated sludge under known active sludge treatment principle
When pollutant total load, the processing of the utility model can achieve low-down organic concentration and total nitrogen concentration, such as surface water
IV standard or III standard.
To sum up, the reflux cycle rate of one side biochemical sewage processing pond has very relative to original BioDopp technique
It is big to improve, such as the circulating ratio in sewage hydraulic detention time is increased to 20 times or more, it is equivalent to relative to original
BioDopp process cycles speed is mentioned more than twice；On the other hand, living after using reverse biochemical treatment tank water circulation direction
Property sludge stabilizing is significantly strengthened.After additional sludge is stable process occurs mainly in air lift, provided using air lift
Dissolved oxygen.This is also to handle sewage to by the utility model, the scientific explarnation for biorefractory organic of more degrading.This reality
With the novel primary main basic raising for being directed to biochemical process provided after BioDopp technique is announced 12 years for the first time.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.Specific embodiment of the present utility model is shown in detail by following embodiment and its attached drawing.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is a kind of plan view of the biochemical treatment tank of biochemical sewage processing pond of the utility model；
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing 1, it is to be solved in the utility model to make
Technical problem, technical solution and advantage are clearer, and will be described in detail in conjunction with specific embodiments, and example is served only for
It explains the utility model, is not intended to limit the scope of the utility model.
The utility model is expressed as shown in Fig. 1.
Project (1) is biochemical treatment pond, as biochemical treatment tank；
Project (2) is the new position of air-lift device, as air lift area；
Project (3) is sludge retention module, as clarification unit, is mounted on sludge is stable area；
Project (4) is the new position of raw water mixing, as water inlet mixed zone, different from former BioDopp technique, former
BioDopp technique raw water hybrid position is after air lift or air lift；
Project (5) is water outlet channel, is mounted on above sludge retention module, for the water outlet outflow system after clarifying；
Project (6) is the main aeration zone of biochemical treatment tank.
Project (7) is sludge is stable area, the sludge is stable area is channel design.
The utility model embodiment provides a kind of biochemical sewage processing pond, includes main aeration zone inside biochemical treatment tank 1
6, air lift area 2, sludge is stable area 7, clarification unit 3, irrigation channel and water outlet channel 5, the water inlet mixing of the biochemical treatment tank 1
The starting point of the main aeration zone 6 of the biochemical treatment tank 1 is arranged in area 4；The air lift area 2 is located at the main aeration of the biochemical treatment tank 1
6 end of area, by mixture plug-flow in main aeration zone 6 into sludge is stable area 7, mixture returns master by sludge is stable area 7
6 the initial segment of aeration zone, converges with water inlet.
It wherein, further include the clarification unit 3 for being mounted on the top in the sludge is stable area 7 in the biochemical treatment tank 1.
It wherein, further include the sludge is stable area 7 for being mounted on clarification 3 side of unit in the biochemical treatment tank 1, simultaneously
7 bottom of sludge is stable area is installed by aerator.
Wherein, further include in the biochemical treatment tank 1 after the clarification unit 3 is set, 7 end of sludge is stable area
Sludge bucket.
Wherein, the water outlet channel be arranged in 1 in the biochemical treatment tank, the top of the clarification unit 3.
The reverse water flow of the utility model is realized by following design, raw water water inlet and material mixing position in reaction tank
It sets 4 and is arranged far from air lift position 2, i.e., after integrated clarification module, air lift plug-flow enters main aeration zone 6 by return flow line
Interior, air air lift position 2 is located at the tail portion of the main aeration zone 6 of biochemical treatment tank.
Case 1 is embodied, the utility model provides a kind of biochemical sewage processing pond, and implementation includes following step
Rapid: (1) sewage removes larger suspended matter and sand grains object, subsequently into the utility model institute by pretreatment (grid, settling pit)
State unit --- biochemistry pool, influent quality require TCOD:TN > 4；(2) in biochemistry pool, activated sludge concentration 8000mg/
L, sewage is within 12 hours residence times, synchronous degradation COD, ammonia nitrogen, nitrate nitrogen, and final settling section water outlet reaches surface water IV
COD < 20mg/L, the TN < 1.5mg/L that class water body requires；(3) specific pool size is 70mx12mx6m (long x wide x high),
Available depth 5.5m, total measurement (volume) 4600m3, processing water is 8000m3/ d, wherein main aeration zone 6 is 70mx8mx6m (long x wide x
It is high), it clarifies unit 370mx4mx5m (long x wide x high), is sludge is stable area 7 below settling section, air lift is located at the one of settling section
Side, air lift area size 6mx1mx6m (long x wide x high)；(4) water inlet enters from the other side in sludge is stable area 7, with circulating reflux
Also confluence enters main aeration zone 6, keeps low dissolved oxygen (DO < 0.2mg/L) in main aeration zone 6, maintains synchronous nitration and denitrification shape
State, with circulating water flow to main 6 end of aeration zone, after terminating most COD and TN biodegrade, into air lift area 2,
Under air lift plug-flow power, mixed liquor enters foot passage, and a part of water rises through settling section, after separation of solid and liquid, is discharged,
Most of circulation fluid passes through foot passage and new water inlet is mixed together into main aeration zone 6, completes entire circulation.
Case 2 is embodied, the utility model provides a kind of biochemical sewage processing pond, and implementation includes following step
It is rapid: (1) inflow 100m3Conditioning tank 40m is arranged since water inlet fluctuation is larger in the morning, afternoon and evening daily in/d3, the conditioning tank residence time
10 hours, for balanced water and water quality, while larger particles and silt were separated in conditioning tank, conditioning tank cleaning cycle
3 years；(2) immersible pump Q=4 m is equipped in conditioning tank3/ h, lift 15m, even into biochemical treatment tank, water outlet reaches surface water
The requirement of four class water, i.e. COD < 20mg/L, TN < 1.5mg/L；(3) the long 12m of biochemical treatment tank is divided into two in width range
Formant: main aeration zone 6 and settling section, wherein 6 width 1.8m of main aeration zone, bottom is equipped with aeration tube.The wide 0.6m of settling section, bottom
Portion is sludge is stable area 7；(4) main aeration zone 6 supplies oxygen 1.2~2.2kg/h, as influent concentration fluctuates, keeps low dissolved oxygen shape
State, settling section 0.5~0.8m/h of upflow velocity keep preferable clarifying effect, out aqueous suspension < as amount of inlet water fluctuates
5mg/L；
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (5)
1. a kind of biochemical sewage processing pond, biochemical treatment tank inside includes main aeration zone, air lift area, sludge is stable area, clarification list
Member, irrigation channel and water outlet channel, which is characterized in that
The starting point of the main aeration zone of the biochemical treatment tank is arranged in the water inlet mixed zone of the biochemical treatment tank；
The air lift area is located at the main aeration zone end of the biochemical treatment tank, and air lift area is by mixture plug-flow in main aeration zone into dirt
Mud stable region, mixture return main aeration zone the initial segment by sludge is stable area, converge with water inlet.
2. biochemical sewage processing pond as described in claim 1, which is characterized in that further include being mounted in the biochemical treatment tank
Clarify the sludge is stable area below unit.
3. biochemical sewage processing pond as described in claim 1, which is characterized in that further include being mounted in the biochemical treatment tank
The sludge is stable area of unit side is clarified, while aerator is installed in sludge is stable area bottom.
4. biochemical sewage processing pond as claimed in claim 2 or claim 3, which is characterized in that further include setting in the biochemical treatment tank
It sets after the clarification unit, the sludge bucket of sludge is stable area end.
5. biochemical sewage processing pond as claimed in claim 2 or claim 3, which is characterized in that the water outlet channel is arranged in the life
Change in processing pond, the top of the clarification unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821942918.8U CN209507895U (en) | 2018-11-23 | 2018-11-23 | A kind of biochemical sewage processing pond |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821942918.8U CN209507895U (en) | 2018-11-23 | 2018-11-23 | A kind of biochemical sewage processing pond |
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| CN209507895U true CN209507895U (en) | 2019-10-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111333191A (en) * | 2019-11-28 | 2020-06-26 | 恩格拜（武汉）生态科技有限公司 | Method for treating high-concentration organic wastewater by anaerobic-aerobic deep coupling |
-
2018
- 2018-11-23 CN CN201821942918.8U patent/CN209507895U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111333191A (en) * | 2019-11-28 | 2020-06-26 | 恩格拜（武汉）生态科技有限公司 | Method for treating high-concentration organic wastewater by anaerobic-aerobic deep coupling |
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