CN107188310A - It is a kind of to strengthen the method that Anoxic/Aerobic precipitates anaerobic technique mud decrement - Google Patents
It is a kind of to strengthen the method that Anoxic/Aerobic precipitates anaerobic technique mud decrement Download PDFInfo
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- CN107188310A CN107188310A CN201710587370.3A CN201710587370A CN107188310A CN 107188310 A CN107188310 A CN 107188310A CN 201710587370 A CN201710587370 A CN 201710587370A CN 107188310 A CN107188310 A CN 107188310A
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- anaerobic
- pond
- aerobic
- sludge
- anaerobic pond
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Abstract
The invention belongs to technical field of sewage, a kind of method for strengthening Anoxic/Aerobic precipitation anaerobic technique mud decrement is disclosed.The inventive method is that sewage is introduced into anoxic pond to provide carbon source for denitrification process, sewage flows through aeration tank and carries out Aerobic Process for Treatment and nitrifying process, the mud mixture of aeration tank end is pumped to anoxic pond and realizes that sewage introduces sedimentation basin progress natural sedimentation in denitrification, aeration tank, realizes mud-water separation；Precipitating sludge in sedimentation basin is evacuated to anaerobic pond, agitating device and filler device are installed in anaerobic pond, the filler of 20 ~ 30% volumes is added in filler device, plus sludge attachment specific surface area, by the temperature and mixing speed that control anaerobic pond, 80% mud decrement effect can be realized, Anoxic/Aerobic is precipitated anaerobic technique mud decrement effect and dramatically increases.The present invention goes out stream mode to anaerobic pond and transformed simultaneously, and outflow tube is located at pool wall, and it is gravity overflow to go out stream, saves energy consumption, effectively increases comprehensive utilization ratio.
Description
Technical field
The invention belongs to technical field of sewage, it is related to Sludge Reduction Technologies, and in particular to one kind reinforcing anoxic-good
The method of oxygen-precipitation-anaerobic technique mud decrement.
Background technology
Activated sludge process is more than 90% municipal sewage and 50% in most common dirty water living creature processing technique, world wide
The industrial wastewater of left and right all uses Wastewater Treated by Activated Sludge Process, but since being applied to sewage disposal from it, one it is main the problem of just
It is to produce substantial amounts of excess sludge.The expense of Treatment of Sludge has accounted for the 50% ~ 60% of whole sewage plant operating cost.And with
The development of economic society, sewage load just constantly increases, processing requirement will also be improved constantly, a large amount of excess sludges of generation
It is the maximum bottleneck that activated sludge process faces.
Excess sludge disposal is a part for complete sewage treatment process, therefore should put forth effort in sewage disposal process
In, i.e., the yield of sludge is reduced on source.In a variety of sludge in-situ Decrement Techniques, aerobic-precipitation-anaerobism (oxic-
Settling-anaerobic, OSA) technique with its reduced training substantially, need not add any chemical agent, non-secondary pollution,
Technique is simple, the low feature of energy consumption is considered as one of comparatively ideal decrement approach.
A+OSA techniques organically combine traditional A/O denitrification process and OSA sludge decrement process, can protect
Mud decrement is realized in the case of card effluent quality.But the technique is still in conceptual phase, stability in production run and can
It there is a problem by property, and according to sludge treatment present situation, be highly desirable to carry out by force the mud decrement efficiency of A+OSA techniques
Change, and the feasible measure on this respect need further to probe at present.
The content of the invention
For deficiencies of the prior art, A+OSA techniques can be dramatically increased it is an object of the invention to provide one kind
Mud decrement effect, it is simple to operate, and the reinforcing anaerobic-aerobic-precipitation-anaerobic technique mud decrement of operating cost will not be increased
Method.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：
A kind of method for strengthening anaerobic-aerobic-precipitation-anaerobic technique mud decrement, comprises the following steps：
（1）Sewage is introduced into anoxic pond and provides carbon source for denitrification；Sewage flows into aeration tank and carries out Aerobic Process for Treatment and nitrifying process；
（2）The mud mixture of aeration tank end is pumped to anoxic pond with 150% ~ 200% mixed liquid recycle ratio, remained in aeration tank
Remaining sewage introduces sedimentation basin and carries out natural sedimentation, realizes mud-water separation；
（3）The partly precipitated sludge in sedimentation basin is evacuated in anaerobic pond, anaerobic pond provided with company with 50% ~ 100% return sludge ratio
Packing volume filling rate is 20 ~ 30% in continuous agitating device and filler device, the filler device；Adjust anaerobic pond temperature and company
Continuous agitating device rotating speed, it is 0.2 ~ 0.3mg/L to control anaerobic pond dissolved oxygen concentration；It is evacuated in anaerobic pond after 5 ~ 9h of sludge retention scarce
Oxygen pond top, realizes sludge reflux；Excess sludge in sedimentation basin is discharged by discharge pipeline.
Further, the sludge concentration of the aeration tank is 2500 ~ 3000mg/L.
Further, the filler device is the annular space that two concentric net cylinders are surrounded, and two net cylinders have phase with anaerobic pond
The same center of circle, the net cylinder diameter that outside is relatively large in diameter is less than anaerobic pond diameter；The difference of two net cylinder diameters is slightly larger than filler diameter；
Corresponding annular cover is provided with above annular space, filler is limited in the fixation for facilitating filler in annular space.
Further, the filler is the spherical polypropylene or polythene material of internal many folds, and its specific surface area is bigger,
Equivalent to the anaerobic pond pool wall area for increasing attached growth of microorganisms；The packing material size is more than the net cylinder mesh diameter.
Further, the anaerobic pond is sealing device, and Chi Dinggaichu is provided with passage, and pool wall is provided with outflow tube, gone out
Stream mode is gravity overflow；Anaerobic pond water inlet pipe is provided with lifting water pump.
Further, temperature is 20 ~ 25 DEG C in the anaerobic pond, and temperature in anaerobic pond is controlled by water-bath；Mixing speed 100-
120r/min。
Further, the anoxic pond is continuous stream running status.
Compared with prior art, the beneficial effects of the invention are as follows：
1. the present invention is that filler is added in the anaerobic pond of traditional A+OSA techniques, the volumetric filling ratio control of filler for 20~
30%, increase sludge attachment specific surface area can realize 80% mud decrement effect, show A+OSA process sludges reduced training
Write increase.
2. set in anaerobic pond of the present invention and continuously stir device, by adjusting the dissolving in stirring intensity control anaerobic pond
Oxygen, it is 0.2 ~ 0.3mg/L to control dissolved oxygen, makes sludge continuous backflow, mud decrement effect is significantly improved, and increase rate reaches 20%
More than.
3. the present invention goes out stream mode to anaerobic pond and transformed, outflow tube is located at pool wall, and it is gravity overflow to go out stream,
Save energy consumption.
4. the present invention only need to add a small amount of filler in anaerobic pond, easily transformation, without newly-increased reaction unit and equipment,
Treatment of Sludge cost keeps constant.
Brief description of the drawings
Fig. 1 is routine A+OSA process flow diagrams；
Fig. 2 is the A+OSA of the embodiment of the present invention 3（T）Process flow diagram；
Fig. 3 is the A+OSA of the embodiment of the present invention 3（T）Technique and routine A+OSA process sludge reduced training figures；
Fig. 4 is the A+OSA of the embodiment of the present invention 3（T）Technique and routine A+OSA technique water treatment effect figures.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Embodiment 1
Experiment sludge is derived from the aerobic section sludge that realgar sewage treatment plant of Chongqing City tradition AAO techniques are normally run, and inoculation is dirty
The mixed genetic-neural network of mud（MLSS）Anoxic zone and aeration zone are 3000mg/L, and anaerobic pond is 6000mg/L.
A kind of method for strengthening anaerobic-aerobic-precipitation-anaerobic technique mud decrement of the present invention, as shown in figure 1, including such as
Lower step：
（1）Agitating device and filler device are added in the anaerobic pond of A+OSA techniques, filler device is two cylindrical stainless steels
The annular space that concentric net cylinder is surrounded；The spherical polypropylene material of many folds inside addition between two net cylinders, control filling
Than for 20%；In anaerobic pond pool wall corresponding position, perforate sets outflow tube, and leads to anoxic pond top；
（2）Sewage is introduced into anoxic pond and provides carbon source for denitrification；Sewage flows into aeration tank and carries out Aerobic Process for Treatment and nitrifying process,
The sludge concentration of aeration tank is 2500mg/L；
（3）The mud mixture of aeration tank end is pumped to anoxic pond with 150% mixed liquid recycle ratio, it is remaining in aeration tank
Sewage introduces sedimentation basin and carries out natural sedimentation, realizes mud-water separation；
（4）Partly precipitated sludge in sedimentation basin is evacuated to by anaerobic pond with 50% return sludge ratio, regulation anaerobic pond temperature is 20
DEG C, mixing speed 120r/min, anaerobic pond dissolved oxygen concentration is 0.2mg/L；Overflow in anaerobic pond after sludge retention 5h using gravity
The mode of stream flows into anoxic pond, realizes sludge reflux；Excess sludge in sedimentation basin is discharged by discharge pipeline.
Embodiment 2
Experiment sludge is derived from the aerobic section sludge that realgar sewage treatment plant of Chongqing City tradition AAO techniques are normally run, and inoculation is dirty
The mixed genetic-neural network of mud（MLSS）Anoxic zone and aeration zone are 3000mg/L, and anaerobic pond is 6000mg/L.
A kind of method for strengthening anaerobic-aerobic-precipitation-anaerobic technique mud decrement of the present invention, as shown in figure 1, including such as
Lower step：
（1）Agitating device and filler device are added in the anaerobic pond of A+OSA techniques, filler device is two cylindrical stainless steels
The annular space that concentric net cylinder is surrounded；The spherical polypropylene material of many folds inside addition between two net cylinders, control filling
Than for 20%；In anaerobic pond pool wall corresponding position, perforate sets outflow tube, and leads to anoxic pond top；
（2）Sewage is introduced into anoxic pond and provides carbon source for denitrification；Sewage flows into aeration tank and carries out Aerobic Process for Treatment and nitrifying process,
The sludge concentration of aeration tank is 2500mg/L；
（3）The mud mixture of aeration tank end is pumped to anoxic pond with 150% mixed liquid recycle ratio, it is remaining in aeration tank
Sewage introduces sedimentation basin and carries out natural sedimentation, realizes mud-water separation；
（4）Partly precipitated sludge in sedimentation basin is evacuated to by anaerobic pond with 50% return sludge ratio, regulation anaerobic pond temperature is 20
DEG C, mixing speed 120r/min, anaerobic pond dissolved oxygen concentration is 0.2mg/L；Gravity is utilized in anaerobic pond after sludge retention 5.56h
The mode of overflow flows into anoxic pond, realizes sludge reflux；Excess sludge in sedimentation basin is discharged by discharge pipeline.
Embodiment 3
Experiment sludge is derived from the aerobic section sludge that realgar sewage treatment plant of Chongqing City tradition AO techniques are normally run, seed sludge
Mixed genetic-neural network（MLSS）Anoxic zone and aeration zone are 3000mg/L, and anaerobic pond is 6000mg/L.
A kind of method for strengthening anaerobic-aerobic-precipitation-anaerobic technique mud decrement of the present invention, as shown in figure 1, including such as
Lower step：
（1）Filler device is added in the anaerobic pond of conventional A+OSA techniques, filler device is two concentric nets of cylindrical stainless steel
The annular space that cylinder is surrounded；The spherical polypropylene material of many folds inside addition between two net cylinders, controls the packing ratio to be
25%；In anaerobic pond pool wall corresponding position, perforate sets outflow tube, and leads to anoxic pond top；
（2）Sewage is introduced into anoxic pond and provides carbon source for denitrification；Sewage flows into aeration tank and carries out Aerobic Process for Treatment and nitrifying process,
The sludge concentration of aeration tank is 3000mg/L；
（3）The mud mixture of aeration tank end is pumped to anoxic pond with 200% mixed liquid recycle ratio, it is remaining in aeration tank
Sewage introduces sedimentation basin and carries out natural sedimentation, realizes mud-water separation；
（4）Partly precipitated sludge in sedimentation basin is evacuated to by anaerobic pond with 100% return sludge ratio, regulation anaerobic pond temperature is 25
DEG C, mixing speed 100r/min, anaerobic pond dissolved oxygen concentration is 0.25mg/L；It is evacuated in anaerobic pond after sludge retention 7.14h scarce
Oxygen pond top, realizes sludge reflux；Excess sludge in sedimentation basin is discharged by discharge pipeline.
Embodiment 4
Experiment sludge is derived from the aerobic section sludge that realgar sewage treatment plant of Chongqing City tradition AAO techniques are normally run, and inoculation is dirty
The mixed genetic-neural network of mud（MLSS）Anoxic zone and aeration zone are 3000mg/L, and anaerobic pond is 6000mg/L.
A kind of method for strengthening anaerobic-aerobic-precipitation-anaerobic technique mud decrement of the present invention, as shown in figure 1, including such as
Lower step：
（1）Add agitating device and filler device in the anaerobic pond of conventional A+OSA techniques, filler device be two cylinders not
Rust steel nets the annular space that cylinder is surrounded with one heart；The spherical polypropylene material of many folds inside addition, control between two net cylinders
Packing ratio is 30%；In anaerobic pond pool wall corresponding position, perforate sets outflow tube, and leads to anoxic pond top；
（2）Sewage is introduced into anoxic pond and provides carbon source for denitrification；Sewage flows into aeration tank and carries out Aerobic Process for Treatment and nitrifying process,
The sludge concentration of aeration tank is 3000mg/L；
（3）The mud mixture of aeration tank end is pumped to anoxic pond with 180% mixed liquid recycle ratio, it is remaining in aeration tank
Sewage introduces sedimentation basin and carries out natural sedimentation, realizes mud-water separation；
（4）Partly precipitated sludge in sedimentation basin is evacuated to by anaerobic pond with 80% return sludge ratio, regulation anaerobic pond temperature is 23
DEG C, mixing speed 100r/min, anaerobic pond dissolved oxygen concentration is 0.25mg/L；It is evacuated in anaerobic pond after sludge retention 8.75h scarce
Oxygen pond top, realizes sludge reflux；Excess sludge in sedimentation basin is discharged by discharge pipeline.
Embodiment 5
Experiment sludge is derived from the aerobic section sludge that realgar sewage treatment plant of Chongqing City tradition AAO techniques are normally run, and inoculation is dirty
The mixed genetic-neural network of mud（MLSS）Anoxic zone and aeration zone are 3000mg/L, and anaerobic pond is 6000mg/L.
A kind of method for strengthening anaerobic-aerobic-precipitation-anaerobic technique mud decrement of the present invention, as shown in figure 1, including such as
Lower step：
（1）Add agitating device and filler device in the anaerobic pond of conventional A+OSA techniques, filler device be two cylinders not
Rust steel nets the annular space that cylinder is surrounded with one heart；The spherical polypropylene material of many folds inside addition, control between two net cylinders
Packing ratio is 30%；In anaerobic pond pool wall corresponding position, perforate sets outflow tube, and leads to anoxic pond top；
（2）Sewage is introduced into anoxic pond and provides carbon source for denitrification；Sewage flows into aeration tank and carries out Aerobic Process for Treatment and nitrifying process,
The sludge concentration of aeration tank is 3000mg/L；
（3）The mud mixture of aeration tank end is pumped to anoxic pond with 180% mixed liquid recycle ratio, it is remaining in aeration tank
Sewage introduces sedimentation basin and carries out natural sedimentation, realizes mud-water separation；
（4）Partly precipitated sludge in sedimentation basin is evacuated to by anaerobic pond with 80% return sludge ratio, regulation anaerobic pond temperature is 23
DEG C, mixing speed 100r/min, anaerobic pond dissolved oxygen concentration is 0.25mg/L；In anaerobic pond anoxic pond is evacuated to after sludge retention 9h
Top, realizes sludge reflux；Excess sludge in sedimentation basin is discharged by discharge pipeline.
Comparative example
With conventional A+OSA techniques as a control group, experiment condition is identical, and its technological process is as shown in Figure 1.
Result of the test
Fig. 3 gives the A+OSA techniques of the embodiment of the present invention 3 and routine A+OSA technique normal operating phase sludge reduction effects
Compare, it can be seen that after anaerobic pond addition filler, mud decrement effect is significantly improved, and increase rate is about 20% or so.
Fig. 4 gives 3A+OSA of embodiment of the present invention techniques and imitated with the water treatment of routine A+OSA technique normal operating phases
Fruit compares, it can be seen that add filler in anaerobic pond, the contaminant removal capacity of A+OSA techniques, water outlet are not had a significant impact
Can be with qualified discharge.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (7)
1. a kind of method for strengthening anaerobic-aerobic-precipitation-anaerobic technique mud decrement, it is characterised in that：Comprise the following steps：
（1）Sewage is introduced into anoxic pond and provides carbon source for denitrification；Sewage flows into aeration tank and carries out Aerobic Process for Treatment and nitrifying process；
（2）The mud mixture of aeration tank end is pumped to anoxic pond with 150% ~ 200% mixed liquid recycle ratio and realizes denitrification,
Remaining sewage introduces sedimentation basin and carries out natural sedimentation in aeration tank, realizes mud-water separation；
（3）The partly precipitated sludge in sedimentation basin is evacuated in anaerobic pond, anaerobic pond provided with company with 50% ~ 100% return sludge ratio
Packing volume filling rate is 20 ~ 30% in continuous agitating device and filler device, the filler device；Adjust anaerobic pond temperature and company
Continuous agitating device rotating speed, it is 0.2 ~ 0.3mg/L to control anaerobic pond dissolved oxygen concentration；It is evacuated in anaerobic pond after 5 ~ 9h of sludge retention scarce
Oxygen pond top, realizes sludge reflux；Excess sludge in sedimentation basin is discharged by discharge pipeline.
2. the method for reinforcing anaerobic-aerobic-precipitation-anaerobic technique mud decrement according to claim 1, its feature exists
In：The sludge concentration of the aeration tank is 2500 ~ 3000mg/L.
3. the method for reinforcing anaerobic-aerobic-precipitation-anaerobic technique mud decrement according to claim 1, its feature exists
In：The filler device is the annular space that two concentric net cylinders are surrounded, and two net cylinders have the identical center of circle with anaerobic pond, and outside is straight
The larger net cylinder diameter in footpath is less than anaerobic pond diameter；Corresponding annular cover is provided with above annular space, filler is limited
In annular space.
4. the method for reinforcing anaerobic-aerobic-precipitation-anaerobic technique mud decrement according to claim 1, its feature exists
In：The filler is the spherical polypropylene or polythene material of internal many folds, and the packing material size is more than the net cylinder mesh
Diameter.
5. the method for reinforcing anaerobic-aerobic-precipitation-anaerobic technique mud decrement according to claim 1, its feature exists
In：The anaerobic pond is sealing device, and Chi Dinggaichu is provided with passage, and pool wall is provided with outflow tube, goes out stream mode and is overflow for gravity
Stream.
6. the method for reinforcing anaerobic-aerobic-precipitation-anaerobic technique mud decrement according to claim 1, its feature exists
In：Temperature is 20 ~ 25 DEG C, mixing speed 100-120r/min in the anaerobic pond.
7. the method for reinforcing anaerobic-aerobic-precipitation-anaerobic technique mud decrement according to claim 1, its feature exists
In：The anoxic pond is continuous stream running status.
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| CN201710587370.3A CN107188310B (en) | 2017-07-18 | 2017-07-18 | Method for enhancing sludge reduction in anoxic-aerobic-sedimentation-anaerobic process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170462A (en) * | 2020-03-16 | 2020-05-19 | 南京大学 | Alternate starvation micro-aerobic anaerobic coupling filler sludge side flow in-situ reduction strengthening process |
| CN112759083A (en) * | 2021-01-12 | 2021-05-07 | 中山大学 | Sludge source reduction device and sludge source reduction process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101544423A (en) * | 2009-04-29 | 2009-09-30 | 重庆大学 | A/O denitrification sewage treatment process and device capable of realizing sludge reduction |
| CN202337723U (en) * | 2011-11-21 | 2012-07-18 | 傅剑锋 | Sludge reduction treatment device |
| CN106698876A (en) * | 2016-12-19 | 2017-05-24 | 上海电力学院 | Ultrasonic/filler combined sludge decrement device and process |
-
2017
- 2017-07-18 CN CN201710587370.3A patent/CN107188310B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101544423A (en) * | 2009-04-29 | 2009-09-30 | 重庆大学 | A/O denitrification sewage treatment process and device capable of realizing sludge reduction |
| CN202337723U (en) * | 2011-11-21 | 2012-07-18 | 傅剑锋 | Sludge reduction treatment device |
| CN106698876A (en) * | 2016-12-19 | 2017-05-24 | 上海电力学院 | Ultrasonic/filler combined sludge decrement device and process |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170462A (en) * | 2020-03-16 | 2020-05-19 | 南京大学 | Alternate starvation micro-aerobic anaerobic coupling filler sludge side flow in-situ reduction strengthening process |
| CN111170462B (en) * | 2020-03-16 | 2021-05-28 | 南京大学 | Alternate starvation micro-aerobic anaerobic coupling filler sludge side flow in-situ reduction strengthening process |
| CN112759083A (en) * | 2021-01-12 | 2021-05-07 | 中山大学 | Sludge source reduction device and sludge source reduction process |
| CN112759083B (en) * | 2021-01-12 | 2022-07-08 | 中山大学 | Sludge source reduction device and sludge source reduction process |
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