CN106630150B - Drop oxygen-enriched oxygen sludge bed process and its wastewater treatment method of declining - Google Patents
Drop oxygen-enriched oxygen sludge bed process and its wastewater treatment method of declining Download PDFInfo
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- CN106630150B CN106630150B CN201710042346.1A CN201710042346A CN106630150B CN 106630150 B CN106630150 B CN 106630150B CN 201710042346 A CN201710042346 A CN 201710042346A CN 106630150 B CN106630150 B CN 106630150B
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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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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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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- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention belongs to technical field of sewage, and in particular to a kind of micro- oxygen biological treatment and its method for handling sewage.The problems such as the present invention is to solve existing wastewater processing technology is incomplete, and energy consumption is high, operating cost height, complex process.Technique is made of micro- oxygen Sludge Bed, filler, drop drainage trough, heavy-oxygen-enriched water backflow pool, return pipe, reflux pump, check-valves, water inlet pipe, sedimentation basin, outlet pipe and excess sludge delivery pipe.Method: micro- oxygen environment is conducive to aerobic bacteria, anaerobic bacteria and facultative anaerobic bacteria mutualism, these synergistic bacteriums are metabolized polluter, again since oxygen participates in biochemical reaction, oxidation can occur simultaneously with reduction in system, so that anaerobic respiration and aerobic respiration, nitrification and denitrification coexist in processing system, system is oxygen-enriched by the progress of drop process, to maintain the oxygen source in Sludge Bed.Compact layout of the present invention saves running space and operating cost, has applications well prospect in terms of handling waste water.
Description
Technical field
The invention belongs to technical field of sewage, and in particular at drop oxygen-enriched decline oxygen sludge bed process and its waste water
Reason method.
Background technique
Wastewater treatment in China factory largely uses the processing mode using aerobic activated sludge process as core, and which is in waste water
Certain effect is played in terms of denitrogenation, but there are still many problems.Such as: ammonia nitrogen nitrifies completely need to consume a large amount of oxygen, air blast
The aeration energy consumption of aerating system can account for the 40%~50% of water factory's total energy consumption, and energy consumption of reaction is very high；To low C/N than waste water, need
Additional organic carbon source；Process flow is long, and capital expenditure is high, takes up a large area.Although anaerobic reaction has operating cost lower,
The advantages of can produce the methane gas that the energy is provided, but anaerobic environment is maintained, the building equipment investment of early period is big, and anaerobism
Reaction rate is slower, and water outlet needs subsequent processing.And in the mass concentration of dissolved oxygen in the micro- of the mg/L of 0.3 mg/L~1.0
Under oxygen environment, aerobic bacteria, anaerobic bacteria and facultative anaerobic bacteria mutualism, these synergistic bacteriums are metabolized polluter, exist simultaneously
The reactions such as short distance nitration and denitrification, Simultaneous Nitrification-Denitrification, oxidative degradation are, it can be achieved that organic matter, NH4 +The pollutants such as-N
Common removal.Therefore micro- oxygen water treatment technology can be applied to organic matter degradation and denitrogenation processing；And the technology significantly reduces
Aeration quantity, and higher equipment requirement is not needed, it is a kind of energy-efficient technology.
Currently, technique representative in micro- oxygen technology has SHARON-ANAMMOX technique, OLAND technique, CANON work
Skill etc., the aeration mode of these techniques have the shortcomings that aeration is uneven and energy consumption, the present invention use drop oxygen-enriched reflux muddy water
Technique controls the dissolved oxygen concentration in reflux muddy water by control reflux ratio, can reach effectively control dissolved oxygen concentration and low
The effect of energy consumption.It has important practical significance in wastewater treatment practical application.
Summary of the invention
It is more incomplete than the processing technique of waste water than with general C/N for low C/N that the present invention is to solve the prior arts, deposits
Complex process, capital expenditure is big, energy consumption is high, processing cost is high the problems such as, the oxygen-enriched oxygen Sludge Bed work that declines that is related to dropping is provided
Skill and its wastewater treatment method.
The oxygen-enriched oxygen sludge bed process that declines of drop of the present invention adopts the following technical solutions realization: drop is oxygen-enriched
Decline oxygen sludge bed process, including micro- oxygen Sludge Bed, filler, drop drainage trough, oxygen-enriched muddy water backflow pool, the reflux of oxygen-enriched muddy water
Pipe, reflux pump, check-valves, micro- oxygen Sludge Bed water inlet pipe, sedimentation basin, sedimentation basin outlet pipe and excess sludge delivery pipe composition；Institute
State micro- oxygen Sludge Bed, filler drop drainage trough, oxygen-enriched muddy water backflow pool, oxygen-enriched muddy water return pipe, reflux pump, check-valves, micro- oxygen
Sludge Bed water inlet pipe constitutes a processing unit；The processing unit is placed in sedimentation basin, can be set in same sedimentation basin one or
Multiple processing units；Micro- oxygen Sludge Bed is arranged in vertical column and top opening, is internally provided with filler, top opening
Border be equipped with multiple drop drainage troughs to external radiation, bottom be equipped with heavy-oxygen-enriched water refluxing opening and water inlet, respectively with oxygen-enriched mud
Water return pipe is connected with micro- oxygen Sludge Bed water inlet pipe；The oxygen-enriched muddy water backflow pool setting is in micro- oxygen Sludge Bed bottom outer ring, richness
The width of oxygen muddy water backflow pool must assure that the top water outlet of micro- oxygen Sludge Bed is all fallen to wherein along drop drainage trough, bottom
Portion is equipped with heavy-oxygen-enriched water refluxing opening and is connected with oxygen-enriched muddy water return pipe, and periphery is equipped with overflow weir；On the oxygen-enriched muddy water return pipe
Equipped with reflux pump and check-valves；The sedimentation basin is spoke manifold formula, and is equipped with sedimentation basin outlet pipe and excess sludge delivery pipe,
Overflow weir open height is slightly below the overflow weir open height of oxygen-enriched muddy water backflow pool.
The working principle of the oxygen-enriched oxygen sludge bed process that declines of drop of the present invention: waste water passes through micro- oxygen Sludge Bed water inlet pipe
Enter Sludge Bed from micro- oxygen Sludge Bed bottom, when by Sludge Bed base sludge layer, the sludge of sludge blanket is to the suspension in waste water
While object is retained, removal COD and NH is acted on by microbial metabolism4 +The polluters such as-N, water outlet pass through micro- oxygen sludge
The cyclic annular radiation drop drainage trough at the top of bed falls to oxygen-enriched muddy water backflow pool naturally and realizes oxic process, it is oxygen-enriched after muddy water
Phegma Dissolved Oxygen concentration Control is mixed in 0.3mg/L ~ 1mg/L, in micro- oxygen environment aerobic bacteria, anaerobic bacteria and the facultative anaerobic bacteria
Mutualism, these synergistic bacteriums are metabolized polluter, realize organic matter, NH4 +The common removal of the pollutants such as-N.
It is of the present invention oxygen-enriched to decline oxygen sludge bed process and its wastewater treatment method is achieved in that using dropping
Using oxygen-enriched decline oxygen sludge bed process and its wastewater treatment method of dropping, for handling low C/N than waste water, the method includes
Following steps:
Waste water is entered wherein by water inlet pipe from the bottom of micro- oxygen Sludge Bed, by oxygen flora micro- in packing layer processing waste water
Pollutant, treated waste water from the drop drainage trough at the top of micro- oxygen Sludge Bed fall to naturally heavy-oxygen-enriched water backflow pool realize
Oxic process, for most of oxygen-enriched rear waste water through oxygen-enriched muddy water return pipe, being back to micro- oxygen Sludge Bed by reflux pump pressurization is wherein
Micro- oxygen flora provide oxygen, reflux ratio be 5:1 ~ 30:1；The oxygen-enriched waste water outflow of redundance is into sedimentation basin, then through sedimentation basin
Overflow is discharged by sedimentation basin outlet pipe, obtains qualified water outlet, and the excess sludge of the precipitating bottom of pond portion is discharged by excess sludge
Pipe discharge；
The microorganism of micro- oxygen Sludge Bed culture has good physicochemical structure and settling property, and micro- oxygen environment is conducive to aerobic
Bacterium, anaerobic bacteria and facultative anaerobic bacteria mutualism, these synergistic bacteriums are metabolized polluter, and since oxygen participates in biochemical reaction,
Therefore, oxidation can occur simultaneously with reduction in system, so that anaerobic respiration and aerobic respiration, nitrification and denitrification coexist in
In processing system, micro-oxygen conditions are tieed up by the muddy water oxic process of drop drainage trough and the oxygen-enriched muddy water backflow pool of annular in Sludge Bed
It holds.
Beneficial effects of the present invention:
It, can cost-effective synchronous removal organic matter, NH 1. the present invention is used for wastewater treatment4 +The pollutants such as-N and TN, it is raw
Object denitrogenation is not required to additional carbon, and processing cost is low, before having applications well in terms of handling low C/N ratio and general C/N than waste water
Scape.
2. the present invention uses micro-oxygen conditions, drop oxygen-enriched mode, is not necessarily to aerating system, and operation energy consumption is low.
3. technique designed by the present invention is drop oxygen-enriched reflux mode, can effectively be controlled by way of controlling reflux ratio
Dissolved oxygen concentration processed, oxygen-enriched uniform and dissolved oxygen concentration are stablized.
4. the present invention is applied widely, structure is more compact in layout, saves running space and operating cost, takes up an area
Few, production, installation, maintenance are convenient, with low investment, are suitble to large-scale production.
Detailed description of the invention
The structural schematic diagram (processing unit) of Fig. 1 oxygen-enriched oxygen sludge bed process that declines of drop of the present invention.
The structural schematic diagram (multiple processing units) of Fig. 2 oxygen-enriched oxygen sludge bed process that declines of drop of the present invention.
The micro- oxygen Sludge Bed of 1-, 2- filler, 3- drop drainage trough, the oxygen-enriched muddy water backflow pool of 4-, the oxygen-enriched muddy water return pipe of 5-, 6-
Reflux pump, 7- check-valves, the micro- oxygen Sludge Bed water inlet pipe of 8-, 9- sedimentation basin, 10- sedimentation basin outlet pipe, the discharge of 11- excess sludge
Pipe.
Specific embodiment
Micro- 1 top of oxygen Sludge Bed is cylinder, and lower part is cone.
Drop drainage trough 3 is channel flow tubulose sink, and multiple drop drainage troughs 3 are equidistantly located on micro- oxygen Sludge Bed 1
Top opening, adjacent drop drainage trough 3 are spaced 10 °.
The oxygen-enriched muddy water backflow pool 4 is the shallow pond with overflow weir, and width is slightly larger than drop 3 length of drainage trough.
The reflux pump 6 can control dissolved oxygen concentration in micro- oxygen Sludge Bed 1 by oxygen-enriched muddy water reflux ratio.
The technical solution of the present invention is not limited to the following list:
Illustrate that present embodiment, present embodiment drop the oxygen-enriched oxygen sludge bed process that declines by micro- oxygen sludge in conjunction with Fig. 1 and 2
Bed 1, filler 2, drop drainage trough 3, oxygen-enriched muddy water backflow pool 4, oxygen-enriched muddy water return pipe 5, reflux pump 6, check-valves 7, micro- oxygen are dirty
Mud bed water inlet pipe 8, sedimentation basin 9, sedimentation basin outlet pipe 10 and excess sludge delivery pipe 11 form；Micro- oxygen Sludge Bed 1, filler
2, drainage trough 3, oxygen-enriched muddy water backflow pool 4, oxygen-enriched muddy water return pipe 5, reflux pump 6, check-valves 7, the micro- oxygen Sludge Bed of dropping are intake
Pipe 8 constitutes a processing unit；The processing unit is placed in sedimentation basin 9, can set one or more processing in same sedimentation basin 9
Unit；Micro- oxygen Sludge Bed 1 is arranged in vertical column and top opening, is internally provided with filler 2, top opening border is set
There are multiple drop drainage troughs 3 to external radiation, bottom is equipped with heavy-oxygen-enriched water refluxing opening and water inlet, flows back respectively with oxygen-enriched muddy water
Pipe 5 is connected with micro- oxygen Sludge Bed water inlet pipe 8；Oxygen-enriched muddy water backflow pool 4 setting is oxygen-enriched in micro- 1 bottom outer ring of oxygen Sludge Bed
The width of muddy water backflow pool must assure that the top water outlet of micro- oxygen Sludge Bed 1 is all fallen to wherein along drop drainage trough 3, bottom
Portion is equipped with heavy-oxygen-enriched water refluxing opening and is connected with oxygen-enriched muddy water return pipe 5, and periphery is equipped with overflow weir；The oxygen-enriched muddy water return pipe 5
It is equipped with reflux pump 6 and check-valves 7；The sedimentation basin 9 is spoke manifold formula, and is equipped with sedimentation basin outlet pipe 10 and excess sludge
Delivery pipe 11, overflow weir open height are slightly below the overflow weir open height of oxygen-enriched muddy water backflow pool 4.
Operation method one: being specifically according to the following steps using method of the low C/N than waste water is handled described in specific embodiment
It carries out:
Waste water is entered from the bottom of micro- oxygen Sludge Bed 1 wherein, by oxygen bacterium micro- in filler 2 by micro- oxygen Sludge Bed water inlet pipe 8
Pollutant in group's processing waste water, treated waste water fall to richness from the drop drainage trough 3 at micro- 1 top of oxygen Sludge Bed naturally
Oxygen muddy water backflow pool 4 realizes that oxic process, most of oxygen-enriched rear waste water are pressurizeed by reflux pump 6 and flowed back through oxygen-enriched muddy water return pipe 5
Oxygen, reflux ratio 20:1 are provided to micro- oxygen Sludge Bed 1 for micro- oxygen flora therein；The oxygen-enriched waste water outflow of redundance extremely precipitates
It in pond 9, then through 9 overflow of sedimentation basin, is discharged by sedimentation basin outlet pipe 10, obtains qualified water outlet, the residue of 9 bottom of sedimentation basin
Sludge is discharged by excess sludge delivery pipe 11；
Operation method two: following step is specifically pressed than the method for waste water using the general C/N of processing described in specific embodiment
It is rapid to carry out:
General C/N removes hydraulic detention time 12h than waste water, and reflux ratio is outside 30:1, other steps with operation method one
It is identical.
Using following embodiment verifying the invention has the advantages that:
Embodiment one: being illustrated with reference to Fig. 1 the present embodiment, and the present embodiment handles low C/ using specific embodiment described device
The specific method is as follows than waste water by N:
Low C/N is entered from the bottom of micro- oxygen Sludge Bed 1 wherein, by 2 layers of filler than waste water by micro- oxygen Sludge Bed water inlet pipe 8
In pollutant in micro- oxygen flora processing waste water, the drop drainage trough 3 at treated waste water from micro- 1 top of oxygen Sludge Bed is natural
It falls to oxygen-enriched muddy water backflow pool 4 and realizes oxic process, most of oxygen-enriched rear waste water is through oxygen-enriched muddy water return pipe 5, by reflux pump 6
Pressurization is back to micro- oxygen Sludge Bed 1 and provides oxygen, reflux ratio 20:1, hydraulic detention time 15h for micro- oxygen flora therein；
The oxygen-enriched waste water outflow of redundance is discharged by sedimentation basin outlet pipe 10 into sedimentation basin 9, then through 9 overflow of sedimentation basin, obtains qualification
The excess sludge of water outlet, 9 bottom of sedimentation basin is discharged by excess sludge delivery pipe 11；
Sludge used in the sludge blanket of micro- 1 bottom of oxygen Sludge Bed described in above scheme is that secondary sedimentation tank of sewage treatment work is dirty
Mud.
Water quality indicator of the low C/N than waste water described in above scheme are as follows: COD 230mg/L, NH4 +- N 200mg/L, TN
210mg/L。
Treatment effect are as follows: COD removal rate >=80%, NH4 +- N removal rate >=94%, TN removal rate >=77%.
Embodiment two: being illustrated with reference to Fig. 1 the present embodiment, and the present embodiment is handled general using specific embodiment described device
The specific method is as follows than waste water by C/N:
General C/N is entered from the bottom of micro- oxygen Sludge Bed 1 wherein, by filler 2 than waste water by micro- oxygen Sludge Bed water inlet pipe 8
Pollutant in layer in micro- oxygen flora processing waste water, treated waste water from the drop drainage trough 3 at micro- 1 top of oxygen Sludge Bed from
It so falls to oxygen-enriched muddy water backflow pool 4 and realizes oxic process, most of oxygen-enriched rear waste water is through oxygen-enriched muddy water return pipe 5, by flowing back
6 pressurization of pump is back to micro- oxygen Sludge Bed 1 and provides oxygen, reflux ratio 30:1 for micro- oxygen flora therein, and hydraulic detention time is
12h；The oxygen-enriched waste water outflow of redundance is discharged by sedimentation basin outlet pipe 10, is obtained into sedimentation basin 9, then through 9 overflow of sedimentation basin
The excess sludge of qualification water outlet, 9 bottom of sedimentation basin is discharged by excess sludge delivery pipe 11；
Sludge used in the sludge blanket of micro- 1 bottom of oxygen Sludge Bed described in above scheme is that secondary sedimentation tank of sewage treatment work is dirty
Mud.
Water quality indicator of the general C/N than waste water described in above scheme are as follows: COD 450mg/L, NH4 +- N 47mg/L, TN
70mg/L。
Treatment effect are as follows: COD removal rate >=90%, NH4 +- N removal rate >=90%, TN removal rate >=80%.
Claims (6)
1. drop the oxygen-enriched oxygen sludge bed process that declines, which is characterized in that including micro- oxygen Sludge Bed (1), filler (2), drop drainage
Slot (3), oxygen-enriched muddy water backflow pool (4), oxygen-enriched muddy water return pipe (5), reflux pump (6), check-valves (7), the water inlet of micro- oxygen Sludge Bed
Manage (8), sedimentation basin (9), sedimentation basin outlet pipe (10) and excess sludge delivery pipe (11) composition；Micro- oxygen Sludge Bed (1) is filled out
Expect (2), drop drainage trough (3), oxygen-enriched muddy water backflow pool (4), oxygen-enriched muddy water return pipe (5), reflux pump (6), check-valves (7),
Micro- oxygen Sludge Bed water inlet pipe (8) constitutes a processing unit；The processing unit is placed in sedimentation basin (9), same sedimentation basin (9)
It is interior to set one or more processing units；Micro- oxygen Sludge Bed (1) is arranged in vertical column and top opening, is internally provided with
Filler (2), top opening border are equipped with multiple drop drainage troughs (3) to external radiation, and bottom is equipped with heavy-oxygen-enriched water refluxing opening
And water inlet, it is connected respectively with oxygen-enriched muddy water return pipe (5) and micro- oxygen Sludge Bed water inlet pipe (8)；The oxygen-enriched muddy water backflow pool
(4) it is arranged in micro- oxygen Sludge Bed (1) bottom outer ring, the width of oxygen-enriched muddy water backflow pool (4) must assure that micro- oxygen Sludge Bed (1)
Top water outlet along drop drainage trough (3) all falls to wherein, oxygen-enriched muddy water backflow pool (4) bottom be equipped with heavy-oxygen-enriched water refluxing opening with
Oxygen-enriched muddy water return pipe (5) is connected, and periphery is equipped with overflow weir；The oxygen-enriched muddy water return pipe (5) be equipped with reflux pump (6) and
Check-valves (7)；The sedimentation basin (9) is spoke manifold formula, and is equipped with sedimentation basin outlet pipe (10) and excess sludge delivery pipe
(11), overflow weir open height is slightly below the overflow weir open height of oxygen-enriched muddy water backflow pool (4).
2. the oxygen-enriched oxygen sludge bed process that declines of drop according to claim 1, it is characterised in that micro- oxygen Sludge Bed (1)
Top is cylinder, and lower part is cone.
3. the oxygen-enriched oxygen sludge bed process that declines of drop according to claim 1, it is characterised in that the drop drainage trough (3)
For channel flow tubulose sink, multiple drops drainage trough (3) are equidistantly located on the top opening of micro- oxygen Sludge Bed (1), adjacent to fall
Water drainage trough (3) is spaced 10 °.
4. the oxygen-enriched oxygen sludge bed process that declines of drop according to claim 1, it is characterised in that the oxygen-enriched muddy water reflux
Pond (4) is the shallow pond with overflow weir, and width is greater than drop drainage trough (2) length.
5. the oxygen-enriched oxygen sludge bed process that declines of drop according to claim 1, it is characterised in that the reflux pump (6), it can
The interior dissolved oxygen concentration of micro- oxygen Sludge Bed (1) is controlled by oxygen-enriched muddy water reflux ratio.
6. using the oxygen-enriched oxygen sludge bed process that declines of drop described in claim 1, the specific method is as follows when handling waste water:
Waste water is entered wherein by water inlet pipe (8) from the bottom of micro- oxygen Sludge Bed (1), is handled by oxygen flora micro- in filler (2) layer
Pollutant in waste water, treated waste water fall to oxygen-enriched naturally from the drop drainage trough (3) at the top of micro- oxygen Sludge Bed (1)
Muddy water backflow pool (4) realizes that oxic process, most of oxygen-enriched rear waste water are pressurizeed through oxygen-enriched muddy water return pipe (5) by reflux pump (6)
It is back to micro- oxygen Sludge Bed (1) and provides oxygen for micro- oxygen flora therein, reflux ratio is 5:1 ~ 30:1；The oxygen-enriched waste water of redundance
Overflow is discharged by sedimentation basin outlet pipe (10) into sedimentation basin (9), then through sedimentation basin (9) overflow, obtains qualified water outlet, described
The excess sludge of sedimentation basin (9) bottom is discharged by excess sludge delivery pipe (11).
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| CN107417040A (en) * | 2017-06-21 | 2017-12-01 | 安徽普氏生态环境工程有限公司 | A kind of sewage disposal system and its sewage water treatment method |
| CN108101214A (en) * | 2017-12-22 | 2018-06-01 | 太原理工大学 | A kind of up-flow anaerobic sludge blanket-outer circulation drop oxygen-enriched reflux declines the technique of oxygen Sludge Bed Treating Municipal Sewage |
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| CN110342634A (en) * | 2019-07-05 | 2019-10-18 | 太原理工大学 | The micro- oxygen sludge bed process of membrane aeration biomembrane and its wastewater treatment method |
| CN113387445B (en) * | 2021-07-07 | 2022-06-07 | 太原理工大学 | Hydrolytic acidification-solar power supply-microalgae aeration-coupled reflux oxygen supply micro-aerobic sludge bed combination device and application thereof |
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