CN109368770A - A kind of the sewerage short-cut nitration method and device ultrasound-enhanced based on effluent - Google Patents
A kind of the sewerage short-cut nitration method and device ultrasound-enhanced based on effluent Download PDFInfo
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- CN109368770A CN109368770A CN201811249876.4A CN201811249876A CN109368770A CN 109368770 A CN109368770 A CN 109368770A CN 201811249876 A CN201811249876 A CN 201811249876A CN 109368770 A CN109368770 A CN 109368770A
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- ultrasound
- effluent
- activated sludge
- sludge
- reaction unit
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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
- C02F3/02—Aerobic processes
-
- 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
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1263—Sequencing batch reactors [SBR]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The present invention relates to a kind of sewerage short-cut nitrification installation and method ultrasound-enhanced based on effluent.Described device includes: the ultrasound-enhanced processing unit of effluent being arranged in parallel positioned at the activated sludge reaction unit and activated sludge reaction unit of prevailing technology；The ultrasound-enhanced processing unit of effluent and the activated sludge reaction unit form sludge circulation；Wherein, the sludge import of the ultrasound-enhanced processing unit of the effluent is connect with the mud discharging mouth pipeline of the activated sludge reaction unit；The mud discharging mouth of the ultrasound-enhanced processing unit of effluent is connect with the sludge reflux mouth pipeline of the activated sludge reaction unit.The method of the invention makes the activity excitation of nitrite bacteria in activated sludge, inhibit the activity of nitrobacteria simultaneously, stablize short distance nitration process and enhanced biological nitrogen removal to make to realize in activated sludge reactor, while realizing the mud decrement of activated sludge reactor even not spoil disposal.
Description
Technical field
The present invention relates to a kind of methods and dress that sewerage short-cut nitrification is realized based on the ultrasound-enhanced processing of effluent activated sludge
It sets, belongs to sewage treatment enhanced biological nitrogen removal technical field.
Background technique
Short distance nitration refers to only allows ammonia nitrogen to be oxidized to nitrite without being formed during microorganism nitration reaction
The process of nitrate.Compared with traditional nitration denitrification biological denitrification process, Short-distance nitrification denitrification nitrogen removal technology, which has, is saved
Carbon source and aeration energy consumption reduce the advantages that sludge yield.
Guarantee that the key of short distance nitration process stable operation is that by activity reinforcing and the nitrite of ammonia oxidation bacteria
Oxidation bacteria is eliminated, however the low ammonia nitrogen feature of municipal wastewater brings challenges to the continuous-stable realization of short distance nitration.
Presently mainly based on the regulation to prevailing technology index (dissolved oxygen, SRT, temperature etc.), to realize that nitrosation is thin
Bacterium (such as AOB) and nitrobacteria (such as NOB) active regulation, and then realize low ammonia-nitrogen sewage short distance nitration process；But the process
Still there is also shortcomings, such as energy consumption is high, trivial operations.
Summary of the invention
In order to solve the above-mentioned technical problem, the present invention proposes that a kind of stabilization realizes continuous flow or batch-type municipal sewage short distance
The method and apparatus of nitrification.Effluent intensive treatment is carried out to the activated sludge in activated sludge reactor using ultrasonic wave, it is real
The method that existing mainstream reactor stablizes short distance nitration and sludge reduction.
The technical solution adopted in the present invention is as follows.
A kind of sewerage short-cut nitrification installation ultrasound-enhanced based on effluent, comprising: the activated sludge positioned at prevailing technology is anti-
The ultrasound-enhanced processing unit of effluent answering unit, being arranged in parallel with activated sludge reaction unit；The ultrasound-enhanced processing of effluent
Device and the activated sludge reaction unit form sludge circulation；
Wherein, the sludge of the sludge import of the ultrasound-enhanced processing unit of the effluent and the activated sludge reaction unit is arranged
Put a mouthful pipeline connection；The mud discharging mouth of the ultrasound-enhanced processing unit of effluent and the sludge of the activated sludge reaction unit
The connection of refluxing opening pipeline.
Further, the internal or external supersonic generator of the effluent ultrasound sludge strengthening and processing device.The ultrasound
Wave producer carries out interval to the sludge or continuous ultrasound is handled.
Further, it is additionally provided with upgrading unit in the ultrasound-enhanced processing unit of the effluent, be used for sludge condensation to 6-
20g/L, and realize mud-water separation, supernatant is excluded, the sludge after concentration is sent to next unit and carries out the ultrasound-enhanced place of effluent
Reason.
Further, when the prevailing technology is continuous flow sewage treatment process, the sewerage short-cut nitrification installation is also wrapped
Include device for separating mud and water (such as secondary settling tank or MBR reactor)；The water inlet of the device for separating mud and water and the activated sludge are anti-
The water outlet pipeline of unit is answered to connect；The mud discharging mouth of the device for separating mud and water and the activated sludge reaction unit pipe
Connection forms sludge circulation；Preferably, the mud discharging mouth of the device for separating mud and water passes through the ultrasound-enhanced processing of the effluent
Device is connect with the activated sludge reaction unit pipe.
Further, when the prevailing technology is batch-type sewage treatment process, the activated sludge reaction unit is SBR
Activated sludge reactor.
The present invention also provides a kind of sewerage short-cut nitration method ultrasound-enhanced based on effluent, comprising: will be in prevailing technology
After partial sludge concentration, the ultrasound-enhanced processing of effluent after activated sludge reaction cell processing, it is back to activated sludge reaction list
In member.
Further, the volume of the sludge of the ultrasound-enhanced processing of each effluent accounts for the 10%- of activated sludge total volume
100%.
Further, the concentration, which refers to, controls returnedactivatedsludge concentration in 6-20g/L.
Further, in the ultrasound-enhanced treatment process, using interval or continuous ultrasound processing mode, ultrasonic treatment
Frequency is 20-60kHz, sonication treatment time 10-1000min, sonification power 30-10000W, specific treatment conditions
Can be adjusted according to processing sludge volume, concentration and ultrasonic generator power, with adapt to continuous flow sewage treatment process or
Batch-type sewage treatment process, and energy density control is ultrasonically treated within the scope of 0.5-1.5kJ/mL.
In the present invention, the prevailing technology is continuous flow sewage treatment process or batch-type sewage treatment process.
When prevailing technology is continuous flow sewage treatment process, the water outlet of the activated sludge reaction unit enters mud-water separation
Unit, supernatant enter next unit or discharge, and returned sludge fraction it is concentrated after carry out ultrasound-enhanced processing again.
Beneficial effect obtained by the present invention is:
Sewerage short-cut nitration method of the present invention has selective destruction to active sludge microorganism using ultrasonic wave
The characteristics of, make the activity excitation of nitrite bacteria in activated sludge (such as AOB), while inhibiting the activity of nitrobacteria (such as NOB),
Stablize short distance nitration process and enhanced biological nitrogen removal to make to realize in activated sludge reactor, while realizing activated sludge reaction
The mud decrement of device or even not spoil disposal.
Device and method of the present invention are simple and feasible, save energy consumption and land used, easy to operate, effect stability, it can be achieved that
Bioreactor short distance nitration process, there is boundless application prospect in sewage treatment bio-denitrification technology, is novel
The stability contorting of short distance nitration process provides new method and thinking.
Detailed description of the invention
Fig. 1 is the schematic diagram of sewerage short-cut nitrification installation in continuous flow sewage treatment process described in embodiment 1.
Fig. 2 is the schematic diagram of sewerage short-cut nitrification installation in SBR batch-type sewage treatment process as described in example 2.
In figure: 1, intaking；2, activated sludge reactor (SBR activated sludge reactor)；3, reactor activity sludge goes out to flow
Pipeline；4, sludge reflux pipeline after handling；5, the ultrasound-enhanced processing unit of effluent；6, supersonic generator；7, it is discharged；8, muddy water
Separative unit；9, mud-water separation unit thickened sludge drainage line；10, mud-water separation unit sludge reflux pipeline after handling.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Unless otherwise specified, the conventional means that technological means used in embodiment is well known to those skilled in the art,
Raw materials used is commercial goods.
Embodiment 1 strengthens ultrasonication activated sludge using effluent and realizes that mainstream (continuous flow) short distance nitration process carries out
The device of wastewater efficient denitrogenation
The present embodiment provides a kind of sewerage short-cut nitrification installation ultrasound-enhanced based on effluent, as shown in Figure 1, comprising: living
Property sludge reaction unit, and constitute with the activated sludge reaction unit the internal or external supersonic generator of sludge circulation
The ultrasound-enhanced processing unit of effluent；
Wherein, the sludge of the sludge import of the ultrasound-enhanced processing unit of the effluent and the activated sludge reaction unit is arranged
Put a mouthful pipeline connection；The mud discharging mouth of the ultrasound-enhanced processing unit of effluent and the sludge of the activated sludge reaction unit
The connection of refluxing opening pipeline.
The internal or external supersonic generator of the effluent ultrasound sludge strengthening and processing device.The supersonic generator pair
The sludge carries out interval or continuous ultrasound processing.
Upgrading unit is additionally provided in the ultrasound-enhanced processing unit of effluent.
The sewerage short-cut nitrification installation further includes mud-water separation unit (such as secondary settling tank or MBR reactor)；The muddy water
The water inlet of separative unit is connect with the water outlet pipeline of the activated sludge reaction unit；The sludge of the mud-water separation unit
Discharge outlet is connect by the ultrasound-enhanced processing unit of the effluent with the activated sludge reaction unit pipe.
Embodiment 2 strengthens ultrasonication activated sludge using effluent and realizes that mainstream (continuous flow) short distance nitration process carries out
The method of wastewater efficient denitrogenation
The present embodiment provides a kind of sewerage short-cut nitration method ultrasound-enhanced based on effluent, the specific steps are as follows:
(1) the amount of activated sludge in continuous flow sewage treatment process in activated sludge reaction unit (is accounted for into activated sludge
The 50% of total volume) it shunts, it is concentrated to activated sludge is shunted, until concentration control is in 6-8g/L；
(2) intensive treatment is carried out to the shunting activated sludge after concentration using ultrasonic wave；During the intensive treatment, adopt
It is 40kHz, sonication treatment time 60min with interval or continuous ultrasound processing, ultrasonic treatment frequency, sonification power is
100W, ultrasonic treatment energy density control is within the scope of 0.7kJ/mL；
(3) the shunting activated sludge after intensive treatment is flowed back into again in activated sludge reaction unit；
(4) water outlet of the activated sludge reaction unit is separated through mud-water separation unit (secondary settling tank or MBR reactor), on
Clear liquid discharge, and activated sludge fraction is concentrated and carries out ultrasound-enhanced processing.
Embodiment 3 strengthens ultrasonication activated sludge using effluent and realizes that mainstream (batch-type) short distance nitration process carries out
The device of wastewater efficient denitrogenation
The present embodiment provides a kind of sewerage short-cut nitrification installation ultrasound-enhanced based on effluent, as shown in Figure 2, comprising: living
Property sludge reaction unit, and it is super with effluent that the activated sludge reaction unit constitutes the built-in supersonic generator of sludge circulation
Sound strengthening and processing device；
Wherein, the sludge of the sludge import of the ultrasound-enhanced processing unit of the effluent and the activated sludge reaction unit is arranged
Put a mouthful pipeline connection；The mud discharging mouth of the ultrasound-enhanced processing unit of effluent and the sludge of the activated sludge reaction unit
The connection of refluxing opening pipeline.
The internal or external supersonic generator of the effluent ultrasound sludge strengthening and processing device.The supersonic generator pair
The sludge carries out interval or continuous ultrasound processing.
Upgrading unit is additionally provided in the ultrasound-enhanced processing unit of effluent.
The activated sludge reaction unit is SBR activated sludge reactor.
Embodiment 4 strengthens ultrasonication activated sludge using effluent and realizes that mainstream (batch-type) short distance nitration process carries out
The method of wastewater efficient denitrogenation
The present embodiment provides a kind of sewerage short-cut nitration method ultrasound-enhanced based on effluent, the specific steps are as follows:
(1) by part activated sludge (it is total to account for activated sludge in SBR activated sludge reactor in batch-type sewage treatment process
The 50% of volume) it shunts, it is concentrated to activated sludge is shunted, until concentration is 6-8g/L；
(2) intensive treatment is carried out to the shunting activated sludge after concentration using ultrasonic wave；During the intensive treatment, adopt
It is 40kHz, sonication treatment time 60min with interval or continuous ultrasound processing, ultrasonic treatment frequency, sonification power is
100W, ultrasonic treatment energy density control is within the scope of 0.7kJ/mL；
(3) the shunting activated sludge after intensive treatment is flowed back into again in activated sludge reaction unit.
Compliance test result
Comparative example 1: with the continuous flow sewage treatment process of embodiment 2, difference is not to be ultrasonically treated；
Comparative example 2: with the SBR batch-type sewage treatment process of embodiment 4, difference is not to be ultrasonically treated；
The treatment effect of comparing embodiment 2 and comparative example 1, embodiment 4 and comparative example 2, is shown in Table 1.
Ultrasonic treatment front and back Contrast on effect in 1 continuous flow of table and SBR batch-type sewage treatment process
As shown in Table 1, after using ultrasonic treatment, spoil disposal, nitrite accumulation rate are not obviously improved in two kinds of techniques；?
Under the premise of guaranteeing abundant nitrification effect, nitrate anion significantly reduced, nitrite anions then different degrees of raising.As it can be seen that using this hair
The bright short-range nitrifying device and method, can be such that the activity of nitrite bacteria in activated sludge (such as AOB) keeps, inhibit simultaneously
The activity of nitrobacteria (such as NOB), to make to realize that stablizing short distance nitration process and enhanced biological takes off in activated sludge reactor
Nitrogen, while realizing activated sludge reactor not spoil disposal.
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, fall within the scope of the claimed invention without departing from theon the basis of the spirit of the present invention.
Claims (10)
1. a kind of sewerage short-cut nitrification installation ultrasound-enhanced based on effluent characterized by comprising positioned at the work of prevailing technology
Property sludge reaction unit, the ultrasound-enhanced processing unit of effluent that is arranged in parallel with activated sludge reaction unit；
The ultrasound-enhanced processing unit of effluent and the activated sludge reaction unit form sludge circulation；Wherein, the effluent
The sludge import of ultrasound-enhanced processing unit is connect with the mud discharging mouth pipeline of the activated sludge reaction unit；The effluent
The mud discharging mouth of ultrasound-enhanced processing unit is connect with the sludge reflux mouth pipeline of the activated sludge reaction unit.
2. sewerage short-cut nitrification installation according to claim 1, which is characterized in that the effluent ultrasound sludge intensive treatment
The internal or external supersonic generator of device.
3. sewerage short-cut nitrification installation according to claim 1 or 2, which is characterized in that the ultrasound-enhanced processing of effluent
Upgrading unit is additionally provided in device.
4. sewerage short-cut nitrification installation according to claim 1 to 3, which is characterized in that when the prevailing technology is to connect
Afterflow sewage treatment process, the sewerage short-cut nitrification installation further include the water outlet pipeline with the activated sludge reaction unit
The device for separating mud and water of connection；
Wherein, the mud discharging mouth of the device for separating mud and water is connect with the activated sludge reaction unit pipe, forms sludge
Circulation；Preferably, the mud discharging mouth of the device for separating mud and water passes through the ultrasound-enhanced processing unit of the effluent and the work
Property sludge reaction unit pipe connection.
5. sewerage short-cut nitrification installation according to claim 4, which is characterized in that when the prevailing technology is that batch-type is dirty
Water treatment technology, the activated sludge reaction unit are SBR activated sludge reactor.
6. a kind of sewerage short-cut nitration method ultrasound-enhanced based on effluent characterized by comprising will be active in prevailing technology
After partial sludge concentration, the ultrasound-enhanced processing of effluent after sludge reaction cell processing, it is back in activated sludge reaction unit.
7. sewerage short-cut nitration method according to claim 6, which is characterized in that the institute of the ultrasound-enhanced processing of each effluent
The volume for stating sludge accounts for the 10%-100% of activated sludge total volume；
And/or the concentration refers to the control of returnedactivatedsludge concentration in 6-20g/L.
8. sewerage short-cut nitration method according to claim 6 or 7, which is characterized in that the ultrasound-enhanced treatment process
In, using interval or continuous ultrasound processing mode；
Preferably, the ultrasonic treatment energy density control is within the scope of 0.5-1.5kJ/mL.
9. according to sewerage short-cut nitration method as claimed in claim 6 to 8, which is characterized in that the prevailing technology is continuous
Flow sewage treatment process or batch-type sewage treatment process.
10. sewerage short-cut nitration method according to claim 9, which is characterized in that when prevailing technology is continuous flow sewage
The water outlet for the treatment of process, the activated sludge reaction unit must enter mud-water separation unit, and supernatant enters next unit or row
Put, and returned sludge it is concentrated after carry out ultrasound-enhanced processing again.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078211A (en) * | 2019-04-28 | 2019-08-02 | 江西理工大学 | A method of short distance nitration stability is maintained using low-intensity ultrasonic |
| CN110759467A (en) * | 2019-11-21 | 2020-02-07 | 北京工业大学 | Device and method for quickly starting and maintaining shortcut nitrification of municipal sewage based on parachlorometadimethylphenol |
| CN111977780A (en) * | 2019-05-23 | 2020-11-24 | 清华大学 | Municipal sewage treatment system and sewage treatment method thereof |
| CN112624491A (en) * | 2020-11-16 | 2021-04-09 | 广州大学 | Sewage nitrosation device and sewage nitrosation method |
| CN114956316A (en) * | 2022-06-17 | 2022-08-30 | 江西理工大学 | Method for improving heavy metal impact resistance of short-cut nitrified sludge |
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| CN104743657A (en) * | 2013-12-26 | 2015-07-01 | 清华大学 | Use of supersonic wave in sewage treatment biological denitrification |
| CN108264186A (en) * | 2017-12-29 | 2018-07-10 | 乐山海天水务有限公司 | A kind of method recycled to nitric wastewater |
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| EP0808803A1 (en) * | 1996-05-23 | 1997-11-26 | Telsonic AG | Process and device for continuous disintegration of activated sludge |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078211A (en) * | 2019-04-28 | 2019-08-02 | 江西理工大学 | A method of short distance nitration stability is maintained using low-intensity ultrasonic |
| CN110078211B (en) * | 2019-04-28 | 2021-08-31 | 江西理工大学 | Method for maintaining short-range nitrification stability by using low-intensity ultrasonic waves |
| CN111977780A (en) * | 2019-05-23 | 2020-11-24 | 清华大学 | Municipal sewage treatment system and sewage treatment method thereof |
| CN110759467A (en) * | 2019-11-21 | 2020-02-07 | 北京工业大学 | Device and method for quickly starting and maintaining shortcut nitrification of municipal sewage based on parachlorometadimethylphenol |
| CN110759467B (en) * | 2019-11-21 | 2022-01-28 | 北京工业大学 | Device and method for quickly starting and maintaining shortcut nitrification of municipal sewage based on parachlorometadimethylphenol |
| CN112624491A (en) * | 2020-11-16 | 2021-04-09 | 广州大学 | Sewage nitrosation device and sewage nitrosation method |
| CN114956316A (en) * | 2022-06-17 | 2022-08-30 | 江西理工大学 | Method for improving heavy metal impact resistance of short-cut nitrified sludge |
| CN114956316B (en) * | 2022-06-17 | 2023-12-08 | 江西理工大学 | Method for improving heavy metal impact resistance of short-cut nitrified sludge |
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Application publication date: 20190222 |