CN104743657A - Use of supersonic wave in sewage treatment biological denitrification - Google Patents
Use of supersonic wave in sewage treatment biological denitrification Download PDFInfo
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- CN104743657A CN104743657A CN201310741120.2A CN201310741120A CN104743657A CN 104743657 A CN104743657 A CN 104743657A CN 201310741120 A CN201310741120 A CN 201310741120A CN 104743657 A CN104743657 A CN 104743657A
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- ultrasonic
- probe
- sewage treatment
- application according
- distance nitration
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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
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a use of supersonic wave in sewage treatment biological denitrification. A short-distance nitration process is stimulated by supersonic wave so that sewage is subjected to high efficiency denitrification. The short-distance nitration comprises that in a microbe nitration reaction, ammonia nitrogen is oxidized into nitrite and nitrate is not produced A supersonic generator probe is arranged in an aeration tank of an activated sludge process-based sewage treatment system or is connected in a sludge return pipe in series so that the short-distance nitration is stably realized by a bioreactor. The microbe screening characteristics of supersonic wave realizes stimulation of activity of nitrite bacteria and inhibits activity of nitrite bacteria. Supersonic wave is convenient for operation, has stable effects and has a wide application prospect in a sewage treatment biological denitrification technology.
Description
Technical field
The invention belongs to sewage disposal bio-denitrification technology field, specifically, relate to the application of ultrasonic wave in sewage disposal biological denitrificaion.
Background technology
Water excessive concentration can cause some algae excessive propagation, causes body eutrophication, worsens water quality and destroys aquatic ecosystem, and before being discharged into environment, realize sewage water denitrification is one of basic method solving this problem.Traditional biological denitrification process comprises nitrification and denitrification process, but due to the carbon-nitrogen ratio of domestic municipal wastewater usually lower, make traditional A
2often there is the problem that organic carbon source lacks in/O isoreactivity sludge organism denitrification process, biological denitrificaion efficiency is lower.
Short distance nitration refers to and only allows ammonia nitrogen be oxidized to nitrite and do not form the process of nitrate in the process of microorganism nitration reaction.The short-cut nitrification and denitrification technique be combined to form by partial nitrification and denitrification not only significantly can reduce the demand of biological denitrification process to organic carbon source, thus, under the limited condition of waste water organic carbon source, short-cut nitrification and denitrification technique has higher nitric efficiency than traditional biological denitrification process.
Current existing research realizes short distance nitration effect and often comprises condition control, as temperature, pH, dissolved oxygen concentration, sludge age etc.By realizing the growing environment being conducive to nitrite bacteria in the reactor, promoting the growth of nitrite bacteria, and utilizing the growth of this surround inhibition nitrobacteria simultaneously, hindering complete nitrifying process.But, utilize these conditions control long-term stability in the reactor realize short distance nitration process but comparatively difficulty.
Ultrasonic wave can produce destruction to microorganism as a kind of and cause the method for its deactivation, there is because its inactivation capacity to different microorganisms group is different the feature of selective inactivation, controlled by suitable Ultrasonic Conditions, can the exciting of nitrite bacteria activity in realization response device, and suppress the activity of nitrobacteria, thus, provide new thinking and countermeasure to realizing nitrosation process steady in a long-term in bio-reactor.
Summary of the invention
The object of this invention is to provide and a kind ofly simple and feasible realize the method that short distance nitration process stablized by bio-reactor, to solve by not easy to operate in the control methods such as temperature, pH, dissolved oxygen, sludge age and the problem of instability.
In order to realize the object of the invention, the application of ultrasonic wave provided by the invention in sewage disposal biological denitrificaion, it utilizes ultrasonic excitation short distance nitration process to carry out sewage disposal biological denitrificaion, makes the activity excitation of nitrite bacteria in bio-reactor, suppress the activity of nitrobacteria simultaneously.That is, ultrasonic generator probe be placed in the aeration tank of activated sludge process Sewage treatment systems or be series in mud return line, making bio-reactor realize stable short distance nitration process.
Scheme one is placed in the aeration tank of activated sludge process Sewage treatment systems by ultrasonic generator probe, and Probe arrangement density is every 1-3m
2arrange a probe, depth of probe scope is the 30%-70% of aeration tank available depth.
Scheme two is connected in the mud return line of activated sludge process Sewage treatment systems by ultrasonic generator probe, and will pop one's head in the pipeline of arranged in series after sludge reflux pump, returned sluge flow velocity is the scope interval≤4m of 0.1-0.8m/s, 1m≤Probe arrangement.
Aforesaid application, the operating parameter of ultrasonic generator need adjust in following scope according to actual operating mode and effect, and ultrasonic frequency 20-60kHz, single ultrasonic generator power need maintain between 30-100W, and ultrasonic time is between 2-4h.By the process effect of ultrasonic wave to active sludge, in bio-reactor, realize stable nitrite add up, excite short distance nitration process.
Aforesaid application, the operating parameter of ultrasonic generator need adjust in following scope according to actual operating mode and effect, and ultrasonic frequency 20-60kHz, single ultrasonic generator power need maintain between 30-100W, runs continuously.
The present invention is by ultrasonic excitation short distance nitration process, ultrasonic wave is utilized to have the feature of selective destruction to active sludge microorganism, ensure the suppression to nitrobacteria and deactivation on the one hand, ensure exciting nitrite bacteria activity on the other hand, in bio-reactor, realize stable short distance nitration process with this, reach wastewater efficient denitrification effect.
The remarkable advantage of the inventive method is: ultrasonic probe settle easy, Absorbable organic halogens realize bio-reactor short distance nitration process.
The present invention utilizes ultrasonic wave to the sifting property of microorganism, achieve exciting of nitrite bacteria activity in reactor, inhibit the activity of nitrobacteria simultaneously, easy to operate, effect stability, has boundless application prospect in sewage disposal bio-denitrification technology.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the first exemplary embodiment of apparatus of the present invention; Wherein, 1: water inlet, 2: water outlet; 3: activated sludge process waste disposal plant; 4: aeration devices; 5: aeration tube; 6: ultrasonic generator; 7: ultrasonic transducer; 8: horn; 9: ultrasonic probe.
Fig. 2 is the schematic diagram of the second exemplary embodiment of apparatus of the present invention; Wherein, 1: water inlet, 2: water outlet; 3: activated sludge process waste disposal plant; 4: aeration devices; 5: aeration tube; 6: ultrasonic generator; 7: duct type ultrasonic unit; 8: sludge reflux pipeline.
Embodiment
Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.If do not specialize, the conventional means that technique means used in embodiment is well known to those skilled in the art, is raw materials usedly commercial goods.
Embodiment utilizes ultrasonic excitation short distance nitration process to carry out the method for wastewater efficient denitrogenation
In the present embodiment, the ultrasonic probe of ultrasonic generator is placed in activated sludge process Sewage treatment systems (activated sludge process waste disposal plant), according to sludge quality feature, ultrasonic frequency is controlled at 20-60kHz, ultrasonic power controls at 30-100W, and ultrasonic time controls at 2-4h.
Fig. 1 is the schematic diagram of the first exemplary embodiment of apparatus of the present invention.According to the size of waste disposal plant, by ultrasonic probe reasonable layout in device, and below solid-liquid interface ultrasonic probe being inserted bio-reactor.
Reactor in Fig. 1 comprises into water 1, water outlet 2, activated sludge process waste disposal plant 3, aeration devices 4, aeration tube 5, ultrasonic generator 6, ultrasonic transducer 7, horn 8, ultrasonic probe 9.
Fig. 2 is the schematic diagram of the second exemplary embodiment of apparatus of the present invention.Ultrasonic unit is arranged on residual sludge reflux pipeline, in the process of residual sludge reflux, applies ultrasonic wave.
Reactor in Fig. 2 comprises into water 1, water outlet 2, activated sludge process waste disposal plant 3, aeration devices 4, aeration tube 5, ultrasonic generator 6, duct type ultrasonic unit 7, sludge reflux pipeline 8.
Under the ul-trasonic irradiation of Fig. 1 or Fig. 2 example, regulate Ultrasonic Conditions, choose suitable ultrasonic frequency, power and radiated time; And according to actual operating mode, as effluent quality change, sludge characteristics etc., carry out the adjustment of reactor parameter.
Although above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, all belong to the scope of protection of present invention.
Claims (6)
1. the application of ultrasonic wave in sewage disposal biological denitrificaion, is characterized in that, utilizes ultrasonic excitation short distance nitration process to carry out sewage disposal biological denitrificaion, makes the activity excitation of nitrite bacteria in bio-reactor, suppress the activity of nitrobacteria simultaneously.
2. application according to claim 1, is characterized in that, ultrasonic generator probe is placed in the aeration tank of activated sludge process Sewage treatment systems or is series in mud return line, makes bio-reactor realize stable short distance nitration process.
3. application according to claim 1 and 2, is characterized in that, be placed in the aeration tank of activated sludge process Sewage treatment systems by ultrasonic generator probe, Probe arrangement density is every 1-3m
2arrange a probe, depth of probe scope is the 30%-70% of aeration tank available depth.
4. application according to claim 1 and 2, it is characterized in that, ultrasonic generator probe is connected in the mud return line of activated sludge process Sewage treatment systems, to pop one's head in the pipeline of arranged in series after sludge reflux pump, returned sluge flow velocity is the scope interval≤4m of 0.1-0.8m/s, 1m≤Probe arrangement.
5. application according to claim 1 and 2, is characterized in that, ultrasonic frequency is 20-60kHz, and single ultrasonic generator power maintains 30-100W.
6. application according to claim 5, is characterized in that, ultrasonic time 2-4h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310741120.2A CN104743657B (en) | 2013-12-26 | 2013-12-26 | Ultrasound wave application in sewage disposal biological denitrificaion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310741120.2A CN104743657B (en) | 2013-12-26 | 2013-12-26 | Ultrasound wave application in sewage disposal biological denitrificaion |
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| CN104743657A true CN104743657A (en) | 2015-07-01 |
| CN104743657B CN104743657B (en) | 2016-11-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517640A (en) * | 2016-10-17 | 2017-03-22 | 江苏联合创业环保有限公司 | Intensified biological treatment device and method for degradation-resistant organic nitrogen-rich chemical wastewater |
| CN109368770A (en) * | 2018-10-25 | 2019-02-22 | 清华大学 | A kind of the sewerage short-cut nitration method and device ultrasound-enhanced based on effluent |
| 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 |
-
2013
- 2013-12-26 CN CN201310741120.2A patent/CN104743657B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| MIN ZHENG ET AL: "Use of low frequency and density ultrasound to stimulate partial nitrification and simultaneous nitrification and denitrification", 《BIORESOURCE TECHNOLOGY》, vol. 146, 19 July 2013 (2013-07-19) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517640A (en) * | 2016-10-17 | 2017-03-22 | 江苏联合创业环保有限公司 | Intensified biological treatment device and method for degradation-resistant organic nitrogen-rich chemical wastewater |
| CN109368770A (en) * | 2018-10-25 | 2019-02-22 | 清华大学 | A kind of the sewerage short-cut nitration method and device ultrasound-enhanced based on effluent |
| 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 |
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| CN104743657B (en) | 2016-11-02 |
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