CN115557610B - Method for realizing anaerobic ammoxidation granulation and synchronous denitrification and dephosphorization by shortening precipitation time in stages - Google Patents
Method for realizing anaerobic ammoxidation granulation and synchronous denitrification and dephosphorization by shortening precipitation time in stages Download PDFInfo
- Publication number
- CN115557610B CN115557610B CN202211350286.7A CN202211350286A CN115557610B CN 115557610 B CN115557610 B CN 115557610B CN 202211350286 A CN202211350286 A CN 202211350286A CN 115557610 B CN115557610 B CN 115557610B
- Authority
- CN
- China
- Prior art keywords
- stage
- time
- shortening
- anaerobic
- aerobic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001556 precipitation Methods 0.000 title claims abstract description 23
- 238000004904 shortening Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005469 granulation Methods 0.000 title claims abstract description 19
- 230000003179 granulation Effects 0.000 title claims abstract description 19
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 50
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 40
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 37
- 239000011574 phosphorus Substances 0.000 claims abstract description 37
- 230000003647 oxidation Effects 0.000 claims abstract description 30
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 30
- 239000010802 sludge Substances 0.000 claims abstract description 26
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 25
- 238000004062 sedimentation Methods 0.000 claims abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000010865 sewage Substances 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 238000005273 aeration Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 7
- 230000003203 everyday effect Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 241001453382 Nitrosomonadales Species 0.000 abstract description 2
- 238000011217 control strategy Methods 0.000 abstract description 2
- 241000894006 Bacteria Species 0.000 description 21
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 5
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 5
- 230000001651 autotrophic effect Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000037323 metabolic rate Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
Landscapes
- 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)
Abstract
The invention discloses a method for realizing anaerobic ammonia oxidation granulation and synchronous denitrification and dephosphorization by shortening precipitation time in a stage. The method comprises the following steps: and (3) inoculating short-cut nitrification anaerobic ammonia oxidation integrated floc sludge in the AOA-SBR reactor. After the total nitrogen removal rate is more than 85%, phosphorus removal is realized by discharging phosphorus-rich floccule sludge with poor sedimentation performance through stage shortening of sedimentation time. The control strategy is that after the sedimentation time is shortened from 30min to 25min, the system stably operates for 20d under the condition that the total nitrogen removal is more than 85 percent and the total phosphorus removal is more than 90 percent, and then the sedimentation time shortening operation of the next stage is carried out. Each run shortens the settling time by 5 minutes during which particles greater than 200 μm in the effluent are screened back into the AOA-SBR reactor by a screen. Finally, the precipitation time is 5min, the grain diameter is more than 400 mu m, the total nitrogen removal is more than 90%, and the total phosphorus removal is more than 95%. The invention solves the contradiction of sludge age between the retention of anaerobic ammonia oxidizing bacteria and the dephosphorization.
Description
Technical Field
The invention relates to a method for realizing anaerobic ammonia oxidation granulation and synchronous denitrification and dephosphorization by shortening precipitation time in a stage, belonging to the technical field of sewage biological treatment.
Background
Excessive nitrogen and phosphorus elements are discharged into the water body, so that the water body is eutrophicated, and the aquatic ecological environment is seriously endangered. Therefore, the reduction of nitrogen and phosphorus in sewage is of great importance, and is a main treatment index of sewage treatment plants. The traditional nitrification and denitrification process has the defects of high demand on carbon sources, high residual sludge output and the like because of high aeration energy consumption, and is more and more difficult to meet the requirements of energy conservation and consumption reduction. The addition of a flocculant to effect phosphorus removal also increases the operating cost of the water mill. Therefore, the development of a new energy-saving process for synchronous denitrification and dephosphorization is urgent.
The anaerobic ammonia oxidation process can realize nitrogen reduction under autotrophic conditions because the anaerobic ammonia oxidation process does not consume organic carbon sources, and becomes a popular research direction in the field of sewage treatment. However, the extremely low growth rate (0.05 to 0.33d -1) of anammox bacteria, which is an unstable nitrite supply, limits practical popularization and application. Thus, the proper retention pattern and stable nitrite supply determine the stability of the anaerobic ammonia oxidation system. In previous studies, both short-cut nitrification and endogenous short-cut denitrification have been demonstrated to provide nitrite for anaerobic ammoxidation. Short-cut nitrification and endogenous short-cut denitrification can be coupled to provide stable nitrite for anaerobic ammoxidation in a single-stage AOA operating mode. Thus, how to achieve effective anaerobic ammonium oxidation bacteria retention becomes a key issue for such substrate nitrite-starved systems, especially in the synchronous heterotrophic dephosphorization process. Biological phosphorus removal requires periodic discharge of phosphorus-rich sludge to effect phosphorus removal from the system, and thus has a relatively short sludge age. This conflicts with anaerobic ammonium oxidation bacteria in sludge age, and therefore, in previous studies on anaerobic ammonium oxidation systems, the process of phosphorus removal was often neglected without sludge removal.
Heterotrophic phosphorus accumulating bacteria tend to dominate the system due to their rapid metabolic rates, while autotrophic anammox bacteria tend to be gradually replaced in the system. However, anaerobic ammoxidation tends to aggregate and grow, and thus tends to form clusters to form particles. Thus, anaerobic ammonium oxidation bacteria can be effectively enriched by stable substrate supply, and then granulation of anaerobic ammonium oxidation can be realized by screening under physical selective pressure. On the basis, a large amount of phosphorus-rich phosphorus accumulating bacteria biomass in the discharged flocs can realize synchronous and efficient denitrification and dephosphorization to maintain anaerobic ammoxidation reaction, and has wide application prospect.
Disclosure of Invention
The invention provides a method for realizing anaerobic ammoxidation granulation and synchronous nitrogen and phosphorus removal by shortening the precipitation time in a stage, which realizes the granulation of anaerobic ammoxidation and synchronous deep nitrogen and phosphorus removal in a low-C/N domestic sewage system and solves the two outstanding problems of difficult granulation of anaerobic ammoxidation of actual low-matrix domestic sewage and contradiction between sludge ages of anaerobic ammoxidation bacteria and phosphorus accumulating bacteria. The invention creatively proposes to realize the stable dephosphorization effect of the system by discharging the phosphorus-rich floccule sludge in stages and supply sufficient carbon source for phosphorus accumulating bacteria on the premise of saving carbon source by anaerobic ammonia oxidation autotrophic denitrification. Under the control strategy of shortening the sedimentation time in stages, anaerobic ammonia oxidation bacteria can be partially elutriated, but can be effectively remained in particles, and the operation of shortening the sedimentation time in the next stage can be started after the stable operation for a period of time ensures the number of the anaerobic ammonia oxidation bacteria in the system. Under the condition, heterotrophic bacteria such as phosphorus accumulating bacteria with high growth speed can be enriched in the flocs, so that the purpose of discharging the flocs and removing phosphorus is realized on the premise of keeping the autotrophic denitrification effect of anaerobic ammonia oxidation.
The invention aims at solving the problems by the following technical scheme: a method for realizing anaerobic ammoxidation granulation and synchronous denitrification and dephosphorization by shortening the precipitation time in a stage is characterized by comprising the following steps:
The device comprises a domestic sewage raw water tank (1), an SBR reactor (2) and a 200 mu m aperture screen (3); the SBR reactor (2) is provided with a stirring device (2.2), an aeration pump (2.3), a rotameter (2.4), an aeration disc (2.5), DO/pH on-line measuring equipment (2.6) and an electric drain valve (2.7);
the domestic sewage raw water tank (1) is connected with the SBR reactor (2) through a water inlet pump (2.1).
The method comprises the following steps:
1) And a system starting stage:
Inoculating short-cut nitrification anaerobic ammonia oxidation integrated floccule sludge into the SBR reactor (2) to ensure that the concentration of the mixed sludge is 2500+/-200 mg/L. The method is operated in an anaerobic/aerobic/anoxic (AOA) mode, wherein each period comprises anaerobic stirring for 90-120min, aerobic stirring for 90-120min, anoxic stirring for 360-480min, sedimentation time for 30min, and drainage ratio of 50%, and the method is operated for 2 periods each day. The concentration of dissolved oxygen in the aerobic stage is controlled to be 0.5-1.5 mg/L. The start-up phase does not discharge sludge and the settling time treatment phase begins to shorten after the total nitrogen removal rate is more than 85%.
2) Treatment stage-stage shortens the settling time:
2.1 Shortening the sedimentation time to 25min so as to discharge the phosphorus-rich flocculated sludge, passing the sludge discharged every day through a screen with the aperture of 200 mu m, flushing particles on the screen back into the reactor, and promoting the anaerobic ammonia oxidation granulation. And then operating in an AOA operation mode, wherein the anaerobic stirring is performed for 90-120min, the aerobic stirring is performed for 90-120min, the anoxic stirring is performed for 360-480min, the sedimentation time is 25min, the drainage ratio is 50%, and the operation is performed for 2 cycles per day. The concentration of dissolved oxygen in the aerobic stage is controlled to be 0.5-1.5 mg/L. Under the condition that the total nitrogen removal rate is more than 85 percent and the total phosphorus removal rate is more than 90 percent, the system continues to stably run for 20d, and then the operation of shortening the precipitation time in the next stage is carried out;
2.2 Further shorten the settling time to 20min, repeat (2.1) the operation mode except for the settling time. Comprises anaerobic stirring for 90-120min, aerobic for 90-120min, anoxic for 360-480min, sedimentation time for 20min, and drainage ratio of 50%, and is operated for 2 cycles per day. The concentration of dissolved oxygen in the aerobic stage is controlled to be 0.5-1.5 mg/L. When the system achieves a total nitrogen removal rate of >85% and a total phosphorus removal rate of >90%, the system continues to operate stably for 20d, and continues to operate for the next operation of shortening the precipitation time.
2.3 In addition to the precipitation time, the anaerobic stirring is fixed for 90-120min, the aerobic stirring is fixed for 90-120min, the anoxic stirring is carried out for 360-480min, the drainage ratio is 50%, the operation is carried out for 2 cycles per day, and the dissolved oxygen concentration in the aerobic stage is controlled to be in an operation mode of 0.5-1.5 mg/L. Each time the precipitation time was shortened to 5min until the final precipitation time was shortened to 5min.
2.4 The sedimentation time is kept to be 5min, after the operation is carried out for 20d, the average grain diameter of the system is more than 400 mu m, the total nitrogen removal rate is more than 90 percent, the total phosphorus removal rate is more than 95 percent, and the system realizes anaerobic ammonia oxidation granulation and stable synchronous denitrification and dephosphorization effects.
The invention has the following advantages:
1) Realizes stable synchronous denitrification and dephosphorization in the single-stage anaerobic ammonia oxidation reactor, and solves the contradiction between sludge ages of anaerobic ammonia oxidation bacteria and phosphorus accumulating bacteria. By combining the metabolic characteristics of anaerobic ammonia oxidizing bacteria and phosphorus accumulating bacteria, a brand new thought is provided for realizing biological phosphorus removal of a system based on anaerobic ammonia oxidation;
2) And the anaerobic ammonia oxidation granulation is realized rapidly in an actual domestic sewage system, so that the high-efficiency retention of autotrophic anaerobic ammonia oxidation bacteria is facilitated. The particles and the flocs in the domesticated and mature system have obvious dominant microorganism distribution, the anaerobic ammonia oxidation bacteria are highly enriched in the particles, and the flocs contain a large amount of heterotrophic bacteria such as phosphorus accumulating bacteria. The operation method for realizing granulation is simple, the operation cost is low, and the treatment efficiency after granulation is high;
3) The organic matters of raw water can be fully utilized, and the coordination between endogenous short-range denitrification and dephosphorization is realized by coordinating the organic matters, so that synchronous denitrification and dephosphorization are realized. The short-cut nitrification and the endogenous short-cut denitrification supply of the nitrite ensure the stability of anaerobic ammoxidation, and have very good adaptation to water quality fluctuation.
Drawings
FIG. 1 is a schematic diagram of a method for realizing anaerobic ammonia oxidation granulation and synchronous denitrification and dephosphorization by shortening the precipitation time in a stage.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the attached drawing figures and examples:
As shown in figure 1, the device comprises a domestic sewage raw water tank (1), an SBR reactor (2) and a 200 mu m aperture screen (3); the SBR reactor (2) is provided with a stirring device (2.2), an aeration pump (2.3), a rotameter (2.4), an aeration disc (2.5), DO/pH on-line measuring equipment (2.6) and an electric drain valve (2.7);
the domestic sewage raw water tank (1) is connected with the SBR reactor (2) through a water inlet pump (2.1).
The experiment adopts domestic sewage of a Beijing industrial university family area as raw water, and the specific water quality is as follows: COD concentration is 135-230mg/L, NH 4 + -N concentration is 50-74mg/L, NO 2 --N≤0.5mg/L,NO3 - -N is less than or equal to 1.8mg/L. The experimental system is shown in FIG. 1, each reactor is made of organic glass, and the total volume of the SBR reactor (2) is 11L, wherein the effective volume is 10L.
The specific operation is as follows:
1) And a system starting stage:
The SBR reactor (2) is inoculated with short-cut nitrification anaerobic ammonia oxidation integrated floccule sludge which is domesticated and matured in a laboratory, the average grain diameter is 80 mu m, and the sludge concentration in the SBR reactor after mixing is 2500mg/L. The operation was performed in an anaerobic/aerobic/anoxic (AOA) mode, each cycle comprising anaerobic stirring for 120min, aerobic for 90min, anoxic for 420min, sedimentation time for 30min, drainage ratio for 50%, 2 cycles per day. The concentration of dissolved oxygen in the aerobic stage is controlled to be 0.5-1.5 mg/L. The start-up phase does not discharge sludge and the settling time treatment phase begins to shorten after the total nitrogen removal rate is more than 85%.
2) Treatment stage-stage shortens the settling time:
2.1 Shortening the sedimentation time to 25min so as to discharge the phosphorus-rich flocculated sludge, passing the sludge discharged every day through a screen with the aperture of 200 mu m, flushing particles on the screen back into the reactor, and promoting the anaerobic ammonia oxidation granulation. Then the operation is carried out in an AOA operation mode, comprising anaerobic stirring for 120min, aerobic for 90min, anoxic for 420min, sedimentation time for 25min, and drainage ratio of 50 percent, and the operation is carried out for 2 cycles per day. The concentration of dissolved oxygen in the aerobic stage is controlled to be 0.5-1.5 mg/L. Under the condition that the total nitrogen removal is more than 85 percent and the total phosphorus removal is more than 90 percent, the system continues to stably run for 20d, and then the operation of shortening the sedimentation time in the next stage is carried out;
2.2 Further shorten the settling time to 20min, repeat (2.1) the operation mode except for the settling time. Comprises anaerobic stirring for 120min, aerobic for 90min, anoxic for 420min, sedimentation time for 20min, and drainage ratio of 50%, and is operated for 2 cycles per day. The concentration of dissolved oxygen in the aerobic stage is controlled to be 0.5-1.5 mg/L. When the system achieves a total nitrogen removal rate of >85% and a total phosphorus removal rate of >90%, the system continues to operate stably for 20d, and continues to operate for the next operation of shortening the precipitation time.
2.3 In addition to the precipitation time, the anaerobic stirring is fixed for 90-120min, the aerobic stirring is fixed for 90-120min, the anoxic stirring is carried out for 360-480min, the drainage ratio is 50%, the operation is carried out for 2 cycles per day, and the dissolved oxygen concentration in the aerobic stage is controlled to be in an operation mode of 0.5-1.5 mg/L. Each time the precipitation time was shortened to 5min until the final precipitation time was shortened to 5min.
2.3 The sedimentation time is kept to be 5min, the average grain diameter of the system is 421 mu m after 20d operation, the total nitrogen removal rate is more than 92 percent, the total phosphorus removal rate is more than 95 percent, and the stable denitrification and dephosphorization effect is realized.
The test results show that: after stable operation, the COD concentration of the system effluent is 35-42 mg/L, the NH 4 + -N concentration is less than 5mg/L, and the NO 2 --N＜1mg/L,NO3 --N＜2mg/L,PO4 3- -P concentration is less than 0.5mg/L.
The foregoing is illustrative of the present invention and is not intended to be limiting, as the invention may be more readily understood and practiced by those skilled in the art, and as such, simply modified within the scope of this invention.
Claims (1)
1. A method for realizing anaerobic ammoxidation granulation and synchronous denitrification and dephosphorization by shortening the precipitation time in a stage is characterized by comprising the following steps:
The device comprises a domestic sewage raw water tank (1), an SBR reactor (2) and a 200 mu m aperture screen (3); the SBR reactor (2) is provided with a stirring device (2.2), an aeration pump (2.3), a rotameter (2.4), an aeration disc (2.5), DO/pH on-line measuring equipment (2.6) and an electric drain valve (2.7);
The domestic sewage raw water tank (1) is connected with the SBR reactor (2) through a water inlet pump (2.1);
the method comprises the following steps:
1) And a system starting stage:
Inoculating short-cut nitrification anaerobic ammonia oxidation integrated floccule sludge into the SBR reactor (2) to ensure that the concentration of the mixed sludge is 2500+/-200 mg/L; operating in an anaerobic/aerobic/anoxic AOA mode, wherein each period comprises anaerobic stirring for 90-120min, aerobic for 90-120min, anoxic for 360-480min, settling time for 30min, and drainage ratio of 50%, and operating for 2 periods each day; the concentration of dissolved oxygen in the aerobic stage is controlled to be 0.5-1.5 mg/L; the sludge is not discharged in the starting stage, and the sedimentation time treatment stage is shortened after the total nitrogen removal rate is more than 85%;
2) Treatment stage-stage shortens the settling time:
2.1 Shortening the sedimentation time to 25min so as to discharge phosphorus-rich flocculated sludge, passing the sludge discharged every day through a screen with the aperture of 200 mu m, flushing particles on the screen back into the reactor, and promoting the anaerobic ammonia oxidation granulation; then operating in an AOA operation mode, wherein the anaerobic stirring is performed for 90-120min, the aerobic stirring is performed for 90-120min, the anoxic stirring is performed for 360-480min, the sedimentation time is 25min, the drainage ratio is 50%, and the operation is performed for 2 cycles per day; the concentration of dissolved oxygen in the aerobic stage is controlled to be 0.5-1.5 mg/L; under the condition that the total nitrogen removal rate is more than 85 percent and the total phosphorus removal rate is more than 90 percent, the system continues to stably run for 20d, and then the operation of shortening the precipitation time in the next stage is carried out;
2.2 Further shortening the precipitation time to 20min, and repeating (2.1) the operation mode except the precipitation time; comprises anaerobic stirring for 90-120min, aerobic for 90-120min, anoxic for 360-480min, sedimentation time for 20min, and drainage ratio of 50%, and running for 2 cycles per day; the concentration of dissolved oxygen in the aerobic stage is controlled to be 0.5-1.5 mg/L; when the total nitrogen removal rate is more than 85% and the total phosphorus removal rate is more than 90%, the system continues to stably operate for 20d, and the next operation for shortening the precipitation time is continued;
2.3 In addition to the precipitation time, the anaerobic stirring is fixed for 90-120min, the aerobic stirring is fixed for 90-120min, the anoxic stirring is carried out for 360-480min, the drainage ratio is 50%, the operation is carried out for 2 cycles per day, and the dissolved oxygen concentration in the aerobic stage is controlled to be in an operation mode of 0.5-1.5 mg/L; each time the sedimentation time is shortened to 5min until the final sedimentation time is shortened to 5min;
2.4 The sedimentation time is kept to be 5min, after the operation is carried out for 20d, the average grain diameter of the system is more than 400 mu m, the total nitrogen removal rate is more than 90 percent, the total phosphorus removal rate is more than 95 percent, and the system realizes anaerobic ammonia oxidation granulation and stable synchronous denitrification and dephosphorization effects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211350286.7A CN115557610B (en) | 2022-10-31 | 2022-10-31 | Method for realizing anaerobic ammoxidation granulation and synchronous denitrification and dephosphorization by shortening precipitation time in stages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211350286.7A CN115557610B (en) | 2022-10-31 | 2022-10-31 | Method for realizing anaerobic ammoxidation granulation and synchronous denitrification and dephosphorization by shortening precipitation time in stages |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115557610A CN115557610A (en) | 2023-01-03 |
| CN115557610B true CN115557610B (en) | 2024-04-26 |
Family
ID=84769221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211350286.7A Active CN115557610B (en) | 2022-10-31 | 2022-10-31 | Method for realizing anaerobic ammoxidation granulation and synchronous denitrification and dephosphorization by shortening precipitation time in stages |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115557610B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663862A (en) * | 2013-11-25 | 2014-03-26 | 北京工业大学 | Device and method for nitrogen and phosphorus removal for low CN ratio urban sewage through nitrosation and anaerobic ammonia oxidation coupling denitrifying phosphorus removal intensification |
| CN106430583A (en) * | 2016-10-19 | 2017-02-22 | 青岛大学 | Device and method for realizing treatment of low-carbon urban wastewater by anaerobic ammonia oxidation coupling denitrifying phosphorus removal through single-stage SBR |
| CN107162186A (en) * | 2017-06-20 | 2017-09-15 | 北京工业大学 | A kind of apparatus and method of the municipal sewage Anammox autotrophic denitrification based on granule sludge |
| CN110040851A (en) * | 2019-05-28 | 2019-07-23 | 北京工业大学 | A kind of maintenance short distance nitration/Anammox integrated treatment municipal sewage stable operation apparatus and method |
| CN113072183A (en) * | 2021-04-08 | 2021-07-06 | 北京工业大学 | Method and device for realizing mainstream anaerobic ammonia oxidation in-situ enrichment through traditional activated sludge |
| CN113697951A (en) * | 2021-08-02 | 2021-11-26 | 北京工业大学 | Device and method for realizing granular sludge shortcut nitrification-anaerobic ammonia oxidation coupled endogenous denitrification nitrogen removal at low temperature |
| CN114620833A (en) * | 2022-03-22 | 2022-06-14 | 北京工业大学 | Method for realizing nitrogen and phosphorus removal of low C/N domestic sewage by integrally coupling endogenous short-cut denitrification with anaerobic ammonia oxidation denitrification phosphorus removal |
-
2022
- 2022-10-31 CN CN202211350286.7A patent/CN115557610B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663862A (en) * | 2013-11-25 | 2014-03-26 | 北京工业大学 | Device and method for nitrogen and phosphorus removal for low CN ratio urban sewage through nitrosation and anaerobic ammonia oxidation coupling denitrifying phosphorus removal intensification |
| CN106430583A (en) * | 2016-10-19 | 2017-02-22 | 青岛大学 | Device and method for realizing treatment of low-carbon urban wastewater by anaerobic ammonia oxidation coupling denitrifying phosphorus removal through single-stage SBR |
| CN107162186A (en) * | 2017-06-20 | 2017-09-15 | 北京工业大学 | A kind of apparatus and method of the municipal sewage Anammox autotrophic denitrification based on granule sludge |
| CN110040851A (en) * | 2019-05-28 | 2019-07-23 | 北京工业大学 | A kind of maintenance short distance nitration/Anammox integrated treatment municipal sewage stable operation apparatus and method |
| CN113072183A (en) * | 2021-04-08 | 2021-07-06 | 北京工业大学 | Method and device for realizing mainstream anaerobic ammonia oxidation in-situ enrichment through traditional activated sludge |
| WO2022213586A1 (en) * | 2021-04-08 | 2022-10-13 | 北京工业大学 | Method and device for realizing mainstream anaerobic ammonium oxidation in-situ enrichment by means of traditional activated sludge |
| CN113697951A (en) * | 2021-08-02 | 2021-11-26 | 北京工业大学 | Device and method for realizing granular sludge shortcut nitrification-anaerobic ammonia oxidation coupled endogenous denitrification nitrogen removal at low temperature |
| CN114620833A (en) * | 2022-03-22 | 2022-06-14 | 北京工业大学 | Method for realizing nitrogen and phosphorus removal of low C/N domestic sewage by integrally coupling endogenous short-cut denitrification with anaerobic ammonia oxidation denitrification phosphorus removal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115557610A (en) | 2023-01-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108545830B (en) | Process for enhancing partial shortcut nitrification anaerobic ammonia oxidation of continuous flow municipal sewage by utilizing sludge fermentation | |
| CN108585202B (en) | Process for realizing partial short-cut nitrification, sludge fermentation coupling denitrification and anaerobic ammonia oxidation treatment of domestic sewage in sequencing batch reactor | |
| CN107162193B (en) | Device and method for treating domestic sewage by low-oxygen nitrification coupled with short-range denitrification anaerobic ammonia oxidation | |
| CN110002587B (en) | Device and method for coupling segmented drainage type shortcut nitrification, parallel anaerobic ammonia oxidation, denitrification and phosphorus removal with endogenous denitrification | |
| CN103951059B (en) | Multi-cycle composite bioreactor and process thereof | |
| CN112250176A (en) | Device and method for realizing advanced nitrogen and phosphorus removal of municipal sewage by integrated shortcut nitrification coupled with anaerobic ammonia oxidation denitrification phosphorus removal | |
| CN112250175B (en) | Device and method for realizing deep denitrification of municipal sewage by virtue of integrated shortcut nitrification-anaerobic ammonia oxidation coupling with endogenous shortcut denitrification | |
| CN110002591B (en) | Device and method for realizing shortcut nitrification-denitrification dephosphorization coupling of municipal domestic sewage under anoxic/aerobic alternate condition | |
| CN108408897B (en) | Integrated short-cut nitrification anaerobic ammonia oxidation and phosphorus removal intermittent aeration real-time control method | |
| CN108658229B (en) | Device and method for controlling autotrophic/heterotrophic deep denitrification process | |
| CN110002585B (en) | Integrated postposition anoxic process and device for realizing advanced denitrification, shortcut nitrification and anaerobic ammonia oxidation of municipal sewage | |
| CN113233592B (en) | Treatment device and method for realizing synchronous deep denitrification and decarbonization of advanced landfill leachate and domestic sewage | |
| CN113461145A (en) | Device and method for deep denitrification and synchronous sludge reduction of secondary effluent of sewage treatment plant | |
| CN113023872B (en) | Device and method for realizing domestic sewage denitrification by synchronous shortcut nitrification-denitrification-anaerobic ammonia oxidation coupling denitrification | |
| CN105217882A (en) | Aerobic suction phosphorus is coupled with half short distance nitration the method for the two granule sludge system depth denitrogenation dephosphorizing of Anammox | |
| CN112250183A (en) | Device and method for treating urban sewage by combining whole-course nitrification with sludge fermentation and coupling short-range denitrification anaerobic ammonia oxidation | |
| CN108383239B (en) | Integrated biological treatment process for shortcut nitrification anaerobic ammonia oxidation and phosphorus removal under intermittent aeration mode | |
| CN114772725A (en) | Device and method for enhancing nitrogen and phosphorus removal of domestic sewage by coupling sulfur autotrophic short-cut denitrification with anaerobic ammonia oxidation | |
| CN113716693A (en) | Device and method for deep denitrification of landfill leachate based on anaerobic-aerobic-anoxic operation | |
| CN104761056A (en) | Real-time control system and method for short-cut nitrification and coupled double-SBR denitrifying phosphorus removal | |
| CN115959771A (en) | Device and method for recycling carbon source of urban sewage by enhanced autotrophic/heterotrophic coupling deep denitrification | |
| CN114212884B (en) | Device and method for realizing double short-range coupling anaerobic ammonia oxidation SFBBR deep denitrification of domestic sewage by two-stage water inflow A/O/A | |
| CN113023888B (en) | Device and method for synchronously treating domestic sewage and nitrate wastewater by using denitrification dephosphorization coupled with shortcut nitrification anaerobic ammonia oxidation | |
| CN115745178B (en) | Method for realizing synchronous aerobic anoxic denitrification and dephosphorization by composite granular sludge system | |
| CN115321666B (en) | Device and method for treating municipal sewage by strengthening internal carbon source storage and combining endogenous short-range denitrification-anaerobic ammoxidation by sludge fermentation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |