CN113800636B - Method and device for treating sludge digestive juice by coupling short-cut nitrification/anaerobic ammonia oxidation-fermentation and short-cut denitrification/anaerobic ammonia oxidation - Google Patents
Method and device for treating sludge digestive juice by coupling short-cut nitrification/anaerobic ammonia oxidation-fermentation and short-cut denitrification/anaerobic ammonia oxidation Download PDFInfo
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 224
- 239000010802 sludge Substances 0.000 title claims abstract description 129
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 112
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 102
- 230000003647 oxidation Effects 0.000 title claims abstract description 101
- 230000008878 coupling Effects 0.000 title claims abstract description 46
- 238000010168 coupling process Methods 0.000 title claims abstract description 46
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 46
- 238000000855 fermentation Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000001079 digestive effect Effects 0.000 title claims abstract description 15
- 235000011389 fruit/vegetable juice Nutrition 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 156
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 claims abstract description 57
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005273 aeration Methods 0.000 claims abstract description 32
- 241000894006 Bacteria Species 0.000 claims abstract description 23
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 18
- 230000029087 digestion Effects 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 230000020477 pH reduction Effects 0.000 claims abstract description 3
- 230000004151 fermentation Effects 0.000 claims description 36
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 22
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 claims description 20
- 230000001276 controlling effect Effects 0.000 claims description 17
- 238000012806 monitoring device Methods 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 12
- 239000010865 sewage Substances 0.000 claims description 10
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 6
- 230000001651 autotrophic effect Effects 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 230000014759 maintenance of location Effects 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- 235000017281 sodium acetate Nutrition 0.000 claims description 6
- 239000001632 sodium acetate Substances 0.000 claims description 6
- 238000011081 inoculation Methods 0.000 claims description 5
- 230000003203 everyday effect Effects 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 claims 1
- 238000006460 hydrolysis reaction Methods 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 7
- 239000012528 membrane Substances 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000003301 hydrolyzing effect Effects 0.000 abstract description 2
- 239000005431 greenhouse gas Substances 0.000 abstract 1
- 230000008569 process Effects 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 5
- 241001453382 Nitrosomonadales Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000192710 Microcystis aeruginosa Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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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
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/15—N03-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- 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
A method and a device for treating sludge digestive juice by coupling short-cut nitrification/anaerobic ammonia oxidation-fermentation and short-cut denitrification/anaerobic ammonia oxidation belong to the field of biochemical treatment of sludge digestive juice. After the sludge digestion liquid enters the SBR reactor, the pre-anoxic/aerobic/anoxic operation mode is adopted, organic matters in raw water and nitrate nitrogen remained in the upper period are removed through the anoxic bacteria and the denitrifying bacteria, part of total nitrogen in the raw water is removed through the ammoxidation bacteria and the anaerobic ammoxidation bacteria on the biological membrane, the effluent enters the UASB reactor, and the total nitrogen of the effluent is further reduced through the combined action of the hydrolytic acidification bacteria, the denitrifying bacteria and the anaerobic ammoxidation bacteria in the granular sludge. The invention does not need additional carbon source, saves aeration energy consumption and can reduce emission of greenhouse gas, solves the problem of unstable denitrification effect of the system due to easy loss of anaerobic ammonia oxidation sludge by utilizing biological membranes and granular sludge, improves denitrification load and stability of the system, and realizes deep denitrification of sludge digestive juice and sludge reduction and recycling.
Description
Technical Field
The invention relates to a method and a device for treating sludge digestion liquid and treating excess sludge based on a short-cut nitrification/anaerobic ammonia oxidation-fermentation coupling short-cut denitrification/anaerobic ammonia oxidation process, belonging to the technical fields of biochemical treatment of sludge digestion liquid and sludge reduction. Firstly, realizing half-short-cut nitrification by controlling aeration in an SBR reactor, then performing anaerobic ammonia oxidation autotrophic denitrification, finally realizing the coupling of sludge fermentation, short-cut denitrification and anaerobic ammonia oxidation in a UASB reactor, achieving the purpose of deep denitrification of sludge digestive juice under the condition of not adding a carbon source, realizing sludge reduction and recycling, and simultaneously enhancing the stability of a system by using a biomembrane and granular sludge in the reactor. The technology is suitable for advanced treatment of sludge digestive juice and sludge reduction treatment.
Background
Along with the rapid development of the economy in China, the sewage and wastewater generated by various industries is discharged into a receiving water body without proper treatment, a series of eutrophication phenomena such as water bloom, red tide and the like are caused, the dissolved oxygen of the receiving water body is reduced, the water quality is deteriorated, the survival of fish and other organisms is influenced, and the water ecological balance is destroyed.
The sludge is an unavoidable byproduct in the sewage treatment process, and when the residual sludge and the primary sludge are digested in the sludge digestion tank, organic nitrogen in a solid phase is converted into ammonia nitrogen in a liquid phase, so that the sludge digestion liquid becomes high ammonia nitrogen and low C/N ratio wastewater. The sludge digestive juice is usually returned to the main reaction zone at the front end of the sewage treatment plant for treatment, so that the problems of high aeration energy consumption, expensive additional carbon source and high residual sludge yield of the traditional sewage treatment plant in China are more remarkable. In order to solve the problem of water eutrophication, strict sewage discharge standards are formulated in China, and higher requirements are also provided for the process of a sewage treatment plant. The anaerobic ammonia oxidation bacteria on the biological film can utilize nitrite nitrogen and ammonia nitrogen to carry out autotrophic denitrification, so that the aeration rate and the expense of externally adding a carbon source are reduced, the problem that the anaerobic ammonia oxidation bacteria are difficult to stay is solved, the semi-short-cut nitrification can provide a stable nitrite nitrogen source for anaerobic ammonia oxidation, but a large amount of nitrate nitrogen remains in effluent water during sludge digestion liquid treatment, and the requirement of deep denitrification of the sludge digestion liquid cannot be met.
Therefore, the short-cut nitrification/anaerobic ammonia oxidation and fermentation coupling short-cut denitrification/anaerobic ammonia oxidation process can realize the deep denitrification of the sludge digestion liquid and can achieve the purposes of reducing, stabilizing and recycling the residual sludge.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to solve the problems in deep denitrification of sludge digestive juice, sludge reduction and resource utilization, and provides a device and a method based on a short-cut nitrification/anaerobic ammonia oxidation-fermentation coupling short-cut denitrification/anaerobic ammonia oxidation process.
After the sludge digestion liquid enters the SBR reactor, the pre-anoxic/aerobic/anoxic operation mode is adopted, organic matters in raw water and nitrate nitrogen remained in the upper period are removed through the anoxic bacteria and the denitrifying bacteria, then part of total nitrogen in the raw water is removed through the ammoxidation bacteria and the anaerobic ammoxidation bacteria on the biological membrane, and the effluent enters the UASB reactor, and the total nitrogen in the effluent is further reduced through the combined action of the hydrolytic acidification bacteria, the denitrifying bacteria and the anaerobic ammoxidation bacteria in the granular sludge. The invention solves the problem of unstable denitrification effect of the system due to easy loss of anaerobic ammonia oxidation sludge by utilizing the biological membrane and the granular sludge, improves the denitrification load and the stability of the system, realizes deep denitrification of sludge digestive juice and sludge reduction and recycling, simultaneously reduces the amount of externally-added carbon source and aeration, and reduces the treatment cost of high-ammonia nitrogen low-C/N ratio wastewater.
The invention is realized by the following technical scheme:
a method and a device for treating sludge digestion liquid by coupling short-cut nitrification/anaerobic ammonia oxidation-fermentation and short-cut denitrification/anaerobic ammonia oxidation are characterized by comprising the following steps: a raw water tank (1), a short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2), an intermediate water tank (3), a mud storage tank (4) and a fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor (5);
the raw water tank (1) is provided with a water outlet (1.1); the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) is provided with a first water inlet pump (2.1), a water inlet (2.2), an aeration pump (2.3), a gas flowmeter (2.4), a pH/DO real-time monitoring device (2.5), a pH probe (2.6), a DO probe (2.7), a stirrer (2.8), an aeration disc (2.9), a water outlet (2.10), a drain valve (2.11), a mud discharge port (2.12), a mud discharge valve (2.13) and a filling frame (2.14); the middle water tank (3) is provided with a middle water tank water inlet (3.1) and a middle water tank water outlet (3.2); the mud storage tank (4) is provided with a mud inlet (4.1) and a mud outlet (4.2); the fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor (5) is provided with a gas collecting device (5.1), a second water inlet pump (5.2), a mud inlet pump (5.3), a three-phase separator (5.4), a sampling port (5.5), an exhaust valve (5.6), a water outlet pipe (5.7) and a reflux pump (5.8);
the water outlet (1.1) of the raw water tank (1) is connected with the water inlet (2.2) of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) through a first water inlet pump (2.1), and air is pumped into the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) through an aeration pump (2.3), a gas flowmeter (2.4) and an aeration disc (2.9) in sequence, and the pH value and the DO value of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor are monitored through a pH/DO real-time monitoring device (2.5); the water outlet (2.10) of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) is connected with the water inlet (3.1) of the intermediate water tank (3) through a drain valve (2.11); the sludge discharge port (2.12) of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) is connected with the water inlet (3.1) of the intermediate water tank (3) through a sludge discharge valve (2.13); the water outlet (3.2) of the intermediate water tank (3) is connected with the bottom of the fermentation coupling short-range denitrification/anaerobic ammonia oxidation UASB reactor (5) through a second water inlet pump (5.2); the mud outlet of the mud storage tank (4) is connected with the bottom of a fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor (5) through a mud inlet pump (5.3); the effluent of the fermentation coupling short-cut denitrification/anaerobic ammoxidation UASB reactor (5) is discharged through a water outlet pipe (5.7).
The invention also provides a method for treating sludge digestive juice by coupling short-cut nitrification/anaerobic ammonia oxidation-fermentation and short-cut denitrification/anaerobic ammonia oxidation, which comprises the following steps:
1) System start-up
(1) Starting the short-cut nitrification/anaerobic ammonia oxidation SBR reactor: the inoculated sludge of the SBR reactor is short-cut nitrification activated sludge, the concentration of the sludge in the reactor after inoculation is controlled to be 3000-5000mg/L, and the sludge age of the reactor is controlled to be 25-30d through sludge discharge; controlling COD concentration in a raw water tank to be 120-200mg/L, ammonia nitrogen concentration to be 200-400mg/L, controlling DO to be maintained at 1-1.5mg/L through a DO real-time monitoring device, setting the drainage ratio of a reactor to be 0.5-0.7, and running for 4-6 cycles each day, wherein each cycle comprises water inlet, aeration stirring, precipitation, drainage and idling; the reactor is operated under the conditions, and when the mass concentration ratio of ammonia nitrogen to nitrite nitrogen in the effluent is 1-1.32 and lasts for more than 15 days, partial short-cut nitrification is realized; then inoculating fixed filler attached with anaerobic ammonia oxidation bacteria in the SBR reactor, wherein the volume of the fixed filler accounts for 25-30% of the effective volume of the reactor, the DO of an aerobic section is controlled to be 1-1.5mg/L by a DO real-time monitoring device, the drainage ratio of the reactor is controlled to be 0.5-0.7, the reactor is operated for 3-4 cycles per day, each cycle comprises water inlet, anoxic stirring, aerobic stirring, anoxic stirring, precipitation, drainage and idling, the reactor is operated under the conditions, and when the concentration of ammonia nitrogen and nitrite nitrogen in the effluent is less than 1mg/L and the reactor is stably operated for more than 15 days, the short-cut nitrification/anaerobic ammonia oxidation SBR reactor is considered to be successfully started.
(2) Starting a fermentation coupling short-cut denitrification/anaerobic ammoxidation UASB reactor: firstly inoculating anaerobic ammonia oxidation granular sludge into a UASB reactor, wherein the concentration of the inoculated sludge is 3000-4000mg/L, the residence time of the UASB reactor is 3-5h, the sludge age is 20-25d, the inflow water adopts artificial water distribution with the mass ratio of nitrite nitrogen to ammonia nitrogen being 1.3, the TN concentration is 20-30mg/L, and when the total nitrogen removal rate reaches more than 90% and is continuously maintained for more than 15 days, the domestication of anaerobic ammonia oxidation bacteria in the UASB reactor is completed; inoculating short-cut denitrification activated sludge into a UASB reactor, controlling the sludge concentration in the reactor after inoculation to be 7000-8000mg/L, adopting artificial water distribution containing ammonia nitrogen, nitrate nitrogen and sodium acetate for water inflow, controlling the mass ratio of nitrate nitrogen to ammonia nitrogen in water inflow to be 1.5, controlling the total nitrogen concentration to be 20-40mg/L and the SCOD concentration to be 40-80mg/L, and completing the coupling of anaerobic ammonia oxidation and short-cut denitrification in the UASB reactor when the total nitrogen removal rate of system effluent reaches more than 85% and is continuously maintained for more than 15 days; and finally, replacing sodium acetate with residual sludge as a carbon source for denitrification to maintain the concentration of SCOD at 40-80mg/L, and considering that the fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor is successfully started when the total nitrogen removal rate reaches more than 85% and is continuously maintained for 15 days.
2) Operation of the system
(1) And (3) opening a first water inlet pump, pumping sludge digestion liquid in a raw water tank into an SBR reactor, operating the reactor in an A/O/A (anoxic/aerobic/anoxic) mode, starting a stirrer in the pre-anoxic-stage short-cut nitrification/anaerobic ammonia oxidation reactor after water inlet is finished, performing anoxic stirring for 30min, and removing residual nitrate nitrogen in the upper period by using denitrification of organic matters in raw water. After the pre-anoxic section is finished, an aeration pump is started to aerate the short-cut nitrification/anaerobic ammonia oxidation reactor, ammonia nitrogen in raw water is partially converted into nitrite nitrogen, DO is controlled to be 1-1.5mg/L through a regulating gas flowmeter, the pH value and DO value are monitored through a pH/DO on-line monitoring device, aerobic stirring time is 120-180min, the aeration pump in the short-cut nitrification/anaerobic ammonia oxidation SBR reactor is closed after the aeration is finished, anoxic stirring is 180-210min, anaerobic ammonia oxidation on a biological film utilizes residual ammonia nitrogen and nitrite nitrogen to carry out autotrophic denitrification, then sediment is carried out for 30min to separate mud and water, a first drain valve is opened, drain water enters an intermediate water tank, the drain water ratio is 70%, 3 periods are operated every day, and the rest time is idle.
(2) The second water inlet pump is started, sewage in the middle water tank is pumped into the UASB reactor, meanwhile, the residual sludge in the sludge storage tank is pumped into the UASB reactor through the sludge inlet pump, the sludge concentration in the UASB reactor is controlled to be 7000-8000mg/L, the hydraulic retention time is 3-5h, the sludge age is 20-25d, and the internal circulation reflux ratio is 100-120%; and operating the UASB reactor under the conditions to realize the coupling treatment of the residual sludge and nitrate nitrogen wastewater in the fermentation coupling short-range denitrification/anaerobic ammonia oxidation reactor, and discharging the effluent and sludge of the UASB reactor through a water outlet pipe and an exhaust valve.
The technical principle of the invention is as follows:
the sludge digestion liquid enters an SBR reactor, denitrification is carried out in a pre-anoxic section, residual nitrate nitrogen in the upper period is removed, semi-short-cut nitrification is carried out in an aerobic section, partial ammonia nitrogen is oxidized into anaerobic ammonia oxidation reaction of a subsequent anoxic section to provide a substrate, the effluent of the SBR reactor contains nitrate nitrogen with higher concentration, the nitrate nitrogen is discharged into an intermediate water tank, and then enters a UASB reactor together with residual sludge in a sludge storage tank, the coupling of residual sludge fermentation, short-cut denitrification and anaerobic ammonia oxidation is completed, short-cut denitrification is carried out by utilizing volatile fatty acid generated by the residual sludge fermentation, and meanwhile, nitrite nitrogen provided by short-cut denitrification and ammonia nitrogen provided by sludge fermentation are simultaneously used for anaerobic ammonia oxidation, so that the sludge fermentation synchronous and efficient sludge digestion liquid treatment is realized. The key point of the invention is that the biological film in the SBR reactor and the granular sludge in the UASB reactor improve the retention rate of anaerobic ammonia oxidizing bacteria so as to enhance the stability of the system, and the realization of the semi-shortcut nitrification in the SBR reactor needs to regulate DO and pH, and the mass ratio of nitrite nitrogen to ammonia nitrogen is controlled to be 1.32 by controlling the aeration time so as to maintain the environment suitable for the survival of the anaerobic ammonia oxidizing bacteria.
Compared with the prior art, the invention has the following advantages:
(1) The autotrophic denitrification with low aeration quantity is realized by coupling short-range nitrification and anaerobic ammonia oxidation, and the short-range denitrification/anaerobic ammonia oxidation process is coupled by series fermentation, so that the reduction, stabilization and resource utilization of the surplus sludge are realized while the deep denitrification of the sludge digestive juice is realized.
(2) The method combines the fermentation, short-cut denitrification and anaerobic ammonia oxidation of the residual sludge into a whole, and directly adds the residual sludge into a fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor, thereby reducing the process floor area, avoiding the complicated steps of the traditional sludge fermentation process and reducing the treatment cost.
(3) In the short-cut nitrification/anaerobic ammonia oxidation and fermentation coupling short-cut denitrification/anaerobic ammonia oxidation process, the existence of the biological film and the granular sludge improves the retention rate of anaerobic ammonia oxidation bacteria, and simultaneously, due to the existence of the subsequent fermentation coupling short-cut denitrification/anaerobic ammonia oxidation process, the denitrification effect is ensured, and the stability of the whole denitrification system and the capability of resisting nitrogen load impact are enhanced.
Drawings
FIG. 1 is a schematic diagram of a device for treating sludge digestive juice by coupling short-cut nitrification/anaerobic ammonia oxidation-fermentation and short-cut denitrification/anaerobic ammonia oxidation.
FIG. 2 is a timing diagram of the operation of a short cut nitrification/anaerobic ammonia oxidation SBR reactor.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1, the method and the device for treating sludge digestion liquid by coupling short-cut nitrification/anaerobic ammonia oxidation-fermentation and short-cut denitrification/anaerobic ammonia oxidation are characterized by comprising the following steps: a raw water tank (1), a short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2), an intermediate water tank (3), a mud storage tank (4) and a fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor (5);
the raw water tank (1) is provided with a water outlet (1.1); the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) is provided with a first water inlet pump (2.1), a water inlet (2.2), an aeration pump (2.3), a gas flowmeter (2.4), a pH/DO real-time monitoring device (2.5), a pH probe (2.6), a DO probe (2.7), a stirrer (2.8), an aeration disc (2.9), a water outlet (2.10), a drain valve (2.11), a mud discharge port (2.12), a mud discharge valve (2.13) and a filling frame (2.14); the middle water tank (3) is provided with a middle water tank water inlet (3.1) and a middle water tank water outlet (3.2); the mud storage tank (4) is provided with a mud inlet (4.1) and a mud outlet (4.2); the fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor (5) is provided with a gas collecting device (5.1), a second water inlet pump (5.2), a mud inlet pump (5.3), a three-phase separator (5.4), a sampling port (5.5), an exhaust valve (5.6), a water outlet pipe (5.7) and a reflux pump (5.8);
the water outlet (1.1) of the raw water tank (1) is connected with the water inlet (2.2) of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) through a first water inlet pump (2.1), and air is pumped into the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) through an aeration pump (2.3), a gas flowmeter (2.4) and an aeration disc (2.9) in sequence, and the pH value and the DO value of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor are monitored through a pH/DO real-time monitoring device (2.5); the water outlet (2.10) of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) is connected with the water inlet (3.1) of the intermediate water tank (3) through a drain valve (2.11); the sludge discharge port (2.12) of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) is connected with the water inlet (3.1) of the intermediate water tank (3) through a sludge discharge valve (2.13); the water outlet (3.2) of the intermediate water tank (3) is connected with the bottom of the fermentation coupling short-range denitrification/anaerobic ammonia oxidation UASB reactor (5) through a second water inlet pump (5.2); the mud outlet of the mud storage tank (4) is connected with the bottom of a fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor (5) through a mud inlet pump (5.3); the effluent of the fermentation coupling short-cut denitrification/anaerobic ammoxidation UASB reactor (5) is discharged through a water outlet pipe (5.7).
The specific experimental water adopts the sludge nitrifying liquid of a sewage treatment plant as raw water, and the specific water quality is as follows: pH is 6.5-7.5, COD concentration is 150-240mg/L, ammonia nitrogen concentration is 200-400mg/L, nitrite nitrogen and nitrate nitrogen are below detection limit, and COD/N ratio is 0.375-1.2. The sludge added every day in the test is the return sludge (the sludge concentration is 8000-10000 mg/L) of the regenerated water plant in the high tombstone shop in Beijing city, and the residual sludge (the sludge concentration is 3000-5000 mg/L) discharged from the short-cut nitrification/anaerobic ammonia oxidation SBR reactor. The SBR used in the short-cut nitrification/anaerobic ammonia oxidation SBR reactor had an effective volume of 10L and a drainage ratio of 0.7, and was operated for 3 cycles per day. The effective volume of the fermentation coupling short-cut denitrification/anaerobic ammoxidation UASB reactor is 5L, and the hydraulic retention time is 3h.
The specific operation process is as follows:
1) System start-up
(1) Starting the short-cut nitrification/anaerobic ammonia oxidation SBR reactor: the inoculated sludge of the SBR reactor is short-cut nitrification activated sludge, the concentration of the sludge in the reactor after inoculation is controlled to be 3000-5000mg/L, and the sludge age of the reactor is controlled to be 25-30d through sludge discharge; controlling COD concentration in a raw water tank to be 120-200mg/L, ammonia nitrogen concentration to be 200-400mg/L, controlling DO to be maintained at 1-1.5mg/L through a DO real-time monitoring device, setting the drainage ratio of a reactor to be 0.5-0.7, and running for 4-6 cycles each day, wherein each cycle comprises water inlet, aeration stirring, precipitation, drainage and idling; the reactor is operated under the conditions, and when the mass concentration ratio of ammonia nitrogen to nitrite nitrogen in the effluent is 1-1.32 and lasts for more than 15 days, partial short-cut nitrification is realized; then inoculating fixed filler attached with anaerobic ammonia oxidation bacteria in the SBR reactor, wherein the volume of the fixed filler accounts for 25-30% of the effective volume of the reactor, the DO of an aerobic section is controlled to be 1-1.5mg/L by a DO real-time monitoring device, the drainage ratio of the reactor is controlled to be 0.5-0.7, the reactor is operated for 3-4 cycles per day, each cycle comprises water inlet, anoxic stirring, aerobic stirring, anoxic stirring, precipitation, drainage and idling, the reactor is operated under the conditions, and when the concentration of ammonia nitrogen and nitrite nitrogen in the effluent is less than 1mg/L and the reactor is stably operated for more than 15 days, the short-cut nitrification/anaerobic ammonia oxidation SBR reactor is considered to be successfully started.
(2) Starting a fermentation coupling short-cut denitrification/anaerobic ammoxidation UASB reactor: firstly inoculating anaerobic ammonia oxidation granular sludge into a UASB reactor, wherein the concentration of the inoculated sludge is 3000-4000mg/L, the residence time of the UASB reactor is 3-5h, the sludge age is 20-25d, the inflow water adopts artificial water distribution with the mass ratio of nitrite nitrogen to ammonia nitrogen being 1.3, the TN concentration is 20-30mg/L, and when the total nitrogen removal rate reaches more than 90% and is continuously maintained for more than 15 days, the domestication of anaerobic ammonia oxidation bacteria in the UASB reactor is completed; inoculating short-cut denitrification activated sludge into a UASB reactor, controlling the sludge concentration in the reactor after inoculation to be 7000-8000mg/L, adopting artificial water distribution containing ammonia nitrogen, nitrate nitrogen and sodium acetate for water inflow, controlling the mass ratio of nitrate nitrogen to ammonia nitrogen in water inflow to be 1.5, controlling the total nitrogen concentration to be 20-40mg/L and the SCOD concentration to be 40-80mg/L, and completing the coupling of anaerobic ammonia oxidation and short-cut denitrification in the UASB reactor when the total nitrogen removal rate of system effluent reaches more than 85% and is continuously maintained for more than 15 days; and finally, replacing sodium acetate with residual sludge as a carbon source for denitrification to maintain the concentration of SCOD at 40-80mg/L, and considering that the fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor is successfully started when the total nitrogen removal rate reaches more than 85% and is continuously maintained for 15 days.
2) Operation of the system
(1) And (3) opening a first water inlet pump, pumping sludge digestion liquid in a raw water tank into an SBR reactor, operating the reactor in an A/O/A (anoxic/aerobic/anoxic) mode, starting a stirrer in the pre-anoxic-stage short-cut nitrification/anaerobic ammonia oxidation reactor after water inlet is finished, performing anoxic stirring for 30min, and removing residual nitrate nitrogen in the upper period by using denitrification of organic matters in raw water. After the pre-anoxic section is finished, an aeration pump is started to aerate the short-cut nitrification/anaerobic ammonia oxidation reactor, ammonia nitrogen in raw water is partially converted into nitrite nitrogen, DO is controlled to be 1-1.5mg/L through a regulating gas flowmeter, the pH value and DO value are monitored through a pH/DO on-line monitoring device, aerobic stirring time is 120-180min, the aeration pump in the short-cut nitrification/anaerobic ammonia oxidation SBR reactor is closed after the aeration is finished, anoxic stirring is 180-210min, anaerobic ammonia oxidation on a biological film utilizes residual ammonia nitrogen and nitrite nitrogen to carry out autotrophic denitrification, then sediment is carried out for 30min to separate mud and water, a first drain valve is opened, drain water enters an intermediate water tank, the drain water ratio is 70%, 3 periods are operated every day, and the rest time is idle.
(2) The second water inlet pump is started, sewage in the middle water tank is pumped into the UASB reactor, meanwhile, the residual sludge in the sludge storage tank is pumped into the UASB reactor through the sludge inlet pump, the sludge concentration in the UASB reactor is controlled to be 7000-8000mg/L, the hydraulic retention time is 3-5h, the sludge age is 20-25d, and the internal circulation reflux ratio is 100-120%; and operating the UASB reactor under the conditions to realize the coupling treatment of the residual sludge and nitrate nitrogen wastewater in the fermentation coupling short-range denitrification/anaerobic ammonia oxidation reactor, and discharging the effluent and sludge of the UASB reactor through a water outlet pipe and an exhaust valve.
The continuous experimental results show that: after stable operation, the ammonia nitrogen in the effluent of the final reactor is less than 5mg/L, the total nitrogen in the effluent is less than 15mg/L, and the COD in the effluent is less than 50mg/L, thereby realizing the deep denitrification of the sludge digestive juice and achieving the sludge decrement rate of 25%.
The foregoing is a specific embodiment of the present invention to facilitate the better understanding and application of the present invention by those skilled in the art, but the implementation of the present invention is not limited thereto, and thus, all simple modifications made by those skilled in the art are within the scope of the present invention.
Claims (1)
1. The method for treating the sludge digestive juice by coupling short-cut nitrification/anaerobic ammonia oxidation-fermentation and short-cut denitrification/anaerobic ammonia oxidation is characterized in that the device used by the method comprises the following steps: a raw water tank (1), a short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2), an intermediate water tank (3), a mud storage tank (4) and a fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor (5);
the raw water tank (1) is provided with a water outlet (1.1); the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) is provided with a first water inlet pump (2.1), a water inlet (2.2), an aeration pump (2.3), a gas flowmeter (2.4), a pH/DO real-time monitoring device (2.5), a pH probe (2.6), a DO probe (2.7), a stirrer (2.8), an aeration disc (2.9), a water outlet (2.10), a drain valve (2.11), a mud discharge port (2.12), a mud discharge valve (2.13) and a filling frame (2.14); the middle water tank (3) is provided with a middle water tank water inlet (3.1) and a middle water tank water outlet (3.2); the mud storage tank (4) is provided with a mud inlet (4.1) and a mud outlet (4.2); the fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor (5) is provided with a gas collecting device (5.1), a second water inlet pump (5.2), a mud inlet pump (5.3), a three-phase separator (5.4), a sampling port (5.5), an exhaust valve (5.6), a water outlet pipe (5.7) and a reflux pump (5.8);
the water outlet (1.1) of the raw water tank (1) is connected with the water inlet (2.2) of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) through a first water inlet pump (2.1), and air is pumped into the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) through an aeration pump (2.3), a gas flowmeter (2.4) and an aeration disc (2.9) in sequence, and the pH value and the DO value of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor are monitored through a pH/DO real-time monitoring device (2.5); the water outlet (2.10) of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) is connected with the water inlet (3.1) of the intermediate water tank (3) through a drain valve (2.11); the sludge discharge port (2.12) of the short-cut nitrification/anaerobic ammonia oxidation SBR reactor (2) is connected with the water inlet (3.1) of the intermediate water tank (3) through a sludge discharge valve (2.13); the water outlet (3.2) of the intermediate water tank (3) is connected with the bottom of the fermentation coupling short-range denitrification/anaerobic ammonia oxidation UASB reactor (5) through a second water inlet pump (5.2); the mud outlet of the mud storage tank (4) is connected with the bottom of a fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor (5) through a mud inlet pump (5.3); the effluent of the fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor (5) is discharged through a water outlet pipe (5.7);
the method comprises the following steps:
1) System start-up
(1) Starting the short-cut nitrification/anaerobic ammonia oxidation SBR reactor: the inoculated sludge of the SBR reactor is short-cut nitrification activated sludge, the concentration of the inoculated sludge is controlled to be 3000-5000mg/L, and the sludge age is controlled to be 25-30d through sludge discharge; controlling COD concentration in a raw water tank to be 120-200mg/L, ammonia nitrogen concentration to be 200-400mg/L, controlling aeration stirring DO to be maintained at 1-1.5mg/L through a DO real-time monitoring device, setting the drainage ratio of a reactor to be 0.5-0.7, and running for 4-6 cycles each day, wherein each cycle comprises water inlet, aeration stirring, precipitation, drainage and idling; the reactor is operated under the conditions, and when the mass concentration ratio of ammonia nitrogen to nitrite nitrogen in the effluent is 1-1.32 and lasts for more than 15 days, partial short-cut nitrification is realized; then inoculating fixed filler attached with anaerobic ammonia oxidation bacteria in the SBR reactor, wherein the volume of the fixed filler accounts for 25-30% of the effective volume of the reactor, the DO of an aerobic section is controlled to be 1-1.5mg/L by a DO real-time monitoring device, the drainage ratio of the reactor is controlled to be 0.5-0.7, the reactor is operated for 3-4 cycles per day, each cycle comprises water inlet, anoxic stirring, aerobic stirring, anoxic stirring, precipitation, drainage and idling, the reactor is operated under the conditions, and when the concentration of ammonia nitrogen and nitrite nitrogen in the effluent is less than 1mg/L and the reactor is stably operated for more than 15 days, the short-cut nitrification/anaerobic ammonia oxidation SBR reactor is considered to be successfully started;
(2) Starting a fermentation coupling short-cut denitrification/anaerobic ammoxidation UASB reactor: firstly inoculating anaerobic ammonia oxidation granular sludge into a UASB reactor, wherein the concentration of the inoculated sludge is 3000-4000mg/L, the residence time of the UASB reactor is 3-5h, the sludge age is 20-25d, the inflow water adopts artificial water distribution with the mass ratio of nitrite nitrogen to ammonia nitrogen being 1.3, the TN concentration is 20-30mg/L, and when the total nitrogen removal rate reaches more than 90% and is continuously maintained for more than 15 days, the domestication of anaerobic ammonia oxidation bacteria in the UASB reactor is completed; inoculating short-cut denitrification activated sludge into a UASB reactor, controlling the sludge concentration in the reactor after inoculation to be 7000-8000mg/L, adopting artificial water distribution containing ammonia nitrogen, nitrate nitrogen and sodium acetate for water inflow, controlling the mass ratio of nitrate nitrogen to ammonia nitrogen in water inflow to be 1.5, controlling the total nitrogen concentration to be 20-40mg/L and the SCOD concentration to be 40-80mg/L, and completing the coupling of anaerobic ammonia oxidation and short-cut denitrification in the UASB reactor when the total nitrogen removal rate of system effluent reaches more than 85% and is continuously maintained for more than 15 days; finally, replacing sodium acetate with a carbon source generated by hydrolysis and acidification of the surplus sludge as a denitrifying carbon source to maintain the concentration of SCOD at 40-80mg/L, and considering that the fermentation coupling short-cut denitrification/anaerobic ammonia oxidation UASB reactor is successfully started when the total nitrogen removal rate reaches more than 85% and is continuously maintained for 15 days;
2) Operation of the system
(1) Opening a first water inlet pump, pumping sludge digestion liquid in a raw water tank into an SBR reactor, operating the reactor in an A/O/A (anaerobic/aerobic/anoxic) mode, starting a stirrer in a pre-anoxic short-cut nitrification/anaerobic ammonia oxidation reactor after water inlet is finished, performing anoxic stirring for 30min, and removing residual nitrate nitrogen in the upper period by using denitrification of organic matters in raw water; after the pre-anoxic section is finished, an aeration pump is started to aerate the short-cut nitrification/anaerobic ammonia oxidation reactor, ammonia nitrogen in raw water is partially converted into nitrite nitrogen, DO is controlled to be 1-1.5mg/L through a regulating gas flowmeter, the pH value and DO value are monitored through a pH/DO on-line monitoring device, aerobic stirring time is 120-180min, the aeration pump in the short-cut nitrification/anaerobic ammonia oxidation SBR reactor is closed after the aeration is finished, anoxic stirring is 180-210min, anaerobic ammonia oxidation on a biological film utilizes residual ammonia nitrogen and nitrite nitrogen to carry out autotrophic denitrification, then sediment is carried out for 30min to separate mud water, a first drain valve is opened, drain water enters an intermediate water tank, the drain water ratio is 70%, 3 periods are operated every day, and the rest time is idle;
(2) The second water inlet pump is started, sewage in the middle water tank is pumped into the UASB reactor, meanwhile, the residual sludge in the sludge storage tank is pumped into the UASB reactor through the sludge inlet pump, the sludge concentration in the UASB reactor is controlled to be 7000-8000mg/L, the hydraulic retention time is 3-5h, the sludge age is 20-25d, and the internal circulation reflux ratio is 100-120%; the effluent and sludge of the UASB reactor are discharged through a water outlet pipe and an exhaust valve.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539317A (en) * | 2013-10-28 | 2014-01-29 | 北京工业大学 | Device and method for nitrogen and phosphorus removal treatment by denitrification on high-ammonia nitrogen anaerobic ammonia oxidation effluent and domestic sewage |
| 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 |
| CN105461178A (en) * | 2016-01-09 | 2016-04-06 | 北京工业大学 | System and method for treating municipal sewage through short-cut denitrification-anaerobic ammonia oxidation after short-cut nitrification-anaerobic ammonia oxidation |
| CN105923774A (en) * | 2016-07-10 | 2016-09-07 | 彭永臻 | Device and method for realizing sludge digestive fluid advanced nitrogen removal by three-section type short-cut nitrification-anaerobic ammonia oxidation-short-cut denitrification process |
| CN106673205A (en) * | 2016-12-12 | 2017-05-17 | 同济大学 | Rapid start method for integrated autotrophic denitrification system |
| CN108675450A (en) * | 2018-05-07 | 2018-10-19 | 北京工业大学 | A kind of device and method for realizing municipal sewage efficient low-consume denitrogenation dephosphorizing |
| CN110002592A (en) * | 2019-05-05 | 2019-07-12 | 北京工业大学 | Short-cut denitrification-sludge fermentation coupling Anaerobic ammonium oxidation system processing sanitary sewage device and method |
| CN110054291A (en) * | 2019-04-24 | 2019-07-26 | 北京工业大学 | Low C/N is followed by short-cut denitrification/anaerobic ammonia oxidation process device and method than sanitary sewage short distance nitration/Anammox |
| CN112250178A (en) * | 2020-09-24 | 2021-01-22 | 北京工业大学 | Method and device for realizing advanced denitrification and sludge reduction of late landfill leachate by using sludge fermentation carbon source |
| CN113087134A (en) * | 2021-03-18 | 2021-07-09 | 北京工业大学 | Device and method for quickly realizing integration of partial shortcut nitrification/anaerobic ammonia oxidation by adding hydroxylamine and combining with low sludge age control |
| CN113200600A (en) * | 2021-05-14 | 2021-08-03 | 北京工业大学 | Device and method for treating high-ammonia-nitrogen organic matter wastewater by semi-shortcut nitrification-anaerobic ammonia oxidation and serial shortcut denitrification-anaerobic ammonia oxidation |
-
2021
- 2021-09-26 CN CN202111126559.5A patent/CN113800636B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539317A (en) * | 2013-10-28 | 2014-01-29 | 北京工业大学 | Device and method for nitrogen and phosphorus removal treatment by denitrification on high-ammonia nitrogen anaerobic ammonia oxidation effluent and domestic sewage |
| 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 |
| CN105461178A (en) * | 2016-01-09 | 2016-04-06 | 北京工业大学 | System and method for treating municipal sewage through short-cut denitrification-anaerobic ammonia oxidation after short-cut nitrification-anaerobic ammonia oxidation |
| CN105923774A (en) * | 2016-07-10 | 2016-09-07 | 彭永臻 | Device and method for realizing sludge digestive fluid advanced nitrogen removal by three-section type short-cut nitrification-anaerobic ammonia oxidation-short-cut denitrification process |
| CN106673205A (en) * | 2016-12-12 | 2017-05-17 | 同济大学 | Rapid start method for integrated autotrophic denitrification system |
| CN108675450A (en) * | 2018-05-07 | 2018-10-19 | 北京工业大学 | A kind of device and method for realizing municipal sewage efficient low-consume denitrogenation dephosphorizing |
| CN110054291A (en) * | 2019-04-24 | 2019-07-26 | 北京工业大学 | Low C/N is followed by short-cut denitrification/anaerobic ammonia oxidation process device and method than sanitary sewage short distance nitration/Anammox |
| CN110002592A (en) * | 2019-05-05 | 2019-07-12 | 北京工业大学 | Short-cut denitrification-sludge fermentation coupling Anaerobic ammonium oxidation system processing sanitary sewage device and method |
| CN112250178A (en) * | 2020-09-24 | 2021-01-22 | 北京工业大学 | Method and device for realizing advanced denitrification and sludge reduction of late landfill leachate by using sludge fermentation carbon source |
| CN113087134A (en) * | 2021-03-18 | 2021-07-09 | 北京工业大学 | Device and method for quickly realizing integration of partial shortcut nitrification/anaerobic ammonia oxidation by adding hydroxylamine and combining with low sludge age control |
| CN113200600A (en) * | 2021-05-14 | 2021-08-03 | 北京工业大学 | Device and method for treating high-ammonia-nitrogen organic matter wastewater by semi-shortcut nitrification-anaerobic ammonia oxidation and serial shortcut denitrification-anaerobic ammonia oxidation |
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