CN113105078B - Method for coupling anaerobic ammonia oxidation with landfill leachate MBR biochemical system - Google Patents
Method for coupling anaerobic ammonia oxidation with landfill leachate MBR biochemical system Download PDFInfo
- Publication number
- CN113105078B CN113105078B CN202110540497.6A CN202110540497A CN113105078B CN 113105078 B CN113105078 B CN 113105078B CN 202110540497 A CN202110540497 A CN 202110540497A CN 113105078 B CN113105078 B CN 113105078B
- Authority
- CN
- China
- Prior art keywords
- tank
- nitrification
- primary
- water inlet
- denitrification
- 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
Images
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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F3/006—Regulation methods for biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- 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
- C02F2301/043—Treatment of partial or bypass streams
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
Abstract
The invention discloses a method for coupling anaerobic ammonia oxidation with a landfill leachate MBR biochemical system, which belongs to the field of landfill leachate treatment and comprises a primary denitrification tank, a primary nitrification tank, a secondary denitrification tank, a secondary nitrification tank, a side flow denitrification tank, a side flow IFAS anaerobic ammonia oxidation tank and an external ultrafiltration system, wherein the side flow denitrification tank is communicated with a water inlet of the side flow IFAS anaerobic ammonia oxidation tank through a pipeline VII provided with a water inlet valve of the side flow IFAS anaerobic ammonia oxidation tank; the water outlet roller screen and the secondary nitrification tank in the side flow IFAS anaerobic ammonia oxidation tank are communicated with the external ultrafiltration system through a pipeline VIII provided with an external ultrafiltration system water inlet valve. The invention can realize the upgrading and reconstruction of the conventional MBR biochemical treatment system facility only by adding the side flow denitrification tank and the side flow IFAS anaerobic ammonia oxidation tank, and can only reduce the treatment load burden of the original external ultrafiltration system without increasing.
Description
Technical Field
The invention relates to a method for coupling anaerobic ammonia oxidation with a landfill leachate MBR biochemical system, and belongs to the field of landfill leachate treatment.
Background
The landfill leachate is high in pollutant concentration, COD concentration is 40000-80000 mg/L, BOD concentration is 20000-50000 mg/L, ammonia nitrogen concentration is 2000-3000 mg/L, TN concentration is 2500-3500 mg/L, and besides, a large amount of other metal, inorganic pollutants and the like exist.
At present, the garbage leachate is treated by adopting pretreatment, UASB/IC/UB anaerobic fermentation to remove about 80% of COD, then an external MBR biochemical treatment system is connected to further remove COD, ammonia nitrogen, TN and SS, then a filter membrane is received to further concentrate and remove dissolved COD which is not removed by the biochemical system, and finally an RO reverse osmosis recycling clear water is connected, and a DTRO system further reduces the amount of the RO concentrated water in the front, wherein the external MBR biochemical treatment system generally comprises a primary denitrification tank, a primary nitrification tank, a secondary denitrification tank, a secondary nitrification tank and an external tubular membrane system; however, as the dominant bacteria of the activated sludge in the denitrification process are heterotrophic bacteria, a large amount of biodegradable COD carbon source needs to be consumed in the denitrification process, especially, because the removal rate of the easy COD in the influent water by the UASB/IC/UBF anaerobic fermentation section in front of which the removal amount of ammonia nitrogen and TN is limited is even 80%, the biodegradable COD required by the denitrification removal of nitrate nitrogen in the denitrification tank at the back, especially the secondary denitrification tank is seriously insufficient, and a large amount of carbon source needs to be added when TN is removed; on the other hand, the nitrification process of high ammonia nitrogen also needs a large amount of aeration energy consumption.
The anaerobic ammonia oxidation process is a novel, efficient and low-cost sewage biological autotrophic nitrogen removal process, is a biological reaction for generating nitrogen by using ammonia nitrogen as an electron donor and nitrite nitrogen as an electron acceptor by anaerobic ammonia oxidation bacteria, and is the most economical and concise process in the field of biological nitrogen removal of wastewater at present. Partial nitrification and anaerobic ammonia oxidation-PNA is achieved by combining Partial nitrification and complete autotrophic denitrification of anammox (Lackner), aerobic Ammonia Oxidizing Bacteria (AOB) oxidize 57% of ammonia nitrogen in the feed water to nitrite nitrogen under aerobic conditions; anaerobic ammonium oxidation bacteria (AMX) take nitrite nitrogen as an electron acceptor, and oxidize the ammonia nitrogen in the rest proportion into nitrogen gas to achieve the aim of removing the ammonia nitrogen/TN; according to the anaerobic ammonia oxidation stoichiometry, 11% of the oxidized nitrogen is produced as nitrate nitrogen, and the oxygen demand and the demand for organic carbon sources are reduced by 57% and 86%, respectively.
Partial Nitrosation and Anammox (PNA) can be carried out in a single mixed-membrane (IFAS-Integrated Biofilm & Activated Sludge) bioreactor in which a Moving Bed Biofilm Reactor (MBBR) suspended packing and Activated Sludge coexist, in which the Dissolved Oxygen (DO) concentration is controlled between 0.5-1.5mg/l, aerobic Ammonia Oxidizing Bacteria (AOB) mainly grow in the Activated Sludge, while anaerobic Biofilm mainly adheres to the MBBR suspended packing, and partial nitrosation and anammox reactions occur simultaneously in the same IFAS mixed-membrane bioreactor.
Disclosure of Invention
The invention aims to provide a method for coupling anaerobic ammonia oxidation with a landfill leachate MBR biochemical system, aiming at overcoming the defects of the treatment process of the existing landfill leachate MBR biochemical treatment system, which can be applied to the reconstruction and new construction of a facility for treating landfill leachate by a two-stage denitrification/nitrification (AO) + MBR biochemical treatment system.
The technical scheme of the invention is as follows:
a method for coupling anaerobic ammonia oxidation with a landfill leachate MBR biochemical system comprises a primary denitrification tank, a primary nitrification tank, a secondary denitrification tank, a secondary nitrification tank, a lateral flow denitrification tank, a lateral flow IFAS anaerobic ammonia oxidation tank, an external ultrafiltration system concentrated solution backflow inlet, a primary nitrification solution backflow inlet, a primary denitrification tank stirrer, a primary nitrification jet aerator, a primary nitrification jet pump water outlet valve, a primary nitrification aeration jet pump, a primary nitrification liquid backflow control valve, a secondary denitrification tank stirrer, a carbon source feeding port, a secondary nitrification jet aerator, a secondary nitrification jet pump water outlet valve, a secondary nitrification aeration jet pump, an external ultrafiltration system concentrated solution backflow valve and an aeration blower, wherein, the water inlet valve of the primary denitrification tank is communicated with the water inlet of the primary denitrification tank through a pipeline I; the primary denitrification tank is communicated with a water inlet of the primary nitrification tank through a pipeline II provided with a water inlet valve of the primary nitrification tank; the first-stage nitrification tank is communicated with a water inlet of the second-stage denitrification tank through a pipeline III provided with a water inlet valve of the second-stage denitrification tank; the secondary denitrification tank is communicated with a water inlet of the secondary nitrification tank through a pipeline IV provided with a water inlet valve of the secondary nitrification tank; the first-stage nitrification tank is communicated with a nitrification liquid inlet of the side-flow denitrification tank through a pipeline V provided with a nitrification liquid inlet valve of the side-flow denitrification tank; a pipeline VI provided with a water inlet valve of the side flow denitrification tank is communicated with a water inlet of the side flow denitrification tank; the side flow denitrification tank is communicated with a water inlet of the side flow IFAS anaerobic ammonia oxidation tank through a pipeline VII provided with a water inlet valve of the side flow IFAS anaerobic ammonia oxidation tank; the water outlet roller screen and the secondary nitrification tank in the side flow IFAS anaerobic ammonia oxidation tank are communicated with the external ultrafiltration system through a pipeline VIII provided with an external ultrafiltration system water inlet valve.
Furthermore, the aeration blower is respectively communicated with the primary nitrification jet aerator, the secondary nitrification jet aerator and the perforated aeration pipe through a primary nitrification tank aeration control valve, a secondary nitrification tank aeration control valve and a side flow IFAS anaerobic ammonia oxidation tank aeration control valve.
Furthermore, a perforated aerator pipe, a suspended filler and a side flow IFAS anammox tank stirrer are arranged in the side flow IFAS anammox tank.
The invention has the beneficial effects that:
1) the landfill leachate treated by the front-end anaerobic fermentation is still characterized by high concentration of ammonia nitrogen and TN and greatly reduced C to N ratio, if the ammonia nitrogen is required to be removed by conventional anoxic/aerobic deep nitrification and the TN is required to be removed by deep denitrification, higher energy is required and an additional carbon source is required to be added, so the method can reduce the energy consumption of aeration amount of a first-stage nitrification tank and a second-stage nitrification tank by adding the sidestream IFAS anaerobic ammonia oxidation tank for autotrophic denitrification, and also save the adding cost of the additional carbon source.
2) Compared with the conventional two-stage AO + MBR biochemical treatment system of the landfill leachate, the invention changes the water inflow from the anaerobic fermentation system into two-point water inflow, and about 70-80% of the water inflow from the anaerobic fermentation system firstly enters a primary denitrification tank like the conventional MBR biochemical treatment system of the landfill leachate; the other 20-30% of water enters the newly added side-stream denitrification tank, and meanwhile, part (20-30%) of nitrified liquid in the first-stage nitrification tank enters the side-stream denitrification tank through a side-stream pipeline; on one hand, the hydraulic and pollutant loads of the primary denitrification tank, the primary nitrification tank, the secondary denitrification tank and the secondary nitrification tank are reduced, and the effect of load distribution is achieved; on the other hand, part of the inlet water from the anaerobic fermentation system directly enters the side-stream denitrification tank, so that nitrate nitrogen in part of nitrified liquid from the primary nitrification tank fully utilizes a high-quality carbon source in part of inlet water from the anaerobic fermentation system to carry out rapid denitrification; therefore, the energy consumption required by the conventional landfill leachate MBR biochemical treatment system for nitrification and the carbon source adding amount in the secondary denitrification tank are saved, and the COD in partial water is subjected to anoxic removal through the denitrification process of the side flow denitrification tank.
3) The newly added sidestream denitrification tank has the effects that most of biodegradable COD in point-by-point inflow water and most of nitrate nitrogen in mixed liquor from the primary nitrification tank can be removed through preposed denitrification, the mixed liquor of low-concentration biodegradable COD and low-concentration nitrate nitrogen can be fully ensured to further flow into the sidestream IFAS anaerobic ammonia oxidation tank, the ammonia nitrogen concentration in the mixed liquor is still kept at a higher level, and the result fully meets the inflow conditions required by partial nitrosation and anaerobic ammonia oxidation (PNA), namely the inflow requires low COD and nitrate nitrogen concentration, and the inflow ammonia nitrogen concentration needs to be kept at a higher level.
4) The invention realizes the multi-point water inlet operation by directly flowing part of the inlet water from the anaerobic fermentation system into the side flow denitrification tank, and the flow splitting effect of the side flow denitrification tank on the inlet water flow reduces the backflow amount of the external ultrafiltration system which flows back to the primary nitrification tank through the concentrate backflow inlet of the external ultrafiltration system under the condition of maintaining the concentration of MLSS in the MBR biochemical treatment system unchanged, thereby further reducing the operation load and the operation pressure of the external ultrafiltration system.
5) The sludge concentration in a primary denitrification tank, a primary nitrification tank, a secondary denitrification tank and a secondary nitrification tank of the conventional landfill leachate MBR biochemical treatment system device is generally maintained at about 15g/L, the high MLSS concentration of a biochemical system causes the large stirring difficulty of the denitrification tank and the necessity of adopting a special jet aerator for the nitrification tank; because the invention adopts the reason of two-point water inflow, the concentration of suspended sludge in the side flow IFAS anaerobic ammonia oxidation tank is lower than that of a conventional garbage percolate MBR biochemical treatment system; therefore, the activated sludge can be mixed and the suspended filler can be fully fluidized under the anaerobic ammonia oxidation aeration condition with low DO without opening a standby stirrer of the side flow IFAS anaerobic ammonia oxidation tank arranged in the side flow IFAS anaerobic ammonia oxidation tank in the actual operation process.
6) The mud-model mixed anaerobic ammonia oxidation biochemical system in the sidestream IFAS anaerobic ammonia oxidation tank is characterized in that aerobic Ammonia Oxidizing Bacteria (AOB) are fully ensured to mainly exist in activated sludge growing in suspension under the condition of low DO; anaerobic ammonia oxidizing bacteria mainly grow on the suspended filler, and the biomass of the anaerobic ammonia oxidizing bacteria on the suspended filler in the side-stream IFAS anaerobic ammonia oxidation tank is kept at an ideal level through the interception effect of the screen of the water outlet roller.
7) The optimal suitable temperature of the anaerobic ammonia oxidation process is about 30-35 degrees, the general operating temperature of a nitrification tank of a conventional landfill leachate MBR biochemical treatment system device is also in the interval, and the additional heat preservation is not needed in the mode of adding a side flow IFAS anaerobic ammonia oxidation tank to perform side flow anaerobic ammonia oxidation autotrophic denitrification.
8) When compared with the existing garbage leachate treatment facility before design, the constructed garbage leachate treatment facility has the defects that the quality of inlet water is deteriorated, the HRT of a biochemical system of the original facility is smaller, or the total effluent standard is improved, and the original facility needs to be upgraded and modified, the sidestream autotrophic nitrogen removal mode is realized under the conditions that the inlet water quantity and the hydraulic load of a subsequent external ultrafiltration system are not increased, and any investment is not required to be added to the external ultrafiltration system, namely: the upgrading and reconstruction of the original MBR biochemical treatment system facility can be realized only by adding a side flow denitrification tank and a side flow IFAS anaerobic ammonia oxidation tank, the increase is avoided, and the treatment load burden of the original external ultrafiltration system can be reduced.
9) The invention is mainly characterized in that while maintaining the high nitrification and denitrification treatment efficiency of the conventional external MBR biochemical treatment system device for the landfill leachate due to high sludge concentration, partial anaerobic ammonia oxidation removal of ammonia nitrogen in inlet water is realized by adding a side flow facility, the operation cost is reduced, the quality of outlet water is ensured, the extension, upgrade and modification of the original treatment facility are easy, the engineering feasibility is strong, and the engineering and operation technical risks are low.
Drawings
FIG. 1 is a schematic diagram of a conventional landfill leachate MBR biochemical treatment system.
Fig. 2 is a schematic of the present invention.
Wherein: 1. a primary denitrification tank water inlet, 2, a lateral flow denitrification tank water inlet, 3, a primary denitrification tank, 4, a primary nitrification tank, 5, a secondary denitrification tank, 6, a secondary nitrification tank, 7, a lateral flow denitrification tank, 8, a lateral flow IFAS anaerobic ammonia oxidation tank, 9, an external ultrafiltration system concentrated liquid backflow inlet, 10, a primary nitrified liquid backflow inlet, 11, a primary denitrification tank stirrer, 12, a primary nitrification tank water inlet valve, 13, a primary nitrification tank water inlet, 14, a primary nitrification jet aerator, 15, a primary nitrification jet pump water outlet valve, 16, a primary nitrification aeration jet pump, 17, a primary nitrified liquid backflow pump, 18, a primary nitrified liquid backflow control valve, 19, a secondary denitrification water inlet valve, 20, a secondary denitrification tank water inlet, 21, a secondary denitrification tank, 22, a carbon source feeding port, 23, a secondary nitrification tank water inlet valve, 24, A water inlet of a secondary nitrification tank, 25, a secondary nitrification jet aerator, 26, a water outlet valve of the secondary nitrification jet pump, 27, a secondary nitrification aeration jet pump, 28, an external ultrafiltration system water inlet valve, 29, an external ultrafiltration system, 30, an external ultrafiltration system concentrated liquid reflux valve, 31, a water inlet valve of a primary denitrification tank, 32, a lateral denitrification tank water inlet valve, 33, a lateral denitrification tank nitrified liquid water inlet valve, 34, a lateral denitrification tank nitrified liquid water inlet, 35, a lateral IFAS anaerobic ammonia oxidation tank water inlet valve, 36, a lateral IFAS anaerobic ammonia oxidation tank water inlet, 37, a perforated aeration pipe, 38, a suspended filler, 39, a water outlet roller screen, 40, an aeration blower, 41, a primary nitrification tank aeration control valve, 42, a secondary nitrification tank aeration control valve, 43, a lateral IFAS anaerobic ammonia oxidation tank aeration control valve, 44, a pipeline I, 45, a pipeline II, 46 and a pipeline III, 47. pipelines IV and 48, pipelines V and 49, pipelines VI and 50, pipelines VII and 51, pipelines VIII and 52 and a side-stream IFAS anaerobic ammonia oxidation tank stirrer.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 2.
A method for coupling anaerobic ammonia oxidation with a landfill leachate MBR biochemical system comprises a primary denitrification tank 3, a primary nitrification tank 4, a secondary denitrification tank 5, a secondary nitrification tank 6, a lateral flow denitrification tank 7, a lateral flow IFAS anaerobic ammonia oxidation tank 8, an external ultrafiltration system concentrated solution backflow inlet 9, a primary nitrification solution backflow inlet 10, a primary denitrification tank stirrer 11, a primary nitrification jet aerator 14, a primary nitrification jet pump water outlet valve 15, a primary nitrification aeration jet pump 16, a primary nitrification liquid backflow pump 17, a primary nitrification solution backflow control valve 18, a secondary denitrification tank stirrer 21, a carbon source adding port 22, a secondary nitrification jet aerator 25, a secondary nitrification jet pump water outlet valve 26, a secondary nitrification aeration jet pump 27, an external ultrafiltration system 29, an external ultrafiltration system concentrated solution backflow valve 30 and an aeration blower 40, wherein, the water inlet valve 31 of the primary denitrification tank is communicated with the water inlet 1 of the primary denitrification tank through a pipeline I44; the primary denitrification tank 3 is communicated with a water inlet 13 of the primary nitrification tank through a pipeline II 45 provided with a water inlet valve 12 of the primary nitrification tank; the primary nitrification tank 4 is communicated with a water inlet 20 of the secondary denitrification tank through a pipeline III 46 provided with a water inlet valve 19 of the secondary denitrification tank; the secondary denitrification tank 5 is communicated with a water inlet 24 of the secondary nitrification tank through a pipeline IV 47 provided with a water inlet valve 23 of the secondary nitrification tank; the first-stage nitrification tank 4 is communicated with a nitrification liquid inlet 34 of the side-flow denitrification tank through a pipeline V48 provided with a nitrification liquid inlet valve 33 of the side-flow denitrification tank; a pipeline VI 49 provided with a side flow denitrification tank water inlet valve 32 is communicated with the side flow denitrification tank water inlet 2; the side flow denitrification tank 7 is communicated with a water inlet 36 of the side flow IFAS anaerobic ammonia oxidation tank through a pipeline VII 50 provided with a water inlet valve 35 of the side flow IFAS anaerobic ammonia oxidation tank; the water outlet roller screen 39 and the secondary nitrification tank 6 in the side flow IFAS anammox tank 8 are communicated with an external ultrafiltration system 29 through a pipeline VIII 51 provided with an external ultrafiltration system water inlet valve 28.
Further, the aeration blower 40 is respectively communicated with the primary nitrification jet aerator 14, the secondary nitrification jet aerator 25 and the perforated aeration pipe 37 through a primary nitrification tank aeration control valve 41, a secondary nitrification tank aeration control valve 42 and a side flow IFAS anaerobic ammonia oxidation tank aeration control valve 43.
Further, a perforated aerator pipe 37, a suspended filler 38 and a side flow IFAS anammox tank stirrer 52 are arranged in the side flow IFAS anammox tank 8.
The technical scheme of the invention comprises the following steps:
1) most of the water (70-80%) of the inlet water from the anaerobic fermentation system flows into the primary denitrification tank from a pipeline I provided with a water inlet valve of the primary denitrification tank through a water inlet of the primary denitrification tank; and the other part of the water (20-30%) flows into the side-stream denitrification tank through a water inlet of the side-stream denitrification tank through a pipeline VI provided with a water inlet valve of the side-stream denitrification tank.
2) The influent water flowing into the first-stage denitrification tank is mixed with the effluent concentrated solution of the external ultrafiltration system from the external ultrafiltration system concentrated solution reflux valve of the external ultrafiltration system and then passes through the external ultrafiltration system concentrated solution reflux inlet, and is also mixed with the internal reflux nitrification solution flowing into the first-stage nitrification tank from the first-stage nitrification tank through the first-stage nitrification solution reflux pump, the first-stage nitrification solution reflux control valve and the first-stage nitrification solution reflux inlet to carry out denitrification for removing nitrate nitrogen biochemical reaction; the mixed liquid after denitrification flows into the primary nitrification tank through a water inlet valve of the primary nitrification tank, a pipeline II and a water inlet of the primary nitrification tank, primary aerobic nitrification is completed under the aerobic aeration condition of the primary nitrification jet aerator, most of biodegradable COD is removed, and most of ammonia nitrogen is oxidized into nitrate nitrogen.
3) Most (70-80%) of the mixed liquor from the primary nitrification tank flows into the secondary denitrification tank through a secondary denitrification water inlet valve, a pipeline III and a secondary denitrification tank water inlet, and nitrate nitrogen in the mixed liquor utilizes a small amount of residual biochemical COD in the mixed liquor and a carbon source added through a carbon source adding port to carry out secondary denitrification nitrogen removal; and the mixed liquid after the secondary denitrification flows into the secondary nitrification tank through a water inlet valve of the secondary nitrification tank, a pipeline IV and a water inlet of the secondary nitrification tank, the residual biodegradable COD in the mixed liquid is removed in the secondary nitrification tank under the aerobic aeration condition of the secondary nitrification jet aerator, and the residual ammonia nitrogen is oxidized into nitrate nitrogen.
4) A small part (20-30%) of mixed liquor from the first-stage nitrification tank flows into the side-stream denitrification tank through the side-stream valve of the first-stage nitrification tank, the pipeline V and the nitrification liquid water inlet of the side-stream denitrification tank, and biodegradable COD in most of branch point water inflow and most of nitrate nitrogen in a small part (20-30%) of mixed liquor from the first-stage nitrification tank are removed in the side-stream denitrification tank through pre-denitrification; then, the wastewater flows into the lateral flow IFAS anaerobic ammonia oxidation tank from the lateral flow denitrification tank through a lateral flow IFAS anaerobic ammonia oxidation tank water inlet valve, a pipeline VII and a lateral flow IFAS anaerobic ammonia oxidation tank water inlet, under the condition that the perforated aeration pipe maintains the internal low DO operation condition, part of ammonia nitrogen in the mixed solution is oxidized into nitrite nitrogen by aerobic Ammonia Oxidizing Bacteria (AOB) mainly existing in the suspended growth activated sludge, and the anaerobic ammonia oxidizing bacteria mainly growing on the suspended filler perform anaerobic ammonia oxidation biochemical reaction by utilizing the nitrite nitrogen in the mixed solution and unoxidized ammonia nitrogen to generate nitrogen and remove TN.
5) The aeration blower is respectively communicated with the primary nitrification jet aerator, the secondary nitrification jet aerator and the perforated aeration pipe through a primary nitrification tank aeration control valve, a secondary nitrification tank aeration control valve and a side flow IFAS anaerobic ammonia oxidation tank aeration control valve, and the aeration blowers are respectively controlled to provide the required aeration amount.
6) The mixed liquor from the secondary nitrification tank and the mixed liquor flowing through the water outlet roller screen in the sidestream IFAS anaerobic ammonia oxidation tank are mixed and then enter the external ultrafiltration system through the water inlet valve of the external ultrafiltration system, the external ultrafiltration clear liquor of the external ultrafiltration system flows out of the device, and the concentrated liquor flows back to the primary denitrification tank.
The above description is only a preferred embodiment of the present invention, and these embodiments are based on different implementations of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein should be covered within the scope of the present invention, and therefore, the scope of the present invention should be subject to the protection scope of the claims.
Claims (3)
1. A method for coupling anaerobic ammonia oxidation with a landfill leachate MBR biochemical system is characterized in that, which comprises a primary denitrification tank, a primary nitrification tank, a secondary denitrification tank, a secondary nitrification tank, a lateral flow denitrification tank, a lateral flow IFAS anaerobic ammonia oxidation tank, an external ultrafiltration system concentrated solution backflow inlet, a primary nitrification solution backflow inlet, a primary denitrification tank stirrer, a primary nitrification jet aerator, a primary nitrification jet pump water outlet valve, a primary nitrification aeration jet pump, a primary nitrification liquid backflow control valve, a secondary denitrification tank stirrer, a carbon source adding port, a secondary nitrification jet aerator, a secondary nitrification jet pump water outlet valve, a secondary nitrification aeration jet pump, an external ultrafiltration system concentrated solution backflow valve and an aeration blower, wherein, the water inlet valve of the primary denitrification tank is communicated with the water inlet of the primary denitrification tank through a pipeline I; the primary denitrification tank is communicated with a water inlet of the primary nitrification tank through a pipeline II provided with a water inlet valve of the primary nitrification tank; the first-stage nitrification tank is communicated with a water inlet of the second-stage denitrification tank through a pipeline III provided with a water inlet valve of the second-stage denitrification tank; the secondary denitrification tank is communicated with a water inlet of the secondary nitrification tank through a pipeline IV provided with a water inlet valve of the secondary nitrification tank; the primary nitrification tank is communicated with a nitrification liquid water inlet of the side-flow denitrification tank through a pipeline V provided with a nitrification liquid water inlet valve of the side-flow denitrification tank; a pipeline VI provided with a water inlet valve of the side flow denitrification tank is communicated with a water inlet of the side flow denitrification tank; the side stream denitrification tank is communicated with a water inlet of the side stream IFAS anammox tank through a pipeline VII provided with a water inlet valve of the side stream IFAS anammox tank; the water outlet roller screen mesh and the secondary nitrification tank in the sidestream IFAS anaerobic ammonia oxidation tank are communicated with the external ultrafiltration system through a pipeline VIII provided with an external ultrafiltration system water inlet valve;
the method comprises the following steps:
s1: 70-80% of the water quantity of inlet water from the anaerobic fermentation system flows into the primary denitrification tank from a pipeline I provided with a water inlet valve of the primary denitrification tank through a water inlet of the primary denitrification tank; 20-30% of the inflow water flows into the side-stream denitrification tank through a water inlet of the side-stream denitrification tank through a pipeline VI provided with a water inlet valve of the side-stream denitrification tank;
s2: the influent water flowing into the first-stage denitrification tank is mixed with the effluent concentrated solution of the external ultrafiltration system from the external ultrafiltration system concentrated solution reflux valve of the external ultrafiltration system and then passes through the external ultrafiltration system concentrated solution reflux inlet, and is also mixed with the internal reflux nitrification solution flowing into the first-stage nitrification tank from the first-stage nitrification tank through the first-stage nitrification solution reflux pump, the first-stage nitrification solution reflux control valve and the first-stage nitrification solution reflux inlet to carry out denitrification for removing nitrate nitrogen biochemical reaction; the mixed solution after denitrification flows into the primary nitrification tank through a water inlet valve of the primary nitrification tank, a pipeline II and a water inlet of the primary nitrification tank, primary aerobic nitrification is completed under the aerobic aeration condition of the primary nitrification jet aerator, most of biodegradable COD is removed, and most of ammonia nitrogen is oxidized into nitrate nitrogen;
s3: 70-80% of mixed liquor from the primary nitrification tank flows into the secondary denitrification tank through the secondary denitrification water inlet valve, the pipeline III and the water inlet of the secondary denitrification tank, and nitrate nitrogen in the mixed liquor utilizes a small amount of residual biochemical COD in the mixed liquor and a carbon source added through the carbon source adding port to carry out secondary denitrification nitrogen removal; the mixed liquid after the secondary denitrification flows into a secondary nitrification tank through a water inlet valve of the secondary nitrification tank, a pipeline IV and a water inlet of the secondary nitrification tank, the residual biodegradable COD in the mixed liquid is removed in the secondary nitrification tank under the aerobic aeration condition of a secondary nitrification jet aerator, and the residual ammonia nitrogen is oxidized into nitrate nitrogen;
s4: the 20-30% mixed liquor from the first-level nitrification tank flows into the side-stream denitrification tank through a side-stream valve of the first-level nitrification tank, a pipeline V and a nitrified liquid inlet of the side-stream denitrification tank, and the biodegradable COD in most of the branch water inflow and most of the nitrate nitrogen in 20-30% mixed liquor from the first-level nitrification tank are removed in the side-stream denitrification tank through pre-denitrification; then, flowing into a sidestream IFAS anaerobic ammonia oxidation tank from a sidestream denitrification tank through a sidestream IFAS anaerobic ammonia oxidation tank water inlet valve, a pipeline VII and a sidestream IFAS anaerobic ammonia oxidation tank water inlet, oxidizing part of ammonia nitrogen in the mixed solution into nitrite nitrogen by aerobic Ammonia Oxidizing Bacteria (AOB) mainly existing in the suspended growth activated sludge under the condition that a perforated aeration pipe maintains the internal low DO operation condition, and performing anaerobic ammonia oxidation biochemical reaction by using the nitrite nitrogen in the mixed solution and unoxidized ammonia nitrogen to generate nitrogen and remove TN by the anaerobic ammonia oxidizing bacteria mainly growing on the suspended filler;
s5: the aeration blower is respectively communicated with the primary nitrification jet aerator, the secondary nitrification jet aerator and the perforated aeration pipe through a primary nitrification tank aeration control valve, a secondary nitrification tank aeration control valve and a side flow IFAS anaerobic ammonia oxidation tank aeration control valve, and respectively controls and provides the required aeration amount of the primary nitrification jet aerator, the secondary nitrification jet aerator and the perforated aeration pipe;
s6: and the mixed liquid from the secondary nitrification tank and the mixed liquid flowing through the water outlet roller screen in the sidestream IFAS anaerobic ammonia oxidation tank are mixed and then enter the external ultrafiltration system through the water inlet valve of the external ultrafiltration system, the external ultrafiltration clear liquid in the external ultrafiltration system flows out from the external ultrafiltration clear liquid outlet, and the concentrated liquid flows back to the primary denitrification tank.
2. The method of claim 1, wherein the aeration blower is respectively communicated with the primary nitrification jet aerator, the secondary nitrification jet aerator and the perforated aeration pipe through a primary nitrification tank aeration control valve, a secondary nitrification tank aeration control valve and a side flow IFAS anaerobic ammonia oxidation tank aeration control valve.
3. The method of anammox coupled landfill leachate MBR biochemical system according to claim 1, wherein a perforated aerator pipe, suspended packing and a sidestream IFAS anammox tank agitator are provided in the sidestream IFAS anammox tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110540497.6A CN113105078B (en) | 2021-05-18 | 2021-05-18 | Method for coupling anaerobic ammonia oxidation with landfill leachate MBR biochemical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110540497.6A CN113105078B (en) | 2021-05-18 | 2021-05-18 | Method for coupling anaerobic ammonia oxidation with landfill leachate MBR biochemical system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113105078A CN113105078A (en) | 2021-07-13 |
| CN113105078B true CN113105078B (en) | 2022-09-20 |
Family
ID=76722633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110540497.6A Active CN113105078B (en) | 2021-05-18 | 2021-05-18 | Method for coupling anaerobic ammonia oxidation with landfill leachate MBR biochemical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113105078B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0889990A (en) * | 1994-09-20 | 1996-04-09 | Takuo Yukimoto | Two-line parallel oxidation facility |
| CN104334500A (en) * | 2012-04-04 | 2015-02-04 | 维利亚水务解决方案及技术支持公司 | Process comprising anammox bacteria on biofilm carriers for removing ammonium from a wastewater stream |
| CA2943072A1 (en) * | 2014-03-20 | 2015-09-24 | General Electric Company | Wastewater treatment with primary treatment and mbr or mabr-ifas reactor |
| CN110745948A (en) * | 2019-09-27 | 2020-02-04 | 中车环境科技有限公司 | Sectional water inlet deep dephosphorization and denitrification process |
| CN211546258U (en) * | 2019-12-18 | 2020-09-22 | 辽宁山水清环保科技有限公司 | Combined sewage treatment equipment |
| CN112456643A (en) * | 2020-10-31 | 2021-03-09 | 北京工业大学 | System and method for realizing partial anaerobic ammonia oxidation deep nitrogen and phosphorus removal by circulating and alternately utilizing main flow and side flow zone biomembrane of urban sewage treatment plant |
-
2021
- 2021-05-18 CN CN202110540497.6A patent/CN113105078B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0889990A (en) * | 1994-09-20 | 1996-04-09 | Takuo Yukimoto | Two-line parallel oxidation facility |
| CN104334500A (en) * | 2012-04-04 | 2015-02-04 | 维利亚水务解决方案及技术支持公司 | Process comprising anammox bacteria on biofilm carriers for removing ammonium from a wastewater stream |
| CA2943072A1 (en) * | 2014-03-20 | 2015-09-24 | General Electric Company | Wastewater treatment with primary treatment and mbr or mabr-ifas reactor |
| CN110745948A (en) * | 2019-09-27 | 2020-02-04 | 中车环境科技有限公司 | Sectional water inlet deep dephosphorization and denitrification process |
| CN211546258U (en) * | 2019-12-18 | 2020-09-22 | 辽宁山水清环保科技有限公司 | Combined sewage treatment equipment |
| CN112456643A (en) * | 2020-10-31 | 2021-03-09 | 北京工业大学 | System and method for realizing partial anaerobic ammonia oxidation deep nitrogen and phosphorus removal by circulating and alternately utilizing main flow and side flow zone biomembrane of urban sewage treatment plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113105078A (en) | 2021-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106830324B (en) | Sectional water inlet A2Device and method for enhancing biological nitrogen and phosphorus removal by adopting/O (oxygen/phosphorus) process | |
| CN107162193B (en) | Device and method for treating domestic sewage by low-oxygen nitrification coupled with short-range denitrification anaerobic ammonia oxidation | |
| CN110054291B (en) | Device and method for connecting short-cut denitrification/anaerobic ammonia oxidation process after short-cut nitrification/anaerobic ammonia oxidation of low-C/N-ratio domestic sewage | |
| CN108298687B (en) | Biological denitrification method for landfill leachate | |
| CN110002594B (en) | Device and method for realizing shortcut nitrification-anaerobic ammonia oxidation based on hydroxylamine side inhibition | |
| CN107381815B (en) | Device and method for realizing deep denitrification of domestic sewage by mainstream endogenous short-range denitrification/anaerobic ammonia oxidation process | |
| US20140197097A1 (en) | Simultaneous Anoxic Biological Phosphorus and Nitrogen Removal with Energy Recovery | |
| CN109160670B (en) | Denitrification method of municipal sewage denitrification filter based on short-cut denitrification and anaerobic ammonia oxidation | |
| CN109368928A (en) | A kind of dephosphorization denitrogenation devices and methods therefor based on short-cut denitrification reaction | |
| CN112850894A (en) | Device and method for advanced denitrification of industrial wastewater through anaerobic ammonia oxidation | |
| CN109205954A (en) | Light electrolysis catalysis oxidation, biochemical treatment high-concentration waste hydraulic art | |
| CN113428979B (en) | Method for synchronously treating nitrate wastewater and domestic sewage by two-stage reinforced PDAMOX process based on biological membrane | |
| CN109368782B (en) | Sewage shortcut nitrification method and system based on side-stream SBR (sequencing batch reactor) enhanced continuous flow process | |
| US10556816B2 (en) | Wastewater treatment apparatus | |
| CN112607861B (en) | Process for treating municipal sewage by using excess sludge fermentation carbon source to strengthen denitrification dephosphorization, partial short-cut denitrification and anaerobic ammonia oxidation | |
| CN114735819B (en) | Method for treating domestic sewage by ABR pretreatment-short-range denitrification anaerobic ammonia oxidation | |
| CN104512964A (en) | Sludge side treatment-based urban sewage short-cut nitrogen removal method | |
| CN104817178A (en) | Short-range denitrification/dephosphorization device and method based on sludge side pretreatment | |
| CN114180715A (en) | Continuous flow short-cut denitrification coupling anaerobic ammonia oxidation enhanced flora enrichment device and method | |
| CN114212885A (en) | Device and method for treating mainstream domestic sewage with low carbon-nitrogen ratio by two-stage whole-course ammonia oxidation-short-range denitrification anaerobic ammonia oxidation | |
| CN113233586A (en) | Multi-mode micro-aerobic aeration AAO-MBR high-efficiency energy-saving sewage treatment device and method | |
| CN113105078B (en) | Method for coupling anaerobic ammonia oxidation with landfill leachate MBR biochemical system | |
| 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 | |
| CN116553722A (en) | A/A/O sewage treatment system and method for reducing cost and enhancing efficiency | |
| CN215102712U (en) | Anaerobic ammonia oxidation coupling landfill leachate MBR biochemical system's device |
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 | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method of anaerobic ammonia oxidation coupled with MBR biochemical system of landfill leachate Effective date of registration: 20230217 Granted publication date: 20220920 Pledgee: Haidian Beijing science and technology enterprise financing Company limited by guarantee Pledgor: BEIJING GUOHUAN RHINE ENVIRONMENTAL Co.,Ltd. Registration number: Y2023110000069 |