CN220845728U - Nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate - Google Patents
Nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate Download PDFInfo
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- CN220845728U CN220845728U CN202322546289.4U CN202322546289U CN220845728U CN 220845728 U CN220845728 U CN 220845728U CN 202322546289 U CN202322546289 U CN 202322546289U CN 220845728 U CN220845728 U CN 220845728U
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- 238000007034 nitrosation reaction Methods 0.000 title claims abstract description 42
- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 133
- 238000006243 chemical reaction Methods 0.000 claims abstract description 80
- 239000010802 sludge Substances 0.000 claims abstract description 45
- 239000002351 wastewater Substances 0.000 claims abstract description 36
- 238000005273 aeration Methods 0.000 claims abstract description 25
- 238000004062 sedimentation Methods 0.000 claims abstract description 22
- 239000012528 membrane Substances 0.000 claims abstract description 19
- 238000005276 aerator Methods 0.000 claims abstract description 18
- 238000010992 reflux Methods 0.000 claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 13
- 229910021529 ammonia Inorganic materials 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000011490 mineral wool Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 12
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 12
- 230000009935 nitrosation Effects 0.000 description 10
- 241001453382 Nitrosomonadales Species 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- LPUQAYUQRXPFSQ-DFWYDOINSA-M monosodium L-glutamate Chemical compound [Na+].[O-]C(=O)[C@@H](N)CCC(O)=O LPUQAYUQRXPFSQ-DFWYDOINSA-M 0.000 description 1
- 235000013923 monosodium glutamate Nutrition 0.000 description 1
- 239000004223 monosodium glutamate Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model relates to a nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate, wherein an equalizing tank is communicated with a water inlet of a reaction tank through a water inlet pipe, the reactor comprises the reaction tank, a membrane disc aerator and a wastewater circulating mechanism, an overflow port, a water inlet and a circulating water inlet are sequentially arranged at the upper part of the reaction tank from top to bottom, a circulating water outlet and a sludge port are arranged at the lower part of the reaction tank, the membrane disc aerator at the bottom of the reaction tank is communicated with an aeration fan through an aeration pipe, and a flow regulating valve is arranged on the aeration pipe; the circulating pipeline is connected to the circulating water outlet and the circulating water inlet of the reaction tank, one ends of the heat exchange water inlet pipe and the heat exchange water outlet pipe are connected and communicated with the circulating pipeline, the other ends of the heat exchange water inlet pipe and the heat exchange water outlet pipe are connected and communicated with the heat exchanger, the overflow port is connected and communicated with the central cylinder of the sedimentation tank through the overflow pipe, and the sludge reflux port at the bottom of the sedimentation tank is connected and communicated with the sludge port of the reaction tank through the sludge reflux pipe. The utility model ensures that the nitrosation reaction is full and stable, can improve the reaction rate and has strong applicability.
Description
Technical Field
The utility model relates to a nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate, and belongs to the technical field of biological denitrification treatment of wastewater.
Background
Along with the high-speed development of economy, the production of garbage is gradually improved, the treatment pressure of leachate in garbage landfill is higher and higher, and ammonia nitrogen in the leachate is higher. If the high ammonia nitrogen wastewater is not treated in time, the high ammonia nitrogen wastewater is directly discharged into a water body or is flushed along with rainwater, so that eutrophication of the water body is caused, the water ecological environment is destroyed, and the health of people is seriously influenced after drinking the high ammonia nitrogen wastewater.
The traditional garbage leachate treatment process mainly comprises the treatment of a secondary nitrification and denitrification combined membrane, an organic carbon source is required to be added to supplement an electron donor, and meanwhile, the problem of high power consumption in the sludge nitrification reaction aeration process exists. The anaerobic ammonia oxidation is an energy-saving and efficient biological denitrification technology, can oxidize ammonia into nitrogen by taking nitrite as an electron acceptor under anaerobic conditions, and has great development potential. The anaerobic ammonia oxidation technology shows good application effect in the fields of high ammonia nitrogen wastewater such as sludge digestive juice, monosodium glutamate waste and pharmaceutical wastewater.
The anaerobic ammonia oxidation technology can realize the low energy consumption and high efficiency treatment of the high ammonia nitrogen wastewater. The simultaneous performance of the nitrosation reaction and the anaerobic ammoxidation reaction in the anaerobic ammoxidation reaction has certain debugging difficulties. Therefore, the separate nitrosation reaction tank and the anaerobic ammonia oxidation reaction tank are arranged, ammonia nitrogen in the landfill leachate is firstly converted into nitrite through nitrosation reaction, ammonia is oxidized into nitrogen through nitrite through anaerobic ammonia oxidation reaction, and two devices can be conveniently debugged on site so as to promote the engineering application of the anaerobic ammonia oxidation technology in the landfill leachate.
The existing nitrosation reactor is provided with a water inlet at the bottom and a water outlet at the upper part, the water inlet tank is added from the water inlet at the lower end of the nitrosation reactor through a water inlet pump, the water outlet of the nitrosation reactor is connected with the water inlet at the upper end of a sedimentation tank through a pipeline, the bottom of the sedimentation tank is communicated with the bottom of the nitrosation reactor through a sludge return pipeline, and an aeration device is arranged at the bottom of the nitrosation reactor to return sludge at the bottom of the sedimentation tank to the nitrosation reactor so as to maintain higher sludge concentration of the nitrosation reactor to prevent sludge loss and improve sludge activity. However, the nitrosation reactor realizes stable accumulation of nitrite nitrogen by controlling aeration quantity, but in practical application, the nitrosation reactor is affected by water quality difference of waste water and temperature difference of each region, so that nitrosation reaction is unstable, nitrite enrichment is not ideal, and subsequent landfill leachate anaerobic ammoxidation treatment is affected.
Disclosure of Invention
The utility model aims to provide a nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate, which can fully and stably perform nitrosation reaction, can improve the reaction rate and has strong applicability.
The technical scheme for achieving the purpose is as follows: a nitrosation reaction unit for landfill leachate anaerobic ammonia oxidation treatment, its characterized in that: comprises an equalizing tank, a reactor, a heat exchange mechanism and a sedimentation tank;
the equalizing tank is connected and communicated with a water inlet of the reaction tank through a water inlet pipe, and a water inlet pump is arranged on the water inlet pipe;
The reactor comprises a reaction tank, a membrane disc aerator and a wastewater circulating mechanism, wherein the upper part of the reaction tank is sequentially provided with an overflow port, a water inlet and a circulating water inlet from top to bottom, the lower part of the reaction tank is provided with a circulating water outlet and a sludge port positioned at the upper part of the circulating water outlet, a water inlet pipe in the reaction tank is communicated with the water inlet and the circulating water inlet, an outlet at the bottom of the water inlet pipe in the reaction tank is positioned at the middle lower part of the reaction tank, and a medicine adding port is also arranged on the reaction tank;
The membrane disc aerator at the bottom of the reaction tank is connected and communicated with the aeration fan through an aeration pipe, and a flow regulating valve is arranged on the aeration pipe;
The wastewater circulating mechanism comprises a circulating pipeline and a circulating pump arranged on the circulating pipeline, and the circulating pipeline is connected to a circulating water outlet and a circulating water inlet of the reaction tank;
The heat exchange mechanism is used for heating wastewater entering the circulation pipeline and comprises a heat exchanger, a heat exchange water inlet pipe and a heat exchange water outlet pipe, one end of the heat exchange water inlet pipe is communicated with the circulation pipeline, the other end of the heat exchange water inlet pipe is communicated with a cold end interface of the heat exchanger, one end of the heat exchange water outlet pipe positioned at the upper part of the heat exchange water inlet pipe is communicated with the circulation pipeline, the other end of the heat exchange water outlet pipe is communicated with a hot end interface of the heat exchanger, and a control valve is arranged on the circulation pipeline between the heat exchange water inlet pipe and the heat exchange water outlet pipe;
The overflow port on the reaction tank is communicated with the central cylinder of the sedimentation tank through an overflow pipe, a cylinder bottom plate is arranged at the bottom of the central cylinder, drain holes are uniformly distributed on the peripheral wall of the central cylinder, a sludge return port at the bottom of the sedimentation tank is communicated with the sludge port of the reaction tank through a sludge return pipe, a sludge return pump is arranged on the sludge return pipe, and a water outlet is arranged at the upper part of the sedimentation tank.
The reactor of the nitrosation reaction device adopts a reaction tank, a membrane disc aerator and a wastewater circulating mechanism, and the membrane disc aerator is used for maintaining basic upward aeration, so that dissolved oxygen is provided during nitrosation reaction, and simultaneously sludge is upwards flushed, especially the flow regulating valve is used for controlling the aeration rate of the membrane disc aerator, controlling the dissolved oxygen in the tank and the membrane disc aerator is uniformly aerated, so that internal circulating water flow cannot be formed in the reaction tank, and nitrosation reaction can be fully carried out with ammonia oxidizing bacteria in the reaction tank. The utility model adopts the wastewater circulating mechanism, can circulate the wastewater at the lower part of the reaction tank, accelerates the flow rate of the wastewater in the reaction tank, can avoid inhibiting the activity of ammonia oxidizing bacteria in the reaction tank under the action of gas impact, ensures that nitrosation reaction is sufficient and nitrite is formed, reduces the reaction residence time and improves the reaction rate. The utility model is also provided with the medicine adding port on the reaction tank, so that the water quality can be adjusted according to different water qualities, and the normal operation of nitrosation reaction is facilitated. The heating mechanism is arranged on the circulating pipeline, and the waste water in the circulating pipeline is heated through the heating mechanism, so that the reaction tank can meet the growth and enrichment of ammonia oxidizing bacteria, the reaction of ammonia oxidizing bacteria is maintained in a relatively stable and proper temperature condition, the technical problems of lower temperature in winter in the north and unstable nitrosation reaction can be solved, and the applicability is strong. The utility model can provide nitrite with proper growth proportion for anaerobic ammoxidation reaction by regulating and controlling the quality of the inlet water, dissolved oxygen and temperature.
Drawings
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate.
Wherein: 1-sedimentation tank, 1-central cylinder, 1-2-water outlet, 1-3-conical part, 1-4-sludge reflux inlet, 2-reflux control valve, 3-sludge reflux pump, 4-sludge reflux pipe, 5-equalizing tank, 6-water inlet pipe, 7-water inlet pump, 8-circulation pipeline, 9-membrane disc aerator, 10-reaction tank, 10-1-circulation water outlet, 10-2-sludge outlet, 10-3-circulation water inlet, 10-4-water inlet, 10-5-overflow port, 10-6-first water inlet pipe in tank, 10-7-second water inlet pipe in tank, 11-overflow pipe, 12-aeration pipe, 13-aeration fan, 14-heat exchanger, 15-heat exchange water inlet pipe, 16-heat exchange water outlet pipe, 17-filler support, 18-sheet package combined filler, 19-circulation pump, 20-detection branch pipe, 21-ph value on-line monitor, 22-dissolved oxygen on-line monitor, 23-control valve, 24-flow regulating valve.
Detailed Description
As shown in fig. 1, the nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate comprises an equalizing tank 5, a reactor, a heat exchange mechanism and a sedimentation tank 1.
As shown in figure 1, an equalizing tank 5 is connected and communicated with a water inlet 10-4 of a reaction tank 10 through a water inlet pipe 6, a water inlet pump 7 is arranged on the water inlet pipe 6, and waste water obtained by mixing landfill leachate containing high-concentration ammonia nitrogen and nitrite nitrogen with ultrafiltration effluent is added into the equalizing tank 5, and then is added into the reaction tank 10 through the water inlet pump 7 for nitrosation reaction.
As shown in fig. 1, the reactor of the utility model comprises a reaction tank 10, a membrane disc aerator 9 and a wastewater circulating mechanism, wherein an overflow port 10-5, a water inlet 10-4 and a circulating water inlet 10-3 are sequentially arranged at the upper part of the reaction tank 10 from top to bottom, a circulating water outlet 10-1 and a sludge port 10-2 positioned at the upper part of the circulating water outlet 10-1 are arranged at the lower part of the reaction tank 10, a water inlet pipe in the tank is connected and communicated with the water inlet 10-4 and the circulating water inlet 10-3, an outlet at the bottom of the water inlet pipe in the tank is positioned at the middle lower part of the reaction tank 10, wastewater in the reaction tank 10 can be stirred by the water inlet pipe in the tank in the reaction tank 10, and the wastewater can be fully contacted and reacted with ammonia oxidizing bacteria under the action of airflow, active sludge in the reaction rises to the overflow port 10-5 along with the water flow, and the gas contained in the sludge with larger grain size is flushed out along with the impact of the water flow at the lower part, the buoyancy is lowered, and is settled back to the middle part of the reactor, so that the sludge is suspended from the position where gravity and the impact force of the water flow below offset force of the water flow force; the sludge particles with smaller particle size can continuously rise along with the water flow to the overflow port 10-5 to flow out.
The reaction tank 10 is also provided with a dosing port which is connected with a dosing pump, and a required medicament is added through the dosing port, so that the PH value of the wastewater can be adjusted, the influence on ammonia oxidizing bacteria is reduced, the wastewater can be subjected to nitrosation reaction, and ammonia nitrogen in landfill leachate is stably converted into nitrite. As shown in FIG. 1, the water inlet pipe in the tank of the utility model comprises a first water inlet pipe 10-6 in the tank and a second water inlet pipe 10-7 in the tank, wherein the first water inlet pipe 10-6 in the tank is communicated with a water inlet 10-4 of the reaction tank 10, and the second water inlet pipe 10-7 in the tank is communicated with a circulating water inlet 10-3.
As shown in FIG. 1, the upper part of the reaction tank 10 positioned at the overflow port 10-5 is also provided with a filler bracket 17 and can be disassembled, a combined sheet filler 18 is arranged on the filler bracket 17, the lower part of the combined sheet filler 18 is positioned at the lower part of the circulating water inlet 10-3, the combined sheet filler 18 is the existing multi-wool combined sheet filler, and sludge interception is facilitated through the combined sheet filler 18, so that nitrosation is started rapidly.
As shown in figure 1, a membrane disc aerator 9 at the bottom of a reaction tank 10 is connected and communicated with an aeration fan 13 through an aeration pipe 12, a flow regulating valve 24 is arranged on the aeration pipe 12, the membrane disc aerator 9 keeps basic upward aeration, sludge is upwards flushed when dissolved oxygen is provided for nitrosation reaction, particularly the membrane disc aerator 9 is uniformly aerated and can fully react with ammonia oxidizing bacteria at the lower part of the tank, the opening degree of the flow regulating valve 24 is controlled to provide the required aeration quantity, the dissolved oxygen during the reaction is controlled, the problem that ammonia nitrogen cannot be converted into nitrite due to insufficient supply of the dissolved oxygen and the problem that the nitrification reaction is accelerated due to overhigh dissolved oxygen is solved, the aeration fan 13 can adopt a fan with variable frequency regulation and control, and the aeration pipe 12 extends into the reaction tank 10 from the top of the reaction tank 10 and is connected and communicated with the membrane disc aerator 9.
As shown in fig. 1, the wastewater circulating mechanism comprises a circulating pipeline 8 and a circulating pump 19 arranged on the circulating pipeline 8, wherein the circulating pipeline 8 is connected to a circulating water outlet 10-1 and a circulating water inlet 10-3 of the reactor, and part of wastewater at the lower part and ammonia oxidizing bacteria are refluxed through the circulating pipeline 8, so that the flow of wastewater in a reaction tank 10 is accelerated, the ammonia oxidizing bacteria are distributed again, and ammonia nitrogen in the wastewater is converted into nitrite under the action of dissolved oxygen.
As shown in fig. 1, a detecting branch pipe 20 is connected in parallel on a circulating pipeline 8, the detecting branch pipe 20 is connected with a ph value on-line monitor 21 and a dissolved oxygen on-line monitor 22, and the ph value of wastewater is detected by the ph value on-line monitor 21 during reaction, and chemical dosing adjustment is controlled, so that the ph value of the wastewater in nitrosation reaction is accurately adjusted, and the dissolved oxygen in the wastewater is detected by the dissolved oxygen on-line monitor 22, so that the aeration quantity of a membrane disc aerator 9 can be accurately controlled. The utility model discloses a to intaking quality of water, dissolved oxygen and reaction temperature and regulate and control, can be 1 with the proportion adjustment of ammonia nitrogen and nitrite concentration: 1mg/L, and nitrite with proper growth proportion is provided for anaerobic ammoxidation reaction.
As shown in fig. 1, the heat exchange mechanism is used for heating wastewater entering the circulation pipeline 8, and comprises a heat exchanger 14, a heat exchange water inlet pipe 15 and a heat exchange water outlet pipe 16, wherein the heat exchanger 14 can be a plate type heat exchanger, one end of the heat exchange water inlet pipe 15 is communicated with the circulation pipeline 8, the other end of the heat exchange water outlet pipe 16 positioned at the upper part of the heat exchange water inlet pipe 15 is communicated with the circulation pipeline 8, the other end of the heat exchange water outlet pipe 16 is communicated with the hot end interface of the heat exchanger 14, a control valve 23 is arranged on the circulation pipeline 8 between the heat exchange water inlet pipe 15 and the heat exchange water outlet pipe 16 and is used for heating the wastewater in the reaction tank 10 so as to maintain the optimal nitrosation reaction temperature, and a rock wool tank body heat preservation layer is arranged outside the reaction tank 10 so as to maintain the operation temperature of the system at about 30 ℃. The heat exchange water inlet pipe 15 and the heat exchange water outlet pipe 16 are also provided with normally open stop valves, so that the heat exchanger 14 is convenient to maintain.
As shown in fig. 1, an overflow port 10-5 on a reaction tank 10 is connected and communicated with a central cylinder 1-1 of a sedimentation tank 1 through an overflow pipe 11, a cylinder bottom plate is arranged at the bottom of the central cylinder 1-1, drain holes are uniformly distributed on the peripheral wall of the central cylinder 1-1, flushing water is more uniform through the central cylinder 1-1, and the sludge at the bottom of the sedimentation tank 1 is prevented from being flushed, a sludge return port 1-4 at the bottom of the sedimentation tank 1 is connected and communicated with a sludge port 10-2 of the reaction tank 10 through a sludge return pipe 4, a sludge return pump 3 is arranged on the sludge return pipe 4, the sludge is returned into the reaction tank 10 to keep higher sludge concentration, the loss of ammoxidation bacteria is avoided, a drain port 1-2 is arranged at the upper part of the sedimentation tank 1, and waste water rich in nitrite is subjected to subsequent anaerobic ammoxidation reaction through the drain port 1-2. The lower part of the sedimentation tank 1 is provided with a conical part 1-3, a reflux control valve 2 is also arranged at the sludge reflux port 1-4, and a cleaning valve is arranged at the bottom of the conical part 1-3, so that the sedimentation tank 1 is conveniently cleaned regularly.
Claims (7)
1. A nitrosation reaction unit for landfill leachate anaerobic ammonia oxidation treatment, its characterized in that: comprises an equalizing tank (5), a reactor, a heat exchange mechanism and a sedimentation tank (1);
The equalizing tank (5) is connected and communicated with a water inlet (10-4) of the reaction tank (10) through a water inlet pipe (6), and a water inlet pump (7) is arranged on the water inlet pipe (6);
The reactor comprises a reaction tank (10), a membrane disc aerator (9) and a wastewater circulating mechanism, wherein an overflow port (10-5), a water inlet (10-4) and a circulating water inlet (10-3) are sequentially formed in the upper part of the reaction tank (10) from top to bottom, a circulating water outlet (10-1) and a sludge port (10-2) positioned at the upper part of the circulating water outlet (10-1) are formed in the lower part of the reaction tank (10), an in-tank water inlet pipe arranged in the reaction tank (10) is connected and communicated with the water inlet (10-4) and the circulating water inlet (10-3), an outlet at the bottom of the in-tank water inlet pipe is positioned at the middle lower part of the reaction tank (10), and a dosing port is further formed in the reaction tank (10);
The membrane disc aerator (9) at the bottom of the reaction tank (10) is connected and communicated with the aeration fan (13) through an aeration pipe (12), and a flow regulating valve (24) is arranged on the aeration pipe (12);
The wastewater circulation mechanism comprises a circulation pipeline (8) and a circulation pump (19) arranged on the circulation pipeline (8), and the circulation pipeline (8) is connected to a circulation water outlet (10-1) and a circulation water inlet (10-3) of the reaction tank (10);
The heat exchange mechanism is used for heating wastewater entering the circulation pipeline (8) and comprises a heat exchanger (14), a heat exchange water inlet pipe (15) and a heat exchange water outlet pipe (16), one end of the heat exchange water inlet pipe (15) is connected and communicated with the circulation pipeline (8), the other end of the heat exchange water inlet pipe is connected and communicated with a cold end interface of the heat exchanger (14), one end of the heat exchange water outlet pipe (16) at the upper part of the heat exchange water inlet pipe (15) is connected and communicated with the circulation pipeline (8), the other end of the heat exchange water outlet pipe is connected and communicated with a hot end interface of the heat exchanger (14), and a control valve (23) is arranged on the circulation pipeline (8) between the heat exchange water inlet pipe (15) and the heat exchange water outlet pipe (16);
The overflow port (10-5) on the reaction tank (10) is connected and communicated with the central cylinder (1-1) of the sedimentation tank (1) through an overflow pipe (11), a cylinder bottom plate is arranged at the bottom of the central cylinder (1-1), drain holes are uniformly distributed in the peripheral wall, a sludge reflux port (1-4) at the bottom of the sedimentation tank (1) is connected and communicated with a sludge port (10-2) of the reaction tank (10) through a sludge reflux pipe (4), a sludge reflux pump (3) is arranged on the sludge reflux pipe (4), and a water outlet (1-2) is arranged at the upper part of the sedimentation tank (1).
2. A nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate according to claim 1, wherein: the upper part of the reaction tank (10) positioned at the overflow port (10-5) is also provided with a filler bracket (17) and can be disassembled, the sheet-mounted combined filler (18) is arranged on the filler bracket (17), and the bottom of the sheet-mounted combined filler (18) is positioned at the lower part of the circulating water inlet (10-3).
3. A nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate according to claim 1, wherein: the circulating pipeline (8) is connected with a detection branch pipe (20) in parallel, and the detection branch pipe (20) is connected with a ph value on-line monitor (21) and a dissolved oxygen on-line monitor (22).
4. A nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate according to claim 1, wherein: the aeration pipe (12) extends into the reaction tank (10) from the top of the reaction tank (10) and is communicated with the membrane disc aerator (9).
5. A nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate according to claim 1, wherein: the in-tank water inlet pipe comprises an in-tank first water inlet pipe (10-6) and an in-tank second water inlet pipe (10-7), wherein the in-tank first water inlet pipe (10-6) is connected and communicated with a water inlet (10-4) of the reaction tank (10), and the in-tank second water inlet pipe (10-7) is connected and communicated with a circulating water inlet (10-3).
6. A nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate according to claim 1, wherein: the lower part of the sedimentation tank (1) is provided with a conical part (1-3), a reflux control valve (2) is also arranged at the sludge reflux port (1-4), and a cleaning valve is arranged at the bottom of the conical part (1-3).
7. A nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate according to claim 1, wherein: and a rock wool tank body heat preservation layer is arranged outside the reaction tank (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322546289.4U CN220845728U (en) | 2023-09-19 | 2023-09-19 | Nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322546289.4U CN220845728U (en) | 2023-09-19 | 2023-09-19 | Nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate |
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| CN220845728U true CN220845728U (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322546289.4U Active CN220845728U (en) | 2023-09-19 | 2023-09-19 | Nitrosation reaction device for anaerobic ammoxidation treatment of landfill leachate |
Country Status (1)
| Country | Link |
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| CN (1) | CN220845728U (en) |
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2023
- 2023-09-19 CN CN202322546289.4U patent/CN220845728U/en active Active
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