CN115475425B - Ammonia nitrogen wastewater treatment system and ammonia nitrogen wastewater treatment method - Google Patents
Ammonia nitrogen wastewater treatment system and ammonia nitrogen wastewater treatment method Download PDFInfo
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- CN115475425B CN115475425B CN202211112663.3A CN202211112663A CN115475425B CN 115475425 B CN115475425 B CN 115475425B CN 202211112663 A CN202211112663 A CN 202211112663A CN 115475425 B CN115475425 B CN 115475425B
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 79
- 230000006835 compression Effects 0.000 claims abstract description 67
- 238000007906 compression Methods 0.000 claims abstract description 67
- 238000005406 washing Methods 0.000 claims abstract description 57
- 230000005540 biological transmission Effects 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 238000000197 pyrolysis Methods 0.000 claims abstract description 18
- 238000011010 flushing procedure Methods 0.000 claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 10
- 230000003647 oxidation Effects 0.000 claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 238000004062 sedimentation Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000000047 product Substances 0.000 claims description 68
- 239000013049 sediment Substances 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 15
- 239000002351 wastewater Substances 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 13
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- 229910019142 PO4 Inorganic materials 0.000 claims description 8
- 229960002261 magnesium phosphate Drugs 0.000 claims description 8
- 159000000003 magnesium salts Chemical class 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 8
- 239000010452 phosphate Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 239000011574 phosphorus Substances 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 238000001556 precipitation Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 240000005002 Erythronium dens canis Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5254—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using magnesium compounds and phosphoric acid for removing ammonia
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses an ammonia nitrogen wastewater treatment system and an ammonia nitrogen wastewater treatment method, which relate to the technical field of wastewater treatment and comprise a mixed reaction tank, a sedimentation tank, an aerobic contact oxidation tank, a drying pyrolyzer, an acidolysis tank and an acid liquor absorption tank, wherein the ammonia nitrogen wastewater treatment system further comprises a sedimentation product filtering and flushing mechanism; the device comprises a precipitation product washing cylinder, a precipitation product filtering and flushing mechanism, a precipitation product washing cylinder, a driving mechanism and a filter plate, wherein the driving mechanism is arranged in the precipitation product washing cylinder, the middle part of the inner cavity of the precipitation product washing cylinder is provided with the filter plate, the filter plate is sleeved on the outer side of the driving mechanism, and the top of the outer side of the driving mechanism is provided with a compression water removing mechanism in a transmission manner. The invention can effectively reduce the liquid residue in the precipitated product, further make the precipitated product more convenient in the subsequent transfer, avoid the condition of dripping, reduce the time required in the subsequent drying and pyrolysis, and improve the pyrolysis treatment efficiency of the precipitated product.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to an ammonia nitrogen wastewater treatment system and an ammonia nitrogen wastewater treatment method.
Background
The ammonia nitrogen wastewater refers to that the ammonia nitrogen content in wastewater water exceeds the standard, the ecological environment of the external water body is deteriorated after the wastewater is directly discharged, the living and human health of aquatic organisms such as fish and the like are endangered, the water body is eutrophicated, the ornamental value of the water body is reduced, and the water treatment cost is increased.
The invention patent of patent application publication No. CN 103466829A discloses a high-concentration ammonia nitrogen wastewater treatment method, which comprises the steps of adding alkali liquor into wastewater to be uniformly mixed, adding fresh magnesium salt and phosphate liquor, precipitating, filtering, washing and filtering the precipitated product, drying and pyrolyzing the precipitated product, recycling half of the product obtained by pyrolysis to a mixed reaction tank, carrying out acidolysis on the other half of the product, recycling the solution subjected to acidolysis to the mixed reaction tank, metering in the reaction tank after circulation for a plurality of times, adding a proper amount of magnesium salt and phosphate liquor, and reacting ammonia gas generated in the treatment process with an acid solution to obtain ammonia salt. The treatment system for treating the wastewater by using the method comprises a mixed reaction tank, a sedimentation tank, an aerobic contact oxidation tank, a filtering and flushing tank, a drying pyrolyzer, an acidolysis tank and an acid liquor absorption tank.
When the treatment method is used for recovering the residual medicament components in the precipitated product, the precipitated product is required to be conveyed into a filtering and flushing tank, the precipitated product is filtered through filter cloth and then is flushed through tap water or purified water, then the precipitated product is filtered, the filtered flushing fluid flows back to a mixing reaction tank through a pipeline, and the precipitated product is required to be manually conveyed into a drying pyrolyzer for pyrolysis.
Above-mentioned in-process, when collecting the filtration flushing liquor through filter cloth filterable mode, because filter cloth self restriction, deposit the product and after collecting the process, its inside still can contain a small amount of filtration flushing liquor, and the existence of this part residual filtration flushing liquor can not only increase the transfer degree of difficulty of deposit the product, and the transfer in-process easily leads to operational environment moist, also can prolong the required time when follow-up deposit product carries out stoving pyrolysis, and then reduces the pyrolysis treatment efficiency of deposit product.
Therefore, it is necessary to solve the above problems by inventing an ammonia nitrogen wastewater treatment system and an ammonia nitrogen wastewater treatment method.
Disclosure of Invention
The invention aims to provide an ammonia nitrogen wastewater treatment system and an ammonia nitrogen wastewater treatment method, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: an ammonia nitrogen wastewater treatment system comprises a mixing reaction tank, a sedimentation tank, an aerobic contact oxidation tank, a drying pyrolyzer, an acidolysis tank and an acid liquor absorption tank, and further comprises a sediment filtering and flushing mechanism;
the sediment filtering and flushing mechanism comprises a sediment washing cylinder, an active driving mechanism is arranged in the sediment washing cylinder, a filter plate is arranged in the middle of the inner cavity of the sediment washing cylinder, the filter plate is sleeved on the outer side of the active driving mechanism, a compression dewatering mechanism is arranged at the top of the outer side of the active driving mechanism in a transmission manner, a trigger type driving mechanism is arranged at the bottom of the outer side of the active driving mechanism, and a plurality of groups of bidirectional disturbance mechanisms are arranged between the filter plate and the compression dewatering mechanism;
the active driving mechanism comprises a driving motor, a driving shaft and driving convex teeth;
the driving motor is fixedly arranged at the bottom of the sediment washing barrel, threads are arranged on the outer side of the driving shaft, the driving shaft is positioned in the sediment washing barrel and is in transmission connection with the driving motor, and the driving convex teeth are fixedly arranged at the bottom of the outer side of the driving shaft;
the compression dewatering mechanism comprises a compression plate and a plurality of groups of guide assemblies, wherein the guide assemblies comprise guide sleeves, annular sleeve plates and first springs;
the compression plate is sleeved on the outer side of the driving shaft and is in threaded connection with the driving shaft, the guide sleeve is arranged on the compression plate in a sliding penetrating mode, the annular sleeve plate is fixedly sleeved on the top of the outer side of the guide sleeve, the first spring is sleeved on the top of the outer side of the guide sleeve, one end of the first spring is fixedly connected with the compression plate, and the other end of the first spring is fixedly connected with the annular sleeve plate;
the trigger type driving mechanism comprises a transmission sleeve, a driving gear, a positioning sleeve, a trigger rod and a second spring;
the transmission sleeve is arranged on the outer side of the driving shaft in a sliding sleeve manner, a plurality of transmission grooves are formed in the inner side of the transmission sleeve and are matched with the driving convex teeth, the driving gear is fixedly sleeved on the outer side of the transmission sleeve, the positioning sleeve is rotationally sleeved on the outer side of the transmission sleeve through a bearing, a plurality of trigger rods are arranged on the outer side of the positioning sleeve in a sliding sleeve manner, a plurality of trigger rods are uniformly and fixedly arranged on the outer side of the positioning sleeve, a second spring is sleeved on the outer side of the driving shaft in a sleeve manner, one end of the second spring is fixedly connected with the inner wall of the precipitation product washing cylinder, and the other end of the second spring is fixedly connected with the bottom of the positioning sleeve;
the bidirectional disturbance mechanism comprises a threaded sleeve, an upper disturbance plate, an avoidance groove, a driven gear, a transmission shaft and a lower disturbance plate;
the thread sleeve is arranged on the filter plate in a sliding penetrating way, the bottom end of the thread sleeve is fixedly connected with the adjacent trigger rod, the top outside the thread sleeve is fixedly sleeved with an annular protruding part, the thread sleeve is arranged on the top of the filter plate in a rotating and nesting way through a bearing, the thread sleeve is sleeved on the outer side of the thread sleeve and is in threaded connection with the thread sleeve, the upper disturbance plate is provided with a plurality of thread grooves, the device comprises a plurality of upper disturbance plates, a driven gear, a plurality of lower disturbance plates, a plurality of guide sleeves and a plurality of guide gears, wherein the upper disturbance plates are uniformly and fixedly arranged on the outer side of the threaded sleeve, the avoidance grooves are formed in the bottoms of the side surfaces of the threaded sleeve, the driven gear is located on the inner side of the avoidance grooves, the transmission shaft is rotatably arranged on the inner side of the threaded sleeve and the guide sleeve through a bearing, the driven gear is fixedly arranged at the bottom end of the transmission shaft, and the lower disturbance plates are uniformly and fixedly arranged on the outer side of the threaded sleeve.
The invention also provides an ammonia nitrogen wastewater treatment method of the ammonia nitrogen wastewater treatment system, which is characterized by comprising the following steps:
s1, adding wastewater and alkali liquor into a mixed reaction tank, adding magnesium salt and phosphate solution into the wastewater, stirring and mixing, separating and precipitating, inputting a precipitated product into a precipitated product washing cylinder through a pipeline, conveying a water body into an aerobic contact oxidation tank for treatment, and inputting ammonia gas into an acid liquor absorption tank for recovery;
s2, after entering the interior of the sediment washing cylinder, sediment is blocked by the filter plate and then stays at the top of the filter plate, at the moment, the driving motor drives the driving shaft to rotate clockwise, the driving shaft drives the compression plate to descend when rotating, the compression plate is compacted on the sediment at the top of the filter plate after descending, and then the wastewater reserved in the sediment passes through the filter plate and flows to the bottom of the inner cavity of the sediment washing cylinder and then flows back to the mixing reaction tank through a pipeline;
s3, after the first filtering is finished, the driving motor drives the driving shaft to rotate anticlockwise, so that the compression plate ascends and resets, clear water is injected into the sediment washing cylinder through the pipeline at the moment, the sediment is washed after the clear water is injected, and after the water injection is finished, the driving motor drives the driving shaft to rotate clockwise again, so that the compression plate descends again;
s4, in the descending process of the compression plate, the guide sleeve and the threaded sleeve are driven to synchronously descend, the threaded sleeve is driven to rotate clockwise at the top of the filter plate when the threaded sleeve descends, and then the plurality of lower disturbance plates are driven to synchronously rotate clockwise, so that precipitated products and washing water are disturbed, and the washing efficiency is accelerated;
s5, the threaded sleeve descends to drive the trigger rod to synchronously descend, the trigger rod descends to drive the transmission sleeve to descend through the positioning sleeve, the transmission sleeve slides to the outer side of the driving convex teeth after descending, at the moment, the driving shaft drives the transmission sleeve to synchronously rotate through the driving convex teeth in the rotating process, the transmission sleeve drives the driving gear to synchronously rotate clockwise, then the driving gear drives the driven gear to anticlockwise rotate, the driven gear drives the plurality of lower disturbance plates to anticlockwise rotate through the transmission shaft, and then the upper disturbance plates are matched to disturbance precipitated products and washing water in different directions;
s6, along with the continuous descending of the guide sleeve and the threaded sleeve, the annular protruding part at the top of the outer side of the threaded sleeve is tightly pressed at the top of the threaded sleeve, the threaded sleeve is not rotated any more, the compression plate and the threaded sleeve cannot continuously descend, at the moment, along with the continuous descending of the compression plate, the compression plate stretches the first spring, when the descending distance of the compression plate reaches a threshold value, extrusion of a precipitated product is completed, washing water flows to the bottom of an inner cavity of the precipitated product washing cylinder through the filter plate, and then flows back to the mixing reaction tank through a pipeline;
s7, enabling the driving motor to drive the driving shaft to rotate anticlockwise, resetting the compression plate again, opening a valve on a sediment output pipe on the right side of the sediment washing cylinder in the resetting process of the compression plate, and enabling the extruded sediment to be continuously pushed to the inlet of the sediment output pipe and then discharged along with the continuous rotation of the plurality of upper disturbance plates;
s8, the discharged precipitate product enters a drying pyrolyzer for pyrolysis treatment, half of the pyrolysis product is recycled as liquid medicine into a mixing reaction tank, the other half of the pyrolysis product is added into an acidolysis tank for acidolysis, the acidolysis product is recycled into the mixing reaction tank, and ammonia gas generated in the pyrolysis process is also input into an acid liquor absorption tank for recycling;
s9, repeating the steps S1-S8, and adding magnesium salt and phosphate solution for continuous treatment when the solution in the mixed reaction tank does not meet the mole ratio of nitrogen to phosphorus of 1.0-1.4 and the mole ratio of magnesium to phosphorus of 0.8-1.2.
The invention has the technical effects and advantages that:
according to the invention, the active driving mechanism, the filter plate, the compression dewatering mechanism, the trigger type driving mechanism and the bidirectional disturbance mechanism are arranged, so that the compression dewatering mechanism is conveniently driven by the active driving mechanism, the compression dewatering mechanism is used for extruding a sediment product at the top of the filter plate, and then residual solution in the sediment product is rapidly discharged, the active driving mechanism is used for driving the compression dewatering mechanism again in the subsequent washing process, meanwhile, the compression dewatering mechanism can trigger the bidirectional disturbance mechanism in the descending process, and then the trigger type driving mechanism is used for pushing the trigger type driving mechanism, then the active driving mechanism drives the bidirectional disturbance mechanism through the trigger type driving mechanism, and then the bidirectional disturbance mechanism is used for bi-directionally disturbing the sediment product and the washing water, so that the washing effect is effectively improved, and finally, the compression dewatering mechanism is used for extruding the washed sediment product, and then the washing water is discharged.
Drawings
Fig. 1 is a schematic view of the overall front cross-sectional structure of the present invention.
Fig. 2 is a schematic diagram of the front view of the active driving mechanism, the compression dewatering mechanism, the trigger driving mechanism and the bidirectional disturbance mechanism of the present invention.
Fig. 3 is a schematic diagram of a front cross-sectional structure of an active driving mechanism and a trigger driving mechanism according to the present invention.
FIG. 4 is a schematic diagram of a front cross-sectional structure of a compression dewatering mechanism and a bi-directional perturbation mechanism of the present invention.
In the figure: 1. a precipitated product wash drum; 2. an active drive mechanism; 21. a driving motor; 22. a drive shaft; 23. driving the convex teeth; 3. a filter plate; 4. compressing and dewatering mechanism; 41. a compression plate; 42. a guide sleeve; 43. an annular sleeve plate; 44. a first spring; 5. a trigger-type driving mechanism; 51. a transmission sleeve; 52. a drive gear; 53. positioning a sleeve; 54. a trigger lever; 55. a second spring; 6. a bidirectional disturbance mechanism; 61. a threaded sleeve; 62. a threaded sleeve; 63. an upper disturbance plate; 64. an avoidance groove; 65. a driven gear; 66. a transmission shaft; 67. and a lower perturbation plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The invention provides an ammonia nitrogen wastewater treatment system shown in figures 1-4, which comprises a mixing reaction tank, a sedimentation tank, an aerobic contact oxidation tank, a drying pyrolyzer, an acidolysis tank and an acid liquor absorption tank, and also comprises a sediment filtering and flushing mechanism;
the sediment product filtering and flushing mechanism comprises a sediment product washing cylinder 1, an active driving mechanism 2 is arranged inside the sediment product washing cylinder 1, a filter plate 3 is arranged in the middle of an inner cavity of the sediment product washing cylinder 1, the filter plate 3 is sleeved on the outer side of the active driving mechanism 2, a compression dewatering mechanism 4 is arranged on the top of the outer side of the active driving mechanism 2 in a transmission manner, a trigger type driving mechanism 5 is arranged at the bottom of the outer side of the active driving mechanism 2, and a plurality of groups of bidirectional disturbance mechanisms 6 are arranged between the filter plate 3 and the compression dewatering mechanism 4.
As shown in fig. 3, the active driving mechanism 2 includes a driving motor 21, a driving shaft 22 and driving teeth 23, wherein the driving motor 21 is fixedly disposed at the bottom of the precipitation product washing drum 1, threads are disposed at the outer side of the driving shaft 22, the driving shaft 22 is located inside the precipitation product washing drum 1 and is in transmission connection with the driving motor 21, and the driving teeth 23 are fixedly disposed at the bottom of the outer side of the driving shaft 22.
As shown in fig. 4, the compression dewatering mechanism 4 includes a compression plate 41 and a plurality of groups of guide assemblies, the guide assemblies include a guide sleeve 42, an annular sleeve plate 43 and a first spring 44, wherein the compression plate 41 is sleeved on the outer side of the driving shaft 22 and is in threaded connection with the driving shaft 22, the guide sleeve 42 is slidably and penetratingly arranged on the compression plate 41, the annular sleeve plate 43 is fixedly sleeved on the outer top of the guide sleeve 42, the first spring 44 is sleeved on the outer top of the guide sleeve 42, one end of the first spring 44 is fixedly connected with the compression plate 41, and the other end of the first spring 44 is fixedly connected with the annular sleeve plate 43.
Through setting up above-mentioned structure to compress deposit product when compression board 41 descends, drive guide sleeve 42 and descend simultaneously when compression board 41 descends, when guide sleeve 42 can't continue to descend, compression board 41 then stretches first spring 44 in the in-process of descending.
As shown in fig. 3, the trigger driving mechanism 5 includes a transmission sleeve 51, a driving gear 52, a positioning sleeve 53, a trigger rod 54 and a second spring 55, where the transmission sleeve 51 is slidably sleeved on the outside of the driving shaft 22, a plurality of transmission grooves are disposed on the inside of the transmission sleeve 51, the transmission grooves are adapted to the driving teeth 23, the driving gear 52 is fixedly sleeved on the outside of the transmission sleeve 51, the positioning sleeve 53 is rotatably sleeved on the outside of the transmission sleeve 51 through a bearing, the trigger rod 54 is provided with a plurality of trigger rods 54, the trigger rods 54 are uniformly and fixedly disposed on the outside of the positioning sleeve 53, the second spring 55 is sleeved on the outside of the driving shaft 22, one end of the second spring 55 is fixedly connected with the inner wall of the precipitate washing drum 1, and the other end of the second spring 55 is fixedly connected with the bottom of the positioning sleeve 53.
Through setting up above-mentioned structure to drive transmission sleeve 51 synchronous decline through positioning sleeve 53 when trigger lever 54 descends, cup joint in the drive dogtooth 23 outside after transmission sleeve 51 descends, drive shaft 22 drives transmission sleeve 51 synchronous revolution through drive dogtooth 23 this moment, and transmission sleeve 51 then drives driving gear 52 synchronous revolution.
As shown in fig. 4, the bidirectional perturbation mechanism 6 includes a threaded sleeve 61, a threaded sleeve 62, an upper perturbation plate 63, an avoidance groove 64, a driven gear 65, a transmission shaft 66 and a lower perturbation plate 67, wherein the threaded sleeve 61 is slidably penetrated and arranged on the filter plate 3, the bottom end of the threaded sleeve 61 is fixedly connected with the adjacent trigger rod 54, an annular protrusion is fixedly sleeved at the top of the outer side of the threaded sleeve 61, the threaded sleeve 62 is rotatably sleeved at the top of the filter plate 3 through a bearing, the threaded sleeve 62 is sleeved at the outer side of the threaded sleeve 61 and is in threaded connection with the threaded sleeve 61, the upper perturbation plate 63 is provided with a plurality of upper perturbation plates 63, the avoidance groove 64 is arranged at the bottom of the side surface of the threaded sleeve 61, the driven gear 65 is positioned at the inner side of the avoidance groove 64, the transmission shaft 66 is rotatably arranged at the inner side of the threaded sleeve 61 and the guide sleeve 42 through a bearing, the driven gear 65 is fixedly arranged at the bottom end of the transmission shaft 66, and the lower perturbation plate 67 is provided with a plurality of lower perturbation plates 67 which are uniformly and fixedly arranged at the outer side of the threaded sleeve 61.
Through setting up above-mentioned structure to when screw sleeve 61 pressurized descends, drive a plurality of upper perturbation boards 63 through screw sleeve 62 and rotate, screw sleeve 61 descends in-process in addition and drives the trigger lever 54 and descend in step, driven gear 65 then drives a plurality of lower perturbation boards 67 through transmission shaft 66 and rotate in step when rotatory, and then cooperates upper perturbation board 63 to be disturbed precipitation product and wash water by different directions.
Example 2
The invention also provides an ammonia nitrogen wastewater treatment method of the ammonia nitrogen wastewater treatment system, which is characterized by comprising the following steps:
s1, adding wastewater and alkali liquor into a mixed reaction tank, adding magnesium salt and phosphate solution into the wastewater, stirring and mixing, separating and precipitating, inputting a precipitated product into a precipitated product washing cylinder 1 through a pipeline, conveying a water body into an aerobic contact oxidation tank for treatment, and inputting ammonia gas into an acid liquor absorption tank for recovery;
s2, after entering the interior of the sediment washing cylinder 1, sediment is blocked by the filter plate 3 and then stays at the top of the filter plate 3, at the moment, the driving motor 21 drives the driving shaft 22 to rotate clockwise, the driving shaft 22 drives the compression plate 41 to descend, the compression plate 41 descends and then compacts the sediment at the top of the filter plate 3, and then the wastewater remained in the sediment passes through the filter plate 3 and flows to the bottom of the inner cavity of the sediment washing cylinder 1 and then flows back to the mixing reaction tank through a pipeline;
s3, after the first filtering is finished, the driving motor 21 drives the driving shaft 22 to rotate anticlockwise, so that the compression plate 41 ascends and resets, at the moment, clear water is injected into the sediment washing cylinder 1 through a pipeline, sediment is washed after the clear water is injected, after the water injection is finished, the driving motor 21 drives the driving shaft 22 to rotate clockwise again, and then the compression plate 41 descends again;
s4, in the descending process of the compression plate 41, the guide sleeve 42 and the threaded sleeve 61 are driven to synchronously descend, the threaded sleeve 61 drives the threaded sleeve 62 to rotate clockwise at the top of the filter plate 3 when descending, and then the plurality of lower disturbance plates 67 are driven to synchronously rotate clockwise to disturb precipitated products and washing water, so that the washing efficiency is accelerated;
s5, the threaded sleeve 61 descends to drive the trigger rod 54 to synchronously descend, when the trigger rod 54 descends, the positioning sleeve 53 drives the transmission sleeve 51 to descend, the transmission sleeve 51 slides to the outer side of the driving convex teeth 23 after descending, at the moment, the driving shaft 22 drives the transmission sleeve 51 to synchronously rotate through the driving convex teeth 23 in the rotating process, the transmission sleeve 51 drives the driving gear 52 to synchronously rotate clockwise, then the driving gear 52 drives the driven gear 65 to anticlockwise rotate, the driven gear 65 drives the plurality of lower disturbance plates 67 to anticlockwise rotate through the transmission shaft 66, and then the upper disturbance plates 63 are matched to disturbance precipitated products and washing water in different directions;
s6, along with the continuous descending of the guide sleeve 42 and the threaded sleeve 61, the annular protruding part at the top of the outer side of the threaded sleeve 61 is pressed on the top of the threaded sleeve 62, at the moment, the threaded sleeve 62 is not rotated any more, the compression plate 41 and the threaded sleeve 61 cannot continuously descend, at the moment, along with the continuous descending of the compression plate 41, the compression plate 41 stretches the first spring 44, when the descending distance of the compression plate 41 reaches a threshold value, the extrusion of a precipitated product is completed, washing water flows to the bottom of the inner cavity of the precipitated product washing cylinder 1 through the filter plate 3, and then flows back to the mixing reaction tank through a pipeline;
s7, enabling the driving motor 21 to drive the driving shaft 22 to rotate anticlockwise, resetting the compression plate 41 again, opening a valve on a precipitated product output pipe on the right side of the precipitated product washing barrel 1 in the resetting process of the compression plate 41, and continuously pushing the inlet of the precipitated product output pipe to be discharged along with the continuous rotation of the plurality of upper disturbance plates 63;
s8, the discharged precipitate product enters a drying pyrolyzer for pyrolysis treatment, half of the pyrolysis product is recycled as liquid medicine into a mixing reaction tank, the other half of the pyrolysis product is added into an acidolysis tank for acidolysis, the acidolysis product is recycled into the mixing reaction tank, and ammonia gas generated in the pyrolysis process is also input into an acid liquor absorption tank for recycling;
s9, repeating the steps S1-S8, and adding magnesium salt and phosphate solution for continuous treatment when the solution in the mixed reaction tank does not meet the mole ratio of nitrogen to phosphorus of 1.0-1.4 and the mole ratio of magnesium to phosphorus of 0.8-1.2.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (2)
1. An ammonia nitrogen wastewater treatment system, includes mixed reaction tank, sedimentation tank, good oxygen contact oxidation tank, stoving pyrolyzer, acidolysis tank and acidizing fluid absorption tank, its characterized in that: the ammonia nitrogen wastewater treatment system also comprises a precipitated product filtering and flushing mechanism;
the sediment product filtering and flushing mechanism comprises a sediment product washing cylinder (1), an active driving mechanism (2) is arranged inside the sediment product washing cylinder (1), a filter plate (3) is arranged in the middle of an inner cavity of the sediment product washing cylinder (1), the filter plate (3) is sleeved outside the active driving mechanism (2), a compression dewatering mechanism (4) is arranged at the top of the outer side of the active driving mechanism (2) in a transmission manner, a trigger driving mechanism (5) is arranged at the bottom of the outer side of the active driving mechanism (2), and a plurality of groups of bidirectional disturbance mechanisms (6) are arranged between the filter plate (3) and the compression dewatering mechanism (4);
the active driving mechanism (2) comprises a driving motor (21), a driving shaft (22) and driving convex teeth (23);
the driving motor (21) is fixedly arranged at the bottom of the sediment washing barrel (1), threads are arranged on the outer side of the driving shaft (22), the driving shaft (22) is positioned inside the sediment washing barrel (1) and is in transmission connection with the driving motor (21), and the driving convex teeth (23) are fixedly arranged at the bottom of the outer side of the driving shaft (22);
the compression dewatering mechanism (4) comprises a compression plate (41) and a plurality of groups of guide assemblies, wherein each guide assembly comprises a guide sleeve (42), an annular sleeve plate (43) and a first spring (44);
the compression plate (41) is sleeved on the outer side of the driving shaft (22) and is in threaded connection with the driving shaft (22), the guide sleeve (42) is arranged on the compression plate (41) in a sliding penetrating mode, the annular sleeve plate (43) is fixedly sleeved on the top of the outer side of the guide sleeve (42), the first spring (44) is sleeved on the top of the outer side of the guide sleeve (42), one end of the first spring (44) is fixedly connected with the compression plate (41) and the other end of the first spring is fixedly connected with the annular sleeve plate (43);
the trigger type driving mechanism (5) comprises a transmission sleeve (51), a driving gear (52), a positioning sleeve (53), a trigger rod (54) and a second spring (55);
the device comprises a driving sleeve (51), a plurality of driving grooves, a driving gear (52), a positioning sleeve (53), a plurality of trigger rods (54) and a second spring (55), wherein the driving sleeve (51) is slidably sleeved on the outer side of a driving shaft (22), the inner side of the driving sleeve (51) is provided with a plurality of driving grooves, the driving grooves are matched with driving convex teeth (23), the driving gear (52) is fixedly sleeved on the outer side of the driving sleeve (51), the positioning sleeve (53) is rotatably sleeved on the outer side of the driving sleeve (51) through a bearing, the trigger rods (54) are uniformly and fixedly arranged on the outer side of the positioning sleeve (53), one end of the second spring (55) is sleeved on the outer side of the driving shaft (22), and one end of the second spring (55) is fixedly connected with the inner wall of a sediment washing cylinder (1) and the other end of the second spring is fixedly connected with the bottom of the positioning sleeve (53);
the bidirectional disturbance mechanism (6) comprises a threaded sleeve (61), a threaded sleeve (62), an upper disturbance plate (63), a avoidance groove (64), a driven gear (65), a transmission shaft (66) and a lower disturbance plate (67);
the utility model provides a filter plate, including filter plate (3) and filter plate (61), screw sleeve (61) bottom and adjacent trigger rod (54) fixed connection, screw sleeve (61) outside top is fixed to be cup jointed and is provided with annular bulge, screw sleeve (62) rotate nested setting in filter plate (3) top through the bearing, screw sleeve (62) cup joint set up in screw sleeve (61) outside and with screw sleeve (61) threaded connection, go up disturbance board (63) are provided with a plurality of, a plurality of go up disturbance board (63) evenly fix and set up in screw sleeve (62) outside, dodge groove (64) and set up in screw sleeve (61) side bottom, driven gear (65) are located dodge inslot (64), transmission shaft (66) rotate through the bearing and set up in screw sleeve (61) and guide sleeve (42) inboard, driven gear (65) are fixed to be set up in transmission shaft (66) bottom, down disturbance board (67) are provided with a plurality of down disturbance board (67) evenly fix and set up in screw sleeve (61) outside.
2. The ammonia nitrogen wastewater treatment method of an ammonia nitrogen wastewater treatment system according to claim 1, comprising the steps of:
s1, adding wastewater and alkali liquor into a mixed reaction tank, adding magnesium salt and phosphate solution into the wastewater, stirring and mixing, separating and precipitating, inputting a precipitated product into a precipitated product washing cylinder (1) through a pipeline, conveying a water body into an aerobic contact oxidation tank for treatment, and inputting ammonia gas into an acid liquor absorption tank for recovery;
s2, after entering the interior of the sediment washing cylinder (1), sediment is blocked by the filter plate (3) and then stays at the top of the filter plate (3), at the moment, the driving motor (21) drives the driving shaft (22) to rotate clockwise, the driving shaft (22) drives the compression plate (41) to descend, the compression plate (41) descends and then compacts the sediment at the top of the filter plate (3), and then waste water reserved in the sediment passes through the filter plate (3) and flows to the bottom of the inner cavity of the sediment washing cylinder (1) and then flows back to the mixing reaction tank through a pipeline;
s3, after the first filtering is finished, the driving motor (21) drives the driving shaft (22) to rotate anticlockwise, so that the compression plate (41) is lifted and reset, at the moment, clear water is injected into the sediment washing cylinder (1) through a pipeline, sediment is washed after the clear water is injected, after the water injection is finished, the driving motor (21) drives the driving shaft (22) to rotate clockwise again, and then the compression plate (41) descends again;
s4, in the descending process of the compression plate (41), the guide sleeve (42) and the threaded sleeve (61) are driven to synchronously descend, the threaded sleeve (62) is driven to rotate clockwise at the top of the filter plate (3) when the threaded sleeve (61) descends, and then the plurality of lower disturbance plates (67) are driven to synchronously rotate clockwise to disturb the precipitated products and the washing water, so that the washing efficiency is accelerated;
s5, the threaded sleeve (61) descends to drive the trigger rod (54) to synchronously descend, the trigger rod (54) descends to drive the transmission sleeve (51) to descend through the positioning sleeve (53), the transmission sleeve (51) descends to slide to the outer side of the driving convex teeth (23), at the moment, the driving shaft (22) drives the transmission sleeve (51) to synchronously rotate through the driving convex teeth (23) in the rotating process, the transmission sleeve (51) drives the driving gear (52) to synchronously rotate clockwise, then the driving gear (52) drives the driven gear (65) to anticlockwise rotate, the driven gear (65) drives the plurality of lower disturbance plates (67) to anticlockwise rotate through the transmission shaft (66), and then the upper disturbance plates (63) are matched to disturbance precipitated products and washing water in different directions;
s6, along with the continuous descending of the guide sleeve (42) and the threaded sleeve (61), the annular protruding part at the top of the outer side of the threaded sleeve (61) is pressed on the top of the threaded sleeve (62), at the moment, the threaded sleeve (62) is not rotated any more, the compression plate (41) and the threaded sleeve (61) cannot continuously descend, at the moment, along with the continuous descending of the compression plate (41), the compression plate (41) stretches the first spring (44), when the descending distance of the compression plate (41) reaches a threshold value, the extrusion of a precipitated product is completed, washing water flows to the bottom of the inner cavity of the precipitated product washing cylinder (1) through the filter plate (3), and then flows back to the mixing reaction tank through a pipeline;
s7, enabling the driving motor (21) to drive the driving shaft (22) to rotate anticlockwise, resetting the compression plate (41) again, opening a valve on a precipitated product output pipe on the right side of the precipitated product washing cylinder (1) in the resetting process of the compression plate (41), and continuously pushing the inlet of the precipitated product output pipe to be discharged along with the continuous rotation of the plurality of upper disturbance plates (63);
s8, the discharged precipitate product enters a drying pyrolyzer for pyrolysis treatment, half of the pyrolysis product is recycled as liquid medicine into a mixing reaction tank, the other half of the pyrolysis product is added into an acidolysis tank for acidolysis, the acidolysis product is recycled into the mixing reaction tank, and ammonia gas generated in the pyrolysis process is also input into an acid liquor absorption tank for recycling;
s9, repeating the steps S1-S8, and adding magnesium salt and phosphate solution for continuous treatment when the solution in the mixed reaction tank does not meet the mole ratio of nitrogen to phosphorus of 1.0-1.4 and the mole ratio of magnesium to phosphorus of 0.8-1.2.
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