CN117069245A - Sewage deep denitrification reactor - Google Patents
Sewage deep denitrification reactor Download PDFInfo
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- CN117069245A CN117069245A CN202210507376.6A CN202210507376A CN117069245A CN 117069245 A CN117069245 A CN 117069245A CN 202210507376 A CN202210507376 A CN 202210507376A CN 117069245 A CN117069245 A CN 117069245A
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- Prior art keywords
- denitrification reactor
- water
- culture
- sewage
- deep denitrification
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- 239000010865 sewage Substances 0.000 title claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 165
- 244000005700 microbiome Species 0.000 claims abstract description 47
- 239000000945 filler Substances 0.000 claims abstract description 9
- 238000007711 solidification Methods 0.000 claims abstract description 5
- 230000008023 solidification Effects 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 45
- 229910052799 carbon Inorganic materials 0.000 claims description 45
- 241000894006 Bacteria Species 0.000 claims description 39
- 241001509286 Thiobacillus denitrificans Species 0.000 claims description 21
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 20
- 229940005654 nitrite ion Drugs 0.000 claims description 20
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 16
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 239000001963 growth medium Substances 0.000 claims description 9
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 9
- 229910021529 ammonia Inorganic materials 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 241001453382 Nitrosomonadales Species 0.000 claims description 6
- 230000000813 microbial effect Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 4
- 241000605118 Thiobacillus Species 0.000 claims description 3
- 235000015097 nutrients Nutrition 0.000 claims description 3
- 238000012136 culture method Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 238000000034 method Methods 0.000 description 11
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 239000002243 precursor Substances 0.000 description 6
- 239000000969 carrier Substances 0.000 description 4
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010170 biological method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a sewage deep denitrification reactor, and relates to the technical field of sewage treatment. The sewage deep denitrification reactor comprises a deep denitrification reactor body and a central control system, wherein a water distribution system is arranged at the bottom of the deep denitrification reactor body, a solidification carrier microorganism generator is fixedly connected to the inner side of the lower part of the deep denitrification reactor body, a combined filler is arranged at the top end of a supporting layer, and an annular water outlet weir is fixedly connected to the top end of the deep denitrification reactor body. The water is rectified through the water distributor and the annular water outlet weir with the zigzag top, a water distribution area and a clear water area are respectively formed at the bottom and the top of the deep denitrification reactor equipment body, the water conservancy structure is optimized, the impact load born by the denitrification reactor is reduced, the sewage is buffered through the annular buffer strip and the annular baffle, the impact born by the microorganism parent in the annular carrier is reduced, the denitrification uniformity of the reactor is good, and the water quality of the effluent is guaranteed.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage deep denitrification reactor.
Background
The excessive nitrogen element in the water body is one of the important factors causing water pollution, the hazard brought by the excessive nitrogen element is various, one of the prominent problems is eutrophication of the water body, the ecological balance of the water body is destroyed, the water taking safety of a water source area is threatened, the shortage situation of water resources is further aggravated, and the denitrification reactor can convert nitrate nitrogen into gaseous nitrogen through a denitrification process.
The denitrification process mainly comprises a break point chlorination method, an ion exchange method, a membrane separation method, a biological method denitrification and the like, wherein the biological denitrification is the most economical and feasible, the existing biological method denitrification reactor has poor impact load resistance, a hydraulic structure is designed to be optimized, equipment is easy to receive excessive impact load, sewage has a short flow phenomenon to influence the quality of effluent, in addition, the carbon source adding accuracy of the denitrification reactor is required to be improved, and the problems of COD (chemical oxygen demand) exceeding and total nitrogen exceeding are easy to occur at a water outlet of the reactor.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a sewage deep denitrification reactor, which solves the problems of poor effluent quality and insufficient carbon source adding accuracy of the denitrification reactor.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the sewage deep denitrification reactor comprises a deep denitrification reactor device body and a central control system, wherein a water distribution system is arranged at the bottom of the deep denitrification reactor device body, a solidification carrier microorganism generator is fixedly connected to the inner side of the lower part of the deep denitrification reactor device body, a supporting layer is arranged on the upper side of the solidification carrier microorganism generator and is fixedly connected to the inner side of the deep denitrification reactor device body, a combined filler is arranged at the top end of the supporting layer, an annular water outlet weir is fixedly connected to the top end of the deep denitrification reactor device body, the water distribution system is communicated with a carbon source feeding system, and the deep denitrification reactor device body is communicated with a drainage system;
the solidifying carrier microorganism generator comprises an annular pipe and an annular buffer strip, an annular carrier is arranged on the inner side of the annular pipe, an annular opening is formed in the bottom of the annular pipe, annular baffles are arranged on the inner side and the outer side of the annular opening, the central control system comprises a controller, and the controller is connected with a first nitrate ion sensor, a first nitrite ion sensor, a first COD sensor, a second nitrate ion sensor, a second nitrite ion sensor and a second COD sensor through wireless signals.
Preferably, adjacent annular pipes are connected through connecting rods, the central lines of a plurality of annular pipes are circular, the central lines of a plurality of annular pipes are coplanar and concentric, the difference of the radiuses of the central lines of adjacent annular pipes is equal, the outermost side of the annular pipes is connected with the deep denitrification reactor equipment body through the connecting rods, microorganism precursors are arranged in the annular carriers, the annular baffle is fixedly connected to the bottom of the annular pipes, the cross section of the annular baffle is arc-shaped, the annular buffer strips are fixedly connected to the inside of the annular pipes through the connecting rods, and evenly distributed through holes are formed in the top of the annular pipes and the inside of the supporting layer.
Preferably, the water distribution system comprises a water supply pipe and a water distributor, wherein the water supply pipe is communicated with the sewage lifting pump, a water outlet of the sewage lifting pump is communicated with a first check valve, a water inlet pipe is fixedly connected to the top end of the first check valve and is communicated with the water distributor, the water inlet pipe penetrates through the bottom wall of the deep denitrification reactor equipment body, and the water distributor is fixedly connected to the bottom end of the inner side of the deep denitrification reactor equipment body.
Preferably, the carbon source adding system comprises a carbon source tank and a third check valve, wherein the bottom of the carbon source tank is communicated with a discharge valve, the left end of the discharge valve is communicated with two metering pumps, the water outlet of each metering pump is communicated with a second check valve, the top end of each second check valve is communicated with a mass flowmeter, the right end of each third check valve is communicated with two mass flowmeters, the left end of each third check valve is communicated with a water inlet pipe, the third check valve is fixedly connected to the bottom end of the deep denitrification reactor equipment body, the height of the deep denitrification reactor equipment body is 13-16 m, and the diameter of the deep denitrification reactor equipment body is 2.5-3.5 m.
Preferably, the drainage system comprises a water collecting cover and a drain pipe, wherein the bottom of the water collecting cover is communicated with a three-way valve, the right end of the three-way valve is communicated with a water storage tank, the top end of the inner side of the water storage tank is provided with a liquid level meter, and the bottom end of the three-way valve is communicated with the drain pipe.
Preferably, the water collecting cover is fixedly connected to the outer side of the top of the deep denitrification reactor equipment body, the annular water outlet weir is arranged in the water collecting cover, and the upper part of the annular water outlet weir is in a zigzag shape.
Preferably, the first nitrate ion sensor, the first nitrite ion sensor and the first COD sensor are all arranged on the inner side of the bottom of the deep denitrification reactor equipment body, the second nitrate ion sensor, the second nitrite ion sensor and the second COD sensor are all arranged on the inner side of the top of the deep denitrification reactor equipment body, and the controller is connected with the sewage lifting pump, the discharge valve, the metering pump, the mass flowmeter, the three-way valve and the liquid level meter through wireless signals.
Preferably, the method for culturing the microbial parent substance comprises the following steps:
s1, microorganism domestication
Inoculating denitrifying bacteria into a culture dish A filled with deionized water, inoculating anaerobic ammonia oxidation bacteria into a culture dish B filled with deionized water, inoculating thiobacillus denitrificans into a culture dish C filled with deionized water, adding no nutrient substances into the culture dish A, the culture dish B and the culture dish C, putting the denitrifying bacteria, the anaerobic ammonia oxidation bacteria and the thiobacillus denitrificans into a dormant state, after 7-10 d, inoculating the denitrifying bacteria in the culture dish A into a plurality of culture bottles A filled with DM culture medium, inoculating the anaerobic ammonia oxidation bacteria in the culture dish B into a plurality of culture bottles B filled with MSF culture medium, inoculating the thiobacillus denitrificans in the culture dish C into a plurality of culture bottles C filled with thiobacillus denitrificans standard culture medium, adding nitrogen-containing sewage in a sewage treatment plant into the culture bottles A, the culture bottles B and the culture bottles C, placing the culture bottles A, B and the culture bottles C into an anaerobic working station for anaerobic culture, and after 36-42 h, selecting good denitrifying bacteria, the anaerobic ammonia oxidation bacteria and the good thiobacillus denitrifying bacteria from the culture bottles A, the culture bottles B and the culture bottles C;
s2, symbiotic culture
Adding nitrogen-containing sewage in a sewage treatment plant into a plurality of culture bottles D, inoculating denitrifying bacteria, anaerobic ammonia oxidizing bacteria and thiobacillus denitrificans with good growth vigor in S1 into each culture bottle D, adding organic carbon sources and carbonates into the culture bottles D, performing symbiotic culture, selecting the culture bottles D with good growth vigor of the denitrifying bacteria, the anaerobic ammonia oxidizing bacteria and the thiobacillus denitrificans after 48-54 hours, and inoculating the denitrifying bacteria, the anaerobic ammonia oxidizing bacteria and the thiobacillus denitrificans in the culture bottles D into a culture tank filled with the nitrogen-containing sewage in the sewage treatment plant for propagation culture, and obtaining microorganism parent after 3-5 days.
Working principle: the sewage and the carbon source are pumped into the deep denitrification reactor equipment body respectively through the water distribution system and the carbon source feeding system, the sewage is denitrified through the cooperation of the solidified carrier microorganism generator and the combined filler, the water discharged from the annular water outlet weir is transferred through the drainage system, the sewage denitrification process is monitored and regulated through the central control system, the sewage in the water supply pipe is led into the water inlet pipe by the sewage lifting pump, the discharge valve is opened, the carbon source in the carbon source tank is led into the water inlet pipe by the metering pump, the sewage and the carbon source are mixed and then enter the water distributor upwards along the water inlet pipe, the sewage and the carbon source are uniformly distributed in the deep denitrification reactor equipment body, the sewage and the carbon source move upwards from below in the deep denitrification reactor equipment body, the solidified carrier microorganism generator generates microorganisms upwards, microorganisms generated by a microorganism parent body uniformly enter the combined filler through a plurality of annular pipes and through holes on the supporting layer, the microorganisms in the combined filler carry out denitrification treatment on sewage, the denitrified water overflows from the annular water outlet weir to the water collecting cover, the left end and the right end of the three-way valve are communicated, the bottom end is closed, the water flowing out of the water collecting cover enters the water storage tank through the three-way valve, the liquid level meter is matched with the controller to detect the liquid level height in the water storage tank, if the liquid level rises to an upper limit threshold value, the left end and the bottom end of the three-way valve are communicated, the right end is closed, the water is discharged from the drain pipe, if the liquid level in the water storage tank falls to a lower limit threshold value, the left end and the right end of the three-way valve are communicated again, the bottom end is closed again, the sewage is buffered through the annular buffer bar and the annular baffle plate in the process of solidifying carrier microorganism parent body, the impact on the annular carrier is reduced in the denitrification treatment process, the controller carries out variable frequency adjustment on the sewage lifting pump, the metering pump and the mass flowmeter through information fed back by the first nitrate ion sensor, the first nitrite ion sensor, the first COD sensor, the second nitrate ion sensor, the second nitrite ion sensor and the second COD sensor.
(III) beneficial effects
The invention provides a sewage deep denitrification reactor. The beneficial effects are as follows:
1. according to the invention, the water body is rectified through the water distributor and the annular water outlet weir with the zigzag top, the water distribution area and the clear water area are respectively formed at the bottom and the top of the deep denitrification reactor equipment body, the water conservancy structure is optimized, the water flow uniformly passes through the deep denitrification reactor equipment body, the impact load born by the denitrification reactor is reduced, the annular buffer strip and the annular baffle are used for buffering the sewage, the impact on microorganism parent bodies in the annular carrier is reduced, microorganisms generated by the microorganism parent bodies uniformly enter the combined type filling material through the through holes on the annular pipes and the supporting layer, the denitrification uniformity is ensured, the microorganism parent bodies are subjected to domestication and symbiotic culture, the dormancy capacity is strong, the multienzyme system cooperative treatment can be carried out on nitrate nitrogen in the sewage, and the water quality of the effluent is ensured.
2. According to the invention, sewage and a carbon source are pumped into the deep denitrification reactor equipment body respectively through the water distribution system and the carbon source feeding system, and the controller carries out variable frequency adjustment on the sewage lifting pump, the metering pump and the mass flowmeter through the information fed back by the first nitrate ion sensor, the first nitrite ion sensor, the first COD sensor, the second nitrate ion sensor, the second nitrite ion sensor and the second COD sensor, so that the accurate feeding of the carbon source is realized, and the exceeding of COD and the exceeding of total nitrogen are effectively prevented.
3. According to the invention, the liquid level in the water storage tank is detected by the liquid level meter matched with the controller, the state of the three-way valve is regulated according to the detection result, the trend of water flowing out of the water collection cover is controlled, water in the water storage tank can be used as a solvent of a carbon source in the carbon source tank, and the water resource is recycled by the drainage system.
Drawings
FIG. 1 is a front perspective view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic diagram of a water distribution system according to the present invention;
FIG. 4 is a schematic diagram of the internal structure of a solidified carrier microbial generator according to the present invention;
FIG. 5 is a front perspective view of the carbon source adding system of the present invention;
FIG. 6 is a front perspective view of the central control system of the present invention;
FIG. 7 is a front perspective view of the drainage system of the present invention;
fig. 8 is a schematic view of the internal structure of the water storage tank of the present invention.
Wherein, 1, the deep denitrification reactor equipment body; 2. a water distribution system; 3. solidifying the carrier microorganism generator; 4. a support layer; 5. a combined filler; 6. an annular water outlet weir; 7. a carbon source adding system; 8. a central control system; 9. a drainage system; 201. a water supply pipe; 202. a sewage lifting pump; 203. a first check valve; 204. a water inlet pipe; 205. a water distributor; 301. an annular tube; 302. an annular carrier; 303. an annular opening; 304. an annular baffle; 305. an annular buffer bar; 701. a carbon source tank; 702. a discharge valve; 703. a metering pump; 704. a second check valve; 705. a mass flowmeter; 706. a third check valve; 801. a controller; 802. a first nitrate ion sensor; 803. a first nitrite ion sensor; 804. a first COD sensor; 805. a second nitrate ion sensor; 806. a second nitrite ion sensor; 807. a second COD sensor; 901. a water collecting cover; 902. a three-way valve; 903. a water storage tank; 904. a liquid level gauge; 905. and (5) a water drain pipe.
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.
Examples:
as shown in fig. 1-8, the embodiment of the invention provides a sewage deep denitrification reactor, which comprises a deep denitrification reactor device body 1 and a central control system 8, wherein the bottom of the deep denitrification reactor device body 1 is provided with a water distribution system 2, the inner side of the lower part of the deep denitrification reactor device body 1 is fixedly connected with a curing carrier microorganism generator 3, the upper side of the curing carrier microorganism generator 3 is provided with a supporting layer 4, the supporting layer 4 is fixedly connected with the inner side of the deep denitrification reactor device body 1, the top end of the supporting layer 4 is provided with a combined filler 5, the top end of the deep denitrification reactor device body 1 is fixedly connected with an annular water outlet weir 6, the water distribution system 2 is communicated with a carbon source feeding system 7, the deep denitrification reactor device body 1 is communicated with a drainage system 9, sewage is pumped into the deep denitrification reactor device body 1 through the water distribution system 2, the carbon source is pumped into the deep denitrification reactor device body 1 through the carbon source feeding system 7, the sewage is denitrification treated through the curing carrier microorganism generator 3 in combination with the combined filler 5, the sewage is transferred to the annular water outlet weir 6 through the drainage system 9, the process of the sewage is discharged from the annular water outlet weir 6 is monitored and the central control system 8 is regulated;
the solidified carrier microorganism generator 3 comprises an annular tube 301 and an annular buffer strip 305, an annular carrier 302 is arranged on the inner side of the annular tube 301, an annular opening 303 is arranged at the bottom of the annular tube 301, annular baffles 304 are arranged on the inner side and the outer side of the annular opening 303, a central control system 8 comprises a controller 801, the controller 801 is connected with a first nitrate ion sensor 802, a first nitrite ion sensor 803, a first COD sensor 804, a second nitrate ion sensor 805, a second nitrite ion sensor 806 and a second COD sensor 807 through wireless signals, total nitrogen is stably reduced to 10mg/L after sewage is treated, total nitrogen is reduced to 1.5mg/L at the lowest, the solidified carrier microorganism generator 3 is effective for a long time, microorganism precursors are specially protected, microorganisms can be continuously released, attenuation is avoided, the service life is over 10 years, the protected carrier solidified microorganism precursors can continuously generate microorganisms in suitable sewage, the microorganisms are propagated in the sewage in a geometric manner, the sewage is in a short time, the advanced denitrification reactor 1 can directly participate in denitrification process for a long time, and the conventional technical problem is solved.
Adjacent annular pipes 301 are connected through connecting rods, the central lines of the annular pipes 301 are circular, the central lines of the annular pipes 301 are coplanar and concentric, the radius difference of the central lines of the adjacent annular pipes 301 is equal, the outermost annular pipes 301 are connected with the deep denitrification reactor equipment body 1 through the connecting rods, microorganism precursors are arranged in the annular carriers 302, annular baffles 304 are fixedly connected to the bottoms of the annular pipes 301, the cross sections of the annular baffles 304 are arc-shaped, annular buffer strips 305 are fixedly connected to the interiors of the annular pipes 301 through the connecting rods, through holes which are uniformly distributed are formed in the tops of the annular pipes 301 and the interiors of the supporting layers 4, sewage is buffered through the annular buffer strips 305 and the annular baffles 304 in the process of solidifying the carrier microorganism generator 3, the sewage and a carbon source bypassing the annular buffer strips 305 enter the annular carriers 302 in the annular pipes 301 from annular openings 303, the annular buffer strips 305 and the annular baffles 304 reduce the impact of the microorganism precursors in the annular carriers 302, and the microorganism precursors have extremely strong impact resistance to toxic substances and load change, and the safety and stability of the denitrification reactor are ensured.
The water distribution system 2 comprises a water supply pipe 201 and a water distributor 205, wherein the water supply pipe 201 is communicated with a sewage lifting pump 202, a water outlet of the sewage lifting pump 202 is communicated with a first check valve 203, a water inlet pipe 204 is fixedly connected to the top end of the first check valve 203, the water inlet pipe 204 is communicated with the water distributor 205, the water inlet pipe 204 penetrates through the bottom wall of the deep denitrification reactor equipment body 1, the water distributor 205 is fixedly connected to the bottom end of the inner side of the deep denitrification reactor equipment body 1, the height of the deep denitrification reactor equipment body 1 is 15m, and the diameter of the deep denitrification reactor equipment body 1 is 3m.
The carbon source adding system 7 comprises a carbon source tank 701 and a third check valve 706, wherein the bottom of the carbon source tank 701 is communicated with a discharge valve 702, the left end of the discharge valve 702 is communicated with two metering pumps 703, the water outlet of the metering pumps 703 is communicated with a second check valve 704, the top end of the second check valve 704 is communicated with a mass flowmeter 705, the right end of the third check valve 706 is communicated with two mass flowmeters 705, the left end of the third check valve 706 is communicated with a water inlet pipe 204, the third check valve 706 is fixedly connected to the bottom end of the deep denitrification reactor equipment body 1, the first check valve 203, the second check valve 704 and the third check valve 706 prevent water in the water inlet pipe 204 from flowing backwards, the sewage lifting pump 202 and the metering pumps 703 are prevented from being polluted, the sewage lifting pump 202 guides sewage in the water inlet pipe 201 into the water inlet pipe 204, the discharge valves 702 are opened, the metering pumps 703 guide the carbon source in the water inlet pipe 204, the sewage and the carbon source upwards enter the water distributor 205 along the water inlet pipe 204 after being mixed with the carbon source, the sewage and the carbon source are uniformly distributed in the deep denitrification reactor equipment body 1, the sewage and the carbon source body are fixedly connected to the bottom end of the deep denitrification reactor body 1, the sewage and the carbon source uniformly enter the microorganism carrier layer 301 and the microorganism carrier layer 5 are uniformly and uniformly move upwards, and the microorganism carrier layer 5 is produced in the microorganism carrier layer 5, and microorganism carrier 5 is uniformly and microorganism carrier 5 is produced in the combined effect.
The drainage system 9 comprises a water collecting cover 901 and a drain pipe 905, wherein the bottom of the water collecting cover 901 is communicated with a three-way valve 902, the right end of the three-way valve 902 is communicated with a water storage tank 903, the top end of the inner side of the water storage tank 903 is provided with a liquid level meter 904, the bottom end of the three-way valve 902 is communicated with the drain pipe 905, the denitrified water overflows to the water collecting cover 901 from an annular water outlet weir 6, the left end and the right end of the three-way valve 902 are communicated, the bottom end of the three-way valve 902 is closed, the water flowing out of the water collecting cover 901 enters the water storage tank 903 through the three-way valve 902, the liquid level meter 904 is matched with a controller 801 to detect the liquid level in the water storage tank 903, if the liquid level rises to an upper limit threshold, the left end and the bottom end of the three-way valve 902 are communicated, the right end of the three-way valve 902 is closed, the water is discharged from the drain pipe 905, and if the liquid level in the water storage tank 903 falls to a lower limit threshold, the left end and the two ends of the three-way valve 902 are communicated again, the bottom end is closed again, the water in the water storage tank 903 can be used as a solvent of a carbon source in the carbon source tank, and the water drain system 9 is recycled, thereby facilitating the development of the environmental protection.
The water collecting cover 901 is fixedly connected to the outer side of the top of the deep denitrification reactor equipment body 1, the annular water outlet weir 6 is arranged in the water collecting cover 901, the upper portion of the annular water outlet weir 6 is in a zigzag shape, the annular water outlet weir 6 with the zigzag top and the water distributor 205 rectifies water, a water distribution area and a clear water area are respectively formed at the bottom and the top of the deep denitrification reactor equipment body 1, a water conservancy structure is optimized, water flow is guaranteed to uniformly pass through the deep denitrification reactor equipment body 1, and impact load born by a denitrification reactor is reduced.
The first nitrate ion sensor 802, the first nitrite ion sensor 803 and the first COD sensor 804 are all arranged on the inner side of the bottom of the deep denitrification reactor device body 1, the second nitrate ion sensor 805, the second nitrite ion sensor 806 and the second COD sensor 807 are all arranged on the inner side of the top of the deep denitrification reactor device body 1, the controller 801 is connected with the sewage lifting pump 202, the discharge valve 702, the metering pump 703, the mass flowmeter 705, the three-way valve 902 and the liquid level meter 904 through wireless signals, and the controller 801 is used for carrying out variable frequency adjustment on the sewage lifting pump 202, the metering pump 703 and the mass flowmeter 705 through the information fed back by the first nitrate ion sensor 802, the first nitrite ion sensor 803, the first COD sensor 804, the second nitrite ion sensor 805, the second COD sensor 807, realizing front-back multistage feedback linkage control, ensuring the accurate feeding of a carbon source and effectively preventing the exceeding of the water discharge volume and the total nitrogen exceeding state of the deep denitrification reactor device body 1.
The culture method of the microbial parent comprises the following steps:
s1, microorganism domestication
Inoculating denitrifying bacteria into a culture dish A filled with deionized water, inoculating anaerobic ammoxidation bacteria into a culture dish B filled with deionized water, inoculating thiobacillus denitrificans into a culture dish C filled with deionized water, adding no nutrient substances into the culture dish A, the culture dish B and the culture dish C, putting the denitrifying bacteria, the anaerobic ammoxidation bacteria and the thiobacillus denitrificans into a dormant state, inoculating denitrifying bacteria in the culture dish A into a plurality of culture bottles A filled with DM culture medium after 8d, inoculating anaerobic ammoxidation bacteria in the culture dish B into a plurality of culture bottles B filled with MSF culture medium, inoculating thiobacillus denitrificans in the culture dish C into a plurality of culture bottles C filled with thiobacillus denitrificans standard culture medium, adding nitrogen-containing sewage in a sewage treatment plant into the culture bottles A, the culture bottles B and the culture bottles C, placing the culture bottles A, B and the culture bottles C into an anaerobic working station for anaerobic culture, and screening the denitrifying bacteria, the anaerobic ammoxidation bacteria and the thiobacillus denitrifying bacteria from the culture bottles A, B and the culture bottles C after 39 h;
s2, symbiotic culture
Adding nitrogen-containing sewage in a sewage treatment plant into a plurality of culture bottles D, inoculating denitrifying bacteria, anaerobic ammoxidation bacteria and thiobacillus denitrificans with good growth vigor in S1 into each culture bottle D, adding organic carbon sources and carbonates into the culture bottles D, performing symbiotic culture, selecting the culture bottles D with good growth vigor of the denitrifying bacteria, the anaerobic ammoxidation bacteria and the thiobacillus denitrificans after 52 hours, inoculating the denitrifying bacteria, the anaerobic ammoxidation bacteria and the thiobacillus denitrificans in the culture bottles D into a culture tank filled with the nitrogen-containing sewage, the organic carbon sources and the carbonates in the sewage treatment plant for propagation culture, obtaining a microbial parent after 5 days, performing acclimatization and symbiotic culture on the microbial parent, and ensuring the quality of effluent by performing multienzyme system synergistic treatment on nitrate nitrogen in the sewage.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a sewage degree of depth denitrification reactor, includes degree of depth denitrification reactor equipment body (1) and well accuse system (8), its characterized in that: the deep denitrification reactor comprises a deep denitrification reactor device body (1), wherein a water distribution system (2) is arranged at the bottom of the deep denitrification reactor device body (1), a solidification carrier microorganism generator (3) is fixedly connected to the inner side of the lower part of the deep denitrification reactor device body (1), a supporting layer (4) is arranged on the upper side of the solidification carrier microorganism generator (3) and fixedly connected to the inner side of the deep denitrification reactor device body (1), a combined filler (5) is arranged at the top end of the supporting layer (4), an annular water outlet weir (6) is fixedly connected to the top end of the deep denitrification reactor device body (1), the water distribution system (2) is communicated with a carbon source adding system (7), and the deep denitrification reactor device body (1) is communicated with a drainage system (9);
the solidifying carrier microorganism generator (3) comprises an annular tube (301) and an annular buffer strip (305), an annular carrier (302) is arranged on the inner side of the annular tube (301), an annular opening (303) is formed in the bottom of the annular tube (301), annular baffles (304) are arranged on the inner side and the outer side of the annular opening (303), the central control system (8) comprises a controller (801), and the controller (801) is connected with a first nitrate ion sensor (802), a first nitrite ion sensor (803), a first COD sensor (804), a second nitrate ion sensor (805), a second nitrite ion sensor (806) and a second COD sensor (807) through wireless signals.
2. A sewage deep denitrification reactor according to claim 1, wherein: adjacent ring pipe (301) are passed through the connecting rod and link to each other, and a plurality of the central line of ring pipe (301) is circular, and a plurality of the central line coplanarity and the concentricity of ring pipe (301), the radius difference of the central line of adjacent ring pipe (301) equals, and outermost ring pipe (301) are passed through the connecting rod and are linked to each other with degree of depth denitrification reactor equipment body (1), inside microorganism parent that is provided with of ring carrier (302), ring baffle (304) fixed connection is in the bottom of ring pipe (301), the transversal arc of ring baffle (304), ring buffer strip (305) are through the inside of connecting rod fixed connection at ring pipe (301), the inside of the top of ring pipe (301) and supporting layer (4) all is provided with evenly distributed's through-hole.
3. A sewage deep denitrification reactor according to claim 1, wherein: the water distribution system (2) comprises a water supply pipe (201) and a water distributor (205), wherein the water supply pipe (201) is communicated with a sewage lifting pump (202), a water outlet of the sewage lifting pump (202) is communicated with a first check valve (203), the top end of the first check valve (203) is fixedly connected with a water inlet pipe (204), the water inlet pipe (204) is communicated with the water distributor (205), the water inlet pipe (204) penetrates through the bottom wall of the deep denitrification reactor equipment body (1), the water distributor (205) is fixedly connected to the bottom end of the inner side of the deep denitrification reactor equipment body (1), the height of the deep denitrification reactor equipment body (1) is 13-16 m, and the diameter of the deep denitrification reactor equipment body (1) is 2.5-3.5 m.
4. A sewage deep denitrification reactor according to claim 1, wherein: the carbon source adding system (7) comprises a carbon source tank (701) and a third check valve (706), wherein a discharge valve (702) is communicated with the bottom of the carbon source tank (701), the left end of the discharge valve (702) is communicated with two metering pumps (703), the water outlet of each metering pump (703) is communicated with a second check valve (704), the top end of each second check valve (704) is communicated with a mass flowmeter (705), the right end of each third check valve (706) is communicated with two mass flowmeters (705), the left end of each third check valve (706) is communicated with a water inlet pipe (204), and the third check valve (706) is fixedly connected to the bottom end of the deep denitrification reactor equipment body (1).
5. A sewage deep denitrification reactor according to claim 1, wherein: the drainage system (9) comprises a water collecting cover (901) and a drain pipe (905), wherein the bottom of the water collecting cover (901) is communicated with a three-way valve (902), the right end of the three-way valve (902) is communicated with a water storage tank (903), the top end of the inner side of the water storage tank (903) is provided with a liquid level meter (904), and the bottom end of the three-way valve (902) is communicated with the drain pipe (905).
6. The sewage deep denitrification reactor according to claim 5, wherein: the water collecting cover (901) is fixedly connected to the outer side of the top of the deep denitrification reactor equipment body (1), the annular water outlet weir (6) is arranged in the water collecting cover (901), and the upper part of the annular water outlet weir (6) is in a zigzag shape.
7. A sewage deep denitrification reactor according to claim 1, wherein: the device is characterized in that the first nitrate ion sensor (802), the first nitrite ion sensor (803) and the first COD sensor (804) are all arranged on the inner side of the bottom of the deep denitrification reactor device body (1), the second nitrate ion sensor (805), the second nitrite ion sensor (806) and the second COD sensor (807) are all arranged on the inner side of the top of the deep denitrification reactor device body (1), and the controller (801) is connected with the sewage lifting pump (202), the discharge valve (702), the metering pump (703), the mass flowmeter (705), the three-way valve (902) and the liquid level meter (904) through wireless signals.
8. A sewage deep denitrification reactor according to claim 1, wherein: the culture method of the microbial parent comprises the following steps:
s1, microorganism domestication
Inoculating denitrifying bacteria into a culture dish A filled with deionized water, inoculating anaerobic ammonia oxidation bacteria into a culture dish B filled with deionized water, inoculating thiobacillus denitrificans into a culture dish C filled with deionized water, adding no nutrient substances into the culture dish A, the culture dish B and the culture dish C, putting the denitrifying bacteria, the anaerobic ammonia oxidation bacteria and the thiobacillus denitrificans into a dormant state, after 7-10 d, inoculating the denitrifying bacteria in the culture dish A into a plurality of culture bottles A filled with DM culture medium, inoculating the anaerobic ammonia oxidation bacteria in the culture dish B into a plurality of culture bottles B filled with MSF culture medium, inoculating the thiobacillus denitrificans in the culture dish C into a plurality of culture bottles C filled with thiobacillus denitrificans standard culture medium, adding nitrogen-containing sewage in a sewage treatment plant into the culture bottles A, the culture bottles B and the culture bottles C, placing the culture bottles A, B and the culture bottles C into an anaerobic working station for anaerobic culture, and after 36-42 h, selecting good denitrifying bacteria, the anaerobic ammonia oxidation bacteria and the good thiobacillus denitrifying bacteria from the culture bottles A, the culture bottles B and the culture bottles C;
s2, symbiotic culture
Adding nitrogen-containing sewage in a sewage treatment plant into a plurality of culture bottles D, inoculating denitrifying bacteria, anaerobic ammonia oxidizing bacteria and thiobacillus denitrificans with good growth vigor in S1 into each culture bottle D, adding organic carbon sources and carbonates into the culture bottles D, performing symbiotic culture, selecting the culture bottles D with good growth vigor of the denitrifying bacteria, the anaerobic ammonia oxidizing bacteria and the thiobacillus denitrificans after 48-54 hours, and inoculating the denitrifying bacteria, the anaerobic ammonia oxidizing bacteria and the thiobacillus denitrificans in the culture bottles D into a culture tank filled with the nitrogen-containing sewage in the sewage treatment plant for propagation culture, and obtaining microorganism parent after 3-5 days.
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