JP6555770B1 - Method and apparatus for producing a novel biomagnetic serum site filler for water treatment - Google Patents

Abstract

A method for producing a biomagnetic serum site filler for high ammonia nitrogen wastewater treatment that satisfies wastewater discharge standards is provided. After activating the magnetic powder, it is mixed with ceramite, borax and titanium dioxide in a certain ratio, then mixed with water, granulated, dried, fired, washed, dried again, Magnetized to obtain a magnetic serum site filler substrate, and after loading a surface layer material consisting of charcoal, clay, neodymium iron boron and water on the surface of the magnetic serum site filler substrate, secondary drying and firing, and cooling. After that, a biomagnetic serum site filler is obtained. The biomagnetic serum site filler produced by the present invention can greatly improve the removal efficiency of ammonia nitrogen, which is useful for promotion and application in actual biological treatment of sewage. [Selection figure] None

Description

The present invention relates to the technical field of wastewater treatment, and more specifically to a method and apparatus for producing a novel biomagnetic serum site filler for water treatment.

Enhanced biological treatment of high ammonia nitrogen wastewater has always been a hot spot and difficulty in the environmental protection field, and biological treatment of normal high ammonia nitrogen wastewater can meet the requirements of conventional wastewater discharge standards Can not. Magnetic-biocombined wastewater treatment technology is a new bio-enhanced technology, and studies have shown that the presence of a magnetic field can have various effects on microbial metabolism and microbial activity, It is a theoretical basis for application to biological processing. However, at present, reports on the enhancement of biodegradation by magnetic fields are limited to laboratory studies, mainly because current studies mainly use the mode of action of external static magnetic fields,
In actual applications, wastewater treatment facilities are large in volume and difficult to form long-term stable constant-strength magnetic fields, so it is urgently required to search for magnetic field application methods suitable for actual applications.

The technical problem solved by the present invention is that the treatment of high ammonia nitrogen wastewater by conventional biological methods cannot meet the requirements of conventional wastewater discharge standards.

The technical solution of the present invention is as follows.

A method for producing a novel biomagnetic serum site filler for water treatment, comprising the following steps.
S1, Activation of magnetic powder: The magnetic powder is immersed in glutaraldehyde and activated to obtain an activated magnetic powder.
S2, component: serum site, activated magnetic powder, borax, titanium dioxide, 35-45 parts of serum site, 20-40 parts of magnetic powder, 1-5 parts of borax, 1-3 parts of titanium dioxide The mixture A is mixed uniformly and stirred to obtain a mixture A.
S3, granulation and drying: put the mixture A in S2 into a magnetic microbubble stirring and mixing device,
Mix with water to obtain a mixture B, then put the mixture B in a granulator to produce a spherical mixture with a diameter of 6-8 mm, then put the spherical mixture in a drying box, Dry for 2 h to obtain a serum site substrate.
S4, calcination: The ceramsite base material produced in S3 is 2 in a high-temperature calcination furnace in a protective gas atmosphere.
Heating up to 600 ° C. at a temperature rising rate of 00 ° C./h and firing at 600 ° C. for 8 h to obtain a serum site filler substrate having a certain mechanical strength, and the nitrogen atmosphere is mainly ferric tetroxide at high temperature Used to prevent oxidative modification of the filler and to reduce the magnetic field strength after the final magnetization of the filler, 6
Taking a temperature of 00 ° C. and a firing temperature that is too high reduces the magnetic susceptibility of the ferric tetroxide powder.
S5, washing and drying: S4 until the washing solution is clear and free of turbidity and discoloration
The serum site filler substrate obtained by calcination is washed with water, then the washed serum site is placed in an oven at 105 ° C. and dried for 12 hours, and molecular water remaining in the substrate is removed by washing.
S6, magnetization: the serum site filler substrate obtained after the treatment of S5 is magnetized with a magnetizing device,
Finally, a magnetic serum site filler substrate is obtained.
S7, Load surface layer: The magnetic serum site filler substrate produced in S6 is supplied to the rotary spray load device, and the surface layer material is uniformly loaded on the surface of the magnetic serum site filler substrate by the rotary spray load device, and the magnetic mixed serum Get a site filler, where
The surface layer material is a mixture of charcoal, clay, neodymium iron boron and water, and the weight ratio of charcoal, clay, neodymium iron boron and water is 1: 1: 1: 3. Charcoal, clay and neodymium iron boron are each pulverized to 1 to 500 μm and mixed with water to form a slurry.
S8, secondary dry firing: The magnetic mixed serum site filler produced in S7 is placed in a drying box, dried at 95 ° C. for 0.5 to 1 h, and 150 ° C./high temperature in a high-temperature firing furnace under a protective gas atmosphere.
After raising the temperature to 400 ° C. at a rate of h and baking for 0.5 h at 400 ° C. and cooling, a biomagnetic serum site filler is obtained. The charcoal in the surface layer material becomes biomass activated carbon by firing, and the entire surface layer material also forms a loose pore structure and does not block the micropores in the magnetic serum site filler matrix.

According to one aspect of the present invention, the serum site is bauxite, clay, secondary clay, shale,
Manufactured with a mixture of one or more of slate, sea mud clay, mudstone, fly ash, coal gangue.

According to one aspect of the invention, the magnetic powder is a mixture of one or more of triiron tetroxide, ferric trioxide, iron oxide, and barium ferrite.

According to one aspect of the present invention, the protective gas used in S4 and S8 is nitrogen or an inert gas, for example, helium, neon, argon, helium, neon, xenon, etc., such as triiron tetroxide at high temperatures, etc. It is used to prevent oxidative modification of the magnetic powder.

According to one aspect of the present invention, the magnetic microbubble stirring and mixing device comprises:
A variable cross-section water molecule destruction chamber, a passage through which water passes and a magnet provided outside the passage are provided, the cross section of the passage is a variable cross section, the magnet can magnetize water, and the variable A water inlet pipe is provided at one end of the cross-section water molecule destruction chamber, a drain pipe is provided at the other end, the water inlet pipe is connected to a water pump,
A variable cross-section gas-liquid mixing chamber and a gas-liquid mixing chamber are provided therein, and the chamber has a variable cross-section, the upper part of which is connected to the drain pipe and the first intake pipe, and the gas in the chamber is connected to the bottom of the chamber. And a magnetic stirrer capable of stirring the liquid,
The liquid mixing chamber, one end of which is connected to the variable cross-section gas-liquid mixing chamber via a gas-liquid conduit, the other end is provided with a discharge pipe, and an upper portion thereof is connected to an air pump via a second intake pipe. , And connected to a supply pump via a supply pipe, a turbine mixer is provided inside the liquid mixing chamber,
The flow divider and the flow divider have a tubular structure having dense pores therein, the number of flow dividers is two, the connection between the first intake pipe and the variable cross-section gas-liquid mixing chamber, the second intake pipe and the liquid Provided at the connection with the mixing chamber,
The first intake pipe and the second intake pipe are both connected to the air pump via the main intake pipe, and the main intake pipe is provided with an air compressor.
And two flow control valves respectively provided on the water inlet pipe and the supply pipe.

The flow control valve allows the water flow and feed rate to be controlled to achieve the proper ratio between water and material.

The magnetic microbubble stirring and mixing device of the present invention performs water molecule destruction on water and magnetizes the water, then mixes with gas to obtain a mixture of gas and water containing microbubbles, and then A mixture A consisting of ceramsite, activated magnetic powder, borax and titanium dioxide is pumped into a liquid mixing chamber by a supply pipe, and further mixed with a mixture of gas and water, and ceramsite, activated magnetic powder, borax, Titanium dioxide is mixed uniformly with water to form a uniform material,
Furthermore, it further ensures that the biomagnetic serum site produced at a later stage has good cooking properties, has the advantages of relatively high deposition density and volume density, high compressive strength and low fracture rate.

Table 1 shows a comparison result with a conventional general porous ceramsite filler.
Table 1: Comparison of physicochemical properties between the biomagnetic serum site filler of the present invention and a general porous serum site filler

According to one aspect of the invention, the rotary spray load device comprises:
The main chamber and its upper part are arched, the first supply port is provided at one end of the main chamber, the discharge port is provided at the other end,
The spiral supply stirring mechanism inside the main chamber and the spiral supply stirring mechanism are horizontally disposed at the bottom of the main chamber along the length direction of the main chamber, and convey the material supplied from the supply port to the discharge port. Used for and
A plurality of arcuate tracks disposed above the main chamber and a micromotor disposed on each arcuate rail.

A rotary spray head is provided under the micromotor, each rotary spray head is driven by the micromotor, and can reciprocate back and forth on the corresponding arcuate track, Each is connected to the second supply port via a pipeline.

Each micromotor and spiral feed stirring mechanism used in the rotary spray load device of the present invention are supplied with power from an external power source and are not shown in the figure.

The rotary spray load device of the present invention can uniformly spray the surface layer material on the surface of the magnetic serum site filler substrate, improves the loading effect of the surface layer material, and is manufactured biomagnetic serum site. The form of the filler is uniform, energy saving and high efficiency.

The present invention further provides an apparatus for producing a novel biomagnetic serum site filler for water treatment,
An activation tank for activating the magnetic powder;
Magnetic microbubble stirring and mixing device for mixing the serum site, activated magnetic powder, borax, titanium dioxide with water and gas to obtain a mixture B;
A granulator for granulating the mixture B to obtain a spherical mixture;
A first drying chamber for drying the spherical mixture to obtain a serum site substrate;
A first high temperature firing furnace for firing the serum site substrate to obtain a serum site filler substrate;
A first cooling chamber for cooling the serum site filler substrate;
A wash tank for washing the cooled serum site filler substrate;
A second drying chamber for secondary drying of the washed serum site filler substrate;
A magnetizing device for magnetizing the serum site filler substrate after secondary drying;
A rotary spray loading device for loading a surface layer material onto a magnetized magnetic serum site filler substrate to obtain a magnetic mixed serum site filler;
A third drying chamber for drying the magnetic mixed serum site filler;
A second high-temperature firing furnace for secondary firing of the magnetic mixed serum site filler after drying;
A second cooling chamber for secondary cooling of the magnetic mixed serum site filler after the secondary firing.

The present invention further provides for the application of a novel biomagnetic serum site filler for water treatment, which is specifically applied to the treatment of high ammonia nitrogen wastewater.

The present invention has the following advantages over the prior art.
First, the biomagnetic serum site filler produced according to the present invention is easy to apply a film.
Second, compared with general serum site filler, the biomagnetic serum site filler produced according to the present invention has a promoting effect on the biofilm microbial aggregation, increases the specific surface area of the biofilm surface, and Improve biofilm removal effect against contaminants.
Third, the use of the biomagnetic serum site filler produced according to the present invention greatly improves the removal efficiency of ammonia nitrogen compared to general serum site filler of the same shape and specifications, especially high ammonia nitrogen. When used to treat wastewater, the effect is significant.
Fourth, the biomagnetic serum site filler produced according to the present invention is equivalent to a biological treatment reactor in which each filler is one minute added magnetic field, so that the actual biological treatment of sewage (waste water). It is easy to realize the promotion and application of magneto-physicochemical biological efficiency in

FIG. 1 is a schematic view of a magnetic microbubble stirring and mixing apparatus according to the present invention. FIG. 2 is a schematic view of a rotary spray loading apparatus according to the present invention. FIG. 3 is a schematic view of the entire facility according to the present invention. FIG. 4 is a comparative view of the removal effect of ammonia nitrogen. FIG. 5 is an electron micrograph of the biofilm on the surface of the serum site filler after the reactor has been operated for 53 days. Filler, (c) biomagnetic serum site filler produced in Example 3. FIG. 6 shows the ammonia oxidation rate of the filler surface biofilm that the reactor was operated for 53 days. FIG. 7 is the specific oxygen consumption rate of the filler surface biofilm that the reactor was operated for 53 days. FIG. 8 shows the nitrogen-removing enzyme activity of the filler surface biofilm that the reactor was operated for 53 days. FIG. 9 shows the nitrogen removal gene amount of the filler surface biofilm that the reactor was operated for 53 days. Among these, 1-activation tank, 2-magnetic microbubble stirring and mixing apparatus, 3-granulator, 4-first drying chamber, 5-first high-temperature firing furnace, 6-first cooling chamber, 7-cleaning chamber , 8-second drying chamber, 9-magnetization device, 10-rotary spray load device, 11-third drying chamber, 12-second high-temperature firing furnace, 13-second cooling chamber, 2-1 variable cross-section water molecule Destruction chamber, 2-2 water intake pipe, 2-4-water pump, 2-5 variable cross-section gas-liquid mixing chamber, 2-6 first intake pipe, 2-7-magnetic stirrer, 2-8-liquid Mixing chamber, 2-9-gas-liquid piping, 2-10-exhaust pipe, 2-11-second intake pipe, 2-12-air pump, 2-13 supply pipe, 2-14 supply pump, 2-15 -Shunt, 2-16-main intake pipe, 2-17-air compressor, 2-18-flow control valve, 10-1- main chamber, 10 2 first supply port, 10-3- outlet, 10-4- spiral supply stirring mechanism, 10-5- arcuate track, 10-6- micromotor, 10-7- rotating spray head.

The present invention will be further described below with reference to the drawings and specific examples, but the scope of protection of the present invention is not limited thereto.

Example 1
The production of a novel biomagnetic serum site filler for water treatment includes the following steps.
S1, Activation of magnetic powder: The magnetic powder is immersed in glutaraldehyde and activated to obtain an activated magnetic powder.
S2, component: serum site, activated magnetic powder, borax, titanium dioxide, 35-45 parts of serum site, 20-40 parts of magnetic powder, 1-5 parts of borax, 1-3 parts of titanium dioxide The mixture A is mixed uniformly and stirred to obtain a mixture A.
S3, granulation and drying: put the mixture A in S2 into a magnetic microbubble stirring and mixing device,
Mix with water to obtain a mixture B, then put the mixture B in a granulator to produce a spherical mixture with a diameter of 6-8 mm, then put the spherical mixture in a drying box, Dry for 2 h to obtain a serum site substrate.
S4, calcination: The ceramsite base material produced in S3 is 2 in a high-temperature calcination furnace in a protective gas atmosphere.
Heating up to 600 ° C. at a temperature rising rate of 00 ° C./h and firing at 600 ° C. for 8 h to obtain a serum site filler substrate having a certain mechanical strength, and the nitrogen atmosphere is mainly ferric tetroxide at high temperature Used to prevent oxidative modification of the filler and to reduce the magnetic field strength after the final magnetization of the filler, 6
Taking a temperature of 00 ° C. and a firing temperature that is too high reduces the magnetic susceptibility of the ferric tetroxide powder.
S5, washing and drying: S4 until the washing solution is clear and free of turbidity and discoloration
The serum site filler substrate obtained by calcination is washed with water, then the washed serum site is placed in an oven at 105 ° C. and dried for 12 hours, and molecular water remaining in the substrate is removed by washing.
S6, magnetization: the serum site filler substrate obtained after the treatment of S5 is magnetized with a magnetizing device,
Finally, a magnetic serum site filler substrate is obtained.
S7, Load surface layer: The magnetic serum site filler substrate produced in S6 is supplied to the rotary spray load device, and the surface layer material is uniformly loaded on the surface of the magnetic serum site filler substrate by the rotary spray load device, and the magnetic mixed serum Get a site filler, where
The surface layer material is a mixture of charcoal, clay, neodymium iron boron and water, and the weight ratio of charcoal, clay, neodymium iron boron and water is 1: 1: 1: 3. Charcoal, clay and neodymium iron boron are each pulverized to 1 to 500 μm and mixed with water to form a slurry.
S8, secondary dry calcination: put the magnetic mixed ceramsite filler produced in S7 into a drying box, dry at 95 ° C. for 0.5 h, and heat-up rate of 150 ° C./h in a high-temperature calcination furnace under protective gas atmosphere And then calcining at 400 ° C. for 0.5 h and cooling to obtain a biomagnetic serum site filler.

Example 2
The difference from Example 1 is
In the magnetic powder in S2, triiron tetroxide and ferric trioxide are mixed in an equal weight ratio.
The components of the mixture A in S2 are 22 parts of bauxite, 18 parts of sea mud clay, 30 parts of magnetic powder, 3 parts of borax, and 2 parts of titanium dioxide.
The mixture B in S3 is granulated into a 7 mm spherical mixture and the drying time is 1.5 h.

Example 3
The difference from Example 1 is
In the magnetic powder in S2, triiron tetroxide and diiron trioxide are mixed at a weight ratio of 3: 1.
The components of the mixture A in S2 are: sub-clay 25 parts, mudstone 20 parts, magnetic powder 40 parts, borax 5 parts,
3 parts of titanium dioxide.
The mixture B in S3 is granulated into an 8 mm spherical mixture, and the drying time is 2 h.
The drying time in S3 is 2h.
The magnetic microbubble stirring and mixing device used in Examples 1-3 above is
A variable cross-section water molecule destruction chamber 2-1, a passage through which water passes and a magnet provided outside the passage are provided, the cross section of the passage is a variable cross section, and the magnet can magnetize water. , A water inlet pipe 2-2 is provided at one end of the variable cross-section water molecule destruction chamber 2-1.
A drain pipe 2-3 is provided at the other end, and the water inlet pipe 2-2 is connected to a water pump 2-4.
A variable cross-section gas-liquid mixing chamber 2-5 and a gas-liquid mixing chamber are provided therein, and the chamber has a variable cross-section, and the upper portion thereof is connected to the drain pipe 2-3 and the first intake pipe 2-6. A magnetic stirrer 2-7 capable of stirring the gas and liquid in the chamber is provided at the bottom,
A liquid mixing chamber 2-8, one end of which is connected to the variable cross-section gas-liquid mixing chamber 2-5 via a gas-liquid pipe line 2-9, and a discharge pipe 2-10 is provided at the other end. Is connected to an air pump 2-12 via a second intake pipe 2-11 and to a supply pump 2-14 via a supply pipe 2-13, and a turbine mixer is provided inside the liquid mixing chamber 2-8. And
The flow divider 2-15 and the flow divider 2-15 have a tubular structure having dense pores therein, and there are two flow dividers 2-15. The first intake pipe 2-6 and the variable cross-section gas-liquid mixture Provided in the connecting portion between the chamber 2-5 and the connecting portion between the second intake pipe 2-11 and the liquid mixing chamber 2-8,
The first intake pipe 2-6 and the second intake pipe 2-11 are both connected to the air pump 2-12 via the main intake pipe 2-16, and the main intake pipe 2-16 includes an air compressor 2-17. Is provided,
Two flow control valves 2-18 provided on the water inlet pipe 2-2 and the supply pipe 2-13, respectively.
And including.

The rotary spray load device used in Examples 1-3 above is
The main chamber 10-1 and its upper part are arched, the first supply port 10-2 is provided at one end of the main chamber 10-1, and the discharge port 10-3 is provided at the other end.
The spiral supply stirring mechanism 10-4 inside the main chamber 10-1 and the spiral supply stirring mechanism 1
0-4 is disposed horizontally at the bottom of the main chamber 10-1 along the length direction of the main chamber 10-1, and transports the material supplied from the supply port 10-2 to the discharge port 10-3. Used for
A plurality of arcuate tracks 10-5 disposed above the main chamber 10-1 and a micro motor 10-6 disposed on each arcuate rail 10-5.
A rotary spray head 10-7 is provided under the micromotor 10-6, and each rotary spray head 10-7 is driven by the micromotor 10-6 and on a corresponding arcuate track 10-5. The rotary spray head 10-7 can reciprocate back and forth, and is connected to the second supply port via a pipe line.

An apparatus for producing a novel biomagnetic serum site filler for water treatment used in Examples 1-3 above,
An activation tank 1 for activating the magnetic powder;
Magnetic microbubble stirring and mixing device 2 for mixing a serum site, activated magnetic powder, borax, titanium dioxide with water and gas to obtain a mixture B;
A granulator 3 for granulating the mixture B to obtain a spherical mixture;
A first drying chamber 4 for drying the spherical mixture to obtain a serum site substrate;
A first high temperature firing furnace 5 for firing the serum site substrate to obtain a serum site filler substrate;
A first cooling chamber 6 for cooling the serum site filler substrate;
A wash tank 7 for washing the cooled serum site filler substrate;
A second drying chamber 8 for secondary drying of the washed serum site filler substrate;
A magnetizing device 9 for magnetizing the serum site filler substrate after secondary drying;
A rotary spray loading device 10 for loading a magnetized magnetic serum site filler substrate with a surface layer material to obtain a magnetic mixed serum site filler;
A third drying chamber 11 for drying the magnetic mixed serum site filler;
A second high-temperature firing furnace 12 for secondary firing of the magnetic mixed serum site filler after drying;
A second cooling chamber 13 for secondary cooling of the magnetic mixed serum site filler after secondary firing;
including.

Comparison of filming effect:
The biomagnetic serum site filler prepared according to Example 1 and Example 2 of the present invention was compared with a general serum site filler, and the initial inflow ammonia nitrogen concentration was 100 mg /
L, and the filler filling rate in the reactor was 70%. As shown in FIG.
Each reactor is in the initial stage of filming, at the beginning of the influent ammonia nitrogen enrichment stage of / L
The reactors (R2 and R3) filled with the biomagnetic serum site filler for water treatment produced according to the present invention achieved an ammonia nitrogen removal rate of 95% or more on the sixth day of the film application stage. The reactor (R1) filled with a general serum site filler is stable at 90% ammonia nitrogen removal rate after 16 days of operation. Magnetic serum site filler is easy to lay on film.

Comparison of pollutant removal effects:
The biomagnetic serum site filler produced in Example 1 and Example 3 of the present invention was compared with a general serum site filler, and the surface morphology of the biofilm on the surface of the serum site filler in the three reactors 53 days after the experiment. As shown in FIG. 5 (a), the surface biofilm of a general serum site filler is mainly cocci and bacilli, which are agglutinated by extracellular polymers and are larger. Form a bacterial population. FIG.
From b) and (c), the cocci and bacilli on the surface of the magnetic serum site filler aggregate more closely, forming a large amount of bacterial population. The results show that compared to general serum site fillers, magnetic serum site fillers have an effect of promoting biofilm microbial aggregation, increase the specific surface area of the biofilm surface, and improve the removal effect of biofilm against pollutants Showed that

Comparison of the effect of ammonia nitrogen removal efficiency Since there is a weak magnetic field around the magnetic serum site filler after magnetization, and oxygen molecules act as paramagnetic substances, dissolved oxygen in the water follows the magnetic induction line. To increase the utilization of dissolved oxygen in the water. Further, the magnetic serum site filler is concentrated on the surface of the filler by magnetic concentration and adsorption of contaminants in water by actions such as magnetic coupling, magnetic force, Lorentz force and magnetic colloid effect. at the same time,
After the water is magnetized, its osmotic pressure increases, reducing the mass transfer resistance of organic matter and dissolved oxygen in the sewage through the biofilm to the microbial cytoplasm, increasing the diffusion coefficient, and biochemical reactions in the film Strengthen. And the presence of a weak magnetic field also promotes the growth and metabolism of living cells,
It also induces enzyme synthesis and activity to accelerate the enzyme reaction. As shown in FIG. 4, adopting the biomagnetic serum site filler produced by the present invention, ammonia nitrogen removal efficiency,
Compared to general serum site filler of the same shape and specifications, it can be greatly improved.

Experimental example 1
The biomagnetic serum site filler produced in Example 1 is placed in the BAF at a filling rate of 70%, and a constant magnetic field of 2.5 mT magnetic field strength is formed inside the reactor.
A comparative experiment was conducted with a BAF filled with a general serum site filler.
Continue for 3 days and adjust the influent ammonia nitrogen concentration from the first 100 mg / L to 200 mg / L, 4
It gradually increased to 00 mg / L. As shown in FIG. 4, the reactor (R2) filled with the magnetic serum site filler is stable at 95% ammonia nitrogen removal rate on the 12th day, and is filled with a general serum site filler. In (R1), the ammonia nitrogen removal rate was basically stable at 90% after 16 days of operation. As a result, the inflow ammonia nitrogen concentration was 100.
When a mg / L, compared with common fillers, magnetic fillers is easily multiplied film, NH 4 ₊ simultaneously ^- have shown that can effectively improve the removal effect against _N. When the inflow ammonia nitrogen concentration was increased to the 10th day of 200 mg / L, the ammonia nitrogen removal rate of the R1 reactor decreased to 90%. This is because when the biofilm in R1 is in high ammonia nitrogen concentration conditions over a long period of time, the microbial nitrification function is suppressed, thereby
Ammonia nitrogen removal rate decreased and ammonia nitrogen removal rate of R2 reactor was still 9
It was shown to be maintained at 9%. As the influent ammonia nitrogen concentration further increased to 400 mg / L, the ammonia nitrogen removal rate of the R2 reactor was maintained at about 95% and the operation was stable. The R1 reactor is greatly affected by the increase in inflow ammonia nitrogen concentration. When the inflow ammonia nitrogen concentration rises to 400 mg / L, the ammonia nitrogen removal rate is 90%.
% Or less.
After 53 days of operation, the ammonia oxidation rate and specific oxygen consumption rate of the two groups of reactors were examined. As shown in FIG. 6, the ammonia oxidation rate of the biofilm attached to the filler surface in the R2 reactor was determined as R1 reactor. The results show that the magnetic filler can increase the ammonia oxidation rate of the biofilm on the filler surface. As shown in FIG. 7, the specific oxygen consumption rate of the biofilm attached to the filler surface in the R2 reactor is 1.64 times that of the R1 reactor, and the result is the ratio of the biofilm attached to the surface of the magnetic filler. The higher oxygen consumption rate indicates that the present invention is beneficial for increasing the activity of microorganisms.
This experiment further investigated the differences in microbial nitrification and denitrifying enzyme activities and the corresponding functional gene dosage in the two groups of reactors. As shown in FIG. 8, the results of the enzyme activity show that the activity of various nitrification and denitrification enzymes in the biofilm attached to the surface of the 2.5 mT magnetic serum site filler in the R2 reactor is a general serum site filler. Showed higher. As shown in FIG. 9, the gene dosage results show that the 2.5 mT magnetic serum site filler in the R2 reactor has a high promoting effect on the denitrification gene quantity in the biofilm, mainly amoA, nxrA, nirS and mirK. It was shown to promote the increase of gene dosage.

Experimental example 2
The biomagnetic serum site filler produced in Example 2 above is placed in the BAF at a filling rate of 70%, and a constant magnetic field of 5 mT magnetic field strength is formed inside the reactor.
A comparative experiment was conducted with a BAF filled with a general serum site filler.
Continue for 3 days and adjust the influent ammonia nitrogen concentration from the first 100 mg / L to 200 mg / L, 4
It gradually increased to 00 mg / L. As shown in FIG. 4, the reactor (R3) filled with magnetic serum site filler was stable at 95% ammonia nitrogen removal rate on the 12th day, and was filled with a general serum site filler. In (R1), the ammonia nitrogen removal rate was basically stable at 90% after 16 days of operation. As a result, the inflow ammonia nitrogen concentration was 100.
When a mg / L, compared with common fillers, magnetic fillers is easily multiplied film, NH 4 ₊ simultaneously ^- have shown that can effectively improve the removal effect against _N. When the inflow ammonia nitrogen concentration was increased to the 10th day of 200 mg / L, the ammonia nitrogen removal rate of the R1 reactor decreased to 90%. This is because when the biofilm in R1 is in high ammonia nitrogen concentration conditions over a long period of time, the microbial nitrification function is suppressed, thereby
Ammonia nitrogen removal rate decreased and ammonia nitrogen removal rate of R3 reactor was still 9
It was shown to be maintained at 9%. As the influent ammonia nitrogen concentration further increased to 400 mg / L, the ammonia nitrogen removal rate of the R3 reactor was maintained at about 95% and the operation was stable. The R1 reactor is greatly affected by the increase in inflow ammonia nitrogen concentration. When the inflow ammonia nitrogen concentration rises to 400 mg / L, the ammonia nitrogen removal rate is 90%.
% Or less.
After 53 days of operation, the ammonia oxidation rate and specific oxygen consumption rate of the two groups of reactors were examined, and as shown in FIG. 6, the ammonia oxidation rate of the biofilm attached to the filler surface in the R3 reactor was R1 reactor. The result showed that the magnetic filler can increase the ammonia oxidation rate of the biofilm on the filler surface. As shown in FIG. 7, the specific oxygen consumption rate of the biofilm attached to the filler surface in the R3 reactor is 1.34 times that of the R1 reactor, and the result is the ratio of the biofilm attached to the surface of the magnetic filler. The higher oxygen consumption rate indicates that the present invention is beneficial for increasing the activity of microorganisms.
This experiment further investigated the differences in microbial nitrification and denitrifying enzyme activities and the corresponding functional gene dosage in the two groups of reactors. As shown in FIG. 8, the results of enzyme activity show that the activity of various nitrification and denitrification enzymes in biofilm attached to the surface of 5mT magnetic serum site filler in R3 reactor is higher than that of general serum site filler. Showed that. As shown in FIG. 9, the gene dosage results show that the 5 mT magnetic serum site filler in the R3 reactor has a high promoting effect on the denitrification gene quantity in the biofilm, mainly amoA, nxrA, irrS and ni
It was shown to promote an increase in rK gene dosage.

Claims (7)

A method for producing a novel biomagnetic serum site filler for water treatment,
S1, activation of magnetic powder: activating magnetic powder by immersing and activating magnetic powder in glutaraldehyde to obtain activated magnetic powder;
S2, component: serum site, activated magnetic powder, borax, titanium dioxide, 35-45 parts of serum site, 20-40 parts of magnetic powder, 1-5 parts of borax, 1-3 parts of titanium dioxide Ingredient mixing step for mixing at a ratio of
S3, granulation and drying: put the mixture A in S2 into a magnetic microbubble stirring and mixing device,
Mix with water to obtain a mixture B, then put the mixture B in a granulator to produce a spherical mixture with a diameter of 6-8 mm, then put the spherical mixture in a drying box, Granulation and drying steps to dry for 2 h to obtain a serum site substrate;
S4, calcination: The ceramsite base material produced in S3 is 2 in a high-temperature calcination furnace in a protective gas atmosphere.
A heating step of heating to 600 ° C. at a temperature rising rate of 00 ° C./h and baking at 600 ° C. for 8 h to obtain a serum site filler substrate having a certain mechanical strength;
S5, washing and drying: S4 until the washing solution is clear and free of turbidity and discoloration
A washing and drying step of washing the serum site filler substrate obtained by calcination of water with water, then placing the washed serum site in an oven at 105 ° C., drying for 12 hours, and removing molecular water remaining in the substrate by washing When,
S6, magnetization: the serum site filler substrate obtained after the treatment of S5 is magnetized with a magnetizing device,
A magnetization step to finally obtain a magnetic serum site filler substrate;
S7, Load surface layer: The magnetic serum site filler substrate produced in S6 is supplied to the rotary spray load device, and the surface layer material is uniformly loaded on the surface of the magnetic serum site filler substrate by the rotary spray load device, and the magnetic mixed serum Get a site filler, where
The surface layer material is a mixture of charcoal, clay, neodymium iron boron and water, and the weight ratio of charcoal, clay, neodymium iron boron and water is 1: 1: 1: 3,
S8, secondary dry firing: The magnetic mixed serum site filler produced in S7 is placed in a drying box, dried at 95 ° C. for 0.5 to 1 h, and 150 ° C./high temperature in a high-temperature firing furnace under a protective gas atmosphere.
a secondary drying firing step of heating to 400 ° C. at a heating rate of h and firing for 0.5 h at 400 ° C. and obtaining a biomagnetic serum site filler after cooling;
Including
The magnetic microbubble stirring and mixing device is:
Variable cross section water molecule magnetization chamber (2-1), passage through which water passes and the outside of the passage
The passage has a variable cross section, and the magnet can magnetize water.
An inlet pipe (2-2) is provided at one end of the variable cross-section water molecule magnetization chamber (2-1),
A drain pipe (2-3) is provided at the other end, and the water inlet pipe (2-2) is connected to a water pump (2-4).
And
A variable cross-section gas-liquid mixing chamber (2-5) and a gas-liquid mixing chamber are provided inside it.
The chamber has a variable cross section, and the upper part thereof has a drain pipe (2-3) and a first intake pipe (2-
6) is connected to the bottom, and the bottom of the magnetic stirrer is capable of stirring the gas and liquid in the chamber.
A stirrer (2-7) is provided,
The liquid mixing chamber (2-8) and one end of the liquid mixing chamber (2-9) via the gas-liquid conduit (2-9)
It is connected to the gas-liquid mixing chamber (2-5), and a discharge pipe is provided at the other end.
The air pump (2-12) is connected via the trachea (2-11) and the supply pipe (2-13)
) Through the liquid mixing chamber (2-8).
-Bin mixer is provided,
The flow divider (2-15) and the flow divider (2-15) are tubular structures having dense pores inside.
Yes, there are two flow dividers (2-15), first intake pipe (2-6) and variable cross-section gas-liquid mixing chamber
Connected to the chamber (2-5), the second intake pipe (2-11) and the liquid mixing chamber (2-8)
And is provided at each connection part,
The first intake pipe (2-6) and the second intake pipe (2-11) are both main intake pipes (2-16).
) To the air pump (2-12) through the main intake pipe (2-16)
A presser (2-17) is provided,
Two flow control valves (2) provided on the inlet pipe (2-2) and the supply pipe (2-13), respectively.
2-18), and
A method for producing a novel biomagnetic serum site filler for water treatment. The serum site, bauxite, clay, shale, slate, sea mud clay, mudstone, fly ash is produced in one or more of a mixture of coal gangue, characterized in that,
The manufacturing method of the novel biomagnetic serum site filler for water treatment of Claim 1. The magnetic powder is a mixture of one or more of triiron tetroxide, ferric trioxide, iron oxide, and barium ferrite,
The manufacturing method of the novel biomagnetic serum site filler for water treatment of Claim 1. The protective gas used in S4 and S8 is nitrogen or an inert gas,
The manufacturing method of the novel biomagnetic serum site filler for water treatment of Claim 1. The rotary spray load device is:
The main chamber (10-1) and its upper part are arched, and the main chamber (10-1)
-1) is provided with a first supply port (10-2) at one end and a discharge port (10-3) at the other end,
The spiral supply stirring mechanism (10-4) inside the main chamber (10-1) and the spiral supply stirring mechanism (10-4) are arranged along the length of the main chamber (10-1). 10-1) is arranged horizontally at the bottom and is used to convey the material supplied from the supply port (10-2) to the discharge port (10-3),
A plurality of arcuate tracks (10-5) disposed above the main chamber (10-1) and a micromotor (10-6) disposed on each arcuate rail (10-5);
A rotary spray head (10-7) is provided under the micromotor (10-6), and each rotary spray head (10-7) is driven by the micromotor (10-6) and each corresponding one. And the rotary spray head (10-7) is connected to the second supply port via a pipe line. ,
The manufacturing method of the novel biomagnetic serum site filler for water treatment of Claim 1. An apparatus for producing a novel biomagnetic serum site filler for water treatment,
An activation tank (1) for activating the magnetic powder;
Magnetic microbubble stirring and mixing device (2) for mixing the serum site, activated magnetic powder, borax and titanium dioxide with water and gas to obtain a mixture B;
A granulator (3) for granulating the mixture B to obtain a spherical mixture;
A first drying chamber (4) for drying the spherical mixture to obtain a serum site substrate;
First high-temperature firing furnace (5) for obtaining a serum site filler substrate by firing a serum site substrate
)When,
A first cooling chamber (6) for cooling the serum site filler substrate;
A wash tank (7) for washing the cooled serum site filler substrate;
A second drying chamber (8) for secondary drying of the washed serum site filler substrate;
A magnetizing device (9) for magnetizing the serum site filler substrate after secondary drying;
A rotary spray loading device (10) for loading a magnetized magnetic serum site filler substrate with a surface layer material to obtain a magnetic mixed serum site filler;
A third drying chamber (11) for drying the magnetic mixed serum site filler;
Second high-temperature firing furnace for secondary firing of the magnetic mixed serum site filler after drying (12)
When,
Second cooling chamber (13) for secondary cooling of the magnetic mixed serum site filler after secondary firing
When,
Including
The magnetic microbubble stirring and mixing device is:
Variable cross section water molecule magnetization chamber (2-1), passage through which water passes and the outside of the passage
The passage section is a variable section, and the magnet magnetizes water.
A water inlet pipe (2-2) is provided at one end of the variable cross-section water molecule magnetization chamber (2-1).
The drain pipe (2-3) is provided at the other end, and the water inlet pipe (2-2) is connected to the water pump (2-
4)
A variable cross-section gas-liquid mixing chamber (2-5) and a gas-liquid mixing chamber are provided inside it.
The chamber has a variable cross section, and the upper part thereof has a drain pipe (2-3) and a first intake pipe (2-
6) is connected to the bottom, and the bottom of the magnetic stirrer is capable of stirring the gas and liquid in the chamber.
A stirrer (2-7) is provided,
The liquid mixing chamber (2-8) and one end of the liquid mixing chamber (2-9) via the gas-liquid conduit (2-9)
It is connected to the gas-liquid mixing chamber (2-5), and a discharge pipe is provided at the other end.
The air pump (2-12) is connected via the trachea (2-11) and the supply pipe (2-13)
) Through the liquid mixing chamber (2-8).
-Bin mixer is provided,
The flow divider (2-15) and the flow divider (2-15) are tubular structures having dense pores inside.
Yes, there are two flow dividers (2-15), first intake pipe (2-6) and variable cross-section gas-liquid mixing chamber
Connected to the chamber (2-5), the second intake pipe (2-11) and the liquid mixing chamber (2-8)
And is provided at each connection part,
The first intake pipe (2-6) and the second intake pipe (2-11) are both main intake pipes (2-16).
) To the air pump (2-12) through the main intake pipe (2-16)
A presser (2-17) is provided,
Two flow control valves (2) provided on the inlet pipe (2-2) and the supply pipe (2-13), respectively.
2-18), and
An apparatus for producing a novel biomagnetic serum site filler for water treatment. Application of a novel biomagnetic serum site filler for water treatment produced by the method for producing a novel biomagnetic serum site filler for water treatment according to claim 1 in the treatment of high ammonia nitrogen wastewater.