Anaerobic ammonium oxidation denitrification device with magnetic suspended biological carrier

Abstract

The present invention provides an anaerobic ammonium oxidation denitrification device using magnetic suspended bio-carriers. The device comprises a water inlet, a denitrification reaction device body, a superconducting circulating flow-pushing cylinder, wing plates, a superconducting magnetic fluid propeller, a magnetic suspended bio-carrier, a magnetic suspended bio-carrier interception system, a water outlet, an activity detector for detached biofilms, and a PLC automatic control system. The reciprocating flow-pushing cylinder uniformly circulates the flow internally, allowing the biofilm attached to the magnetic suspended bio-carriers to fully contact the water, thereby achieving the purpose of denitrification. This avoids the problem in the prior art of damaging the magnetic suspended bio-carriers, causing them to pass through the barrier net, which can at best affect subsequent treatment processes and at worst clog pipelines, paralyzing the sewage treatment plant. Furthermore, both the flow-pushing cylinder and the agitator have the problem of dead spots.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, in particular to an anaerobic ammonia oxidation denitrification device using a magnetic suspended biological carrier. Background Art

[0002] Traditional sewage treatment processes suffer from drawbacks such as high levels of excess sludge and large footprints for decontamination processes. The activated sludge process, as a mature sewage treatment process, has been widely used in major sewage treatment plants. However, it suffers from drawbacks such as low treatment efficiency, low shock load resistance, and unstable effluent quality.

[0003] Magnetic suspended bio-carriers are an energy-efficient and highly efficient water treatment process, combining the benefits of both activated sludge and biological treatment methods. They can be used in both anaerobic and aerobic environments. Because the filler is suspended in water, the system only requires the kinetic energy of the water to operate. Magnetic suspended bio-carriers offer advantages such as high volumetric loading, minimal footprint, strong shock resistance, stable performance, reliable operation, and easy recycling.

[0004] However, the current process often results in the situation where the volume of the biological pool is not fully utilized and there are dead corners. Usually when used in an aerobic environment, kinetic energy is applied to the water by aeration, and the magnetic suspended biological carrier can fully react with the water without damage. However, when used in an anaerobic environment, mechanical force is needed to provide kinetic energy. Whether it is an ordinary mixer, a flow pusher or a hyperbolic mixer, it is necessary to produce shear motion with the water, so the destruction of the magnetic suspended biological carrier is inevitable. Once the magnetic suspended biological carrier is destroyed, it will pass through the barrier net, which will affect the subsequent treatment process at the least, and block the pipeline at the worst, paralyzing the sewage treatment plant. In addition, both the flow pusher and the mixer have the problem of dead corners, which wastes a certain amount of space.

[0005] The published patent 2021100989428 discloses an integrated device and method for anaerobic ammonia oxidation denitrification treatment of ammonia-containing wastewater. Through the above-mentioned setting method, the three treatment functions of nitrification reaction, precipitation separation, and anaerobic ammonia oxidation denitrification are integrated into one design. There is no need to limit the ratio of ammonia nitrogen to nitrite nitrogen in the effluent of the nitrification unit, thereby achieving effective removal of ammonia nitrogen and total nitrogen and improving denitrification efficiency. However, there is still the problem of destruction of magnetic suspended biological carriers. The published patent 2023109490819 also discloses a denitrification system based on anaerobic ammonia oxidation technology. Although the denitrification process has been realized, it still cannot solve the problem of clogged pipes and paralyzed sewage treatment plants. In addition, both the flow pusher and the agitator have the problem of dead corners. Summary of the Invention

[0006] The present invention aims to provide an anaerobic ammonium oxidation denitrification device using magnetically suspended bio-carriers. This device, which evenly circulates the biofilm attached to the magnetically suspended bio-carriers through a reciprocating flow-pushing cylinder, ensures full contact between the biofilm and the water, thereby achieving denitrification. This device avoids the problem, as is common in the prior art, of the magnetically suspended bio-carriers being damaged and passing through the barrier net, which can at best affect subsequent treatment processes or at worst clog pipelines and paralyze sewage treatment plants. Furthermore, both flow-pushing devices and agitators have the problem of dead spots.

[0007] The present invention provides an anaerobic ammonia oxidation denitrification device with a magnetic suspended bio-carrier. The reaction device comprises a water inlet, a denitrification reaction device body, a superconducting circulation flow-pushing cylinder, a wing plate, a superconducting magnetic fluid propeller, a magnetic suspended bio-carrier, a magnetic suspended bio-carrier interception system, a water outlet, an activity detector for shedding biofilm, and a PLC automatic control system. The outer edge of the superconducting circulation flow-pushing cylinder separates the denitrification reaction device body from the wing plate. The superconducting magnetic fluid propeller is arranged outside the superconducting circulation flow-pushing cylinder. The magnetic suspended bio-carrier is arranged in the denitrification reaction device body, and the magnetic suspended bio-carrier interception system is connected to the water inlet and the water outlet. The biofilm activity detector feeds back biofilm activity detection data on the sewage suspended carrier to the PLC automatic control system, and the PLC automatic control system performs frequency conversion control on the water body of the superconducting magnetic fluid propeller and the flow-pushing speed of the magnetic suspended bio-carrier. The flow-pushing force of the water body and the magnetic suspended bio-carrier is generated by the magnetic force lines in the superconducting magnetic fluid propeller to propel the water body and the magnetic suspended bio-carrier forward.

[0008] Further improvements are: the interior of the superconducting circulation flow-pushing cylinder is a through hole, the upper part of the cylinder is 100~300cm above the water surface, the lower part of the cylinder is 100~300cm above the pool bottom, and the shape of the cylinder is regular or irregular, preferably a circular cylinder.

[0009] A further improvement is that the denitrification reaction device body also includes suspended activated sludge, biofilm-like anaerobic ammonium oxidizing bacteria, and short-range denitrifying anaerobic ammonium oxidizing bacteria.

[0010] Further improvements are: the magnetic suspended biological carrier is a magnetic suspended biological carrier added with a charged conductor, and the density after the biofilm is formed is close to the density of water, and it is in a suspended state; the magnetic suspended biological carrier is made of a loaded magnetic material of MBBR filler, APG filler, polyurethane polymer composite hydrophilic material, and sponge filler; the magnetic material includes ferroferric oxide and cobalt ferrite in a ratio of 1:1 to 3:1;.

[0011] A further improvement is that the force acting on the water flow velocity within the superconducting circulation flow cylinder is preferably directed downward. The superconducting circulation flow cylinder may also be equipped with a propeller. The superconducting magnetohydrodynamic propeller, through the interaction of magnetic field and electric current, generates an electromagnetic force on the conductive wastewater through the magnetic field within the cylinder, thereby propelling the wastewater downward.

[0012] Further improvements are: the superconducting magnetofluid propeller is a superconducting magnetofluid propeller or a propeller propeller; the superconducting magnetofluid propeller generates electromagnetic force on the conductive sewage through the magnetic field in the cylinder, thereby promoting the downward movement of the sewage.

[0013] The beneficial effects of the present invention are as follows: the flow-pushing cylinder is designed for superconducting magnetic fluid, and a superconducting module is installed on the outside of the reciprocating flow-pushing cylinder. Since sewage has conductivity and magnetic suspended biological carriers, the interaction force between the current and the magnetic field in the sewage is used to make the sewage move. The reciprocating flow-pushing cylinder is located at the center of the denitrification reaction device body, the upper part of the reciprocating flow-pushing cylinder is 10 to 200 cm above the water surface, and the lower part of the reciprocating flow-pushing cylinder is 50 to 200 cm above the pool bottom. The inlet and outlet of the denitrification reaction device body are both composed of orifice plates that are smaller than the magnetic suspended biological carriers. The magnetic suspended biological carriers and sewage of the present invention are uniformly circulated internally through the reciprocating flow-pushing cylinder, so that the biofilm attached to the magnetic suspended biological carriers is in full contact with the water, thereby achieving the purpose of denitrification. The magnetic field of the superconducting magnetic fluid propeller of this patent will have a promoting effect on the cell structure of microorganisms attached to the magnetic suspended biological carrier and the activity of key enzymes in the metabolic process, and accelerate the transfer of electrons in the anaerobic ammonium oxidation reaction process through magnetoelectric conversion. In addition, the addition of ferroferric oxide and cobalt ferrite in the magnetic suspended biological carrier of the present invention can greatly improve the denitrification performance of anaerobic ammonium oxidation, and contribute to the rapid formation of biofilm in the reactor and reduce the startup cycle, thereby greatly improving the denitrification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 It is a top view of the structure of the present invention.

[0016] Among them: 1- denitrification reaction device body, 2- wing side plate, 3- flow pattern schematic direction, 4- magnetic suspension biological carrier interception system, 5- water outlet, 6- superconducting circulation flow cylinder, 7- superconducting magnetohydrodynamic propeller, 8- magnetic suspension biological carrier, 9- water inlet. Implementation Method

[0017] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the examples. The examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0018] like Figure 1 As shown, this embodiment provides an anaerobic ammonia oxidation denitrification device with magnetic suspended bio-carriers. The superconducting circulating flow-pushing cylinder 6 is arranged inside the denitrification reaction device body 1. The superconducting circulating flow-pushing cylinder 6 is separated from the denitrification reaction device body 1 by wing plates 2 arranged on the upper and lower sides; the superconducting magnetic fluid propeller 7 is arranged outside the superconducting circulating flow-pushing cylinder 6; the magnetic suspended bio-carrier 8 is arranged in the denitrification reaction device body, the magnetic suspended bio-carrier interception system 4 is arranged at the water inlet 9 and the water outlet 5, and the activity detector of the detached biofilm is arranged outside the water outlet 5 and connected to the water outlet 5 to detect the biofilm activity of the liquid flowing out of the water outlet 5. The PLC automatic control system is connected to the activity detector of the detached biofilm via a signal line, and the PLC automatic control system performs variable frequency control on the water body and the flow-pushing speed of the magnetic suspended bio-carrier 8 of the superconducting magnetic fluid propeller 7. The flow-pushing force of the water body and the magnetic suspended bio-carrier 8 is generated by the magnetic lines of force in the superconducting magnetic fluid propeller 7 to propel them forward.

[0019] The interior of the superconducting circulation flow-pushing cylinder 6 is a through hole, the upper part of the cylinder is 250 cm above the water surface, the lower part of the cylinder is 200 cm above the pool bottom, and the cylinder is in the shape of a circular cylinder.

[0020] The denitrification reaction device body 1 is provided with suspended activated sludge, biofilm-like anaerobic ammonium oxidizing bacteria and short-range denitrifying anaerobic ammonium oxidizing bacteria.

[0021] The magnetic suspension biological carrier 8 is a magnetic suspension biological carrier added with a charged conductor. After forming a biofilm, its density is close to that of water and it is in a suspended state.

[0022] The magnetic suspension biological carrier 8 is made of MBBR filler, APG filler, polyurethane polymer composite hydrophilic material, and sponge filler loaded magnetic material.

[0023] The magnetic material includes ferroferric oxide and cobalt ferrite, and the ferroferric oxide and cobalt ferrite are composed in a ratio of 1:1 to 3:1.

[0024] The direction of the force of the water flow velocity in the superconducting circulation flow-pushing cylinder 6 is downward.

[0025] The superconducting magnetofluid propeller 7 is arranged on the superconducting circulation flow-pushing cylinder 6, and auxiliary propulsion force is applied by a propeller propeller. The superconducting magnetofluid propeller 7 is a superconducting magnetofluid propeller or a propeller propeller. Under the interaction of magnetic field and electric current, the superconducting magnetofluid propeller can generate electromagnetic force on the conductive sewage through the magnetic field in the cylinder, thereby pushing the sewage to flow downward.

[0026] Magnetic suspended biological carriers 8 are added to the denitrification reaction device body 1. The superconducting circulation flow-pushing cylinder 6 is designed for superconducting magnetic fluid, and a superconducting module is installed on the outside of the superconducting circulation flow-pushing cylinder 66. Since the sewage has conductivity and magnetic suspended biological carriers, the interaction force between the current and the magnetic field in the sewage is used to make the sewage move. The superconducting circulation flow-pushing cylinder 6 is located in the center of the denitrification reaction device body 1. The water inlet 9 and the water outlet 5 of the denitrification reaction device body 1 are both composed of orifice plates smaller than the magnetic suspended biological carriers. The magnetic suspended biological carriers 8 and sewage are evenly circulated inside through the superconducting circulation flow-pushing cylinder 6, so that the biofilm attached to the magnetic suspended biological carriers 8 is in full contact with the water, thereby achieving the purpose of denitrification, while reducing the occurrence of damage to the magnetic suspended biological carriers. At the same time, the superconducting circulation method is used to avoid the generation of dead corners that lead to pipe blockage.

Claims

1. An anaerobic ammonium oxidation denitrification device with magnetic suspended biological carriers, characterized by: The denitrification device comprises a water inlet, a denitrification reaction device body, a superconducting circulation flow-pushing cylinder, a wing plate, a superconducting magnetohydrodynamic propeller, a magnetic suspended biological carrier, a magnetic suspended biological carrier interception system, a water outlet, an activity detector for shedding biofilm, and a PLC automatic control system. The water inlet and the water outlet are respectively arranged on both sides of the denitrification reaction device body, the superconducting circulation flow-pushing cylinder is arranged inside the denitrification reaction device body, the superconducting circulation flow-pushing cylinder separates the denitrification reaction device body by wing plates arranged on the upper and lower sides, the superconducting magnetohydrodynamic propeller is arranged outside the superconducting circulation flow-pushing cylinder, the magnetic suspended biological carrier is located in the denitrification reaction device body, the magnetic suspended biological carrier interception system is arranged at the water inlet and the water outlet, the activity detector for shedding biofilm is arranged outside the water outlet and connected to the water outlet, and biofilm activity detection is performed on the liquid flowing out of the water outlet. The PLC automatic control system is connected to the activity detector for shedding biofilm via a signal line, and the PLC automatic control system performs frequency conversion control on the water body of the superconducting magnetohydrodynamic propeller and the flow-pushing speed of the magnetic suspended biological carrier.

2. The anaerobic ammonium oxidation denitrification device using a magnetically suspended bio-carrier according to claim 1, characterized in that: The superconducting circulation flow-pushing cylinder is provided with a through hole, the upper part of the cylinder is 100-300 cm above the water surface, and the lower part of the cylinder is 100-300 cm above the pool bottom.

3. The anaerobic ammonium oxidation denitrification device using a magnetically suspended bio-carrier according to claim 1, characterized in that: The denitrification reaction device body is provided with suspended activated sludge, biofilm-shaped anaerobic ammonium oxidizing bacteria and short-range denitrification anaerobic ammonium oxidizing bacteria.

4. The anaerobic ammonium oxidation denitrification device using a magnetically suspended bio-carrier according to claim 1, characterized in that: The magnetic suspension biological carrier is a magnetic suspension biological carrier added with a charged conductor. After forming a biofilm, the density is close to the density of water and the biofilm is in a suspended state.

5. The anaerobic ammonium oxidation denitrification device using a magnetically suspended bio-carrier according to claim 4, characterized in that: The magnetic suspension bio-carrier is made of MBBR filler, APG filler, polyurethane polymer composite hydrophilic material, and sponge filler loaded magnetic material.

6. The anaerobic ammonium oxidation denitrification device using a magnetically suspended bio-carrier according to claim 5, characterized in that: The magnetic material includes ferroferric oxide and cobalt ferrite, and the ferroferric oxide and cobalt ferrite are composed in a ratio of 1:1 to 3:

1.

7. The anaerobic ammonium oxidation denitrification device using a magnetically suspended bio-carrier according to claim 1 or 2, characterized in that: The force acting on the water flow velocity in the superconducting circulation flow-pushing cylinder is directed downward.

8. The anaerobic ammonium oxidation denitrification device using a magnetically suspended bio-carrier according to claim 1, characterized in that: The superconducting magnetohydrodynamic propeller is arranged on the superconducting circulation propeller cylinder and applies auxiliary propulsion force through the propeller propeller. The magnetic field strength of the superconducting magnetohydrodynamic propeller is 50-300 Gauss; the speed of the propeller propeller is 50-70 rpm; Under the interaction of magnetic field and electric current, the superconducting magnetohydrodynamic propeller can generate electromagnetic force on the conductive sewage and magnetic suspended biological carriers through the magnetic field in the cylinder, thereby promoting the sewage and magnetic suspended biological carriers to move in the channel and fluidize back and forth in the superconducting circulation propulsion cylinder; at the same time, the magnetic field will promote the cell structure of microorganisms attached to the magnetic suspended biological carriers and the activity of key enzymes in the metabolic process, and accelerate the transfer of electrons in the anaerobic ammonia oxidation reaction process through magnetoelectric conversion, thereby greatly improving the denitrification effect.

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