CN115504568A

CN115504568A - Biochemical tank using magnetic core suspension filler and sewage treatment system thereof

Info

Publication number: CN115504568A
Application number: CN202211152844.9A
Authority: CN
Inventors: 丁光俊; 刘永峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-12-23
Anticipated expiration: 2042-09-21
Also published as: CN115504568B

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a biochemical tank using magnetic core suspension filler and a sewage treatment system thereof, wherein the biochemical tank comprises a tank body and an aeration device arranged at the bottom in the tank body, and also comprises magnetic suspension filler arranged in the tank body, a rotating magnetic field module arranged above the tank body and a static magnetic field module arranged below the tank body; the magnetic suspension filler comprises a magnetic core and a biological attachment coated outside the magnetic core; the magnetic field generated by the rotating magnetic field module continuously changes so as to ensure that the magnetic suspension filler is attracted to displace in the sewage of the tank body; the magnetic field generated by the static magnetic field module is always kept unchanged so as to ensure that the magnetic suspension filler is kept attractive to complete the sedimentation process. The invention is used for achieving the purposes of disturbing sewage, promoting biochemical reaction and accelerating sedimentation.

Description

Biochemical tank using magnetic core suspension filler and sewage treatment system thereof

Technical Field

The invention belongs to the technical field of sewage treatment, and particularly relates to a biochemical tank using magnetic core suspended filler and a sewage treatment system thereof.

Background

In recent years, along with the development of society, people pay more and more attention to environmental pollution, so that the sewage treatment industry is rapidly developed. The sewage treatment process generally uses a biochemical reaction tank, and the biochemical reaction tank is mainly used for removing organic matters through the processes of coagulation, adsorption, oxidative decomposition, precipitation and the like by continuously culturing microbial groups in the presence of dissolved oxygen so as to realize the sewage treatment process.

However, in order to promote the liquid flow and promote the biochemical reaction, mechanical stirring equipment with strong shearing force such as a pump and a stirrer is required in the existing biochemical reaction tank, and the mechanical stirring equipment is easy to damage flocculent sludge and broken fillers, and is also easy to damage. Meanwhile, the existing biochemical reaction tank adopts natural sedimentation, the sedimentation speed is slow, and the sewage treatment efficiency is low.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a biochemical pool using magnetic core suspended fillers, which achieves the purposes of disturbing sewage and promoting biochemical reaction on one hand and accelerating a sedimentation process and improving the sewage treatment efficiency on the other hand through the interaction of a rotating magnetic field at the top and a static magnetic field at the bottom of the biochemical pool and the magnetic core suspended fillers.

In order to achieve the purpose, the technical scheme of the invention is as follows: a biochemical pool using magnetic core suspension packing comprises a pool body and an aeration device arranged at the bottom in the pool body, and also comprises magnetic suspension packing arranged in the pool body, a rotating magnetic field module arranged above the pool body and a static magnetic field module arranged below the pool body; the magnetic suspension filler comprises a magnetic core and a biological attachment coated outside the magnetic core; the magnetic field generated by the rotating magnetic field module continuously changes so as to ensure that the magnetic suspension filler is attracted to displace in the sewage of the tank body; the magnetic field generated by the static magnetic field module is always kept unchanged so as to ensure that the magnetic suspension filler is kept attractive to complete the sedimentation process.

Preferably, the magnetic suspension filler adopts a comet structure.

Preferably, the bioadhesive body comprises long fibrils and a plastic protective film shell for fixing the long fibrils on the magnetic core.

Preferably, the plastic protective film shell is made of polyethylene.

Preferably, a horizontal porous partition plate is arranged in the tank body and used for isolating the magnetic suspension filler on the upper layer from the settled sludge on the lower layer.

Preferably, a reaction treatment area and a water outlet area are isolated from the tank body through a vertical sealing partition plate, and the reaction treatment area is communicated with the water outlet area at the bottom of the sealing partition plate.

Based on the same invention concept, the invention also provides a sewage treatment system, which comprises a pre-filtering module, the biochemical tank using the magnetic core suspension filler and a sludge concentration module; the sewage to be treated enters the biochemical tank after being filtered by the pre-filtering module, and the settled sludge after being biochemically treated by the biochemical tank is extruded and concentrated by the sludge concentration module and then is periodically discharged.

Preferably, the pre-filtering module comprises a plurality of filtering bins arranged up and down and a slag bin cloth bag arranged below the filtering bins.

Preferably, the sludge concentration module comprises a U-shaped groove arranged at the bottom in the biochemical pool and a screw conveyer arranged in the U-shaped groove.

Preferably, the treatment system further comprises a fan module for drying the filter residue in the slag bin cloth bag and supplying air to the aeration device.

The technical scheme adopted by the invention has the beneficial effects that:

according to the invention, the rotating magnetic field module is arranged above the tank body, and the rotating magnetic field module drives the magnetic suspension filler in the tank body to move after being opened, so that the sewage is indirectly driven to generate vortex flow, the biochemical reaction is accelerated, and the reaction time is shortened; the static magnetic field module is arranged below the tank body, so that the magnetic suspension filler which is subjected to biochemical treatment has continuous attraction, the sedimentation process of the magnetic suspension filler is accelerated, and the magnetic suspension filler is dragged to drive flocculent sludge to settle to the bottom of the tank body.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a biochemical pool using a magnetic core suspended filler;

FIG. 2 is a schematic diagram of an exemplary magnetic suspension packing for a biochemical basin using magnetic core suspension packing;

FIG. 3 is a schematic view of an embodiment of a wastewater treatment system.

In the figure 1-3, 1-a tank body, 11-a water inlet pipe, 12-a porous partition plate, 13-a sealing partition plate, 14-a reaction treatment area, 15-a water outlet area, 16-a water outlet hole, 17-an aeration device, 2-a rotating magnetic field module, 3-a static magnetic field module, 4-a magnetic suspension filler, 41-a magnetic core, 42-a long cellosilk, 43-a plastic protective membrane shell, 5-a pre-filtering module, 6-a fan module and 7-a sludge concentration module.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments, and do not limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The specific embodiment is as follows:

example 1, as shown in fig. 1 to 3, a biochemical tank using magnetic core suspended packing includes a tank body 1 and an aeration apparatus 17. The biochemical pool also comprises a magnetic suspension filler 4, a rotating magnetic field module 2 and a static magnetic field module 3.

A water inlet pipe 11 is arranged on the left side of the tank body 1 near the upper end, and a water outlet hole 16 is arranged on the right side of the tank body 1 near the upper end and used for water inlet and outlet. Still be provided with at the top of cell body 1 and overhaul the manhole (not shown in the figure), conveniently observe and overhaul cell body 1 inside.

The aeration device 17 is arranged at the bottom of the tank body 1 and is used for introducing air into the tank body 1 to supply oxygen.

The magnetic suspension filler 4 includes a magnetic core 41 and a biological attachment. The biological attachment is coated outside the magnetic core 41 and used for attaching sludge containing active organisms. The magnetic suspension filler 4 is placed in the tank body 1 and suspended on the water surface under the condition of not attaching sludge, and the density of the attached sludge is basically the same as that of sewage and the attached sludge is suspended in water.

The magnetic field generated by the rotating magnetic field module 2 is continuously changed, so that the attraction direction of the rotating magnetic field module 2 to the magnetic suspension filler 4 is also changed, the magnetic suspension filler 2 can be driven to move in the sewage, the sewage is indirectly driven to generate vortex flow, the biochemical reaction is accelerated, the reaction time is shortened, and the sewage treatment efficiency is improved. In this embodiment, the rotating magnetic field module 2 may be a rotating magnetic field assembly that drives a rotor to rotate in a magnetic stirrer, for example.

It should be noted that the rotating magnetic field is a magnetic field that rotates in space at a constant rotation speed, and has a part of a circular rotating magnetic field and an elliptic rotating magnetic field, and is a rotating magnetic field in which the end of an arrow of a magnetic induction vector moves along a circumference, and the moving track of the end of the magnetic induction vector is an elliptic rotating magnetic field, which is a basic condition for mutual conversion between electric energy and rotating mechanical energy, and a magnetic field that rotates in space around a fixed axis at a constant speed.

The magnetic field generated by the static magnetic field module 3 is always kept unchanged, and the magnetic attraction force with the unchanged direction is kept on the magnetic suspension filler 4, so that the sedimentation of the magnetic suspension filler is accelerated, and then the flocculent sludge is driven to be sedimentated to the bottom of the tank body 1, and the sedimentation time is greatly shortened. Tests show that the overall settling time can be shortened to more than 50%.

In the biochemical tank using the magnetic core suspended filler of the present embodiment, when in use, the magnetic suspended filler 4 to which the sludge is attached is suspended in the sewage, and the microorganisms in the sludge react with the organic matter in the sewage to decompose the organic matter, thereby purifying the water. Sewage enters the tank body 1 from the water inlet pipe 11 and is purified by activated sludge in the tank body 1, and the aeration device 17 supplements oxygen in the sewage to provide conditions for biochemical reaction.

When sewage treatment begins, the rotating magnetic field module 2 is started, the rotating magnetic field module 2 drives the magnetic suspension filler 4 in the sewage to move, the sewage is indirectly driven to generate vortex flow, the contact between the sewage and sludge is increased, biochemical reaction is accelerated, the reaction time is shortened, and the sewage treatment efficiency is improved. Simultaneously, compare the mechanical stirring equipment of strong shearing such as pump, agitator, destroy flocculent mud easily, beat bad filler, and equipment also damages easily, adopt magnetic field drive filler to remove the activity that the disturbance sewage can effectual protection mud, and can utilize magnetism to retrieve, cyclic utilization filler, practice thrift the cost.

After biochemical reaction contact, the rotating magnetic field module 2 is closed, the static magnetic field module 3 is opened, a one-way magnetic field which is not changed all the time is generated, the magnetic suspension filler 4 is continuously attracted, the sedimentation of the magnetic suspension filler 4 is accelerated, the magnetic suspension filler 4 is dragged to drive the bottom of the flocculent sludge sedimentation value tank body 1, and the sedimentation time is greatly reduced.

Further, the magnetic levitation filler 4 adopts a comet structure, and specifically includes long fiber filaments 42 and a plastic protective film shell 43. The plastic protective film case 43 covers the outside of the magnetic core 41, and fixes the filament yarn 42 to the outside of the magnetic core 41. The plastic protective film case 43 is coated to permanently fix the filament 42 and the magnetic core 41, and to prevent the magnetic core 41 from corroding, thereby prolonging the service life.

The comet type packing structure with the long cellosilk 42 has large specific surface area, greatly increases the sludge concentration in the reaction tank, and reduces the designed tank capacity of the biochemical tank.

Furthermore, the plastic protective film shell 43 is made of polyethylene, has good chemical stability, and can resist corrosion of most of acid and alkali.

Furthermore, a horizontal porous partition plate 12 is arranged in the tank body 1 near the bottom. The porous partition plate 12 separates an upper space and a lower space, the magnetic suspension filler 4 is positioned above the porous partition plate 12, and the settled sludge is positioned below the porous partition plate 12, so that the magnetic suspension filler 4 can be effectively prevented from entering the lower part of the porous partition plate 12.

In this embodiment, the aeration device 17 is located above the porous partition 12 to provide oxygen for the water body, thereby facilitating the sewage purification.

Further, a sealing partition plate 13 is vertically arranged in the tank body 1 close to the right side, two spaces are isolated from the tank body 1, namely a reaction treatment area 14 on the left side and a water outlet area 15 on the right side, and the bottom of the sealing partition plate 13 is communicated with the reaction treatment area 14 and the water outlet area 15, so that the short-flow phenomenon is effectively prevented. The water outlet hole 16 is arranged in the water outlet area 15.

In the case of the example 2, the following examples are given,

based on the same inventive concept as the embodiment of the biochemical tank using the magnetic core suspended filler, the invention also provides a sewage treatment system, which comprises a pre-filtering module 5, a biochemical tank and a sludge concentration module 7, wherein the biochemical tank adopts the biochemical tank using the magnetic core suspended filler in any one of the embodiments. The pre-filtering module 5 filters sewage in advance and then enters the biochemical tank, and a sludge concentrating module 7 extrudes and concentrates settled sludge after biochemical treatment, and discharges redundant sludge at regular intervals, so that the treatment burden of the biochemical tank is relieved, and the sludge sedimentation phenomenon is caused.

Further, the pre-filtering module 5 comprises a plurality of drawer-type filtering bins and a slag bin cloth bag. A plurality of bins of straining are arranged from top to bottom in proper order, and strain empty gradually reducing from top to bottom of bin. The sewage to be treated is discharged into the uppermost filter bin, so that the sewage to be treated is filtered for multiple times through a plurality of filter bins, internal solid impurities can be better removed, and the filtered sewage enters the pool body 1 of the biochemical pool from the water inlet pipe. The slag bin cloth bag is arranged below the filtering bin, solid impurities in the filtering bin are poured into the slag bin cloth bag to be collected after being accumulated to a certain degree, and the solid impurities in the slag bin cloth bag are regularly treated.

Further, the sludge concentration module 7 comprises a U-shaped groove and a screw conveyer. The U-shaped groove is arranged at the bottom of the tank body 1 and is positioned below the porous partition plate 12. The spiral conveyer is arranged in the U-shaped groove and is driven by a motor. Along with the promotion to sewage treatment volume, the sludge volume increases gradually, has been greater than biochemical reaction's demand, and partial sludge deposit is in the bottom of cell body 1 and gets into U type inslot, and the motor drives many gear reduction unit, and the auger delivery axle slowly rotates, concludes that mud pushes away to the other end from one end, and mud is constantly by the extrusion concentration, and concentrated sludge rises and stores in mud storage storehouse to by periodic discharge.

Further, the processing system also comprises a fan module 6. The fan module 6 comprises a fan, a main pipe connected with the fan, a main pipe valve for controlling the main pipe, a branch pipe connected with the fan, a branch pipe valve for controlling the branch pipe and a damping device. The fan module 6 is integrally placed at the top of the pool body 1, so that negative pressure water absorption generated by a pipeline when the fan is suddenly stopped is avoided, and the fan is damaged by the backwardly flowing water. The fan is installed on the base of the module box of the fan module 6, and the rubber shock absorber is installed on the base, so that the vibration transmission of the fan is fully reduced, and the noise of the fan is reduced.

Wherein, the main pipe is used for connecting an aeration device 17 in the tank body 1 and supplying air to the aeration device 17; the branch pipe air outlet aims at the slag bin cloth bag, and the solid impurities in the slag bin cloth bag are dried, so that the water content and the weight of the solid impurities are reduced, the peculiar smell is reduced, and the transportation and the treatment are convenient.

In this embodiment, the main pipe connected with the aeration device 17 is an annular perforated pipe, the annular perforated pipe is provided with valves in two directions, and the valves can be switched to supply air so as to empty the pipeline and prevent the aeration pipeline from being blocked due to mud suction caused by sudden stop.

In this embodiment, the underwater part of the main pipe is sampled by a plastic pipeline, and the water part is made of carbon steel anti-corrosion material so as to prolong the service life.

In this embodiment, the fan module 6 further comprises a roller shutter filter. The rolling screen filter can adopt a manual rolling screen filter or an electric rolling screen filter. An electric rolling screen filter is selected in a region with large dust, and a manual rolling screen filter is adopted in a place with less dust.

In other embodiments, the processing system further comprises an electrical cabinet module. The electric cabinet module comprises a power generation module and a power distribution module and is positioned at the right end of the cell body of the biochemical cell; the power generation module comprises a photovoltaic panel, a storage battery pack, an inverter and the like; the power distribution module comprises an ammeter, a storage battery pack, an inverter, a PLC circuit and the like. Other structures are not described in detail herein.

In other embodiments, the processing system further comprises an analytical instrument module. The analytical instrument module comprises analytical instruments such as a sampling pump, a PH meter, an ammonia nitrogen detector, a COD detector and the like. The analysis module can analyze the quality of water of intaking, going out water, and the interval is gathered and is intake or go out water sample. The data of the analytical instrument can be transmitted to the PLC system and remotely transmitted to the intelligent water service platform management center.

The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the technical solution of the invention or to apply the concept and technical solution of the invention directly to other occasions without modification.

Claims

1. A biochemical pool using magnetic core suspension filler comprises a pool body and an aeration device arranged at the inner bottom of the pool body, and is characterized by also comprising magnetic suspension filler arranged in the pool body, a rotating magnetic field module arranged above the pool body and a static magnetic field module arranged below the pool body; the magnetic suspension filler comprises a magnetic core and a biological attachment coated outside the magnetic core; the magnetic field generated by the rotating magnetic field module continuously changes to ensure that the magnetic suspension filler is attracted to displace in the sewage of the tank body; the magnetic field generated by the static magnetic field module is always kept unchanged so as to ensure that the magnetic suspension filler is kept attractive to complete the sedimentation process.

2. The biochemical pool according to claim 1, wherein the magnetic suspending filler is comet-type.

3. The biochemical pool according to claim 2, wherein the bio-attachment includes long fiber filaments and a plastic protective film shell for fixing the long fiber filaments to the magnetic core.

4. The biochemical pool according to claim 3, wherein the plastic protective film casing is made of polyethylene.

5. The biochemical pond according to claim 4, wherein a horizontal porous partition is provided in the pond body for separating the magnetic suspending filler at the upper layer from the settled sludge at the lower layer.

6. The biochemical pool using magnetic core suspended filler according to claim 5, wherein the reaction treatment area and the water outlet area are separated by a vertical sealing partition plate in the pool body, and the reaction treatment area and the water outlet area are communicated at the bottom of the sealing partition plate.

7. A wastewater treatment system, comprising a pre-filtration module, a biochemical tank according to any one of claims 1-6, and a sludge concentration module; the sewage to be treated enters the biochemical tank after being filtered by the pre-filtering module, and the settled sludge after being biochemically treated by the biochemical tank is extruded and concentrated by the sludge concentration module and then is periodically discharged.

8. The sewage treatment system of claim 7, wherein the pre-filtering module comprises a plurality of filtering bins arranged up and down and a slag bin cloth bag arranged below the filtering bins.

9. The wastewater treatment system according to claim 8, wherein the sludge concentration module comprises a U-shaped groove arranged at the bottom of the biochemical tank and a screw conveyor arranged in the U-shaped groove.

10. The wastewater treatment system of claim 9, further comprising a blower module for drying the filter residue in the residue chamber sack and for supplying air to the aeration device.