CN212770063U - Novel sewage treatment device adopting rotary biomembrane method - Google Patents

Abstract

The utility model discloses a novel rotation type biomembrane process sewage treatment device relates to sewage treatment technical field, including reaction tank and biological rotating disk, still include: the immersion depth adjusting unit is used for adjusting the immersion depth of the biological rotating disc immersed in the reaction tank; the rotating speed adjusting unit is used for adjusting the rotating speed of the biological rotating disc; the oxygen supply regulating unit comprises an oxygen supply device arranged in the reaction tank and/or outside the reaction tank and is used for regulating the oxygen supply rate of the water/underwater part of the biological rotating disc; the pollutant concentration detection unit is used for detecting the concentration of the sewage pollutant in the reaction tank and outputting a pollutant concentration detection signal; the control unit receives the pollutant concentration detection signal and outputs a control signal to control the actions of the regulating units, and the problems that the degradation reaction gradient of pollutants on water and under water of the traditional biological rotating disc is too small and the denitrification and dephosphorization reaction can not effectively occur in the same rotating disc area when the traditional biological rotating disc rotates can be flexibly solved by adjusting the immersion depth, the rotation speed and the local dissolved oxygen.

Description

Novel sewage treatment device adopting rotary biomembrane method

Technical Field

The utility model relates to a sewage treatment technical field, more specifically say, it relates to a novel rotation type biomembrane process sewage treatment device.

Background

The biomembrane process is a kind of aerobic biological treatment technology for waste water parallel to the activated sludge process, is a fixed membrane process, is the artificial and reinforced process of self-cleaning of sewage and soil, and mainly removes the soluble and colloidal organic pollutants in the waste water.

The traditional biomembrane method such as the biological contact oxidation method and the biological filter method all need related reflux design, and the anaerobic, anoxic and aerobic integrated circulation flow is long, so that the sludge activity is not high. In addition, competitive absorption of carbon source is easy to occur during denitrification and dephosphorization, so that better synchronous denitrification and dephosphorization effect is difficult to realize.

The biological rotating disc is used as a sewage treatment technology by a biomembrane method, does not need sludge backflow, and has wide application. The structure of the biological rotating disk device is generally disclosed in chinese patent with patent publication No. CN209383478U, which mainly comprises a reaction tank, a rotating shaft, and a disk vertically fixed on the rotating shaft, wherein when in use, part of the disk is immersed in sewage and is driven by the rotating shaft to rotate (the rotating shaft is usually connected with driving members such as an external servo motor through a transmission mechanism).

The traditional biological rotating disk technology has low pollutant load, pollutants are decreased progressively along the water flow direction, for the same disk area, the reaction gradient above water and under water is low, so that the front end cannot reach the nitrification degree and only carbon source pollutants are degraded, the rear end only generates the nitrification reaction and the carbon source is insufficient, effective denitrification cannot be realized, and the reaction gradient of the water part and the water part of the same disk in the middle section is insufficient, so that the denitrification is insufficient. In addition, the existing biological rotating disc has a single operation mode and cannot be flexibly adjusted according to the pollutant condition.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem that exists among the practical application, the utility model aims to provide a novel rotation type biomembrane process sewage treatment device, through the intensive supply adjustment to local dissolved oxygen in biological rotating disc depth of immersion, rotation rate and the reaction tank, can solve traditional biological rotating disc on water, pollutant degradation reaction gradient undersize under water in a flexible way, the problem of denitrogenation dephosphorization reaction can not effectively take place in same carousel region when rotatory, and concrete scheme is as follows:

the utility model provides a novel rotation type biomembrane process sewage treatment device, includes the reaction tank and sets up the biological rotating disk in the reaction tank, biological rotating disk includes pivot and the vertical fixation who is connected with the transmission of external drive device epaxial disc, be provided with water inlet and delivery port on the reaction tank, still include:

the immersion depth adjusting unit is configured to be used for adjusting the immersion depth of the biological rotating disc immersed in the reaction tank;

the rotating speed adjusting unit is configured to be in control connection with the driving device and used for adjusting the rotating speed of the biological rotating disc;

the oxygen supply regulating unit comprises an oxygen supply device arranged in the reaction tank and/or outside the reaction tank and is configured to be used for regulating the oxygen supply rate of the water/underwater part of the biological rotating disc;

the pollutant concentration detection unit is configured for detecting the concentration of the sewage pollutant in the reaction tank and outputting a pollutant concentration detection signal;

and the control unit is configured to be in signal connection with the pollutant concentration detection unit, is in control connection with the immersion depth adjusting unit, the rotating speed adjusting unit and the oxygen supply adjusting unit, receives the pollutant concentration detection signal and outputs a control signal to control the actions of the adjusting units.

According to the technical scheme, the biomembrane carrier device, namely the biological rotating disc, is rotated to enable the biomembrane to alternately run on water and under water and correspondingly and continuously switch in aerobic, anoxic and anaerobic environments, so that the synchronous optimized removal of pollutants such as COD, TN, TP and the like in the sewage is completed. Compared with the traditional contact oxidation method, the method does not need sewage and sludge backflow, has short anaerobic/aerobic dephosphorization and anoxic/aerobic denitrification paths, high biological activity and less opportunity of carbon source robbing for denitrification and dephosphorization, and can ensure better synchronous denitrification and dephosphorization effect. In addition, the supply of oxygen can be flexibly adjusted by adjusting the rotating speed of the biological membrane and the immersion depth of sewage and enhancing oxygen supply if necessary. Compared with the traditional biological rotating disc, the biological load density is higher, the load is higher, and the utilization rate of carbon source pollutants for nitrification and denitrification and phosphorus release and absorption is higher.

Furthermore, mounting bases are arranged at two ends of the rotating shaft, a bearing is coaxially arranged in each mounting base and the rotating shaft, and the rotating shaft is arranged horizontally or obliquely;

the immersion depth adjusting unit includes:

and the lifting mechanism is arranged between the reaction tank body and the mounting base, is in control connection with the control device and is used for lifting or lowering the position height of the mounting base.

Further, the lifting mechanism comprises a fixed section and a telescopic section which are coaxially and telescopically matched, the fixed section is fixedly connected with the reaction tank body, and one end, far away from the fixed section, of the telescopic section is connected with the mounting base;

and a driving piece for changing the relative position of the fixed section and the telescopic section is arranged between the fixed section and the telescopic section.

Through the technical scheme, the depth of the biological rotating disc immersed in the sewage can be flexibly adjusted according to the requirement.

Furthermore, a universal rotating spherical hinge support structure is arranged at the joint of the mounting base and the lifting mechanism.

Through the technical scheme, the depth of the biological rotating disc immersed in the sewage can be adjusted, the inclination of the biological rotating disc can be adjusted by changing the heights of the installation bases at the two ends of the rotating shaft, and then the horizontal type is changed into the horizontal type, so that the immersion depth of the front end of the biological rotating disc is shallower than that of the rear end of the biological rotating disc, the front end of the biological rotating disc is supplemented with more oxygen, or the immersion depth of the front end and the rear end of the biological rotating disc is adjusted according to needs.

Furthermore, the driving device comprises a gear coaxially sleeved on the rotating shaft, a servo motor in transmission connection with the rotating shaft and a speed reducer thereof;

the rotating speed adjusting unit comprises a motor controller in control connection with the servo motor, and the motor controller is in control connection with the control device.

Through the technical scheme, the rotating speed of the biological rotating disk can be conveniently adjusted through the control device.

Further, the oxygen supply adjusting unit includes:

the overwater air blowing unit comprises an air blower or an air extraction device arranged on the reaction tank and is used for blowing air or extracting air for the filler part on the water of the biological rotating disc;

the underwater aeration unit comprises at least one group of aeration devices arranged at the bottom of the reaction tank and is used for supplying oxygen to the sewage in the reaction tank;

wherein, the blower or the air extraction device and the aeration device are connected with the control device in a control way.

Through above-mentioned technical scheme, can utilize air-blower, air exhaust device to blow air or bleed air to the rotating biological disk of sewage liquid level top, do benefit to the circulation of air current, increase the oxygen supply volume. The underwater aeration device can be used for supplying oxygen to the part of the biological rotating disk positioned in the sewage.

Furthermore, a cover body used for sealing or semi-sealing the biological rotating disk is fixedly or movably arranged above the reaction tank.

Through above-mentioned technical scheme, can promote above-mentioned oxygen suppliment regulating unit's regulation effect.

Furthermore, the biological rotating discs are arranged in a plurality of sections, and the end parts of the sections of biological rotating discs are provided with connecting pieces for the sections of biological rotating discs to be connected in series or in parallel.

Through the technical scheme, the modularized arrangement is not only beneficial to the production and transportation of the biological rotating disk, but also enables the biological rotating disk to be flexibly configured and used according to the requirement of sewage treatment scale.

Further, the section of the disc is circular or polygonal or circular-like.

Furthermore, a biological filler for the attachment and growth of microorganisms required for the degradation of pollutants is arranged on the disc, and the filler structure and the integral frame for supporting and fixing the filler are configured into a disc type, a polygonal disc type, a cylinder type and a cylinder type;

the biological filler is formed by weaving and fixing organic filler or penetrating air holes after forming inorganic filler.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) by arranging the immersion depth adjusting unit, the rotating speed adjusting unit, the oxygen supply adjusting unit and the pollutant concentration detecting unit, the immersion depth, the rotating speed and the oxygen supply rate of the biological rotating disc can be adjusted in time according to the change of the sewage pollutant concentration in the reaction tank, so that the nitrification and denitrification efficiency on the biological rotating disc can be further changed, and the problems that the degradation reaction gradient of pollutants on water and under water of the traditional biological rotating disc is too small, and the denitrification and dephosphorization reaction can not effectively occur in the same rotating disc area when the traditional biological rotating disc rotates can be flexibly solved;

(2) through setting up lifting mechanism and the cover body that changes the rotating biological disk closure for the regional area of oxygen suppliment on the rotating biological disk piece and oxygen suppliment proportion obtain accurate control, can adjust in a flexible way according to pollutant concentration in the sewage.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention (without a cover body);

FIG. 2 is a schematic view of the overall structure of the present invention (including the cover body);

fig. 3 is a schematic view of the overall structure of the present invention (including a universal rotating ball hinge support structure);

FIG. 4 is a fourth schematic view of the overall structure of the present invention (the oxygen supply device is highlighted);

FIG. 5 is a side view of the sewage treatment device with a rotary biomembrane method of the utility model;

FIG. 6a is a schematic diagram of the disc-shaped disc and the rotating shaft (cross-section taken along an axis perpendicular to the rotating shaft);

FIG. 6b is a schematic diagram of the engagement between the cylindrical disk and the rotating shaft (cross-sectional view taken along the axial direction perpendicular to the rotating shaft);

FIG. 6c is a schematic diagram of the disc-shaped plate and the rotating shaft (cross-section taken along an axis parallel to the rotating shaft);

FIG. 6d is a schematic diagram of the engagement of the cylindrical disk with the rotating shaft (cross-section taken along an axis parallel to the rotating shaft).

Reference numerals: 1. a reaction tank; 2. a rotating biological disk; 3. a water inlet; 4. a water outlet; 5. a rotating shaft; 6. a disk; 7. a drive device; 8. mounting a base; 9. a bearing; 10. a lifting mechanism; 11. a fixed section; 12. a telescopic section; 13. a hydraulic cylinder; 14. a universal rotating spherical hinge support; 15. a servo motor; 16. a speed reducer; 17. mounting a platform; 19. an above-water blower unit; 20. an underwater aeration unit; 21. an aeration disc; 22. an aeration pipe; 23. a blower; 24. a cover body; 25. a slide rail; 26. a screw rod; 27. rotating the base platform; 28. a drive motor; 29. a flange; 30. biological stuffing.

Detailed Description

In the sewage treatment process, the biological rotating disk replaces a fixed filter material with a rotating disk, and when the biological rotating disk works, the disk of the rotating disk is immersed or partially immersed in a contact reaction tank filled with sewage, and the rotating disk is driven by a driving device 7 to continuously rotate at a certain linear speed by a rotating shaft 5. The disks are alternately contacted with sewage and air, and after a period of rotation, a layer of biofilm is attached to the disks. When the biological membrane is transferred into sewage, the biological membrane adsorbs organic pollutants in the sewage, and absorbs dissolved oxygen in a water film outside the biological membrane to decompose organic matters, so that microorganisms can reproduce in the process. When the disk is rotated out of the reaction tank, the disk is contacted with air, and the air is continuously dissolved into the water film to increase the dissolved oxygen. In the process, besides the transfer of organic substances (BOD, COD) and O2, other substances such as CO2, NH3 and the like are transferred between the biological membrane attached to the disk and the sewage and air, so that a continuous process of adsorption, oxidative decomposition and oxygen absorption is formed, and the sewage is continuously purified.

However, as mentioned above, the conventional bio-disc technology has low pollutant load, the pollutants are gradually decreased along the water flow direction, for the same disc area, the water and water reaction gradient is low, so that the front end cannot reach the nitrification degree and only degrades carbon source pollutants, the rear end only performs nitrification reaction but has insufficient carbon source, and effective denitrification cannot be performed, and the intermediate section has insufficient reaction gradient for the water part and the water part of the same disc, and thus denitrification is also insufficient. In addition, the existing biological rotating disc has a single operation mode and cannot be flexibly adjusted according to the pollutant condition.

The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1, a novel sewage treatment device by a rotary biological membrane method comprises a reaction tank 1 and a biological rotating disk 2 arranged in the reaction tank 1. And a water inlet 3 and a water outlet 4 are respectively and oppositely arranged at two ends of the reaction tank 1. The biological rotating disk 2 comprises a rotating shaft 5 in transmission connection with an external driving device 7 and a plurality of disks 6 vertically fixed on the rotating shaft 5. In operation, the plate 6 of the biological rotating disk 2 is partially immersed in the sewage in the reaction tank 1 and is driven to rotate by an external driving device 7.

The utility model discloses in, sewage treatment plant still includes immersion depth regulating unit, rotational speed regulating unit, oxygen suppliment regulating unit, pollutant concentration detecting element and the control unit.

As shown in fig. 1 and 2, two ends of the rotating shaft 5 are provided with mounting bases 8, a bearing 9 is coaxially arranged in the mounting base 8 and the rotating shaft 5, and the rotating shaft 5 is rotatably connected with the mounting bases 8 through the bearing 9. In an embodiment, the mounting base 8 may be fixed to a floor outside the reaction tank 1, and the rotating shaft 5 may be horizontally or obliquely disposed as required.

Wherein the immersion depth adjusting unit is configured to adjust the immersion depth of the biological rotating disk 2 in the reaction tank 1. In detail, the immersion depth adjusting unit specifically includes a lifting mechanism 10, and the lifting mechanism 10 is disposed between the tank body of the reaction tank 1 and the mounting base 8, and is in control connection with the control device, and is used for lifting or lowering the position height of the mounting base 8, so as to adjust the immersion depth of the biological rotating disk 2.

In a specific embodiment, the lifting mechanism 10 includes a fixed section 11 and a telescopic section 12 that are coaxially and telescopically engaged, the fixed section 11 is fixedly connected to the tank body of the reaction tank 1, and an end of the telescopic section 12 away from the fixed section 11 is connected to the mounting base 8. And a driving piece for changing the relative position of the fixed section 11 and the telescopic section 12 is arranged between the fixed section and the telescopic section. The driving part is configured to be a hydraulic cylinder 13 or an air cylinder, and the driving end of the hydraulic cylinder 13 or the air cylinder is in control connection with a control device.

In another embodiment, the fixing section 11 and the telescopic section 12 are provided with locking holes along the height direction thereof, and a bolt for fixing the positions of the fixing section 11 and the telescopic section 12 is inserted into the locking holes. The driving member is configured to enable an operator to drive the telescopic section 12 to move relative to the fixed section 11, and after the telescopic section moves to a set position, the telescopic section and the fixed section are fixed by a bolt. Through the two technical schemes, the depth of the biological rotating disc 2 immersed in the sewage can be flexibly adjusted according to the requirement.

The utility model discloses in, optimize, as shown in FIG. 3, mounting base 8 with lifting mechanism 10 meets the department and sets up to universal rotating spherical hinge support 14 structure, and flexible section 12 can be the multi-angle rotation in three-dimensional space with pivot 5 promptly. Based on above-mentioned structure, not only can adjust the degree of depth that biological rotating disk 2 submerges to in the sewage, can also be through the high gradient of adjusting biological rotating disk 2 that changes 5 both ends mounting base 8 of pivot, and then change the horizontal formula into the recumbent formula, can make biological rotating disk 2 front end (be close to the one end of reaction tank 1 water inlet 3 promptly) submergence degree of depth be lighter than the rear end submergence degree of depth, make the front end obtain more oxygen supplyes, perhaps adjust the submergence degree of depth of biological rotating disk 2 front and back end as required.

The utility model discloses in, with the drive arrangement 7 that 5 transmissions of pivot are connected is located including coaxial cover the epaxial gear of pivot 5 and with the servo motor 15 and the reduction gear 16 thereof that 5 transmissions of pivot are connected. The power output shaft of the speed reducer 16 is connected to the rotating shaft 5 through a chain or a gear. It should be noted that, since the mounting base 8 carrying the rotating shaft 5 is lifted integrally under the action of the lifting mechanism 10, in order to avoid the transmission connection between the servo motor 15 and the rotating shaft 5 being disconnected during the lifting process of the rotating shaft 5, correspondingly, the servo motor 15 and related components thereof are also configured to be capable of moving up and down, as shown in fig. 2, a mounting platform 17 is fixedly connected to one side of the mounting base 8 away from the biological rotating disk 2, and the servo motor 15 and related components thereof are disposed on the mounting platform 17 and lift or tilt along with the mounting base 8.

The rotating speed adjusting unit is configured to be in control connection with the driving device 7 and used for adjusting the rotating speed of the biological rotating disk 2. In detail, the rotation speed adjusting unit includes a motor controller in control connection with the servo motor 15, the motor controller is in control connection with the control device, and the motor controller is used for controlling the rotation speed of the servo motor 15.

The utility model discloses in, oxygen suppliment regulating unit is including setting up the oxygen suppliment device in reaction tank 1 and/or outside reaction tank 1, and the configuration is for being used for adjusting the partial oxygen suppliment speed on water and/or under water of rotating biological disk 2. As shown in fig. 2 and 4, the oxygen supply regulating unit includes an above-water blower unit 19 and an underwater aeration unit 20.

The overwater air blowing unit 19 comprises an air blower 23 or an air suction device which is arranged on the reaction tank 1, and an air outlet of the air blower 23 faces the disk 6 of the biological rotating disk 2 and is used for blowing air or sucking air to the overwater filler part of the biological rotating disk 2 so as to increase the oxygen supply rate.

The underwater aeration unit 20 includes at least one set of aeration devices provided at the bottom of the reaction tank 1 for supplying oxygen to the sewage in the reaction tank 1. The aeration device comprises a plurality of aeration pipes 22 and a plurality of aeration discs 21 communicated with the aeration pipes, wherein the aeration discs 21 are sequentially arranged along the axial direction of the biological rotating disc 2 and are used for aerating and oxygenating the discs 6 at different positions under the sewage level, and the aeration oxygenation amount can be different according to different positions of the discs 6.

The blower 23 or the air extractor and the aerator are all connected with the control device in a control way, and the action of the aerator is adjusted according to the control signal output by the control device. Based on the technical scheme, the mode of strengthening oxygen supply is adopted, and when the concentration of pollutants is high and the biological rotating disk 2 is inconvenient to submerge in depth or rotate at a rotating speed, the oxygen supply of ventilation can be strengthened by combining local area underwater aeration or water blast.

As shown in fig. 2 and fig. 3, a cover 24 for closing or semi-closing the biological rotating disk 2 is fixedly or movably arranged above the reaction tank 1. In the present invention, a movably disposed cover 24 is preferably used.

In one embodiment, the cover 24 is a multi-piece arc-shaped laminated structure, which is unfolded and spliced into a semi-cylindrical shape, and two end faces of the multi-piece arc-shaped laminated structure are rotatably disposed on the rotating shaft 5 through the bearing 9. The central position of the end face of each lamination is coaxially and fixedly provided with a gear, each lamination is in transmission connection with a driving motor 28 through a gear rotating part, and the driving motor 28 is used for driving the gears to rotate so as to control the opening and closing of the cover body 24. In the present invention, the driving motor 28 is connected to the control device. In another embodiment, as shown in fig. 2, the cover 24 has an axial direction parallel to the axial direction of the shaft 5, and the cover 24 integrally includes a semi-cylindrical or semi-cylindrical-like housing. The two side edges of the reaction tank 1 are provided with slide rails 25, and the edge of the cover body 24 is provided with a pulley and other structures in cooperation with the slide rails 25, so that the cover body 24 can move along the length direction of the reaction tank 1, i.e. the axial direction of the rotating shaft 5, and further selectively shield the biological rotating disk 2. Preferably, as shown in fig. 3, a screw rod 26 is disposed along a length direction of one side edge of the reaction chamber 1, and a slider is disposed on the screw rod 26 and fixedly connected to two side edges of the cover 24. The two ends of the screw rod 26 are provided with rotating bases 27, and one end of the screw rod 26 is connected with a driving motor 28 in a transmission manner, so that a screw rod transmission assembly is formed. The movement of the cover 24 is controlled by the lead screw transmission assembly, and the driving motor 28 is in signal connection with the control device in the present embodiment.

Based on the technical scheme, the biological rotating disk 2 is divided into a closed type, a semi-closed type and an open type according to the direct contact degree of the disk with the atmosphere, the closed type and the semi-closed type are suitable for an oxygen supply mode of intensified oxygen supply, and the open type is suitable for an oxygen supply mode of natural reoxygenation, so that the regulation effect of the oxygen supply regulation unit can be improved.

Through the proposal, the utility model discloses the regulation of 2 depth of immersion of biological rotating disk, rotational speed and oxygen suppliment speed has been realized.

In order to meet the treatment requirements of sewage with different pollutant concentrations more flexibly, the utility model discloses in still set up pollutant concentration detection unit. The pollutant concentration detection unit is configured to be used for detecting the concentration of pollutants in the sewage in the reaction tank 1, such as COD, TN, TP and other pollutants in the sewage, and detecting and outputting a pollutant concentration detection signal by using a related detection instrument.

The control unit is configured to be in signal connection with the pollutant concentration detection unit, is in control connection with the immersion depth adjusting unit, the rotating speed adjusting unit and the oxygen supply adjusting unit, receives the pollutant concentration detection signal and outputs a control signal to control the action of each adjusting unit. The utility model discloses in, above-mentioned control unit includes single chip microcomputer control module or FPGA control module or customization intelligent control module etc. and its built-in algorithm of setting for receives above-mentioned pollutant concentration detection signal, calculates required each item control parameter index on output reaction tank 1 and the biological rotating disk 2, like biological rotating disk 2's slew velocity, biological rotating disk 2's inclination, disc 6's immersion depth and air-blast speed of air-blower 23 etc.. Based on the control parameter indexes, the rotating speed of the biological rotating disc 2 can be adjusted according to the concentration of pollutants, the rotating speed is mainly slower, and the maximum speed is not more than 800 rpm. The immersion depth or the liquid level depth of the contact part of the biological rotating disk 2 can be adjusted according to the concentration of pollutants, and the maximum depth does not exceed the central height.

Optimally, in order to obtain a more accurate pollutant concentration detection value, the pollutant concentration detectors are further arranged to be multiple in number and respectively collect pollutant concentrations at different positions in the reaction tank 1, such as positions close to the water inlet 3 and the water outlet 4.

As shown in FIG. 5, the biological rotating disk 2 is provided in a plurality of sections, and the end parts of the sections of biological rotating disk 2 are provided with connecting pieces for connecting the sections of biological rotating disk in series or in parallel. For example, a flange 29 for tandem connection may be provided coaxially on the shaft 5, or a connection base may be provided at both ends of the shaft 5 for tandem connection. Above-mentioned technical scheme, the modularized setting not only is favorable to the production and the transportation of biological rotating disk 2, also makes above-mentioned biological rotating disk 2 require nimble configuration use according to sewage treatment scale.

In further detail, in one embodiment, as shown in fig. 6a and 6c, the cross section of the disk 6 is configured as a circle, a polygon or a circular-like structure. In another embodiment, as shown in fig. 6b and 6d, the disc 6 is cylindrical and is arranged coaxially with the shaft 5.

The disc 6 is provided with a bio-filler 30 for attachment growth of microorganisms required for contaminant degradation.

The biological filler 30 is woven and fixed by an organic filler, or formed by an inorganic filler and then penetrates through pores, and common fillers and novel combined fillers of the existing biological contact oxidation method can be adopted. The filler types include but are not limited to elastic filler, soft filler, semi-soft filler, carbon fiber filler, biological rope, inorganic filler, catalytic filler, functional filler and the like, and in practice, the filler can be flexibly selected and matched according to different sewage qualities and degradation removal requirements. The filler structure and the integral frame for supporting and fixing the filler are configured into a disc type, a polygonal disc type, a cylinder type and a cylinder type.

The technical proposal of the utility model is equally suitable for the biological filler 30 which carries the catalyst and needs illumination to enhance the catalytic ability.

The sewage treatment system adopting the technical principle is divided into central transmission and peripheral transmission or the combination of the central transmission and the peripheral transmission according to different rotation transmission modes. The central transmission mode is suitable for small-scale sewage treatment, and the peripheral transmission mode is suitable for larger-scale sewage treatment.

The utility model discloses a theory of operation and beneficial effect as follows:

the utility model discloses operation and reaction state do, through the drive biological rotating disk 2 rotates, and biofilm carrier 30 rotates to the surface of water more than from sewage, through immersion depth, rotation rate, nature or reinforce the oxygen suppliment design, makes the adnexed sewage change from anaerobic state to aerobic state rapidly on the biofilm carrier 30, and adnexed sewage carbon source pollutant degrades simultaneously excessive bioabsorption phosphorus rapidly on the filler. The nitrification reaction occurs when the water is rotated to a certain degree. After the nitrified sewage falls into water or rotates to the water along with the filler, denitrification is carried out under the denitrification effect, and the concentration of carbon source pollutants is further reduced. As the equipment rotates, the filler enters an anaerobic state and releases phosphorus biologically, and then rises above the water surface to perform the next round of reaction state conversion. Through the enhanced supply adjustment of the immersion depth, the rotation speed and the local dissolved oxygen, the problems that the degradation reaction gradient of pollutants on water and under water of the traditional biological rotating disc 2 is too small, and the denitrification and dephosphorization reaction can not effectively occur in the same rotating disc area during rotation can be flexibly solved.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a novel rotation type biomembrane process sewage treatment device, includes reaction tank (1) and sets up biological rotating disk (2) in reaction tank (1), biological rotating disk (2) include pivot (5) and the vertical fixation that are connected with external drive device (7) transmission disk (6) on pivot (5), be provided with water inlet (3) and delivery port (4) on reaction tank (1), its characterized in that still includes:

an immersion depth adjusting unit configured to adjust an immersion depth of the bio-disc (2) in the reaction tank (1);

a rotating speed adjusting unit which is configured to be in control connection with the driving device (7) and is used for adjusting the rotating speed of the biological rotating disc (2);

the oxygen supply regulating unit comprises an oxygen supply device arranged in the reaction tank (1) and/or outside the reaction tank (1) and is configured to regulate the oxygen supply rate of the water/underwater part of the biological rotating disk (2);

the pollutant concentration detection unit is configured for detecting the concentration of the pollutant in the sewage in the reaction tank (1) and outputting a pollutant concentration detection signal;

and the control unit is configured to be in signal connection with the pollutant concentration detection unit, is in control connection with the immersion depth adjusting unit, the rotating speed adjusting unit and the oxygen supply adjusting unit, receives the pollutant concentration detection signal and outputs a control signal to control each adjusting unit to act.

2. The novel sewage treatment device by using the rotary biofilm method according to claim 1, wherein mounting bases (8) are arranged at two ends of the rotating shaft (5), a bearing (9) is coaxially arranged in each mounting base (8) and the rotating shaft (5), and the rotating shaft (5) is arranged horizontally or obliquely;

the immersion depth adjusting unit includes:

and the lifting mechanism (10) is arranged between the tank body of the reaction tank (1) and the mounting base (8), is in control connection with the control device, and is used for lifting or lowering the position height of the mounting base (8).

3. The novel sewage treatment device by using a rotary biomembrane method according to claim 2, wherein the lifting mechanism (10) comprises a fixed section (11) and a telescopic section (12) which are coaxially and telescopically matched, the fixed section (11) is fixedly connected with the tank body of the reaction tank (1), and one end, far away from the fixed section (11), of the telescopic section (12) is connected with the mounting base (8);

and a driving piece for changing the relative position of the fixed section (11) and the telescopic section (12) is arranged between the fixed section and the telescopic section.

4. The novel sewage treatment device by using a rotary biomembrane method according to claim 2, wherein the joint of the mounting base (8) and the lifting mechanism (10) is provided with a universal rotating spherical hinge support (14) structure.

5. The sewage treatment device by using the novel rotary biomembrane method according to claim 1, wherein the driving device (7) comprises a gear coaxially sleeved on the rotating shaft (5), a servo motor (15) in transmission connection with the rotating shaft (5) and a speed reducer (16) thereof;

the rotating speed adjusting unit comprises a motor controller in control connection with the servo motor (15), and the motor controller is in control connection with a control device.

6. The novel sewage treatment apparatus by a rotary biofilm method according to claim 1, wherein the oxygen supply adjusting unit includes:

the overwater air blowing unit (19) comprises an air blower (23) or an air extraction device which is arranged on the reaction tank (1) and is used for blowing air or extracting air to the overwater filler part of the biological rotating disk (2);

the underwater aeration unit (20) comprises at least one group of aeration devices arranged at the bottom of the reaction tank (1) and is used for supplying oxygen to the sewage in the reaction tank (1);

wherein, the blower (23) or the air extraction device and the aeration device are connected with the control device in a control way.

7. The novel sewage treatment plant by using a rotary biofilm method as in claim 1, characterized in that a cover body (24) for closing or semi-closing the rotating biological disk (2) is fixedly or movably arranged above the reaction tank (1).

8. The novel sewage treatment device by using the rotary biological membrane method as claimed in claim 1, wherein the biological rotating disk (2) is provided in a plurality of sections, and connecting pieces for connecting the sections in series or in parallel are arranged at the end parts of the sections of the biological rotating disk (2).

9. The novel rotary biofilm process sewage treatment plant as claimed in claim 1, wherein the cross section of the discs (6) is provided in a circular or polygonal or circular-like shape.

10. The novel sewage treatment device by the rotary biofilm method according to claim 1, wherein a biological filler (30) for the attachment and growth of microorganisms required for pollutant degradation is arranged on the disc (6), and the integral frame form of the filler structure and the supporting and fixing filler is configured into a disc type, a polygonal disc type, a cylinder type and a cylinder type;

the biological filler is formed by weaving and fixing organic filler or penetrating air holes after forming inorganic filler.

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