KR101778636B1 - Classifying device of microorganism concentration for bioreactor - Google Patents

Abstract

The present invention relates to a classifying device installed in a treatment tank for classifying a substance contained in wastewater in a treatment tank into a substance decomposable by a microorganism and a substance not decomposable by a microorganism, An upper wastewater inlet pipe connected to the separator; A lower wastewater inlet pipe connected to the separator; A vibration plate installed on a side surface of the wastewater inlet pipe for applying vibration energy of a low vibration for a long period to the treatment tank; A lower spinning vane plate for mixing the deposited sludge under the treatment vessel; A discharging unit connected to the separating unit; And a conveying unit connected to the separating unit. The classification apparatus according to the present invention can improve the efficiency of operation at all times even under a low concentration DO load. In the case of the existing MBR method, it is possible to reduce operating expenses, The activity of the biological reaction process can be optimally maintained and an automatic control system with improved treatment efficiency can be constructed thereby facilitating the operation of the biological reaction process and improving the stability.

Description

CLASSIFYING DEVICE OF MICROORGANISM CONCENTRATION FOR BIOREACTOR [0002]

The present invention relates to a classifier for a biological reactor of a wastewater treatment facility, and more particularly, to a classifier for a biological reactor of a sewage treatment facility, which is capable of selectively separating an inactive TOC (total organic carbon) and a MLSS (mixed liquer suspended solid) The present invention relates to a classifying apparatus including an apparatus.

MLSS (mixed liquer suspended solid) was used as a key management factor to determine reaction activity index in the main treatment process of wastewater such as standard activated sludge, sequencing batch reactor (SBR), membrane bioreactor (MBR) Is widely used. The MLSS is generally interpreted in a different meaning from the total suspended solids (TSS) component, but is used extensively to express the specificity of the determination to express the mass or biological activity of a microorganism as an indicator. However, the use of MLSS numbers without any particular distinction can cause a lot of errors when used as a key management driving indicator of bioreactor operation, and care should be taken to use this number as a key management factor.

For example, the total concentration of MLSS in the aerobic tank (Mt, mg / L) is the concentration of living microorganisms (Ma, mg / L) in the aerobic tank, (Mi, mg / L) and inorganic suspended solids concentration (Mii / mg / L), which are not decomposed by microorganisms such as dead microorganisms , mg / L), which could be accompanied by errors if a comprehensive MLSS is used as a key management driving indicator, without separately identifying them.

Conventional wastewater treatment methods include a sewage treatment apparatus and method using a microorganism deposition amount control and process automatic control apparatus such as Korean Patent Laid-Open Publication No. 2009-0042066. The recycling of dead microorganisms and waste sludge in the aerobic tank is repeated, and if this is repeated for several years, a waste sludge layer is formed to 10 to 20% of the volume of the reaction tank, There is a problem that the aeration efficiency produced by the power is inferior.

In view of the fact that a substance capable of degrading by microorganisms is selectively separated and subjected to physical transportation or discharge, an effect of improving the ratio of healthy microorganism species in the MLSS constitution may occur, And to develop a technique capable of securing the health of the species and ensuring the efficiency, leading to the present invention.

Korean Patent Publication No. 10-2009-0042066

It is an object of the present invention to provide a method and an apparatus capable of inducing transport or extracorporeal discharge according to whether or not a substance is decomposable by a microorganism to induce efficient biomass metabolism in the exhalation reaction tank and to reduce oxygen uptake rate efficiency And the operation of the bioreactor is improved through the microbial classification mechanism, thereby providing a classifier having improved treatment efficiency.

In accordance with the above object,

CLAIMS 1. A classification device for classifying a substance contained in wastewater in a treatment tank into a substance decomposable by microorganisms and a substance not decomposable,

(1) a separator for classifying the microorganism-degradable substance and the non-degradable substance;

(2) an upper wastewater inlet pipe having one end connected to the separating unit and the other end having an upper wastewater inlet for sucking substances floating in the upper part of the water surface of the treatment tank and delivering the substances to the separation unit;

(3) has a lower end connected to the separating part, the other end positioned below the water surface of the treatment tank, and the lower end having a lower wastewater inflow part for sucking the sludge material immersed in the lower part of the treatment tank, Wastewater inlet pipe;

(4) a vibration plate installed on a side surface of the lower wastewater inlet pipe for applying vibration energy of a low vibration for a long period to the wastewater in the treatment tank;

(5) a lower swirl-flow vane plate installed around the lower wastewater inlet pipe adjacent to the lower wastewater inlet of the lower wastewater inlet pipe, for mixing the sludge deposited at the lower portion of the treatment vessel with the wastewater;

(6) a discharging unit connected to the separating unit for discharging the decomposable substance by microorganisms; And

(7) A classifier, which is connected to the separator, for conveying a substance decomposable by microorganisms to the treatment tank.

The classification apparatus according to the present invention can classify the microorganism-decomposable substance and the non-decomposable substance to improve the operation efficiency at any time under a low concentration DO load, thereby reducing operating expenses, which is the weakest point of the conventional MBR method In addition, even in the case of a method in which other biological treatments are used as the main process, the microbial activity can be optimally maintained to improve the treatment efficiency, thereby facilitating the operation of the biological reaction process and improving the stability.

1 is a front view of a classification apparatus according to an example of the present invention.
2 is a left side view of a classifier according to an example of the present invention.
3 is a plan view of a classifying device according to an example of the present invention.
Fig. 4 is a diagram schematically showing the operation mechanism of the lower vortical flow fan plate 4 connected to the separation section 1 in operation of the classification device according to the example of the present invention.
5 is a view schematically showing a change in the position of the lower vortical flow fan plate 500 during operation of the classifier according to an example of the present invention.
6 is a diagram schematically showing a flow of wastewater and water in a separation unit and a flow of a decomposable substance and a non-decomposable substance by a microorganism in a classification apparatus according to an example of the present invention.
FIG. 7 is a three-dimensional modeling image of a classifier according to an example of the present invention.
FIG. 8 is a photograph showing the experimental test results of the vibration plate using the classifying device according to an example of the present invention. FIG. 8 (a) is a photograph showing the operation test of the vibration plate, , And (c) a classification apparatus operated underwater.
FIG. 9 is a photograph showing the vibration plate mounted on the classifier, (a) a vibrating plate, (b) a vibrating body and a resonator of the vibrating plate, (c) to be.

The classifying apparatus of the present invention

CLAIMS 1. A classification device for classifying a substance contained in wastewater in a treatment tank into a substance decomposable by microorganisms and a substance not decomposable,

(1) a separator for classifying the microorganism-degradable substance and the non-degradable substance;

(2) an upper wastewater inlet pipe having one end connected to the separating unit and the other end having an upper wastewater inlet for sucking substances floating in the upper part of the water surface of the treatment tank and delivering the substances to the separation unit;

(3) has a lower end connected to the separating part, the other end positioned below the water surface of the treatment tank, and the lower end having a lower wastewater inflow part for sucking the sludge material immersed in the lower part of the treatment tank, Wastewater inlet pipe;

(4) a vibration plate installed on a side surface of the lower wastewater inlet pipe for applying vibration energy of a low vibration for a long period to the wastewater in the treatment tank;

(5) a lower swirl-flow vane plate installed around the lower wastewater inlet pipe adjacent to the lower wastewater inlet of the lower wastewater inlet pipe, for mixing the sludge deposited at the lower portion of the treatment vessel with the wastewater;

(6) a discharging unit connected to the separating unit for discharging the decomposable substance by microorganisms; And

(7) A transporting unit connected to the separating unit for transporting the decomposable substance by the microorganism to the treatment tank.

The classification apparatus of the present invention classifies the substance contained in the wastewater in the treatment tank into a substance decomposable by microorganisms and a substance which is not decomposable and discharges an inert non-decomposable substance and a dead microorganism, By inducing precipitation of suspended solids by using a plate to stabilize the microorganism, the degradable substance can be decomposed using active microorganisms, and the dissolved oxygen for the active microorganisms can be effectively used to reduce power consumption Effect can be exerted.

At this time, its main determinant can be determined by calculating oxygen consumption rate through sOUR oxygen uptake, which can be measured by measuring the degree to which the respiration rate of the microorganism directly causes a decrease in dissolved oxygen

The consumption rate expressing the general oxygen reduction can be expressed by the following equation (1).

[Equation 1]

In the equation (1), OUR is an oxygen uptake rate, d [O ₂ ] is a change in dissolved oxygen concentration in the treatment tank, and dt is a change in time.

The dissolved oxygen (DO) concentration can be measured in the treatment tank, and the OUR can be monitored automatically by measuring the decrease in DO

The specific oxygen uptake rate (sOUR) can be expressed as bio volume per mg / g per hour as shown in Equation 2 below.

&Quot; (2) "

The MLVSS (mixed liquor volatile suspended solid) (MLVSS) refers to the concentration of volatile suspended solids in the mixed liquid of the reactor.

Accordingly, only microorganisms having high activity can be retained in the reactor through the classifier of the present invention, and other substances causing oxygen depletion can be continuously removed, thereby reducing the total air consumption and energy consumption.

The specific oxygen uptake rate (sOUR) is influenced by the accumulation of inert compounds in the bioreactor. So far, biomass concentrations were considered to be identifiable by MLVSS, but since MLVSS contains masses of old and dead microorganisms, this is an indicator of biomass viability Can not be.

The ratio of inert material in the influent to the inert material in the effluent refers to the accumulation of inert material in the reactor and the MLVSS / MLSS ratio refers to the change in VSS (volatile suspended solid).

Conventionally, for a conventional MLSS in a reaction tank, the ratio of the nutrient source to the microorganism, that is, the F / M ratio, is increased without any special countermeasure against repetitive deposition of an inorganic substance that adversely affects or burdens the pure function and processing efficiency of the pure microorganism , Which continuously demands the weighting of the MLSS load from 6,000 to 25,000 mg / L and lowers the respiratory contribution of the supplied oxygen.

Hereinafter, the classifier of the present invention will be described in more detail with reference to the accompanying drawings. The drawings are only for illustrating the present invention, and the scope of the present invention is not limited thereto.

Figures 1, 2 and 3 show a front view, a left side view, and a top view, respectively, of a classifier according to an example of the present invention.

1 to 3, in the classification apparatus of the present invention, the separation unit 100 performs a function of classifying a substance decomposable by microorganisms and a substance not decomposable from sludge and suspended substances introduced into the interior.

The upper wastewater inlet pipe 200 is connected to the separator 100 and the upper wastewater inlet pipe 200 connected to the separator 100 may be one or more.

The upper wastewater inlet pipe 200 is connected at one end to the separator 100 and at the other end an upper wastewater inlet 210 for sucking materials floating above the water surface of a treatment tank .

The upper wastewater inflow section 210 formed in the upper wastewater inflow pipe 200 is connected to the water surface as illustrated in Fig. 1 for selectively sucking only substances such as scum floating on the water surface of the wastewater. And the upper wastewater inlet 210 may be buoyant so as to be positioned parallel to the water surface.

The upper wastewater inflow section 210 sucks materials floating in the upper part of the wastewater water surface in the treatment tank and can transfer the wastewater to the separation section 100 through the upper wastewater inflow pipe 200. To this end, a first air supply pipe 600 for supplying air bubbles may be disposed inside the upper wastewater inlet pipe 200.

The first air supply pipe 600 receives air from an air pump (not shown) and generates air bubbles in the upper wastewater inlet pipe 200. The air bubbles rise due to the density difference in the upper wastewater inflow pipe 200 and enter the separation unit 100. The power of the air bubbles is sucked from the upper wastewater inflow unit 210 to be introduced into the upper wastewater inflow pipe 200, And is a power source for moving the suspended solids flowing into the separator 100. 1, the first air supply pipe 600 located inside the upper wastewater inflow pipe 200 has one end connected to an air pump (not shown) and the other end connected to the upper wastewater inflow pipe 200 The other end of the first air supply pipe 600 may be positioned 10 to 30 cm above the lowermost end of the upper wastewater inlet pipe 200.

Therefore, the classifying apparatus of the present invention may further include (8) a first air supply pipe located inside the upper wastewater inlet pipe and supplying air bubbles into the upper wastewater inlet pipe.

In the classification apparatus of the present invention, the lower wastewater inlet pipe 300 is connected to the separation unit 100.

The lower wastewater inlet pipe 300 has one end connected to the separator 100 and the other end positioned below the water surface 10 of the treatment tank and the other end sucking the sludge materials immersed in the lower part of the treatment tank, The lower wastewater inflow portion 310 for transmitting the lower wastewater inflow portion 310 is formed. The lower wastewater inflow section 310 sucks the sludge materials deposited in the lower part of the treatment tank under the wastewater water surface in the treatment tank and transfers the sludge materials to the separation section 100 through the lower wastewater inflow pipe 300.

For this purpose, a second air supply pipe 700 for supplying air bubbles may be located inside the lower wastewater inlet pipe 300.

The second air supply pipe 700 receives air from an air pump (not shown) and generates air bubbles in the lower wastewater inlet pipe 300. The air bubbles rise due to the density difference in the lower wastewater inflow pipe 300 and enter the separation unit 100. The power of the air bubbles is sucked from the lower wastewater inflow unit 310 to be introduced into the lower wastewater inflow pipe 300, And is a power source for moving the sludge materials introduced into the separating unit 100. 1 and 2, the second air supply pipe 700 located in the lower wastewater inflow pipe 300 is connected at one end to an air pump (not shown) And the other end of the second air supply pipe 700 may be positioned at an upper portion of the lower end of the lower wastewater inlet pipe 300 by about 30 to 50 cm above the lowest end of the wastewater inlet pipe 300.

Therefore, the classifying apparatus of the present invention may further include (9) a second air supply pipe located inside the separating unit and the lower wastewater water inflow pipe, for supplying air bubbles into the lower wastewater inflow pipe have.

In the classifier of the present invention, the first air supply pipe 600 and the second air supply pipe 700 may be connected to an air pump (not shown) through the air suction pipe 800, as shown in FIG. The air pump is connected to the first air supply pipe 600 and the second air supply pipe 700 through the air suction pipe 800 to supply air. At this time, the air pump has a gradient of a valve (V / V) or a pipe so that suspended substances or sludge materials in the upper wastewater inlet portion 200 and the lower wastewater inlet portion 300 can be transferred to the separation portion 100 It is preferable to maintain an appropriate flow rate.

Accordingly, the classifying apparatus of the present invention may further include (10) an air pump connected to the first air supply pipe and the second air supply pipe, for supplying air to the first air supply pipe and the second air supply pipe have.

When the sludge and floating material flowing into the separating unit are floated with a certain vibration and settled down, the low density material is located in the upper part of the separation part and the material having a high particle density is located in the lower part relatively .

For this purpose, the classifying apparatus of the present invention includes a vibration plate 400, and the vibration plate 400 is installed on the side of the lower wastewater inlet pipe 300 to apply vibration energy of a long period of low vibration to the wastewater in the treatment vessel have.

One end of the lower wastewater inlet pipe 300 may be connected to the separator 100 and the separator 100 may be connected to the vibration plate 400 through the lower wastewater inlet pipe 300, Classification of sludge and suspended matter using vibration energy of long period vibration.

The vibration plate 400 classifies sludge and suspended matters using the vibration energy of the long period of low vibration. The physical reaction applied at this time is classified into Stokes' law and Einschtin's kinetic theory ), Which is largely related to the size of the particles, and generally follows the following rule in particle systems of 0.2 μm or more.

The Navier-Stokes equations, which are the accelerations of particle convection in the fluid, assuming a very small fluid resistance coefficient, Reynolds number, in the fluid in the steady stokes flow state, ) Is not well applied, and the equation of motion has a deflected flow in the direction that the force is transmitted in a state where the particles are not compressed.

The formula applied at this time can be considered as follows.

here,

p is the fluid pressure (in Pa)

u is the flow velocity (in m / s)

ω is the vorticity (in s ^-1 )

로서 u의 속도에 비례함을 알 수 있다
in conclusion

Is proportional to the velocity of u

Therefore, in a particle system of 0.2 ㎛ or more of unspecified MLSS constituent factors applied with vibration, transmission of energy through oscillation motion is preferable because it can positively affect sedimentation velocity.

Among the MLSS constituent factors, the Stokes' Einstein equation is well known according to the electrophoretic kinetic theory of Einstein in a particle system of 0.2 μm or less. Therefore, only the portion applied to the present invention will be described as follows.

In the Stokes-Einstein equation, the particle flow velocity below 0.2 μm in an infinitesimal fluid with infinitely small Reynolds number is defined as a periodic motion or a slight intermittent blow with negligible intensity Stoke's law can be followed.

In this case,

로서

as

,The drag coefficient

,

,Damping constant

,

r is the radius of the spherical particle forming the suspended state.

이 생물반응조 처리수 정도로 적당하다면 아인슈타인-스몰루초프스키(Einstein-Smoluchowski) 관계식의 결과는 스토크스-아인슈타인(Stokes-Einstein) 관계식이 된다.At this time

If appropriate for this bioreactor treatment, the result of the Einstein-Smoluchowski relation becomes the Stokes-Einstein relation.

D is the turbidity diffusion constant,

k _B is Boltzmann's constant,

T is absolute temperature.

In the above equation, the low viscosity and the small particle diameter increase turbidity, so that the present invention increases the category to which the Stokes law is applied due to the intermittent blow, And it is useful.

Meanwhile, the vibration plate 400 may be a connection structure of the vibrating body 410 and the resonator 420.

The resonance body 420 receives the vibration by the vibrating body 410 and transmits energy in the low frequency band. For example, the vibration generated according to the pressure of air injected into the lower wastewater inlet pipe 300 through the second air supply pipe 700 can be transmitted to the resonance body 420 through the vibrating body 410.

The resonance body 420 may be a flat plate, a curved plate, or a wavy plate in which vibration can be directly applied to the wastewater, and one or more plates may be included in the vibration plate 400. When a plurality of resonators 420 are included, each resonator 420 may be the same in size or shape, or may be all different. For example, one or more first resonators having a relatively small size and a relatively large- Lt; RTI ID = 0.0 > second < / RTI > When the plurality of resonators 420 are included, a plurality of oscillators 410 for transmitting vibrations to the resonators 420 may also be included. For example, the number of resonators 420 and the number of oscillators 410 may be the same.

The vibration plate 400 may have a frequency of 0.01 to 120 Hz, preferably a frequency of 1 to 120 Hz, more preferably a frequency of 10 to 100 Hz, depending on the suspended state of the reactor.

(Vibration) of the vibrating body during the operation of the classifying apparatus according to the present invention is determined by the vibration of the vibrating body 410 depending on the pressure of air and the amount of air injected through the second air supply pipe 700, So that it can be easily and variably controlled according to the adjustment of the valve opening degree, the air amount, and the like.

If the frequency of the vibrating plate 400 is less than 0.01 Hz, it affects the settling of floating suspended particulate suspended solids (SS) in a proper classification mechanism of the microorganism-degradable substance and the non-degradable substance If the frequency exceeds 120 Hz, there is a problem that excessive energy cost occurs, and adversely affect the sedimentation mechanism of suspended particulate suspended solids.

The classifier of the present invention is installed around the lower wastewater inlet pipe 300 adjacent to the lower wastewater inlet 310 of the lower wastewater inlet pipe 300 to mix the sludge deposited at the lower portion of the treatment vessel with the wastewater And a lower swirl-flow vane plate 500.

The lower vortical flow fan plate 500 may include a cylindrical main body portion having both upper and lower surfaces opened and a plurality of blades. The sludge deposited on the lower portion of the treatment tank through rotation is mixed with the wastewater.

4 is a view schematically showing the operation mechanism of the lower vortical flow fan plate 500 connected to the separation unit 100 in operation of the classifier according to an embodiment of the present invention.

4, the lower swirl vane plate of the classifier of the present invention is installed around the lower wastewater inlet pipe 300 adjacent to the lower wastewater inlet 310 of the lower wastewater inlet pipe 300, So that the sludge immersed in the lower part of the treatment tank is mixed with the wastewater.

At this time, the vibration plate installed on the side surface of the lower wastewater inlet pipe 300 applies vibration energy of low vibration for a long period to the wastewater in the treatment tank to classify the sludge and floating substances.

The position of the lower vortical flow fan plate 500 can be appropriately adjusted along the lower wastewater inlet pipe 300 according to the amount of the sludge deposited on the lower portion of the treatment vessel.

Fig. 5 is a view showing a change in the position of the lower vortical flow fan plate 500 during operation of the classifier of the present invention in an example of the classifier of the present invention.

5, the lower vortical flow impeller 500 is installed around the lower wastewater inlet pipe 300 adjacent to the lower wastewater inlet 310, and may be appropriately disposed depending on the amount of sludge deposited in the lower portion of the treatment vessel Its position can be adjusted up and down along the lower wastewater inlet pipe 300. For example, in the early stage of operation of the classifier of the present invention, when the sludge immersed in the lower part of the treatment tank exists, the lower vortical flow fan plate 500 is moved downward along the lower wastewater inlet pipe 300 to mix the sludge with the wastewater (See FIG. 5 (a); the lower wastewater inlet pipe 300 is consequently extended by the body portion of the lower vortical flow fan plate 500 And the wastewater inlet 310 is located inside the main body of the lower vortical flow fan plate 500 so as to flow sludge or the like sucked along the opening portion opened to the lower portion of the main body of the lower vortical flow fan blade 500 If the sludge immersed in the lower part of the treatment tank is not present in the operation ballast of the classifier of the present invention and the wastewater is biologically stable, the lower vortical flow fan plate 500 is connected to the lower wastewater inlet pipe 3 The lower vortical flow fan plate 500 may be positioned at a predetermined distance from the lower portion of the processing vessel so that the lower vortical flow vane plate 500 500 through the wastewater inflow portion 310 located inside the main body portion).

The classifying apparatus of the present invention includes a discharging unit 910 connected to the separating unit 100 and discharging the sedimented material from the separating unit 100 to the lower layer. The discharging unit 910 may selectively discharge the sedimented material to the lower portion of the discharging unit 910, which is classified by the separating unit 100, into the extracorporeal or transferring tank. The material settled down to the lower layer portion may be an organic suspended material or an inorganic suspended material including a microorganism having low activity not decomposable by microorganisms.

The classifying apparatus of the present invention includes a conveying unit 920 connected to the separating unit 100 to convey the sedimented material in the separating unit 100 to a position higher than the lower level in the treatment vessel. The conveying unit 920 can convey the material settled up to the position of the upper layer compared to the lower layer where the discharging unit 910 is located, to the treatment tank.

Fig. 6 is a diagram schematically showing the flow of wastewater in the separation unit and the flow of the wastewater contained in the wastewater in the classification apparatus according to an example of the present invention.

6, the upper and lower wastewater inflow pipe 200, the lower wastewater inflow pipe 300, the discharge unit 910, and the transfer unit 920 are connected to the separation unit 100.

The upper wastewater inlet pipe 200 connected to the separation unit 100 may have one or more upper wastewater inlet pipes 200. The wastewater introduced into the upper wastewater inlet pipe 200 may be separated from the lower part The sedimented material is transported to the treatment tank through the transport section 920, and the sedimented material in the separation section 100 is discharged to the outside of the system through the discharge section 910.

The wastewater flowing into the separating unit 100 through the lower wastewater inlet pipe 300 is submerged in the separating unit 100 to a position higher than the lower end of the separating unit 100, And the material precipitated in the separating part 100 to the lower layer is discharged to the outside of the system through the discharging part 910. [

At this time, the control of the flow of the wastewater and / or the material to the carry section 920 or the discharge section 910 can be performed through the respective valves capable of controlling the flow rates of the carry section 920 and the discharge section 910 For the adjustment of the valve, the classifying apparatus of the present invention may further include a control unit. The control unit measures the concentration of dissolved oxygen (DO) in the treatment tank, judges whether the respiration rate is appropriate, estimates the amount of the decomposable substance by the microorganism of the present treatment unit, The wastewater and / or materials may be sent out of the treatment vessel or system through the transfer section 920 or the discharge section 910. [

For example, it is difficult to determine whether the concentration of the DO in the treatment tank is proper at the beginning of the operation of the classification apparatus according to the present invention, and the probability that the substances floating on the sludge and the treatment surface below the treatment tank are largely degradable by microorganisms It is possible to open the valve included in the discharge portion 910 and discharge the decomposable substances by the microorganisms in the treatment tank to the outside of the system. When such an operation mode is maintained for a long time, substances that can not be decomposed by the microorganisms in the treatment tank are reduced as the operation time passes. In the case where the substances contained in the wastewater of the treatment tank which are normally operated except for the temporary or intermittent are mostly degradable by the microorganisms, the valve (indicated by A in Fig. 4) contained in the transfer section 920 is opened The microorganisms may be returned to the treatment tank to perform the nutrient control function.

In the classifier of the present invention, any treatment may be used as long as the treatment tank is not limited in its size, material or form, and has a wastewater treatment mechanism therein, and may preferably be an aerobic tank of the bioreactor. The classification apparatus according to the present invention can be easily installed without any limitations insofar as the microorganism-decomposable substance and the non-decomposable substance are separated and transported or discharged, and the present invention can be applied without modification of the process without distinguishing existing new treatment plants Preferably, it is installed in an exhalation process such as MBR, SBR, oxidation, standard activated sludge and the like.

FIG. 7 shows a three-dimensional modeling image of the classifying device according to an example of the present invention, and FIG. 8 is a photograph showing a result of an operation test of the vibration plate using the classifying device according to an example of the present invention. 8 is a photograph showing (1) a photograph showing the operation test of the vibrating plate, (2) a photograph in which the classification apparatus is installed in water, and (3) a state in which the classification apparatus is operated in water. In (3) of FIG. 8, when the classifier is operated in water, the air supplied to the upper and lower wastewater inflow pipes through the first air supply pipe and the second air supply pipe by the air pump is about 5 kg / cm < ² > at a pressure of about 40 L / min.

FIG. 9 is a photograph showing vibration plates mounted on (a) and (b) vibration plates, (c) classification devices, and (d) classification devices in the classification device according to an example of the present invention.

Such classifying apparatus of the present invention can be applied to a classifying apparatus which utilizes the empirical deposition degree of a proper microbial deposit position and a physical sedimentation position induced by a diffusion classifying mechanism throughout the entire treatment tank induced by centrifugal, The microorganism can be selectively discharged, and its concrete operation is as follows.

Normally, microbial degradable materials can be effectively decomposed by active microorganisms in the treatment tank, but non-degradable materials gradually form a dead space within the bath, And the deposition proceeds extensively. The deposition thereof is not so small as to the volume of the bath and may be reported to be very severe to the extent of about 10 to 20% by volume.

The following specific reactions can be induced in the long term when slowly classifying sludge and long-term sediment suspended materials using the vibration energy of the long period low vibration.

1. A cluster type microorganism group which contributes to the treatment efficiency while preventing side effects such as floc disassembly of microorganisms by mitigating the impact applied to the microorganisms is protected, and most of the vibration energy is utilized for sedimentation of microorganism suspended particles Can be done.

2. It is located on the bottom surface due to the weight difference according to the particle size, such as inorganic matter, which has a lower sedimentation rate than the sedimented flocs, while reducing energy consumption, It is desirable to discharge out of the system because it does not contribute to the improvement of the treatment efficiency because floating substances floating on the water surface can not form flocs with easy decomposable substances. The length or the inflow position of the sludge outflow pipe 300 can be controlled and the discharge and the amount can be controlled by using the discharge unit 910 to easily realize periodic discharge out of the system.

3. It is desirable to maintain the ratio of F / M (food, material) in the stabilizer of the stable operation of suspension and sedimentation by sorting suction transport of microorganisms according to settling position. At this time, if the air is fed to the separation tank by the air-lifting which is pulled out by the first air supply pipe 600 and the second air supply pipe 700, the bottom sludge sludge and the scum on the water surface Can be continuously operated for a long period of time in a state where it is appropriately excluded as an off-gas discharge mechanism. Repeatedly this operation is very advantageous for increasing the health of active microorganisms.

4. Adjusting the injected air volume and air pressure can change the frequency and vibration pattern, optimizing the conditions for classification of microorganisms, and it is advantageous to control the operation of the apparatus.

5. In order to improve the dead space or the dead space of the waste sludge deposited over a long period of time in the reactor tank under operation, sweeping of the immersion sludge is performed through the operation of the lower spin- So that it is possible to easily discharge the off-gas.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be clear to those who have knowledge of.

100:
200: Upper wastewater inlet pipe
210: Upper wastewater inlet
300: Lower wastewater inlet pipe
310: Lower wastewater inlet
400: vibrating plate
410: vibrating body
420:
500: lower swirl-flow blade plate
600: first air supply pipe
700: second air supply pipe
800: air suction pipe
910:
920:

Claims (9)

CLAIMS 1. A classifying device installed in a treatment tank for classifying substances contained in wastewater in a treatment tank according to a settling position in a separation section to remove deposits in the treatment tank,
The treatment tank is an aerobic tank,
(1) a separator for classifying a substance having a different sedimentation position at an oscillation of 0.01 to 120 Hz;
(2) an upper wastewater inlet pipe having one end connected to the separating unit and the other end having an upper wastewater inlet for sucking substances floating in the upper part of the water surface of the treatment tank and delivering the substances to the separation unit;
(3) a lower wastewater inlet for sucking a mixture of sludge materials and wastewater into the lower part of the treatment tank, the other end being connected to the separation part, the other end being located below the water surface of the treatment tank, A lower wastewater inlet pipe formed with an inlet;
(4) a vibration plate installed on a side surface of the lower wastewater inlet pipe for applying vibration energy of a frequency of 0.01 to 120 Hz to the wastewater in the treatment tank;
(5) a lower swirl-flow vane plate installed around the lower wastewater inlet pipe adjacent to the lower wastewater inlet of the lower wastewater inlet pipe, for mixing the sludge deposited at the lower portion of the treatment vessel with the wastewater;
(6) a discharging unit connected to the separating unit for discharging the sedimented material to the lower layer in the separating unit;
(7) a conveying unit connected to the separating unit, for conveying a substance precipitated in the separating unit to a position that is an upper layer than the lower layer;
(8) a first air supply pipe located inside the upper wastewater inflow pipe and supplying air bubbles into the upper wastewater inflow pipe;
(9) a second air supply pipe located inside the separator and the lower wastewater inlet pipe for supplying air bubbles into the lower wastewater inlet pipe; And
(10) an air pump connected to the first air supply pipe and the second air supply pipe, for supplying air to the first air supply pipe and the second air supply pipe; And
(11) each valve for controlling the flow rate of the carry section and the discharge section,
Wherein the vibration plate generates vibrational energy after the lower vortical flow fan blade mixes the sludge deposited on the lower portion of the treatment tank with the wastewater.
delete delete The method according to claim 1,
Wherein the first air supply pipe located inside the upper wastewater inlet pipe has one end connected to the air pump and the other end located above the lowermost end of the upper wastewater inlet pipe.
5. The method of claim 4,
And the other end of the first air supply pipe located inside the upper wastewater inlet pipe is located 10 to 30 cm above the lowest end of the upper wastewater inlet pipe.
The method according to claim 1,
Wherein the second air supply pipe located inside the lower wastewater inlet pipe has one end connected to the air pump and the other end located above the lowermost end of the lower wastewater inlet pipe.
The method according to claim 6,
And the other end of the second air supply pipe located inside the lower wastewater discharge pipe is located 30 to 50 cm above the lowermost end of the lower wastewater discharge pipe.


delete delete

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