KR19980056986U - Activator of aerobic microbial group for wastewater treatment - Google Patents

Abstract

The present invention inserts an additional simple aerobic microorganism activation device in this state without any change to the activated sludge process, which is a kind of biological treatment method of organic wastewater, which is widely used in various facilities. Accordingly, the present invention provides a wastewater treatment apparatus that greatly suppresses the generation of odors in an organic wastewater treatment facility, improves the efficiency of wastewater treatment, and improves the anti-corruption and sedimentation of generated sludge.

As a means of the present invention for achieving the above object, the activation device of the aerobic microbial group to be added separately in the state as it is without any change to the existing activation treatment process, the activation device is It is composed of a single motor in the base which is fixed to the upper support object, the aerator installed so that its output shaft is directed downward, and connected to the output shaft of the aerator, the rotation is freely supported in the center of the inner bottom of the treatment tank Penetrating through the aeration rotary tube for supplying external air into the water, a pellet activator filled in the net bag body fixedly fixed to the upper side of the water of the treatment tank and floating in the water, and the center of the net bag body. And a circulation passage surrounding the aeration rotation tube and an image of the aeration rotation tube. Waste water flows up and down while crushing the air flowing out through a plurality of air outlet holes for dispersing and discharging the air introduced through the plurality of air inlet holes formed at the end into fine air bubbles. It is equipped with a rotary blade to guide so that it can be installed, the redox potential meter for detecting the redox potential in the water and the level switch for measuring the water level of the waste water, which is installed on the upper support of the treatment tank. · Its characteristics are that it automatically controls the inflow and outflow of wastewater and activates the aerobic microbial group as the dominant species in the sludge treatment process of wastewater.

Description

Activator of aerobic microbial group for sewage and wastewater treatment

The present invention inserts an additional simple aerobic microorganism activation device in this state without any change to the activated sludge process, which is a kind of biological treatment method of organic wastewater, which is widely used in various facilities. Accordingly, the present invention provides a wastewater treatment apparatus that greatly suppresses the generation of odors in an organic wastewater treatment facility, improves the efficiency of wastewater treatment, and improves the anti-corruption and sedimentation of generated sludge.

In general, the microorganisms that play a major role in the biological treatment process used for the treatment of organic wastewater use the mixed culture system as it is, consisting of aerobic microorganism group, anaerobic microorganism group and anaerobic microorganism group.

In the conventional activated sludge process, the group of microorganisms involved in the treatment cannot be artificially controlled, so in addition to the aerobic microorganisms directly involved in the decomposition of organic matter, the organic anaerobic microorganisms and anaerobic microorganisms are characterized by producing organic acids and generating acidic or neutral odors. As microbial groups coexist together, there are various problems in operation management. That is, there is low treatment efficiency, odor generation, sludge decay and sedimentation failure, and instability of operation.

The present invention is to separately install the activator of the aerobic microorganisms for organic wastewater treatment in order to solve the conventional problems as described above in the state as it is without any change to the existing activated sludge process To provide.

The activator is to install a pellet activator in the device so that the air supplied to the bottom side of the circulation passage installed to penetrate the center of the pellet activator is broken into fine bubbles and evenly distributed to the outer peripheral side of the circulation passage to rise The waste and waste water facilitates a smooth circulation in and out of the circulation passage, and further promotes the microorganisms of the waste and waste water in contact with the pellet activator and simultaneously activates the aerobic microorganism. On the other hand, it is responsible for inhibiting or stopping the activity of anaerobic microorganisms and anaerobic microorganisms, so that aerobic microbial groups become dominant species in the wastewater to be treated, and can kill anaerobic microorganisms and anaerobic microorganisms. High treatment efficiency of waste water and smell Life, aims a device that can eliminate the problems of corruption and poor settling of sludge will be devised to provide.

The present invention as a means for achieving the above object,

The aerobic microorganism activator is installed separately as it is, without any change to the existing activation treatment process, and the activator is composed of one motor on the support fixed to the upper support object. With the aerator installed so that its output shaft faces downwards:

An aeration rotation tube connected to an output shaft of the aerator, the rotation of which is freely supported at the center of the inner bottom of the processing apparatus and for supplying external air;

A pellet activator filled in a net bag body fixedly installed on the upper side of the treatment apparatus and floating in the water;

A circulation passage penetrating the central portion of the bag body on the net and surrounding the aeration rotary tube;

Waste air is crushed by fine air bubbles while adhering the air introduced through the plurality of air inlet holes formed at the upper end of the aeration rotary tube around the plurality of air outlet holes for discharging and discharging under the circulation passage. , Rotating blades for inducing to flow in the downward direction; And

A redox potential meter for detecting a redox potential in water and a level switch for measuring the level of the wastewater;

The present invention is such that the inflow and outflow of the waste water to the treatment device is automatically controlled and simultaneously activated aerobic microbial group to the dominant species in the sludge treatment process of the waste water introduced into the treatment device. Is there.

1 is an overall cross-sectional view for explaining the present invention.

Figure 2 is a cross-sectional view of the air supply pipe of the aerator which is the main part of the present invention.

※ Explanation of code for main part of drawing

1 processing device 2 upper support

3: aerator 4: circulation passage

5: net bag body 6: redox potentiometer

7: level switch 11: inlet

12: overflow 13: outlet

14: drain 21: pedestal

31: motor 32: output shaft

33: hollow part 34: aeration rotary tube

35: air inlet hole 36: air outlet

37: rotary wing 37: fixed tube

51: Pellet Activator

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall cross-sectional configuration for explaining the present invention, Figure 2 is a cross-sectional view of the air supply pipe of the aerator which is the main part of the present invention,

Reference numeral 1 denotes a treatment device for activating aerobic microbial group to be a dominant species in the treatment process of wastewater and wastewater, and is composed of one motor 31 on the upper support 2 of the treatment device 1. An aerator 3 for supplying air into the water of the processing apparatus 1 is fixed on the pedestal 21.

The motor 31 is vertically supported so that the output shaft 32 faces downward, and the output shaft 32 has an aeration rotary tube freely supported by the inner bottom of the processing apparatus 1 ( 34) is connected.

An inlet 11 and an overflow 12 are formed at an upper side of the treatment apparatus 1 to which an inlet line (not shown) connected with an electric or electronic valve is installed to control the inflow of wastewater. The outlet 13 for discharging the treated water from the lower side of the treatment apparatus 1 in the outlet is connected to an outlet line (not shown) in which an electric or electronic valve is installed, such as the inlet 11. In the lower part of the apparatus 1, a drain 14 for discharging activated sludge is installed. On the other hand, the inlet 11 and outlet 13 is configured to be automatically controlled by a control device (not shown).

The aerator 3 includes an aeration rotary tube 34 having a hollow portion 33 connected to the output shaft 32 of the motor 31, and the upper and lower portions of the aeration rotary tube 34. There are a plurality of air inlet hole 35 and the air outlet hole 36, the aeration rotary tube 34 is rotated at high speed by attaching a rotary blade 37 around the air outlet hole 36 formed on the lower side When operating, air bubbles exiting the air outlet hole 36 was allowed to break the rotor blade 37 very small.

The aeration rotary tube 34 may be installed by itself, or may be wrapped in a fixed tube 38 mounted to the upper support 2 as shown in the example of FIG. 2.

A circulation passage 4 is installed around the aeration rotary tube 34, and an upper end of the circulation passage 4 is installed lower than the inlet 11 so as to remain locked in water at all times. It is installed to be located directly above the rotary blade 37.

The mesh bag 5 fixedly installed on the inner upper side of the processing apparatus 1 is installed to surround the upper side of the circulation passage 4, and therein is filled with a pellet activator 51 in the form of particles. The pellet activator 51 is a powder (Powder) under a condition that the neutral corrosive soil is sufficiently matured in a low-molecular state by biotechnology using sulfur bacteria, so that the soluble portion is Furbobo (Furubo). 한) The main raw material is the colloidal particle (Micell Colloid), and 10% or more of divalent and trivalent salts such as ferrous sulfate and ferric sulfate are added to the basic raw material, and 40% of water is used. The pellet activator 51 as described above is dissolved in water very slowly and reacts with aerobic microorganisms to activate the aerobic microbial group to become dominant species. And the.

Next, the upper supporter 2 is deeply immersed in the wastewater introduced into the treatment apparatus 1 to detect a redox potential in the treatment apparatus 1 and to control the potential to be maintained at +200 mV or more. (6) is provided, and it is preferable that the redox potentiometer 6 is kept out of contact with air because it may cause a malfunction when it comes in contact with air.

In addition, the upper support (2), such as the redox potentiometer (6) was equipped with a level switch (7) for controlling so that the water level of the waste water flowing into the treatment apparatus 1 is not higher than the inlet (11), The level switch 7 is configured to control both the inlet 11 side valve and the outlet 13 side valve so that the waste water introduced into the treatment apparatus 1 is lower than the inlet 11 and the circulation passage 4. It keeps the water level higher than the top.

Referring to the operation of the present invention configured as described above are as follows.

When the aerator 3 is turned on, the motor 31 is driven to rotate the aeration rotary tube 34 at a high speed, so that the rotary blade 37 attached to the bottom thereof moves the water on the upper side outward. As the air is exhausted, the air present in the air outlet hole 36 flows out into the water, and as a result, the hollow portion 33 forms the vacuum portion, so that the outside air flows into the upper air inlet hole 35. As it flows in and out into the water through the air outlet hole 37 of the lower side, the air flowing out of the air outlet hole 37 thus forms a relatively large bubble, the rotation attached around the air outlet hole 37 Since the wing 37 acts to crush the large bubbles finely, air bubbles caused by the air flowing out from the lower side of the aeration rotary tube 34 are uniformly dispersed in a myriad of bubbles having a very fine size. It will rise.

In addition, since the rotary blade 37 is formed at the lower end of the circulation passage 4, bubbles dispersed around the rotary blade 37 are evenly distributed between the circulation passage 4 and the processing apparatus 1 to rise. .

The waste water present in the bottom side of the treatment apparatus 1 flows upward by the floating force of the bubbles as described above, while the waste water present in the upper side is in the lower part of the upper side of the circulation passage 4. The waste water flowing upward from the outside of the circulation passage 4 is always in contact with the pellet activator 51 filled in the net bag 5. The sludge of the waste water is in contact with the pellet activator 51 sufficiently in order to oxidize in series, and the oxidation reaction of such sludge maintains the redox potential in the treatment apparatus to be +200 mV or more. Sludge from sewage and wastewater introduced in 1) can be artificially formed so that aerobic microorganisms become dominant species.

As a series of oxidation reactions are carried out on the sludge as described above, hydrogen sulfide, ammonia, etc., which are easy to oxidize, are decomposed or nonvolatile, and SH groups, amino groups, and amine groups, which are odor generators, become stable binders and generate odors. Facilitating enzyme groups are also inactivated.

In addition, when the concentrated activated sludge is treated in the treatment apparatus of the present invention, the main microbial change is carried out as follows. That is, bacteria, actinomycetes, and soothing fungi resistant to free radicals start to proliferate, and at the same time, the anaerobic bacteria and the anaerobic anaerobic bacteria are stopped and die immediately. Subsequently, a microbial environment that is not resistant to the pellet activator, but whose aerobic microorganism is the dominant species is achieved as the same type of microorganisms multiply in large quantities. Under these circumstances, even if the concentration of activated sludge (MLSS) is kept high, most of the activated aerobic microorganisms become the main axis, and thus the processing efficiency is increased and the stability against load fluctuation can be obtained.

EXAMPLE

Concentrated sludge generated in the activated sludge process for treating sewage was incubated in an aerobic microorganism activator using pH 6.0, a redox potential of -200 mV and a blowing strength of 100 as samples. As a result of contacting and oxidizing for at least 1 hour, pH 6.2, redox potential + 300mV, and odor strength 2 or less resulted in the killing of anaerobic microorganisms and the anaerobic microbial group, and the aerobic microbial group became the dominant species.

As a result of continuously introducing the sludge activated by the aerobic microbial group into the aeration tank of the activated sludge treatment process, the aerobic microbial group with the redox potential in the aeration tank maintained +100 mV in the continuous operation for about one week created the dominant species. From this, the odor could be removed in the entire process of activated sludge treatment and the removal efficiency of BOD components could be maintained more than 95%.

According to the present invention as described above, the pelletizing activator is filled in a cylindrical circulation passage inside the processing apparatus, and a net bag body installed on the outer circumference of the circulation passage and the inner surface of the processing apparatus, and then operated by an aerator to rotate the aeration tube. The fine bubbles are evenly distributed on the lower side to float the wastewater upwards, and the wastewater on the upper side flows downward through the circulation passage while the wastewater flows up and down and circulates. By sufficiently contacting and oxidizing the sludge with the pellet activator, the redox potential of the sewage and wastewater introduced into the treatment device can be maintained at +200 mV or more, thereby forming an aerobic microorganism into a dominant species. Such effects include the removal of odors generated during the whole treatment process of wastewater and wastewater, the prevention and reduction of sludge decay, and the treatment efficiency. Various processing, such as stabilization goal of improving the quality of the treated water to a designed with features that can be achieved with a single basic operation such that the predominant species of aerobic microorganisms in the activated sludge.

Claims (1)

The aerobic microorganism activator is installed separately as it is, without any change to the existing activation treatment process, and the activator is composed of one motor on the support fixed to the upper support object. With the aerator installed so that its output shaft faces downwards: An aeration rotation tube connected to an output shaft of the aerator, the rotation of which is freely supported at the center of the inner bottom of the processing apparatus and for supplying external air; A pellet activator filled in a net bag body fixedly installed on the upper side of the treatment apparatus and floating in the water; A circulation passage penetrating the central portion of the bag body on the net and surrounding the aeration rotary tube; Waste air is crushed by fine air bubbles while adhering the air introduced through the plurality of air inlet holes formed at the upper end of the aeration rotary tube around the plurality of air outlet holes for discharging and discharging under the circulation passage. , Rotating blades for inducing to flow in the downward direction; And A redox potential meter for detecting a redox potential in water and a level switch for measuring the level of the wastewater; Activated apparatus for aerobic microbial group for sewage and wastewater treatment, comprising: a bioactivator.