KR101271365B1 - Waste water treatment micro organism fermentation system - Google Patents

Abstract

The present invention relates to a microbial culture apparatus for wastewater treatment by maximizing the efficiency of wastewater treatment by receiving microorganisms from a microbial culture apparatus associated with a wastewater storage device when the activity of microorganisms decreases.
A microorganism culturing apparatus which can supply microorganisms or denatured microorganisms in connection with a wastewater treatment apparatus and supply them to a collection tank or an aeration tank of a wastewater treatment apparatus, wherein the microbial culture apparatus is partitioned into a culture body by a partition and has an activity from the collection tank or the aeration tank. A mixture of a stirring tank receiving the lowered sludge, a plurality of precipitation baffles provided at a predetermined interval in the longitudinal direction on the side of the stirring tank, and a mixture of sludge and a growth aid supplied from the stirring tank divided by the precipitation baffles are precipitated. Aeration tank provided by installing an air supply to maintain the proper dissolved oxygen while preventing the sedimentation, sedimentation tank is partitioned by the sedimentation baffle and moved through the sedimentation baffle to precipitate the solids to the bottom to separate from the microorganism, and the sedimentation tank Microorganisms partitioned into partitions on the sides of It is characterized as temporal storage constituting a reservoir for microbial installation to supply the waste water treatment apparatus.

Description

Microbial culture apparatus for wastewater treatment {WASTE WATER TREATMENT MICRO ORGANISM FERMENTATION SYSTEM}

The present invention relates to a microbial culture apparatus for wastewater treatment, and more particularly, to a microbial culture apparatus for culturing or denaturing microorganisms in the field and supplying the wastewater treatment apparatus to increase the treatment efficiency of the wastewater treatment apparatus. .

Conventional wastewater treatment apparatus 1, as shown in Figure 5, for collecting the temporary waste water storage tank (2), and the waste water conveyed from the water collection tank (2) for reacting with the chemicals to agglomerate Chemical coagulation reaction tank (3), the primary settling tank (4) for precipitating and removing the aggregates generated in the coagulation reaction tank (3), and only the supernatant water of the primary settling tank (4) to be digested by aerobic microorganisms And aeration tank 5 for culturing / proliferating, a secondary precipitation tank 6 for precipitating and removing contaminants adsorbed by the activated sludge generated in the aeration tank 5, and the primary precipitation tank. The sedimentation sludge generated from (4) and the secondary sedimentation tank (6) is dehydrated using a dehydration facility (7) to be reduced and then treated by landfilling or incineration.

In the wastewater treatment apparatus to which the prior art is applied as described above, the treatment efficiency obtained by the pretreatment process is obtained by adding the biodegradation reaction of the biodegradable organic wastewater which is weak by only the pretreatment process by the chemical flocculation sedimentation reaction. Since it can be greatly increased, the wastewater treatment system using the activated sludge method using aerobic microorganisms is operated to obtain the maximum treatment efficiency with optimum economic efficiency.

In order to improve the treatment efficiency as described above, conventionally, useful microorganisms are selectively supplied to a collection tank or aeration tank to increase the treatment efficiency of hardly decomposable organic wastewater by using organic matter adsorption reaction of microorganisms.

In the wastewater treatment apparatus to which the prior art is applied, microorganisms that are not purely functional due to the adsorption and accumulation of excessively degradable organic matter or organic nitrogen in the sludge due to the biosorption characteristics of the microorganisms as the operation continues for a long time in the post-treatment biological treatment step. Degradation of treatment efficiency due to dysfunction, such as deactivation of the activity, is frequently occurring.

In order to solve this problem, it is solved by adding a decomposable organic substance or other species of sludge which is easily ingested by microorganisms, or adding a seedling or a seed agent to a sump or aeration tank.

However, because these degradable organic matters or other species of sludge cannot be added to the wastewater treatment system in addition to the additional planting or spawning agent, they are supplied from a culture facility or another culture facility installed separately from the wastewater treatment system whenever a problem occurs. Or the situation is to let the user input.

As such, it is not possible to cope with the microbial activity deterioration quickly because it does not have a connection with a facility or device for easily and efficiently supplying microorganisms to the wastewater treatment system. Because of the high cost of installation and operation, the overall cost burden of the wastewater treatment system is increased.

In addition, since the activity decreases due to excessive bioadsorption of microorganisms, the amount of waste sludge is excessively increased compared to the normal state. This happens.

In addition, since it takes a post-prescription form to restore the original state by supplying microorganisms separately after the activity decreases due to excessive bioadsorption of microorganisms, it takes a considerable time to reduce to the normal treatment state. There are a number of problems, such as deterioration in overall efficiency.

In the present invention, to solve the above problems, to provide a microbial culture apparatus that can be supplied to the collection tank or aeration tank of the wastewater treatment apparatus by culturing microorganisms or denatured microorganisms in conjunction with the wastewater treatment apparatus;

The microorganism culturing apparatus includes: a stirring tank receiving sludge with reduced activity from a water collecting tank or aeration tank by partitioning the culture body with a partition wall, and a precipitation baffle installed at a predetermined interval in the longitudinal direction on the side of the stirring tank; Aeration tank provided with an air supply to maintain a proper dissolved oxygen while preventing the mixture of the sludge supplied from the agitation tank and the growth auxiliary agent from being precipitated, and the precipitation baffle is partitioned by the precipitation baffle. It consists of a sedimentation tank to move through and settle the solids to the bottom to separate from the microorganism, and a microbial storage tank installed to supply to the wastewater treatment device while temporarily storing the cultured microorganisms partitioned by the partition wall on the side of the sedimentation tank, wastewater treatment Microorganisms when the activity of microorganisms in the device is reduced By receiving microorganisms from the culture apparatus, it is possible to achieve the purpose of maximizing the efficiency of wastewater treatment.

The present invention is equipped with a microbial culture or denatured culture apparatus for treating hardly degradable organic wastewater in conjunction with a wastewater treatment device to timely denature the cultured cultured microorganisms in a sump tank when an inhibitory factor such as deterioration of microbial activity occurs due to excessive bioadsorption reaction. Supplying in place has the effect of maximizing the efficiency of the wastewater treatment apparatus by delaying or significantly reducing the occurrence of wastewater treatment inhibitors.

In addition, in the present invention, as a growth aid used in microbial culture or denaturation culture, not only rice bran which is agricultural by-product, but also wheat bran, barley bran, soybean meal, livestock by-product, dairy by-products, and the like, do not use an expensive commercial seed agent. In addition, by operating on-site tailored to increase the activity of the activated sludge, it has another effect that can be expected to ultimately reduce operating costs.

1 is an overall configuration diagram showing a microbial culture apparatus for wastewater treatment to which the technique of the present invention is applied.
Figure 2 is a block diagram showing another example of a microbial culture apparatus for wastewater treatment applied technology of the present invention.
Figure 3 is a schematic diagram extracting the denaturation incubator of the microbial culture apparatus for wastewater treatment to which the technique of the present invention is applied.
Figure 4 is an example of applying the microbial culture apparatus for wastewater treatment to which the technique of the present invention is applied to the wastewater treatment apparatus.
Figure 5 is a block diagram of a wastewater treatment apparatus of the prior art that does not apply microbial degeneration culture apparatus.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration diagram showing a microbial culture apparatus for wastewater treatment to which the technique of the present invention is applied, Figure 2 is a block diagram showing another example of a microbial culture apparatus for wastewater treatment to which the technique of the present invention is applied, Figure 3 Fig. 4 is a schematic diagram of a modified incubator of the microbial culture apparatus for wastewater treatment to which the technique of the present invention is applied, and Fig. 4 will be described together as an example of application of the microbial culture apparatus for wastewater treatment to which the technique of the present invention is applied.

The conventional wastewater treatment apparatus 100 includes a collecting tank 101 for temporarily storing raw wastewater, a chemical coagulation reaction tank 102 for reacting and coagulating the wastewater transferred from the collecting tank 101 with chemicals, By transporting only the first settling tank 103 and the supernatant of the first settling tank 103 to precipitate and remove the aggregates generated in the flocculation reaction tank 102 to be digested and cultured / grown by aerobic microorganisms. Aeration tank 104, a secondary sedimentation tank 105 for sedimentation and removal of contaminants adsorbed by the activated sludge generated in the aeration tank 104, the primary sedimentation tank 103 and the secondary sedimentation tank ( The sedimentation sludge generated from 105) is dehydrated by dehydration using the dehydration unit 106, and then treated by landfilling or incineration.

In the present invention, further comprising a microbial culture apparatus 110 that can be supplied to the collection tank 101 or aeration tank 104 of the wastewater treatment apparatus 100 by culturing microorganisms or denatured microorganisms in conjunction with the wastewater treatment apparatus 100. It features.

The microorganism culturing apparatus 110 is divided into partitions 112 in a culture body 111 of a large space made of concrete or steel structure to excessively decompose organic matter or organic nitrogen from the collection tank 101 or the aeration tank 104. It is provided with the stirring tank 113 which receives the sludge which adsorbed and accumulate | stored and the activity fell.

In addition to the rice bran as a by-product of agricultural production to the stirring tank 113, a growth aid supply tank for supplying a growth aid used for microbial culture or denaturation culture, such as bran, barley bran, soybean meal, livestock processing by-products, dairy by-products, etc. It is provided.

The propagation aids in the propagation aid supply tank 114 may be supplied periodically or intermittently by conventional supply means (such as screws, feeders, etc.) controlled by a controller.

The stirring tank 113 is installed by the stirrer 118 rotated by the driving means 117 to evenly mix the supplied sludge and the growth aid to induce a saccharification and digestion reaction, to the stirring tank 113 It is connected to the heat supply 119 for supplying a heat source such as an electric heater, steam or solar heat so that the supplied growth aid is maintained at a temperature of 40 ~ 60 ℃ the optimum temperature for the saccharification reaction.

Of course, when the agitation tank 113 receives heat from the heat supply 119, it will be obvious that the controller is controlled to maintain the temperature within a set temperature range by a controller such as a temperature sensor.

On the side of the stirring tank 113, a plurality of sedimentation baffles 120 are installed at predetermined intervals in the longitudinal direction and partitioned into the aeration tank 121 and the settling tank 122, and the aeration tank 121 is separated from the agitation tank 113. An air supply 123, such as a ring blower or a perforated pipe, is installed to maintain a proper (0.5 ppm) dissolved oxygen (DO) while preventing the mixture of the supplied sludge and the growth aid.

The mixture of the aeration tank 121 is moved to the precipitation tank 122 through the precipitation baffle 120 by the air supplier 123 to precipitate the solids to the bottom to be separated from the microorganisms (supernatant), the precipitation baffle 120 The details of this document are the same, and the detailed description is omitted in the patent application filed by the applicant under the name "Waste water treatment device having a sedimentation baffle using microorganisms".

The microorganism storage tank 125 for supplying to the wastewater treatment apparatus 100 while temporarily storing the cultured microorganisms is installed on the side of the precipitation tank 122, and the microorganism supply to the microorganism storage tank 125 is the precipitation tank 122 and the microorganisms. It is possible to move naturally through the overflowware 124 installed in the partition wall 112 partitioning the reservoir 125.

The solid precipitated at the bottom of the settling tank 122 is supplied to the stirring tank 113 while preventing the overflow to the microorganism storage tank 125, the sludge processor 126 having a conventional crushing means to be reused or disposed of Install and configure more.

Looking at the process of treating wastewater using the microbial culture apparatus 110 for wastewater treatment to which the technique of the present invention is applied as described above.

The raw wastewater is temporarily stored through the collecting tank 101, and the wastewater of the collecting tank 101 is transferred to the coagulation reaction tank 102 to react with the chemicals to agglomerate.

The aggregate generated in the flocculation reaction tank 102 is removed by sedimentation in the primary settling tank 103, and the supernatant after the flocculation precipitates is transferred to the aeration tank 104 so that digestion and culture / proliferation by aerobic microorganisms are performed. .

The contaminants adsorbed by the activated sludge produced in the aeration tank 104 are moved to the secondary sedimentation tank 105 to be precipitated and removed, and the sedimentation sludge generated from the first and second sedimentation tanks 103 and 105 is dewatering facility 106. ), And dehydration to reduce the weight and then repeat the process by landfill or incineration.

In such wastewater treatment, the activity of useful microorganisms is increased due to the adsorption and accumulation of activated biodegradable organic matter or organic nitrogen-causing substances into activated sludge without biodegradation due to the biosorption characteristics of microorganisms. If the diagnostic result is markedly reduced or the treatment efficiency is reduced (decreased) or it is determined that there is such a concern, the microorganisms cultured from the microbial culture apparatus 110 associated with the wastewater treatment apparatus 100 are collected in the collecting tank 101 or the aeration tank. It is supplied to (104) to delay or reduce the activity degradation of useful microorganisms due to excessive bioadsorption phenomenon to enable a smooth and efficient wastewater treatment.

Looking at this series of actions,

In the wastewater treatment apparatus 100, the activated sludge having reduced microbial activity (or characteristic enzyme generation ability) is supplied from the collection tank 101 or the aeration tank 104 to the stirring tank 113, and the sludge is supplied to the stirring tank 113. When the growth aid is supplied from the growth aid supply tank 114 and the temperature inside the stirring tank 113 through the heat supply 119 to maintain the temperature appropriate for the saccharification reaction, the stirrer 118 is operated Ensure that the sludge and growth aid are evenly mixed

At this time, in order to recover the activity of the sludge poisoned by the dysfunctional biosorption phenomenon, it is not biodegradable but is adsorbed and accumulated on the sludge (adsorption action is promoted when the acid range is below pH 6). Keep nitrogen in the pH range of about 9 to allow the reaction to proceed in the solubilization direction.

In this case, the supply of the required alkali may be automatically adjusted through the acidity regulator 115 further provided, and when the operation is started as described above, since the recovery of the sludge in which the activity is lowered begins in the stirring vessel 113, You should work on the microscope through the microscopic analysis.

When the sludge and the growth auxiliary agent are evenly mixed in the stirring tank 113 and moved to the aeration tank 121, the oxygen concentration (DO) is maintained at about 0.5 ppm so as to perform full-scale proliferation culture and purification of the microorganisms that have started to recover activity. do.

Prokaryotic microorganisms, aerobic basic microorganisms (Procaryotes), are dominant species in the DO range above, and eukaryotic microorganisms (Eucaryotes type, etc.) are recessive conditions and proliferation culture is inhibited. Due to this, it is to promote the proliferation culture of prokaryotes by interfering with the food chain formation.

Undegraded waste (garbage, etc.) contained in the growth aid in the stirring tank 113 may be a factor of increasing the excess sludge when it is transferred to the wastewater treatment plant as it is, so it is necessary to separate the supernatant with the supernatant. .

Therefore, in order to separate the solid residue, it is necessary to set up the conditions that can be separated by settling by standing still, and to impart this function, it is necessary to block the horizontal vortex due to air aeration.

In order to provide the above function, in the present invention, by installing a sedimentation baffle (120, Baffle) made using a Lock Mat type media, which is a kind of microbial carrier, the vortex phenomenon can be reduced or blocked. .

Precipitating baffle 120 is a plurality of or more, to reduce the vortex by arranging the opening in a lattice shape, the bottom opening in contact with the bottom is properly disposed with the air supply 123, the precipitation baffle by the air lifting (Air Lifting) phenomenon Between the 120 and the sedimentation baffle 120, undecomposed debris expected to be deposited is to be conveyed in the aeration tank 121.

Solids that have been moved without vortices through the settling baffle 120 in the aeration tank 121 sink to the bottom of the settling tank 122, and the remaining supernatant (microorganism) is to be separated to the top of the settling tank 122.

The supernatant separated into the upper part of the settling tank 122 is moved to the microorganism storage tank 125 on the side through the overflowware 124 and stored, and the solids located at the bottom of the settling tank 122 are externally supplied through the sludge processor 126. It is circulated to the stirring vessel 113 in a finely crushed state for discharge or reuse.

Since the microorganisms stored in the microorganism storage tank 125 are grown and cultured, the microorganisms may be directly supplied to the collection tank 101 or the aeration tank 104 constituting the wastewater treatment apparatus 100.

In another example of the present invention, the microorganisms of the microorganism storage tank 125 are supplied to the wastewater treatment apparatus 100, as well as to the denaturation culture unit 130 to increase the proliferation cleavage rate and the enzyme generating capacity by denaturation culture. After the cultivation may be supplied to the stirring tank 113 or the waste water treatment apparatus 100.

The denaturation incubator 130 is installed in the culture tank 131 circulating means 132 so that the microorganism is circulated (flow) through natural monthly flow or forced transfer, and the upper portion of the circulation means 132 It is configured by installing a degeneration-inducing means 133 for inducing degeneration of microorganisms.

The modification inducing means 133 may be implemented in various ways, such as adding a specific chemical to microorganisms or irradiating X-rays, irradiating gamma rays, or irradiating ultraviolet (UV) light as in the present invention. It would be natural to have the necessary means for irradiation, such as a timer for irradiation control, a cover to block external radiation, a lamp, a protective plate, and the like.

Looking at the process of using the denaturation incubator 130, the microorganism in the microorganism storage tank 125 is transferred to the denaturation incubator 130 in a forced manner using a natural oil or a pump.

In the culture tank 131 receiving the microorganisms, it is exposed to the denatured induction means 133 installed above the culture tank 131 while naturally or forcibly transferred using the circulation means 132.

Among the major mechanisms of the reactions involved in biological wastewater treatment, the most important mechanism is actually a biochemical reaction, and ultimately hydrolysis and metabolism occurs by the action of specific enzymes as biocatalysts.

In any case, the microorganisms adsorb organic matters for their proliferation and metabolism, or they adsorb with organic matters, and microorganisms have the property of producing enzymes necessary for themselves.

In particular, if special conditions are created by adding specific chemicals to the basic microbial group, X-ray irradiation, ultraviolet (UV) irradiation, gamma-ray irradiation, etc., microorganisms themselves are mutated (denatured) to cope with such conditions. By increasing the rate of proliferation cleavage or by this phenomenon, the ability to rapidly generate enzymes can maximize wastewater treatment efficiency.

Of course, the denatured cultured microorganisms may be supplied directly to the wastewater treatment apparatus 100 or may be supplied to the agitation tank 113 so that the microorganisms may be subjected to the microbial culture process.

The present invention as described above has the advantage of maximizing the efficiency of wastewater treatment by receiving microorganisms from the microbial culture apparatus associated with the wastewater storage device when the activity of the microorganisms of the wastewater treatment apparatus is reduced.

100; Wastewater Treatment System
101; Sump
104; Abandonment
110; Microbial Culture Device
111; Culture Body
113; Agitator
114; Growth aid supply tank
118; agitator
121; Abandonment
122; Sedimentation tank
125; Microbial Storage Tank
130; Denaturation incubator

Claims (4)

A collection tank for temporarily storing the raw waste water, a chemical flocculation tank for reacting and coagulating the wastewater transferred from the collection tank with a chemical, and a primary precipitation tank for precipitating and removing the aggregates generated in the flocculation reaction tank; Aeration tank for transporting only the supernatant water of the primary settling tank for digestion and culture / proliferation by aerobic microorganisms, and a secondary settling tank for precipitating and removing contaminants adsorbed by activated sludge generated in the aeration tank; Microbial culture that can be supplied to a collection tank or aeration tank of a wastewater treatment apparatus by culturing microorganisms or denatured microorganisms in connection with a wastewater treatment apparatus including a dehydration facility for dewatering and reducing the sedimentation sludge generated from the primary and secondary sedimentation tanks. Providing a device;
The microbial culturing apparatus includes: a stirring tank configured to partition sludge into a culture body and receive sludge having reduced activity from a sump or aeration tank;
A settling baffle installed at a plurality of predetermined intervals in a longitudinal direction on the side of the stirring tank;
An aeration tank provided with an air supply unit so as to maintain a proper dissolved oxygen while preventing the mixture of the sludge supplied from the stirring tank and the growth aid supplied from the mixing tank from being precipitated;
A settling tank partitioned by the settling baffle and moving through the settling baffle to precipitate solids to the bottom to be separated from the microorganisms;
The microbial culture apparatus for wastewater treatment, characterized in that the microbial storage tank is configured to be supplied to the wastewater treatment device while temporarily storing the cultured microorganisms partitioned by the partition wall on the side of the sedimentation tank. The method of claim 1, further comprising:
The agitation tank includes a propagation aid supply tank for supplying a propagation aid used in microbial culture or denaturation culture;
An agitator installed to rotate by the driving means so as to induce a saccharification and digestion reaction by uniformly mixing the supplied sludge and the growth aid;
The microbial culture apparatus for wastewater treatment, characterized in that it further comprises a heat supply so that the growth aid supplied to the stirring tank can maintain the optimum temperature for the saccharification reaction. The method of claim 1, further comprising:
The microbial culture apparatus for wastewater treatment, characterized in that the sedimentation tank is further provided with a sludge treatment unit to prevent reuse of the precipitated solids in the microbial storage tank to be reused or disposed of. The method of claim 1, further comprising:
Further comprising a denaturation incubator for denaturing and culturing the microorganism of the microorganism storage tank to increase the proliferation cleavage rate and the ability to generate enzymes and to supply it to the stirring tank or the wastewater treatment apparatus;
The metamorphic culture unit includes a circulation means for installing the microorganisms in the culture tank so that the microorganisms are circulated through natural monthly flow or forced transport and evenly exposed;
The microbial culture apparatus for wastewater treatment, characterized in that it comprises a denaturation inducing means for inducing denaturation of the microorganism by installing on the circulation means.

Images