KR101849726B1 - Waste water treatment and drain water management system with improved performance - Google Patents

Abstract

A first step of mixing and reacting influent wastewater and effluent water with a microorganism in a biological treatment tank; A second step of introducing a flocculant to induce settlement of the waste; And a third step of treating the filtered water to reduce COD. The present invention relates to a wastewater treatment and drainage management system with enhanced performance, which comprises a Bacillus subtilis DB9011 Bacillus licheniformis strain (microorganism accession number KCCM-11118P) and Bacillus polyfermenticus strain (microorganism accession number KCCM-10104), DB9011 strain (microorganism accession number FERM BP-3418), Bacillus licheniformis strain Can be used to perform a faster purification operation, including a coagulant injection step, has a high treatment efficiency and at the same time has an excellent odor removing effect, and also has an effect of removing Bacillus subtilis DB9011 strain, Bacillus licheniformis strain and Bacillus polyfermenti The content of nitrogen, phosphorus and organic matter can be significantly reduced in an environmentally friendly manner The.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater treatment system and an effluent treatment system,

The present invention relates to a wastewater treatment and drainage management system with improved performance, and more particularly to a Bacillus subtilis DB9011 strain (microorganism deposit number FERM BP-3418), Bacillus licheniformis (KCCM-11118P) and Bacillus polyfermenticus strain (Microorganism Accession No. KCCM-10104), and the treatment efficiency is high including the coagulant addition step At the same time, the filtration balls equipped with Bacillus subtilis DB9011 strain, Bacillus licheniformis strain, and Bacillus polyfermenticus strain were put in, and the contents of nitrogen, phosphorus, and organic matter were remarkably eco-friendly And more particularly, to a wastewater treatment and drainage management system with improved performance that can be reduced.

With increasing concern and need for environmental protection, the importance of water treatment technology to purify contaminated water is also increasing. Water is needed in almost every way from everyday life to a myriad of different processes, so that contaminated water is generated in areas where people live. In particular, in the case of such wastewater generated in everyday life, organic matters such as excrement and food waste are often contained, and it is essential to remove these pollutants and discharge them.

The important point in the recycling of wastewater is that it treats the contents of nitrogen, phosphorus and organic substances in recycled wastewater, turbidity of water, pH and so on to the required level and removes pathogenic microorganisms and treats them to be environmentally stable.

However, it is impossible to remove pollutants contained in wastewater, sewage and wastewater by conventional treatment methods. At this time, untreated organic matter, nutrients and heavy metals are discharged into discharged water to cause eutrophication and water pollution I have to.

When nitrogen or phosphorus generated from agricultural fertilizer, manure or livestock manure or synthetic detergent is introduced into the water system, it causes eutrophication, coastal red tide phenomenon, ammonia fish toxin, and dissolved oxygen deficiency in water. Ammonia increases the demand for chlorine, and when nitrate nitrogen is present in drinking water at a high concentration, it causes diseases such as cyanosis and affects health.

In addition, excessive growth of algae due to the inflow of water sources such as nitrogen and phosphorus may cause discomfort in the taste and smell of tap water, clogging of sand filter paper as a water purification process, and occurrence of toxic substances And it also hinders people's health.

As described above, the influx of nitrogen and phosphorus into the water causes problems such as economic loss due to an increase in the cost of water purification, difficulty in securing safe and clean water resources in public health, and thus, blocking the influx of nutrients into the water Since it is the most fundamental solution, the treatment of nitrogen and phosphorus is emphasized in addition to the removal of organic matter from wastewater.

Several techniques have been proposed for wastewater treatment, and typical examples are as follows.

Korean Patent Laid-Open No. 10-2007-0078033 (Patent Document 1) discloses a method for treating wastewater using an immobilization carrier. Korean Patent Laid-Open Publication No. 10-2010-0049942 (Patent Document 2) discloses a method for treating organic wastewater for minimizing the amount of organic substances and total nitrogen.

The conventional wastewater treatment method has a problem that the purification rate of wastewater is remarkably low and the effect of removing nitrogen, phosphorus and other organic matter is not sufficient.

Korean Patent Publication No. 10-2007-0078033 (published on July 30, 2007) Korean Patent Publication No. 10-2010-0049942 (published on May 13, 2010)

More particularly, the present invention relates to a strain of Bacillus subtilis DB9011 (microorganism deposit number FERM BP-3418), a strain of Bacillus licheniformis (KCCM-11118P) and Bacillus polyfermenticus strain (Microorganism Accession No. KCCM-10104), and it has a high treatment efficiency including a coagulant addition step and excellent odor removal And a filtration ball loaded with a strain of Bacillus subtilis DB9011, a strain of Bacillus licheniformis and a strain of Bacillus polyperimenticus, is added to the microorganism, and the ability to reduce the content of nitrogen, phosphorus and organic substances in an environmentally friendly manner can be remarkably reduced And an object of the present invention is to provide an improved wastewater treatment and drainage water management system.

In order to accomplish the above object, the present invention provides a method for producing a microorganism, comprising: a first step of mixing and reacting influent wastewater and effluent water with a microorganism in a biological treatment tank;

A second step of introducing a flocculant to induce settlement of the waste; And

A third step of treating the filtration balls to induce reduction of chemical oxygen demand (COD);

And a waste water treatment and drainage management system having improved performance.

The microorganism of the first step is selected from the group consisting of Bacillus subtilis DB9011 strain (FERM BP-3418), Bacillus licheniformis strain (Microorganism Accession No. KCCM-11118P) and Bacillus polytilus strain And a strain of Bacillus polyfermenticus (microorganism accession number KCCM-10104).

The second step may further include a pH adjustment process.

Wherein the flocculant in the second stage is selected from the group consisting of 51-56 wt% silicon oxide, 15-18 wt% iron oxide, 10-13 wt% aluminum oxide, 7-12 wt% potassium oxide, 3-6 wt% magnesium oxide, 0.26% by weight and manganese oxide 0.01 to 0.1% by weight.

Wherein the filtration ball of the third stage comprises 40 to 60 wt.% Of peat, 15 to 35 wt.% Of zeolite, 5 to 15 wt.% Of bentonite, 3 to 15 wt.% Of dilite, 3 to 15 wt.% Of rare earth and 0.01 to 5 wt. . ≪ / RTI >

The filtration balls contained Bacillus subtilis DB9011 (Microorganism Accession No. FERM BP-3418), Bacillus licheniformis strain (Microorganism Accession No. KCCM-11118P), and Bacillus polyfermenticus Bacillus polyfermenticus strain (Microorganism Accession No. KCCM-10104).

The feces may be prepared by heating and firing at least one selected from the group consisting of oyster shells, clam shells, general shell shells, and coral mother-of-pearl products.

The rare earth may be at least one selected from the group consisting of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu.

The pH of the second step may be adjusted to a pH of 6.0 to 8.0.

The wastewater treatment and effluent management system with improved performance according to the present invention is characterized in that Bacillus subtilis DB9011 strain (Microorganism Accession No. FERM BP-3418), Bacillus licheniformis strain (Microorganism Accession No. KCCM-11118P) and Bacillus polyfermenticus strain (Microorganism Accession No. KCCM-10104), and it is possible to perform a quicker purification action including a coagulant addition step, a high treatment efficiency and an excellent odor removal effect .

In addition, there is an advantage that the content of nitrogen, phosphorus, and organic matter can be significantly reduced in an environmentally friendly manner by inputting a filtration ball equipped with a strain of Bacillus subtilis DB9011, a strain of Bacillus licheniformis and a strain of Bacillus polyfermenticus.

Figure 1 is a flow chart of a wastewater treatment and effluent management system with improved performance of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail, and a detailed description of known functions and configurations that may unnecessarily obscure the gist of the present invention will be omitted.

In order to accomplish the above object, the present invention provides a method for producing a microorganism, comprising: a first step of mixing and reacting influent wastewater and effluent water with a microorganism in a biological treatment tank;

A second step of introducing a flocculant to induce settlement of the waste; And

A third step of treating the filtration balls to induce reduction of chemical oxygen demand (COD);

And a waste water treatment and drainage management system having improved performance.

The microorganism of the first step is Bacillus subtilis DB9011 Bacillus licheniformis strain (microorganism accession number KCCM-11118P) and Bacillus polyfermenticus strain (microorganism accession number KCCM-10104), DB9011 strain (microorganism accession number FERM BP-3418), Bacillus licheniformis strain And at least one selected from the group consisting of

The Bacillus subtilis DB9011 strain (microorganism deposit number FERM BP-3418) was first found in Japanese Patent Registration No. 3040234, and was a aerobic gram-positive bacterium that formed spores and had a growth range of 15 To 50 ° C, pH 4.0 to 9.0, and 1.2 × 10 ¹⁰ per gram are contained in a size of 1 to 4 μm. In addition, it has a fast growth rate of about 3 × 10 ¹⁴ cells / day and is not killed even in an environment with a chlorine concentration of 200 ppm. In addition, it has a characteristic of causing an odor such as ammonia, hydrogen sulfide and mercaptoethanol as an energy source It is an excellent strain to remove odor which can remove odor at a faster rate than conventional ones because it has a characteristic that the action becomes faster as the contamination degree of water becomes larger.

The above-mentioned Bacillus licheniformis strain (microorganism accession number KCCM-11118P) is a thermophilic Gram-positive bacterium, and the optimum growth temperature may be 50 ° C or higher. In an adverse environmental condition for growth It exists in the form of spores and grows rapidly when favorable conditions exist.

The Bacillus polyfermenticus strain (microorganism accession number KCCM-10104) was a microbial scientist of the Japanese microbiologist Dr. Terakonaga, who was isolated from the air in 1933 and secreted several kinds of enzymes, It has a function of inhibiting proliferation by lysis, and Korean Patent Registration No. 10-0233615 discloses a method for producing this strain.

The Bacillus subtilis DB9011 strain, the Bacillus licheniformis strain, and the Bacillus polyfermenticus strain may be put into a concentration range of 0.2 to 0.5% of the in fl ammatory flotation, and the above conditions do not limit the present invention However, in order to enhance the purification efficiency, it is preferable to carry out in the above-mentioned range.

In the examples of the present invention, the microorganisms are added in powder form, but the scope of the present invention is not limited thereto.

The second step may further include a pH adjustment process.

The specific kind of the pH adjusting agent used in the pH adjusting process is not particularly limited and general means such as NaOH, ionized calcium carbonate (CaO), organic acid such as lactic acid, glacial acetic acid, and malic acid and the like can be used. The amount of the pH adjusting agent to be used is not particularly limited, and may be, for example, an amount such that the pH of the slurry can be maintained within the range of 6.5 to 7.0.

Wherein the flocculant in the second stage is selected from the group consisting of 51-56 wt% silicon oxide, 15-18 wt% iron oxide, 10-13 wt% aluminum oxide, 7-12 wt% potassium oxide, 3-6 wt% magnesium oxide, 0.26% by weight and manganese oxide 0.01 to 0.1% by weight.

The coagulant may be prepared by mixing the components in the above ratio.

The effluent and wastewater that have undergone the second step are induced by the coagulant to cause the wastes such as the refractory material and the micro-solids to settle, thereby facilitating the biological treatment more smoothly.

If the content of the silicon oxide is less than 51% by weight, the adsorption effect is insufficient. When the content is more than 56% by weight, the turbidity of the treated water is increased.

If the content of iron oxide is less than 15% by weight, there is a problem that the adsorption coagulation efficiency is lowered. If the content of iron oxide is more than 18% by weight, the content of other constituents is decreased to deteriorate the performance of the coagulant.

When the content of aluminum oxide is less than 10% by weight, adsorption coagulation efficiency or deodorization efficiency is lowered, and when the content of aluminum oxide is less than 13% by weight, There is a problem that the performance of the coagulant is deteriorated because the content of other constituents is relatively decreased.

If the content of the potassium oxide is less than 7% by weight, the cohesive force may be insufficient. If the content of the potassium oxide exceeds 12% by weight, the effect may be reduced.

When the content of the magnesium oxide is less than 3% by weight, the amount of the magnesium oxide becomes small and the effect of aggregation becomes insignificant. When the content of the magnesium oxide exceeds 6% by weight, the effect is reduced.

The flocculant is characterized by being capable of decomposing and decomposing organic matter including phosphorous pentoxide and manganese oxide and further improving the adsorption efficiency and thereby remarkably reducing the COD. The content of phosphorus pentoxide Is less than 0.04% by weight, the adsorption effect becomes insignificant, the organic compound decomposing ability lowers, and the COD reduction effect becomes insignificant. On the other hand, if it exceeds 0.26% by weight, the effect is reduced to half. In addition, when the content of the oxidizing agent is less than 0.01% by weight, the adsorption effect becomes insignificant, the organic compound decomposing ability is lowered, and the COD reduction effect becomes insufficient. When the content is more than 0.1% by weight, . The phosphorous pentoxide and manganese oxide needles may be used individually. However, the use of the phosphorus pentoxide oxide and the oxidized manganese nitrate can be expected to have an improved effect in terms of water purification effect.

If the content of phosphorus pentoxide is less than 0.04% by weight, the sedimentation rate of the aggregate is reduced. If the content of phosphorus pentoxide is more than 0.26% by weight, the effect is reduced.

If the content of the oxidizing agent is less than 0.01% by weight, the sedimentation rate of the agglomerate tends to decrease. If the content is more than 0.1% by weight, the effect is reduced.

Wherein the filtration ball of the third stage comprises 40 to 60 wt.% Of peat, 15 to 35 wt.% Of zeolite, 5 to 15 wt.% Of bentonite, 3 to 15 wt.% Of dilite, 3 to 15 wt.% Of rare earth and 0.01 to 5 wt. . ≪ / RTI >

( Bacillus subtilis DB9011) strain (Microorganism Accession No. FERM BP-3418) and Bacillus licheniformis strain (Microorganism Depository), which are excellent in water purification ability by using the filtration balls in the third step No. KCCM-11118P) and Bacillus polyfermenticus strain (microorganism accession number KCCM-10104) at a high concentration to promote the decomposition of organic substances and nutrients present in water and to remove nitrogen phosphorus and suspended substances And is not only biocompatible, but also has excellent toxin removal and purification performance, and has an excellent odor removing effect.

More specifically, the filtration balls are formed by mixing the above components into a granule type having a diameter of 5 to 15 mm, naturally drying the same for 3 to 7 days, and then heating the mixture in a temperature range of 850 to 1100 ° C for 3 to 7 hours And then fired. There is no particular limitation on the molding method of the granule type.

In addition, the filtration ball is made of a natural material capable of highly purifying water quality, and is capable of forming a porous microorganism formed by adding nitrogen and phosphorus-removing ingredients and baking at a high temperature. The filtration ball is permanently durable, It is possible to adsorb and decompose organic matter, and it is possible to remove a large amount of phosphorus and nitrogen. The porous structure of the filtration ball is used as a passage or reservoir of air, which ultimately facilitates the activity and growth of the microorganism, thereby providing a good habitat.

In addition, when applied to an existing water treatment facility, the treatment efficiency can be expected to be 3 to 5 times higher than that in the case of not using it, and there is an economical advantage that nitrogen and phosphorus can be removed remarkably without a separate facility.

The filtration balls fired in the temperature range of 850 to 1100 ° C have strong durability and contain various minerals, thereby enhancing the biological activity of the microorganisms and improving the purification efficiency. In addition, since the internal micro space is a good habitat environment for microorganisms, not only excellent treated water quality can be obtained, but also a wide range of specific surface area and volume porosity maintains high microbial concentration with high contact area.

The zeolite is capable of adsorbing other microparticles because the zeolite is loosely bound to each atom in crystal structure, and the moisture filling the spaces between them is released as a high heat, Can be supplied to the microorganism.

When the content of the zeolite is less than 15% by weight, the effect is insignificant. When the content is more than 35% by weight, the effect is reduced.

The filtration ball, which is fired with zeolite as the main component, improves the ammonia adsorption capacity and contains not less than 65 wt% of SiO ₂ as well as purification of organic wastewater, and eliminates the odor component by the exchange of high concentration ammonia nitrogen And has an effect of efficiently removing nitrogen by biological regeneration and has an effect of being directly applicable to existing treatment processes.

When the content of the bentonite is less than 5% by weight, the effect is insignificant. When the content of the bentonite is more than 15% by weight There is a problem that the effect is halved.

As the natural minerals, they weaken the binding force of molecules to form flocs, thereby decomposing and decomposing molecules having a specific gravity to the bottom surface, and playing a role of absorbing and decomposing the repellent ability of harmful bacteria and odor and odor. When the content is less than 3 wt%, there is a problem that the effect is insignificant with a small amount, and when the content is more than 15 wt%, the effect is reduced to half.

If the content of the loess is less than 0.01% by weight, there is a problem that the adsorption coagulation efficiency is lowered. When the content of the loess exceeds 5% by weight, the content of other constituents is decreased to deteriorate the filtering ability of the filtration ball.

The illite is a fine mica-type natural mineral belonging to monoclinic system. The main component is 45 to 74% by weight of silica (SiO ₂ ), 20 to 40% by weight of aluminum oxide (Al ₂ O ₃ ) ₂ O) of 5 to 15 wt%, iron oxide (Fe ₂ O ₃ ) of 0.7 to 4 wt%, and specific gravity of 2.6 to 2.9.

In general, the chemical composition of loess is 45 to 62 wt% of silicon dioxide (SiO ₂ ), 25 to 35 wt% of aluminum oxide (Al ₂ O ₃ ), 6 to 10 wt% of calcium carbonate (CaCO ₃ ) 1 to 3% by weight of magnesium oxide, 1 to 3% by weight of sodium and 1 to 3% by weight of potassium, and the chemical composition may vary depending on the kind of the loess.

The filtration balls contained Bacillus subtilis DB9011 (Microorganism Accession No. FERM BP-3418), Bacillus licheniformis strain (Microorganism Accession No. KCCM-11118P), and Bacillus polyfermenticus Bacillus polyfermenticus strain (Microorganism Accession No. KCCM-10104).

Bacillus subtilis DB9011 strain (Microorganism Accession No. FERM BP-3418), Bacillus licheniformis strain (Microorganism Accession No. KCCM-11118P) and Bacillus polyfermenticus strain (Microorganism Accession No. KCCM-10104) can be prepared by adding the above microorganism into a culture tank, adding a filtration ball, and drying the filtration ball as it is. By using the filtration ball pre-loaded with the microorganisms, it is coated once more at the time of use so that the effect can be maximized.

The feces may be prepared by heating and firing at least one selected from the group consisting of oyster shells, clam shells, general shell shells, and coral mother-of-pearl products.

More specifically, the counterpart may be manufactured by firing at a temperature ranging from 850 to 950 DEG C for 30 to 60 minutes.

If the content of the loquat is less than 40% by weight, there is a problem that the adsorption and flocculation efficiency is poor. When the content of the loquat is more than 60% by weight, there is a problem in that the effect is not large.

The rare earth may be at least one selected from the group consisting of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu.

In the present invention, the rare earth metals decompose and decompose organic substances, and the adsorption efficiency is further improved to significantly reduce the COD. Therefore, the rare earths have a characteristic of exhibiting an improved water purification effect. In the present invention, It is more preferable to use rare earths because it acts as a strong oxidizing agent to decompose the microorganisms and make it difficult to mount microorganisms on the filtered balls.

When the content of the rare earth element is less than 3% by weight, the ability to oxidize and decompose the organic compound is deteriorated and the effect of remarkably reducing COD is insignificant. When the content is more than 15% by weight, Therefore, the manufacturing cost may increase.

In this embodiment, Ce is used as a rare earth, but the scope of the present invention is not limited thereto.

The pH of the second step may be adjusted to a pH of 6.0 to 8.0.

The pH of the wastewater and the drain water is preferably 6.0 to 8.0, more preferably 6.5 to 7.0, and the efficiency of the flocculant is better in the above range.

Hereinafter, the present invention will be described in more detail with reference to examples, but these examples are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

<Experimental Example 1>

Coagulant

The coagulant was prepared by mixing 53 weight% of silicon oxide, 16 weight% of iron oxide, 12 weight% of aluminum oxide, 9 weight% of potassium oxide, 5 weight% of magnesium oxide, 0.15 weight% of phosphorus pentoxide and 0.05 weight% of manganese oxide do. In the present invention, the one purchased from Ace Bio Co., Ltd. was used.

Filtration ball

The filtration balls were formed into a granular type having a diameter of 10 mm by mixing 50% by weight of peat, 25% by weight of zeolite, 10% by weight of bentonite, 5% by weight of ilite, 5% by weight of CeO ₂ and 3% Dried naturally, and then fired at 1000 ° C for 4 hours in a firing furnace. The frying pan was heated at 900 DEG C for 30 to 60 minutes to obtain a fired shell.

Filtration ball with microorganisms

The filtration balls prepared by adding Bacillus subtilis DB9011 strain, Bacillus licheniformis strain and Bacillus polyfermenticus strain were added to the culture tank and dried as it was to prepare filtration balls on which the microorganisms were mounted. The microorganism of the present invention was purchased from Seko Electronics Co., Ltd.

Wastewater treatment and effluent management system

The influent wastewater and effluent were mixed and reacted with Bacillus subtilis DB9011 strain, Bacillus licheniformis strain and Bacillus polyfermenticus strain in a biological treatment tank, and the pH was adjusted to 6.5 To 7.0. Subsequently, sedimentation of the waste was induced by injecting the coagulant, centrifugal separation of the supernatant was performed, and the filtration balls equipped with the microorganisms were treated to induce the reduction of the chemical oxygen demand (COD), and the result was measured 3 days later Table 1 shows the results.

<Experimental Example 2>

The microbes were treated in the same manner as Experimental Example 1 except that the microbes were treated with no filtered microspheres. After 3 days, the results were measured and are shown in Table 1 below.

<Experimental Example 3>

The procedure of Experimental Example 1 was repeated except that the filtered balls prepared by using phosphorus pentoxide oxide and manganese oxide were used instead of CeO ₂ , and the results were measured after 3 days. The results are shown in Table 1 below.

<Experimental Example 4>

The results are shown in Table 3, except that Bacillus subtilis strain DB9011, Bacillus licheniformis strain and Bacillus polyfermenticus strain were not treated in the culture tank. Respectively.

Ammonia and COD of wastewater and effluent treated for 3 days in Experimental Examples 1 to 4 were measured and are shown in Table 1 below.

enemy Experimental Example 1 Experimental Example 2 Experimental Example 3 Experimental Example 4 Ammonia (ppm) 4.0 0.5 1.0   1.7 3.0 COD (ppm) 2,000 700 1,000   1,200 1,900

In Experimental Example 1 in which a filter ball loaded with Bacillus subtilis DB9011 strain, Bacillus licheniformis strain, and Bacillus polyperimenticus strain was treated, compared with Experimental Examples 2 to 4, COD was reduced by more than 65%, and it was confirmed that the purification action at a faster rate was possible, and the sour odor of the treated water completely disappeared, and the odor removal effect was more excellent. Also, after 2 days passed, the filtered ball started to be visible, and on the third day, the filtration ball was clearly visible and the water became clear.

Accordingly, the present invention provides a method for producing a fermentation broth comprising a Bacillus subtilis DB9011 strain, a Bacillus licheniformis strain and a Bacillus polyfermenticus strain, And that it can be improved more quickly.

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 inventive concept as defined by the appended claims. It will be possible. The scope of the present invention is defined by the appended claims, and all differences within the scope of the claims are to be construed as being included in the present invention.

Claims (9)

A first step of mixing and reacting influent wastewater and effluent water with a microorganism in a biological treatment tank;
A second step of introducing a flocculant to induce settlement of the waste; And
A filter ball containing 40 to 60% by weight of peat, 15 to 35% by weight of zeolite, 5 to 15% by weight of bentonite, 3 to 15% by weight of iridite, 3 to 15% by weight of rare earth and 0.01 to 5% And a third step of inducing the reduction of the chemical oxygen demand (COD) of the wastewater. The method according to claim 1,
The microorganism of the first step is selected from the group consisting of Bacillus subtilis DB9011 strain (FERM BP-3418), Bacillus licheniformis strain (Microorganism Accession No. KCCM-11118P) and Bacillus polytilus strain Wherein the microorganism is at least one selected from the group consisting of Bacillus polyfermenticus strain (Microorganism Accession No. KCCM-10104). The method according to claim 1,
Wherein the second step further comprises a pH adjustment step. &Lt; RTI ID = 0.0 &gt; 11. &lt; / RTI &gt; The method according to claim 1,
Wherein the flocculant in the second stage is selected from the group consisting of 51-56 wt% silicon oxide, 15-18 wt% iron oxide, 10-13 wt% aluminum oxide, 7-12 wt% potassium oxide, 3-6 wt% magnesium oxide, 0.26 wt% and manganese oxide 0.01-0.1 wt%. &Lt; Desc / Clms Page number 13 &gt; delete The method according to claim 1,
The filtration balls contained Bacillus subtilis DB9011 (Microorganism Accession No. FERM BP-3418), Bacillus licheniformis strain (Microorganism Accession No. KCCM-11118P), and Bacillus polyfermenticus Bacillus polyfermenticus strain (Microorganism Accession No. KCCM-10104). The system according to claim 1 or 2, wherein at least one selected from the group consisting of Bacillus polyfermenticus ( Bacillus polyfermenticus ) strain (Microorganism Accession No. KCCM-10104) The method according to claim 1,
Wherein the tofu is manufactured by heating and firing at least one selected from the group consisting of oyster shells, clam shells, general shell shells, and coral mother-of-pearl products. The method according to claim 1,
Wherein the rare earths are at least one or more selected from the group consisting of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. Treatment and effluent management system. The method of claim 3,
Wherein the pH is in the range of 6.0 to 8.0 during the pH adjustment process.

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