KR101178578B1 - Composites for elimination of green algae and red algae using the effect of nitrogen and phosphorus eliminating and it's method - Google Patents

Abstract

PURPOSE: A composition for eliminating algae by removing nitrogen and phosphorus is provided to suppress microorganism proliferation and to remove odor. CONSTITUTION: A composition for eliminating algae through removing nitrogen and phosphorus contains: 100 parts by weight of excipient containing one or more among zeolite, sawdust, and activated charcoal; 10-30 parts by weight of liquid microorganisms containing phototrophic bacteria, Lactobacillus sp., Bacillus sp., yeast, Pseudomonas sp., Nitrosomonas sp., and Nitrobacter sp. in a same ratio; and synthetic peroxide.

Description

Composition for Elimination of Green Algae and Red Algae Using The Effect Of Nitrogen And Phosphorus Eliminating And It's Method

The present invention relates to an algae removal composition through nitrogen and phosphorus removal for nitrogen, phosphorus removal, organic matter decomposition, dissolved oxygen supply, nutrient removal and quality improvement effect, more specifically one or two or more of zeolite, sawdust, activated carbon It is prepared by mixing the powdered microorganism and 10 to 30 parts by weight of the liquid microorganism immobilized with 100 parts by weight of the excipient mixed with a synthetic peroxide.

The demand for coastal development and the constant increase in marine pollutant loads have limited the capacity of the coastal waters to cope with such problems. In order to minimize the damage by taking urgent shipments, the company is suffering more than tens of billions of won every year due to the massive red tide. In addition, a large number of green algae are generated in various rivers and lakes due to the influx of various pollutants, which causes clogging of the filtration device of the water treatment facility or the suffocation of fish and shellfish due to the depletion of dissolved oxygen.

As a countermeasure to remove pollutants in the appeal, the treatment of natural materials and various medicines is very limited, and there are not many examples of application of the method. It is a method that is applied to sediment coating, that is, the sediment is coated with materials such as sand and slag to prevent the elution of nutrients, etc. It is used only in part due to problems such as re-deposition prevention. The most widely used method is the flocculation sedimentation method, which is a method of precipitating and removing suspended particles (SS) and soluble phosphorus by adding flocculant (Fe salt, Al salt), Lime, etc. It is widely used and it is reported that the water treatment efficiency shows the removal efficiency of BOD 40 ~ 60%, SS 80 ~ 95%, TP 90%, but the efficiency varies depending on the type of flocculant, the input amount and the input frequency. It is effective in the case of high saturation, simultaneous removal of SS and nutrients, and high effect of nutrient elution from water on sediment. However, this process requires treatment of sediment sludge, pH adjustment, and a review of the impact on aquatic environment and benthic organisms. Therefore, in order to introduce water quality and low quality improvement agent as an in-house countermeasure against water pollution sources, the water quality improvement effect is high, especially the removal effect of COD, TN, TP is high, and the preparation itself is harmless to aquatic organisms and does not cause secondary pollution. Short-term and long-term easy maintenance and construction methods are essential.

In the prior art, Korean Patent No. 10-0420253, "Ocher-carpox fiber composite for removing green algae or red tide, and a method for preparing the same" is used to prepare an ocher-carpok fiber composite for removing algae or red tide prepared by mixing ocher powder and kapok fiber. Although a method of removing green algae or red algae has been invented, it is uneconomical to use a large amount of ocher powder, and the ocher spreading method has only a temporary effect, and thus cannot remove green algae and red algae organisms continuously and in the long term. There is a problem, rather than polluting the environment of the seabed due to the large amount of loess spreading, moreover, when the loess is sprayed mucus formed of loess fine particles and acidic low-grade soils cause marine life causes physiological disorders or death. There is such a problem.

KR 10-0420253 C0 (2004.02.13)

The present invention has been invented to solve the problems as described above, the object of which is harmless to fish and aquatic, while blocking the nitrogen and phosphorus component of the water quality to inhibit the growth of microorganisms, improve the water quality (BOD, COD reduction ), Low quality improvement (decomposition of sediment organic matter, removal of ammonia, nitrite), removal of fish and odor (ammonia, hydrogen sulfide) odor, removal of green algae and red tide microorganisms in small amounts (1/50 of yellow soil disaster prevention).

Algae removal composition through nitrogen and phosphorus removal according to the present invention for achieving the above object is a powder in which 10 to 30 parts by weight of liquid microorganisms is immobilized on 100 parts by weight of an excipient mixed with one or two or more of zeolite, sawdust, activated carbon It is characterized by being prepared by mixing a microorganism and a synthetic peroxide.

In addition, the liquid microorganism, photosynthetic bacteria (Phototrophic bacteria), Lactobacillus genus (Lactobacillus sp), Bacillus (Bacillus sp.), Yeast myogyun (Yeast), Pseudomonas species (Pseudomonas sp.), Nitro consumption eggplant in (Nitrosomonas sp .), Nitrobacter sp .

In addition, the synthetic peroxide, a metal peroxide,

In the metal peroxide, the metal may be used by mixing one or two or more of alkali metal, alkaline earth metal, silicon, aluminum, magnesium, and calcium.

In addition, the powder microorganism and the synthetic peroxide are characterized in that the mixture in a ratio of 1: 0.5 to 1.5 by weight.

In addition, the algae removal composition through the nitrogen and phosphorus removal prepared by the above method is characterized in that it is used to put into the river and appeal 5 ~ 40mg / L.

Algae removal composition through the removal of nitrogen and phosphorus according to the present invention is completely harmless to fish and aquatic life, and can inhibit the growth of microorganisms by blocking nitrogen and phosphorus components of the water, improving water quality and decomposition of organic matter, removal of ammonia, nitrite Improve the quality of the back, and has the effect of removing fish and odor (ammonia, hydrogen sulfide) smell.

In addition, the use of one-fifth of the amount of existing yellow earth disaster prevention, there is an economical cost reduction effect that can smoothly remove the green algae and red tide microorganisms.

The present invention relates to a composition for removing algae through nitrogen and phosphorus removal for nitrogen, phosphorus removal, organic matter decomposition, dissolved oxygen supply, nutrient removal and low quality improvement.

Zeolite, sawdust, powdered microorganisms immobilized 10-30 parts by weight of liquid microorganisms to 100 parts by weight of an excipient mixed with two or more of the activated carbon, characterized in that it is prepared by mixing a synthetic peroxide.

The excipient is to use one or two or more of zeolite, sawdust, activated carbon as a carrier to smoothly adsorb the liquid microorganism so that it can be easily utilized in the appeal.

Here, the zeolite is also referred to as zeolite, a hydrous aluminum silicate mineral mainly containing alkali metal or alkaline earth metal. The presence of a gap is more than 0.6 mm in diameter, and the gap has a molecular sieve function and zeolite can adsorb a large amount of liquid. In addition, the zeolite itself has a molecular sieve characteristic of adsorbing a certain size particles by a three-dimensional net structure, as well as a large base substitution capacity, cation exchange capacity using this to remove soil improver, adsorbent, ammonia nitrogen , Heavy metal ion adsorbent, dyeing wastewater decolorization, softening of hard water, etc.

Therefore, the zeolite can be used as it is,

It can be used as a zeolite ball having a porous formability by firing it using a natural material zeolite, and when used as the zeolite ball, the zeolite ball by particle size having a predetermined strength or more that can be used semi-permanently by firing the zeolite at 800 ° C. Can be used.

In addition, the sawdust refers to a powder that is swept away from the tree when the sawdust is turned or cut, the activated carbon is a carbonaceous material of the majority of the constituents, strong adsorption, absorbs gas or moisture as an adsorbent, is also used as a bleaching agent Wood, lignite, etc. are manufactured by treatment with a chemical such as zinc chloride and dried.

And, the liquid microorganism,

Photostrophic bacteria, Lactobacillus sp, Bacillus sp., Yeast, Pseudomonas sp ., Nitrosomonas sp ., Nitrobacterus genus Nitrobacter sp .

Here, the phototrophic bacteria are microorganisms of 1 × 10 ⁸ cfu / g or more, decompose organic matter in water and assimilate it into cell constituents, and remove the genus Lactobacillus. sp ) is Bacillus genus ( Bacillus Bacillus) is a bacterium that controls the pathogenic Gram-negative bacteria by producing Lactobacillin at 1 × 10 ⁸ cfu / g sp .) is a microorganism having a multiple enzyme system with a microorganism number of 1 × 10 ⁹ cfu / g or more and decomposes proteins, carbohydrates and lipids. The yeast is a microorganism with a number of microorganisms of 1 × 10 ⁸ cfu / g or more. Removes lipid components present in the genus Pseudomonas sp .) is a microorganism number of 1 × 10 ⁸ cfu / g or more to remove the nitrate, nitrite nitrogen and phosphorus removal, the nitrosomonas genus ( Nitrosomonas sp .) is a microbial number of 1 × 10 ⁸ cfu / g or more by oxidizing and removing ammonia in water, the nitrobacter genus ( Nitrobacter sp .) functions to oxidize and remove nitrous nitrogen in water by nitrate nitrogen with a microbial count of 1 × 10 ⁸ cfu / g or more.

Therefore, the above-mentioned microorganisms are used appropriately according to the influx of contaminated water to purify various pollutants.

In addition, the powdered microorganism is immobilized 10-30 parts by weight of the liquid microorganism to 100 parts by weight of an excipient mixed with one or two or more of zeolite, sawdust, activated carbon, excipient mixed with one or two or more of the zeolite, sawdust, activated carbon By immobilizing the microorganisms in the liquid, microorganisms were used to improve the water environment. In particular, the zeolite plays a role in protecting and supporting the microorganisms, thereby greatly improving the efficiency and duration of water improvement. have.

In addition, various water purification microorganisms fixed in excipients installed in the lake maintain activity in the immobilized excipients, and if there are contaminants around them, they gradually escape from the excipients and purify the water quality, as well as the odor components in the appeal (ammonia, Hydrogen sulfide, etc.) and decompose pollutants, the microorganisms used in the present invention do not lose their microbial activity regardless of the presence of dissolved oxygen. It serves to decompose.

The reason why the microorganisms were not utilized for the purification of the conventional art has the problems of the economic burden of adding a large number of microorganisms to obtain a purification effect and difficulty in maintaining and managing the microorganisms. Since microorganisms contain high concentrations of microorganisms of 10 ⁹ cfu per gram, they not only reduce the economic burden, but also have various advantages in improving, maintaining and managing water quality.

In addition, water purification mechanisms by excipients and biological treatment are as follows.

Organic matter removal by microorganisms has the principle that organic matter in water is removed through the process of metabolism and microbial synthesis of microorganisms in the presence of oxygen in the water. The concept of aerobic organic matter removal process can be expressed in three simple stoichiometries: substrate oxidation, microbial synthesis, and assetization.

Substrate Oxidation:

                              Enzymes

CxHyOz + (x-1 / 4y-1 / 2z) O ₂ → xCO ₂ + 1 / 2yH ₂ O + H ------ (1)

Microbial Synthesis:

                                          Enzymes

n (CxHyOz) + nNH ₃ + n (x-1 / 4y-1 / 2z -5) O ₂ → (C ₅ H ₇ O ₂ N) _n + n (x-5) CO ₂ + n / 2 (y H ₂ O + H ----- (2)

Respiration in the asset stage:

              Enzymes

(C ₅ H ₇ O ₂ N) _n + 5nO ₂ → 5 nCO ₂ + nH ₂ O-nNH ₃ + H ----- (3)

1) Carbon and Energy Sources

Carbon sources necessary for the cell formation of microorganisms are largely organic matter and CO ₂ . Microbial species that use organic matter as carbon and energy sources are called heterotrophs, and species that oxidize minerals to obtain carbon sources and energy from CO ₂ are called autotrophic microorganisms. The conversion of CO ₂ to organic cell membranes is a reduction process and requires energy. Autotrophic microbes therefore consume more of their own energy in synthesis than heterotrophic microbes, resulting in lower growth rates.

2) Microbial Intake and Treatment Process

Biological treatment is the removal of biodegradable organic matter from organic matter present in water using microorganisms. The organic matter is oxidized to produce CO ₂ or H ₂ O, and the rest of the microorganisms are synthesized in the cell to process the organic matter. Heterotrophic microorganisms are of paramount importance in organic processing as carbon and energy sources. On the other hand, autotrophic microorganisms are important in processing processes involving nitrification.

3) microbial metabolism

Microorganisms can be classified into dependent microorganisms and independent microorganisms according to their metabolic forms and the molecular oxygen forms required for metabolism. Respiratory metabolism is the process by which enzyme transfer electrons are transferred from an electron acceptor to an external electron acceptor to generate energy. In contrast, fermentative metabolism does not include the involvement of external electron acceptors. Fermentation is less efficient in the energy growth process than breathing. Therefore, heterotrophic microorganisms fermentable show lower growth rate and cell growth than respiratory heterotrophs.

The use of molecular oxygen as the electron acceptor in respiratory metabolism is called aerobic respiratory processes, and microorganisms requiring such respiratory processes are called aerobic microbes. In the absence of molecular oxygen, some respiratory microorganisms use oxidized inorganic compounds such as nitrite (NO ₂ -N) or nitrate (NO ₃ -N) as electron solubles.

4) general formula for microbial growth

If the hydrolysis of microorganisms can be ignored, the only use of the substrate is microbial growth. Thus, if the stoichiometric formula for microbial growth is written primarily on a substrate, the microbial stoichiometric constant will be the net growth yield of the microorganism. This can be written as:

Carbon source + energy source + electron aceptor + nutrients

→ biomass + CO ₂ + reduced acceptor + end products

For modeling material balances, the same type of quantitative formula should be available for any situation, whether carbon or energy, or electron acceptor, and all non-photosynthetic microbial growth reactions have two components, By energy and by energy. Carbon in the synthetic components terminates in microorganisms. On the other hand, carbon associated with an energy component is CO ₂ . This reaction is an oxidation-reduction reaction and therefore involves electron conversion from the recipient to the receptor. In the growth of heterotrophic microorganisms, the electron acceptor is the organic substrate, while in the growth of autotrophic microorganisms it is an inorganic component.

In the removal of nitrogen and phosphorus by microorganisms, ammonium ions in sewage are converted to nitrate and nitrite ions under aerobic conditions and then denitrification occurs under anaerobic conditions, whereby nitrate and nitrite ions are reduced to nitrogen gas. Is done.

1) biological nitrification

Ammonia in water is converted to nitrate through nitrification. Nitrification has the effect of reducing the toxicity and NBOD of ammonia. Nitrification takes place in two stages of reaction:

Stage 1

                  Nitrosomonas (ammonia oxidizing bacteria)

^{_{NH 4 + + 3 / 2O 2}} -------------------> NO 2 - + 2H + + H 2 O --- (4)

Step 2

                      Nitrobacter (nitrite oxidizing bacteria)

NO ₂ ^- + 1 / 2O _{2 ^{-------------------> NO 3 - --- (5}} )

Nitrosomonas and Nitrobacter, which are involved in nitrification, are autotrophic microorganisms that gain energy and utilize inorganic carbon CO ₂ during the oxidation process. The overall result of the above equation is shown in Equation 6 below.

NH ₄ ⁺ + 3 / 2O _{2 ^{-------> NO 3 - + 2H +}} + H 2 O --- (6)

The oxidation of ammonia requires 4.57mO ₂ / mgNH ₃ -N, as shown in equation 6. This is considerably greater than 2.67, which is required for carbon to oxidize.

2) biological denitrification

The nitrification process converts ammonia into nitrate ions, which can be avoided. However, nitrogen is still present in water, causing other damage. Nitrate ion (NO ₃ ^-) form of the nitrogen component is a cause of eutrophication in the water can be used as a nutrient source for microorganisms. There are so-called denitrification bacteria ( Pseudomonas , Micrococcus , Achromobacter, Bacillus, etc.) that use NO ₃ ⁻ as an electron acceptor in anoxic environment. The denitrification reaction occurs as follows.

_{^{NO 3 - -------> NO 2 -}} -------> N 2 ---- (7)

The nitrate ion is finally converted to nitrogen gas and released into the atmosphere, so the removal of nitrogen from the wastewater or soil is completed. In reality, not all nitrogen components are gasified, and some are used to propagate related microorganisms. In the experiment using methanol as a carbon source, the following empirical formula is obtained.

^{_{NO 3 - + 1.08CH 3 OH +}} H + → 0.065C 5 H 7 O 2 N + 0.47N 2 + 0.76CO 2 + 2.447H 2 O - (8)

As in the above formula, a separate carbon source may be supplied or undigested organic material in water may be used.

3) Biological Phosphorus Removal

The mineralization process for organics is:

                                          Enzymes

Organophosphorus compounds (nucleic acid, phospholipids, etc.) ㅡ ㅡ ㅡ ㅡ ㅡ ㅡ → orthophosphate (PO ⁴ )

                              Bacteria (B. subtilis, Arthrobacter)

                              Streptomyces

                              Fungi (Aspergillus, Penicillium)

Phosphorus content in microbial cells is about one fifth of that of nitrogen. Proper placement of biological processes for the purpose of phosphorus removal may further promote cell uptake. To promote phosphorus removal, microorganisms are alternately exposed to anaerobic (small release of inorganic phosphates) and aerobic environments (large absorption of inorganic phosphates). This stress causes the microbes to absorb large amounts of phosphorus. Polyphosphate bacteria (Acinetobacter, Pseudomonas, Aerobacter, Moraxella, E. coli, Mycobacterium, Beggiatoa) have the ability to accumulate more than the normal requirement of 1 to 3% of the dry weight of cells.

And, the synthetic peroxide,

Metal peroxides are used, and the metals in the metal peroxides are used in combination with one or two or more of alkali metals, alkaline earth metals, silicon, aluminum, magnesium, calcium.

The metal peroxide is a product of a redox reaction resulting from the synthesis of a peroxide by mixing one or two of metal oxides and metal hydroxides.

The peroxide may be one of hydrogen peroxide, organic acid, inorganic acid.

In addition, the synthetic peroxide is in powder form.

When used in the lake, the synthetic peroxide does not harm coastal organisms, and it is possible to prevent a large amount of fish deaths that may occur when green algae and red tide occur through the increase of dissolved oxygen, block nutrient cause phosphorus, and It can be improved.

In addition, a coagulant may be further mixed with the synthetic peroxide.

Here, the use of a coagulant further mixed with the synthetic peroxide is used to agglomerate and precipitate the basic red tide and green algae microorganisms, and the coagulant metal ion cations react with phosphorus in water to block the nutrients of the green algae and red tide microorganisms, and occur during the reaction. This is to perform pH adjustment function in water due to the hydrogen ion.

The coagulant is generally used in the art, and is not limited thereto, but one or two or more of aluminum sulfate, ferrous sulfate, ferric sulfate, ferrous chloride, ferric chloride, PAC, and polymer coagulant It is preferable to mix and use.

The polymer flocculant includes a cationic or anionic flocculant, for example, polyacrylate, sodium polyacrylate, and the like.

Here, when mixing a coagulant with the said synthetic peroxide, 10-40 weight part of a coagulant is mixed with 100 weight part of said synthetic peroxides.

If the coagulant is mixed in an amount less than 10 parts by weight to 100 parts by weight of the synthetic peroxide, the characteristics of the coagulant, that is, the coagulation precipitation function of the green algae and the red tide microorganisms and the pH adjusting function thereof may be lowered. When more than 40 parts by weight of the flocculant is mixed at 100 parts by weight, the properties of the synthetic peroxide, that is, the addition of such characteristics, such as increased dissolved oxygen, are insignificant, and depending on the flocculant, the pH may be lowered and acidified.

In addition, ocher may be further mixed with the synthetic peroxide.

The ocher is an economical material that processes existing green algae and red tide microorganisms, and is used as an agent for controlling or improving the quality of freshwater algae red algae and marine flagella algae red tide. When dissolved in seawater, aluminum ions are eluted to act to adsorb and aggregate red tide cells.

Here, when mixing the ocher to the synthetic peroxide is to mix 10 to 30 parts by weight to 100 parts by weight of the ocher peroxide.

If, when mixed with less than 10 parts by weight of ocher to 100 parts by weight of the synthetic peroxide, the expression of the addition properties of the loess may be insignificant, when mixing more than 30 parts by weight of ocher to 100 parts by weight of the synthetic peroxide In the synthesis of the peroxide, that is, the expression of its addition properties, such as increased dissolved oxygen is insignificant, the pH can be acidified, and the effect of improving the quality can be reduced.

The water purification mechanism by synthetic peroxide is as follows.

1) the role of Ca ^{2 +} and Mg ^{2 +} in an alkaline-based

Synthetic peroxide, which is a water quality and quality improvement agent, is a composite powder material containing Ca and Mg peroxide, hydroxide, and oxide, and Al powder, which also has agglomeration function, and used to purify water contaminants and low layers (sediments). In the weak alkali system, the addition of synthetic peroxides causes chemical reactions between natural compounds as well as an increase in pH and calcium ion concentration. Thus, the equilibrium state of the CO ₂ -HCO ₃ ^-- CO ₃ ^{2 -} system is highly dependent on the pH. Above pH 8.3, with increasing pH, HCO ₃ ⁻ decreases, CO ₃ ⁻ increases, and occurs generally in alkaline water systems. This reaction is as follows.

_{^{HCO 3 - + OH - ↔ CO}} 3 2 - + H 2 O

Mg ^{2 +} + 2OH ^- ↔ Mg (OH) ₂

Mg ^{2 +} + CO ₃ ^{2 -} ↔ MgCO ₃

Ca ^{2 +} + CO ₃ ^{2 -} ↔ CaCO ₃

Ca ^{2 +} + 2OH ^- ↔ Ca (OH) ₂

In the alkaline system, chemical species dissolved in water are determined by the properties of the compounds produced by the above reaction. The solubility of these compounds is shown in the table.

 Solubility of alkalis in water Compound Solubility in water (g / L) Ca (OH) ₂ 1.85 CaCO ₃ 0.014 Mg (OH) ₂ 0.009 MgCO ₃ 0.106

As can be seen from Table 1, it can be seen that a relatively large amount of CaCO ₃ and Mg (OH) ₂ is present as a precipitate. Accordingly, these compounds are hydrogen sulfide generated in the nutrients and oxygen-free conditions that are eluted at a low quality if present in water can be suppressed. The reaction is in this removed in complexes form by the CaCO ₃ CaCO ₃ and Mg (OH ₂ ) This precipitates on the surface of the sediment and forms a film that reduces phosphorus elution. Mg (OH) also covers the deposit surface for a long time and inhibits the action of sulfate reducing bacteria.

2) Nitrogen (N) and phosphorus (P)

The cause of eutrophication, such as algae overgrowth in algae, is closely related to the concentrations of nutrients such as nitrogen and phosphorus. The amount of nutrients continuously influenced by the externally introduced amount is important, but the amount accumulated in the sediment and eluted from the sediment due to the change of environmental conditions cannot be ignored. In case of phosphorus, the oxygen consumption of organic matter increases as time goes by in the lower part of the water, and the oxidation and reduction value of the sediment decreases as it proceeds to anaerobic state. It can be said that phosphorus is eluted when ions break the bond with phosphorus in the reduced state. Therefore, the removal of phosphorus by synthetic peroxide is quite effective in improving this situation. Generally, Ca ₅ OH (PO ₄ ) ₃ is formed and precipitated by the reaction between calcium ions of peracid and phosphate ions in water, so phosphorus is fixed and removed, but when pH is 9 or more, phosphorus is fixed by the following reaction Progresses rapidly.

^{2 + 2} + ₄ 3HPO 5Ca ^- + 4OH ^- OH ↔ Ca ₅ (PO _{4) 3} + 3H ₂ O

^{2 + 2} + ₄ 3HPO 5Ca ^- + 7OH ^- OH ↔ Ca ₅ (PO _{4) 3} + 6H ₂ O

In addition, dissolved phosphorus may be adsorbed and removed from the surface of Ca (OH) ₂ and Mg (OH) ₂ . Since phosphorus acts as a limiting factor in eutrophication such as green algae, phosphorus removal is an important factor in the prevention of eutrophication. On the other hand, ammonia nitrogen eluted by decomposition of organic matter in the sediment is converted to nitrogen nitrate by dissolved oxygen. However, when dissolved oxygen in water is consumed, it is dissolved in ammonia nitrogen state. This nitrogen in water is mostly dissolved as ammonia gas, which is toxic to ammonia ions or fish. The reaction below equilibrates between pH 7 and pH 12, and shifts to the right side at higher pH. Therefore, it is preferable to properly adjust the pH in order to prevent eutrophication, and to maintain an appropriate pH through neutralizing agents such as lime and Mg (OH) ₂ , including the fixing of phosphorus.

NH ₄ ⁺ → NH ₃ + H ⁺

3) Suppression of Sulfate Reducing Bacteria

The effect of spraying synthetic peroxide, which is a water quality and quality improvement agent, is continuously inhibited by the active help of sulfate reducing bacteria and prevents the occurrence of hydrogen sulfide. Anaerobic sulfur bacteria do not grow in oxygen-dissolved water, but they dissolve sulfates in seawater and use the combined oxygen for breathing or breeding. Hydrolysis in seawater without dissolved oxygen consumes oxygen in the following reactions: Done.

MgSO ₄ + 2H ₂ O ↔ Mg (OH) ₂ + H ₂ S + ₂ O ₂

In the reaction scheme above, when Mg (OH) ₂ is present in the water excessively, the reaction proceeds to the left, and it can be expected that generation of hydrogen sulfide (H ₂ S) is suppressed. Sulfur ions present in the environment are sulfates (SO ₄ ^{2 −} ) in the water, which are present as stable compounds by reacting with iron salts in sediments or accumulating as amino acids containing sulfur in organisms. The amount of sulfate-reducing bacteria is lower than that of sulfur-containing proteolytic bacteria, but sulfate-reducing bacteria play a major role in the production of hydrogen sulfide in sulphate-rich areas such as sea areas. The main energy sources of sulfate reducing bacteria are lower fatty acids such as lactic acid, propionic acid and acetic acid produced during anaerobic decomposition. Therefore, when anoxic condition occurs, hydrogen sulfide produced by sulfate reducing bacterium reacts with iron salt in the sediment and finally forms FeS ₂ to be stored in the sediment. The organic matter is decomposed by sulphate reduction, so that ammonia and phosphate accumulate and promote elution. . Hydrogen sulfide dissolved in water is toxic to fish and shellfish at pH 7 and below. Sulfate-reducing bacteria can grow in neutral regions of pH 6.5-7.5, but cannot survive in alkaline environments above pH 8.5. However, in the case of water contaminated with various organic substances, organic acids are produced by oxidative decomposition of low-level organic substances by aerobic bacteria, and thus, the pH is lowered. As a result, deterioration of water quality due to oxygen deficiency multiplies these bacteria and generates hydrogen sulfide. do. Therefore, when artificially raising the pH of the seabed sediment, it is possible to prevent the generation of hydrogen sulfide as the environment is created to suppress the growth of sulfate reducing bacteria.

4) Pollution Reduction Mechanism

Hydrogen sulfide and phosphate are eluted into the water column through the following reactions in the sedimentary layer, which is a highly polluted anoxic environment.

Al (PO ₄ ) → Al ₃ (PO ₄ ) ₂ (1)

_{^{SO 4 2 - → S 2 -}} (2)

_{Mg 3 (PO 4) 2 +} S 2 - → 3MgS + 2PO ₄ ^{3 - (3)}

However, metal components such as Ca, Mg, and Al in the synthetic peroxides, which are water and poor quality improvers, form sulfides to inhibit hydrogen sulfide leaching (reaction 4). Done.

(Ca, Mg, Al) + S 2 - → CaS, MgS, Al 2 S 3 (4)

In addition, the calcium component (Free CaO, CaO _2, etc.) present in the synthetic peroxide, which is a water quality and quality improvement agent, reacts with the phosphate present in the aqueous layer to form a poorly soluble hydroxide apatite as follows. Therefore, it is possible to suppress an increase in the aqueous dissolved concentration of phosphate eluted from the sedimentation layer through this reaction.

_{^{5Ca 2 + + 3HPO 4 2 -}} + 4OH - ↔ Ca 5 OH (PO 4) 3 + 3H 2 O (5)

On the other hand, the concentration of phosphate and hydrogen sulfide in the upper bottom seawater can be explained by the following reactions by synthetic peroxides, which are water quality and quality improvement agents. First, the removal of phosphate by metal ions is possible through the following reaction. .

_{^{Al 3 + + PO 4 3 -}} → AlPO 4 (6)

_{^{3Mg 2 + + 2PO 4 3 -}} → Mg 3 (PO 4) 2 (7)

In addition to the above reaction (5), calcium ions liberated from synthetic peroxides, which are water and poor quality improvers, can also remove phosphates through the following reactions.

_{^{Ca 2 + + HPO 4 2 -}} → CaHPO 4 ↓

          (Calcium hydrogen phosphate) (8)

^{_{Ca 2 + + 2H 2 PO 4}} - → Ca (H 2 PO 4) 2 ↓

                 (Calcium Yahydrogen phosphate) (9)

_{^{Ca 2 + + 2PO 4 3 -}} → Ca 3 (PO 4) 2 ↓

                  (β-Tricalcium phosphate) (10)

Hydrogen sulfide (H ₂ S) generated from the contaminated reservoir is removed as a solid form of the metal sulfide by reacting with the metal component as follows and only the sulfur component is released and no longer shows detoxification effect. In sediment with severe contamination, organic matter decomposition shows low value before and after pH 6 and most of sulfides take H ₂ S form, and synthetic peroxide which is water and quality improvement agent is administered by administering synthetic peroxide which is water and quality improvement agent. The H ₂ S in the contaminated deposits with the metal components in it can be reduced through the following reaction.

2M (OH) ₃ + 3H ₂ S → 2MS ↓ + S + 6H ₂ O (11)

2M (OH) ₃ + H ₂ S → 2M (OH) ₂ + S + 2H ₂ O (12)

M (OH) ₂ + H ₂ S → MS ↓ + 2H ₂ O (13)

In this case, the powdered microorganism and the synthetic peroxide are mixed at a ratio of 1: 0.5 to 1.5 by weight according to the influx of contaminated water, and the nitrogen microorganism and the organic decomposition function of the powder microorganism and phosphorus removal of the synthetic peroxide The purpose is to purify pollutants through functions such as studying dissolved oxygen and improving quality.

Algae removal composition through the removal of nitrogen and phosphorus prepared by the above method can be used in 5 to 40mg / L in rivers and lakes.

5 to 40 mg / L of the algae removal composition through the nitrogen and phosphorus removal in rivers and lakes is because the algae and red tide microorganisms can be removed with a small amount.

Hereinafter, the present invention will be described more specifically by way of examples. It will be apparent to those skilled in the art, however, that the following examples are illustrative of the present invention only and do not limit the scope of the present invention. That is, a simple modification or change of the present invention can be easily performed by those skilled in the art, and all such modifications and alterations can be considered to be included in the scope of the present invention.

Example: Algae removal composition through nitrogen and phosphorus removal according to the present invention

Liquid microbial zeolite to 100kg (photosynthetic bacteria (Phototrophic bacteria), genus Lactobacillus (Lactobacillus sp), Bacillus (Bacillus sp .), Yeast, Pseudomonas sp .), Nitrosomonas sp ., Nitrobacter sp . immobilize sp .) in equal proportions.

It is prepared by mixing 50 kg of the immobilized powder microorganism and 50 kg of synthetic peroxide.

Experiment 1: Green Algae Removal Effect

40 ppm (40 g per ton of water) of the algae removal composition (Example) through nitrogen and phosphorus removal prepared according to the present invention was evenly sprayed on the Chungnam D appeal.

Disaster Prevention Methods and Removal Rates According to Microorganism Types Microorganism types Disaster Prevention Removal rate (%) Microsystis Example 40 mg / L 99% Anabaena Example 40 mg / L 99% Synedra Example 40 mg / L 98% Closterium Example 40 mg / L 97%

Measurement before and after treatment Measurement before and after treatment Removal, increase
(%) Item unit Before processing After treatment Chl-a mg / ㎥ 23.5 0.88 96.3 Green algae water cell / ml 75,832 1,380 98.2 COD mg / l 6.2 3.4 45.2 T-N mg / l 2.4 0.9 62.5 T-P mg / l 0.082 0.009 89.1 ss mg / l 7.1 4.4 38.1 DO mg / l 9.0 9.6 6.6

As shown in Tables 2 and 3 above, even when a small amount of algae removal composition through nitrogen and phosphorus removal of the present invention can be seen that the green algae microorganisms showed a high removal rate of more than 95%. In addition, it can be seen that in addition to the algae, nitrogen, phosphorus, etc. also exhibit high removal rates.

Experiment 2: Red Tide Microorganism Removal Effect

40 ppm (40 g per ton of water) of the algae removal composition (Example) through nitrogen and phosphorus removal prepared according to the present invention was evenly sprayed on the Chungnam D appeal.

Disaster Prevention Methods and Removal Rates According to Microorganism Types Microorganism types Disaster Prevention Removal rate (%) Codhlodinium Example 40 mg / L 99% Noctiluca Example 40 mg / L 98% Gyrodinium Example 40 mg / L 98% Procentrum Example 40 mg / L 98% Chattonnnella Example 40 mg / L 98%

As shown in Table 4, even if a small amount of algae removal composition through the nitrogen and phosphorus removal of the present invention can be seen that the red tide microorganisms showed a high removal rate of more than 95%.

Claims (5)

A vehicle 100 parts by weight of the mixture of zeolite, sawdust, one of activated carbon, or two or more, photosynthetic bacteria (Phototrophic bacteria), Lactobacillus genus (Lactobacillus sp), Bacillus (Bacillus sp.), Yeast myogyun (Yeast), Pseudomonas species ( Pseudomonas sp .), Nitrosomonas sp ., Nitrobacter sp . Algae removal composition through the removal of nitrogen and phosphorus.
delete The method of claim 1,
The synthetic peroxide, using a metal peroxide,
In the metal peroxide, the metal is an algae removal composition through nitrogen and phosphorus removal, characterized in that using one or two or more of the alkali metal, alkaline earth metal, silicon, aluminum, magnesium, calcium.
The method of claim 1,
Algae removal composition through the nitrogen and phosphorus removal, characterized in that for mixing the powder microorganism and synthetic peroxide in a ratio of 1: 0.5 to 1.5 by weight.
The method according to any one of claims 1, 3 and 4,
Algae removal method through the removal of nitrogen and phosphorus to remove the algae and nitrogen, characterized in that the use of 5 to 40mg / L to the river and the lake to the appeal.