JP4422202B1 - Coagulant composition and coagulation treatment method - Google Patents

Abstract

The present invention provides a flocculant composition and a flocculant treatment method capable of rapidly agglomerating wastewater such as boiled udon soup and rice tofu.
A flocculant composition comprising a component derived from the genus Troy's family, a flocculant component, a step of adding the flocculant composition to a liquid to be agglomerated, and agglomeration There is provided a coagulation treatment method comprising a step of allowing the aggregation treatment target liquid to stand until an object settles, and a step of recovering the aggregation treatment target liquid.
[Selection figure] None

Description

  The present invention relates to an aggregating agent composition and an aggregating treatment method, and more particularly, to an aggregating agent composition and an agglomerating treatment method suitable for agglomerating wastewater such as boiled udon juice and rice tofu.

  In recent years, environmental pollution due to the drainage of udon boiled soup and rice tofu soup has been regarded as a problem. These waste waters can be agglomerated and treated by a coagulant composition or a coagulation treatment method as disclosed in, for example, Patent Literature 1 and Patent Literature 2.

  In Patent Document 1, environmentally friendly, rapid treatment of a wide range of wastewater such as water purification plants, civil engineering work sites, high-concentration wastewater generated during underground construction and ground excavation, sludge to urban wastewater, domestic wastewater, factory wastewater, etc. Intended to provide agglomerated hydrophobizing agents and methods of use that can be used, silica gel natural minerals 10-60 wt%, soluble aluminum salts 5-40 wt%, alkali metal salts 5-30 wt%, alkaline earth metal compounds 5-5 A powder agglomerated hydrophobic agent in which 1 to 10% by weight of an organic aggregating agent as an auxiliary agent is blended with 40% by weight of the aggregating main component has been proposed (see Patent Document 1, Abstract, Claim 1, etc.). ).

  In Patent Document 2, a protease-containing enzyme is added to the rice effluent for the purpose of removing the solid component of the rice effluent by a simple method and reusing the removed solid component as a raw material for functional foods and the like. Has been proposed, and a solid component contained in the rice effluent is agglomerated and settled (see Patent Document 2, Abstract, Claim 1).

JP 2001-219006 A JP 2007-38214 A

  However, the coagulant composition and the coagulation treatment method provided in the prior arts such as Patent Document 1 and Patent Document 2 have a problem that it takes a long time to coagulate wastewater such as boiled udon juice. It was. For example, in Patent Document 2, the standing time of the reaction solution is preferably about 24 hours (see Patent Document 2, paragraph [0080]). Therefore, in the prior art, there is a problem of shortening the agglomeration time of drainage of udon boiled juice, etc., and the present invention quickly drains the drainage of udon boiled juice and rice tofu soup to solve such a problem. It is an object of the present invention to provide an aggregating agent composition capable of aggregating treatment and an aggregating treatment method.

  The flocculant composition of the present invention provided to solve the above-mentioned problems is characterized by containing, as a main component, a component derived from the genus Troy's family, and a flocculant component. It is desirable that the component derived from the genus Troy's family included in the flocculant composition of the present invention is a product obtained by drying and pulverizing okra.

  In the flocculant composition of the present invention, the flocculant component preferably contains a polyvalent metal salt, and the flocculant component is preferably a sulfate band. The flocculant composition of the present invention desirably contains a surfactant component, and the surfactant component desirably contains an alkylamine oxide. The flocculant composition of the present invention preferably contains a coagulation aid component, and the coagulation aid component preferably contains active silicic acid.

  The coagulation treatment method of the present invention is characterized in that the above-described coagulant composition of the present invention is added to the coagulation treatment target liquid. The aggregation treatment target liquid in the present invention is wastewater containing udon powder, rice flour, wheat flour, or the like, such as boiled udon juice or rice broth.

  As in the case of the flocculant composition of the present invention, if it includes a component derived from the genus Troy's family and a flocculant component, boiled udon soup and rice than in the case of using the flocculant composition of the prior art It becomes possible to agglomerate wastewater such as scallop juice very quickly. In addition, the above-mentioned component from the genus Troy's family is obtained by treating those belonging to the genus Troy's family typified by okra and does not adversely affect the environment. If the flocculant composition is used, the liquid and the agglomerate obtained after the agglomeration treatment can be disposed of without any special treatment.

  By adopting the flocculant composition of the present invention containing a polyvalent metal salt as the flocculant component, it is possible to further reduce the treatment time of the flocculant treatment. By adopting (aluminum), it is possible to further improve the coagulation performance and shorten the processing time required for the coagulation treatment.

  By including the surfactant component in the flocculant composition of the present invention, the aggregation effect can be improved, and the time required for the aggregation treatment can be further shortened. Further, if a surfactant component containing an alkylamine oxide is used, the aggregating effect is further enhanced, and it is effective for shortening the processing time of the aggregating treatment.

  When the flocculant composition of the present invention contains a flocculant auxiliary component, the flocculant performance can be further improved, and the processing time required for the flocculant treatment can be shortened. Moreover, if the thing containing activated silicic acid is used as a coagulation auxiliary component, the coagulation effect is further enhanced and it is effective for shortening the treatment time of the coagulation treatment.

  In the flocculation treatment method of the present invention, the above-described flocculating agent composition of the present invention is added to the liquid to be treated, which is a flocculation target. Aggregation treatment is possible. Further, in the flocculation treatment method of the present invention, by controlling the amount of the flocculant composition of the present invention and the input method, the wastewater treatment can be performed so as to satisfy the drainage standard and the transparency standard. Become.

  Hereinafter, a flocculant composition according to an embodiment of the present invention and an aggregating treatment method using the same will be described, but the present invention is not limited thereto. The flocculant composition of the present embodiment includes a component derived from the genus Troy's genus Troyae obtained by treating okra, a flocculant component, an aggregating aid component, and a surfactant component. The method uses the flocculant composition.

  The component derived from the genus Troy's family in the present invention is a component derived from a plant such as angiospermia, dicotyledonous plant, mallow, mallow, abelmoschus, and the like okra and ryukyuroarooi. The component derived from the genus Troy's genus is composed of powders obtained by drying and pulverizing plants classified as genus Troy's, and includes powders obtained by drying and pulverizing okra (components derived from okra). It is. The component derived from the genus Troy's mallow includes pectin, galactan, araban, mucin and the like, as well as okra components such as minerals, calcium, potassium, vitamins A, B1, B2 and C. In this way, if the dried and pulverized component of the genus Troy's family is used as the component of the genus Troy's family, the surface area of the genus Troy's family will increase, and the aggregating action of the flocculant composition of the present invention Is more likely to occur.

  More specifically, it is desirable that the particle size of the powdery body forming the component derived from the genus Troy's family is 18 mesh or less, and more preferably 40 mesh or less. The particle size of the component from the genus Troy's family is preferably as fine as possible in consideration of the degree of dispersion and reactivity when the flocculant composition is introduced into the wastewater to be treated.

  In addition, the “component derived from the genus Troy's family” in the present invention is the epidermis part of a plant belonging to the genus Troy's family, the fiber wall forming the inner wall in the plant (hereinafter also referred to as “inner fiber wall”) and the seed. Either of them may be dried and pulverized together, or may be selected by combining any of these and dried and pulverized. As will be described later, the component derived from the genus Troy's family has the same effect on all of the epidermis part, inner fiber wall and seed, but is classified into the genus Troy's family such as Okra which is easy to manufacture and raw materials. From the standpoint of effectively utilizing the plant to be used, it is preferable to use a plant obtained by drying and pulverizing all parts of the plant belonging to the genus Troyceae as a component derived from the genus Troyceae.

  In the flocculant composition of the present invention, the content of the component derived from the genus Troy's family can be appropriately adjusted according to the amount of udon powder, rice flour, wheat flour, etc. contained in the liquid subject to the flocculation treatment. From the viewpoint of preparation and storage stability of the composition, it is preferably contained in an amount of about 5 to 15% in terms of a weight ratio to the amount of udon powder, rice flour, wheat flour and the like dissolved in the sample water, and about 7 to 10%. More preferably it is included.

  As the “surfactant component” in the present invention, a conventionally known surfactant can be employed. That is, the surfactant component is one or more selected from known surfactants such as amphoteric surfactants, anionic surfactants, cationic surfactants, and nonionic surfactants. A surfactant may be included, and the liquidity may be basic, acidic, or neutral.

  As the surfactant component, it is possible to employ an alkylamine oxide which is a zwitterionic surfactant, an alkylamino fatty acid sodium, an alkylbetaine, or the like. Similarly, surfactant components include fatty acid sodium and fatty acid potassium, which are anionic surfactants, alkyl trimethyl ammonium salts, dialkyl dimethyl ammonium salts, nonionic surfactants, which are cationic surfactants. Certain polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, and the like can be employed. In addition to the surfactant as described above, the surfactant component may contain a foam modifier, an alkali agent, and the like.

  As the surfactant component, for example, a surfactant (1%, alkylamine oxide), a foam modifier, an alkali agent, and a liquid having basicity can be suitably used. is there. More specifically, as the surfactant component, for example, Magiclin (registered trademark) (manufactured by Kao Corporation), Bath Magiclin (registered trademark) (manufactured by Kao Corporation), Mypet (registered trademark), or the like. (Manufactured by Kao Corporation), Baspica (registered trademark) (manufactured by Tsumura Corporation), Look (registered trademark) (manufactured by Lion Corporation), and the like can be used.

As the “flocculant component” in the present invention, a flocculant containing a polyvalent metal salt or a polymer flocculant can be preferably used. As the polyvalent metal salt that can be used as the aggregating agent component, it is possible to employ polyvalent metal salts such as aluminum (Al), iron (Fe), magnesium (Mg), calcium (Ca), and the like. For example, aluminum sulfate (sulfuric acid band; Al ₂ (SO ₄ ) ₃ .nH ₂ O) (Japanese Industrial Standards standard number JISK1423), polyaluminum chloride (PAC; Al ₂ (OH) _m Cl _6-m ), etc. are suitable. Can be used. In addition, the polymer flocculant may be classified into any of the attributes of cationic, anionic, and nonionic, such as a carboxyl group, an amide group, and a sulfone group in water-soluble organic substances of an acrylic polymer. Can be suitably used as the flocculant component.

  In addition, the flocculant component is a combination of one or more substances selected from polyvalent metal salts such as aluminum sulfate (sulfuric acid band) and polyaluminum chloride described above, and one or more kinds thereof. It may contain a substance as a main component and other substances as subcomponents. Similarly, the flocculant component is composed of the above-mentioned polymer flocculant combined with one or more substances, or one or more substances as a main component and other substances as subcomponents. It may be included. Further, the flocculant component may include both a flocculant composed of a polyvalent metal salt and a polymer flocculant.

As the “aggregation assistant component” in the present invention, an aggregation accelerator and a pH adjuster can be used. Specifically, as the coagulation assistant component, silicate clay that functions as an aggregation accelerator, other active silicic acid, sodium alginate, bentonite, powdered activated carbon, and the like can be suitably used. Silicate clay is mainly composed of silicon dioxide (SiO ₂ ), aluminum oxide (alumina) (Al ₂ O ₃ ), sodium oxide (Na ₂ O), iron oxide (Fe ₂ O ₃ ), calcium oxide ( CaO), potassium oxide (K ₂ O), magnesium oxide (MgO), water (H ₂ O) and the like.

As the silicate clay, those containing the above components in various blending ratios can be used. For example, silicon dioxide (SiO ₂ ) is 72.96% and aluminum oxide (Al ₂ O ₃ ) is 9.92%. Sodium oxide (Na ₂ O) 4.98%, iron oxide (Fe ₂ O ₃ ) 4.95%, calcium oxide (CaO) 3.27%, potassium oxide (K ₂ O) 0.13 %, Magnesium oxide (MgO) trace and moisture (H ₂ O) containing 3.81% can be suitably used. Specifically, the product name “Million” manufactured by Soft Silica Co., Ltd. can be suitably used for the silicate clay.

  In addition, as the aggregation assistant component, a basic substance that functions as a pH adjuster, an acidic substance, or the like can be preferably used. As the basic substance, sodium hydroxide, potassium hydroxide, calcium hydroxide, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium carbonate, potassium carbonate and the like can be suitably used. In addition, sulfuric acid, carbonic acid, hydrochloric acid and the like can be suitably used as the acidic substance. The agglomeration aid component is composed of a combination of one or more substances selected from the basic substances and acidic substances described above, or one or more substances as a main component and the other components as auxiliary substances. It may be included as a component.

  The aggregating treatment method of the present embodiment includes a step of allowing the aggregating treatment target liquid to stand until an agglomerate such as udon powder or rice flour settles, and a step of recovering the aggregating treatment target liquid. These steps may be performed by a conventionally known method. Further, regarding the method of charging the flocculant composition, the component derived from the genus Troy's family and the coagulant component may be simultaneously introduced into the wastewater, and the order of the introduction of the genus Troy's family component and the flocculating agent component may be appropriately changed. May be. From the viewpoint of the agglomeration effect, it is desirable to use a charging method in which the components derived from the genus Troy's genus and coagulant are introduced into the wastewater at the same time. It is most desirable to do.

In the flocculation treatment method of this embodiment, it is possible to perform effluent treatment so as to satisfy the effluent standard and the transparency standard by controlling the amount and method of feeding the flocculant composition according to the above-described embodiment. It becomes. Specifically, according to the agglomeration treatment method of the present invention, a COD standard such as COD 160 ppm (daily average 120 ppm), which is a stipulation when the amount of drainage is 500 m ³ / day or less, and a suspended matter amount 200 ppm (daily average 150 ppm) It will be possible to treat wastewater to meet the standards for the amount of suspended solids. Moreover, according to the coagulation treatment method of the present invention, it is possible to perform the waste water treatment so that the transparency of the upper liquid becomes 200 mm or more.

  Below, the experiment example including the Example and comparative example about the coagulant | flocculant composition mentioned above is demonstrated. The flocculant composition used in the experiment was prepared by weighing each component with an electronic balance (HL-200i manufactured by A & D Co., Ltd.) and mixing the components. The flocculant composition used in the experiment was prepared by appropriately adjusting the mixing ratio of each component as described in detail later.

As a component of the genus Troy's family that constitutes the flocculant composition, the flocculant component (polyvalent metal salt), the surfactant, and the flocculant auxiliary component (aggregation accelerator, pH adjuster), unless otherwise specified, The following were used.
Aroaceae Troloaoi genus-derived component: powder obtained by crushing and drying the whole okra (Okra-derived component)
Flocculant component (polyvalent metal salt): Aluminum sulfate (iron free sulfate band manufactured by Sumitomo Chemical Co., Ltd.)
Surfactant: Magiclin (registered trademark) manufactured by Kao Corporation
Aggregation aid component (aggregation accelerator): Silicate whiteness (soft silica) (product name “Million” manufactured by Soft Silica Co., Ltd.)
Aggregation aid component (pH adjuster): sodium hydroxide (94% sodium hydroxide (particulate) 94% Yoneyama manufactured by Yoneyama Pharmaceutical Co., Ltd.)
In the description of each experimental example below and the description in the table, the component derived from the genus Troeroeus genus that constitutes the flocculant composition, the flocculant component (polyvalent metal salt), the surfactant, the flocculant auxiliary component (aggregation) Unless otherwise specified, the blending amount of the accelerator and the pH adjusting agent is expressed as a weight ratio (%) based on the amount of flour dissolved in the sample water.

  Sample water was prepared as a drainage sample into which the flocculant composition was charged. Sample water was prepared by adding 6 g of flour under stirring conditions to 3000 ml of water heated to a range of 60 to 70 ° C. and dissolving it. Before introducing the flocculant composition, the upper liquid pH value and the liquid temperature of the sample water were measured.

  A beaker (IWAKI borosilicate glass (conforming to JIS R 3503) containing 500 ml of sample water (1 g of dissolved or dispersed flour) prepared as described above, outer diameter φ90 mm, height 120 mm, capacity 500 ml), a preliminarily prepared flocculant composition was added under stirring conditions to conduct an experiment. In this experiment, stirring and standing were performed for a predetermined time while measuring with a time watch. In addition, after the flocculant composition was introduced, the change over time of the floc state formed in the test water immediately after standing and the sedimentation height of the floc formed in the beaker after standing were visually observed. The sedimentation height was measured based on the above-described beaker scale.

  In addition, for the test water at the time of standing for 60 minutes after stirring as described above, the state of the upper liquid is visually observed, and the transparency of the upper liquid is measured with a transparency meter (TO-30 manufactured by Kenith Co., Ltd. (JIS). K 0102 compliant)). Furthermore, the COD (chemical oxygen demand) of the upper liquid was measured with a simple water quality measuring device (manufactured by Kyoritsu Riken). After a series of experiments, the pH of the test solution was measured with a pH test paper (Advantech pH test paper manufactured by Toyo Roshi Kaisha, Ltd.).

(Sample water)
As described in Table 1, no. 1-No. Sample water according to No. 14 was prepared. All were prepared by adding 6 g of flour under stirring conditions to 3000 ml of water heated in the range of 60 to 70 ° C. as described above. The average value of the transparency of the sample water prepared in this example was 24 mm, the average value of COD was 1357 ppm, and the average value of pH was 7.0.

(Effectiveness of components derived from the genus Troarooi of the mallow family)
Table 2 shows the experimental results for Experimental Examples A-1 to A-11 performed to verify the effectiveness of the components derived from the genus Troy's family. In Experimental Examples A-6 and A-11, powders obtained by drying and pulverizing whole okra, which is a component derived from the genus Troy's family, were used, but Experimental Examples A-2 to A-5, A- In 7-A-10, the powdery body which dried and grind | pulverized the seaweed, kelp, Nagatoro, natto, lotus root, Morohaya, aloe, and a banana was used instead of the component derived from the mallow family Troloaoi. Moreover, in Experimental example A-1, it experimented, without mix | blending the powdery body derived from the mallow family Troloaoi genus component and the other plant mentioned above. In each experimental example shown in Table 2, gypsum and pulp ash were further added as components of the flocculant composition.

  As can be seen from Table 2, in Experimental Examples A-6 and A-11 in which a component derived from the genus Troyceae was used, other plants that were different from the genus Troyceae genus such as seaweed and kelp were dried and ground. Experimental example A-2 to A-5, A-7 to A-10 using powdery substance, and experimental example A performed without blending a powdery substance derived from a mallow family Trolouaoi genus component or plant It was found that the transparency and transparency of the upper liquid were remarkably higher than those of -1, and a sufficient aggregating effect was obtained. Thus, it has been found that it is effective to obtain a coagulation effect by adding a component derived from the genus Troy's genus to the coagulant composition.

(Regarding the amount of ingredients derived from the genus Troy's)
Experiments related to Experimental Examples K-1 to K-5 shown in Table 3 were performed in order to examine the optimum value of the compounding amount of the component derived from the genus Troy's family (Okra derived component). In Experimental Examples K-1 to K-5, the amount of the component derived from the genus Troy's family was changed from 0% to 15% by weight with respect to the amount (1 g) of the flour dissolved or dispersed in the sample water. The experiment was conducted. As a result of the experiment relating to Experimental Examples K-1 to K-5, the upper liquid COD is high and the upper liquid COD is prepared by preparing a component derived from the genus Troy's genus in the range of 5% to 15%. Was found to be lower. Thereby, it turned out that it is suitable for the compounding quantity of the component derived from the mallow family Troloae mushroom to be in the range of 5% or more and 15% or less by weight ratio with respect to the amount of the flour dissolved in the sample water. .

(About the amount of aggregation promoter (silicate white clay))
Experiments related to Experimental Examples L-1 to L-4 shown in Table 4 were conducted in order to investigate the optimum value of the blending amount of the aggregation accelerator (silicate clay) blended as the aggregation assistant component. In Experimental Examples L-1 to L-4, the experiment was performed by changing the blending amount of silicate clay from 0% to 40% by weight with respect to the amount (1 g) of the flour dissolved or dispersed in the sample water. went. As a result of the experiment relating to Experimental Examples L-1 to L-4, the case of Experimental Example L3 in which the silicate clay is 20% by weight with respect to the amount (1 g) of the flour dissolved or dispersed in the sample water. The upper liquid transparency was the highest and the upper liquid COD was the lowest compared to the other experimental examples. In the case of Experimental Example L2 in which the weight ratio is 10% with respect to the amount (1 g) of the flour in which the silicate clay is dissolved or dispersed in the sample water, the upper liquid transparency is next to that in Experimental Example L3. The upper liquid COD was low. According to this result, the blending amount of silicate white clay is preferably within a range of about 5% to 30% by weight with respect to the amount (1 g) of flour dissolved or dispersed in the sample water, 15% It has been found that it is more preferable to be in the range of ˜30%.

(About the amount of surfactant)
Experiments related to Experimental Examples N-1 to N-4 shown in Table 5 were conducted in order to examine the optimum value of the surfactant content. In Experimental Examples N-1 to N-4, the amount of flour in which the blending amount of the surfactant is dissolved or dispersed in the sample water while maintaining the blending ratio of the other components constituting the flocculant composition constant. The experiment was conducted by changing the weight ratio from 0% to 20% with respect to (1 g). As a result of the experiments related to Experimental Examples N-1 to N-4, in the case of Experimental Example N3 in which 10% of the surfactant is blended, the upper liquid transparency is the highest compared to the other experimental examples, and the upper liquid COD Was the lowest. In addition, in Experimental Example N2 containing 5% of the surfactant, the upper liquid transparency was the second highest and the upper liquid COD was lower than in Experimental Example N3. Based on this result, it is desirable to blend the surfactant in an amount of about 5 to 10% by weight with respect to the amount (1 g) of the flour dissolved or dispersed in the sample water, and most desirably about 10%. It has been found.

(About the amount of flocculant component (sulfuric acid band))
Experiments according to Experimental Examples M-1 to M-4 shown in Table 6 were performed in order to examine the optimum value of the blending amount of the sulfuric acid band blended as the flocculant component. In Experimental Examples M-1 to M-4, an experiment was performed by changing the blending amount of the sulfuric acid band from 0% to 20% by weight with respect to the amount (1 g) of the flour dissolved or dispersed in the sample water. It was. As a result of experiments related to Experimental Examples M-1 to M-4, in the case of Experimental Examples M-3 and M-4 in which 10% of the sulfuric acid band is blended, the upper liquid transparency is high and the upper liquid COD is low. A sufficient aggregation effect was obtained. This is presumed to be a result of an effective number of metal ions contained in alumina (Al ₂ O ₃ ) and the like contained in the sulfate band effectively acting on the aggregation by adding the sulfate band. The According to the results of the experimental examples M-1 to M-4, the sulfuric acid band as a flocculant component is blended by about 10 to 20% by weight with respect to the amount (1 g) of flour dissolved or dispersed in the sample water. It was found that it is most preferable to add about 10%.

(About the amount of pH adjuster (sodium hydroxide))
In order to investigate the optimum value of the blending amount of the pH adjusting agent (sodium hydroxide) blended as the coagulation assistant component in this example, experiments related to Experimental Examples O-1 to O-5 shown in Table 7 were conducted. In Experimental Examples O-1 to O-4, lot no. 11 sample water was used, but in Experiment O-5, the sample water after the experiment in Experiment O-4 was used, and an experiment was performed by adding a sulfuric acid band thereto. As a result of the experiments related to Experimental Examples O-1 to O-4, the upper liquid fluoroscopy was performed by adjusting the amount of sodium hydroxide so that the pH of the upper liquid after the experiment was 7 or less, that is, neutral or acidic. It has been found that the degree of the liquid is high and the upper liquid COD is low, and a sufficient coagulation effect is obtained.

  Further, the pH of the upper liquid after the experiment is 7, that is, adjusting the blending amount of sodium hydroxide so as to be substantially neutral has higher upper liquid transparency than the case where it becomes acidic, and the upper liquid COD is higher. It turned out to be low. Further, by adding a sulfuric acid band in Experimental Example O-5 to the upper liquid after the experiment which was basic at pH 11 in Experimental Example O-4, the pH of the upper liquid after the experiment was 7.0. It was found that the upper liquid COD was high and the upper liquid COD was low as in the case of Experimental Example O-2. From these experimental examples, it has been found desirable to adjust the blending amount of sodium hydroxide so that the pH of the upper liquid after the experiment is about 5-8.

(Correlation between the pH of the upper liquid after the experiment and the aggregation effect)
In order to investigate the correlation between the upper liquid pH after the experiment and the aggregation effect, experiments related to Experimental Examples J-1 to J-3 shown in Table 8 were performed. In Experimental Examples J-1 to J-3, the blending amount of sodium hydroxide in the flocculant composition is 0 to 7.5% by weight with respect to the amount (1 g) of flour dissolved or dispersed in the sample water. Vary between. In Experimental Example J-3, the blending amount of the sulfuric acid band was further adjusted to adjust the pH. As a result, if the blending amount of sodium hydroxide or sulfuric acid band is adjusted and the pH of the upper liquid after the experiment is 7, that is, approximately neutral, the upper liquid transparency is high and the upper liquid COD is low. There was found.

  Moreover, since the upper liquid transparency is higher and the upper liquid COD is lower in the case of Experimental Example J-3 than in the case of Experimental Example J-1, the pH of the upper liquid after the experiment is smaller than 7. It has been found that the upper liquid COD is higher and the upper liquid COD is lower than when the pH is higher than 7. According to these experimental examples, it is desirable to adjust the blending amount of each component constituting the flocculant composition so that the pH of the upper liquid after the experiment is around 7 (substantially neutral) or lower (acidic), It has been found desirable to adjust the blending amount so that the pH falls within the range of 5-8.

(About the effect of temperature conditions of sample water)
Experiments P-1 to P-3 shown in Table 9 were conducted in order to examine the influence of the temperature condition of the sample water on the aggregation effect. In Experimental Examples P-1 to P-3, the amount of each component constituting the flocculant composition was the same, and the temperature of the sample water was changed in three stages of 50 ° C, 17 ° C, and 5 ° C. As a result of the experiment according to this experimental example, when the temperature of the sample water is high (50 ° C.), the upper liquid transparency is lower than that at normal temperature (17 ° C.) or low temperature (5 ° C.). It turned out to be high and the agglomeration effect was found to be low. Accordingly, it has been found that the temperature of the sample water is preferably in the temperature range of 5 ° C to 30 ° C, and more preferably in the temperature range of 5 ° C to 20 ° C.

(Effects of Okra used for components derived from the genus Troloae)
In order to investigate whether the agglomeration effect changes depending on which part of okra the okra powder that constitutes the component derived from the genus Troloae, the experiment was conducted on Experimental Examples Q-1 to Q-3 shown in Table 10 It was. Specifically, Experimental Example Q-1 is an experimental example using an okra skin part crushed, and Experimental Example Q-2 is a white wall part (inner wall part) partitioning the interior of the okra. It is an experimental example using what was taken out and grind | pulverized. Experimental Example Q-3 is an experimental example in which seeds inside the okra were taken out and ground. As a result, even if any portion of okra crushed is used as a component derived from the genus Troy's family, the upper liquid transparency is high, the upper liquid COD is low, and a sufficient coagulation effect is obtained. It was found that the agglomeration effect was slightly higher when the skin part and the inner wall part were used than when the seed part was used. From any viewpoint of effective utilization of the whole okra or creation of a component derived from the genus Troy's family, the whole okra is pulverized all together to obtain a aoi. It has been found that it is preferable to use it as a component derived from the family Troloae.

(About the effect of the amount of flocculant composition on the sample water)
In order to investigate the influence of the amount of the flocculant composition to be charged on the sample water on the aggregation effect, experiments related to the following Experimental Examples R-1 to R-3 were performed. The flocculant composition used in Experimental Example R-2 is such that the blending amount of each component falls within the optimum value of the blending amount derived by each of the above Experimental Examples, and the sample water used in each Experimental Example Is a blending amount suitable for agglomerating (hereinafter referred to as “standard amount”). In contrast, in the flocculant composition used in Experimental Example R-1, the amount of each component is about half that used in Experimental Example R-2. Moreover, the coagulant | flocculant composition used in Experimental example R-3 is prepared so that the compounding quantity of each component may be about twice that used in Experimental example R-2. As a result of experimental examples R-1 to R-3, the case of experimental example R-2 has the highest upper liquid transparency and the upper liquid COD is low, and the case of experimental example R-3 follows this. It was found that the transparency was high and the upper liquid COD was low. Therefore, it has been found that a high coagulation effect can be obtained by adding the flocculant composition to the sample water in an amount of about 1 to 2 times the standard amount.

  The flocculant composition of the present invention and the flocculation treatment method using the same can be suitably used in any place where wastewater containing udon powder, rice flour, wheat flour, etc. is generated, such as boiled udon juice and rice tofu. For example, it can be most suitably used in udon manufacturers and sake manufacturers. And it is possible to use suitably the aggregate (Udon powder, rice flour, or wheat flour) obtained by the aggregation processing method of this invention, for example as a raw material of biofuel.

Claims (8)

Aoiaceae Trolouaoi derived component,
And the flocculant component, only including,
A flocculant composition for treating wastewater containing udon powder, rice flour, or wheat flour, wherein the component from the genus Troy's family is a dried and crushed okra . The flocculant component comprises a polyvalent metal salt;
The flocculant composition according to claim 1 . The flocculant component is a sulfate band or polyaluminum chloride ;
The flocculant composition according to claim 2 . Including a surfactant component,
The flocculant composition according to any one of claims 1 to 3 . The surfactant component comprises an alkylamine oxide;
The flocculant composition according to claim 4 . Including an agglomeration aid component;
The flocculant composition according to any one of claims 1 to 4 . The agglomeration aid component contains active silicic acid,
The flocculant composition according to claim 6 . A step of adding the flocculant composition according to any one of claims 1 to 7 to the aggregation treatment target liquid;
A step of allowing the aggregation target liquid to stand until the aggregates settle;
Recovering the aggregate from the aggregation target liquid;
A coagulation treatment method comprising: