JP6292493B1 - Coagulant composition and coagulation treatment method - Google Patents

Abstract

A one-part type flocculant composition that can coagulate and separate organic substances such as starch and oils and fats contained in organic wastewater containing wastewater such as food wastewater, and does not need to be mixed with other additives at the time of use. And a coagulation treatment method using the same. SOLUTION: A mixture of a component of the genus Troy's family, which is made of dried and crushed okra, and a zeolite, a flocculant component containing a sulfuric acid band, an anionic polymer flocculant and a cationic polymer flocculant, slaked lime and activated carbon. A flocculant composition comprising: an aggregating aid component. [Selection figure] None

Description

  The present invention relates to a flocculant composition and an aggregating treatment method, and more particularly, to an aggregating agent composition and an aggregating treatment method suitable for aggregating and separating organic substances such as starch and fats and oils contained in organic matter-containing wastewater such as food wastewater.

  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, 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).

  Furthermore, in Patent Document 3, for the purpose of solving the problem of shortening the flocculation treatment time of wastewater such as boiled udon noodles, it includes “a mallow family Troloae mushroom-derived component, and a flocculant component, A flocculant composition for treating wastewater containing udon flour, rice flour, or wheat flour, characterized in that a component derived from the genus Troy's family is dried and crushed okra has been proposed (Patent Document 3). , Summary, claim 1 etc.).

JP 2001-219006 A JP 2007-38214 A Japanese Patent No. 4422202

  However, in the flocculant composition and the coagulation treatment method provided in the conventional techniques such as Patent Document 1 to Patent Document 3 described above, organic substances such as starch and fats and oils contained in organic matter-containing wastewater such as food wastewater are coagulated and separated. It takes a long time, and other additives must be mixed at the time of use, which is complicated and still has room for improvement.

  Therefore, the object of the present invention is to be able to agglomerate and separate organic substances such as starch and fats and oils contained in organic matter-containing wastewater such as food wastewater in a short time, and it is not necessary to mix other additives at the time of use It is another object of the present invention to provide a coagulant composition and a coagulation treatment method using the same.

The flocculant composition of the present invention provided to solve the above-mentioned problems is
A mixture of a component of the genus Troy's family consisting of dried and crushed okra and zeolite,
A flocculant component comprising a sulfuric acid band, an anionic polymer flocculant and a cationic polymer flocculant;
A coagulant auxiliary component containing slaked lime and activated carbon,
It is characterized by.

  According to the flocculant composition of the present invention having such a configuration, it is not necessary to mix other additives at the time of use, and it is a single agent and is contained in organic matter-containing wastewater such as food wastewater in a short time. Organic substances such as oils and fats can be agglomerated and separated.

The flocculant composition of the present invention is
8-12% by weight of the mixture,
40-45 mass% of polyvalent metal salt,
2-3 mass% of anionic polymer flocculant,
2-3% by mass of a cationic polymer flocculant,
38-42% by mass of slaked lime,
1 to 5% by mass of activated carbon (total 100% by mass),
Is preferred.

  According to the flocculant composition of the present invention having such a configuration, it is certainly not necessary to mix other additives at the time of use, and in one agent and in an organic matter-containing wastewater such as food wastewater in a short time. Organic substances such as starch and fats and oils contained can be agglomerated and separated.

Moreover, in the above-mentioned nho flocculant composition of the present invention,
The mixture contains 10 to 20 parts by mass of zeolite with respect to 1 part by mass of the component from the genus Troy's family.
Is preferred.

  According to the flocculant composition of the present invention having such a configuration, there is no need to mix other additives at the time of use more reliably, and it is a single agent and organic matter-containing wastewater such as food wastewater in a short time. Organic substances such as starch and fats and oils contained in can be agglomerated and separated.

  In the aggregating treatment method using the flocculant composition of the present invention, only the flocculant composition of the present invention is added to the liquid to be agglomerated while adjusting the amount thereof. is there. The flocculation treatment target liquid in the present invention includes potato peel drainage, pizza / past tag wrist wrap drainage, donut grapple strap drainage, noodle drainage, washed rice drainage, rice bran manufacture drainage, udon boiled juice and rice tofu soup, udon flour, rice flour Or it is organic matter containing wastewater, such as food wastewater containing organic substances, such as starch and fats and oils, such as wheat flour.

  As in the case of the flocculant composition of the present invention, if it includes a component derived from the genus Troy's family, a flocculant component, and a flocculant auxiliary component, it is compared with the case of using the prior art flocculant composition. Thus, it becomes possible to agglomerate the organic matter-containing wastewater easily and quickly with a single agent. In addition, the component derived from the genus Troy's genus Troy's family is obtained by treating those belonging to the genus Troy's family typified by Okra, and does not have an adverse effect on 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.

  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 according to the present embodiment includes a component derived from the genus Troy's family, which is obtained by treating okra, a flocculant component, and a flocculant aid component. The flocculant treatment method according to the present embodiment includes the flocculant. A composition is used.

(1) Mixture of dried and crushed okra-derived mushroom family Troloae mite genus and zeolite In the present invention, mushroom family Troloae mite-derived components (hereinafter also referred to as “component A”) are angiosperms, dicotyledonous plants. It is a component derived from plants such as mushrooms, mallows, okras belonging to the genus Abelmoschus and Ryukyu trout mallow. 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 from the genus Troy's family” in the present invention refers to the epidermis part of a plant belonging to the genus Troy's family, the fiber wall that forms 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.

  Various zeolites can be used as long as the effects of the present invention are not impaired. For example, hydrogen-type zeolite, sodium-type zeolite, potassium-type zeolite, calcium-type zeolite, magnesium-type zeolite, aluminum-type zeolite, iron-type zeolite, silver-type zeolite, copper-type zeolite, or two or more zeolites thereof can be mentioned. As the zeolite particles used, coal-fired ash can be used. Zeolite particles having a smaller particle size are preferable because granulated particles having a large adsorption performance can be obtained.

  In the flocculant composition of the present invention, it is preferable that the mixture of the component derived from the genus Troy's genus and zeolite contains 10 to 20 parts by mass of zeolite with respect to 1 part by mass of the genus Troy's family. As clarified in the experiment described later, the mixture of the component derived from the genus Troy's family and zeolite contains 10 to 20 parts by mass of the zeolite with respect to 1 part by mass of the genus Troy's family and further, 13 It is preferable to contain -18 mass parts.

<Experimental example 1>
A flocculant composition having the following composition was prepared. At this time, the component A and the mass parts of zeolite in the mixture were as shown in Table 1. Using these aggregating agent compositions, agglomeration treatment of waste water from an Italian restaurant was performed. That is, 0.2 g of the flocculant composition was put into waste water, stirred with a magnetic stirrer, and the time until aggregation was measured. The results are shown in Table 1.
From this result, the mixture of the mallow family Troloae mite-derived component and the zeolite contains 10 to 20 parts by mass of the zeolite, further 13 to 18 parts by mass with respect to 1 part by mass of the mallow family Troloae mite-derived component. I can see that it is preferable.

[Composition of flocculant composition (total 100 mass%)]
Mixture 10% by mass
Sulfuric acid band 42% by mass
Anionic polymer flocculant 3% by mass
Cationic polymer flocculant 2% by mass
Slaked lime 40% by mass
Activated carbon 3% by mass

As the sulfuric acid band, a ferrous sulfate band manufactured by Sumitomo Chemical Co., Ltd. is used. As the anionic polymer flocculant, Diafloc P100L manufactured by Mitsubishi Chemical Corporation is used. As the cationic polymer flocculant, Used Diaflock KY108 manufactured by Mitsubishi Chemical Corporation. As the activated carbon, Nanshin Charcoal No. 2 manufactured by Nanshin Service Co., Ltd. was used (the same applies to the following experimental examples).

(2) Flocculant component and flocculation aid component (2-1) Flocculant component containing polyvalent metal salt, anionic polymer flocculant and cationic polymer flocculant The composition is characterized by containing a polyvalent metal salt and a polymer flocculant, an anionic polymer flocculant and a cationic polymer flocculant. By containing a plurality of types of flocculant components as described above, the flocculant composition of the present invention can efficiently agglomerate organic matter-containing wastewater having a complicated composition.

  By using a material containing a polyvalent metal salt as the flocculant component, it becomes possible to further reduce the processing time of the flocculant treatment. In particular, by using a sulfate band (aluminum sulfate) as the flocculant component, The performance can be further improved, and the processing time required for the aggregation process can be shortened.

As the polyvalent metal salt, it is possible to employ a polyvalent metal salt such as aluminum (Al), iron (Fe), magnesium (Mg), calcium (Ca), for example, a sulfate band (aluminum sulfate; Al ₂ (SO ₄ ) ₃ · nH ₂ O, JISK1423), polyaluminum chloride (PAC; Al ₂ (OH) _m Cl _6-m ), and the like can be preferably used. Of these, a sulfate band is preferable.

  Some polymer flocculants are classified into cationic, anionic, and nonionic attributes. In the present invention, anionic polymer flocculants and cationic polymer flocculants are used. An acrylic polymer water-soluble organic substance in which a carboxyl group, an amide group, a sulfone group or the like is arranged can be suitably used as a coagulant component.

  Among them, as the anionic polymer flocculant, a metal salt of acrylamide / acrylic acid copolymer is preferable, and specifically, sodium salt of acrylamide / acrylic acid copolymer and / or acrylamide / acrylic acid / 2- Sodium salt of acrylamido-2-methylpropane-1-sulfonic acid copolymer is preferred.

  As the cationic polymer flocculant, an acrylamide copolymer is preferable. Specifically, acrylamide / acrylic acid / 2- (acryloyloxy) ethyltrimethylammonium chloride = 2- (methacryloyloxy) ethyltrimethylammonium = A chloride copolymer and / or an acrylamide / 2- (acryloyloxy) ethyltrimethylammonium chloride copolymer and / or a methacrylic acid N, N-dialkylaminoalkyl ester / acrylamide copolymer are preferred.

(2-2) Aggregation aid component containing slaked lime and activated carbon The flocculant composition of the present invention is characterized by containing slaked lime (calcium hydroxide) and activated carbon as an aggregation aid component. By containing a plurality of types of coagulant aid components as described above, the coagulant composition of the present invention effectively functions the above coagulant component and efficiently discharges organic matter-containing wastewater having a complicated composition. It can be agglomerated.

  In other words, the flocculant composition of the present invention includes a flocculant auxiliary component, thereby further improving the flocculant performance and shortening the processing time required for the flocculant treatment. 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.

  Here, in the flocculant composition of the present invention, the mixture is 8 to 12% by mass, the polyvalent metal salt is 40 to 45% by mass, the anionic polymer flocculant is 2 to 3% by mass, and the cationic polymer agglomeration. It is preferable that 2-3 mass% of an agent, 38-42 mass% of slaked lime, and 1-5 mass% of activated carbon are contained (total 100 mass%).

<Experimental example 2>
A flocculant composition having the following composition was prepared. Under the present circumstances, the mixture of 1 mass part of zeolite was used with respect to 1 mass part of A component. Table 2 shows the content ratio of the polyvalent metal salt (sulfuric acid band), the anionic polymer flocculant, and the cationic polymer flocculant. Using these aggregating agent compositions, agglomeration treatment of waste water from an Italian restaurant was performed. That is, 0.2 g of the flocculant composition was put into waste water, stirred with a magnetic stirrer, and the time until aggregation was measured. The results are shown in Table 2.
From this result, it is understood that 40 to 45% by mass of the polyvalent metal salt, 2 to 3% by mass of the anionic polymer flocculant, and 2 to 3% by mass of the cationic polymer flocculant are preferable.

[Composition of flocculant composition (total 100 mass%)]
Mixture 10% by mass
Sulfuric acid bands are shown in Table 2.
Anionic polymer flocculants are shown in Table 2.
Cationic polymer flocculants are shown in Table 2.
Slaked lime 40% by mass
Activated carbon 3% by mass

<Experimental example 3>
A flocculant composition having the following composition was prepared. Under the present circumstances, the mixture of 1 mass part of zeolite was used with respect to 1 mass part of A component. Further, the polyvalent metal salt (sulfuric acid band) is 42% by mass, the anionic polymer flocculant is 3% by mass, the cationic polymer flocculant is 2% by mass, and the slaked lime and activated carbon content is shown in Table 3. It was as follows. Using these aggregating agent compositions, agglomeration treatment of waste water from an Italian restaurant was performed. That is, 0.2 g of the flocculant composition was put into waste water, stirred with a magnetic stirrer, and the time until aggregation was measured. The results are shown in Table 2.
This result shows that it is preferable to contain 38-42 mass% of slaked lime, and 1-5 mass% of activated carbon.

[Composition of flocculant composition (total 100 mass%)]
Mixture 10% by mass
Sulfuric acid band 42% by mass
Anionic polymer flocculant 3% by mass
Cationic polymer flocculant 2% by mass
Slaked lime Table 3 shows.
Activated carbon is shown in Table 3.

(3) Coagulation treatment method using the above-mentioned coagulant composition The coagulation treatment method of the present invention is only itself (one agent) while adjusting the amount of the coagulant composition of the present invention to organic matter-containing wastewater such as udon powder and rice flour. Adding, stirring, and allowing the agglomeration treatment target liquid to stand until the agglomerate settles and recovering agglomerated waste (sludge and floc) from the agglomeration treatment target liquid. This step may be performed by a conventionally known method.

  The agglomerated waste obtained using the flocculant composition of the present invention contains an organic substance as a main component, and therefore can be used as a raw material for biomass fuel. Therefore, if a system for collecting this is constructed, It is meaningful as a social infrastructure (energy infrastructure).

  In the flocculation treatment method of the present invention, by controlling the amount and method of feeding the flocculant composition according to the above-described embodiment, the flocculation treatment of organic matter-containing wastewater is performed so as to satisfy the wastewater standard and the transparency standard. It becomes possible to carry out.

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.

The flocculant composition of the present invention and the flocculation treatment method using the same can be suitably used in any and all places where wastewater containing udon powder, rice flour, wheat flour, etc. is generated, such as boiled udon soup and rice tofu. For example, it can be most suitably used in udon manufacturers, sake manufacturers, restaurants and the like. The aggregated waste obtained by the aggregation treatment method of the present invention can be suitably used as a raw material for fertilizers and biofuels, for example.

Claims (1)

A mixture of a component of the genus Troy's family consisting of dried and crushed okra and zeolite,
A flocculant component comprising a sulfuric acid band, an anionic polymer flocculant and a cationic polymer flocculant;
A coagulant auxiliary component containing slaked lime and activated carbon ,
8-12% by weight of the mixture,
40-45 mass% of polyvalent metal salt,
2-3 mass% of anionic polymer flocculant,
2-3% by mass of a cationic polymer flocculant,
38-42% by mass of slaked lime,
1 to 5% by mass of activated carbon (total 100% by mass),
The mixture contains 10 to 20 parts by mass of zeolite with respect to 1 part by mass of the component from the genus Troy's family .
One-pack type flocculant composition characterized by the above-mentioned.