JP3876497B2 - Flocculant and flocculation method using the same - Google Patents

Description

【００４９】
表１の結果から、モロヘイヤからの抽出物を含有する凝集剤１，２，３，５を用いた場合には、従来より用いられている比較例の凝集剤ａ，ｂに比べて、沈降速度、濁度の面において優れた凝集特性を示すことがわかる。また、凝集剤６のように、従来品と混合することにより、さらに優れた凝集特性を得られることがわかる。
【００５０】
特性評価２
まず始めに、凝集評価用懸濁液として、４重量％のカオリン水溶液に硫酸アルミニウムを０．２重量％添加したものを用意した。そして、共栓付きの２００ｍｌメスシリンダーに１００ｍｌの懸濁液を入れ、メスピペットにより、実施例及び比較例の凝集剤を懸濁液にポリマー分又は固形分として５ｐｐｍなる濃度で添加した。直ちに同メスシリンダーを上下１０回転攪拌を行い、その後、静置して懸濁粒子の沈降速度及び濁度（静置３分後）を測定した。
【００５１】
この測定結果を表２に示す。
【００５２】
【表２】

【００５３】
表２の結果から、モロヘイヤからの抽出物を含有する凝集剤１，２，３，５と硫酸アルミニウムとを併用した場合には、比較例の凝集剤ａ，ｂと硫酸アルミニウムとを併用した場合に比べて、沈降速度、濁度の面において優れた凝集特性を示すことがわかる。また、凝集剤６のように、従来品と混合することにより、さらに優れた凝集特性を得られることがわかる。
【００５４】
特性評価３
まず始めに、凝集評価用懸濁液として、電子部品工場の廃水（原水は酸性を示し、消石灰で中和処理したもの）（水素イオン濃度指数（ｐＨ）：５．６，懸濁物質濃度（ＳＳ）：１．５重量％）に硫酸アルミニウムを３００ｐｐｍ添加したものを用意した。そして、共栓付きの２００ｍｌメスシリンダーに１００ｍｌの懸濁液を入れ、メスピペットにより、実施例及び比較例の凝集剤を懸濁液にポリマー分又は固形分として４ｐｐｍなる濃度で添加した。直ちに同メスシリンダーを上下１０回転攪拌を行い、その後、静置して懸濁粒子の沈降速度及び濁度（静置３分後）、脱水後のケーキと濾布との剥離性、ケーキ含水率を測定した。
【００５５】
この測定結果を表３に示す。なお、表中の剥離性の評価は、極めて良好な状態を◎とし、良好な状態を○とし、若干剥離が悪いものを△とする。
【００５６】
【表３】

【００５７】
表３の結果から、モロヘイヤからの抽出物を含有する凝集剤３，４，５とポリ塩化アルミニウムとを併用した場合には、比較例の凝集剤ａ，ｂとポリ塩化アルミニウムとを併用した場合に比べて、沈降速度、濁度、剥離性、ケーキ含水率の面において優れた凝集特性を示すことがわかる。また、凝集剤７のように、比較例の凝集剤と混合することにより、さらに優れた凝集特性を得られることがわかる。
【００５８】
特性評価４
まず始めに、凝集評価用懸濁液として、下水処理場の混合汚泥（ｐＨ：６．６，ＳＳ：２．８重量％）を用意した。そして、この混合汚泥をジャーテスターにて攪拌し、これに凝集剤ｃ又はｄを懸濁物質（ＳＳ）当たり０．６重量％添加し、さらに攪拌後、各凝集剤を懸濁物質（ＳＳ）当たり０．１５重量％添加し攪拌を行った。そして、凝集後静置して汚泥の沈降速度、脱水濾液の濁度、ケーキと濾布との剥離性、ケーキ含水率、濾液の臭気を測定した。
【００５９】
この測定結果を表４に示す。なお、表中の剥離性の評価は、極めて良好な状態を◎とし、良好な状態を○とし、若干剥離が悪いものを△とする。濾液の臭気の評価は、全く無臭のものを◎とし、微臭のものを△とする。
【００６０】
【表４】

【００６１】
表４の結果から、モロヘイヤからの抽出物を含有する凝集剤５を比較例の凝集剤ｃ又はｄと併用した場合には、比較例の凝集剤同士の併用に比べて、沈降速度、濁度、剥離性、ケーキ含水率の面において優れた凝集特性を示すことがわかる。また、モロヘイヤからの抽出物を含有する凝集剤を用いることにより、処理液の臭気を低減させる効果があることも確認された。さらに凝集剤５と天然産生凝集剤であるキトサン（凝集剤ｄ）と併用して用いることにより、脱水ケーキは、堆肥や飼料として用いることが可能となる。
【００６２】
特性評価１〜特性評価４からわかるように、本発明に係る凝集方法によれば、モロヘイヤの抽出物からなる凝集剤を用いることにより、従来の凝集剤を用いる場合に比べ、優れた凝集特性、臭気低減効果を得ることができ、工業排水処理、上下水道処理等のいずれの凝集処理においても利用できることがわかる。また、このモロヘイヤの抽出物からなる凝集剤は、従来から用いられている凝集剤と混合或いは併用することにより、さらに凝集効果を向上させることができる。特に、他の天然産生凝集剤と混合或いは併用することにより、脱水後のケーキも堆肥や飼料として利用できることになる。
【００６３】
【発明の効果】
以上の説明からも明らかなように、本発明に係る凝集剤及び凝集方法によれば、優れた凝集特性及び消臭効果を得ることができる。さらに、天然産生凝集剤を用いてなることから、人体や環境に対して安全で、合成高分子凝集剤のように化石資源を消費することがなく、再生可能な資源により再生することができる。これにより、従来では焼却や埋立処分されていた脱水後のケーキが堆肥や飼料として利用できることになり、省資源、有害物の低減、廃棄物の有効利用の点から地球環境保全に大きく貢献することができる。[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a flocculant used in various fields such as wastewater treatment field, water supply / sewerage field, fermentation industry, paper industry, earthwork, and a coagulation method using the same.
[0002]
[Prior art]
Suspended particles such as industrial wastewater discharged into water with mass production and consumption in recent years are increasing, but these fine particles suspended and dispersed in water are agglomerated and separated to clarify the water. Conventionally, synthetic polymer flocculants such as polyacrylamide and copolymers thereof have been generally used as flocculants having the action of converting to polyacrylamide. However, these synthetic polymer flocculants have the following problems.
[0003]
・ Even if released into soil, it is not decomposed and accumulated.
[0004]
・ Monomer (acrylamide etc.) itself is toxic.
[0005]
・ Synthesized from fossil resources such as petroleum and made from materials that cannot be regenerated by mankind.
[0006]
In view of such environmental destruction, safety, and depletion of fossil resources, development of a safe flocculant that is susceptible to biodegradation is required.
[0007]
Recently, the development of flocculants capable of obtaining biodegradability has progressed, but the safety to the human body has not been sufficiently studied. The actual situation is that it has not been used yet for the treatment of water and compost of processed agglomerates and feed.
[0008]
[Problems to be solved by the invention]
Therefore, as a natural polymer flocculant, guar gum (extracted from legume guwa seeds), sodium alginate (extracted from brown algae such as kombu, kameme, arame, etc.), starch, gelatin, chitosan (from carp shell) Extraction) and the like have been studied, but these have not been widely put into practical use due to difficulties in breeding and cultivation, limited applications, and low aggregation effects.
[0009]
The present invention has been made in view of the above circumstances, and provides a flocculant and a flocculant that are highly safe for the environment and the human body, have excellent aggregating activity, and can be used in a wide range of applications. The purpose is to provide.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the flocculant according to the present invention is characterized by containing at least one of moroheiya, this dried product, or this extract, and a polymer flocculant .
[0011]
In addition, the aggregating method according to the present invention adds a flocculant containing moroheiya or at least one of this dried product or this extract and a polymer flocculant to the suspension, and agglomerates and separates the fine particles. It is characterized by that.
[0012]
The flocculant composed of moroheiya or this dried product or this extract is superior in flocculant properties and superior in the deodorizing effect of the treatment liquid as compared with conventional flocculants. Furthermore, since this flocculant is a natural product, it is safe for the human body and the environment, and cakes that have been previously landfilled can be used as compost and feed, saving resources, reducing harmful substances, and discarding them. From the viewpoint of effective use of things, it can greatly contribute to global environmental conservation.
[0013]
Furthermore, this aggregating agent can obtain a higher aggregating effect by treating with an acid and / or alkali, and further by mixing or using in combination with an aggregating aid and an inorganic aggregating agent .
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
[0015]
The flocculant according to the present invention is characterized by containing at least one of moroheiya, this dried product, or this extract, and a polymer flocculant .
[0016]
Morohaya is an annual plant belonging to the genus Corcorus belonging to the linden family that is mainly cultivated in the Arab tropical regions such as Syria, Jordan, and Iran, mainly in Egypt, and has been used for food as a green-yellow vegetable. The present invention utilizes, as a flocculant, an acidic polysaccharide exhibiting viscosity which is the main component of this moroheiya.
[0017]
Specifically, a flower, stem, leaf, root, or part of these in a paste form may be used as a flocculant.
[0018]
Alternatively, a powder obtained by pulverizing a flower, stem, leaf, root, or part of these in a dry state with a mixer or the like may be used as the flocculant. For drying the flocculant, any method such as sun drying, air drying in the shade, vacuum drying, hot air drying, freeze drying and the like may be used.
[0019]
Furthermore, an extract obtained by extracting these pastes and powders with water, warm water, hydrophilic organic solvents (alcohols, ethers, N, N-dimethylformamide, dimethyl sulfoxide, etc.), or a mixture thereof. It may be a flocculant. Further, the extract may be fractionated or the extract may be dried. In addition, as an extract, water or warm water is preferable.
[0020]
Moreover, what reprecipitated the said extract with the organic solvent used as a poor solvent, and what dried this are good also as a coagulant | flocculant.
[0021]
As for these extract liquids, it is good to filter the solid substance in a liquid with a filter etc. as needed.
[0022]
Further, these flocculants may be treated or extracted with an aqueous alkali solution or an acid aqueous solution, and this may be used as the flocculant. Examples of the alkali include ammonia water, various amine compounds, sodium hydroxide, potassium hydroxide, sodium carbonate and the like. Examples of the acid include organic acids such as lactic acid, butyric acid, acetic acid, and formic acid, and inorganic acids such as sulfuric acid, hydrochloric acid, and nitric acid. In addition, since moroheiya contains many acidic groups, it is more preferable to process with an alkali from the ease of reaction.
[0023]
In the present invention, moroheiya can be used as a flocculant as it is, but as described above, use as a powder or extract makes it easier to diffuse in the treatment liquid (suspension). It is effective. In addition, the flocculation activity per weight of the same solid is more advantageous when the product is dried after being extracted with water, warm water, a water-soluble organic solvent, or the like than when the product is dried as it is.
[0024]
However, if the polysaccharide component of Morohea is ground or heated too much, the molecular weight is reduced due to cleavage of the main and side chains, and water insolubilization is caused by intramolecular crosslinking reaction, resulting in a decrease in aggregation activity.
[0025]
On the other hand, the flocculation method according to the present invention includes a flocculant containing at least one of the above-mentioned moroheiya, this dried product, or this extract, and a polymer flocculant. It is added to a suspension such as waste water, and the fine particles in the suspension are agglomerated and separated.
[0026]
These flocculants can be used as they are as described above, but it is preferable to use them as powders or extracts by drying or extracting them with various solutions. These flocculants may be treated with alkali and / or acid.
[0027]
Moreover, these flocculants do not need to be used individually by 1 type, It is good to use in combination of multiple types. For example, the following coagulation aids, inorganic coagulants, organic coagulants, nonionic polymer coagulants, anionic polymer coagulants, cationic polymer coagulants, amphoteric polymer coagulants are mixed or used together (separately To be added). By mixing or using in combination with these other agents, various aggregation properties are improved.
[0028]
(1) Agglomeration aid slaked lime, sodium silicate, bentonite, fly ash (2) Inorganic flocculant aluminum sulfate, polyaluminum chloride, sodium aluminate, ferrous sulfate, ferric chloride, ferric sulfate, copper chloride , Modified basic aluminum sulfate (LACS), active silica (3) organic coagulant dimethyl diallyl ammonium chloride, alkyl-epichlorohydrin condensate, polyethyleneimine, alkylene dichloride and polyalkylene polyamine condensate, dicyandiamide formalin condensate, aniline- Formaldehyde heavy complex hydrochloride, polyhexamethylene thiourea acetate, polyvinylbenzyltrimethylammonium chloride (4) Nonionic polymer flocculant polyacrylamide, polymethacrylamide, starch, guar gum Gelatin, polyoxyethylene, polyoxypropylene (5) Anionic polymer flocculants and (meth) acrylic acid polymers such as polyacrylamide and partial hydrolysates of polymethacrylamide, acrylic acid or methacrylic acid and acrylamide or methacrylamide Copolymers and salts thereof, terpolymers of acrylic acid or methacrylic acid and acrylamide or methacrylamide and 2-acrylamido-methylpropanesulfonic acid, vinylsulfonic acid or vinylmethylsulfonic acid, and salts thereof, polyacrylamide And polymethacrylamide sulfomethylates and salts thereof, sodium alginate, guar gum soda salt, carboxymethylcellulose soda salt, starch soda salt, and other polymers. Salts and the like. Polystyrene, polyphenylene ether, polycarbonate, polyphenylene sulfide, polyethylene terephthalate, preferably polyphenylene ether, polycarbonate.
[0029]
(6) Cationic polymer flocculants and quaternized products of dialkylaminoalkyl (meth) acrylates (as quaternizing agents such as methyl chloride and benzyl chloride) and their acid salts (acid salts include hydrochloride, sulfuric acid) Inorganic acid salts such as salts and organic acid salts such as acetates, etc., or a polymer or copolymer of these with (meth) acrylamide; for example, methyl chloride quaternized product of dimethylaminoethyl acrylate or this and acrylamide Polymers or copolymers of quaternized products or acid salts of dialkylaminoalkyl (meth) acrylamides, or polymers or copolymers of these with (meth) acrylamides; for example, methyl chloride quaternary of dimethylaminopropyl acrylamide Copolymers of acrylamide and acrylamide / cationized modified products of polyacrylamide; examples For example, Mannich modified product of polyacrylamide and Hoffman degradation product, epihalohydrin-amine condensate; for example, polycondensation product of epihalohydrin and alkylenediamine having 2 to 8 carbon atoms, polydimethyldiallylammonium chloride, polyvinyl imidazoline and its salts, polyvinylamidine and Its salts ・ Chitosan and its salts ・ Polyvinylpyridine and its salts ・ Polythiourea ・ Water-soluble aniline resin ・ Chloromethylated polystyrene ammonium salt or amine quaternary salt ・ Polyvinylimidazole and its salts (7) Amphoteric polymer flocculants ・ Acrylamide -Acrylic acid (or salt thereof)-Dialkylaminoalkyl (meth) acrylate (or salt and quaternized product thereof)
・ Polyglutamic acid and its salts. In addition, chelate resin, chelating agent, activated carbon, ozone water, ion exchange resin and ion exchange membrane, water absorbent resin, hydrogen peroxide solution, chlorine and liquid chlorine, sodium hypochlorite , Chlorine dioxide, bleached powder, chlorinated isocyanuric, diatomaceous earth, photocatalysts such as titanium oxide, secondary treatment agents such as biological treatment agents, and the like may be mixed or used together.
[0030]
In the case of using the aggregating treatment liquid and the agglomerate as water treatment, compost, and feed, respectively, mixing with or using a synthetic polymer flocculant may affect the environment and the human body. It is preferable to use the flocculant alone or in combination with other inorganic and natural products.
[0031]
The amount of the flocculant added to the suspension of treated water or the like varies depending on the type of suspension to be treated and the combination with other chemicals, but is generally 0.01 to 2000 mg / liter, more preferably 0.8. 1 to 500 mg / liter. If the addition amount of the flocculant is too small, the aggregation effect cannot be obtained, and if the addition amount is too large, the aggregation effect may be lowered.
[0032]
As described above, the flocculant containing at least one of moroheiya, this dried product, or this extract is more fragile than the conventional flocculants (for example, sedimentation rate, filtrate turbidity, filtration Excellent fabric peelability and cake moisture content. Furthermore, since these flocculants are natural products, they are safe for the human body and the environment, and can be obtained from renewable resources without consuming fossil resources like synthetic polymer flocculants. This makes it possible to use dehydrated cake that has been conventionally incinerated or landfilled as compost and feed, contributing to conservation of the global environment in terms of resource conservation, reduction of harmful substances, and effective use of waste. be able to.
[0033]
Furthermore, since these flocculants contain a lot of fiber components in plants, they are excellent in peelability from cakes and filter cloths and have a deodorizing effect on treated water and cakes.
[0034]
【Example】
Hereinafter, specific examples of the present invention will be described.
[0035]
Example 1
Morohaya with leaves and stems was added to water and applied to a mixer for shredding and extraction. The viscous aqueous solution containing the chopped solid of Morohaya thus obtained is designated as flocculant 1. The water-soluble component (water-soluble polymer content) in this viscous aqueous solution was 0.1%.
[0036]
Example 2
The dried powder of leaves, stems and roots of Morroheiya was used as flocculant 2. The purity of the solid content in the dried product was 95%.
[0037]
Example 3
50 ° C. warm water was added to the dried powder of Morohaya leaves, and the mixture was stirred and extracted. This filtrate was designated as flocculant 3. The water-soluble component (water-soluble polymer) in the obtained viscous aqueous solution was 0.2%.
[0038]
Example 4
Water was added to the dried powder of morohaya leaves and stirred and extracted. Next, ethanol was added to the filtrate, and the resulting precipitate was filtered and dried. This dried product was designated as flocculant 4. The purity of the solid content in the dried product was 97%.
[0039]
Example 5
A sodium hydroxide aqueous solution was added to Morohaya with leaves and stems, and the mixture was shredded and extracted using a mixer. This filtrate was designated as flocculant 5. The pH of this viscous aqueous solution was 8.5, and the water-soluble component (water-soluble polymer content) was 0.13%.
[0040]
Example 6
The flocculant 2 and a commercially available polyacrylamide partial hydrolyzate (hydrolysis ratio: 20 mol%) mixed at a weight ratio of 1: 1 were designated as flocculant 6.
[0041]
Example 7
A mixture of the flocculant 4 and a commercially available natural starch-based flocculant in a weight ratio of 2: 1 was designated as flocculant 7.
[0042]
Comparative Example 1
A polyacrylamide partial hydrolyzate (medium anionic polymer flocculant) is defined as flocculant a.
[0043]
Comparative Example 2
Constarch natural flocculant is flocculant b.
[0044]
Comparative Example 3
A copolymer of dimethylaminoethyl acrylate methyl chloride quaternized product and acrylamide (strong cationic polymer flocculant) is used as flocculant c.
[0045]
Comparative Example 4
Let chitosan be the flocculant d.
[0046]
Characteristic evaluation 1
First, a 1% by weight kaolin aqueous solution was prepared as a suspension for aggregation evaluation. Then, 100 ml of the suspension was placed in a 200 ml graduated cylinder with a stopper, and the flocculants of Examples and Comparative Examples were added to the suspension at a concentration of 1 ppm as a polymer or solid by a measuring pipette. The graduated cylinder was immediately stirred 10 times up and down, and then allowed to stand to measure the sedimentation rate and turbidity of suspended particles (after 1 minute of standing).
[0047]
The measurement results are shown in Table 1.
[0048]
[Table 1]

[0049]
From the results shown in Table 1, when the flocculants 1, 2, 3, and 5 containing the extract from Morohaya are used, the settling rate is larger than the flocculants a and b of the comparative examples that have been used conventionally. It can be seen that the agglomeration characteristics are excellent in terms of turbidity. Moreover, it turns out that the further outstanding aggregation characteristic can be acquired by mixing with a conventional product like the flocculant 6. FIG.
[0050]
Characteristic evaluation 2
First, a suspension for evaluating aggregation was prepared by adding 0.2% by weight of aluminum sulfate to a 4% by weight kaolin aqueous solution. Then, 100 ml of the suspension was placed in a 200 ml graduated cylinder with a stopper, and the flocculants of Examples and Comparative Examples were added to the suspension at a concentration of 5 ppm as a polymer or solid by a measuring pipette. The graduated cylinder was immediately stirred up and down 10 times and then allowed to stand to measure the sedimentation rate and turbidity of suspended particles (after 3 minutes of standing).
[0051]
The measurement results are shown in Table 2.
[0052]
[Table 2]

[0053]
From the results of Table 2, when coagulants 1, 2, 3, 5 containing an extract from moroheiya and aluminum sulfate are used in combination, coagulants a and b of comparative examples and aluminum sulfate are used in combination. It can be seen that the present invention exhibits excellent aggregation characteristics in terms of sedimentation rate and turbidity. Moreover, it turns out that the further outstanding aggregation characteristic can be acquired by mixing with a conventional product like the flocculant 6. FIG.
[0054]
Characteristic evaluation 3
First, as a suspension for aggregation evaluation, waste water from an electronic component factory (raw water is acidic and neutralized with slaked lime) (hydrogen ion concentration index (pH): 5.6, suspended substance concentration ( SS): 1.5 wt%) was prepared by adding 300 ppm of aluminum sulfate. Then, 100 ml of the suspension was put into a 200 ml graduated cylinder with a stopper, and the flocculants of Examples and Comparative Examples were added to the suspension at a concentration of 4 ppm as a polymer or a solid by a measuring pipette. Immediately, the graduated cylinder is stirred 10 times up and down, and then allowed to stand to settling speed and turbidity of the suspended particles (after 3 minutes of standing), the peelability between the cake after dehydration and the filter cloth, and the moisture content of the cake. Was measured.
[0055]
The measurement results are shown in Table 3. In the evaluation of peelability in the table, “A” indicates a very good state, “B” indicates a good state, and “B” indicates a slightly poor peel.
[0056]
[Table 3]

[0057]
From the results of Table 3, when coagulants 3, 4, and 5 containing an extract from moroheiya and polyaluminum chloride are used in combination, coagulants a and b of comparative examples and polyaluminum chloride are used together It can be seen that the present invention exhibits excellent agglomeration characteristics in terms of sedimentation rate, turbidity, peelability, and cake moisture content. Moreover, it turns out that the further outstanding aggregation characteristic can be acquired by mixing with the flocculant of a comparative example like the flocculant 7. FIG.
[0058]
Characteristic evaluation 4
First, mixed sludge (pH: 6.6, SS: 2.8% by weight) of a sewage treatment plant was prepared as a suspension for aggregation evaluation. The mixed sludge is stirred with a jar tester, and flocculant c or d is added to 0.6% by weight per suspended substance (SS). After further stirring, each flocculant is suspended in suspended substance (SS). 0.15% by weight per unit was added and stirred. Then, the mixture was allowed to stand after aggregation, and the sedimentation rate of sludge, the turbidity of the dehydrated filtrate, the peelability between the cake and the filter cloth, the moisture content of the cake, and the odor of the filtrate were measured.
[0059]
The measurement results are shown in Table 4. In the evaluation of peelability in the table, “A” indicates a very good state, “B” indicates a good state, and “B” indicates a slightly poor peel. The evaluation of the odor of the filtrate is ◎ if it is completely odorless and △ if it is slightly odorous.
[0060]
[Table 4]

[0061]
From the results of Table 4, when the flocculant 5 containing an extract from Morohaya is used in combination with the flocculant c or d of the comparative example, the settling velocity and turbidity are compared with the combined use of the flocculants of the comparative example. It can be seen that the present invention exhibits excellent agglomeration characteristics in terms of peelability and cake moisture content. Moreover, it was also confirmed that there is an effect of reducing the odor of the treatment liquid by using a flocculant containing an extract from moroheiya. Furthermore, by using together with the flocculant 5 and chitosan (flocculant d) which is a naturally produced flocculant, the dehydrated cake can be used as compost or feed.
[0062]
As can be seen from the characteristic evaluation 1 to characteristic evaluation 4, according to the flocculation method according to the present invention, by using the flocculating agent composed of an extract of moroheiya, superior flocculation characteristics as compared with the case of using the conventional flocculating agent, It can be seen that the effect of reducing odor can be obtained, and it can be used in any coagulation treatment such as industrial wastewater treatment and water and sewage treatment. Moreover, the coagulant | flocculant which consists of this moroheiya extract can further improve the coagulation effect by mixing or using together with the coagulant | flocculant currently used conventionally. In particular, the dehydrated cake can be used as compost or feed by mixing or using in combination with other naturally produced flocculants.
[0063]
【The invention's effect】
As apparent from the above description, according to the flocculant and the flocculant method according to the present invention, excellent flocculant characteristics and deodorizing effects can be obtained. Furthermore, since it uses a naturally produced flocculant, it is safe for the human body and the environment, does not consume fossil resources like synthetic polymer flocculants, and can be regenerated with renewable resources. As a result, cakes that have been dehydrated that were previously incinerated or landfilled can be used as compost and feed, and contribute greatly to the conservation of the global environment in terms of resource conservation, reduction of harmful substances, and effective use of waste. Can do.

Claims (7)

A flocculant characterized by containing at least one of Morohaya, this dried product, or this extract, and a polymer flocculant .   The flocculant according to claim 1, wherein the moroheiya or the dried product or the extract is treated with an acid and / or an alkali. A coagulation method comprising adding a flocculant containing at least one of moroheiya, this dried product, or this extract and a polymer flocculant to a suspension, and aggregating and separating fine particles.   The aggregating method according to claim 3, wherein the aggregating agent is treated with an acid and / or an alkali. The aggregating method according to claim 3, wherein the aggregating agent is mixed or used in combination with at least one of a coagulant auxiliary agent and an inorganic aggregating agent .   6. The aggregation method according to claim 5, wherein the polymer flocculant is selected from nonionic, anionic, cationic and amphoteric polymer flocculants.   The aggregating method according to claim 3, wherein the aggregating agent is mixed with or used in combination with a naturally produced aggregating agent.