JP2013006174A - Flocculant composition and flocculation method for purifying dye wastewater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flocculant composition and a flocculation method by which a COD value is lowered and decolorization is carried out for dye wastewater within a short time and in a fewer number of treatment steps.SOLUTION: The flocculant composition includes a component derived from Abelmoschus of Malvaceae, an inorganic flocculant, a pH adjustment agent, activated carbon, and a polymer flocculant. In addition, if necessary, an inorganic adsorption assisting agent such as a zeolite or the like may be added. The order to be added may be properly changed in accordance with the state of the dye wastewater. For example, in a non-threne-based dye wastewater, it is preferable to carry out the treatment by steps of adding the component derived from Abelmoschus of Malvaceae, the flocculant component, the pH adjustment agent, activated carbon, and the polymer flocculant in this order or by steps of adding the component derived from Abelmoschus of Malvaceae, the pH adjustment agent, the flocculant component, activated carbon, and the polymer flocculant in this order. The activated carbon loading may be also properly changed in accordance with the state of the dye wastewater.

Description

  The present invention relates to a coagulant composition and a coagulation method for dyeing wastewater, and more particularly to a coagulant composition and coagulation method for dyeing wastewater suitable for coagulating dyeing wastewater generated in a dyeing process.

The textile industry produces many products by dividing into spinning, weaving and dyeing processes. During these processes, in the dyeing and processing department, various colors are dyed using an optimum dye corresponding to the type of fiber. In the prior art, as waste water that is difficult to treat when a large amount of waste water is discharged, dye waste water generated in the fiber dyeing step can be cited.
First, in a state where the oil agent and the glue applied in the textile processing are contained, a bleaching step is further performed to remove impurities such as unnecessary pigments, and then the dye is used in the presence of a large amount of water. Since the dyeing process is carried out, a large amount of dyeing wastewater is generated at the dyeing factory, and the wastewater is colored, and if it flows directly into the river, the color will be mixed into the river, which will place a heavy load on the environment. . Therefore, in order to ensure the water quality standard for dyeing wastewater, the dyeing wastewater is discharged by diluting with a large amount of water. For this reason, most of the large amount of water used was discharged as factory effluent, leading to waste of water resources.

  As a dyeing method, for example, there is a dip dyeing method. Generally, a reactive dye is often used as a dye for dyeing cellulose fibers such as cotton and rayon because the dyeing method is very simple. That is, the reactive dye is a water-soluble dye having a direct dyeing property to cellulose fibers, and many of the reactive dyes are directly dyed on cellulose fibers in a neutral or weak alkaline dye bath. Specifically, for example, when a fiber is placed in a dye bath prepared by adding a neutral salt to a dye aqueous solution and heated, most of the dye in the dye bath is exhausted by the fiber, and the fiber is easily removed. Can be dyed. Other dyes for dyeing cellulose fibers include, for example, selenium dyes. A typical selenium dye is indigo blue, which is used as a blue dye for dyeing jeans and the like. After dyeing, the fiber taken out from the dye bath is washed away with excess dye in the soaping process, and the dye is fixed in the fixing process to complete a dyed processed product.

  In addition, dyeing is performed using various dyes such as acid dyes and disperse dyes, pigments, and dyeing assistants. When dyeing an object to be dyed or washing with water, a large amount of dye wastewater containing dyes, pigments, etc. is generated. Dyeing wastewater is mainly composed of substances such as dyes, pigments, and glue.

  Dyeing wastewater has high environmental loads such as biochemical oxygen demand (hereinafter referred to as “BOD”) and chemical oxygen demand (hereinafter referred to as “COD”). Therefore, conventionally, BOD and COD are generally processed to a regulated value or less and discharged.

However, for chromaticity components, the discharge standard is not set except for some areas, and in the prior art, if the BOD standard and the COD standard are satisfied, it may be discharged into the river at that time. However, if colored water is discharged into a river with a large amount of dye remaining, there may be a problem in terms of environmental conservation and environmental beautification. Therefore, in the past, attempts have been made to remove the dye from the dye waste water.
In the prior art, as a method for removing dye from dye wastewater, a coagulation precipitation method, a flotation separation method, an activated sludge method, an electrolysis method, an ozone oxidation method, and the like are known.

JP-A-7-313804 JP-A-10-212187 JP 2004-261688 A

  However, even if a small amount of dye is contained, it appears to be colored visually. Therefore, the coloration of wastewater caused by the dye is considered difficult to remove by conventional wastewater treatment, and in particular, cellulose fiber. It is known that the reactive dye used in the above method has a low exhaustion rate to the fiber and the dye is water-soluble, so that the dye tends to remain in the dyeing wastewater, and decolorization of the dyeing wastewater is particularly difficult.

  In the coagulation sedimentation method or the flotation separation method, a coagulant is injected into the raw water of the coagulation tank, while the raw water is stirred at a low speed to form a floc and slowly settled or floated to recover. Yes. However, in general, when dyeing wastewater, particularly reactive dye-containing wastewater, is treated using an inorganic flocculant such as PAC, a colloidal substance having extremely poor sedimentation is generated. For this reason, flocs formed in the raw water by the flocculant are slowly settled or floated and collected, so that it takes a considerable amount of time for the flocs to settle or float. A large coagulation tank must be prepared. For this reason, it is difficult to say that the effect of precipitating and insolubilizing a water-soluble dye dissolved in water is sufficient only with an inorganic flocculant such as PAC. Further, when only the polymer organic flocculant is used, the dye substance cannot be sufficiently precipitated and cannot be decolorized.

The activated sludge method aims to perform the microorganism treatment after reducing the polymer compound contained in the wastewater to a state in which microorganisms can supplement, and to perform both BOD and COD reduction and decolorization. According to the general activated sludge method, the wastewater is adjusted to around pH 6-8, and then forced aeration (aeration) is performed to grow aerobic activated sludge bacteria. The activated sludge bacteria are directly or oxidatively decomposed. Or it is made to hydrolyze and the contaminant in waste water is taken in as a nutrient. The activated sludge bacteria that have taken in nutrients form sedimentary flocs. This bacterial mass is activated sludge, and the supernatant water that has been naturally submerged flows into a river or the like as treated water. On the other hand, activated sludge is squeezed so that it can be easily transported to remove moisture, and then landfilled or incinerated. Thus, the method of adding wood waste, large sawdust, etc. to activated sludge and fermenting it for composting can be considered.
However, in the activated sludge method, management for composting takes too much time and is impractical. Therefore, as a treatment method for dyeing wastewater, a high molecular compound of dye is supplemented by microbial treatment, and BOD and COD are reduced. The technology to achieve decolorization at the same time has not yet reached the established level.

Next, as an ozone method, for example, the technique for treating dye-containing wastewater described in JP-A-2004-261688 is a method of decomposing organic matter by performing biological treatment after ozone treatment of dye-containing wastewater. In addition, a method for treating dye-containing wastewater is characterized in that the wastewater is decolorized. Thus, since ozone has a high decoloring action, the dye is decomposed and decolorized with ozone.
However, ozone treatment is generally expensive and takes a long time to treat a large amount of dye wastewater, and is not actually used in dye factories.

  As described above, all of the conventionally known techniques have problems, but considering that there is a large amount of dye wastewater to be treated, a method that requires treatment time is not practically suitable. Therefore, it is considered that it is relatively effective in the prior art to achieve a decoloring process by floc formation using a flocculant.

  However, the conventional flocculant is typically effective for colloidal wastewater, and in particular, can exert a high effect on hydrophobic colloidal wastewater. However, as a general rule, when the target object is not a colloidal solution, flocculation is difficult just by adding the prior art flocculant as it is. In other words, the prior art flocculant exerts a high agglomeration effect on those charged in a molecularly large colloidal state, but the dyeing wastewater in which the target object is mixed in large quantities with dye substances smaller than colloidal particles. Therefore, it cannot be aggregated with the prior art flocculant as it is.

  Furthermore, in the wastewater from the dyeing process that is discharged as the factory wastewater, the oil agent and the paste agent that are applied in the textile process, the impurities such as wax, pectin, and pigment that have adhered to the fiber raw material, and further the processing step Since various pollutants such as residues of dyes and chemical auxiliaries and textile wastes used in Japan are included, they are subject to pollution problems, and wastewater treatment cannot be optimistic for the dyeing industry. Yes.

  Then, an object of this invention is to provide the coagulant | flocculant composition and the coagulation processing method which can decolorize waste_water | dye drainage in a short time.

  In order to solve the above-mentioned problems, a first flocculant composition of the present invention is a flocculant composition for purifying dyeing wastewater such as wastewater containing dye as a liquid to be agglomerated, It is a flocculant composition for purifying dyed wastewater containing a Troloae species-derived component, a flocculant component, a pH adjuster, activated carbon, and a polymer flocculant. There are variations in which the pH adjuster is omitted depending on the components contained in the dyeing wastewater and the conditions of the purification treatment.

  Examples of the order in which the respective components of the first flocculant composition of the present invention are charged include, for example, the components derived from the genus Troy's family, the flocculant component, the pH adjuster, the activated carbon, and the polymer flocculant in this order. Alternatively, the order of input may be changed. Further, the flocculant composition may be added at the same time. In this case, since the work procedure is omitted, the efficiency of the treatment process can be further improved.

  As described above, the present inventor, as the flocculant composition of the present invention, puts a component derived from the genus Troy's family, flocculant component, activated carbon, pH adjuster, polymer flocculant, etc. Through experiments, it was confirmed that decolorization can be realized while reducing COD. As described above, the present invention in which the dyed wastewater can be simultaneously reduced and decolored in a short time by using the flocculant is very advantageous because the process using the conventional large-scale equipment can be greatly simplified and the processing time can be shortened.

The second flocculant composition of the present invention comprises a component derived from the genus Troy's family, a flocculant component, a pH adjuster, and a polymer flocculant. This second agglomeration method of the present invention has no component of activated carbon as compared with the first agglomeration method. There are variations in which the pH adjuster is omitted depending on the components contained in the dyeing wastewater and the conditions of the purification treatment.
As the order of introduction of each component, for example, the component derived from the genus Troy's family, the flocculant component, the pH adjuster, and the polymer flocculant may be added in this order, or the order of addition may be changed. The flocculant composition may be added simultaneously.

The second flocculant composition of the present invention includes a component derived from the genus Troy's family, and is adjusted so as to lower the pH value by using in combination with a flocculant component such as PAC or an acidic pH adjuster. By summing, it is possible to simultaneously reduce COD and decolorize the dyed wastewater without using activated carbon, and the effect of aggregating the dyed substance with adsorption in a short time can be obtained. Adjustment to lower the pH value does not necessarily mean only adjustment to the acidic side smaller than pH 7. Here, for example, relaxation of pH 11 to pH 8 is included in the adjustment to lower the pH value.
The present inventor has confirmed through experiments that COD remaining in the dyeing wastewater can be reduced and decolorization can be realized by a component derived from the genus Troy's family and pH adjustment.

  In order to facilitate pH adjustment in the first flocculant composition of the present invention and the second flocculant composition of the present invention, an acidic pH adjuster is used in addition to the flocculant component, and the flocculant component is added. It is preferable to adjust the pH appropriately according to the target wastewater, such as further lowering the pH value of the later solution and then neutralizing it to promote the aggregation reaction. The present inventor, for example, in the case of dyeing wastewater using a selenium dye, after adding the component derived from the genus Troyceae, the pH is adjusted to lower the pH value of the solution and then neutralized with a pH adjuster It was clarified by adjustment that COD reduction and decolorization of dyed wastewater can be simultaneously performed without using activated carbon.

Moreover, the structure which uses together the component derived from the mallow family Troloaoi genus and adsorption auxiliary components is also possible. By using the adsorption auxiliary component in combination, it is possible to improve the sedimentation property of the sludge after coagulation and separation, and it is possible to easily adsorb substances remaining in the dyeing waste water.
For example, as an adsorption auxiliary component having adsorption ability, there is zeolite. The zeolite may be added in the order of, for example, before or after the introduction of the component from the genus Troyceae, or at the same time as the component from the genus Troy's.

In addition, there exist the following as dyeing waste_water | drain which can perform waste_water | drain processing by the 1st flocculant composition and 2nd flocculant composition of this invention.
For example, the dyeing wastewater is wastewater generated by a dyeing process using any one of reactive dyes, direct dyes, sulfur dyes, naphthol dyes, or combinations thereof for dyeing cellulosic fibers. Further, for example, the dyeing wastewater is wastewater generated by a dyeing process using any one of acid dyes, metal complex dyes, acid mordant dyes, reactive dyes, or combinations thereof for dyeing protein fibers. For example, the dye waste water is waste water generated by a dyeing process using a disperse dye for dyeing polyester fibers. For example, the dye waste water is waste water generated by a dyeing process using a cationic dye for dyeing acrylic fibers. Further, for example, the dye waste water is waste water generated by a dyeing process using a selenium dye for dyeing cellulosic fibers.
Moreover, for example, the dyeing waste water is waste water generated by a dyeing process using a pigment.

Next, the above-mentioned component from the genus Troloae is described.
For example, a dried and crushed okra can be used as the component derived from the genus Troy's. Moreover, the liquid obtained by crushing okra or the extract extracted from the okra may be sufficient as the component derived from the genus Troeroaoi. The part to be used as the raw material of okra includes any of okra pods and pods, seeds, flowers, stems, roots, or combinations thereof.

  Next, as the above-mentioned flocculant composition, for example, a flocculant component containing a polyvalent metal salt can be used. For example, polyaluminum chloride or a sulfate band is preferable.

  As the pH adjuster, sulfuric acid, carbonic acid, hydrochloric acid, ferrous sulfate, ferric sulfate, ferric chloride and the like can be suitably used as the acidic pH adjuster. As the alkaline pH adjuster, sodium hydroxide, potassium hydroxide, calcium hydroxide, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium carbonate, potassium carbonate, calcium carbonate or the like or a combination thereof can be preferably used. Is possible.

  Moreover, although activated carbon is not specifically limited, It is preferable that it is activated carbon with big adsorption capacity.

  As the polymer flocculant, a polyacrylamide organic flocculant in which a carboxyl group, an amide group, a sulfone group, etc. are arranged on a water-soluble organic substance of a cationic acrylic, anionic acrylic or nonionic acrylic polymer is used. It is preferable to use it.

According to the coagulant composition for dyeing wastewater of the present invention, the codification treatment method using the coagulant composition including the mallow family Troloae mushroom-derived component and activated carbon enables COD reduction and decolorization of the dyeing wastewater to be simultaneously performed. The effect of agglomerating the residue in the dye wastewater over time is obtained.
In addition, depending on the nature of the target wastewater, using a flocculant composition containing components from the genus Troy's genus Troyceae, adjusting to reduce the pH value once, and then by a coagulation treatment method to neutralize the activated carbon It is possible to reduce the COD and decolorize the dyed wastewater without using it, and the effect of aggregating the residue in the dyed wastewater can be obtained.
In the conventional aggregating treatment using the aggregating agent and the aggregating treatment method using the same, the stirring time and the aggregating time are long, but in the aggregating agent composition of the present invention and the aggregating treatment method using the same, the agglomeration takes a short time. Processing can be completed.

  Hereinafter, examples of the flocculant composition of the present invention and the coagulation treatment method using the same will be described with reference to the drawings. However, it goes without saying that the scope of the present invention is not limited to those shown in the following examples.

The flocculant composition of the present invention can include the following first flocculant composition and second flocculant composition as components.
The first flocculant composition of the present invention is a flocculant composition comprising a component derived from the genus Troy's family, a flocculant component, a pH adjuster, activated carbon, and a polymer flocculant.
The second flocculant composition of the present invention is a flocculant composition including a component derived from the genus Troy's family, a flocculant component, a pH adjuster, and a polymer flocculant.
As described above, both the first flocculant composition of the present invention and the second flocculant composition of the present invention contain the common mallow family Troloae. Further, although depending on the properties and pH of the target wastewater, in both the first and second flocculant compositions, the pH adjuster can be omitted in both cases.

In the case of the first flocculant composition, activated carbon is contained together with a component derived from the genus Troloae. In the case of the second flocculant composition, a component derived from the genus Troy's family is included, while activated carbon is not included, but a device for pH adjustment is incorporated.
In any of the first flocculant composition and the second flocculant composition, an adjunct auxiliary component such as zeolite can be used together with a mushroom Troloae genus-derived component. It demonstrates as a type which used the component together.

First, classify and organize dyeing wastewater to be treated.
There are various types of dye wastewater. For example, as the cellulosic fiber dyeing waste water, there is waste water generated by a dyeing process using any one or combination of reactive dyes, direct dyes, sulfur dyes, and naphthol dyes for dyeing cellulose fibers. Another example of the cellulose fiber dyeing waste water is waste water generated by a dyeing process using a selenium dye for dyeing cellulose fibers.

Examples of other fibers include protein-based fiber dye waste water. Wastewater generated by a dyeing process using any one or a combination of acid dyes, metal complex dyes, acid mordant dyes, reactive dyes, or a combination of dyes that dye protein fibers.
Further, for example, there is polyester fiber dyeing waste water. It is the waste_water | drain produced | generated by the dyeing process using the disperse dye which dye | stains a polyester fiber.
For example, there is acrylic fiber dyeing waste water. It is waste water generated by a dyeing process using a cationic dye for dyeing acrylic fibers.

The actual dyeing wastewater contains various substances depending on the substances remaining in the spinning process before dyeing, the dye used in the dyeing process, and post-treatment after dyeing. Depending on the state of drainage, it may be determined whether to use the first flocculant composition of the present invention or the second flocculant composition of the present invention.
For example, for dyeing wastewater when using a selenium dye, not only the first flocculant composition of the present invention but also the second flocculant composition of the present invention reduces the COD value. The decoloring process is also possible at the same time. The first flocculant composition of the present invention is often efficient for dyeing wastewater when a dye other than selenium dye is used.

  Hereinafter, each component regarding the flocculant composition of this invention is demonstrated. In addition, it is not limited only to these examples, It is also possible to add another structural component auxiliary.

First, the components derived from the genus Troloae are described.
The component derived from the genus Trolooaoi is a component derived from plants such as angiosperms, dicotyledons, mallows, mallows, and abelmoschus. 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. In addition to pectin, galactan, araban, mucin and the like, this mallow family Troloaoi genus component includes okra components such as minerals, calcium, potassium, vitamins A, B1, B2 and C. Thus, if the component derived from the genus Troy's family is dried and pulverized, the surface area of the genus Troy's family is increased, etc. If the dried and pulverized components are used, adsorption and aggregating action by the flocculant composition of the present invention are more likely to occur.

The particle size of the powdery body constituting the component of the genus Troy's family is preferably 18 mesh or less, and more preferably 40 mesh or less. Thus, it is preferable that the particle size of the component derived from the genus Troy's family is fine in consideration of the degree of dispersion and the reactivity when the flocculant composition is introduced into the wastewater to be treated.
Moreover, you may use the liquid obtained by crushing the plant of the mallow family Troloaoi, or the extract extracted from the plant of the mallow family Troloaoi.

  In addition, the component derived from the genus Troy's family is the raw material of the epidermis part of the plant belonging to the genus Troy's family, the fiber wall forming the inner wall inside (hereinafter also referred to as “inner fiber wall”) and the seeds together. Even what was used may be selected and used as a raw material by combining any of these. For example, in the case of okra, all of fruits, pericarps, persimmons, and seeds are used as raw materials together, and any one of them is selected and used as a raw material. Also good. Moreover, even if all parts such as okra leaves, flowers, stems, and roots are used together as raw materials, they may be used as raw materials by selecting one of these in combination. .

  In addition, the component derived from the genus Troy's family is the genus Troy's family from the viewpoint of omitting the labor of selecting the site, effectively using raw materials such as okra, etc. It is possible to use a plant prepared from the whole part of the plant belonging to No. 2 as a component derived from the genus Troloae.

Next, the adsorbing auxiliary component used together with the component derived from the genus Trolloaid is described.
This adsorbing auxiliary component is used in combination with the above-mentioned component of the genus Troloae, and is a component that assists in adsorbing a dye substance or the like.
As an example of the “adsorption auxiliary component” in the present invention, for example, zeolite can be used to assist the adsorption of dyed ions. There are two types of zeolites: natural zeolite and artificial zeolite. The main component is a generic name for silica (silicon dioxide) and alumina (aluminum oxide) aluminosilicates with relatively large voids in the crystal structure. It is.

The surface of the zeolite has a porous structure, and this porous structure has the ability to adsorb molecules and ions in the aqueous solution.
Zeolite also has ion exchange capacity. Zeolite has a structure in which silica (silicon dioxide) and alumina (aluminum oxide) are bonded via oxygen, but due to the shared charge generated in the skeleton, the charge is insufficient around the aluminum atoms, and cations There is a need to compensate. Therefore, it has a function of adsorbing cations.
As described above, zeolite can also support the adsorption of the dye substance present in the waste water, and can compensate for the action of the above-mentioned components of the genus Troyaeaceae and promote the adsorption of the dye substance.

Depending on the type and amount of dyeing contained in the wastewater, and the type and amount of other substances contained in the wastewater, various adsorption auxiliary components can be combined or used together. For example, silicate clay, other active silicic acid, sodium alginate, bentonite, and the like can be suitably used.
For example, silicate clay is mainly composed of silicon dioxide (SiO2), aluminum oxide (alumina) (Al2O3), sodium oxide (Na2O), iron oxide (Fe2O3), calcium oxide (CaO), potassium oxide (K2O). ), Magnesium oxide (MgO), moisture (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 (SiO2) is 72.96%, aluminum oxide (Al2O3) is 9.92%, and oxidation is performed. Sodium (Na2O) 4.98%, iron oxide (Fe2O3) 4.95%, calcium oxide (CaO) 3.27%, potassium oxide (K2O) 0.13%, magnesium oxide (MgO) A trace or the like containing 3.81% of moisture (H2O) can be preferably used. Specifically, the product name “Million” manufactured by Soft Silica Co., Ltd., the product name “Iwamilite” manufactured by Mitsui Kinzoku Resources Development Co., Ltd., and the like can be suitably used as the silicate clay.

Next, among the components of the flocculant composition of the present invention, the flocculant component will be described.
As the flocculant component in the flocculant composition of the present invention, a flocculant containing a polyvalent metal salt 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, polyaluminum chloride (PAC; Al2 (OH) mCl6-m), aluminum sulfate (sulfuric acid band; Al2 (SO4) 3 · nH2O) (Japanese Industrial Standards standard number JISK1423), etc. can be suitably used. It is.

  In addition, the flocculant component may be a combination of one or more substances selected from polyvalent metal salts such as PAC (polyaluminum chloride) and sulfuric acid band (aluminum sulfate) described above, It may contain a substance more than that as a main component and other substances as subcomponents.

Next, the activated carbon component among the components of the flocculant composition of the present invention will be described.
There are various products as an example of the “activated carbon component” in the present invention, and the main component is porous carbon. The surface of the activated carbon has a porous structure, and this porous structure has the ability to adsorb molecules and ions in the aqueous solution. For example, a product name sample M-TC (powder) of Suntex Co., Ltd. can be suitably used.

Next, the polymer flocculant will be described.
The polymer flocculant may be classified into any of the attributes of cationic, anionic and nonionic, and a carboxyl group, an amide group, a sulfone group, etc. are added to the water-soluble organic substance of the acrylic polymer. The arranged one can be suitably used as a flocculant component.
Crosslinking is promoted by the polymer flocculant, and the dyed waste water is formed as a larger block of floc.

Next, pH adjustment and a pH adjuster will be described.
As the pH adjuster, sulfuric acid, carbonic acid, hydrochloric acid, ferrous sulfate, ferric sulfate, ferric chloride and the like can be suitably used as the acidic pH adjuster. As the alkaline pH adjuster, sodium hydroxide, potassium hydroxide, calcium hydroxide, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium carbonate, potassium carbonate, calcium carbonate or the like or a combination thereof is preferably used. Is possible. The pH adjuster may contain one or more substances as the main component and other components as subcomponents.

In the flocculant composition of the present invention, pH adjustment is important. In particular, pH adjustment is important in the second flocculant composition of the present invention.
The inventor, depending on the target dyeing wastewater, after adding a mallow family Troloae genus-derived component and an adsorption assisting component, in a state in which a flocculant component such as PAC is added, after once reducing the pH value of the solution, As in the case of using the first flocculant composition, an effective aggregating action can be obtained in a short time by the procedure of neutralizing with a neutralizing agent and then adding a polymer flocculant. As the value decreased, we found a phenomenon in which drainage was decolorized and transparency increased. Therefore, in the present invention, it is preferable to perform pH adjustment in which the pH value of the solution is temporarily lowered in the aggregation step using an inorganic flocculant such as PAC.

Here, when an inorganic flocculant such as PAC is added, the pH value of the solution tends to decrease. If a state where the pH value of the solution is decreased only by adding PAC, an acidic pH adjuster is added. In some cases, it may be possible to purify dyed wastewater. However, depending on the state of the solution, the pH value of the solution may not be sufficiently lowered even when a flocculant component such as PAC is added. In view of this, a device for adjusting the pH is provided by once reducing the pH value by introducing an acidic pH adjuster such as sulfuric acid, carbonic acid, hydrochloric acid, ferrous sulfate or the like.
In addition, after adding flocculant components such as PAC, the pH of the solution is once lowered and stirred, and then an alkaline pH adjuster such as sodium hydroxide is added to return the pH to neutral.

Next, a description will be given of a procedure for agglomeration treatment and decolorization treatment of dyeing waste water.
In addition, as a processing step of the aggregating treatment using the aggregating agent composition of the present invention, it is only necessary to add and stir the dyed waste water, and it is not particularly necessary to heat or pressurize.
Hereinafter, first, the charging procedure of the first flocculant composition is summarized, and then the charging procedure of the second flocculant composition is summarized.

[Components of first flocculant composition and their order of introduction]
As a treatment using the flocculant composition having the above composition, firstly, a component derived from the genus Troy's family is introduced, then, after the flocculant component is introduced, a pH adjuster is introduced to adjust the pH, and then In addition, it is possible to agglomerate the dye wastewater only by a simple treatment process in which activated carbon is charged and finally the polymer flocculant is charged, and the process is advanced while repeating charging and stirring. Further, in the charging order, the flocculant composition may be charged simultaneously. In addition, the form which uses an adsorption assisting component together with the component derived from the genus Troy's genus may be used.
Regarding the processing time of the aggregating treatment using the flocculant composition of the present invention, however, the step of allowing the aggregating treatment target liquid to stand until the agglomerate settles or recovering the agglomerated agglomerated material from the aggregating treatment target liquid. However, as will be described later, at the experimental level, the process is completed in a short time of about 5 to 10 minutes even if the stirring of each process is long.

Hereinafter, each step of the aggregating treatment using the first aggregating agent composition of the present invention will be described.
[Adsorption process using a component from the genus Trolloaid and adsorption auxiliary component]
This is a process in which components derived from the genus Troy's family are introduced and the components remaining in the dye wastewater are adsorbed. For example, this is a step of introducing a component derived from the genus Troy's genus and an adsorbing auxiliary component having adsorbability such as zeolite and adsorbing the component remaining in the dyeing waste water. For example, stir for about 5 minutes.
In addition, the adsorption process by the mallow family troolo mallow genus component and the adsorption process by the adsorption auxiliary component may be performed simultaneously. First, the mushroom troro mallow genus component is added and stirred for about 1 minute, and then the adsorption auxiliary component is added. It may be a step of stirring.

[Aggregating step with inorganic coagulant]
This is a step of adding an inorganic flocculant to agglomerate the components adsorbed by the mushroom Troloae mite-derived component or the adsorption auxiliary component. For example, add PAC and stir for 1 minute.

[PH adjusting step with pH adjusting agent]
For the flocculation treatment using the first flocculating agent composition of the present invention, it may be determined whether or not the pH adjustment after the addition of the inorganic flocculating agent is performed on a case-by-case basis depending on the type and state of the dyeing waste water. . For example, in the case of dyeing wastewater using a direct dye, it is often possible to reduce the COD value of the dyeing wastewater to some extent and perform decoloring without performing this pH adjustment step. However, when this pH adjustment step is performed, the effect of further reducing the COD value or clarifying the solution is often obtained as compared with the case where the pH adjustment step is not performed.
As used herein, the pH adjustment step refers to, for example, when the pH value of the solution is not sufficiently lowered by the introduction of the inorganic flocculant described above, an acidic pH adjuster is added, the pH value is once reduced, and then In this step, an alkaline pH adjuster is added to neutralize the solution and promote aggregation. By once reducing the pH value and neutralizing it again by neutralization, the aggregation of molecules that cannot be adsorbed in the adsorption step using the component derived from the genus Troloae can be promoted. For example, sodium hydroxide solution is added and stirred for 1 minute.

[Activated carbon charging process]
Activated carbon is used to adsorb unadsorbed substances remaining in the solution.
The pH adjustment process in the previous process promotes the aggregation of molecules that could not be adsorbed by the adsorption process using the components derived from the genus Troloae, which is the preceding process, and the adsorption process using the adjunct auxiliary component, but adsorbs other unadsorbed substances. can do. For example, stir for 5 minutes.

[Aggregating step with polymer flocculant]
In this step, a polymer flocculant is added and components that have been aggregated up to the previous step are crosslinked to form large flocs. For example, as a polymer flocculant, a polyacrylamide organic flocculant in which a carboxyl group, an amide group, a sulfone group, etc. are arranged in a water-soluble organic substance of a cationic, anionic or nonionic acrylic polymer is added and stirred. To do. For example, stir for 5 minutes.
Through the above treatment steps, the wastewater containing the dye is agglomerated and separated.

[Second flocculant composition components and their order of introduction]
Next, each step of the aggregating treatment using the second aggregating agent composition of the present invention will be described.
The adsorption step using the mallow family Troloae genus-derived component and the adsorption auxiliary component, and the aggregation step using the inorganic flocculant may be the same as the steps in the aggregating treatment using the first flocculant composition of the present invention described above.

[PH adjusting step with pH adjusting agent]
The pH adjustment is important for the aggregating treatment using the second aggregating agent composition. In particular, in the case of dyeing wastewater using selenium dye, the COD value can be effectively reduced and decolored by the pH adjustment step after the addition of the inorganic flocculant. In particular, when the pH value of the solution is not sufficiently lowered due to the introduction of the inorganic flocculant described above, the acidic pH adjuster is introduced, the pH value is adjusted and then lowered, and then the alkaline pH adjuster is introduced. In this step, the solution is neutralized to promote aggregation. By once reducing the pH value and neutralizing it again by neutralization, the aggregation of molecules that cannot be adsorbed in the adsorption step using the component derived from the genus Troloae can be promoted. Here, for example, sodium hydroxide solution is added and stirred for 1 minute.

[Aggregating step with polymer flocculant]
In this step, a polymer flocculant is added and components that have been aggregated up to the previous step are crosslinked to form large flocs. It may be the same as the step in the aggregating treatment using the first aggregating agent composition of the present invention described above. For example, stir for 5 minutes.

  About the input amount of each component, since it changes with kinds, properties, etc. of drainage, it can adjust suitably.

Through the above treatment steps, the wastewater containing the dye is agglomerated and separated.
Various auxiliary steps and preliminary steps can be added to the above basic processing steps. For example, in both the first flocculant composition and the second flocculant composition described above, the first treatment step was the introduction of a component derived from the genus Troyae, but the dyeing effluent was greatly inclined to be alkaline. In the case of the state, a treatment process in which an acidic pH adjusting agent such as sulfuric acid is introduced may be effective in order to reduce the alkaline strength prior to the introduction of the component from the genus Troy's family. Similarly, in the case of a strongly acidic dyeing effluent, it is also effective to add an alkaline pH adjuster and neutralize it beforehand. The step of neutralizing the pH may be performed first or may be performed within the processing step.

Hereinafter, experimental examples including Examples and Comparative Examples of aggregating treatment for dyed wastewater using the aggregating agent composition of the present invention will be shown. In addition, this invention is not limited only to these examples.
As examples of the flocculant composition, the followings were used as components from the genus Troy's family, adsorption assisting component, flocculant component, pH adjuster, activated carbon, and polymer flocculant, unless otherwise specified.

[Ingredients from the genus Troloaoi]
Unless otherwise specified, powdered bodies obtained by crushing and drying okra fruits and fruits of (1) were used.
(1) Powdered body obtained by crushing and drying okra fruit and fruit (2) Powdered body obtained by crushing and drying okra fruit and fruit in water (3) Okra fruit and Liquid obtained by grinding fruit (4) Extract extracted from okra fruit and fruit (5) Powder obtained by crushing and drying okra stem and root (6) Crushing okra stem and root (7) Liquid obtained by crushing okra stems and roots (8) Extract extracted from okra stems and roots [Adsorption auxiliary component]
As an adsorption auxiliary component, zeolite (product name “Iwamilite” manufactured by Mitsui Metal Resources Development Co., Ltd.) was used.
[Flocculant component (polyvalent metal salt)]
As the flocculant component, PAC (containing 10% as PAC Al2O3 manufactured by Sakai Synthetic Chemical Co., Ltd.) was used.
[PH adjuster]
Sulfuric acid was used as the acidic pH adjuster. Sodium hydroxide (Daiwa Pharmaceutical Co., Ltd. caustic soda) was used as the alkaline pH adjuster.
[Activated carbon component]
As the activated carbon component, activated carbon (product name “Sample M-TC” manufactured by Suntex Co., Ltd.) was used.
[Polymer flocculant]
As the polymer flocculant, a polyacrylamide organic flocculant (product name “Diafloc” manufactured by Dianitics Co., Ltd.) was used.
[Laboratory instrument]
A pre-prepared flocculant composition according to the present invention is charged into a beaker (IWAKI borosilicate glass (JIS R 3503 compliant), outer diameter φ90 mm, height 120 mm, capacity 500 ml) under stirring conditions. The experiment was conducted.
[Measuring method]
CODMn was measured based on JIS K 0102 (oxygen consumption at 100 ° C.). The chromaticity before and after the treatment was measured with a spectrophotometer UV-200 (manufactured by Shimadzu Corporation) after the sample was diluted 10 times.

[Processed dye wastewater]
The following specimens were prepared as samples of dye waste water. Samples 1, 2, 3, and 6 were tested by obtaining waste water actually discharged from a dyeing factory or the like. This is an example of actual drainage in which wastewater generated not only in the dyeing process but also in other processes in the dyeing factory is mixed. Samples 4 and 5 were prepared by referring to the composition of each dye actually used in a dyeing factory or the like.
Sample 1. Dyeing plant wastewater dyed with reactive dyes on cotton etc. (hereinafter referred to as non-slen dyeing wastewater)
Sample 2. Dyeing wastewater dyed with selenium dye (hereinafter referred to as selenium dyeing wastewater)
Sample 3. Dyeing wastewater dyed with disperse dye (hereinafter referred to as disperse dyeing wastewater)
Sample 4. Dyeing wastewater dyed with acid dye Sample 5. Dyeing wastewater dyed with cationic dye Sample 6. Pigment wastewater dyed with red pigment

Example 1 Experiment Using Non-Slen Dyeing Drainage As Example 1, an experiment was performed on 500 mL of non-slen dyeing wastewater using the first flocculant composition of the present invention. First, add 25 mg of the mushroom Troloae mushroom component and 400 mg of zeolite, stir for 5 minutes, add 1 to 2 ml of PAC, stir for about 1 minute, and then add 6% sodium hydroxide to adjust the pH. Adjust to gender. Next, 1 g of activated carbon is added and stirred for 5 minutes, and then 2.5 mg of a polymer flocculant is added and stirred for 5 minutes.

[Comparative Examples 1-3]
In the above Example 1, the following comparative experiment was performed.
In Comparative Example 1, the pH adjusting agent in the treatment pattern using the first flocculant composition of the present invention was changed in order, and the same amount of alkaline pH adjusting agent as in Example 1 was added before PAC. It is a pattern to put. That is, an effective charging order was examined as a processing procedure using the first flocculant composition of the present invention.
Comparative Example 2 is a pattern using the second flocculant composition of the present invention, and is obtained by removing activated carbon from Example 1.
Comparative Example 3 is a pattern in which only activated carbon is added and the adsorption of the dye substance is observed as a comparative experiment. That is, an experiment is conducted as to whether the action of other components is effective as in the present invention, or whether the action is caused by decolorization only with activated carbon. In Comparative Example 3, only the same amount of activated carbon as in Example 1 was added, stirred for 10 minutes, and centrifuged (3000 rpm, 5 minutes), and then CODMn and absorbance were measured.

The results are shown in Table 1, FIG. 1 and FIG.
First, it was confirmed that the treated water of Example 1 could be reduced to 56 mg / l when the COD value of the raw water of the non-slen dyed wastewater was 190.8 mg / l in the COD values of Table 1. Moreover, when FIG. 1 is seen, the chromaticity of the supernatant water of Example 1 is also improved significantly. From these results, it is possible to effectively agglomerate non-stained dyed wastewater by using the first flocculant composition of the present invention, and to reduce the COD value and remove the color. It was confirmed that it was obtained at the same time.
In addition, in Comparative Example 1 in which the order of introducing the pH adjusting agent was changed, it was confirmed that the COD value and the absorbance were reduced. However, since Example 1 obtained more effective results, the non-slen dye wastewater As a treatment procedure using the first flocculant composition of the present invention, it was confirmed that the charging order of Example 1 was the most effective.
Further, in Example 1 and Comparative Example 2, when components other than activated carbon are fixed and activated carbon is charged and activated carbon is not charged, there is a clear difference in results depending on the presence or absence of activated carbon. Has occurred. Therefore, it can be seen that the presence of activated carbon is important. However, in Example 1 and Comparative Example 1 and Comparative Example 3, the components of the activated carbon were fixed, and the case where there was no other component such as a component derived from the genus Troyceae was compared with the case where there was no other component. It turns out that the effect is not fully obtained.

  If these results are integrated, the active ingredient is the component derived from the genus Troy's family, the flocculant component, the pH adjuster, the activated carbon, and the polymer flocculant, which are the components of the flocculant composition of the present invention. In addition, it was confirmed that by adding them in the above-described procedure, the dyeing waste water can be effectively aggregated, the COD value can be reduced, and decoloring treatment, which has been considered difficult in the past, can be simultaneously performed.

[Example 2] Experiment using non-slen dyed wastewater (in combination with acidic pH adjuster)
As Example 2, an experiment was carried out to further reduce the pH after charging the PAC using an acidic pH adjuster with respect to the non-slen dyed waste water similar to the waste water used in Example 1. As a procedure, after adding the same amount of PAC as in Example 1, only a portion where sulfuric acid is added as an acidic pH adjuster is added so that the pH becomes 4 to 5.

[Comparative Example 4]
A comparative experiment was performed on the above Example 2 as Comparative Example 4 using the second flocculant composition of the present invention. As a procedure, the activated carbon is removed from Example 2.

The results are shown in Table 2, FIG. 2 and FIG.
First, it was confirmed that the treated water of Example 2 could be reduced to 56 mg / l when the COD value of the raw water of non-slen dyed wastewater was 191.6 mg / l in the COD values of Table 2. Here, when the result of Example 1 is compared with the result of Example 2, the COD value is the same result, but when the absorbance is observed, an improvement effect is obtained although it is slightly. Moreover, when comparing the results of Comparative Example 2 and Comparative Example 4 which are similar treatment procedures using the second flocculant composition, Comparative Example 4 in which an acidic pH adjuster was added after the same amount of PAC was added. It was confirmed that the absorbance improved with the COD value. In other words, although depending on the type of dyeing wastewater to be treated, it is effective to adjust the pH value so that the pH value decreases after the PAC has been added, thereby further increasing the absorbance or COD value. It was confirmed that an improvement effect was obtained.

[Example 3] Experiment using selenium dye wastewater As Example 3, an experiment was performed on 500 mL of selenium dye wastewater using the first flocculant composition of the present invention. The procedure was the same as in Example 1.

[Comparative Examples 5 to 7]
In Example 3 above, the following comparative experiment was performed.
As Comparative Example 5, the same amount of alkaline pH adjusting agent as that of Example 3 was added before PAC by changing the order of adding the pH adjusting agent of the treatment pattern using the first flocculant composition of the present invention.
Comparative Example 6 is a pattern using the second flocculant composition of the present invention, and is obtained by removing activated carbon from Example 3.
In Comparative Example 7, as a comparative experiment, only activated carbon was added and the adsorption of the dye substance was observed. In Comparative Example 7, only the same amount of activated carbon as in Example 3 was added, stirred for 10 minutes, and centrifuged (3000 rpm, 5 minutes), and then CODMn and absorbance were measured.

The results are shown in Table 3, FIG. 3 and FIG.
First, looking at the COD values in Table 3, it was confirmed that the treated water of Example 3 was reduced to 70 mg / l when the COD value of the raw water of the selenium dyeing wastewater was 400 mg / l. Moreover, when FIG. 3 is seen, the chromaticity of supernatant water is also improved significantly.
In addition, by comparing the experimental result according to Example 1 using the non-slen dye waste water and the experimental result according to Example 3 using the slen dye waste water, the first of the present invention is determined depending on the type of the dye waste water. It was revealed that the aggregating effect, the decoloring effect, and the like were significantly different when each of the aggregating agent composition and the second aggregating agent composition was used.
First, as described above, the presence of activated carbon is important for non-stained dyed wastewater because Comparative Example 2 without activated carbon is the lowest COD removal rate and the supernatant water is not decolorized. It has been confirmed that. In addition, even when the alkaline pH adjuster was added prior to PAC, it was found that effective results were obtained with activated carbon.
On the contrary, Comparative Example 6 which is a coagulation treatment method using the second coagulant composition without adding activated carbon to the selenium dyeing wastewater has the highest COD removal rate after Example 3, and the supernatant water Can also be decolored. In addition, even when activated carbon was added, it was found that by introducing an alkaline pH adjuster prior to PAC, the decoloring effect could not be obtained, and the COD removal rate was low. Therefore, it became clear that the process of once decreasing the pH value by charging PAC or the like is more important than the presence of activated carbon.

  From these results, the pH adjustment step for temporarily reducing the pH value by adding PAC or the like in both the first flocculant composition and the second flocculant composition of the present invention for the selenium dye wastewater. It was confirmed that the coagulation treatment can be effectively carried out if accompanied, and that the COD value reduction and the decoloring effect can be obtained at the same time. Moreover, although it can be said that the presence of activated carbon is also effective in the selenium dye wastewater, on the other hand, since the COD value and the absorbance of Comparative Example 6 are clearly improved, pH adjustment is important in the selenium dye wastewater. FIG. 3 clearly shows that an effective decoloring effect can be obtained even when there is no activated carbon.

  In Example 4 to Example 7, in order to confirm the general effect of the first flocculant composition of the present invention on the dyeing wastewater having different properties, the processing conditions such as the amount of each component added are The experiment was carried out in a fixed manner. Actually, since the optimum treatment conditions for each dyeing wastewater are different, it is necessary to verify an appropriate input amount for each. This can further improve the COD removal rate and absorbance. In Example 8, a demonstration experiment was performed under the same processing conditions on 500 L of non-stained dyeing wastewater, and the effect on the processing in scale-up was confirmed.

[Example 4] Experiment using disperse dye wastewater The experiment was performed in the same manner as in Example 1 except that 500 ml disperse dye wastewater was used.
The results are shown in Table 4, FIG. 4 and FIG.

[Example 5] Experiment using acid dye An experiment was conducted in the same manner as in Example 1 except that 500 mL of dye waste water was used.
The results are shown in Table 4, FIG. 5 and FIG.

[Example 6] Experiment using a cationic dye An experiment was conducted in the same manner as in Example 1 except that 500 mL of dye waste water when a cationic dye was used was used.
The results are shown in Table 4, FIG. 6, and FIG.

[Example 7] Experiment using a red pigment An experiment was performed in the same manner as in Example 1 except that 500 mL of pigment waste water was used when a red pigment was used.
The results are shown in Table 4, FIG. 7 and FIG.

[Example 8] Demonstration experiment by scale-up A demonstration experiment using a batch tank was conducted in a dyeing factory for 500 L of non-slen dye wastewater. The procedure was scaled up under the same processing conditions as in Example 1.
The results are shown in Table 5, FIG. 8 and FIG.

  By integrating these experimental results, the components of the flocculant composition of the present invention, the component derived from the genus Troy's family, the flocculant component, the activated carbon, and the polymer flocculant are the active ingredients. By introducing in the above procedure, it was confirmed that the dyeing waste water can be effectively aggregated, the COD value can be reduced, and decoloring treatment, which has been difficult in the past, can be simultaneously performed. And depending on the type of coloring component such as selenium dyeing wastewater, it is confirmed that an effective decoloring action can be obtained by adjusting the pH by lowering the pH value with an aggregating agent component such as PAC even without activated carbon. did it. In addition, in the scale-up processing, it was possible to reproduce the experimental results by the beaker test and to confirm that the same aggregating effect and decoloring effect can be obtained.

  As described above, according to the aggregating agent composition and the aggregating method of the present invention, there is an effect of effectively aggregating the dye waste water, the COD value is reduced, and decoloring treatment that has been considered difficult in the past can be simultaneously performed in a short time. Was confirmed.

  The flocculant composition of the present invention and the coagulation treatment method using the same can be suitably used for dye wastewater containing dye substances and other substances generated in dyeing processes from wastewater from dye factories and the like.

  While preferred embodiments of the invention have been illustrated and described, it will be appreciated that various changes can be made without departing from the scope of the invention.

It is a photograph which shows the experimental result of "Example 1" and "Comparative Examples 1-3" which used the flocculant composition of this invention with respect to the non-slen system dye waste_water | drain. It is a photograph which shows the experimental result of "Example 2" and "Comparative example 4" which used the flocculant composition of this invention with respect to the non-slen system dyeing | draining waste_water | drain. It is a photograph which shows the experimental result of "Example 3" and "Comparative Examples 5-7" which used the flocculent composition of this invention with respect to the selenium dye waste_water | drain. It is a photograph which shows the experimental result of "Example 4" using the flocculant composition of this invention with respect to disperse dyeing | draining waste water. It is a photograph which shows the experimental result of "Example 5" using the flocculant composition of this invention with respect to the dyeing | draining waste_water | drain at the time of dyeing | staining with an acidic dye. It is a photograph which shows the experimental result of "Example 6" using the flocculant composition of this invention with respect to the dyeing | draining waste_water | drain at the time of dyeing | staining with a cationic dye. It is a photograph which shows the experimental result of "Example 7" using the flocculant composition of this invention with respect to the dyeing | draining waste_water | dye at the time of dyeing | staining with a red pigment. It is a photograph which shows the verification experiment result of "Example 8" using the flocculant composition of this invention with respect to non-slen system dyeing | draining waste water. It is a figure which shows the light absorbency in "Example 1" and "Comparative Examples 1-3" using the flocculant composition of this invention with respect to the non-slen system dye waste_water | drain. It is a figure which shows the light absorbency in "Example 2" and "Comparative example 4" which used the flocculent composition of this invention with respect to the non-slen system dyeing | draining waste_water | drain. It is a figure which shows the light absorbency in "Example 3" and "Comparative Examples 5-7" using the flocculant composition of this invention with respect to the slen dyeing | draining waste_water | drain. It is a figure which shows the light absorbency in "Example 4" using the flocculent composition of this invention with respect to disperse dyeing | draining waste_water | drain. It is a figure which shows the light absorbency in "Example 5" using the flocculant composition of this invention with respect to the dyeing | draining waste_water | drain at the time of dyeing | staining with an acidic dye. It is a figure which shows the light absorbency in "Example 6" using the flocculent composition of this invention with respect to the dyeing | draining waste_water | drain at the time of dyeing | staining with a cationic dye. It is a figure which shows the light absorbency in "Example 7" using the flocculant composition of this invention with respect to the dyeing | draining waste_water | dye at the time of dyeing | staining with a red pigment. It is a figure which shows the light absorbency in "Example 8" using the flocculant composition of this invention with respect to non-slen system dyeing | draining waste_water | drain.

Claims (29)

  A flocculant composition for purifying dyed wastewater containing a mallow family Troloae mite-derived component, a flocculant component, and a polymer flocculant.   The flocculant composition for purifying dyeing waste water according to claim 1, which is charged in the order of the component from the genus Troy's family, the flocculant component, and the polymer flocculant.   A flocculant composition for purifying dyed wastewater containing a mallow family Troloae mushroom-derived component, a flocculant component, activated carbon, and a polymer flocculant.   The flocculant composition for purifying dyeing waste water according to claim 3, wherein the components derived from the genus Troy's family, the flocculant component, the activated carbon, and the polymer flocculant are added in this order.   5. To purify dyeing wastewater according to claim 1, comprising a pH adjuster, wherein the pH adjuster is added after the flocculant component is added, and the pH is adjusted. Flocculant composition.   The dyeing waste water according to any one of claims 1 to 5, wherein a pH adjusting agent is added and the pH adjusting agent is added before the flocculant component is added, and the pH is adjusted. Flocculant composition for.   The acidic pH adjusting component is used in combination with the flocculant component to assist in adjusting the pH value of the solution charged with the flocculant component. A flocculant composition for purifying dyeing wastewater.   The flocculant composition for purifying dyed wastewater according to any one of Claims 1 to 7, wherein a component derived from the genus Troloae is used in combination with an adsorption assisting component.   The dyeing wastewater is wastewater generated by a dyeing process using any one or combination of reactive dyes, direct dyes, sulfur dyes, and naphthol dyes for dyeing cellulosic fibers. A flocculant composition for purifying the dye wastewater described in 1.   The dyeing wastewater is wastewater generated by a dyeing process using any one of acid dyes, metal complex dyes, acid mordant dyes, reactive dyes, or combinations thereof for dyeing protein fibers. A flocculant composition for purifying the dyed waste water according to item 1.   The flocculant composition for purifying dyeing wastewater according to any one of claims 1 to 8, wherein the dyeing wastewater is wastewater generated by a dyeing process using a disperse dye that dyes polyester fibers.   The flocculant composition for purifying dyeing wastewater according to any one of claims 1 to 8, wherein the dyeing wastewater is wastewater generated by a dyeing process using a cationic dye that dyes acrylic fibers.   The flocculant composition for purifying dyeing wastewater according to any one of claims 1 to 8, wherein the dyeing wastewater is wastewater generated by a dyeing process using a selenium dye that dyes cellulosic fibers.   The flocculant composition for purifying dyeing wastewater according to any one of claims 1 to 8, wherein the dyeing wastewater is wastewater generated by a dyeing process using a pigment.   15. The flocculant composition for purifying dyed wastewater according to any one of claims 1 to 14, wherein the component from the genus Troy's family is a dried and crushed okra.   15. The flocculant composition for purifying dyeing waste water according to any one of claims 1 to 14, wherein the component derived from the genus Troyae is a liquid obtained by grinding okra.   15. The flocculant composition for purifying dyed wastewater according to any one of claims 1 to 14, wherein the component derived from the genus Troy's family is a extract extracted from okra.   The dyed wastewater according to any one of claims 15 to 17, wherein a portion used as a raw material in the okra is any of fruit, seed, flower, stem, root, or a combination thereof including okra cocoons and cocoons. A flocculant composition for purification treatment.   The flocculant composition for purifying dyeing waste water according to any one of claims 1 to 18, wherein the flocculant component contains a polyvalent metal salt.   20. The flocculant composition for purifying dyeing waste water according to claim 19, wherein the flocculant component is either polyaluminum chloride or sulfuric acid band or a combination thereof.   The pH adjuster is an alkaline pH adjuster, and includes any one of sodium hydroxide, potassium hydroxide, calcium hydroxide, sodium bicarbonate, potassium bicarbonate, sodium carbonate, potassium carbonate, calcium carbonate, or a combination thereof. The flocculant composition for purifying dyeing waste water according to any one of claims 1 to 20.   22. The polymer flocculant according to any one of claims 1 to 21, wherein the polymer flocculant is a polyacrylamide organic flocculant of any one of a cationic acrylic type, an anionic acrylic type, and a nonionic acrylic type. A flocculant composition for purifying the dyed waste water described.   The flocculant composition for purifying dyeing waste water according to claim 8, wherein the adsorption auxiliary component is zeolite.   A treatment for purifying dyed wastewater containing a component from the genus Troy's family, a coagulant component, and a polymer coagulant, which is introduced in the order of the component from the genus Troy's family, the coagulant component, and the polymer coagulant Aggregation method for   25. The coagulation method for purifying dyeing waste water according to claim 24, comprising activated carbon, which is charged in the order of the component derived from the genus Troy's family, the coagulant component, the activated carbon, and the polymer coagulant.   26. The coagulation method for purifying dyed wastewater according to claim 24 or 25, comprising a pH adjuster, and adjusting the pH by adding the pH adjuster after the coagulant component is added.   27. The dyeing waste water according to any one of claims 24 to 26, comprising a pH adjusting agent, wherein the pH adjusting agent is added before the flocculant component is added, and the pH is adjusted. Aggregation method for.   The acidic pH adjusting component is used in combination with the flocculant component, and assists in adjusting the pH value of the solution charged with the flocculant component. An agglomeration method for purifying dyed wastewater.   29. The coagulation method for purifying dyed wastewater according to any one of claims 24 to 28, wherein a component derived from the genus Troloae is used in combination with an adsorption assisting component.