JPH03213194A - Treatment of dyed waste water - Google Patents
Treatment of dyed waste waterInfo
- Publication number
- JPH03213194A JPH03213194A JP522090A JP522090A JPH03213194A JP H03213194 A JPH03213194 A JP H03213194A JP 522090 A JP522090 A JP 522090A JP 522090 A JP522090 A JP 522090A JP H03213194 A JPH03213194 A JP H03213194A
- Authority
- JP
- Japan
- Prior art keywords
- treatment
- salt
- inorg
- coagulant
- amt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002351 wastewater Substances 0.000 title claims description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 10
- 230000001112 coagulating effect Effects 0.000 claims abstract description 4
- 238000004043 dyeing Methods 0.000 claims description 17
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 13
- -1 alkaline earth metal salt Chemical class 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 abstract description 9
- 239000010802 sludge Substances 0.000 abstract description 8
- 239000000701 coagulant Substances 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 229910000000 metal hydroxide Inorganic materials 0.000 abstract description 2
- 150000004692 metal hydroxides Chemical class 0.000 abstract description 2
- 150000001342 alkaline earth metals Chemical class 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005189 flocculation Methods 0.000 description 9
- 230000016615 flocculation Effects 0.000 description 9
- 239000000975 dye Substances 0.000 description 7
- 230000002378 acidificating effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 229920006318 anionic polymer Polymers 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 159000000009 barium salts Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000006103 coloring component Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000000984 vat dye Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は染色排水の処理方法に関し、より詳しくは染色
排水を無機塩凝集剤を用いて凝集処理する方法に関する
。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for treating dyeing wastewater, and more particularly to a method for coagulating dyeing wastewater using an inorganic salt flocculant.
〈従来の技術〉
一般的な染色排水の処理方法としては、アルミニウム、
鉄などの無機塩凝集剤による凝集処理方法、オゾン、過
酸化水素、塩素などの化学酸化処理方法、活性炭吸着処
理方法などが挙げられる。このうち凝集処理法は染色排
水に限らず各種の排水に対して適用されている。<Conventional technology> Common dyeing wastewater treatment methods include aluminum,
Examples include a flocculation treatment method using an inorganic salt flocculant such as iron, a chemical oxidation treatment method using ozone, hydrogen peroxide, chlorine, etc., and an activated carbon adsorption treatment method. Among these, the coagulation treatment method is applied not only to dyeing wastewater but also to various types of wastewater.
染色排水の凝集処理法は一部の染料について適用が不可
能であるが、はとんどの染料に対しては脱色効果に優れ
ている。Although the coagulation treatment method for dyeing wastewater cannot be applied to some dyes, it has an excellent decolorizing effect on most dyes.
〈発明が解決しようとする課題〉
しかしながら、この凝集処理方法の問題点は、無機塩凝
集剤やその他の薬品費がかさむことと、無機塩凝集剤の
添加量に応じた大量のスラッジが発生することである。<Problems to be Solved by the Invention> However, the problems with this flocculation treatment method are that the cost of the inorganic salt flocculant and other chemicals increases, and a large amount of sludge is generated depending on the amount of the inorganic salt flocculant added. That's true.
近年、増加するスラッジの処分は社会問題にもなってい
る。In recent years, the disposal of increasing amounts of sludge has become a social issue.
く課題を解決するための手段〉
本発明者は、無機塩凝集剤の添加量が削減でき、かつス
ラッジの発生を抑制するだめの方法について鋭意検討し
た結果、本発明に到達した。Means for Solving the Problems> The present inventor has arrived at the present invention as a result of intensive studies on a method that can reduce the amount of added inorganic salt flocculant and suppress the generation of sludge.
すなわち、本発明は、染色排水を無機塩凝集剤を用いて
凝集処理する方法において、アルカリ土類金属塩を添加
することを特徴とする染色排水の処理方法である。That is, the present invention is a method for treating dyeing wastewater characterized by adding an alkaline earth metal salt in a method of coagulating dyeing wastewater using an inorganic salt flocculant.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
染色排水を無機塩凝集剤を用いて凝集処理する方法は常
法が採用できる。Conventional methods can be used to coagulate dyeing wastewater using an inorganic salt coagulant.
本発明で使用する無機塩凝集剤としては、特に限定され
ないが、通常、硫酸アルミニウム、ポリ塩化アルミニウ
ム（以下、ＰＡＣという）、塩化第２鉄、硫酸第１鉄、
硫酸第２鉄などが使用され、排水に含有される有機物質
や着色成分が有効に除去される。処理のｐＨは通常、弱
酸性から弱アルカリ性付近に調整する。The inorganic salt flocculants used in the present invention are not particularly limited, but usually include aluminum sulfate, polyaluminum chloride (hereinafter referred to as PAC), ferric chloride, ferrous sulfate,
Ferric sulfate and the like are used to effectively remove organic substances and coloring components contained in wastewater. The pH of the treatment is usually adjusted to around weakly acidic to slightly alkaline.
本発明では、凝集処理においてアルカリ土類金属塩を添
加することが重要である。In the present invention, it is important to add an alkaline earth metal salt in the flocculation treatment.
本発明に使用されるアルカリ土類金属塩としては好まし
くはカルシウム塩、マグネシウム塩、バリウム塩などが
挙げられ、塩としては通常Ｃａ、Ｍｇ、Ｂａの塩化物、
硫化物、水酸化物が好ましく利用できる。より好ましく
は、水への溶解度が特に高い塩化物、たとえば、ＣａＣ
Ｊ！２、ＭｇＣｌ２、ＢａＣｊ！２などが挙げられる。Preferred alkaline earth metal salts used in the present invention include calcium salts, magnesium salts, barium salts, etc. Salts are usually chlorides of Ca, Mg, Ba,
Sulfides and hydroxides are preferably used. More preferably, chlorides with particularly high solubility in water, such as CaC
J! 2, MgCl2, BaCj! 2 etc.
アルカリ土類金属塩の添加時期は特に限定されないが、
通常、無機塩凝集剤とともに添加する。The timing of addition of the alkaline earth metal salt is not particularly limited, but
It is usually added together with an inorganic salt flocculant.
アルカリ土類金属塩の添加量は染色排水の組成や濃度に
よって異なるため限定できないが、通常、無機塩凝集剤
の添加量の０．１〜１００重量倍使用する。実際の添加
にあたっては、事前に凝集処理試験によって添加量を決
定するのが好ましい。Although the amount of alkaline earth metal salt added cannot be limited because it varies depending on the composition and concentration of the dyeing wastewater, it is usually used in a range of 0.1 to 100 times the amount of the inorganic salt flocculant added. In actual addition, it is preferable to determine the amount added in advance by an agglomeration treatment test.
処理水とスラッジの分離は通常、たとえば、ポリアクリ
ルアミド、ポリアクリル酸ナトリウムなどのアニオン系
高分子凝集剤を添加してフロックを粗粒化した後に、沈
降または浮上分離する。Treated water and sludge are usually separated by sedimentation or flotation after the flocs are coarsened by adding an anionic polymer flocculant such as polyacrylamide or sodium polyacrylate.
〈実施例〉 以下に、実施例によって本発明を具体的に説明する。<Example> The present invention will be specifically explained below using examples.
実施例１〜３
分散、酸性、建染染料である”Ｄｉｓｐｅｒｓｏｌ Ｎ
ｓマフ’ Ｄ３ＧＲＬｌｑ、 ’Ｐａｌａｍｉｌ Ｂｌ
ａｃｋ’ Ｔ−ｕｓ Ｌｉｑｕｉｄ。Examples 1-3 “Dispersol N” which is a dispersed, acidic, vat dye
s muff' D3GRLlq, 'Palamil Bl
ack' T-us Liquid.
’Ｋａ７ａｓｏｌ Ｂｌｘｃｋ’Ｂおよび’Ｉｎｄｘｍ
ｔｂｒｅ＋＋ Ｄａｒｋ ＢＩ＋＋ｅ’ ＲＢ Ｃｏ１
１を用いてポリエステル綿混繊物を染色した染色排水（
濃緑色）について、無機塩凝集剤として塩化第２鉄を第
１表に示す各蓋用いて、かつ第１表に示すアルカリ土類
金属塩を第１表に示す各蓋用いて凝集処理しな。'Ka7asol Blxck'B and 'Indxm
tbre++ Dark BI++e' RB Co1
Dyeing wastewater obtained by dyeing polyester cotton blended fabric using 1
For dark green), flocculation treatment was carried out using ferric chloride as an inorganic salt flocculant using each lid shown in Table 1, and alkaline earth metal salts shown in Table 1 using each lid shown in Table 1. .
凝集処理液について、生成するフロックの凝集状態を観
測した結果と、波長が５６０μ■における処理水の吸光
度を測定した結果を第１表に示しな。処理前の染色排水
は濃緑色であり、吸光度は０．４０８であった。Table 1 shows the results of observing the flocculation state of the flocs produced and the absorbance of the treated water at a wavelength of 560 μι with respect to the flocculation treatment solution. The dyed wastewater before treatment was dark green and had an absorbance of 0.408.
第 １ 表
本染色排水の凝集処理はＦｅＣＪＩ３４００■／１の添
加量で良好な処理水が得られ、それ以下の添加量ではフ
ロックの生成が不完全で不良であった。しかし、ＦｅＣ
ＪＩ ３２００ｗ／Ｊ！の添加量であっても第１表の無
機塩を添加した結果（実施例１〜３）は、良好な凝集性
が得られた。Table 1 In the flocculation treatment of main dyeing waste water, good treated water was obtained with the addition amount of FeCJI 3400/1, whereas with the addition amount less than that, floc formation was incomplete and poor. However, FeC
JI 3200w/J! As a result of adding the inorganic salts shown in Table 1 (Examples 1 to 3), good cohesiveness was obtained even with the addition amount of .
実施例４〜７
’Ｐｏ１ａｒ Ｒｅｄ’Ｒ８を主とした酸性染料’ＩＢ
ａｌａｎＹｅｌｌｏｗ ２ＯＬを主とした酸性合金染料
および’Ｄ１ａｍｉｘ Ｂｌ＋ｅ’ＢＧ−ＦＳを主とし
た分散Ｒ料に加えその他少量ずつの各染料数百種類を用
い、さらに染料以外の染色助剤を用いて、ナイロンおよ
びポリエステル糸を染色している染色工場排水（青紫色
、ｐ Ｈ１０，５、Ｃ０Ｄ２９１■／１）について、無
機凝集剤としてＦ＞ＡＣを、またアルカリ土類金属塩と
してＣａ（、Ｊ！ ２を各々第２表に示す量ずつ用いて
凝集処理した。凝集処理においてはＨＣＪによりＰＨを
６．０〜６．８に調整し、ポリアクリルアミド系のアニ
オン系高分子凝集剤を１．５ｎｇ／Ｊ！添加した。結果
を第２表に示す。Examples 4 to 7 Acidic dye 'IB' mainly based on 'Po1ar Red' R8
In addition to acid alloy dyes mainly consisting of alanYellow 2OL and dispersion R materials mainly consisting of 'D1amix Bl+e'BG-FS, small amounts of hundreds of other dyes are used, and dyeing aids other than dyes are used to dye nylon. And for dyeing factory wastewater (blue-purple, pH 10,5, C0D291/1) dyeing polyester yarn, F>AC was used as an inorganic flocculant, and Ca (J!2) was used as an alkaline earth metal salt. A flocculation treatment was carried out using each in the amounts shown in Table 2. In the flocculation treatment, the pH was adjusted to 6.0 to 6.8 by HCJ, and 1.5 ng/J! of a polyacrylamide-based anionic polymer flocculant was used! The results are shown in Table 2.
本排水をＰＡＣ単独で凝集するには１．００ｍ１／１が
必要であるが、ＰＡＣとＣａＣｊ！ ２を併用して凝集
させれば、ＰＡＣがそれよりも少ない添加量でよい、こ
の結果、スラッジの発生量が大幅に減少できる。To coagulate this wastewater with PAC alone, 1.00 m1/1 is required, but PAC and CaCj! If 2 is used in combination for aggregation, a smaller amount of PAC is required, and as a result, the amount of sludge generated can be significantly reduced.
〈発明の効果〉
本発明によれば、無機塩凝集剤の添加量が減少し、処理
水水質の向上が可能となるとともに、金属水酸化物で構
成されるスラッジ量の削減と、薬品費の低減が可能とな
る。<Effects of the Invention> According to the present invention, the amount of inorganic salt flocculant added is reduced, making it possible to improve the quality of treated water, reducing the amount of sludge composed of metal hydroxides, and reducing chemical costs. reduction is possible.
Claims (1)
いて、アルカリ土類金属塩を添加することを特徴とする
染色排水の処理方法。1. A method for treating dyeing wastewater, which comprises adding an alkaline earth metal salt to the method of coagulating dyeing wastewater using an inorganic salt flocculant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP522090A JPH03213194A (en) | 1990-01-12 | 1990-01-12 | Treatment of dyed waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP522090A JPH03213194A (en) | 1990-01-12 | 1990-01-12 | Treatment of dyed waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03213194A true JPH03213194A (en) | 1991-09-18 |
Family
ID=11605115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP522090A Pending JPH03213194A (en) | 1990-01-12 | 1990-01-12 | Treatment of dyed waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03213194A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012035183A (en) * | 2010-08-05 | 2012-02-23 | Ishii Shoji Kk | Method for decoloring and purifying water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4833181A (en) * | 1971-08-26 | 1973-05-08 | ||
| JPS4927374A (en) * | 1972-07-10 | 1974-03-11 | ||
| JPS5243025A (en) * | 1975-10-03 | 1977-04-04 | Toyota Motor Corp | Exhaust recircling system |
| JPS5335253A (en) * | 1976-09-14 | 1978-04-01 | Buakutaa Kk | Dyed waste water treating method |
| JPS586209A (en) * | 1981-07-01 | 1983-01-13 | Pentel Kk | Clarifying device for colored water |
-
1990
- 1990-01-12 JP JP522090A patent/JPH03213194A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4833181A (en) * | 1971-08-26 | 1973-05-08 | ||
| JPS4927374A (en) * | 1972-07-10 | 1974-03-11 | ||
| JPS5243025A (en) * | 1975-10-03 | 1977-04-04 | Toyota Motor Corp | Exhaust recircling system |
| JPS5335253A (en) * | 1976-09-14 | 1978-04-01 | Buakutaa Kk | Dyed waste water treating method |
| JPS586209A (en) * | 1981-07-01 | 1983-01-13 | Pentel Kk | Clarifying device for colored water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012035183A (en) * | 2010-08-05 | 2012-02-23 | Ishii Shoji Kk | Method for decoloring and purifying water |
| TWI494279B (en) * | 2010-08-05 | 2015-08-01 | Ishii Corp | Decolorization and water purification method |
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