JP4791936B2 - Dyeing wastewater treatment method - Google Patents
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本発明は、還元能と錯体置換能を有する天然有機酸(R−COOH)、凝集作用・共沈作用に寄与するミョウバン、中和剤、及びアクリル系高分子物質からなる凝集剤を用いて、含水汚泥を含む汚濁排水中の浮遊懸濁物質(SS:Suspended Solid )や汚泥を凝集分離する汚濁排水処理方法に係り、詳しくは、含水染色汚泥を含む染色排水に対して前記凝集剤を用い、染色汚泥を凝集沈殿物として分離回収するようにした染色排水処理方法に関する。 The present invention uses a natural organic acid (R-COOH) having a reducing ability and a complex substitution ability, an alum that contributes to an aggregating action and a coprecipitation action, a neutralizing agent, and an aggregating agent composed of an acrylic polymer substance. Suspended solids (SS: Suspended Solid) in sewage wastewater containing water-containing sludge and a sewage wastewater treatment method that coagulates and separates sludge. The present invention relates to a dyeing wastewater treatment method in which dyed sludge is separated and recovered as an aggregated precipitate.
なお、本発明で用いる凝集剤は、含水汚泥を含む汚濁排水(ただし、含水染色汚泥を含む染色排水を除く。)に対する凝集剤「ミラグレース」(登録商標)として公知のものである。 The flocculant used in the present invention is known as a flocculant “Miraglace” (registered trademark) for polluted wastewater containing hydrous sludge (excluding dyeing wastewater containing hydrous dyed sludge).
従来より、還元能と錯体置換能を有する天然有機酸(R−COOH)、凝集作用・共沈作用を行う硫酸アルミニウム〔Al2(SO4)3 〕、及び硫酸カリウムアルミニウム〔AlK(SO4)3 〕、中和するための炭難ナトリウム(Na2CO3)、フロック粗大作用と脱水向上作用を行うポリアクリルアミド、アクリル酸ナトリウム、ポリアクリル酸エステルから選択される1種以上の高分子物質とからなる凝集剤が知られている(例えば、特許文献1を参照)。
この公知の凝集剤〔ミラグレース(登録商標)に同じ。〕は、各種排水中の微粒子、改定、湖、沼、河川等の底泥のような泥状物質を凝集分離し、湖沼・海域と赤潮等の有機性懸濁物質を効率的に固液分離処理するためのものであるとの記載がある。具体的には、鍍金廃水、各種工場廃水、建設汚泥、浚渫汚泥水等に含まれる浮遊懸濁物質(SS:Suspended Solid )を凝集・分離するとともに、重金属類や溶存汚濁物質を吸着・固定し分離するために用いられものと推認される。 This known flocculant [same as Miraglace®. ] Coagulates and separates fine particles in various wastewaters, amendments, sludge such as bottom mud from lakes, swamps, rivers, etc., and efficiently separates solid suspensions from lakes / seas and organic suspended solids such as red tides. There is a description that it is for processing. Specifically, suspended suspended solids (SS) contained in metal wastewater, various factory wastewater, construction sludge, and sludge water are agglomerated and separated, and heavy metals and dissolved pollutants are adsorbed and fixed. Inferred to be used for separation.
ところで、染色加工の工程で排出される染色排水(染色汚泥を含む)の処理に関し、環境的な配慮が必要であることが指摘されてきた。 By the way, it has been pointed out that environmental considerations are necessary for the treatment of dye wastewater (including dye sludge) discharged in the dyeing process.
染色は一般に水媒体で行われ、多量の薬剤(染料)とエネルギを使用し、その排水量は多大であり、排水処理における環境汚染の問題は今日的にも重要な技術解決課題として認識されている。 Dyeing is generally carried out in an aqueous medium, uses a large amount of chemicals (dye) and energy, and the amount of wastewater is large. The problem of environmental pollution in wastewater treatment is still recognized as an important technical solution issue today. .
こうしたなかで、本発明者らは、上記公知の凝集剤の正当な利用者として用途毎の性能評価を追試するなかで、あらたな利用先として染色排水への適用性を見出し、有効な処理方法の開発にとりくんできた。 Under these circumstances, the present inventors have found out the applicability to dyeing wastewater as a new usage destination in the pursuit of performance evaluation for each application as a legitimate user of the known flocculant, and an effective treatment method Has been working on the development of.
なお、上記文献公知発明の特許出願人(株式会社ワイエスデー)にあっては、特許出願に係る凝集剤の利用先として染色排水への適用は考慮又は想定しておらず、その処理効果についても認識又は予測していないということであり、当該発明の事実認定について当事者確認済である。 In addition, in the patent applicant (Wyeth Day Co., Ltd.) of the above-mentioned document known invention, application to dyeing wastewater is not considered or assumed as a usage destination of the flocculant according to the patent application, and the processing effect is also considered. It means that it has not been recognized or predicted, and the factual recognition of the invention has been confirmed by the parties.
解決しようとする課題は、上記公知の凝集剤の未知の用途に関し、染色排水処理への適用とその処理技術を確立する点にある。 The problem to be solved is to establish application to dyeing wastewater treatment and its treatment technology regarding the unknown use of the known flocculant.
本発明は、このような事情に鑑みなされたものであって、含水染色汚泥を含む染色排水を被処理原水として、上記公知の凝集剤を用い、染色汚泥を凝集沈殿物として分離回収するようにした染色排水処理方法を提供するものである。 The present invention has been made in view of such circumstances, and uses dyed wastewater containing hydrous dyed sludge as raw water to be treated, and uses the above-mentioned known flocculant to separate and recover the dyed sludge as a coagulated sediment. The dyeing waste water treatment method is provided.
課題を解決するために本発明は、還元能と錯体置換能を有する天然有機酸(R−COOH)、凝集作用・共沈作用に寄与するミョウバン、中和剤、及びアクリル系高分子物質からなる凝集剤を用いて、含水汚泥を含む汚濁排水中の浮遊懸濁物質(SS:Suspended Solid )や汚泥を凝集分離する汚濁排水処理方法において、
含水染色汚泥を含む染色排水(以下、被処理原水。)に対して前記凝集剤を用い、染色汚泥を凝集沈殿物として分離回収するようにした染色排水処理方法であって、
被処理原水に粉末活性炭を投入し撹拌した後、前記凝集剤を投入して撹拌し、さらに塩化鉄水溶液を投入し撹拌した後静置して染色汚泥を凝集沈殿させることを特徴とするものである。
In order to solve the problems, the present invention comprises a natural organic acid (R-COOH) having reducing ability and complex substitution ability, alum contributing to coagulation and coprecipitation, a neutralizing agent, and an acrylic polymer substance. In the sewage wastewater treatment method of coagulating and separating suspended suspended solids (SS: Suspended Solid) and sludge in sewage wastewater containing hydrous sludge using a flocculant,
A dyeing wastewater treatment method in which the flocculant is used for dyeing wastewater containing water-containing dyeing sludge (hereinafter, raw water to be treated), and the dyeing sludge is separated and recovered as an aggregated precipitate,
Powdered activated carbon is added to the raw water to be treated and stirred, then the flocculant is added and stirred, and further, an aqueous iron chloride solution is added and stirred, and then allowed to stand to coagulate and precipitate the dyed sludge. is there.
本発明によれば、公知の凝集剤について未知の用途、すなわち含水染色汚泥を含む染色排水を被処理原水とする新たな用途を開拓するとともに、染色排水処理に関する効率的でエコフレンドリーな処理技術を確立し、提供することができる。 According to the present invention, an unknown application of a known flocculant, that is, a new application using dyed wastewater containing hydrous dyed sludge as raw water to be treated, and an efficient and eco-friendly treatment technology for dyeing wastewater treatment are developed. Can be established and provided.
本発明の実施の最良形態は、上記構成の染色排水処理方法において、以下(1)〜(4)の処理手順を包含することを特徴としている。 The best mode for carrying out the present invention is characterized by including the following processing procedures (1) to (4) in the dyeing wastewater treatment method having the above-described configuration.
(1)被処理原水に粉末活性炭を投入し撹拌することにより、染色汚泥粒子を活性炭粒子に吸着し集塊化するフロック化処理手順。 (1) A flocking treatment procedure in which powdered activated carbon is introduced into raw water to be treated and stirred to adsorb the dyed sludge particles to the activated carbon particles and agglomerate them.
(2)前記フロック化処理後の被処理原水に前記凝集剤を投入し撹拌することにより、フロック成長を進行させる凝集化処理手順。 (2) A coagulation treatment procedure in which floc growth is advanced by adding the aggregating agent to the raw water to be treated after the flocking treatment and stirring.
(3)前記凝集化処理後の被処理原水に 2.5%塩化鉄水溶液を投入し撹拌した後、所定時間静置することにより、フロック同士の包接化を進行させ、かつ、凝集沈殿させる不溶化処理手順。 (3) An insolubilization treatment in which a 2.5% iron chloride aqueous solution is added to the raw water to be treated after the agglomeration treatment and stirred, and then allowed to stand for a predetermined time to promote inclusion of flocs and agglomerate and precipitate. procedure.
(4)前記不溶化処理後、被処理原水を濾過して凝集沈殿物を分離回収する濾過分離処理手順。 (4) A filtration / separation processing procedure for filtering the raw water to be treated and separating and collecting the aggregated precipitate after the insolubilization treatment.
また、濾過分離処理後の凝集沈殿物を廃棄物として最終処理する場合が考慮される。すなわち、上記処理手順の後流処理として、当該凝集沈殿物を乾燥を含む生物学的分解処理環境に導入して減容化する生分解処理手順を包含する場合がある。 In addition, a case where the aggregated precipitate after the filtration separation treatment is finally treated as waste is considered. That is, the downstream treatment of the above-described treatment procedure may include a biodegradation treatment procedure in which the aggregated precipitate is introduced into a biological decomposition treatment environment including drying to reduce the volume.
本発明の一実施例である染色排水処理方法(以下、実施例処理方法。)について添付図面を参照して以下説明する。 A dyeing wastewater treatment method (hereinafter referred to as an example treatment method) which is an embodiment of the present invention will be described below with reference to the accompanying drawings.
図1は実施例処理方法の処理手順(処理操作)を示す説明図である。 FIG. 1 is an explanatory diagram showing a processing procedure (processing operation) of the embodiment processing method.
図2は実施例処理方法の処理手順(処理操作)を示すフロー図である。ここでは、後述の生分解処理手順を含む処理フローを表示した。 FIG. 2 is a flowchart showing a processing procedure (processing operation) of the embodiment processing method. Here, a processing flow including a biodegradation processing procedure described later is displayed.
図示するように、実施例処理方法は、被処理原水に粉末活性炭を投入し撹拌した後、凝集剤を投入して撹拌し、さらに 2.5%塩化鉄水溶液を投入し撹拌した後静置して染色汚泥を凝集沈殿させ、濾過分離するようにしている。ここで、好適な塩化鉄水溶液は、塩化第二鉄(FeCl3)を 2.5%に希釈した水溶液〔以下、 2.5%塩化鉄(III) 水溶液〕である。 As shown in the figure, in the treatment method of the embodiment, powdered activated carbon is added to the raw water to be treated and stirred, and then the flocculant is added and stirred. Sludge is agglomerated and separated by filtration. Here, a preferable aqueous solution of iron chloride is an aqueous solution obtained by diluting ferric chloride (FeCl 3 ) to 2.5% (hereinafter referred to as a 2.5% aqueous solution of iron (III) chloride).
そのプロセス(又は処理操作)は、フロック化処理手順(1)と、凝集化処理手順(2)と、不溶化処理手順(3;3イ,3ロ)と、濾過分離処理手順(4)からなる。 The process (or processing operation) includes a flocking treatment procedure (1), an agglomeration treatment procedure (2), an insolubilization treatment procedure (3; 3i, 3b), and a filtration separation treatment procedure (4). .
フロック化処理手順(1)は、被処理原水に粉末活性炭を投入し撹拌することにより、染色汚泥粒子を活性炭粒子に吸着し集塊化する処理操作である。 The flocking treatment procedure (1) is a treatment operation for adsorbing the dyed sludge particles to the activated carbon particles and agglomerating them by adding powdered activated carbon to the raw water to be treated and stirring.
凝集化処理手順(2)は、フロック化処理後の被処理原水に前記凝集剤を投入し撹拌することにより、フロック成長を進行させる処理操である。 The agglomeration treatment procedure (2) is a treatment operation in which floc growth is advanced by adding the aggregating agent to the raw water to be treated after the flocking treatment and stirring.
不溶化処理手順(3)は、凝集化処理後の被処理原水に 2.5%塩化鉄(III) 水溶液を投入し撹拌した後(3イ)、所定時間静置することにより(3ロ)、フロック同士の包接化を進行させ、かつ、凝集沈殿させる処理操作である。 The insolubilization procedure (3) consists of adding 2.5% iron (III) chloride aqueous solution to the raw water to be treated after agglomeration and stirring (3a), and then allowing to stand for a predetermined time (3b). This is a processing operation for proceeding to include and coagulate.
濾過分離処理手順(4)は、不溶化処理後、被処理原水を濾過して凝集沈殿物を分離回収する処理操作である。 The filtration separation processing procedure (4) is a processing operation for filtering the raw water to be treated and separating and collecting the aggregated precipitate after the insolubilization treatment.
実験的事実に基づく処理操作について以下説明しておく。なお、規模の拡縮が本発明の要旨に影響することはない。 Processing operations based on experimental facts will be described below. It should be noted that the scale expansion does not affect the gist of the present invention.
予め2Lの染色汚泥に水1Lと工業用活性炭50gを加え、混合した溶液を5Lのガラス製三口フラスコに投入し、5分間定速撹拌(480rpm) を行った。ついで、この混合溶液に凝集剤〔株式会社ワイエスデー製「ミラグレース」(登録商標)〕45gを投入し、5分間定速撹拌した。その後、市販の37%塩化鉄(III) 水溶液を希釈調製(1/14.8)した 2.5%塩化鉄(III) 水溶液60gを加え、さらに5分間撹拌した。撹拌終了後、10分程度静置し、混合溶液を濾過し、水溶液と凝集沈殿物を分離した。なお、水溶液は無色無臭であり、pHは8.0 であった。 In advance, 1 L of water and 50 g of industrial activated carbon were added to 2 L of dyed sludge, and the mixed solution was put into a 5 L glass three-necked flask and stirred at a constant speed (480 rpm) for 5 minutes. Subsequently, 45 g of a flocculant [“Miraglace” (registered trademark) manufactured by Wyeth Day Co., Ltd.] was added to the mixed solution, and the mixture was stirred at a constant speed for 5 minutes. Thereafter, 60 g of a 2.5% aqueous solution of iron (III) chloride prepared by diluting (1 / 14.8) a 37% aqueous solution of iron (III) chloride was added, and the mixture was further stirred for 5 minutes. After the stirring, the mixture was allowed to stand for about 10 minutes, the mixed solution was filtered, and the aqueous solution and the aggregated precipitate were separated. The aqueous solution was colorless and odorless, and the pH was 8.0.
また、濾過分離処理後の凝集沈殿物を廃棄物として最終処理する場合、後流処理を包含する処理方法(又は処理系)が考慮される。すなわち、当該凝集沈殿物を乾燥を含む生物学的分解処理環境に導入して減容化する生分解処理手順(5)を構成要件として包含することが考慮される。ここで、生物学的分解処理環境は、例えば微生物を利用した生ゴミ処理装置又は発酵処理装置である〔図示省略〕。 In addition, when the aggregated precipitate after the filtration and separation treatment is finally treated as waste, a treatment method (or treatment system) including a wake treatment is considered. That is, it is considered that the biodegradation treatment procedure (5) for introducing the aggregated precipitate into a biological decomposition treatment environment including drying and reducing the volume is included as a constituent element. Here, the biological decomposition processing environment is, for example, a garbage processing device or a fermentation processing device using microorganisms (not shown).
本発明は、公知の凝集剤をこれまで未知であった染色排水処理へ適用可能に用途拡大した点、しかも染色排水に対する効率的でエコフレンドリーな処理技術を確立した点において、斯界への貢献は大であり、産業上の利用価値が高いものである。 The present invention has contributed to this field in that it has expanded its application so that known flocculants can be applied to dyeing wastewater treatment that has been unknown so far, and has established an efficient and eco-friendly treatment technology for dyeing wastewater. It is large and has high industrial utility value.
1 フロック化処理手順
2 凝集化処理手順
3 不溶化処理手順
3イ 塩化鉄(III) 投入撹拌処理
3ロ 静置処理
4 濾過分離処理手順
5 生分解処理手順
1
Claims (3)
含水染色汚泥を含む染色排水(以下、被処理原水。)に対して前記凝集剤を用い、染色汚泥を凝集沈殿物として分離回収するようにした染色排水処理方法であって、
被処理原水に粉末活性炭を投入し撹拌した後、前記凝集剤を投入して撹拌し、さらに塩化鉄水溶液を投入し撹拌した後静置して染色汚泥を凝集沈殿させることを特徴とする染色排水処理方法。 Contains natural organic acid (R-COOH) with reducing ability and complex substitution ability, alum that contributes to coagulation and coprecipitation, neutralizing agent, and coagulant composed of acrylic polymer material, including hydrous sludge In the polluted wastewater treatment method that aggregates and separates suspended suspended solids (SS) and sludge in polluted wastewater,
A dyeing wastewater treatment method in which the flocculant is used for dyeing wastewater containing water-containing dyeing sludge (hereinafter, raw water to be treated), and the dyeing sludge is separated and recovered as an aggregated precipitate,
Dyeing wastewater characterized by adding powdered activated carbon to raw water to be treated and stirring, then adding and aggregating the flocculant, further adding iron chloride aqueous solution and stirring, and allowing the dyed sludge to coagulate and settle. Processing method.
含水染色汚泥を含む染色排水(以下、被処理原水。)に対して前記凝集剤を用い、染色汚泥を凝集沈殿物として分離回収するようにした染色排水処理方法であって、以下の処理手順を包含することを特徴とする染色排水処理方法。
(1)被処理原水に粉末活性炭を投入し撹拌することにより、染色汚泥粒子を活性炭粒子に吸着し集塊化するフロック化処理手順。
(2)前記フロック化処理後の被処理原水に前記凝集剤を投入し撹拌することにより、フロック成長を進行させる凝集化処理手順。
(3)前記凝集化処理後の被処理原水に塩化鉄水溶液を投入し撹拌した後、所定時間静置することにより、フロック同士の包接化を進行させ、かつ、凝集沈殿させる不溶化処理手順。
(4)前記不溶化処理後、被処理原水を濾過して凝集沈殿物を分離回収する濾過分離処理手順。 Contains natural organic acid (R-COOH) with reducing ability and complex substitution ability, alum that contributes to coagulation and coprecipitation, neutralizing agent, and coagulant composed of acrylic polymer material, including hydrous sludge In the polluted wastewater treatment method that aggregates and separates suspended suspended solids (SS) and sludge in polluted wastewater,
A dyeing wastewater treatment method for separating and recovering dyed sludge as agglomerated sediment by using the flocculant with respect to dyeing wastewater containing water-containing dyed sludge (hereinafter, raw water to be treated). A dyeing waste water treatment method characterized by including.
(1) A flocking treatment procedure in which powdered activated carbon is introduced into raw water to be treated and stirred to adsorb the dyed sludge particles to the activated carbon particles and agglomerate them.
(2) A coagulation treatment procedure in which floc growth is advanced by adding the aggregating agent to the raw water to be treated after the flocking treatment and stirring.
(3) An insolubilization treatment procedure in which an aqueous solution of iron chloride is added to the raw water to be treated after the agglomeration treatment and stirred, and then allowed to stand for a predetermined time to advance inclusion of flocs and agglomerate and precipitate.
(4) A filtration / separation processing procedure for filtering the raw water to be treated and separating and collecting the aggregated precipitate after the insolubilization treatment.
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CN104370426A (en) * | 2014-12-08 | 2015-02-25 | 福建省首融环境科技有限公司 | Method and device for treatment of high-temperature printing and dyeing wastewater |
CN105060559A (en) * | 2015-08-05 | 2015-11-18 | 山东益源环保科技有限公司 | Coking wastewater depth treatment process |
CN105692963A (en) * | 2016-03-16 | 2016-06-22 | 苏州迪恩斯纺织服饰有限公司 | Dye effluent purifying method and purifying equipment matched with method |
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