JP2000237760A - Organic waste water treatment - Google Patents
Organic waste water treatmentInfo
- Publication number
- JP2000237760A JP2000237760A JP4561499A JP4561499A JP2000237760A JP 2000237760 A JP2000237760 A JP 2000237760A JP 4561499 A JP4561499 A JP 4561499A JP 4561499 A JP4561499 A JP 4561499A JP 2000237760 A JP2000237760 A JP 2000237760A
- Authority
- JP
- Japan
- Prior art keywords
- added
- organic wastewater
- biological treatment
- treated water
- treated
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は有機性廃水の生物学
的処理方法に関し、詳しくは陰イオン界面活性剤を含有
する有機性廃水の生物学的処理方法に関する。The present invention relates to a biological treatment method for organic wastewater, and more particularly to a biological treatment method for organic wastewater containing an anionic surfactant.
【０００２】[0002]
【従来の技術】従来、有機性廃水は、活性汚泥法や浸漬
濾床法などの生物学的方法により廃水処理を行ってい
る。半導体デバイス（ＬＳＩ、ＶＳＬＩ等）やＬＣＤの
製造工程などにはフォトリソグラフィー工程が含まれ、
この工程では、ウェハやガラス基板等の基板上にフォト
レジストの皮膜を形成し、その所定部分に光等を照射
し、現像液で現像することによって微細なパターンを形
成するが、この現像の際にＴＭＡＨ（テトラメチルアン
モニウムハイドロオキサイド）等のＴＡＡＨ（テトラア
ルキルアンモニウムハイドロオキサイド）の水溶液が現
像液として使用され、高濃度の有機性廃水が排出され
る。この有機性廃水の処理には、好気性生物処理が行わ
れてきた。最近、陰イオン界面活性剤が０．１〜１．０
重量％程度含まれるＴＭＡＨ等のＴＡＡＨの水溶液も現
像液として使用されるようになり、ＴＡＡＨの他に陰イ
オン界面活性剤を含む有機性廃水も排出されるようにな
ってきた。陰イオン界面活性剤は細菌に殺菌作用を及ぼ
すことが知られており、従って、これが含まれている有
機性廃水は生物処理ができない。このような有機性廃水
を他の排水や清水で希釈すれば、陰イオン界面活性剤の
殺菌効果が薄れ、生物処理が可能となるが、他の排水が
ない場合には、他の排水での希釈は不可能であり、ま
た、清水での希釈はランニングコストが掛かり、また、
排水量が増える。フェントン酸化などで陰イオン界面活
性剤成分を或る程度酸化した後に生物処理を行うことも
可能であるが、酸化剤や触媒の添加、発生した汚泥の処
理などのためにランニングコストが高くなる。ＰＡＣ
（ポリ塩化アルミニウム）等の無機凝集剤で凝集沈澱し
た後に上澄水を生物処理することも可能であるが、陰イ
オン界面活性剤は廃水中に溶解しているのでこれを除去
するためには多量の無機凝集剤の添加が必要であり、そ
のためランニングコストが高くなる。2. Description of the Related Art Conventionally, organic wastewater is treated by a biological method such as an activated sludge method or a immersion filter bed method. The manufacturing process of semiconductor devices (LSI, VSLI, etc.) and LCD includes a photolithography process,
In this step, a photoresist film is formed on a substrate such as a wafer or a glass substrate, and a predetermined portion thereof is irradiated with light or the like and developed with a developer to form a fine pattern. An aqueous solution of TAAH (tetraalkylammonium hydroxide) such as TMAH (tetramethylammonium hydroxide) is used as a developer, and high-concentration organic wastewater is discharged. Aerobic biological treatment has been used to treat this organic wastewater. Recently, an anionic surfactant has been used in an amount of 0.1 to 1.0.
Aqueous solutions of TAAH such as TMAH, which are contained in an amount of about% by weight, have also been used as developers, and organic wastewater containing an anionic surfactant in addition to TAAH has also been discharged. Anionic surfactants are known to have a bactericidal action on bacteria, so that organic wastewater containing them cannot be biologically treated. If such organic wastewater is diluted with other wastewater or fresh water, the sterilizing effect of the anionic surfactant is diminished, and biological treatment can be performed. Dilution is not possible, and dilution with fresh water requires running costs,
The amount of drainage increases. Biological treatment can be performed after the anionic surfactant component is oxidized to some extent by Fenton oxidation or the like, but the running cost increases due to the addition of an oxidizing agent and a catalyst and the treatment of generated sludge. PAC
It is possible to biologically treat the supernatant water after coagulation and precipitation with an inorganic coagulant such as (polyaluminum chloride). However, since the anionic surfactant is dissolved in the waste water, a large amount of Need to be added, which increases the running cost.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、陰イ
オン界面活性剤が含まれる有機性廃水を経済的に処理す
る方法を提供することにある。It is an object of the present invention to provide a method for economically treating organic wastewater containing anionic surfactants.
【０００４】[0004]
【課題を解決するための手段】本発明は、陰イオン界面
活性剤が含まれる有機性廃水の処理において、陽イオン
性高分子凝集剤を添加した後、更に無機凝集剤を添加し
て得た処理水を生物処理することを特徴とする有機性廃
水処理方法を提供するものである。無機凝集剤を添加し
た処理水はそのまま生物処理することも可能であるが、
無機凝集剤の添加により凝集物（微細フロック）が生じ
るので、これを分離した後の処理水を生物処理するの
が、生物処理の効率の点では好ましい。また、無機凝集
剤を添加した後に更に陰イオン性高分子凝集剤を添加す
ると、大きなフロックが得られ、固液分離が容易とな
り、この様にしてフロックを除去した処理水を生物処理
するのが更に好ましい。According to the present invention, in the treatment of organic wastewater containing an anionic surfactant, a cationic polymer flocculant is added, and then an inorganic flocculant is further added. It is an object of the present invention to provide an organic wastewater treatment method characterized by biologically treating treated water. The treated water to which the inorganic coagulant has been added can be subjected to biological treatment as it is,
Aggregates (fine flocs) are generated by the addition of the inorganic coagulant, and it is preferable to subject the treated water to biological treatment after separating the aggregates from the viewpoint of biological treatment efficiency. In addition, if an anionic polymer flocculant is further added after the inorganic flocculant is added, a large floc is obtained, and solid-liquid separation is facilitated. More preferred.
【０００５】本発明の処理対象である有機性廃水は、陰
イオン界面活性剤を含む限りにおいて、特に限定されな
い。有機性廃水中の陰イオン界面活性剤は、例えば、全
有機物量の０．１〜１０重量％の割合で含まれる。前述
のフォトリソグラフィー工程で用いられる陰イオン界面
活性剤含有現像液のアルカリ成分のＴＡＡＨとしては、
ＴＭＡＨの他に、例えば、水酸化テトラエチルアンモニ
ウム、水酸化テトラプロピルアンモニウム、水酸化テト
ラブチルアンモニウム、水酸化メチルトリエチルアンモ
ニウム、水酸化トリメチルエチルアンモニウム、水酸化
ジメチルジエチルアンモニウム、水酸化トリメチル（２
−ヒドロキシエチル）アンモニウム（即ち、コリン）、
水酸化トリエチル（２−ヒドロキシエチル）アンモニウ
ム、水酸化ジメチルジ（２−ヒドロキシエチル）アンモ
ニウム、水酸化ジエチルジ（２−ヒドロキシエチル）ア
ンモニウム、水酸化メチルトリ（２−ヒドロキシエチ
ル）アンモニウム、水酸化エチルトリ（２−ヒドロキシ
エチル）アンモニウム、水酸化テトラ（２−ヒドロキシ
エチル）アンモニウム等を挙げることができる。従っ
て、この現像の際に排出される有機性廃水の本発明の方
法による処理においては、このようなＴＡＡＨを生物分
解する。The organic wastewater to be treated according to the present invention is not particularly limited as long as it contains an anionic surfactant. The anionic surfactant in the organic wastewater is contained, for example, in a ratio of 0.1 to 10% by weight of the total organic matter. As the TAAH of the alkali component of the anionic surfactant-containing developer used in the above-described photolithography step,
In addition to TMAH, for example, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, methyltriethylammonium hydroxide, trimethylethylammonium hydroxide, dimethyldiethylammonium hydroxide, trimethylammonium hydroxide (2
-Hydroxyethyl) ammonium (ie choline),
Triethyl (2-hydroxyethyl) ammonium hydroxide, dimethyldi (2-hydroxyethyl) ammonium hydroxide, diethyldi (2-hydroxyethyl) ammonium hydroxide, methyltri (2-hydroxyethyl) ammonium hydroxide, ethyltri (2-hydroxyethyl) ammonium hydroxide (Hydroxyethyl) ammonium, tetra (2-hydroxyethyl) ammonium hydroxide and the like. Therefore, in the treatment of the organic wastewater discharged during the development according to the method of the present invention, such TAAH is biodegraded.
【０００６】陽イオン性高分子凝集剤は、例えば、ポリ
ジメチルジアリルアンモニウムクロライド、ポリエチレ
ンイミン，ジアルキルアミンとエピクロルヒドリンの縮
合物、アルキレンジクロライドとポリアルキレンアミン
との縮合物、ジシアンジアミドとホルムアルデヒドとの
縮合物などが挙げられるが、特にこれらに限定されるも
のではない。陽イオン性高分子凝集剤の分子量は特に限
定されるものではないが、約１０００〜１００万の範囲
であるのが陰イオン界面活性剤との反応性が良好なこと
から好ましい。陽イオン性高分子凝集剤の添加量は、特
に限定されないが、効果と経済性との観点から、重量基
準で、有機性廃水中の陰イオン界面活性剤濃度の１００
分の１から１０倍の濃度になる様な範囲の量が好まし
い。Examples of the cationic polymer flocculant include polydimethyldiallylammonium chloride, polyethyleneimine, a condensate of dialkylamine and epichlorohydrin, a condensate of alkylene dichloride and polyalkyleneamine, and a condensate of dicyandiamide and formaldehyde. But are not particularly limited to these. Although the molecular weight of the cationic polymer flocculant is not particularly limited, it is preferably in the range of about 1,000 to 1,000,000 because of good reactivity with the anionic surfactant. The amount of the cationic polymer flocculant to be added is not particularly limited, but from the viewpoint of effect and economy, the concentration of the anionic surfactant in the organic wastewater is 100% by weight on the basis of weight.
An amount in a range such that the concentration is reduced by a factor of 1 to 10 is preferable.
【０００７】無機凝集剤は、例えば、ＰＡＣ（ポリ塩化
アルミニウム）や硫酸アルミニウム、ポリ硫酸第二鉄、
塩化第二鉄などが挙げられるが、特にこれらに限定され
るものではない。無機凝集剤の添加量は、特に限定され
ないが、効果と経済性との観点から、重量基準で、有機
性廃水中の陰イオン界面活性剤濃度の１００分の１から
１０倍の濃度になる様な範囲の量が好ましい。The inorganic flocculants include, for example, PAC (polyaluminum chloride), aluminum sulfate, ferric polysulfate,
Examples thereof include ferric chloride, but are not particularly limited thereto. The amount of the inorganic coagulant to be added is not particularly limited. However, from the viewpoints of effect and economy, the concentration is preferably 1/100 to 10 times the concentration of the anionic surfactant in the organic wastewater on a weight basis. A range of amounts is preferred.
【０００８】なお、陽イオン性高分子凝集剤と無機凝集
剤との添加は、前者を添加して良く被処理水（有機性廃
水）と混合した後に後者を添加する。凝集時ｐＨは特に
限定されないが、４〜９の範囲が好ましい。The addition of the cationic polymer coagulant and the inorganic coagulant may be carried out by adding the former well and then adding the latter after mixing with the water to be treated (organic wastewater). The pH at the time of aggregation is not particularly limited, but is preferably in the range of 4 to 9.
【０００９】陰イオン性高分子凝集剤は、例えば、ポリ
アクリル酸塩（ＮａやＫ等の塩）、アクリルアミドとア
クリル酸塩（ＮａやＫ等の塩）の共重合物等が挙げられ
るが、特にこれらに限定されるものではない。陰イオン
性高分子凝集剤の分子量は、特に限定されるものではな
いが、大きなフロックの生成の容易性の観点から１００
万以上であるのが好ましい。陰イオン性高分子凝集剤の
添加量は、特に限定されないが、効果と経済性との観点
から、有機性廃水に対して０．１〜１００ｍｇ／Ｌ
（「リットル」、以下同様）の範囲が好ましい。Examples of the anionic polymer flocculant include polyacrylates (salts such as Na and K) and copolymers of acrylamide and acrylates (salts such as Na and K). It is not particularly limited to these. The molecular weight of the anionic polymer flocculant is not particularly limited, but may be 100 from the viewpoint of easy generation of large flocs.
Preferably, it is at least 10,000. Although the addition amount of the anionic polymer flocculant is not particularly limited, it is 0.1 to 100 mg / L with respect to the organic wastewater from the viewpoint of effect and economy.
(“Liter”, hereinafter the same).
【００１０】陽イオン性高分子凝集剤の添加後、無機凝
集剤、または、無機凝集剤と陰イオン性高分子凝集剤を
添加した後に生成したフロックの分離手段は、沈澱分
離、浮上分離、濾過などいずれの手段でもよい。After the addition of the cationic polymer flocculant, the inorganic flocculant, or the floc formed after the addition of the inorganic flocculant and the anionic polymer flocculant is separated by precipitation separation, flotation separation, filtration Any means may be used.
【００１１】陰イオン界面活性剤が含まれる有機性廃水
に、陽イオン性高分子凝集剤を添加すると、この陽イオ
ン性高分子凝集剤が陰イオン界面活性剤と結合し、殺菌
効果が減少する。このままでは、不溶化されず殺菌効果
の減少が安定しないので、無機凝集剤を添加することが
必要である。この不溶化した凝集物は固液分離せずに、
残存するＴＭＡＨ等のＴＡＡＨなどの有機物の生物処理
を行ってもよいが、固液分離して得られる処理水を生物
処理するのが、生物処理の効率の点で好ましい。固液分
離せずに生物処理を行うと、凝集物は生物処理されない
にしても、汚泥として除去することができる。上記の不
溶化した凝集物はこのままでは不安定な微細フロックで
あるので、陰イオン性高分子凝集剤を添加してフロック
を粗大化し、固液分離し易くするのが好ましい。When a cationic polymer flocculant is added to an organic wastewater containing an anionic surfactant, the cationic polymer flocculant binds to the anionic surfactant and the bactericidal effect is reduced. . In this state, it is not insolubilized and the reduction of the bactericidal effect is not stable. Therefore, it is necessary to add an inorganic coagulant. This insolubilized aggregate does not undergo solid-liquid separation,
Biological treatment of remaining organic matter such as TAAH such as TMAH may be performed, but biological treatment of treated water obtained by solid-liquid separation is preferable in terms of biological treatment efficiency. When biological treatment is performed without solid-liquid separation, aggregates can be removed as sludge even if biological treatment is not performed. Since the above insolubilized aggregate is unstable fine floc as it is, it is preferable to add an anionic polymer flocculant to coarsen the floc and facilitate solid-liquid separation.
【００１２】生物処理の方法は、特に限定されないが、
例えば、好気性の活性汚泥法、浸漬濾床法、また、ＵＡ
ＳＢ法（「UPFLOW ANAEROBIC SLUDGE BLANKET 」法、即
ち、上向流嫌気性汚泥床法）等の嫌気性処理でもよい。
なお、何れの方法でも、過剰となった汚泥はケーキの形
として除去していくのは、勿論である。The method of biological treatment is not particularly limited.
For example, aerobic activated sludge method, immersion filter bed method, UA
Anaerobic treatment such as SB method ("UPFLOW ANAEROBIC SLUDGE BLANKET" method, that is, upflow anaerobic sludge bed method) may be used.
In any method, the excess sludge is naturally removed as a cake.
【００１３】活性汚泥法は、フロック状の生物性増殖体
（活性汚泥）と処理すべき有機性廃水とを一様に混和・
曝気して処理する方法である。この連続法は、例えば、
有機性廃水を連続的に少なくとも曝気槽、沈澱池の順で
送り、曝気槽での曝気段階の後に沈澱池での固液分離段
階を行い、ここで分離した汚泥の一部を返送して廃水と
混合する方法で、回分法は、有機性廃水の供給を間欠的
に行い、その都度曝気と固液分離を行い、汚泥の一部の
返送を行わない方法である。In the activated sludge method, floc-like biological propagation material (activated sludge) is uniformly mixed with organic wastewater to be treated.
This is a method of treating by aeration. This continuous method, for example,
The organic wastewater is continuously fed at least in the order of the aeration tank and the sedimentation basin.After the aeration step in the aeration tank, the solid-liquid separation step in the sedimentation basin is performed, and a part of the separated sludge is returned to the wastewater. The batch method is a method of intermittently supplying organic wastewater, performing aeration and solid-liquid separation each time, and not returning a part of the sludge.
【００１４】浸漬濾床法は、処理槽内に微生物の着生し
た濾床を設け、被処理水としての有機性廃水を濾床の上
部又は下部から下向流又は上向流で流入させ、その濾床
を有機性廃水中に浸漬させて、上記微生物の働きによっ
て有機性廃水中の有機物等を生物学的に分解除去する有
機性廃水処理方法であり、好気性微生物処理も嫌気性微
生物処理も行えるが、前者の場合は空気等の酸素含有ガ
スや酸素ガスを吹き込んで曝気を行う。浸漬濾床法にお
いて濾床を構成するために用いることができる充填材
（濾材）としては、特に限定されず、例えば、人工石、
砂利、砕石、ラシヒリング、粒状の発泡プラスチック充
填材、比重１以下の粒状の多孔性プラスチック充填材、
円筒網目状プラスチック充填材等を挙げることができ
る。In the immersion filter bed method, a filter bed on which microorganisms have set is provided in a treatment tank, and organic wastewater as water to be treated is caused to flow in a downward or upward flow from the upper or lower part of the filter bed. An organic wastewater treatment method in which the filter bed is immersed in organic wastewater to biologically decompose and remove organic matter and the like in the organic wastewater by the action of the microorganisms. In the former case, aeration is performed by blowing an oxygen-containing gas such as air or an oxygen gas. The filler (filter material) that can be used for forming the filter bed in the immersion filter bed method is not particularly limited, and examples thereof include artificial stone,
Gravel, crushed stone, Raschig ring, granular foamed plastic filler, granular porous plastic filler with a specific gravity of 1 or less,
A cylindrical mesh-like plastic filler can be used.
【００１５】ＵＡＳＢ法は、処理槽の下部から流入した
被処理水としての有機性廃水を、槽内に保有されている
嫌気性生物汚泥のブランケットに上向流で通水し、該有
機性廃水中の有機物を嫌気性生物学的な反応により生物
汚泥とガスに分解させる有機性廃水処理方法である。In the UASB method, organic wastewater as the water to be treated, which has flowed in from the lower part of the treatment tank, is passed upward through an anaerobic biological sludge blanket held in the tank, and the organic wastewater is discharged. This is an organic wastewater treatment method in which organic matter in the water is decomposed into biological sludge and gas by an anaerobic biological reaction.
【００１６】[0016]
【発明の実施の形態】次に、本発明の好ましい実施の形
態を説明するが、本発明がこれらに限定されるものでな
いことは言うまでもない。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below, but it goes without saying that the present invention is not limited to these embodiments.
【００１７】実施形態１ 実施形態１では、凝集槽に陰イオン界面活性剤が含まれ
る有機性廃水が流入し、陽イオン性高分子凝集剤と無機
凝集剤がこの順序で添加され、ｐＨ調整を行う。その
後、陰イオン性高分子凝集剤が添加される。大きなフロ
ックの生成した処理水は分離槽に送られ、ここでフロッ
クが分離され、フロックが除去された処理水は生物処理
槽に送られ、残存した有機物が生物処理により除去され
る。Embodiment 1 In Embodiment 1, an organic wastewater containing an anionic surfactant flows into a flocculation tank, and a cationic polymer flocculant and an inorganic flocculant are added in this order to adjust pH. Do. Thereafter, an anionic polymer flocculant is added. The treated water in which the large flocs are generated is sent to a separation tank, where the flocs are separated, and the treated water from which the flocs have been removed is sent to a biological treatment tank, and the remaining organic matter is removed by biological treatment.
【００１８】実施形態２ 実施形態２では、凝集槽に陰イオン界面活性剤が含まれ
る有機性廃水が流入し、陽イオン性高分子凝集剤と無機
凝集剤がこの順序で添加され、ｐＨ調整を行う。微細フ
ロックが含まれる処理水はそのまま生物処理槽に送ら
れ、水中に残存した有機物が生物処理により除去され
る。Embodiment 2 In Embodiment 2, an organic wastewater containing an anionic surfactant flows into a coagulation tank, and a cationic polymer coagulant and an inorganic coagulant are added in this order to adjust pH. Do. The treated water containing the fine flocs is sent to the biological treatment tank as it is, and the organic matter remaining in the water is removed by biological treatment.
【００１９】[0019]
【実施例】以下、比較例と対比して、実施例により本発
明を説明するが、これらの実施例により本発明が限定さ
れるものでないことは言うまでもない。EXAMPLES Hereinafter, the present invention will be described by way of examples in comparison with comparative examples, but it is needless to say that the present invention is not limited by these examples.
【００２０】住友ベークライト株式会社製の半導体用現
像液ＣＲＳ−８２０（ＴＭＡＨ１〜２重量％、陰イオン
界面活性剤０．１〜１．０重量％）が含まれる有機性廃
水について生物処理実験を行い、該廃水に含まれる有機
物の生物分解性を調べた。生物処理実験は、試料（生物
処理実験に供した原水）３００ｍｌに栄養無機元素と緩
衝液と植種物質（種汚泥）を所定量添加し、２０℃で５
日間以上培養した。ここで、上記の「所定量」とは、表
１に示す各薬品濃度となる様な、また、種汚泥濃度が約
１０００ｍｇ／Ｌとなる様な量である。以下の各表にお
いて、原水のＴＯＣがかなり異なっているが、実験日が
異なるために有機性廃水の水質が変動したもので、特に
意味は無い。A biological treatment experiment was conducted on an organic wastewater containing a developer CRS-820 (TMAH 1-2% by weight, anionic surfactant 0.1-1.0% by weight) manufactured by Sumitomo Bakelite Co., Ltd. The biodegradability of organic matter contained in the wastewater was examined. In the biological treatment experiment, a predetermined amount of a nutrient inorganic element, a buffer solution, and a seed material (seed sludge) were added to 300 ml of a sample (raw water subjected to the biological treatment experiment), and the mixture was added at 20 ° C.
Cultured for more than one day. Here, the “predetermined amount” is an amount such that each chemical concentration shown in Table 1 is obtained, and a seed sludge concentration is approximately 1000 mg / L. In each of the tables below, the TOC of the raw water is quite different, but the experiment date is different and the water quality of the organic wastewater fluctuates, and it has no particular meaning.
【００２１】[0021]
【表１】 Ｋ２ＨＰＯ４ ０．３６３ｇ／Ｌ ＫＨ２ＰＯ４ ０．１４２ｇ／Ｌ Ｎａ２ＨＰＯ４・１２Ｈ２Ｏ ０．７４３ｇ／Ｌ ＮＨ４Ｃｌ ０．０２８ｇ／Ｌ ＭｇＳＯ４・７Ｈ２Ｏ ０．１５０ｇ／Ｌ ＣａＣｌ２・２Ｈ２Ｏ ０．２４３ｇ／Ｌ ＦｅＣｌ３・６Ｈ２Ｏ ０．００２ｇ／Ｌ [Table 1] K2HPO4 0.363g / L KH2PO4 0.142 g / L Na2HPO4・ 12H2O 0.743 g / L NH4Cl 0.028 g / L MgSO4・ 7H2O 0.150 g / L CaCl2・ 2H2O 0.243 g / L FeCl3・ 6H2O 0.002g / L
【００２２】比較例１ 上記廃水をそのまま原水として無処理で生物処理実験に
供した。その実験結果を表２に示す。Comparative Example 1 The wastewater was used as raw water without any treatment for biological treatment experiments. Table 2 shows the experimental results.
【００２３】[0023]
【表２】 原水 処理水 ＴＯＣ（ｍｇ／Ｌ） ４８４ ４４１ ＴＯＣ除去率（％） − ９ 分解日数 − ６ [Table 2] Raw water Treated water TOC (mg / L) 484 441 TOC removal rate (%)-9Decomposition days -6
【００２４】実施例１ 上記廃水に陽イオン性高分子凝集剤オルフロックＣＬ−
６０２（オルガノ株式会社製、ジアルキルアミンとエピ
クロルヒドリンの縮合物）を５０ｍｇ／Ｌ添加した後
に、無機凝集剤ＰＡＣ５００ｍｇ／Ｌ、陰イオン性高分
子凝集剤オルフロックＯＡ−２３（オルガノ株式会社
製、アクリルアミドとアクリル酸塩の共重合物）を１ｍ
ｇ／Ｌ添加し、ｐＨ７で凝集処理し、フロックを分離
し、残余の処理水を原水として生物処理実験に供した。
その実験結果を表３に示す。Example 1 A cationic polymer flocculant, Orfloc CL-
After adding 50 mg / L of 602 (condensate of dialkylamine and epichlorohydrin, manufactured by Organo Corporation), 500 mg / L of inorganic coagulant PAC and Orfloc OA-23 anionic polymer coagulant (manufactured by Organo Corporation, acrylamide and Acrylate copolymer)
g / L was added, and the flocculation treatment was performed at pH 7, the floc was separated, and the remaining treated water was used as raw water for biological treatment experiments.
Table 3 shows the experimental results.
【００２５】[0025]
【表３】 原水 処理水 ＴＯＣ（ｍｇ／Ｌ） ４２８ １７ ＴＯＣ除去率（％） − ９６ 分解日数 − １０ [Table 3] Raw water Treated water TOC (mg / L) 428 17 TOC removal rate (%) -96Decomposition days -10
【００２６】実施例２ 上記廃水に陽イオン性高分子凝集剤オルフロックＣＬ−
６０２を２５ｍｇ／Ｌ添加した後に、無機凝集剤ＰＡＣ
１００ｍｇ／Ｌを添加して凝集処理し、フロックを残存
させたままの処理水を原水として生物処理実験に供し
た。その実験結果を表４に示す。Example 2 A cationic polymer flocculant, Orfloc CL-
After adding 25 mg / L of 602, the inorganic coagulant PAC
100 mg / L was added for coagulation treatment, and the treated water with the floc remaining was used as raw water for biological treatment experiments. Table 4 shows the experimental results.
【００２７】[0027]
【表４】 原水 処理水 ＴＯＣ（ｍｇ／Ｌ） ２４１ １２ ＴＯＣ除去率（％） − ９５ 分解日数 − ５ [Table 4] Raw water Treated water TOC (mg / L) 241 12 TOC removal rate (%) -95Decomposition days -5
【００２８】比較例２ 上記廃水に陽イオン性高分子凝集剤オルフロックＣＬ−
６０２を５０ｍｇ／Ｌ添加した後に、無機凝集剤の添加
を行わず、陰イオン性高分子凝集剤オルフロックＯＡ−
２３を１ｍｇ／Ｌ添加し、ｐＨを７に調整したが、フロ
ックが生成せず、固液分離は不可能であった。また、そ
の生物処理実験結果も下記表６とほぼ同じ結果で劣った
ものであった。Comparative Example 2 A cationic polymer flocculant, Orfloc CL-
After adding 50 mg / L of 602, no inorganic coagulant was added, and the anionic polymer coagulant Orfloc OA-
23 was added at 1 mg / L and the pH was adjusted to 7, but no floc was formed and solid-liquid separation was impossible. In addition, the results of the biological treatment experiment were almost inferior to the results shown in Table 6 below.
【００２９】比較例３ 上記廃水に無機凝集剤ＰＡＣ５００ｍｇ／Ｌを添加した
後、陰イオン性高分子凝集剤オルフロックＯＡ−２３を
１ｍｇ／Ｌ添加し、ｐＨ７で凝集処理し、フロックを分
離し、残余の処理水を原水として生物処理実験に供し
た。その実験結果を表５に示す。Comparative Example 3 After adding 500 mg / L of an inorganic flocculant PAC to the above wastewater, 1 mg / L of an anionic polymer flocculant Orfloc OA-23 was added, and flocculation treatment was performed at pH 7 to separate floc. The remaining treated water was used as raw water for biological treatment experiments. Table 5 shows the experimental results.
【００３０】[0030]
【表５】 原水 処理水 ＴＯＣ（ｍｇ／Ｌ） ４２８ ２９８ ＴＯＣ除去率（％） − ３０ 分解日数 − １０ [Table 5] Raw water Treated water TOC (mg / L) 428 298 TOC removal rate (%) -30Decomposition days -10
【００３１】比較例４ 上記廃水に陽イオン性高分子凝集剤オルフロックＣＬ−
６０２を２５ｍｇ／Ｌ添加して良く混合した。この処理
水を原水として生物処理実験に供した。その実験結果を
表６に示す。Comparative Example 4 A cationic polymer flocculant, Orfloc CL-
602 was added at 25 mg / L and mixed well. This treated water was used as a raw water in a biological treatment experiment. Table 6 shows the experimental results.
【００３２】[0032]
【表６】 原水 処理水 ＴＯＣ（ｍｇ／Ｌ） ２４１ １３８ ＴＯＣ除去率（％） − ４３ 分解日数 − ５ [Table 6] Raw water Treated water TOC (mg / L) 241 138 TOC removal rate (%) -43Decomposition days -5
【００３３】比較例５ 上記廃水に無機凝集剤ＰＡＣを１００ｍｇ／Ｌ添加して
凝集処理し、フロックを残存させたままの処理水を原水
として生物処理実験に供した。その実験結果を表７に示
す。Comparative Example 5 The wastewater was subjected to a coagulation treatment by adding 100 mg / L of an inorganic coagulant PAC, and the treated water with the remaining floc was used as a raw water for a biological treatment experiment. Table 7 shows the experimental results.
【００３４】[0034]
【表７】 原水 処理水 ＴＯＣ（ｍｇ／Ｌ） ２４１ ２０３ ＴＯＣ除去率（％） − １６ 分解日数 − ５ [Table 7] Raw water Treated water TOC (mg / L) 241 203 TOC removal rate (%) -16Decomposition days -5
【００３５】凝集剤を一切使わなかった比較例１、無機
凝集剤を使わなかった比較例２と４、陽イオン性高分子
凝集剤を使わなかった比較例３と５に比べ、実施例１と
２においてはＴＯＣ除去率が極めて高いことが分かる。In comparison with Comparative Example 1 in which no coagulant was used, Comparative Examples 2 and 4 in which no inorganic coagulant was used, and Comparative Examples 3 and 5 in which no cationic polymer coagulant was used, Examples 1 and 2 2, the TOC removal rate is extremely high.
【００３６】[0036]
【発明の効果】本発明による陰イオン界面活性剤含有有
機性廃水の処理方法によれば、陽イオン性高分子凝集剤
と無機凝集剤の添加によって陰イオン界面活性剤の殺菌
効果を減少させることができるので、生物処理を良好に
行うことができる。本発明による陰イオン界面活性剤含
有有機性廃水の処理方法は、無機凝集剤の添加量が少な
くて済むので、無機凝集剤の添加後、微細フロックを除
去せずにそのまま生物処理しても生物分解への影響が少
なく、このようにした場合は、凝集処理後の固液分離手
段を無くすこともでき、良好な生物処理効率を確保でき
るので、廃水処理設備の設置面積、イニシャルコストと
ランニングコストが著しく減少でき、経済性に優れた方
法である。According to the method for treating organic wastewater containing an anionic surfactant according to the present invention, the sterilizing effect of the anionic surfactant is reduced by adding a cationic polymer flocculant and an inorganic flocculant. Therefore, biological treatment can be favorably performed. The method of treating an organic wastewater containing an anionic surfactant according to the present invention requires only a small amount of the inorganic coagulant. Therefore, after the inorganic coagulant is added, the biological treatment can be performed without removing the fine floc. The effect on the decomposition is small, and in this case, the solid-liquid separation means after the coagulation treatment can be eliminated, and good biological treatment efficiency can be secured, so the installation area of the wastewater treatment equipment, initial cost and running cost Can be significantly reduced, and this method is economical.
フロントページの続き Ｆターム(参考） 4D003 AA01 BA02 CA03 EA01 EA19 EA22 EA23 EA30 FA06 4D028 AB00 AC01 AC09 4D040 AA14 4D062 BA19 BA21 BB09 BB12 CA07 DA04 DA06 DA13 DA16 DB19 DB23 DB25 DB26 DC07 EA02 EA06 EA14 EA32 EA33 EA35 FA26 Continued on front page F term (reference) 4D003 AA01 BA02 CA03 EA01 EA19 EA22 EA23 EA30 FA06 4D028 AB00 AC01 AC09 4D040 AA14 4D062 BA19 BA21 BB09 BB12 CA07 DA04 DA06 DA13 DA16 DB19 DB23 DB25 DB26 DC07 EA02 EA06 EA33
Claims (3)
水の処理において、陽イオン性高分子凝集剤を添加した
後、更に無機凝集剤を添加して得た処理水を生物処理す
ることを特徴とする有機性廃水処理方法。In the treatment of an organic wastewater containing an anionic surfactant, a biological treatment is carried out after adding a cationic polymer flocculant and further adding an inorganic flocculant. Organic wastewater treatment method characterized.
水を生物処理することを特徴とする請求項１に記載の有
機性廃水処理方法。2. The organic wastewater treatment method according to claim 1, wherein treated water obtained by solid-liquid separation of the treated water is subjected to biological treatment.
剤を添加し、生成したフロックを分離して得られる処埋
水を生物処理することを特徴とする請求項１に記載の有
機性廃水処理方法。3. The organic water according to claim 1, wherein an anionic polymer flocculant is further added to the treated water, and the treated water obtained by separating generated flocs is subjected to biological treatment. Wastewater treatment method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4561499A JP2000237760A (en) | 1999-02-23 | 1999-02-23 | Organic waste water treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4561499A JP2000237760A (en) | 1999-02-23 | 1999-02-23 | Organic waste water treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000237760A true JP2000237760A (en) | 2000-09-05 |
Family
ID=12724266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4561499A Pending JP2000237760A (en) | 1999-02-23 | 1999-02-23 | Organic waste water treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000237760A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006000828A (en) * | 2004-06-21 | 2006-01-05 | Japan Organo Co Ltd | Organic wastewater treatment method |
| JP2006000791A (en) * | 2004-06-18 | 2006-01-05 | Fuji Xerox Co Ltd | Wastewater treatment method |
| JP2007236221A (en) * | 2006-03-06 | 2007-09-20 | Fuji Electric Systems Co Ltd | Method for separation of microorganism |
| JP2009208012A (en) * | 2008-03-05 | 2009-09-17 | Japan Organo Co Ltd | Water treating method and water treating apparatus |
| WO2009119521A1 (en) * | 2008-03-26 | 2009-10-01 | 株式会社神鋼環境ソリューション | Method for processing waste water |
| JP2010221112A (en) * | 2009-03-23 | 2010-10-07 | Kobelco Eco-Solutions Co Ltd | Wastewater treatment method |
| JP2010274207A (en) * | 2009-05-29 | 2010-12-09 | Japan Organo Co Ltd | Method and apparatus for anaerobic biological treatment |
| JP2012045522A (en) * | 2010-08-30 | 2012-03-08 | Hitachi Ltd | Sewage purifying method, flocculant, sewage purifying apparatus, and oil extracting system using the apparatus |
| WO2014126081A1 (en) * | 2013-02-13 | 2014-08-21 | 栗田工業株式会社 | Method for treating development wastewater from color filter production step |
-
1999
- 1999-02-23 JP JP4561499A patent/JP2000237760A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006000791A (en) * | 2004-06-18 | 2006-01-05 | Fuji Xerox Co Ltd | Wastewater treatment method |
| JP4529554B2 (en) * | 2004-06-18 | 2010-08-25 | 富士ゼロックス株式会社 | Wastewater treatment method |
| JP2006000828A (en) * | 2004-06-21 | 2006-01-05 | Japan Organo Co Ltd | Organic wastewater treatment method |
| JP2007236221A (en) * | 2006-03-06 | 2007-09-20 | Fuji Electric Systems Co Ltd | Method for separation of microorganism |
| JP2009208012A (en) * | 2008-03-05 | 2009-09-17 | Japan Organo Co Ltd | Water treating method and water treating apparatus |
| WO2009119521A1 (en) * | 2008-03-26 | 2009-10-01 | 株式会社神鋼環境ソリューション | Method for processing waste water |
| JP2009255067A (en) * | 2008-03-26 | 2009-11-05 | Kobelco Eco-Solutions Co Ltd | Method for processing waste water |
| CN101980970A (en) * | 2008-03-26 | 2011-02-23 | 株式会社神钢环境舒立净 | Method for processing waste water |
| JP2010221112A (en) * | 2009-03-23 | 2010-10-07 | Kobelco Eco-Solutions Co Ltd | Wastewater treatment method |
| JP2010274207A (en) * | 2009-05-29 | 2010-12-09 | Japan Organo Co Ltd | Method and apparatus for anaerobic biological treatment |
| JP2012045522A (en) * | 2010-08-30 | 2012-03-08 | Hitachi Ltd | Sewage purifying method, flocculant, sewage purifying apparatus, and oil extracting system using the apparatus |
| WO2014126081A1 (en) * | 2013-02-13 | 2014-08-21 | 栗田工業株式会社 | Method for treating development wastewater from color filter production step |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8192626B2 (en) | Wastewater chemical/biological treatment method for open water discharge | |
| US20070151932A1 (en) | Removal of phosphorous from wastewater | |
| CN108017236A (en) | A kind of High Strength Organic Pharmaceutical Wastewater processing method | |
| US20220177341A1 (en) | Sewage treatment method | |
| CN106673255A (en) | Wastewater treatment method and wastewater treatment device | |
| CN108033649A (en) | A kind of pharmacy wastewater treatment method | |
| TW524778B (en) | Waste water treatment method and waste water treatment apparatus | |
| JP2000237760A (en) | Organic waste water treatment | |
| CN102765859A (en) | Treatment method for removing arsenic and COD in wastewater in gallium arsenide wafer production treatment simultaneously | |
| JP2005000801A (en) | Waste water treatment method | |
| JP2001276851A (en) | Drain treatment equipment | |
| Wang et al. | Treatment of tannery effluents by surface adsorption | |
| JP3793937B2 (en) | Silicon wafer polishing wastewater treatment method | |
| JP3794736B2 (en) | Treatment method of wastewater containing high concentration phosphorus and ammonia nitrogen | |
| JP5095882B2 (en) | Waste nitric acid treatment method | |
| US11661366B2 (en) | Process for selenium removal with biological, chemical and membrane treatment | |
| JP2009039620A (en) | Method and system for reducing amount of excess sludge | |
| CN103848520A (en) | Process method for deeply treating tannery wastewater by using Fenton reagent oxidation method | |
| JP2000334486A (en) | Advanced treatment of biologically treated water | |
| CN206368083U (en) | Wastewater treatment equipment | |
| JPH03151100A (en) | Treatment of organic sewage | |
| CN110627314A (en) | Method for efficiently removing total nitrogen in printing and dyeing wastewater by multi-process combination | |
| JP2006305555A (en) | Apparatus and method for treating waste water | |
| CN115536147B (en) | Integrated synchronous biological denitrification and hardness removal method | |
| Hoseini et al. | Biodegradation of linear alkyl benzene sulfonate by sequencing batch reactor in sanitary wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050912 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20070706 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070711 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20071113 |