JPS6168194A - Treatment of waste water containing cutting oil - Google Patents
Treatment of waste water containing cutting oilInfo
- Publication number
- JPS6168194A JPS6168194A JP18998384A JP18998384A JPS6168194A JP S6168194 A JPS6168194 A JP S6168194A JP 18998384 A JP18998384 A JP 18998384A JP 18998384 A JP18998384 A JP 18998384A JP S6168194 A JPS6168194 A JP S6168194A
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen peroxide
- waste water
- cutting oil
- added
- ferrous sulfate
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Description
【発明の詳細な説明】 主業上血机且止艷 本発明は切削油含有廃水の処理方法に関する。[Detailed description of the invention] Main occupation: Blood machine and stop ship The present invention relates to a method for treating wastewater containing cutting oil.
自動車、機械加工、金属加工等の工場では、各種の切削
油及び洗浄剤を使用しており、汚染又は能力の低下した
切削油を多量に含む濃厚廃水及び洗浄剤を含む洗浄廃水
とを多量に排出する場合が多い。両廃水とも汚濁負荷は
大きく、各種の浄化処理を必要とするが、特に、濃厚廃
水はｎ−へキサン抽出物質、ＢＯＤ、ＣＯＤがいずれも
致方■／ｌに達する場合があり、著しい汚濁源となって
いる。本発明は濃厚廃水及び洗浄廃水の両方に通用しう
る処理方法に関する。Automotive, machining, metal processing, etc. factories use various cutting oils and cleaning agents, and produce large amounts of concentrated wastewater containing large amounts of contaminated or degraded cutting oil and cleaning wastewater containing cleaning agents. Often discharged. Both types of wastewater have a large pollution load and require various purification treatments, but concentrated wastewater in particular has n-hexane extractables, BOD, and COD that can all reach levels of 2/l, making it a significant source of pollution. It becomes. The present invention relates to a treatment method applicable to both concentrated wastewater and washing wastewater.
ｌ米旦狡■
この種の切削油含有廃水を処理するには、従来、該廃水
を限外−過膜に通し、得られた処理水をフェントン試薬
を用いて酸化処理した後、凝集し、固液分離する方法が
行われている。Conventionally, to treat this type of wastewater containing cutting oil, the wastewater is passed through an ultrafiltration membrane, the resulting treated water is oxidized using Fenton's reagent, and then coagulated. A method of solid-liquid separation is being used.
が′シ゛ 占
しかし、このような方法では、第一鉄塩が過酸化水素に
対して多くなると、発生スラッジが多くなり、処理水に
Ｆｅ２÷が残留し、ＣＯＤ値に影響を及ぼし、また、沈
澱槽でＦｅｓ＋の着色が起こる。他方、過酸化水素の添
加量が増すに従って、ＣＯＤ除去率も向上するが、過酸
化水素がＦｅ２＋に対して多くなると、汚泥中に気泡が
発生し、沈澱槽で汚泥が浮上し、また、残留Ｈ２Ｏ２が
ＣＯＤ値に影響を与え、処理水が悪くなる。そこで、過
酸化水素及び第一鉄塩を適正に添加する必要がある。添
加量を制御するには、酸化還元電位による自動制御の方
法があるが、Ｈ２０２及びＦｅ２＋について、それぞれ
制御しなければならないので、メンテナンスが複雑にな
るという欠点があった。However, in such a method, if the amount of ferrous salt is larger than that of hydrogen peroxide, more sludge will be generated, and Fe2÷ will remain in the treated water, which will affect the COD value. Coloration of Fes+ occurs in the settling tank. On the other hand, as the amount of hydrogen peroxide added increases, the COD removal rate also improves, but when the amount of hydrogen peroxide increases relative to Fe2+, bubbles are generated in the sludge, the sludge floats to the surface in the settling tank, and the remaining H2O2 affects the COD value and the treated water deteriorates. Therefore, it is necessary to appropriately add hydrogen peroxide and ferrous salt. In order to control the amount added, there is an automatic control method using redox potential, but since H202 and Fe2+ must be controlled individually, there is a drawback that maintenance becomes complicated.
従って、本発明は、前記の問題点を解決し、複雑な制御
を必要とせずに、多量のスラッジを発生せず、良好な水
質の処理水を安定して得ることのできる処理方法を提供
することを目的とする。Therefore, the present invention solves the above problems and provides a treatment method that does not require complicated control, does not generate a large amount of sludge, and can stably obtain treated water of good quality. The purpose is to
口 占 ′ るんめの びその
本発明は、過剰の過酸化水素をマンガン酸化物で分解す
ることによって前記の問題点を解決したものである。The present invention solves the above problems by decomposing excess hydrogen peroxide with manganese oxide.
即ち、本発明による切削油含有廃水の処理方法は、該廃
水を限外−過する第１工程、次いで該処理水をｐＨ２〜
４で過酸化水素及び硫酸第一鉄により酸化処理する第２
工程、次いで酸化処理水をアルカリの添加によりｐＨ１
０に調整した後、マンガン酸化物を添加して過剰の過酸
化水素を分解除去し、酸化生成物、鉄の水酸化物等を析
出、凝集させる第３工程、次いで析出、凝集させた固形
物を固液分離する第４工程からなることを特徴とする。That is, the method for treating cutting oil-containing wastewater according to the present invention includes a first step of ultrafiltering the wastewater, and then adjusting the treated water to pH 2-2.
The second step is oxidation treatment with hydrogen peroxide and ferrous sulfate in step 4.
process, then the oxidized water is adjusted to pH 1 by adding alkali.
After adjusting to 0, the third step is to add manganese oxide to decompose and remove excess hydrogen peroxide, and precipitate and coagulate oxidation products, iron hydroxide, etc., followed by the precipitated and coagulated solids. It is characterized by comprising a fourth step of solid-liquid separation.
詳述すれば、本発明方法においては、切削油含有廃水を
まず限外−過膜に通して限外？過し、コロイド粒子を除
去する０次いで、第二工程において、限外−過した処理
水をフェントン試薬により酸化処理する。その際、過酸
化水素をＯ（酸素）としてＣＯＤに対して当量以上、硫
酸第一鉄を第一鉄イオンとして過酸化水素中の０に対し
て重量比で３〜５倍添加するのが好ましい。この酸化処
理はｐＨ２〜４で好適に進行するので、必要に応じて鉱
酸又はアルカリを添加してｐＨ調整を行う。Specifically, in the method of the present invention, wastewater containing cutting oil is first passed through an ultrafiltration membrane. Then, in a second step, the ultra-filtered treated water is oxidized using Fenton's reagent. At that time, it is preferable to add hydrogen peroxide as O (oxygen) in an equivalent amount or more to COD, and ferrous sulfate as ferrous ion to add 3 to 5 times the weight of 0 in hydrogen peroxide. . Since this oxidation treatment proceeds suitably at a pH of 2 to 4, the pH is adjusted by adding a mineral acid or alkali as necessary.
次に、酸化処理水にアルカリ剤を添加してｐＨを１０に
調整した後、マンガン酸化物を添加して過剰のＨ２Ｏ２
を分解させる。Next, an alkaline agent is added to the oxidized water to adjust the pH to 10, and then manganese oxide is added to remove excess H2O2.
decompose.
マンガン酸化物としては、例えば、二酸化マンガン又は
三二酸化マンガンを使用することができる。As the manganese oxide, for example, manganese dioxide or manganese sesquioxide can be used.
第３工程において、酸化生成物や鉄の水酸化物を凝集さ
せるため、高分子凝集剤を添加することができる。高分
子凝集剤としては、アニオン系、カチオン系又はノニオ
ン系の任意の凝集剤を使用することができる。In the third step, a polymer flocculant can be added to flocculate the oxidation product and iron hydroxide. As the polymer flocculant, any anionic, cationic or nonionic flocculant can be used.
更に、凝集フロックを沈澱槽等で固液分離した後の処理
水を、必要に応じて、砂に過処理に付すことができる。Furthermore, the treated water after the solid-liquid separation of the coagulated flocs in a settling tank or the like can be subjected to sand overtreatment, if necessary.
本発明方法における各工程をそれぞれ別個の槽で行うこ
とにより、本発明方法を連続的に実施することができる
。By carrying out each step in the method of the present invention in separate tanks, the method of the present invention can be carried out continuously.
１里週
次に、実施例に基づいて本発明を詳述するが、本発明は
これに限定されるものではない。The present invention will now be described in detail based on examples, but the present invention is not limited thereto.
実施例１
某自動車工場の機械、金属加工工程より汚染又は能力低
下時に排出された濃厚な切削油を含有する濃厚廃水を圧
力５ｋｇ／ｃｄ、流速２．２ｍ／ｓで限外−過膜に通し
、得られた処理水（ＣＯＤｌｏｏ−／ｌ）を１１採水し
、該処理水に過酸化水素（Ｈ２Ｏ２） ９３５ ■／
Ｉｔ及び硫酸第一鉄（ＦｅＳＯ＊ ’７Ｈ２０）６５７
０■／ＩＩを添加した後、硫酸を添加してｐＨ３に保っ
て酸化処理した。該酸化処理水に苛性ソーダを添加して
ｐＨ１０に調整し、次いで二酸化マンガン１００ｍｇ／
ｊ！を添加して残留Ｈ２Ｏ２を分解除去した。その後、
アニオン系高分子凝集剤（ハイモロツク５Ｓ−１３０）
２■／ｌを添加し、静置して上澄液を処理水として得る
。Example 1 Concentrated wastewater containing concentrated cutting oil discharged from a certain automobile factory's machinery and metal processing process when it becomes contaminated or its capacity decreases is passed through an ultra-filter membrane at a pressure of 5 kg/cd and a flow rate of 2.2 m/s. , 11 samples of the obtained treated water (CODloo-/l) were added, and hydrogen peroxide (H2O2) was added to the treated water.
It and ferrous sulfate (FeSO* '7H20) 657
After adding 0■/II, sulfuric acid was added to maintain the pH at 3 for oxidation treatment. Caustic soda was added to the oxidized water to adjust the pH to 10, and then 100 mg of manganese dioxide/
j! was added to decompose and remove residual H2O2. after that,
Anionic polymer flocculant (Himoloku 5S-130)
2/l was added and allowed to stand to obtain a supernatant liquid as treated water.
得られた処理水のＣＯＤは、３７■／ｅであった。The COD of the obtained treated water was 37 .mu./e.
発旦■立来
本発明方法によれば、切削油含有廃水を複雑な制御機構
を用いることなく、多量のスラッジを発生せず、汚泥中
に気泡を発生することなく、処理することができ、安定
して良好な水質の処理水を得ることができる。According to the method of the present invention, cutting oil-containing wastewater can be treated without using a complicated control mechanism, without generating a large amount of sludge, and without generating air bubbles in the sludge. Treated water of good quality can be obtained stably.
Claims (3)
該処理水をｐＨ２〜４で過酸化水素及び硫酸第一鉄によ
り酸化処理する第２工程、次いで酸化処理水をアルカリ
の添加によりｐＨ１０に調整した後、マンガン酸化物を
添加して過剰の過酸化水素を分解除去し、酸化生成物、
鉄の水酸化物等を析出、凝集させる第３工程、次いで析
出、凝集させた固形物を固液分離する第４工程からなる
ことを特徴とする切削油含有廃水の処理方法。(1) The first step is to ultrafiltrate wastewater containing cutting oil, then the second step is to oxidize the treated water with hydrogen peroxide and ferrous sulfate at pH 2 to 4, and then the oxidized water is treated by adding alkali. After adjusting the pH to 10, manganese oxide is added to decompose and remove excess hydrogen peroxide, and the oxidation products,
A method for treating wastewater containing cutting oil, comprising a third step of precipitating and coagulating iron hydroxide, etc., and a fourth step of separating the precipitated and coagulated solids into solid and liquid.
の範囲第１項記載の方法。(2) The method according to claim 1, wherein the sand is further overtreated after the fourth step.
てＣＯＤに対して当量以上、硫酸第一鉄を第一鉄イオン
として過酸化水素中のＯに対して重量比で３〜５倍添加
する特許請求の範囲第１項記載の方法。(3) In the second step, hydrogen peroxide is used as O (oxygen) in an amount equivalent to or more than COD, and ferrous sulfate is used as ferrous ion, and the weight ratio is 3 to 5 times the amount of O in hydrogen peroxide. A method according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18998384A JPS6168194A (en) | 1984-09-11 | 1984-09-11 | Treatment of waste water containing cutting oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18998384A JPS6168194A (en) | 1984-09-11 | 1984-09-11 | Treatment of waste water containing cutting oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6168194A true JPS6168194A (en) | 1986-04-08 |
Family
ID=16250436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18998384A Pending JPS6168194A (en) | 1984-09-11 | 1984-09-11 | Treatment of waste water containing cutting oil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6168194A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1157972A1 (en) * | 2000-05-26 | 2001-11-28 | Apostolos Vlissidis | A method of processing oil-plant wastes |
| FR2824549A1 (en) * | 2001-05-11 | 2002-11-15 | Patrice Stengel | Treatment of used water-based cutting oil comprises filtration, acidification, two-stage coagulation-flocculation, filtration, oxidation, reduction, alkalization, filtration and adsorption |
| DE4324502B4 (en) * | 1993-02-17 | 2008-04-17 | Environmental Resources Management, Inc. | Oxidative waste treatment process |
| CN102211832A (en) * | 2010-04-01 | 2011-10-12 | 深圳市兰科环境技术有限公司 | Method for treating cutting fluid wastewater by photocatalytic oxidation |
| CN102211830A (en) * | 2010-04-01 | 2011-10-12 | 深圳市兰科环境技术有限公司 | Method for treating cutting liquid wastewater by electro-catalytic oxidation |
| CN109110905A (en) * | 2018-09-03 | 2019-01-01 | 冷应杰 | A kind of sewage advanced oxidation processing unit |
| CN109110904A (en) * | 2018-09-03 | 2019-01-01 | 冷应杰 | A kind for the treatment of process of wastewater from chemical industry |
| WO2021000930A1 (en) * | 2019-07-04 | 2021-01-07 | 西安石油大学 | Method for synergistic degradation treatment of polysaccharides-containing polymer wastewater by controllable oh radical |
-
1984
- 1984-09-11 JP JP18998384A patent/JPS6168194A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4324502B4 (en) * | 1993-02-17 | 2008-04-17 | Environmental Resources Management, Inc. | Oxidative waste treatment process |
| EP1157972A1 (en) * | 2000-05-26 | 2001-11-28 | Apostolos Vlissidis | A method of processing oil-plant wastes |
| FR2824549A1 (en) * | 2001-05-11 | 2002-11-15 | Patrice Stengel | Treatment of used water-based cutting oil comprises filtration, acidification, two-stage coagulation-flocculation, filtration, oxidation, reduction, alkalization, filtration and adsorption |
| CN102211832A (en) * | 2010-04-01 | 2011-10-12 | 深圳市兰科环境技术有限公司 | Method for treating cutting fluid wastewater by photocatalytic oxidation |
| CN102211830A (en) * | 2010-04-01 | 2011-10-12 | 深圳市兰科环境技术有限公司 | Method for treating cutting liquid wastewater by electro-catalytic oxidation |
| CN109110905A (en) * | 2018-09-03 | 2019-01-01 | 冷应杰 | A kind of sewage advanced oxidation processing unit |
| CN109110904A (en) * | 2018-09-03 | 2019-01-01 | 冷应杰 | A kind for the treatment of process of wastewater from chemical industry |
| WO2021000930A1 (en) * | 2019-07-04 | 2021-01-07 | 西安石油大学 | Method for synergistic degradation treatment of polysaccharides-containing polymer wastewater by controllable oh radical |
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