JPH10244254A - Oil-water separating material and oil-water separating method using the same - Google Patents
Oil-water separating material and oil-water separating method using the sameInfo
- Publication number
- JPH10244254A JPH10244254A JP4777397A JP4777397A JPH10244254A JP H10244254 A JPH10244254 A JP H10244254A JP 4777397 A JP4777397 A JP 4777397A JP 4777397 A JP4777397 A JP 4777397A JP H10244254 A JPH10244254 A JP H10244254A
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- Prior art keywords
- oil
- water
- water separation
- water separator
- porous material
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、油分を含む廃水中
から油分を効率よく除去できる油水分離材、及びその油
水分離材を用いた油水分離方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil / water separator capable of efficiently removing oil from wastewater containing oil, and to an oil / water separator using the oil / water separator.
【０００２】[0002]
【従来の技術】従来、例えば、厨房から排出されるよう
な多くの油分を含んでいる廃水は、そのまま下水に放流
することができないので、油分を除去したのち放流する
ようにしている。2. Description of the Related Art Conventionally, wastewater containing a large amount of oil discharged from a kitchen, for example, cannot be discharged to sewage as it is, so that the oil is removed and then discharged.
【０００３】廃水中から油分を除去するには、廃水を貯
留しているタンクの上部の部分、すなわち、油分を多く
含んでいる部分を溢流させたり、あるいはその部分を汲
出して油水を分離したり、または、タンクに油吸着剤を
添加混合したのち、油を吸着した吸着剤を分離して油水
分離するようにしている。さらに、タンクの水面に一部
分が浸漬するように親油性の回転円板を設け、その回転
円板に付着してきた油分をスクレーパで除去する油水分
離装置も提案されている。In order to remove oil from wastewater, an upper part of a tank storing the wastewater, that is, a part containing a large amount of oil is overflowed, or the part is pumped to separate the oil and water. After the oil adsorbent is added to and mixed with the tank, the oil adsorbent is separated to separate oil and water. Further, there has been proposed an oil / water separator in which a lipophilic rotating disk is provided so that a part of the rotating disk is immersed in the water surface of the tank, and oil adhering to the rotating disk is removed by a scraper.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の浮上した油分を溢流させたり、あるいは汲出して油
水分離する場合は、油分中に多くの水分が含まれるの
で、廃棄する量が大きくなって処理コストがかさむとい
う欠点があった。However, in the case of overflowing or pumping out the above-mentioned conventional floating oil, oil and water are separated, so that a large amount of water is contained in the oil, so that the amount of discarded oil becomes large. And the processing cost increases.
【０００５】また、吸着剤を用いる場合は、油分のみを
効果的に吸着できるという特長を有しているが、吸着剤
が高価であるという問題点があった。さらに、回転円板
を用いる場合、回転円板に一度に付着する油分量が少な
く、したがって、処理時間が長時間必要とするととも
に、スクレーパの調整が常時正常に行われないと油水分
離ができないという不都合があった。When an adsorbent is used, it has a feature that it can effectively adsorb only oil, but there is a problem that the adsorbent is expensive. Furthermore, when a rotating disk is used, the amount of oil adhering to the rotating disk at a time is small, so that a long processing time is required and oil-water separation cannot be performed unless the scraper is constantly adjusted normally. There was an inconvenience.
【０００６】そこで、本発明は、上記欠点を解決するた
めになされたものであって、その目的は、本出願人が、
先に、特開平８−１３４５０６号公報等で提案した多孔
質材を利用して効率よく、しかも安価に油水分離を行う
ことのできる油水分離材、及びその分離材を用いた油水
分離方法を提供することにある。Therefore, the present invention has been made to solve the above-mentioned drawbacks, and the object of the present invention is to
An oil-water separation material capable of efficiently and inexpensively separating oil-water using a porous material proposed in Japanese Patent Application Laid-Open No. 8-134506 and the like, and an oil-water separation method using the separation material are provided. Is to do.
【０００７】[0007]
【課題を解決するための手段】本発明に係る油水分離材
は、上記目的を達成するために、金属粉末を焼結処理し
て得られれた多孔質材からなることを特徴としている。
また、前記多孔質材は、親油性剤でコーティングされて
いることを特徴としている。The oil-water separation material according to the present invention is characterized by comprising a porous material obtained by sintering a metal powder to achieve the above object.
Further, the porous material is coated with a lipophilic agent.
【０００８】本発明に係る油水分離方法は、上記目的を
達成するために、油水混合液中に金属粉末を焼結処理し
て得られた多孔質材からなる油水分離材を通過させて、
その油水分離材に油分を吸着させる吸着工程と、前記油
分を吸着している油水分離材に風圧あるいは振動等の物
理的な力を加えて、その油水分離材から油分を分離する
分離工程とからなることを特徴としている。[0008] In order to achieve the above object, the oil-water separation method according to the present invention is to pass an oil-water separation material consisting of a porous material obtained by sintering a metal powder into an oil-water mixture,
From an adsorption step of adsorbing oil to the oil / water separator, and a separation step of applying a physical force such as wind pressure or vibration to the oil / water separator adsorbing the oil to separate the oil from the oil / water separator. It is characterized by becoming.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図１は、一実施の形態に係る油水
分離材１の斜視図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an oil-water separator 1 according to one embodiment.
【００１０】油水分離材１は、本出願人が、先に、特開
平８−１３４５０６号公報で提案した多孔質材を使用す
ることができる。この多孔質材は、アルギン酸ナトリウ
ム水溶液に、Ｎｉ，Ｃｒ，Ｃｕ，Ｍｏ，Ｖ，Ａｇ，Ａ
ｔ，Ｐｔ，Ｍｎ，Ｆｅ，Ｗ，Ｃｏ，Ｐｄ，Ｒｈ，Ｔｉ等
の金属、またはこの金属の合金の金属粉末を添加混合し
てスラリーを作り、そのスラリーを上記金属粉末の焼結
温度以下の温度で焼失する多孔材に含浸させたのち乾燥
させ、乾燥して得られた多孔体を焼結処理して得ること
ができる。As the oil-water separator 1, a porous material previously proposed by the present applicant in Japanese Patent Application Laid-Open No. 8-134506 can be used. This porous material is prepared by adding Ni, Cr, Cu, Mo, V, Ag, A to an aqueous solution of sodium alginate.
A metal powder such as t, Pt, Mn, Fe, W, Co, Pd, Rh, Ti, or a metal powder of an alloy of this metal is added and mixed to form a slurry, and the slurry is heated to a temperature below the sintering temperature of the metal powder. It can be obtained by impregnating a porous material which is burned off at a temperature and then drying, and then sintering the porous body obtained by drying.
【００１１】また、油水分離材１は、本出願人が、先に
特開平８−１３４５０８号公報で提案した多孔質材を使
用することもできる。この多孔質材は、寒天水溶液に、
上述した金属粉末を添加混合してスラリーを作り、その
スラリーを上記金属粉末の焼結温度以下の温度で焼失す
る多孔材に含浸させたのち乾燥させ、乾燥して得られた
多孔体を焼結処理して得ることができる。なお、例え
ば、１８−８ステンレス鋼粉末を金属粉末としたとき
は、腐蝕しにくく、機械的強度の強い油水分離材１とす
ることができる。As the oil-water separation material 1, a porous material previously proposed by the present applicant in Japanese Patent Application Laid-Open No. 8-134508 can be used. This porous material is
The above-mentioned metal powder is added and mixed to form a slurry, and the slurry is impregnated into a porous material which is burned down at a temperature equal to or lower than the sintering temperature of the metal powder, and then dried. It can be obtained by processing. For example, when 18-8 stainless steel powder is used as the metal powder, the oil-water separator 1 that is hardly corroded and has high mechanical strength can be obtained.
【００１２】油水分離材１の形状は、焼結処理前の多孔
材の形状により任意に作ることができるが、好ましく
は、後述する廃水タンクの表面（水面）をほぼ覆うこと
ができ、１０ｍｍ程度の所定の厚さをもたせて、ある程
度の機械的強度が保たれるように構成されている。The shape of the oil-water separation material 1 can be arbitrarily determined according to the shape of the porous material before the sintering process. , So that a certain mechanical strength is maintained.
【００１３】この油水分離材１は、図１のＡに一部を拡
大して示すように、焼結して連結された金属粒子間に多
くの孔が形成され、全体として極めて多孔質に富んだ性
質を有している。As shown in FIG. 1A, a large number of pores are formed between the sintered and connected metal particles, and the oil-water separation material 1 is extremely porous as a whole. Has the property of
【００１４】この油水分離材１は、そのまま油水分離材
とすることもできるが、親油性剤でコーティングする
と、油の吸着効果を高めることができる。親油性剤とし
ては、例えば、四フッ化エチレン（テフロン）等を使用
することができる。The oil / water separating material 1 can be used as it is as an oil / water separating material. However, if it is coated with a lipophilic agent, the effect of adsorbing oil can be enhanced. As the lipophilic agent, for example, ethylene tetrafluoride (Teflon) or the like can be used.
【００１５】図２は、上述の油水分離材１を用いて油水
分離を行う工程図が示されている。以下、工程順に説明
する。FIG. 2 shows a process diagram for performing oil / water separation using the above-mentioned oil / water separation material 1. Hereinafter, description will be made in the order of steps.
【００１６】（ａ）浸漬工程 油分Ｏ及び水分Ｗの混合した廃水を貯留しているタンク
２に油水分離材１が浸漬される。この浸漬に際しては、
油水分離材１の偏平な面を垂直にして行われる。なお、
この油水分離材１の偏平な面の形状は、タンク２内の水
面の形状にほぼ等しく形成されている。(A) Immersion Step The oil-water separator 1 is immersed in a tank 2 storing wastewater in which an oil component O and water W are mixed. During this immersion,
The operation is performed with the flat surface of the oil-water separator 1 being vertical. In addition,
The shape of the flat surface of the oil-water separation material 1 is substantially equal to the shape of the water surface in the tank 2.
【００１７】タンク２内に浸漬された油水分離材１は、
図１（ａ）の二点鎖線で示されるように、上部の油分Ｏ
の層よりも下方で、偏平な面が水平状に保たれる。The oil-water separation material 1 immersed in the tank 2
As shown by the two-dot chain line in FIG.
Below the layer, the flat surface is kept horizontal.
【００１８】（ｂ）引上げ工程 タンク２内に浸漬された油水分離材１は、水平状態を保
ったまま、静かに引上げられる。この引上げの途中、油
水分離材１が油分Ｏの層を通過する際、油水分離材１の
多孔質の開孔部を満たしていた水分Ｗは、水と油の表面
張力の差により、油分Ｏに置換えられて、油分Ｏが油水
分離材１に効果的に吸着される。(B) Pulling Step The oil / water separating material 1 immersed in the tank 2 is pulled gently while keeping the horizontal state. During the pulling, when the oil / water separator 1 passes through the layer of the oil component O, the water W filling the porous opening of the oil / water separator 1 changes due to the difference in surface tension between water and oil. And the oil component O is effectively adsorbed on the oil-water separation material 1.
【００１９】（ｃ）移動工程 油分Ｏを吸着した油水分離材１は、タンク１の上方から
油溜３上に移動される。(C) Movement Step The oil-water separator 1 having adsorbed the oil component O is moved from above the tank 1 onto the oil reservoir 3.
【００２０】（ｄ）分離工程 油溜３の上方に位置する油水分離材１の上方から、その
油水分離材１に向けて送風器４により風が送出される。
油水分離材１に風圧が加わると、油水分離材１に吸着さ
れていた油分Ｏは分離して油溜３内に落下し、油水分離
材１が再生される。したがって、再び油水分離材１とし
て使用可能となる。(D) Separation Step A blower 4 blows air from above the oil / water separator 1 located above the oil reservoir 3 toward the oil / water separator 1.
When wind pressure is applied to the oil / water separator 1, the oil component O adsorbed on the oil / water separator 1 separates and falls into the oil reservoir 3, and the oil / water separator 1 is regenerated. Therefore, it can be used again as the oil-water separator 1.
【００２１】油水分離材１から油分Ｏを除去するには、
油水分離材１に振動を加えたり、遠心力等の物理的な力
を加えることによっても可能である。また、後述の目開
きが大きいほど、さらに厚さが薄いほど油分Ｏの除去が
容易になる性質がある。To remove the oil component O from the oil-water separator 1,
It is also possible to apply vibration to the oil-water separation material 1 or to apply physical force such as centrifugal force. Also, there is a property that the oil component O is easily removed as the opening to be described later is large and the thickness is further thinner.
【００２２】図３は、容器（タンク）２に水２０００ｇ
及び食用油２００ｇを入れて混合撹拌して合成廃水を作
り、この廃水中から本発明に係る油水分離材１を用いて
上記図２の工程に沿って油水分離したときの実験データ
を示すグラフである。FIG. 3 shows that the container (tank) 2 contains 2000 g of water.
And 200 g of edible oil, and mixed and stirred to produce synthetic wastewater. From this wastewater, oil-water separation was performed using the oil-water separator 1 according to the present invention in accordance with the process of FIG. is there.
【００２３】ここで用いた油水分離材１は、テフロン加
工されたもので、その厚さ及び多孔質の目開きは、厚さ
１０ｍｍで８セル数（孔数／インチ）（＃０８）、厚さ
１０ｍｍで１３セル数（孔数／インチ）（＃１３）、及
び厚さ２５ｍｍで１３セル数（孔数／インチ）（＃１
３）の３種類を使用している。また、これら油水分離材
１の外径は１００ｍｍであり、タンク２の開口内径は１
２０ｍｍである。The oil-water separation material 1 used here is Teflon-processed, and its thickness and porous openings are 8 mm in number of cells (number of holes / inch) (# 08) with a thickness of 10 mm. 13 cells (holes / inch) at a thickness of 10 mm (# 13) and 13 cells (holes / inch) at a thickness of 25 mm (# 1)
3) is used. The outer diameter of the oil / water separator 1 is 100 mm, and the inner diameter of the opening of the tank 2 is 1 mm.
20 mm.
【００２４】この実験の結果、厚さが厚く、かつ目開き
が小さいほど少ない回数で油分を分離できることが分か
る。また、いずれの種類の油水分離材１でも、総重量が
約２０００ｇになる分離回数（図２の一連の工程を１回
としている）になると、目視上、油分はほとんど確認で
きず、下水に十分放流することができるまで除去するこ
とができる。As a result of this experiment, it is understood that the oil can be separated by a smaller number of times as the thickness is larger and the openings are smaller. In any type of oil-water separation material 1, when the number of separations reaches a total weight of about 2000 g (a series of steps in FIG. 2 is assumed to be one), almost no oil can be visually observed, and sufficient sewage It can be removed until it can be released.
【００２５】なお、図３には示されていないが、テフロ
ン加工しない油水分離材１の場合は、テフロン加工した
ときよりも回数が多少多くなるが十分に油水分離を行う
ことが可能である。Although not shown in FIG. 3, in the case of the oil / water separator 1 not subjected to Teflon processing, the number of times is slightly larger than that in the case of Teflon processing, but it is possible to sufficiently perform oil / water separation.
【００２６】また、このテフロン等の親油性材で油水分
離材１がコーティングされていると、油水分離材１が腐
蝕しやすい金属から構成されていても、腐蝕を効果的に
防止することができる。When the oil-water separator 1 is coated with a lipophilic material such as Teflon, corrosion can be effectively prevented even if the oil-water separator 1 is made of a metal which is easily corroded. .
【００２７】本発明に係る油水分離材１を用いて、例え
ば、厨房から排出される廃水を油水分離するには、油水
分離材１に取手を付けて、図２に示される要領で手作業
で行うこともできるが、図４に示されるように、自動的
に行うようにしてもよい。For example, in order to separate wastewater discharged from a kitchen with oil-water using the oil-water separation material 1 according to the present invention, a handle is attached to the oil-water separation material 1 and manually operated in the manner shown in FIG. This can be performed, but may be performed automatically as shown in FIG.
【００２８】図４に示される油水分離装置は、上記図２
に示される油水分離材１の動作を油圧あるいはエアシリ
ンダからなる伸縮機構１０と回転機構２０とで行わせた
もので、図中、〜の矢印は、その矢印方向への動作
と動作順序を表している。The oil-water separation device shown in FIG.
The operation of the oil-water separation material 1 shown in FIG. 1 is performed by a telescopic mechanism 10 and a rotation mechanism 20 composed of a hydraulic or air cylinder. ing.
【００２９】図５に示される油水分離装置は、油水分離
材１′を図示しないモータにより回転可能な回転円板型
とし、タンク２に一部を浸漬させて、回転するときは遅
いスピードで、つまり、油水分離材１′中に吸着された
油分Ｏが遠心力で飛散しない範囲のスピードで回転され
る。In the oil / water separator shown in FIG. 5, the oil / water separator 1 'is a rotating disk type rotatable by a motor (not shown). That is, the oil component O adsorbed in the oil-water separator 1 'is rotated at a speed within a range in which the oil component O is not scattered by centrifugal force.
【００３０】油水分離材１′が油溜３上で回転するとき
は、油水分離材１′中に吸着されている油分が遠心力で
飛散されるスピードで回転される。なお、この場合、油
水分離材１′の周囲はカバー３′で覆われる。When the oil / water separator 1 'rotates on the oil reservoir 3, the oil adsorbed in the oil / water separator 1' is rotated at a speed at which the oil is scattered by centrifugal force. In this case, the periphery of the oil-water separator 1 'is covered with a cover 3'.
【００３１】[0031]
【発明の効果】本発明に係る油水分離材は、金属粉末を
焼結処理して得られれた多孔質材からなるので、油分を
効果的に吸着して水から分離することができ、また、吸
着した油分を除去して再使用することができるので安価
な油水分離材とすることができる。また、前記多孔質材
を親油性剤でコーティングしたときは、より油分の吸着
を高めることができる。The oil-water separation material according to the present invention is made of a porous material obtained by sintering a metal powder, so that it can effectively adsorb oil and separate it from water. Since the adsorbed oil can be removed and reused, an inexpensive oil / water separator can be obtained. Further, when the porous material is coated with a lipophilic agent, the adsorption of oil can be further enhanced.
【００３２】本発明に係る油水分離方法は、油水混合液
中に金属粉末を焼結処理して得られた多孔質材からなる
油水分離材を通過させて、その油水分離材に油分を吸着
させる吸着工程と、前記油分を吸着している油水分離材
に風圧あるいは振動等の物理的な力を加えて、その油水
分離材から油分を分離する分離工程とからなるので、油
分を効果的に吸着して水から分離することができ、ま
た、吸着した油分を除去して再使用することができるの
で、安価な油水分離材とすることができる。In the oil / water separation method according to the present invention, an oil / water separation material composed of a porous material obtained by sintering a metal powder into an oil / water mixture is passed through, and the oil / water separation material is adsorbed on the oil / water separation material. Since the method includes an adsorption step and a separation step of applying a physical force such as wind pressure or vibration to the oil-water separator adsorbing the oil to separate the oil from the oil-water separator, the oil is effectively adsorbed. The oil can be separated from water, and the adsorbed oil can be removed and reused, so that an inexpensive oil-water separator can be obtained.
【図１】本発明の一実施の形態に係る油水分離材の斜視
図である。FIG. 1 is a perspective view of an oil-water separator according to one embodiment of the present invention.
【図２】油水分離工程図である。FIG. 2 is an oil-water separation process diagram.
【図３】油水分離の実験結果を示すグラフである。FIG. 3 is a graph showing experimental results of oil-water separation.
【図４】本発明に係る油水分離材を用いた油水分離装置
の動作を示す説明図である。FIG. 4 is an explanatory view showing the operation of the oil / water separator using the oil / water separator according to the present invention.
【図５】本発明に係る油水分離材を用いた他の油水分離
装置の動作を示す説明図である。FIG. 5 is an explanatory view showing the operation of another oil / water separation device using the oil / water separation material according to the present invention.
【符号の説明】 １，１′ 油水分離材 ２ タンク ３ 油溜 ３′ カバー ４ 送風器 １０ 伸縮機構 ２０ 回転機構 Ｏ 油分 Ｗ 水分[Description of Signs] 1, 1 'oil-water separator 2 tank 3 oil reservoir 3' cover 4 blower 10 expansion mechanism 20 rotation mechanism O oil content W moisture
Claims (3)
質材からなることを特徴とする油水分離材。1. An oil-water separation material comprising a porous material obtained by sintering a metal powder.
ていることを特徴とする請求項１記載の油水分離材。2. The oil-water separation material according to claim 1, wherein the porous material is coated with a lipophilic agent.
得られた多孔質材からなる油水分離材を通過させて、そ
の油水分離材に油分を吸着させる吸着工程と、 前記油分を吸着している油水分離材に風圧あるいは振動
等の物理的な力を加えて、その油水分離材から油分を分
離する分離工程と、 からなることを特徴とする油水分離方法。3. An adsorbing step of passing an oil / water separator made of a porous material obtained by sintering a metal powder into an oil / water mixture to adsorb an oil component to the oil / water separator, A separation step of applying a physical force such as wind pressure or vibration to the adsorbed oil / water separation material to separate oil from the oil / water separation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4777397A JPH10244254A (en) | 1997-03-03 | 1997-03-03 | Oil-water separating material and oil-water separating method using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4777397A JPH10244254A (en) | 1997-03-03 | 1997-03-03 | Oil-water separating material and oil-water separating method using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10244254A true JPH10244254A (en) | 1998-09-14 |
Family
ID=12784711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4777397A Withdrawn JPH10244254A (en) | 1997-03-03 | 1997-03-03 | Oil-water separating material and oil-water separating method using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10244254A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642968A (en) * | 2012-04-26 | 2012-08-22 | 卢瑞琳 | Oil-water-solid separation device for kitchen wastes |
| ITMI20122254A1 (en) * | 2012-12-28 | 2014-06-29 | Eni Spa | PROCESS FOR REMOVING HYDROCARBONS FROM A WATER BODY THROUGH SELECTIVE PERMEATION, AND ITS APPARATUS |
| WO2016067178A1 (en) * | 2014-10-27 | 2016-05-06 | Eni S.P.A. | Process for removing hydrocarbons from a water body by means of selective permeation, and relative apparatus |
-
1997
- 1997-03-03 JP JP4777397A patent/JPH10244254A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642968A (en) * | 2012-04-26 | 2012-08-22 | 卢瑞琳 | Oil-water-solid separation device for kitchen wastes |
| ITMI20122254A1 (en) * | 2012-12-28 | 2014-06-29 | Eni Spa | PROCESS FOR REMOVING HYDROCARBONS FROM A WATER BODY THROUGH SELECTIVE PERMEATION, AND ITS APPARATUS |
| WO2014102736A1 (en) * | 2012-12-28 | 2014-07-03 | Eni S.P.A. | Process for removing hydrocarbons from a body of water by means of selective permeation, and relative apparatus |
| US20150321925A1 (en) * | 2012-12-28 | 2015-11-12 | Eni S.P.A. | Process for removing hydrocarbons from a body of water by means of selective permeation, and relative apparatus |
| WO2016067178A1 (en) * | 2014-10-27 | 2016-05-06 | Eni S.P.A. | Process for removing hydrocarbons from a water body by means of selective permeation, and relative apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A761 | Written withdrawal of application |
Free format text: JAPANESE INTERMEDIATE CODE: A761 Effective date: 20041213 |