JPH0731129U - Oil water separator - Google Patents
Oil water separatorInfo
- Publication number
- JPH0731129U JPH0731129U JP6367893U JP6367893U JPH0731129U JP H0731129 U JPH0731129 U JP H0731129U JP 6367893 U JP6367893 U JP 6367893U JP 6367893 U JP6367893 U JP 6367893U JP H0731129 U JPH0731129 U JP H0731129U
- Authority
- JP
- Japan
- Prior art keywords
- oil
- floating
- liquid
- floating oil
- oil recovery
- 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.)
- Granted
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
(57)【要約】
【目的】洗浄液から効率良く油分回収ができ、廃液を削
減でき、洗浄液を長寿命化する油水分離装置を提供す
る。
【構成】浮上油回収手段である浮上油回収装置３と、ろ
過膜である膜モジュール７と、を有し、この浮上油回収
装置３の下流側に膜モジュール７を配置し、この膜モジ
ュール７を透過しない濃縮液を浮上油回収装置３に戻す
濃縮液戻し流路Ｂを設けた。
(57) [Abstract] [Purpose] To provide an oil / water separator that can efficiently recover oil from a cleaning liquid, reduce waste liquid, and extend the life of the cleaning liquid. [Structure] A floating oil recovery device 3 which is a floating oil recovery means, and a membrane module 7 which is a filtration membrane are provided. A concentrated liquid return flow path B for returning the concentrated liquid that does not permeate to the floating oil recovery device 3 was provided.
Description
【０００１】[0001]
本考案は、例えば、金属機械部品に付着した切削油，プレス油，研削油などを 除去するための洗浄、電子部品に付着した異物，微粒子などの洗浄等を行なう際 使用される洗浄液から油分等を除去し、洗浄液を再生するための油水分離装置に 関する。 The present invention is, for example, a cleaning liquid for removing cutting oil, press oil, grinding oil, etc. adhering to metal machine parts, and cleaning of foreign matters, fine particles, etc. adhering to electronic parts, etc. The present invention relates to an oil / water separation device for removing water and regenerating a cleaning liquid.
【０００２】[0002]
従来、この種の油水分離装置においては、フロン，トリクロロエタンを使用す るものが一般的であった。 Conventionally, in this type of oil / water separator, it has been common to use freon and trichloroethane.
【０００３】 しかし、このフロン、トリクロロエタンの使用が法的に規制を受け、近年、代 替の洗浄方法として水系洗浄が採用される動向にある。However, the use of these fluorocarbons and trichloroethane is legally regulated, and in recent years, an aqueous cleaning method has been adopted as an alternative cleaning method.
【０００４】 これには、水、あるいは洗浄剤（中性系，アルカリ性系）を含んだ水溶液をウ ォータージェットとして部品にぶつけて油分を除去する方法、液中に部品を浸漬 した状態で超音波を発振させる方法等がある。For this, water or an aqueous solution containing a cleaning agent (neutral or alkaline) is used as a water jet to hit parts to remove oil, and ultrasonic waves are applied while the parts are immersed in the liquid. There is a method of oscillating.
【０００５】 上記のいずれの方法にしても、洗浄能力が大きい新しい洗浄液を常に使用する 方が洗浄効果は大きいのだが、新しい洗浄液を補充または交換して使用すること で、多量の廃液を発生させてしまうことになるため、補充または交換の回数をで きる限り少なくするために、洗浄能力の低下を抑え、同じ量の洗浄液で、より多 くの部品を洗浄可能とすることが要求されている。In any of the above methods, it is more effective to always use a new cleaning liquid having a large cleaning ability. However, a large amount of waste liquid is generated by replenishing or replacing the new cleaning liquid. Therefore, in order to reduce the number of times of replenishment or replacement as much as possible, it is required to prevent deterioration of cleaning ability and to clean more parts with the same amount of cleaning liquid. .
【０００６】 この洗浄液の寿命は、洗浄液中に洗浄された部品から脱離した油分濃度が大き くなり、洗浄する部品を逆に汚染してしまうような状態、または洗浄剤（界面活 性剤、アルカリ成分等）が劣化した（油分との化学反応により洗浄剤としての濃 度が低下した）状態となった時であるが、洗浄液中から油分のみを除去すること 、または、洗浄剤を補給することで洗浄液の再生がなされ、長寿命化できること になる。The life of the cleaning solution is such that the concentration of oil desorbed from the cleaned parts in the cleaning solution becomes large and the parts to be cleaned are contaminated, or the cleaning agent (surfactant, surfactant, This is the time when the alkaline component, etc.) has deteriorated (the concentration as a cleaning agent has decreased due to a chemical reaction with oil), but only the oil is removed from the cleaning liquid or the cleaning agent is replenished. As a result, the cleaning solution is regenerated and the service life can be extended.
【０００７】 以下、（１），（２）に、洗浄液中から油分のみを除去する油水分離装置の従 来例を示し説明する。Hereinafter, (1) and (2) will be described with reference to a conventional example of an oil / water separator for removing only oil from the cleaning liquid.
【０００８】 （１）洗浄液中に分散している不安定な油分が凝集し、比重差により浮上する という特性を利用するものがあった。(1) Some have utilized the characteristic that unstable oil components dispersed in the cleaning liquid aggregate and float due to the difference in specific gravity.
【０００９】 このタイプの油水分離装置は、加圧浮上式油水分離タイプ、コアレッサーフィ ルタータイプ（極細繊維構造体に液を透過させることによって油滴径を大きくし 、比重差分離を促進させるもの）、種々の粗粒化エレメントに使用したタイプ（ コアレッサーフィルタータイプと同原理）、電位差分離・荷電凝集分離タイプ（ 液中に分散している微粒子、液滴に電荷を与え凝集させたうえで、ろ過、あるい は比重分離させるもの）等がある。This type of oil-water separator includes a pressure-floating oil-water separator type and a coalescer filter type (a device that increases the oil droplet size by allowing liquid to permeate through an ultrafine fiber structure and promotes specific gravity difference separation). ), Types used for various coarsening elements (same principle as coalescer filter type), potentiometric separation / charge aggregation separation type (fine particles dispersed in liquid, droplets are charged and then aggregated) , Filtration, or those that separate the specific gravity).
【００１０】 （２）小さな孔径を有する膜（精密ろ過膜、限外ろ過膜等）によりろ過する膜 式油水分離法（以下、膜法）によるものがあった。(2) There has been a membrane type oil-water separation method (hereinafter referred to as a membrane method) in which a membrane having a small pore size (microfiltration membrane, ultrafiltration membrane, etc.) is used for filtration.
【００１１】 この方法で通常用いられる膜材質としては、ポリスルホン等の高分子系材質や セラミック系材質等である。The membrane material usually used in this method is a polymer material such as polysulfone or a ceramic material.
【００１２】[0012]
しかしながら、上述した従来の油水分離装置においては、それぞれ以下のよう な問題がある。 However, the above-mentioned conventional oil-water separators have the following problems, respectively.
【００１３】 （１）の油水分離装置では、超音波洗浄などにより、油分が高度に分散された 洗浄液から油分を分離する際、その油滴径は０．１〜１μｍ程度と非常に小さく 、安定なエマルジョンを形成しており、静置しておいた場合には数週間〜数か月 経たないと油分が浮上されないような状態となっている。In the oil-water separator of (1), when the oil is separated from the cleaning liquid in which the oil is highly dispersed by ultrasonic cleaning or the like, the oil droplet size is as small as about 0.1 to 1 μm and stable. When it is left to stand, the oil will not rise until it has been formed for several weeks to several months.
【００１４】 このようなエマルジョン状態の洗浄液の場合、数か月、あるいはそれ以上待つ しかなく、（１）の方式の油水分離装置の適用は不可能であり、エマルジョン状 態の洗浄液を廃液として処理しなければならない。In the case of such an emulsion-state cleaning liquid, it is necessary to wait for several months or longer, and it is impossible to apply the oil-water separation device of the method (1), and the emulsion-state cleaning liquid is treated as waste liquid. Must.
【００１５】 （２）に示した膜法の欠点としては、膜材質に拘らず、安定なエマルジョンを 形成していない、いわゆる浮上油が膜面に接触すると油膜が形成され透過流束が 著しく低下し、ろ過効率を下げてしまうということがある。この時、膜材質がセ ラミック系材質の場合には、逆洗浄等により洗浄が可能であるが、高分子系材質 の場合には、いったん吸着した油分は薬品洗浄（アルカリ性洗浄剤等）に頼らざ るを得ない。どちらにしてもメンテナンスが困難であり、費用がかかる。The disadvantage of the membrane method shown in (2) is that regardless of the membrane material, a stable emulsion is not formed. When so-called floating oil comes into contact with the membrane surface, an oil film is formed and the permeation flux is significantly reduced. However, it may reduce the filtration efficiency. At this time, if the membrane material is a ceramic material, it can be cleaned by backwashing, but if it is a polymer material, the oil once adsorbed depends on chemical cleaning (such as an alkaline cleaning agent). I have no choice. Either way, maintenance is difficult and expensive.
【００１６】 本考案は、上記従来技術の問題を解決するためになされたもので、その目的と するところは、洗浄液から効率良く油分回収ができ、廃液を削減でき、洗浄液を 長寿命化する油水分離装置を提供することにある。The present invention has been made to solve the above-mentioned problems of the prior art. The purpose of the present invention is to efficiently recover oil from the cleaning liquid, reduce waste liquid, and extend the life of the cleaning liquid. To provide a separating device.
【００１７】[0017]
上記目的を達成するために本考案にあっては、原液タンクの油分を分離するろ 過膜を有する油水分離装置において、前記ろ過膜の上流側に浮上油回収手段を設 けたことを特徴とする。 In order to achieve the above object, the present invention is characterized in that, in an oil / water separator having a filtration membrane for separating oil in a stock solution tank, a floating oil recovery means is provided upstream of the filtration membrane. .
【００１８】 また、前記ろ過膜を透過しない濃縮液を前記浮上油回収手段に戻す濃縮液戻し 流路を設けるとよい。Further, it is preferable to provide a concentrated liquid return channel for returning the concentrated liquid that does not pass through the filtration membrane to the floating oil recovery means.
【００１９】[0019]
上記のように構成された油水分離装置では、ろ過膜の上流側に浮上油回収手段 を設けたので、ろ過膜の透過流束を低下させる径を有する油分は浮上油回収手段 に回収され、ろ過膜に付着しない。 In the oil-water separator configured as described above, since the floating oil recovery means is provided on the upstream side of the filtration membrane, the oil component having a diameter that reduces the permeation flux of the filtration membrane is recovered by the floating oil recovery means and filtered. Does not adhere to the membrane.
【００２０】 また、ろ過膜を透過しない濃縮液を浮上油回収手段に戻す濃縮液戻し流路を設 けることで、濃縮液が再び浮上油回収手段に送られ浮上油回収手段内の油分濃度 が高くなり、油滴どうしが衝突しやすく、合一化することで油滴径が大きくなり 、浮上油になりやすい。Further, by providing a concentrated liquid return flow path for returning the concentrated liquid that does not pass through the filtration membrane to the floating oil recovery means, the concentrated liquid is sent to the floating oil recovery means again and the oil concentration in the floating oil recovery means is increased. It becomes higher, and the oil droplets are more likely to collide with each other, and coalescing increases the diameter of the oil droplets, making it easier to become floating oil.
【００２１】[0021]
まず、洗浄液中に存在する油分の状態を下記の〜のように油滴径別に分類 する。 First, the states of the oil components present in the cleaning liquid are classified according to the oil droplet sizes as shown in the following items.
【００２２】 浮上油（１００μｍ以上）： 最初から液面に浮く程度の油分。Floating oil (100 μm or more): Oil that floats on the liquid surface from the beginning.
【００２３】 分散油（１０〜１００μｍ）： 攪拌等によって一時的に油滴状となったが 、数分〜数時間の静置の間に浮上油になる油分。Dispersed oil (10 to 100 μm): An oil component that temporarily becomes oil drops due to stirring or the like, but becomes floating oil after standing for several minutes to several hours.
【００２４】 微細分散油（１〜１０μｍ）： 激しい攪拌や超音波分散等によって、非常 に微細な油滴を形成しており、数時間〜数日間程度の静置で分散油，浮上油と移 行していく油分。Finely dispersed oil (1 to 10 μm): Very fine oil droplets are formed by vigorous stirring, ultrasonic dispersion, etc., and transferred to dispersed oil and floating oil by standing for several hours to several days. Oil to go.
【００２５】 エマルジョン（１μｍ以下）：強力な超音波分散、高圧ウォータージェット 等により極めて微細な油滴を形成して安定化しており、数週間〜数か月、または それ以上静置しても浮上油とはなりにくい油分。Emulsion (1 μm or less): Extremely fine oil droplets are formed and stabilized by powerful ultrasonic dispersion, high-pressure water jet, etc., and float even after standing for several weeks to several months or more. Oil that does not easily become oil.
【００２６】 上記〜に示した油分は、水より比重が小さいため、一般に液中では上昇し 浮上油となろうとするが、微細な油滴になるほど液の流動，対流等の影響を受け やすくなり、浮上油となるまでに時間を要するようになる。Since the oil contents shown in the above 1 to 3 have a smaller specific gravity than water, they generally rise in the liquid and tend to become floating oil, but the finer oil droplets are, the more easily they are affected by the flow and convection of the liquid. , It will take some time before it becomes floating oil.
【００２７】 また、油分濃度が大きい場合は油滴どうしが衝突しやすく、合一化することで 油滴径が大きくなり、浮上油となるまでの時間が短くなる傾向がある。Further, when the oil content is high, the oil droplets are likely to collide with each other, and when they are coalesced, the diameter of the oil droplets is increased, and the time until the oil becomes floating oil tends to be shortened.
【００２８】 ここで、本考案を図示の実施例に基づいて説明する。The present invention will now be described based on the illustrated embodiment.
【００２９】 （第１実施例） 図１は本考案に係る第１実施例である油水分離装置Ａを示す概略図である。(First Embodiment) FIG. 1 is a schematic view showing an oil-water separator A according to a first embodiment of the present invention.
【００３０】 図１は加圧浮上式，油滴粗粒化エレメント使用タイプ，電位差分離タイプ等、 浮上油あるいは浮上油となりやすい油分を回収する浮上油回収手段としての浮上 油回収装置と、膜式油水分離装置と、を複合させた油水分離装置である。FIG. 1 shows a floating type oil collecting device such as a pressure floating type, an oil droplet coarsening element type, a potential difference separation type, and the like. The oil-water separator is a combined oil-water separator.
【００３１】 図１において、原液タンク１からポンプ２にて浮上油回収手段である浮上油回 収装置３に送られ、まず、上述の浮上油，分散油，微細分散油までの大き さの油分が回収される。この浮上油回収装置３は、特殊なエレメントにより油滴 径を増大させることによって、微細分散油までを浮上油に粗粒化し、比重差 分離するものである。In FIG. 1, a pump 2 feeds a stock oil from a stock solution tank 1 to a floating oil collecting device 3 which is a floating oil recovery means, and first, the above-mentioned floating oil, dispersed oil, and fine dispersed oil. Is recovered. The floating oil recovery device 3 increases the oil droplet diameter by a special element to coarsen even finely dispersed oil into floating oil, and separates the difference in specific gravity.
【００３２】 この特殊なエレメントは、親油性と撥油性の繊維を交互に編み込んだものを円 筒形状にし、この中に洗浄液が入り込むと次第に粗粒化し、最終的に浮上油に なり回収されるもので、さらに洗浄液の流入，排出方向を自動的に切り替えるメ カニズムをもっており、エレメントの目詰まりを防止する機能を備えているもの である。This special element is formed by alternately weaving oleophilic and oil-repellent fibers into a cylindrical shape, and when the cleaning liquid enters into this, it gradually becomes coarse particles and finally becomes floating oil and is collected. In addition, it has a mechanism that automatically switches the inflow and outflow directions of the cleaning liquid, and has a function to prevent element clogging.
【００３３】 次に逆止弁４，ポンプ６保護用のストレーナ５およびポンプ６を経て、ろ過膜 である膜モジュール７に送られ、ろ過することで、浮上油回収装置３で回収でき なかった極めて微細な油滴（エマルジョンとなった油分）が除去され、ほとん どの油分が効率良く除去されることになる。ここでは、浮上油等が膜モジュー ル７に付着して、油膜を形成し透過流束を低下させるようなことはなくなる。Next, after passing through the check valve 4, the strainer 5 for protecting the pump 6 and the pump 6, it is sent to the membrane module 7, which is a filtration membrane, and filtered, so that the floating oil recovery device 3 was unable to recover it. Fine oil droplets (oil components that became emulsion) are removed, and most oil components are efficiently removed. Here, floating oil or the like does not adhere to the membrane module 7 to form an oil film and reduce the permeation flux.
【００３４】 そして、膜モジュール７を透過した洗浄液は透過液流量調整弁８および逆止弁 ９を経て原液タンク１に戻される。ここでは、膜モジュール７を透過した直後の 透過洗浄液をサンプリングできるように弁１４が設けられている。Then, the cleaning liquid that has permeated the membrane module 7 is returned to the stock solution tank 1 via the permeated liquid flow rate adjusting valve 8 and the check valve 9. Here, the valve 14 is provided so that the permeation cleaning liquid immediately after permeating the membrane module 7 can be sampled.
【００３５】 また、膜モジュール７を透過しなかったいわゆる濃縮液は、濃縮液戻し流路Ｂ にて浮上油回収装置３の上流側の流路に戻されるが、その経路は、膜モジュール ７から流量および圧力を調整する絞り弁１０を介して再び膜モジュール７の上流 側の流路に戻され、膜モジュール７に至る前に分岐して濃縮液流量調整器１１お よび逆止弁１２を経て浮上油回収装置３の上流側の流路に戻るものである。一方 、分岐しないでそのまま、再び膜モジュール７に送られる液もある。The so-called concentrated liquid that has not permeated the membrane module 7 is returned to the upstream flow passage of the floating oil recovery device 3 in the concentrated liquid return flow passage B 1, and the route is from the membrane module 7. It is returned to the upstream channel of the membrane module 7 via the throttle valve 10 for adjusting the flow rate and the pressure, branched before reaching the membrane module 7, and passed through the concentrate flow rate regulator 11 and the check valve 12. It returns to the flow path on the upstream side of the floating oil recovery device 3. On the other hand, there is a liquid that is sent to the membrane module 7 again without branching.
【００３６】 また、浮上油回収装置３から送られる液は逆止弁４の上流側にて分岐し、弁１ ３を経て原液タンク１に戻されるものもある。In some cases, the liquid sent from the floating oil recovery device 3 branches on the upstream side of the check valve 4 and is returned to the stock solution tank 1 via the valve 13.
【００３７】 ここで、循環系配管内の濃縮倍率について説明すると、透過液流量と濃縮液戻 り流量とのバランスで設定され、例えば、透過液流量９ｌに対し濃縮液戻り流量 １ｌとし、濃縮前，濃縮後の持込み油分濃度をそれぞれａ，ｂとすると、 a(mg/l) ×(9+1)(l/min)=0(mg/l)×9(l/min)+b(mg/l)×1(l/min) となり、 濃縮倍率＝ｂ／ａ＝１０ となる。Here, the concentration ratio in the circulation system pipe will be described by setting the balance between the permeate flow rate and the concentrate return flow rate. , And the concentration of oil carried in after concentration is a and b, respectively, a (mg / l) × (9 + 1) (l / min) = 0 (mg / l) × 9 (l / min) + b (mg / l) × 1 (l / min), and the concentration ratio = b / a = 10.
【００３８】 これらは、濃縮液流量調整器１１、および絞り弁１０等にて調節される。These are adjusted by the concentrated liquid flow rate controller 11, the throttle valve 10 and the like.
【００３９】 浮上油回収装置３の上流側に戻る濃縮液中には油滴成分が高密度で存在するた め、前述したとおり油滴どうしが衝突しやすく、合一化することで油滴径が大き くなり、膜モジュール７で濃縮される前と比較して浮上油となりやすい状態にな っており、浮上油回収装置３にて油分が除去され易くなる。Since the oil droplet components are present at a high density in the concentrated liquid returning to the upstream side of the floating oil recovery device 3, the oil droplets are likely to collide with each other as described above, and the oil droplet diameter can be increased by coalescing. Becomes larger, and it is more likely to be floating oil than before being concentrated in the membrane module 7, and the oil content is easily removed by the floating oil recovery device 3.
【００４０】 従って、本システムによれば、廃液の発生や廃液のドレイン操作を伴わないメ ンテナンスフリー化が可能である。ただし、極少量だが、どうしても浮上油回収 装置３で処理できない成分が蓄積するため、ある程度の頻度で濃縮液のドレイン が必要である。この廃液発生は、従来の方法における廃液発生量に比べて著しく 減量されているものである。Therefore, according to the present system, it is possible to achieve maintenance-free operation without generating waste liquid or draining waste liquid. However, it is necessary to drain the concentrated liquid at a certain frequency because a small amount of components that cannot be processed by the floating oil recovery device 3 will accumulate. The amount of waste liquid generated is significantly reduced compared to the amount of waste liquid generated by the conventional method.
【００４１】 （第２実施例） 図２は本考案に係る第２実施例である油水分離装置Ａ’を示す概略図である。Second Embodiment FIG. 2 is a schematic view showing an oil / water separator A ′ according to a second embodiment of the present invention.
【００４２】 図２において、油水分離装置Ａ’はクロスフローろ過方式のシステムで、原液 タンク１０１から洗浄液は、フィードポンプ１０３保護用のストレーナ１０２お よびフィードポンプ１０３（３ｌ／ｍｉｎ×５ｍ）を経て浮上油回収手段である 浮上油回収装置１０４に送られる。In FIG. 2, the oil-water separator A ′ is a cross-flow filtration system, and the cleaning liquid from the stock solution tank 101 passes through a strainer 102 for protecting the feed pump 103 and a feed pump 103 (3 l / min × 5 m). It is sent to the floating oil recovery device 104 which is a floating oil recovery means.
【００４３】 この浮上油回収装置１０４は、浮上油回収装置１０４の底部から洗浄液が送ら れる構造であるため、弁１１２から浮上油が除去しやすくなっている。この洗浄 液が、フィルター１０５および循環ポンプ１０６（３０ｌ／ｍｉｎ×３０ｍ）を 経て膜モジュール１０７（膜面積２ｍ2 ，１．５ｌ／ｍｉｎ）へ送られる。この 時、膜モジュール１０７の直前にて、流量および圧力調節のために再び浮上油回 収装置１０４へ戻す絞り弁１１１が設けられている。Since the floating oil recovery device 104 has a structure in which the cleaning liquid is sent from the bottom of the floating oil recovery device 104, the floating oil can be easily removed from the valve 112. This cleaning liquid is sent to the membrane module 107 (membrane area 2 m 2 , 1.5 l / min) via the filter 105 and the circulation pump 106 (30 l / min × 30 m). At this time, immediately before the membrane module 107, there is provided a throttle valve 111 for returning to the floating oil collecting device 104 again for adjusting the flow rate and the pressure.
【００４４】 ここで、浮上油回収装置１０４と膜モジュール１０７の油分回収について説明 すと、前述の第１実施例では、浮上油回収装置３にて微細分散油より大きい径 の油分を除去し、膜モジュール７にてエマルジョンとなった油分を除去してい るが、第２実施例では、その用途に応じて、浮上油回収装置１０４のエレメント 等、および膜モジュール１０７のろ過膜等を交換し、除去する油分を変えること もできる（勿論、第１実施例も可能）。だだし、膜モジュール１０７のろ過膜に おける透過流束の低下を抑えらえる程度に、浮上油回収装置１０４にて透過流束 を低下させる恐れのある油分は回収する必要がある。Here, the oil recovery of the floating oil recovery device 104 and the membrane module 107 will be described. In the first embodiment described above, the floating oil recovery device 3 removes the oil having a diameter larger than that of the finely dispersed oil, Although the oil that has become an emulsion is removed by the membrane module 7, in the second embodiment, the elements and the like of the floating oil recovery device 104 and the filtration membrane and the like of the membrane module 107 are replaced according to the application, It is also possible to change the oil content to be removed (of course, the first embodiment is also possible). However, it is necessary to recover the oil component that may reduce the permeation flux in the floating oil recovery device 104 to the extent that the permeation flux in the filtration membrane of the membrane module 107 can be suppressed.
【００４５】 次に、膜モジュール１０７を透過した透過液は、弁１０８を経て原液タンク１ ０１へ戻され、または、弁１０９を経て浮上油回収装置１０４へ戻される。Next, the permeated liquid that has permeated the membrane module 107 is returned to the stock solution tank 101 via the valve 108, or is returned to the floating oil recovery device 104 via the valve 109.
【００４６】 膜モジュール１０７を透過しない濃縮液は、濃縮液戻し流路Ｂ’にある絞り弁 １１０を介して浮上油回収装置１０４へ戻される。この絞り弁１１０も流量およ び圧力調節のために設けられている。The concentrated liquid that does not pass through the membrane module 107 is returned to the floating oil recovery device 104 via the throttle valve 110 in the concentrated liquid return flow path B ′. This throttle valve 110 is also provided for adjusting the flow rate and pressure.
【００４７】 この実施例では、浮上油回収装置１０４内の濃縮液濃度が所定の値に達した時 点で濃縮液を排出する弁１１３が設けられており、第１実施例ほどではないが、 廃液発生量は従来と比較して著しく少ないものである。In this embodiment, a valve 113 for discharging the concentrated liquid when the concentrated liquid concentration in the floating oil recovery device 104 reaches a predetermined value is provided, which is not the same as in the first embodiment. The amount of waste liquid generated is significantly smaller than in the past.
【００４８】[0048]
本考案は以上の構成および作用を有するもので、ろ過膜の上流側に浮上油回収 手段を設けたので、ろ過膜の透過流束を低下させる径を有する油分は浮上油回収 手段に回収され、ろ過膜に付着しないため、ろ過膜の透過流束を低下せず、洗浄 液から効率良く油分回収ができる。 The present invention has the above-described configuration and operation, and since the floating oil recovery means is provided on the upstream side of the filtration membrane, the oil component having a diameter that reduces the permeation flux of the filtration membrane is recovered by the floating oil recovery means, Since it does not adhere to the filtration membrane, the permeation flux of the filtration membrane is not reduced, and oil can be efficiently recovered from the washing liquid.
【００４９】 また、ろ過膜を透過しない液を浮上油回収手段に戻すことで、浮上油回収手段 内の油分濃度が高くなり、油滴どうしが衝突しやすく、合一化することで油滴径 が大きくなり、浮上油になりやすく、さらに洗浄液から効率良く油分回収ができ ると共に、廃液を著しく削減できる。Further, by returning the liquid that does not pass through the filtration membrane to the floating oil recovery means, the concentration of oil in the floating oil recovery means becomes high, and the oil droplets easily collide with each other. The amount of oil becomes large, and it easily becomes floating oil. Furthermore, oil can be efficiently recovered from the cleaning liquid, and waste liquid can be significantly reduced.
【００５０】 従って、洗浄液の寿命が長くでき、同量の洗浄液でより多くの部品を洗浄可能 とする油水分離装置を提供できる。Therefore, the life of the cleaning liquid can be extended, and an oil-water separator that can clean more parts with the same amount of cleaning liquid can be provided.
【００５１】 また、簡単な構成であるため、装置のコストがかからず、ランニングコストも 廃液処理費，メンテナンス費等の削減により低減される。Further, since the structure is simple, the cost of the device is not required, and the running cost is also reduced by reducing the waste liquid treatment cost, the maintenance cost and the like.
【図１】図１は本考案の第１実施例である油水分離装置
を示す概略図である。FIG. 1 is a schematic view showing an oil / water separator according to a first embodiment of the present invention.
【図２】図２は本考案の第２実施例である油水分離装置
を示す概略図である。FIG. 2 is a schematic view showing an oil / water separator according to a second embodiment of the present invention.
【符号の説明】 Ａ，Ａ’ 油水分離装置 Ｂ，Ｂ’ 濃縮液戻し流路 １，１０１ 原液タンク ２，６ ポンプ ３，１０４ 浮上油回収装置 ４，９，１２ 逆止弁 ５，１０２ ストレーナ ７，１０７ 膜モジュール（ろ過膜） ８ 透過液流量調整弁 １０，１１０，１１１ 絞り弁 １１ 濃縮液流量調整器 １０３ フィードポンプ １０５ フィルター １０６ 循環ポンプ[Explanation of Codes] A, A'oil water separator B, B'concentrated liquid return flow path 1, 101 stock solution tank 2, 6 pump 3, 104 floating oil recovery device 4, 9, 12 check valve 5, 102 strainer 7 , 107 Membrane module (filtration membrane) 8 Permeate flow rate control valve 10, 110, 111 Throttle valve 11 Concentrate flow rate controller 103 Feed pump 105 Filter 106 Circulation pump
Claims (2)
する油水分離装置において、 前記ろ過膜の上流側に浮上油回収手段を設けたことを特
徴とする油水分離装置。1. An oil / water separator having a filtration membrane for separating oil in a stock solution tank, wherein a floating oil recovery means is provided on the upstream side of the filtration membrane.
上油回収手段に戻す濃縮液戻し流路を設けたことを特徴
とする請求項１に記載の油水分離装置。2. The oil-water separation device according to claim 1, further comprising a concentrated liquid return flow path for returning the concentrated liquid that does not pass through the filtration membrane to the floating oil recovery means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993063678U JP2607709Y2 (en) | 1993-11-04 | 1993-11-04 | Oil-water separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993063678U JP2607709Y2 (en) | 1993-11-04 | 1993-11-04 | Oil-water separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0731129U true JPH0731129U (en) | 1995-06-13 |
| JP2607709Y2 JP2607709Y2 (en) | 2002-07-08 |
Family
ID=13236270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993063678U Expired - Lifetime JP2607709Y2 (en) | 1993-11-04 | 1993-11-04 | Oil-water separator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2607709Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013035576A1 (en) * | 2011-09-05 | 2013-03-14 | 住友電工ファインポリマー株式会社 | Oil-containing wastewater treatment system |
| JP2020189262A (en) * | 2019-05-21 | 2020-11-26 | アクア化学株式会社 | Degraded rinse water regenerating device and cleaning apparatus |
-
1993
- 1993-11-04 JP JP1993063678U patent/JP2607709Y2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013035576A1 (en) * | 2011-09-05 | 2013-03-14 | 住友電工ファインポリマー株式会社 | Oil-containing wastewater treatment system |
| JP2013052364A (en) * | 2011-09-05 | 2013-03-21 | Sumitomo Electric Fine Polymer Inc | Oil-containing wastewater treatment system |
| CN103298750A (en) * | 2011-09-05 | 2013-09-11 | 住友电工超效能高分子股份有限公司 | Oil-containing wastewater treatment system |
| JP2020189262A (en) * | 2019-05-21 | 2020-11-26 | アクア化学株式会社 | Degraded rinse water regenerating device and cleaning apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2607709Y2 (en) | 2002-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102439657B1 (en) | A scrubber drainage purifying device and method, and a salinity difference power generation system | |
| KR100316625B1 (en) | Method and apparatus for purifying bilge water contaminated and emulsified with oil in ship | |
| JP2591495B2 (en) | Ultrafine filtration system and ultrafine filtration method using the system | |
| JP2607709Y2 (en) | Oil-water separator | |
| JP3359463B2 (en) | Oil-water separator | |
| JP3359448B2 (en) | Oil-water separator | |
| JP3383453B2 (en) | Oil-water separator | |
| WO1994015702A1 (en) | Method and device for separating oil/water mixtures | |
| JP3440684B2 (en) | Filtration device and method for cleaning filtration device | |
| JP3453695B2 (en) | Oil-water separator | |
| JPH11138163A (en) | Treatment of water in oil emulsion and device for treating water in oil emulsion | |
| JP4750344B2 (en) | Oil-water separator for treated water containing emulsified oil | |
| JP3359442B2 (en) | Oil-water separator | |
| DE2941164A1 (en) | Cleaning membrane filter systems - using periodic injection of air on high pressure side with subsequent froth separator | |
| JP3359485B2 (en) | Filtration device | |
| JP3539147B2 (en) | Filtration device | |
| JP4089229B2 (en) | Oil / water separator | |
| JPH0356773B2 (en) | ||
| KR100590715B1 (en) | Filtering system for clean pickling solution | |
| JP2002361248A (en) | Waste water treatment apparatus for vehicle washer | |
| JP2001129303A (en) | Oil-containing liquid treatment apparatus | |
| JPH08309351A (en) | Waste water treatment apparatus | |
| JP2021164909A (en) | Oil removal apparatus and waste water reuse system | |
| JPH08299716A (en) | Washing system | |
| JPH09220450A (en) | Filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20010626 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20011113 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081214 Year of fee payment: 7 |
|
| EXPY | Cancellation because of completion of term |