JP3539680B2 - Filtration method and apparatus for wastewater - Google Patents
Filtration method and apparatus for wastewater Download PDFInfo
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- JP3539680B2 JP3539680B2 JP2000268811A JP2000268811A JP3539680B2 JP 3539680 B2 JP3539680 B2 JP 3539680B2 JP 2000268811 A JP2000268811 A JP 2000268811A JP 2000268811 A JP2000268811 A JP 2000268811A JP 3539680 B2 JP3539680 B2 JP 3539680B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
- B01D37/046—Controlling the filtration by pressure measuring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/12—Drying solid materials or objects by processes not involving the application of heat by suction
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Description
【０００１】
【産業上の利用分野】
本発明は被洗浄物の洗浄に用いる洗浄液、メッキ液、切削若しくは圧延等に用いる処理液、表面処理工程に使用する処理液、その他の汚液中から、汚物を除去する濾過方法及びその装置に係るものである。
【０００２】
【従来の技術】
従来、上述の如き液体の濾過を行うには、図３に示す如く、汚液(１)を収納した汚液収納槽(２)から、ポンプ(３)を利用して濾過装置(４)へ汚液(１)を圧送して汚液(１)を濾過し、この濾過済みの汚液(１)を汚液収納槽(２)に復元することにより汚液(１)を循環させて濾過を行っている。
【０００３】
【発明が解決しようとする課題】
しかしながら、上述の如き従来方法に於ては汚液の移送にポンプを利用するため、ポンプの耐液性、耐薬品性、耐熱性等に因って、使用可能なポンプに制約があり、濾過可能な汚液に制限が生じる場合が多い。
【０００４】
また、ポンプを濾過装置に使用する場合には、汚液に含まれる粒子の大きさ、材質等によりポンプを破損したり、これを圧送する事ができない場合がある。また、ポンプを使用する場合、そのポンプの能力によって流量が決まるため、急速な汚液の移動が制約され、汚液の急速濾過が困難な場合が多い。即ち、ポンプによる場合は急激な汚液の移送は困難なものである。
【０００５】
また、従来の濾過装置では、汚物に付着している液の液切りや、乾燥が困難であり、環境に悪影響を及ぼすような液が多量に付着した状態で汚物が廃棄されているのが現状であり、環境保護上、極めて好ましくないものとなっている。
【０００６】
また、従来のポンプを利用して汚液を濾過する方法では、ポンプを切り粉等の大型の汚物から保護するために、ポンプの注入側にストレーナーを設ける場合が多い。このように、汚液槽内の底に堆積した汚物、例えば比較的大型の切り粉、金属粉等の粒子直径の大きな汚物をポンプの循環経路に導入して濾過し、除去する事はポンプを破損する可能性があり、またストレーナーの目詰まりを生じるために困難なものであった。そのため従来は、汚液中の小さな粒子はポンプの循環経路中でフィルターによる除去を行うが、上記の比較的大きな粒子系の汚物、金属粉、切り粉等は液槽の内部に堆積させたままの状態で、小さな粒子のみを、フィルターによって除去しており、汚液の完全な濾過処理は困難なものとなっていた。
【０００７】
そして、従来はこの比較的大きな径の金属粉、切り粉等の除去は汚液槽内の液体を全て排出した後、人手等による物理的作業で清掃を行っている。またこの場合も堆積した比較的大きな粒径の金属粉、切り粉等の汚物には、処理に用いた液体が付着しているため、この液体とともに汚物が外部に排出され、環境問題を生じる可能性が強いものであった。
【０００８】
本発明は上述の如き問題点を解決しようとするものであって、ポンプを利用する事なく、汚液の濾過手段への移送を行い、処理すべきポンプの耐薬品性、耐熱性等に制約される事がないようにする。また、汚液中に含まれる粒子径の大きさ、材質等にかかわりなく、濾過作業を迅速に行う事ができるようにするものである。そして、急速な液移動を行い、汚液収納部から濾過槽への迅速な液移動によって汚液の迅速な濾過作業を可能にする。
【０００９】
また、汚液収納部の下底に堆積した汚物も、汚液と共に迅速に濾過手段に導入し、ポンプを用いた作業では困難であった堆積した汚物の導入も可能とする。また、汚液から除去された汚物の乾燥を簡易に行い、汚物を廃棄する際に環境へ悪影響を及ぼす汚液を汚物から除去し、乾燥後の汚物の廃棄を可能とし、環境への配慮を可能とする濾過装置を得ようとするものである。
【００１０】
【課題を解決するための手段】
本発明は、上述の如き課題を解決するため、汚液収納部との連通を開閉弁により遮断した状態で減圧機構に接続し一定の減圧度まで減圧導入槽内を減圧した後、開閉弁を開放して汚液収納部と減圧導入槽とを連通し、減圧導入槽の減圧による負圧を利用して汚液を減圧導入槽内に導入し、この汚液の導入側から排出側に到る流路中に汚液の濾過手段を配置し、この濾過手段により汚液の濾過を行うことを特徴とするものである。
【００１１】
また、上記の発明を実現する装置は、減圧機構に接続すると共に汚液収納部と開閉弁を介して連通し、開閉弁の閉止による汚液収納部との連通遮断時に、減圧機構で一定の減圧度まで内部を減圧した後に、開閉弁を開放し負圧を利用して汚液を導入するとともに、導入後に汚液の排出が可能な減圧導入槽と、この減圧導入槽の導入側から排出側に到る流路中に配置し汚液の濾過を行う濾過手段とから成るものである。
【００１２】
また、減圧導入槽には、圧力気体を導入可能とし、濾過済液を圧力気体の圧力により排出可能としたものであっても良い。
【００１３】
また、減圧導入槽は、槽内を減圧し残留した汚物の減圧乾燥を可能としたものであっても良い。
【００１４】
【作用】
本発明は、上述の如く構成したものであり、洗浄作業、メッキ作業、金属素材の切削加工に用いる切削油、その他の濾過を対象とする汚液の濾過を行うには、まず減圧導入槽を減圧機構によって減圧する。この減圧導入槽内の減圧状態に於て、汚液収納部と減圧導入槽とを連通すれば、汚液は減圧導入槽内に負圧によって急激に移送される。この移送は、ポンプを使用するものではないから、減圧導入槽の減圧状態に応じて、汚液収納部内の汚液は急激に迅速な移動を可能とする。
【００１５】
また、ポンプを利用する事なく、汚液の濾過手段への移送を行うから、処理すべきポンプの耐薬品性、耐熱性等に制約される事がない。また、汚液中に含まれる粒子径の大きさ、材質等にかかわりなく、濾過作業を迅速に行う事ができる。 また、汚液収納部の下底に堆積した汚物も汚液と共に迅速に濾過手段に導入し、ポンプを用いた作業では困難であった、堆積した汚物の導入も可能となる。
【００１６】
そして濾過手段は、減圧導入槽への汚液の導入側から排出側に到る流路中に配置すれば良く、減圧導入槽よりも汚液の流入側に設けても良いし、減圧導入槽からの汚液の流出側に設けても良く、また減圧導入槽内に設けても良い。そして、上記汚液の流路に於いて濾過手段により汚液は濾過される。濾過手段により濾過を行った汚液は、汚液収納部に復元し、循環しながら汚液の濾過を行っても良いし、他の適宜の位置に濾過した汚液を収納しても良い。
【００１７】
このように、汚液を減圧導入槽に導入し、濾過作用により減圧導入槽内に汚液に含まれる汚物が堆積した場合には、そのまま減圧導入槽内から汚物を除去しても良いが、未処理の状態で汚物を除去すると、汚物に被洗浄物の洗浄溶剤、切削油、メッキ液等の汚液が付着したまま廃棄を行うものとなり、環境に及ぼす影響が大きく好ましくない。
【００１８】
そこで、減圧導入槽内に汚物が堆積した状態で減圧機構を作動させる事により、減圧導入槽内を負圧状態とすれば、減圧導入槽内の、液を付着させた汚物は、減圧による沸点の低下によって汚液が揮発し、減圧機構側に吸引されるから、減圧導入槽内の汚物は乾燥状態となる。これを減圧導入槽内から取り出す事によって液付着のない汚物とする事ができ、環境に及ぼす影響も少なく、処理が極めて容易となるものである。また、揮発させた汚液は凝縮して再利用する。
【００１９】
また、濾過手段は、減圧導入槽内のみに設けるものではなく、減圧導入槽に対して、汚液の導入側から排出側に到る流路中に汚液の濾過手段を配置すればよいものであるから、上記の汚物の乾燥は減圧導入槽内に濾過手段が配置された場合か、汚物を減圧導入槽内に減圧手段等を用いて導入した場合に有効なものとなる。
【００２０】
また、減圧導入槽に圧力気体を充填する機構を接続すれば、濾過を完了した液を移送する場合に、減圧導入槽内に圧力気体を導入する事によって、濾過済の汚液を急速に目的部に移送する事が可能となる。
【００２１】
また、減圧導入槽内に残留する汚物に付着している汚液は、圧力気体によって相当程度の液体を汚物から除去し、目的部に移送する事が可能となる。そしてこの圧力気体による汚液の移送と、汚物からのある程度の汚液の除去を行った後に減圧機構を作動し、減圧導入槽内を減圧する事により、汚物に付着した液体の低沸点化に伴う揮発乾燥を更に容易とする事ができる。
【００２２】
本発明は上述の如く汚液を、ポンプを使用する事なく減圧手段によって減圧導入槽に移送し、この移送流路中にてこれを濾過するものであるから、汚液の移送を迅速に行う事ができる。また、濾過した汚物の乾燥も減圧導入槽内を減圧して容易に行う事ができ、環境に及ぼす影響を最小限とする事が可能となるものである。
【００２３】
【実施例】
以下、本発明の一実施例を図１に於て説明すれば、(１０)は汚液収納部で、汚液(１１)を収納する槽により形成したものでも良いし、汚液の発生源であっても良い。この汚液収納部(１０)内に汚液(１１)を収納する。この汚液(１１)は、汚液収納部(１０)内に濾過作業前に収納されたり、濾過作業の完了した後に復元収納したりする事が可能である。この汚液(１１)は、被洗浄物の洗浄溶剤であったり、切削油であったり、メッキに使用するメッキ液であるとか、適宜の工業上の処理に使用する液体である。
【００２４】
また、この汚液収納部(１０)には、液排出側に移送配管(１２)を接続し、この移送配管(１２)を減圧導入槽(１３)の液導出側に固定的に接続している。また移送配管(１２)には第１開閉弁(１４)を形成し、この第１開閉弁(１４)と減圧導入槽(１３)との間に圧力計(１５)を配置する。また、移送配管(１２)の第１開閉弁(１４)と圧力計(１５)の間に、第２開閉弁(１６)を配置し、この第２開閉弁(１６)介して圧力気体の導入口(１７)を接続している。
【００２５】
また、減圧導入槽(１３)内にはフィルター等の濾過手段(１８)を形成し、この濾過手段(１８)を通過させる事により汚液(１１)の濾過を可能としている。そして減圧導入槽(１３)には上端を密閉する蓋体(２０)を、パッキン(２１)等を介して配置するとともに、大気開放弁(２２)を接続している。
【００２６】
また、減圧導入槽(１３)の液排出側である下端には、濾過手段(１８)を介した位置に汚液(１１)の放出管(２３)を固定的に接続し、この放出管(２３)を、第３開閉弁(２４)を介して汚液収納部(１０)の液導入側に固定的に接続している。また第３開閉弁(２４)と放出管(２３)との間には第２圧力計(２５)を配置している。そして、放出管(２３)には、汚液収納部(１０)とは第３開閉弁(２４)を介した位置に第４開閉弁(２６)を配置し、この第４開閉弁(２６)に接続した減圧管(２７)に、バキュームポンプ、エゼクター機構等の減圧機構(２８)を接続している。この減圧機構(２８)には、第４開閉弁(２６)との間の減圧管(２７)にストレーナー(３０)を配置し、流入する切り粉等の大型の汚物の減圧機構(２８)への導入を防止している。
【００２７】
上述の如く構成したものに於て、減圧導入槽(１３)を用いて汚液収納部(１０)に収納されている汚液(１１)の濾過を行うには、第１開閉弁(１４)、第２開閉弁(１６)、第３開閉弁(２４)及び大気開放弁(２２)を閉止した後、第４開閉弁(２６)を開放し、減圧機構(２８)を作動する。この減圧機構(２８)の作動により減圧導入槽(１３)内は減圧される。そして、減圧導入槽(１３)内が一定の減圧状態となった時に、第４開閉弁(２６)を閉止した後、第１開閉弁(１４)を開放する事により、汚液収納部(１０)内の汚液は減圧導入槽(１３)内の負圧により、移送配管(１２)を介して減圧導入槽(１３)内に導入される。
【００２８】
この、減圧導入槽(１３)内への汚液(１１)の導入に於いては、ポンプを利用する事なく、汚液(１１)の濾過手段(１８)への移送を行うから、処理すべきポンプの耐薬品性、耐熱性等に制約される事がない。また、汚液(１１)中に含まれる粒子径の大きさ、材質等にかかわりなく、濾過作業を迅速に行う事ができる。また、汚液収納部(１０)の下底に堆積した汚物も汚液(１１)と共に迅速に濾過手段に導入し、ポンプを用いた作業では困難であった、堆積した汚物の導入も可能となる。
【００２９】
この汚液の導入後、濾過手段(１８)によって汚液(１１)を濾過する。この濾過手段による濾過方法は任意の方法を用いることが出来るが、一実施例では減圧導入槽(１３)の内周に、フイルター、スクリーン等を配置し、この濾過手段(１８)を通過させて汚液(１１)を汚液収納部(１０)に復元する。
【００３０】
汚液収納部(１０)への減圧導入槽(１３)からの汚液(１１)の復元は、第１開閉弁(１４)、第２開閉弁(１６)及び第４開閉弁(２６)を閉止した後、大気開放弁(２２)及び第３開閉弁(２４)を開放する事によって、濾過済みの汚液(１１)は汚液収納部(１０)に復元が可能となる。そしてこの場合、汚液収納部(１０)が減圧導入槽(１３)よりも下方に位置する場合であれば、汚液(１１)の自重により減圧導入槽(１３)から汚液収納部(１０)への移送が簡易に可能となる。また、汚液(１１)のより迅速な汚液収納部(１０)への復元、若しくは汚液収納部(１０)が減圧導入槽(１３)と同一平面、若しくは更に上部方向に位置するような場合には、圧力気体の導入口(１７)から圧力気体を減圧導入槽(１３)に導入する。
【００３１】
この圧力気体を用いた、減圧導入槽(１３)から汚液収納部(１０)への汚液(１１)の移送は、大気開放弁(２２)、第１開閉弁(１４)および第４開閉弁(２６)を閉止した後、第３開閉弁(２４)を開放状態として第２開閉弁(１６)を開放し、圧力気体の導入口(１７)から、圧力気体を減圧導入槽(１３)内に導入する。この圧力気体の導入により、減圧導入槽(１３)内の汚液(１１)は強制的に汚液収納部(１０)内に加圧移送する事ができる。そして、この圧力気体の導入により減圧導入槽(１３)内の汚液(１１)を汚液収納部(１０)に圧力移送すれば、迅速な汚液(１１)の移送が可能となるばかりでなく、減圧導入槽(１３)内に残留し、汚物に付着した汚液(１１)も汚物から一定の範囲で剥離されて汚液収納部(１０)側に移送されるから汚物の液切りが可能となる。
【００３２】
また、濾過済み汚液(１１)の排出や、液切りが完了した後も、減圧導入槽(１３)内に圧力気体を導入すれば、この圧力気体は汚液収納部(１０)内に送られて汚液収納部(１０)内の汚液(１１)をパブリングする。その結果、汚液収納部(１０)内の汚液(１１)に含まれる汚物は汚液(１１)内で浮遊する。この浮遊状態の時に、減圧導入槽(１３)内を減圧して、汚液収納部(１０)内の汚液(１１)を減圧導入槽(１３)内に吸引すれば、汚物の減圧導入槽(１３)内への移送効率を高めることが出来、効率の良い濾過作業を可能とする。
【００３３】
次に第３開閉弁(２４)、第１開閉弁(１４)、第２開閉弁(１６)及び大気開放弁(２２)を閉止した後、第４開閉弁(２６)を開放し、減圧機構(２８)を作動させ、減圧導入槽(１３)内を減圧すれば、減圧導入槽(１３)内に残留し汚物に付着している汚液(１１)は、減圧機構(２８)による減圧の結果、沸点を低下させて気化蒸発し、汚物の乾燥を行う事ができる。このように汚物に付着した汚液を除去する事により、溶剤、切削油、その他の液体を付着させたまま廃棄することによる環境汚染を少なくできるため、汚物の処理が容易なものとなる。また、汚物から気化蒸発した汚液(１１)は凝縮器(図示せず)等に因って液化凝縮し回収する。
【００３４】
また、減圧導入槽(１３)内に設置するフィルター等の濾過手段(１８)を減圧導入槽(１３)から取り外し可能なものとすれば、濾過手段(１８)を減圧導入槽(１３)から取り外して減圧導入槽(１３)より外部に持ち出す事により、乾燥された汚物の除去が極めて容易となるものである。また前記の第１開閉弁(１４)、第３開閉弁(２４)等はバタフライ弁等の、液の流通抵抗が少なく、汚物による目詰まり等が生じにくい機構の開閉弁を用いれば、移送配管(１２)を介した汚液(１１)の迅速な減圧導入槽(１３)への導入と、減圧導入槽(１３)からの汚液収納部(１０)への汚液(１１)の復元が可能となるものである。
【００３５】
また、上記の実施例に於いては、汚液収納部(１０)の液排出側と、減圧導入槽(１３)の液導入側とを移送配管(１２)にて、分離を前提とせずに固定的に接続し、また、減圧導入槽(１３)の液排出側と汚液収納部(１０)の液導入側とを放出管(２３)にて分離を前提とせずに固定的に接続した。しかし、他の異なる実施例に於いては、汚液収納部(１０)に接続する移送配管(１２)及び放出管(２３)を、汚液収納部(１０)に対して着脱可能に形成し、任意の汚液収納部(１０)に移送配管(１２)及び放出管(２３)を接続可能とすれば、減圧導入槽(１３)を任意の汚液収納部(１０)が設置された位置まで移送して、任意の汚液収納部(１０)の汚液(１１)を濾過することが可能となり、濾過装置としての使用効率を著しく高めることが可能となる。
【００３６】
そして、上記の任意の汚液収納部(１０)への移送配管(１２)及び放出管(２３)の接続方法は、汚液収納部(１０)に移送配管(１２)及び放出管(２３)の着脱口を形成して行っても良いし、汚液収納部(１０)の上部から移送配管(１２)及び放出管(２３)を投入するものであっても良い。
【００３７】
また、上記の実施例では、減圧導入槽(１３)を１槽とし、この１槽の減圧導入槽(１３)を減圧機構(２８)に直接接続し、減圧導入槽(１３)内を減圧機構(２８)で減圧することにより汚液(１１)の導入を行っている。しかし、１槽の減圧導入槽(１３)内の減圧を直接行う場合には、汚液(１１)の導入に伴って減圧導入槽(１３)内の減圧度合いが低下するから、減圧導入槽(１３)の容積よりも少ない量の汚液しか導入できない。その為、減圧導入槽(１３)の濾過能力よりも少ない汚液を導入して濾過を行うものとなり効率的ではない。
【００３８】
そこで、他の異なる実施例では、図２に示す如く、汚液(１１)の濾過手段(１８)を備えた減圧導入槽(１３)に、減圧導入槽(１３)よりも容積の大きな補助の減圧導入槽(１３a)を接続し、この補助の減圧導入槽(１３ａ)に汚液収納部(１０)を接続すると共に、補助の減圧導入槽(１３ａ)に減圧機構(２８)を接続して補助の減圧導入槽(１３ａ)を減圧する。そして、この減圧状態の補助の減圧導入槽(１３ａ)内に、負圧を利用し汚液収納部(１０)から汚液を導入すれば、減圧導入槽(１３)の容積と同一又は減圧導入槽(１３)の容積よりも大きな量の汚液(１１)を補助の減圧導入槽(１３ａ)に導入することができる。
【００３９】
この補助の減圧導入槽(１３ａ)から減圧導入槽(１３)に第５開閉弁(３２)を介して汚液(１１)を導入すれば、減圧導入槽(１３)の濾過能力に対応した汚液(１１)を減圧導入槽(１３)に導入することができる。減圧導入槽(１３)は、濾過能力に対応した汚液(１１)を充分に導入できるから、減圧導入槽(１３)を小型化する事が可能となり、廉価な装置を得ることが出来る。また、補助の減圧導入槽(１３ａ)を大型化すれば、濾過作業が終了し汚液収納部(１０)または他の目的部に濾過済み汚液(１１)を排出した後、減圧等を行うことなく、補助の減圧導入槽(１３ａ)から減圧導入槽(１３)に、直ちに残りの汚液(１１)を導入して濾過作業を行うことが出来、小型の減圧導入槽(１３)で濾過作業を繰り返し迅速に行うことが可能となる。
【００４０】
また、補助の減圧導入槽(１３ａ)は、減圧導入槽(１３)よりも上方向に配置し、補助の減圧導入槽(１３ａ)内の汚液(１１)は重力により減圧導入槽(１３)に導入する。また、補助の減圧導入槽(１３ａ)は、圧力気体の導入口(１７)を接続し、圧力気体を導入して、補助の減圧導入槽(１３ａ)内の汚液(１１)を圧力気体の圧力により減圧導入槽(１３)に移送可能としても良い。
【００４１】
また、この実施例では汚液収納部(１０)の汚液排出側と、補助の減圧導入槽(１３ａ)の液導入側とを移送配管(１２)にて接続すると共に減圧導入槽(１３)の液排出側と汚液収納部(１０)の液導入側とを放出管(２３)にて接続している。また、減圧管(２７)と補助の減圧導入槽(１３ａ)とを、第６開閉弁(３３)を介して減圧連通管(３４)により接続し、補助の減圧導入槽(１３ａ)の減圧を可能としている。また、この補助の減圧導入槽(１３ａ)の減圧は、補助の減圧導入槽(１３ａ)のみ減圧するものであっても良いが、減圧時に第５開閉弁(３２)を開弁し、減圧導入槽(１３)と補助の減圧導入槽(１３ａ)を同時に減圧するものとしても良い。この場合は、１回の減圧作業で多くの汚液(１１)を減圧導入槽(１３)及び補助の減圧導入槽(１３ａ)に導入できるから、減圧作業の回数を減らして、１回の減圧作業で複数回の濾過作業を繰り返す事が可能となる。
【００４２】
また、上記実施例では、濾過手段(１８)を減圧導入槽(１３)内に配置したが、濾過手段(１８)は必ずしも減圧導入槽(１３)内に配置する必要はなく、汚液(１１)の導入側から排出側に到る流路中に汚液(１１)の濾過手段(１８)を配置したものでもよい。汚液は減圧導入槽(１３)への導入過程または排出過程に於いて濾過手段(１８)によって濾過を行うことが可能となる。また、前述した減圧導入槽(１３)内での汚物の減圧乾燥を行う場合には、減圧導入槽(１３)内に濾過手段を配置するのが好ましい。
【００４３】
【発明の効果】
本発明は上述の如く構成したもので、液体の濾過に於いてポンプを用いる事がないから、機構を簡略化するばかりでなく、従来問題となっていたポンプの耐液性や耐熱性等に対する配慮が一切不要となる。また、汚液の中に含まれる大きな粒子、切り粉等が存在しても何ら問題なく、汚液の移送が可能となり、ポンプを痛めるとか、汚液の移送が困難となるような事がない。
【００４４】
また、減圧手段を用いるために、汚液の減圧導入槽への移送を極めて迅速に行う事ができ、迅速な濾過作業が可能となる。また減圧機構を用いるために減圧導入槽内に濾過終了後に残留する汚物の乾燥が極めて容易となり、汚物の処理に於ける環境への悪影響を最小限とする事ができるものである。
【図面の簡単な説明】
【図１】本発明の一実施例を示す断面図。
【図２】補助槽を設けた本発明の異なる実施例の断面図。
【図３】従来公知例の濾過装置を示す断面図である。
【符号の説明】
１１ 汚液
１３ 減圧導入槽
１８ 濾過手段
２８ 減圧機構[0001]
[Industrial applications]
The present invention relates to a cleaning method used for cleaning an object to be cleaned, a plating solution, a processing solution used for cutting or rolling, a processing solution used for a surface treatment step, and a filtering method and apparatus for removing dirt from other dirt. It is related.
[0002]
[Prior art]
Conventionally, as described above, in order to perform liquid filtration as described above, as shown in FIG. 3, from a waste liquid storage tank (2) storing waste liquid (1) to a filtration device (4) using a pump (3). The waste liquid (1) is fed under pressure to filter the waste liquid (1), and the filtered waste liquid (1) is restored to the waste liquid storage tank (2), thereby circulating the waste liquid (1) for filtration. It is carried out.
[0003]
[Problems to be solved by the invention]
However, in the conventional method as described above, since a pump is used for transferring the waste liquid, there are limitations on the pumps that can be used due to the liquid resistance, chemical resistance, heat resistance, etc. Often there is a limit on the possible filth.
[0004]
Further, when the pump is used for a filtration device, the pump may be damaged or cannot be pumped due to the size and material of the particles contained in the waste liquid. In addition, when a pump is used, the flow rate is determined by the capacity of the pump. Therefore, rapid movement of the waste liquid is restricted, and rapid filtration of the waste liquid is often difficult. That is, it is difficult to rapidly transfer waste liquid by using a pump.
[0005]
Also, with conventional filtration equipment, it is difficult to drain and dry the liquid adhering to the filth, and the current situation is that the filth is discarded with a large amount of liquid adhering to the environment that has an adverse effect on the environment. This is extremely undesirable in terms of environmental protection.
[0006]
In addition, in a conventional method of filtering waste liquid using a pump, a strainer is often provided on the injection side of the pump in order to protect the pump from large-sized waste such as cutting chips. In this way, it is necessary to introduce the dirt deposited on the bottom of the dirt tank, for example, dirt having a large particle diameter, such as relatively large chips and metal powder, into the circulation path of the pump to filter and remove the dirt. This was difficult because of the possibility of breakage and clogging of the strainer. Therefore, conventionally, small particles in the waste liquid are removed by a filter in the circulation path of the pump, but the above-mentioned relatively large particle-based waste, metal powder, cutting chips, etc. remain deposited in the liquid tank. In this condition, only small particles were removed by a filter, and it was difficult to completely filter the waste liquid.
[0007]
Conventionally, in order to remove metal powder, cutting powder, and the like having a relatively large diameter, the liquid in the waste liquid tank is entirely discharged, and then cleaning is performed manually by hand or the like. Also in this case, since the liquid used for the treatment is attached to the deposited waste such as metal powder and cutting powder having a relatively large particle size, the waste is discharged to the outside together with this liquid, which may cause environmental problems. The nature was strong.
[0008]
The present invention is intended to solve the above-described problems, and transfers sewage to a filtration unit without using a pump, thereby limiting the chemical resistance, heat resistance, etc. of the pump to be treated. Not be done. Further, the present invention enables a filtering operation to be performed promptly regardless of the size, material, and the like of the particle diameter contained in the waste liquid. Then, the liquid is rapidly moved, and the rapid liquid transfer from the waste liquid storage section to the filtration tank enables a quick filtration operation of the waste liquid.
[0009]
In addition, the filth deposited on the lower bottom of the filth storage unit is quickly introduced into the filtering means together with the filth, and the deposited filth, which has been difficult with the operation using a pump, can be introduced. In addition, the filth removed from the sewage is easily dried, the sewage that has a negative impact on the environment when the filth is discarded is removed from the filth, and the waste after drying can be discarded. It is intended to obtain a filtering device that can be used.
[0010]
[Means for Solving the Problems]
The present invention, in order to solve the problems as described above, after connecting to the pressure reducing mechanism in a state where the communication with the waste liquid storage unit is shut off by the on-off valve and reducing the pressure in the depressurization introduction tank to a certain degree of pressure reduction, the on-off valve It is opened to communicate the waste liquid storage unit with the reduced pressure introduction tank, and the waste liquid is introduced into the reduced pressure introduction tank using the negative pressure due to the reduced pressure of the reduced pressure introduction tank, and the waste liquid reaches the discharge side from the introduction side of the waste liquid. A filtering means for filth is disposed in the flow path, and the filth is filtered by the filtering means.
[0011]
Further, the device for realizing the above invention is connected to the pressure reducing mechanism and communicates with the waste liquid storage unit via the on-off valve. After depressurizing the inside to the degree of depressurization, open and close the on-off valve to introduce the waste liquid using negative pressure, and discharge the waste liquid after introduction, and discharge it from the introduction side of this depressurization introduction tank. And a filtering means arranged in the flow path to the side to filter the waste liquid.
[0012]
Further, the reduced pressure introduction tank may be configured so that a pressurized gas can be introduced and the filtered liquid can be discharged by the pressure of the pressurized gas.
[0013]
Further, the vacuum introduction tank may be one in which the inside of the tank is depressurized and the remaining waste can be dried under reduced pressure.
[0014]
[Action]
The present invention is configured as described above, the washing operation, the plating operation, the cutting oil used for the cutting of the metal material, to perform the filtration of the contaminated liquid for other filtration, first, the vacuum introduction tank The pressure is reduced by the pressure reducing mechanism. In the depressurized state in the decompression introduction tank, if the waste liquid storage unit and the decompression introduction tank are connected, the waste liquid is rapidly transferred into the decompression introduction tank by the negative pressure. Since this transfer does not use a pump, the waste liquid in the waste liquid storage unit can rapidly and rapidly move according to the reduced pressure state of the reduced pressure introduction tank.
[0015]
Further, since the waste liquid is transferred to the filtration means without using a pump, there is no restriction on the chemical resistance, heat resistance, etc. of the pump to be treated. In addition, the filtering operation can be performed promptly regardless of the size, material, and the like of the particle diameter contained in the waste liquid. In addition, the filth accumulated on the lower bottom of the filth storage unit is quickly introduced into the filtration unit together with the filth, and the accumulated filth, which has been difficult with the operation using a pump, can be introduced.
[0016]
The filtration means may be disposed in the flow path from the introduction side of the waste liquid to the vacuum introduction tank to the discharge side, and may be provided on the inflow side of the waste liquid rather than the vacuum introduction tank. May be provided on the outflow side of the waste liquid from the tank, or may be provided in a reduced pressure introduction tank. Then, in the flow path of the waste liquid, the waste liquid is filtered by the filtering means. The contaminated liquid filtered by the filtering means may be restored to the contaminated liquid storage section, and the contaminated liquid may be filtered while being circulated, or the filtered contaminated liquid may be stored in another appropriate position.
[0017]
As described above, the waste liquid is introduced into the reduced-pressure introduction tank, and when the dirt contained in the waste liquid is accumulated in the reduced-pressure introduction tank by the filtration action, the dirt may be removed from the reduced-pressure introduction tank as it is, If the filth is removed in an untreated state, the filth is discarded while the filth such as a cleaning solvent, a cutting oil, and a plating solution adheres to the filth, which has a large effect on the environment, which is not preferable.
[0018]
Therefore, by operating the decompression mechanism in a state where dirt is accumulated in the decompression introduction tank, if the inside of the decompression introduction tank is set to a negative pressure state, the dirt in the decompression introduction tank, to which the liquid is attached, has a boiling point due to the reduced pressure As the wastewater evaporates due to the decrease in the pressure, the wastewater in the vacuum introduction tank is in a dry state because the wastewater is volatilized and sucked toward the pressure reducing mechanism. By removing this from the vacuum introduction tank, it is possible to make it a filth without liquid adherence, and there is little influence on the environment, and the treatment becomes extremely easy. In addition, the contaminated waste liquid is condensed and reused.
[0019]
Further, the filtration means is not provided only in the reduced pressure introduction tank, and may be one in which the filtration means for the waste liquid is disposed in the flow path from the introduction side to the discharge side of the waste liquid with respect to the reduced pressure introduction tank. Therefore, the above-mentioned drying of the waste becomes effective when the filtering means is disposed in the reduced-pressure introduction tank or when the waste is introduced into the reduced-pressure introduction tank using the pressure reducing means or the like.
[0020]
In addition, if a mechanism to fill the depressurized gas introduction tank with a pressurized gas is connected, when transferring the liquid after filtration, the pressurized gas is introduced into the decompressed gas introduction tank to quickly filter the contaminated liquid. Can be transferred to the department.
[0021]
Further, the waste liquid adhering to the waste remaining in the reduced-pressure introducing tank can be removed to a considerable extent by the pressurized gas from the waste and transferred to the target part. After the transfer of the waste liquid by the pressurized gas and the removal of the waste liquid to some extent from the waste, the pressure reducing mechanism is operated to reduce the pressure in the vacuum introduction tank, thereby lowering the boiling point of the liquid attached to the waste. The accompanying volatile drying can be further facilitated.
[0022]
As described above, the present invention transfers a waste liquid to a reduced-pressure introduction tank by a pressure reducing means without using a pump, and filters the waste liquid in this transfer flow path, so that the waste liquid is quickly transferred. Can do things. In addition, drying of the filtered filth can be easily performed by reducing the pressure in the reduced-pressure introducing tank, and the influence on the environment can be minimized.
[0023]
【Example】
Hereinafter, one embodiment of the present invention will be described with reference to FIG. 1. (10) is a waste liquid storage part which may be formed by a tank for storing the waste liquid (11) or a source of waste liquid. It may be. The waste liquid (11) is stored in the waste liquid storage part (10). The waste liquid (11) can be stored in the waste liquid storage unit (10) before the filtering operation, or can be restored and stored after the filtering operation is completed. The waste liquid (11) is a cleaning solvent for the object to be cleaned, a cutting oil, a plating solution used for plating, or a liquid used for appropriate industrial treatment.
[0024]
Also, a transfer pipe (12) is connected to the liquid discharge side of the waste liquid storage section (10), and the transfer pipe (12) is fixedly connected to the liquid outlet side of the reduced-pressure introduction tank (13). I have. A first open / close valve (14) is formed in the transfer pipe (12), and a pressure gauge (15) is disposed between the first open / close valve (14) and the reduced-pressure introducing tank (13). In addition, a second on-off valve (16) is disposed between the first on-off valve (14) and the pressure gauge (15) of the transfer pipe (12), and the introduction of the pressurized gas through the second on-off valve (16). The mouth (17) is connected.
[0025]
In addition, a filtration means (18) such as a filter is formed in the reduced pressure introduction tank (13), and the filtration of the waste liquid (11) is enabled by passing the filtration means (18). A lid (20) for sealing the upper end is disposed in the vacuum introducing tank (13) via a packing (21) and the like, and an atmosphere release valve (22) is connected to the lid (20).
[0026]
Further, a discharge pipe (23) of the waste liquid (11) is fixedly connected to a lower end on the liquid discharge side of the reduced-pressure introduction tank (13) through a filtration means (18). 23) is fixedly connected to the liquid introduction side of the waste liquid storage part (10) via a third on-off valve (24). A second pressure gauge (25) is arranged between the third on-off valve (24) and the discharge pipe (23). The discharge pipe (23) is provided with a fourth on-off valve (26) at a position between the waste liquid storage part (10) and the third on-off valve (24), and this fourth on-off valve (26) Is connected to a pressure reducing mechanism (28) such as a vacuum pump and an ejector mechanism. In this decompression mechanism (28), a strainer (30) is arranged in a decompression pipe (27) between the fourth on-off valve (26) and a decompression mechanism (28) for large-sized contaminants such as inflowing chips. Is being introduced.
[0027]
In the apparatus configured as described above, the first on-off valve (14) is used to filter the waste liquid (11) stored in the waste liquid storage part (10) by using the vacuum introduction tank (13). After closing the second on-off valve (16), the third on-off valve (24) and the atmosphere opening valve (22), the fourth on-off valve (26) is opened and the pressure reducing mechanism (28) is operated. The operation of the pressure reducing mechanism (28) reduces the pressure in the pressure reducing tank (13). Then, when the inside of the vacuum introduction tank (13) is in a constant reduced pressure state, the fourth on-off valve (26) is closed, and then the first on-off valve (14) is opened. The waste liquid in () is introduced into the vacuum introduction tank (13) via the transfer pipe (12) by the negative pressure in the vacuum introduction tank (13).
[0028]
In the introduction of the waste liquid (11) into the reduced pressure introduction tank (13), the waste liquid (11) is transferred to the filtration means (18) without using a pump. There is no restriction on the chemical resistance and heat resistance of the pump to be used. In addition, the filtering operation can be performed promptly irrespective of the size and material of the particle diameter contained in the waste liquid (11). In addition, the waste accumulated on the lower bottom of the waste storage unit (10) is quickly introduced into the filtration means together with the waste (11), and it is possible to introduce the accumulated waste, which was difficult with a pump. Become.
[0029]
After the introduction of the waste liquid, the waste liquid (11) is filtered by the filtering means (18). Although any method can be used as a filtration method by this filtration means, in one embodiment, a filter, a screen, or the like is arranged on the inner periphery of the vacuum introduction tank (13), and the filtration means (18) is passed through. The waste liquid (11) is restored to the waste liquid storage part (10).
[0030]
The restoration of the waste liquid (11) from the reduced-pressure introduction tank (13) to the waste liquid storage part (10) is performed by the first on-off valve (14), the second on-off valve (16), and the fourth on-off valve (26). After the closing, the air release valve (22) and the third on-off valve (24) are opened, so that the filtered waste liquid (11) can be restored to the waste liquid storage part (10). In this case, if the waste liquid storage unit (10) is located below the reduced pressure introduction tank (13), the waste liquid storage unit (10) is removed from the reduced pressure introduction tank (13) by the weight of the waste liquid (11). ) Can be easily transferred. Further, the waste liquid (11) can be quickly restored to the waste liquid storage part (10), or the waste liquid storage part (10) can be located on the same plane as the vacuum introduction tank (13) or further upward. In this case, the pressure gas is introduced from the pressure gas introduction port (17) into the reduced pressure introduction tank (13).
[0031]
The transfer of the contaminated liquid (11) from the decompression introducing tank (13) to the contaminated liquid storage part (10) using the pressurized gas is performed by an air release valve (22), a first on-off valve (14), and a fourth on-off valve. After closing the valve (26), the third on-off valve (24) is opened, the second on-off valve (16) is opened, and the pressure gas is introduced from the pressure gas inlet (17) into the depressurization introduction tank (13). Introduce within. By introducing the pressurized gas, the waste liquid (11) in the reduced-pressure introduction tank (13) can be forcibly transported under pressure into the waste liquid storage part (10). Then, if the waste liquid (11) in the vacuum introduction tank (13) is pressure-transferred to the waste liquid storage part (10) by the introduction of the pressurized gas, the waste liquid (11) can be quickly transferred. Instead, the waste liquid (11) remaining in the vacuum introduction tank (13) and adhering to the waste is also separated from the waste in a certain range and transferred to the waste storage unit (10) side. It becomes possible.
[0032]
Also, even after the draining of the filtered waste liquid (11) and the draining are completed, if a pressurized gas is introduced into the reduced-pressure introduction tank (13), the pressure gas is sent into the waste liquid storage unit (10). Then, the filth (11) in the filth container (10) is published. As a result, the waste contained in the waste liquid (11) in the waste liquid storage part (10) floats in the waste liquid (11). In this floating state, the pressure in the vacuum introduction tank (13) is reduced, and the waste liquid (11) in the waste liquid storage unit (10) is sucked into the vacuum introduction tank (13). (13) The efficiency of transfer into the inside can be increased, and efficient filtration can be performed.
[0033]
Next, after closing the third on-off valve (24), the first on-off valve (14), the second on-off valve (16) and the atmosphere opening valve (22), the fourth on-off valve (26) is opened, and the pressure reducing mechanism is opened. By operating (28) and reducing the pressure in the vacuum introduction tank (13), the waste liquid (11) remaining in the vacuum introduction tank (13) and adhering to the waste is reduced in pressure by the pressure reducing mechanism (28). As a result, the boiling point is reduced to evaporate and evaporate, and the waste can be dried. By removing the contaminants adhering to the contaminants in this way, it is possible to reduce environmental pollution caused by discarding the solvent, cutting oil, and other liquids with the contaminants adhered, thereby facilitating the disposal of the contaminants. Further, the waste liquid (11) vaporized and evaporated from the waste is liquefied and condensed by a condenser (not shown) or the like and collected.
[0034]
Further, if the filtering means (18) such as a filter installed in the vacuum introduction tank (13) is made removable from the vacuum introduction tank (13), the filtering means (18) is removed from the vacuum introduction tank (13). By taking it out of the vacuum introduction tank (13), it is extremely easy to remove dried contaminants. If the first and third opening / closing valves (14) and (24) use an opening / closing valve of a mechanism such as a butterfly valve, which has a low flow resistance of liquid and hardly causes clogging by filth, etc. The rapid introduction of the waste liquid (11) into the reduced-pressure introduction tank (13) via the (12) and the restoration of the waste liquid (11) from the reduced-pressure introduction tank (13) to the waste liquid storage unit (10) are performed. It is possible.
[0035]
In the above embodiment, the liquid discharge side of the waste liquid storage unit (10) and the liquid introduction side of the vacuum introduction tank (13) are separated by the transfer pipe (12) without assuming separation. The liquid discharge side of the vacuum introduction tank (13) and the liquid introduction side of the waste liquid storage part (10) were fixedly connected by the discharge pipe (23) without assuming separation. . However, in another different embodiment, the transfer pipe (12) and the discharge pipe (23) connected to the waste liquid storage part (10) are formed detachably with respect to the waste liquid storage part (10). If the transfer pipe (12) and the discharge pipe (23) can be connected to an arbitrary waste liquid storage part (10), the decompression introduction tank (13) is located at a position where the arbitrary waste liquid storage part (10) is installed. And the waste liquid (11) in any waste liquid storage part (10) can be filtered, and the efficiency of use as a filtration device can be significantly improved.
[0036]
And, the connection method of the transfer pipe (12) and the discharge pipe (23) to the above-mentioned arbitrary waste liquid storage part (10) is such that the transfer pipe (12) and the discharge pipe (23) are connected to the waste liquid storage part (10). The transfer pipe (12) and the discharge pipe (23) may be inserted from the upper part of the waste liquid storage part (10).
[0037]
Further, in the above embodiment, the reduced-pressure introduction tank (13) is one tank, and this one reduced-pressure introduction tank (13) is directly connected to the pressure reducing mechanism (28), and the inside of the reduced-pressure introduction tank (13) is reduced. By reducing the pressure in (28), the waste liquid (11) is introduced. However, when directly reducing the pressure in the reduced pressure introduction tank (13), the degree of reduced pressure in the reduced pressure introduction tank (13) decreases with the introduction of the waste liquid (11). Only the amount of waste liquid smaller than the volume of 13) can be introduced. For this reason, filtration is performed by introducing a waste liquid that is less than the filtration capacity of the vacuum introduction tank (13), which is not efficient.
[0038]
Therefore, in another different embodiment, as shown in FIG. 2, an auxiliary auxiliary tank having a larger volume than the reduced-pressure introduction tank (13) is provided in the reduced-pressure introduction tank (13) provided with the filtering means (18) for the waste liquid (11). By connecting the vacuum introduction tank (13a), connecting the waste liquid storage unit (10) to the auxiliary vacuum introduction tank (13a), and connecting the pressure reduction mechanism (28) to the auxiliary vacuum introduction tank (13a). The pressure in the auxiliary vacuum introduction tank (13a) is reduced. Then, if the waste liquid is introduced from the waste liquid storage unit (10) into the auxiliary reduced-pressure introduction tank (13a) in the reduced-pressure state by using a negative pressure, the volume is equal to or less than the volume of the reduced-pressure introduction tank (13). A larger amount of waste liquid (11) than the volume of the tank (13) can be introduced into the auxiliary vacuum introduction tank (13a).
[0039]
If the waste liquid (11) is introduced from the auxiliary vacuum introduction tank (13a) to the vacuum introduction tank (13) via the fifth on-off valve (32), the contamination corresponding to the filtration capacity of the vacuum introduction tank (13) is obtained. The liquid (11) can be introduced into the vacuum introduction tank (13). The vacuum introduction tank (13) can sufficiently introduce the waste liquid (11) corresponding to the filtration capacity, so that it is possible to reduce the size of the vacuum introduction tank (13) and obtain an inexpensive apparatus. In addition, if the size of the auxiliary vacuum introduction tank (13a) is increased, the filtration operation is completed, the filtered waste liquid (11) is discharged to the waste liquid storage unit (10) or another destination, and then the pressure is reduced. Without the need, the remaining waste liquid (11) can be immediately introduced from the auxiliary vacuum introduction tank (13a) to the vacuum introduction tank (13) for filtration, and the filtration can be performed in the small vacuum introduction tank (13). Work can be repeatedly and quickly performed.
[0040]
The auxiliary vacuum introduction tank (13a) is disposed above the vacuum introduction tank (13), and the waste liquid (11) in the auxiliary vacuum introduction tank (13a) is reduced by gravity to reduce the vacuum introduction tank (13). To be introduced. The auxiliary vacuum introduction tank (13a) is connected to the pressure gas inlet (17), introduces the pressure gas, and converts the waste liquid (11) in the auxiliary vacuum introduction tank (13a) into the pressure gas. The pressure may be transferred to the reduced pressure introduction tank (13) by pressure.
[0041]
Further, in this embodiment, the waste liquid discharge side of the waste liquid storage unit (10) and the liquid introduction side of the auxiliary vacuum introduction tank (13a) are connected by the transfer pipe (12), and the vacuum introduction tank (13) is connected. The liquid discharge side is connected to the liquid introduction side of the waste liquid storage section (10) by a discharge pipe (23). Further, the decompression pipe (27) and the auxiliary decompression introduction tank (13a) are connected by a decompression communication pipe (34) via a sixth on-off valve (33), and the decompression of the auxiliary decompression introduction tank (13a) is reduced. It is possible. The pressure reduction in the auxiliary pressure-reducing introduction tank (13a) may be performed by reducing the pressure only in the auxiliary pressure-reducing introduction tank (13a). The tank (13) and the auxiliary pressure-reducing tank (13a) may be simultaneously depressurized. In this case, a large number of waste liquids (11) can be introduced into the reduced-pressure introduction tank (13) and the auxiliary reduced-pressure introduction tank (13a) by a single decompression operation. It becomes possible to repeat the filtering operation a plurality of times during the operation.
[0042]
Further, in the above embodiment, the filtering means (18) is arranged in the reduced-pressure introduction tank (13). However, the filtering means (18) does not necessarily need to be arranged in the reduced-pressure introduction tank (13). ) May be provided with a filtering means (18) for the waste liquid (11) in a flow path from the introduction side to the discharge side. The waste liquid can be filtered by the filtering means (18) during the process of introducing or discharging the waste liquid into the vacuum introduction tank (13). Further, in the case of performing the drying under reduced pressure of the dirt in the reduced pressure introduction tank (13), it is preferable to arrange a filtering means in the reduced pressure introduction tank (13).
[0043]
【The invention's effect】
Since the present invention is configured as described above and does not use a pump in filtering liquid, it not only simplifies the mechanism but also reduces the liquid resistance and heat resistance of the pump, which have been a problem in the past. No consideration is required. In addition, even if there are large particles, swarf, etc. contained in the waste liquid, the transfer of the waste liquid is possible without any problem, and the pump is not damaged or the transfer of the waste liquid does not become difficult. .
[0044]
In addition, since the decompression means is used, the transfer of the waste liquid to the decompression introduction tank can be performed very quickly, and a quick filtration operation can be performed. Further, since the decompression mechanism is used, it is extremely easy to dry the filth remaining after the filtration in the depressurization introduction tank, and it is possible to minimize adverse effects on the environment in the processing of the filth.
[Brief description of the drawings]
FIG. 1 is a sectional view showing an embodiment of the present invention.
FIG. 2 is a sectional view of another embodiment of the present invention provided with an auxiliary tank.
FIG. 3 is a cross-sectional view showing a conventionally known filtering device.
[Explanation of symbols]
11
Claims (6)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000268811A JP3539680B2 (en) | 2000-09-05 | 2000-09-05 | Filtration method and apparatus for wastewater |
| PCT/JP2001/007201 WO2002020123A1 (en) | 2000-09-05 | 2001-08-23 | Method and device for filtrating sewage fluid |
| AU2001280114A AU2001280114A1 (en) | 2000-09-05 | 2001-08-23 | Method and device for filtrating sewage fluid |
| TW90121262A TWI233372B (en) | 2000-09-05 | 2001-08-29 | Method and device for filtering polluted liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000268811A JP3539680B2 (en) | 2000-09-05 | 2000-09-05 | Filtration method and apparatus for wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002079012A JP2002079012A (en) | 2002-03-19 |
| JP3539680B2 true JP3539680B2 (en) | 2004-07-07 |
Family
ID=18755534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000268811A Expired - Lifetime JP3539680B2 (en) | 2000-09-05 | 2000-09-05 | Filtration method and apparatus for wastewater |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3539680B2 (en) |
| AU (1) | AU2001280114A1 (en) |
| TW (1) | TWI233372B (en) |
| WO (1) | WO2002020123A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4311559B2 (en) | 2004-12-17 | 2009-08-12 | ジャパン・フィールド株式会社 | Apparatus for removing precipitates in surface treatment liquid |
| JP4620599B2 (en) * | 2006-02-06 | 2011-01-26 | アクトファイブ株式会社 | Foreign matter removal processing device |
| JPWO2009050783A1 (en) * | 2007-10-16 | 2011-02-24 | ジャパン・フィールド株式会社 | Filtration method and apparatus for waste liquid |
| JP4841538B2 (en) * | 2007-11-30 | 2011-12-21 | 野村マイクロ・サイエンス株式会社 | Filtration method and filtration device |
| JP5075717B2 (en) * | 2008-04-03 | 2012-11-21 | 鹿島建設株式会社 | Waste soil treatment equipment |
| JP5586100B2 (en) * | 2011-10-27 | 2014-09-10 | ジャパン・フィールド株式会社 | Filtration method and apparatus for waste liquid |
| CN103994639B (en) * | 2014-06-06 | 2016-08-24 | 江苏洽爱纳机械有限公司 | A kind of drying means of material |
| CN109045797B (en) * | 2018-09-28 | 2023-10-03 | 深圳市宝美新能源有限公司 | Slide type automatic sewage disposal equipment |
| CN113041689A (en) * | 2021-04-02 | 2021-06-29 | 沧州信联化工有限公司 | Reduced pressure filtering device for tetramethylammonium hydroxide production and use method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59183822A (en) * | 1983-04-05 | 1984-10-19 | Mitsui Toatsu Chem Inc | Automatic sample delivering device |
| JPH03151008A (en) * | 1989-11-07 | 1991-06-27 | Kanegafuchi Chem Ind Co Ltd | Filter-drier by vibration and fluidization |
| JPH05253461A (en) * | 1992-03-10 | 1993-10-05 | Chiyoda Kizai Kk | Forcibly feeding device for liquid chemicals |
| KR0120732B1 (en) * | 1995-05-13 | 1997-10-22 | 박세준 | Automatic air pressure pump |
| JP4097107B2 (en) * | 1999-06-03 | 2008-06-11 | 株式会社日本製鋼所 | Grinding fluid grindstone removal method and apparatus |
-
2000
- 2000-09-05 JP JP2000268811A patent/JP3539680B2/en not_active Expired - Lifetime
-
2001
- 2001-08-23 WO PCT/JP2001/007201 patent/WO2002020123A1/en active Application Filing
- 2001-08-23 AU AU2001280114A patent/AU2001280114A1/en not_active Abandoned
- 2001-08-29 TW TW90121262A patent/TWI233372B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002079012A (en) | 2002-03-19 |
| AU2001280114A1 (en) | 2002-03-22 |
| WO2002020123A1 (en) | 2002-03-14 |
| TWI233372B (en) | 2005-06-01 |
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