JPH0725271Y2 - Wastewater treatment equipment - Google Patents
Wastewater treatment equipmentInfo
- Publication number
- JPH0725271Y2 JPH0725271Y2 JP1989116796U JP11679689U JPH0725271Y2 JP H0725271 Y2 JPH0725271 Y2 JP H0725271Y2 JP 1989116796 U JP1989116796 U JP 1989116796U JP 11679689 U JP11679689 U JP 11679689U JP H0725271 Y2 JPH0725271 Y2 JP H0725271Y2
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- Prior art keywords
- tank
- hollow
- waste water
- wastewater
- hollow rotating
- Prior art date
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Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、産業廃水中に含まれる、有機物や有機ハロゲ
ン等の有害汚染物質を除去する装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a device for removing harmful pollutants such as organic substances and organic halogens contained in industrial wastewater.
［従来の技術］ ドライクリーニング等を行った後の廃水には、トリクロ
ロエチレン、テトラクロロエチレン、1.1.1−トリクロ
ロエタン等の有機ハロゲンが溶解しており、これら有害
汚染物質を含んだ廃水が地下水、廃水路中に混入すると
環境汚染の原因となる。このため、これらを除去する技
術としてつぎのものがある。[Prior Art] Organic halogen such as trichlorethylene, tetrachloroethylene, 1.1.1-trichloroethane, etc. is dissolved in the wastewater after dry cleaning, etc., and wastewater containing these harmful pollutants is used in groundwater and wastewater channels. If it is mixed in, it will cause environmental pollution. Therefore, there are the following techniques for removing them.
（ａ）第２図に示す曝気式の廃水処理装置Ｂは、タンク
100に廃水200を満たし、下部より圧縮空気をノズル300
から強制的に送り込み、圧縮空気の膨脹を利用して、廃
水200を攪拌し、有機ハロゲンを気化させ分別する。な
お、110は排気口、120は排水口、130は廃液供給口、310
はエアーコンプレッサーである。(A) The aeration-type wastewater treatment device B shown in FIG.
Fill 100 with wastewater 200, and use compressed air from the bottom to nozzle 300
Is forcibly sent from, and the expansion of the compressed air is used to stir the wastewater 200 to vaporize and separate the organic halogen. In addition, 110 is an exhaust port, 120 is a drain port, 130 is a waste liquid supply port, 310
Is an air compressor.
（ｂ）第３図に示す充填塔向流接触式の廃水処理装置Ｃ
は、廃水200をシャワー状に除去器500にふりかけ、上部
に取付けた排気ファン600で外気610を充填塔700の外周
から取り込み、外気610が除去器500の間を通過する際
に、廃水200中に含まれる有機ハロゲンを気化させ分別
する。なお、710は排気口、720は排水口、730は外気取
入れ口、210は洗浄済み廃液である。(B) Packed tower countercurrent contact type wastewater treatment device C shown in FIG.
Is sprinkled with the waste water 200 on the remover 500 in a shower shape, the outside air 610 is taken in from the outer periphery of the packed tower 700 by the exhaust fan 600 attached to the upper part, and when the outside air 610 passes between the removers 500, The organic halogen contained in is vaporized and separated. In addition, 710 is an exhaust port, 720 is a drain port, 730 is an outside air intake port, and 210 is a washed waste liquid.
［考案が解決しようとする課題］ しかるに、従来の技術はつぎのような欠点がある。[Problems to be Solved by the Invention] However, the conventional techniques have the following drawbacks.
廃水処理装置Ｂは、多量の圧縮空気を必要とする。また
処理済み廃液が混じり合うので処理効率が悪い。The wastewater treatment device B requires a large amount of compressed air. In addition, the treated waste liquid mixes with each other, resulting in poor treatment efficiency.
廃水処理装置Ｃは、高い効率を得ようとすると除去器50
0が大きくなり、装置全体が大型化する。The wastewater treatment system C uses the eliminator 50 to obtain high efficiency.
The value of 0 increases, and the size of the entire device increases.
本考案の目的は、小型で、処理効率が良い、廃水処理装
置の提供にある。An object of the present invention is to provide a wastewater treatment device which is compact and has high treatment efficiency.
［課題を解決するための手段］ 上記目的を達成するため、本考案は、処理槽と、上端部
が槽外となるように、前記処理槽に回転自在に支持され
る中空回転軸と、側壁に多数のノズルを周設し、上端部
を前記中空回転軸に連結して前記処理槽内の上部中央に
位置する中空回転体と、前記中空回転軸を介して、有機
ハロゲン化合物を含んだ廃水を前記中空回転体へ供給す
る廃水供給手段と、前記中空回転体を前記中空回転軸と
ともに高速回転させる回転付勢手段と、槽上壁に開口す
る排気口を有する、槽内から槽外へ通じる排気通路と、
該排気通路中に配され、前記有機ハロゲン化合物を界面
吸着させるための吸着材を詰めた充填筒塔と、前記中空
回転体より上方で前記槽上壁の下方に、前記排気口を包
囲する様に配設される円盤状の邪魔板と、外気を前記処
理槽内に導入し、充填筒塔を通して大気中に放出する気
圧差付与手段と、前記有機ハロゲン化合物を除去した廃
水を復水して回収する処理済み廃水回収手段とを備え
る。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a treatment tank, a hollow rotary shaft rotatably supported by the treatment tank so that the upper end portion is outside the tank, and a side wall. A large number of nozzles are provided around the hollow rotating body located at the center of the upper part in the treatment tank by connecting the upper end to the hollow rotating shaft, and wastewater containing an organohalogen compound via the hollow rotating shaft. To the hollow rotating body, a rotating biasing means for rotating the hollow rotating body at a high speed together with the hollow rotating shaft, and an exhaust port opening to the upper wall of the tank, which communicates from the inside of the tank to the outside of the tank. Exhaust passage,
A packed cylinder column disposed in the exhaust passage and packed with an adsorbent for adsorbing the organic halogen compound at the interface, and surrounding the exhaust port below the tank upper wall above the hollow rotor. A disk-shaped baffle arranged in, the outside air is introduced into the treatment tank, a pressure difference providing means for releasing into the atmosphere through a packed column, and the waste water from which the organic halogen compound has been removed is condensed. And a treated wastewater recovery means for recovery.
［作用および考案の効果］ 請求項１について （作用） 回転付勢手段により、中空回転体を中空回転軸とともに
高速回転させ、中空回転軸を介して有機ハロゲン化合物
を含んだ廃水を中空回転体へ供給すると、廃水は遠心力
によりノズルからシャワー状に槽内に噴出する。[Action and Effect of Invention] (Claim 1) (Action) The rotating biasing means causes the hollow rotating body to rotate at high speed together with the hollow rotating shaft, and the wastewater containing the organic halogen compound is passed through the hollow rotating shaft to the hollow rotating body. When supplied, the waste water is spouted from the nozzle into the tank like a shower by centrifugal force.
気圧差付与手段は、外気を処理槽内に導入し、充填筒塔
を通して大気中に放出する。The atmospheric pressure difference providing means introduces outside air into the processing tank and discharges it into the atmosphere through the packed column.
シャワー状の廃水が外気と攪拌されるので有機ハロゲン
化合物は気化し、槽内から槽外へ通じる排気通路中に配
した吸着材により界面吸着し、無害となった空気は槽外
へ出る。Since the shower-like waste water is agitated with the outside air, the organic halogen compounds are vaporized and adsorbed at the interface by the adsorbent arranged in the exhaust passage leading from the inside of the tank to the outside of the tank, and the harmless air goes out of the tank.
処理済み廃水回収手段は、有機ハロゲン化合物が除去さ
れたシャワー状の廃水を復水して回収する。The treated wastewater recovery means condenses and recovers the shower-shaped wastewater from which the organic halogen compound has been removed.
（効果） 有機ハロゲン化合物を含んだ廃水を中空回転体のノズル
からシャワー状に槽内に噴出して導入した外気と接触さ
せているので、有機ハロゲン化合物を効率良く気化させ
て処理済み廃水中の有機ハロゲン化合物の濃度を下げる
事ができ、廃水処理装置は小型でも廃水処理能力に優れ
る。(Effect) Since the wastewater containing the organic halogen compound is sprayed from the nozzle of the hollow rotary body into the tank in a shower shape and is brought into contact with the outside air introduced, the organic halogen compound is efficiently vaporized to remove the wastewater in the treated wastewater. The concentration of organic halogen compounds can be lowered, and the wastewater treatment equipment is excellent in wastewater treatment capacity even though it is small.
邪魔板により、水分が充填筒塔内に浸入する事が防止で
き、水分の付着による吸着材の詰まりが防止できる。The baffle plate can prevent water from entering the packed column tower, and can prevent clogging of the adsorbent due to water adhesion.
［実施例］ 本考案の一実施例を第１図に基づき説明する。[Embodiment] An embodiment of the present invention will be described with reference to FIG.
廃水処理装置Ａは、底が漏斗状になった略砲弾状の処理
槽１を備える。この処理槽１内の上部中央には回転噴出
体である中空回転体２が配されている。この中空回転体
２は、上端部31が槽外10aに位置する中空回転軸３の下
端部32に連結され、槽外10aに配される回転付勢手段６
により中空回転軸３とともに回転する。また、前記処理
槽１の上には槽上壁11を貫いて、有機ハロゲンを含有し
た廃水４を、前記中空回転体２に供給する廃水供給手段
５が配設されている。一方、槽内10から槽外10aへの排
気通路12中には有機ハロゲン等の有害物質を界面吸着さ
せるための吸着材である活性炭を詰めた充填筒塔７が配
されている。The wastewater treatment apparatus A includes a substantially shell-shaped treatment tank 1 having a funnel-shaped bottom. At the center of the upper part of the processing tank 1, a hollow rotating body 2 which is a rotating jet body is arranged. The hollow rotating body 2 has its upper end 31 connected to the lower end 32 of the hollow rotary shaft 3 located outside the tank 10a, and has a rotation urging means 6 arranged outside the tank 10a.
Thus, the hollow rotary shaft 3 rotates together. Further, a wastewater supply means 5 is provided above the processing tank 1 to penetrate the tank upper wall 11 and supply the wastewater 4 containing an organic halogen to the hollow rotating body 2. On the other hand, in the exhaust passage 12 from the inside of the tank 10 to the outside of the tank 10a, a packed column 7 packed with activated carbon as an adsorbent for adsorbing harmful substances such as organic halogen at the interface is arranged.
廃水処理装置Ａの気圧差付与手段８は、シャワー状廃水
41と外気81とが混ざった混合ガス82を前記充填筒塔７か
ら排出させる排風機83と、外気81を導入する送風機84と
により構成されている。また、この廃水処理装置Ａで
は、処理済み廃水94を、処理済み廃水回収手段９により
復水し、捕集を行なっている。The atmospheric pressure difference providing means 8 of the wastewater treatment device A is a shower-like wastewater.
It is composed of an air blower 83 that discharges a mixed gas 82 in which 41 and the outside air 81 are mixed from the packed cylinder tower 7, and a blower 84 that introduces the outside air 81. Further, in this wastewater treatment device A, the treated wastewater 94 is condensed by the treated wastewater recovery means 9 and is collected.
処理槽１（耐蝕金属製）は、上部円筒部（高さ30cm、直
径40cm）が設置脚13で固定されている。前記槽上壁11の
中心には軸受取付穴14が開けられ、中心より外れて排気
口15が開けられている。The processing tank 1 (made of corrosion-resistant metal) has an upper cylindrical portion (height 30 cm, diameter 40 cm) fixed by installation legs 13. A bearing mounting hole 14 is formed in the center of the tank upper wall 11, and an exhaust port 15 is formed off the center.
中空回転体２（略円筒状の金属製）は、上端部21が径小
に、下端部22が径大（直径70mm）に形成されている。前
記中空回転軸３の下端部32は、この中空回転体２の上端
部21に差し込まれている。さらに、中空回転体２の前記
下端部22の側壁には等間隔に多数個、ノズル23が周設さ
れている。The hollow rotating body 2 (made of a substantially cylindrical metal) has an upper end portion 21 having a small diameter and a lower end portion 22 having a large diameter (diameter 70 mm). The lower end 32 of the hollow rotary shaft 3 is inserted into the upper end 21 of the hollow rotary body 2. Further, a large number of nozzles 23 are provided around the side wall of the lower end portion 22 of the hollow rotating body 2 at equal intervals.
中空回転軸３は、円筒状の金属パイプで形成されてい
る。この中空回転軸３は前記軸受取付穴14に取付けられ
た軸受61により中央部33が気密的に軸止されている。The hollow rotary shaft 3 is formed of a cylindrical metal pipe. The central portion 33 of the hollow rotary shaft 3 is hermetically fixed by a bearing 61 mounted in the bearing mounting hole 14.
廃水４は、有害物質である有機ハロゲンを含有している
産業排水である。なお、ノズル23が詰まらないように異
物は予め取り除かれている。The wastewater 4 is industrial wastewater containing organic halogen which is a harmful substance. The foreign matter is removed in advance so that the nozzle 23 is not clogged.
廃水供給手段５は、廃水タンク51に、配管52、コック5
3、回転ジョイント54を連設してなる。この廃水供給手
段５により、前記廃水４は中空回転軸３を通って中空回
転体２内に入る。The wastewater supply means 5 includes a wastewater tank 51, a pipe 52, and a cock 5.
3. The rotary joint 54 is connected in series. By this waste water supply means 5, the waste water 4 passes through the hollow rotating shaft 3 and enters the hollow rotating body 2.
回転付勢手段６は、モータ62の回転トルクを駆動ベルト
63で中空回転軸３に伝え、中空回転体２を高速回転させ
ている。The rotation urging means 6 applies the rotation torque of the motor 62 to the drive belt.
At 63, it is transmitted to the hollow rotary shaft 3 to rotate the hollow rotary body 2 at a high speed.
充填筒塔７は、略円筒状を呈し、槽上壁11上に立設して
いる。The packed column 7 has a substantially cylindrical shape and stands on the tank upper wall 11.
排風機83は、排気口15から処理槽１内の混合ガス82を吸
引し、充填筒塔７に送り込んでいる。The exhaust fan 83 sucks the mixed gas 82 in the processing tank 1 from the exhaust port 15 and sends it to the packed column 7.
送風機84は、処理槽１の外側に設置され、送風パイプ85
を前記処理槽１内の略中央まで差込んでいる。この送風
パイプ85は先端開口86がラッパ状とされ開口86は下向き
である。The blower 84 is installed outside the processing tank 1 and has a blower pipe 85.
Is inserted to approximately the center of the processing tank 1. The blower pipe 85 has a tip end opening 86 shaped like a trumpet, and the opening 86 faces downward.
廃水回収手段９は、邪魔板91、処理済み廃水回収タンク
92、および漏斗状面93で構成される。前記邪魔板91は円
盤状を呈し、前記排気口15を包囲するように槽上壁11の
内側に配設されている。前記回収タンク92は前記処理槽
１の漏斗状部に取設されている。The wastewater recovery means 9 includes a baffle plate 91 and a treated wastewater recovery tank.
92, and a funnel-shaped surface 93. The baffle plate 91 has a disk shape and is arranged inside the tank upper wall 11 so as to surround the exhaust port 15. The recovery tank 92 is attached to the funnel-shaped portion of the processing tank 1.
つぎに、廃水処理装置Ａの作動を説明する。Next, the operation of the wastewater treatment device A will be described.
1.送風機84で外気81を処理槽１内に送り込み、同時に排
風機83で吸引する。1. The blower 84 sends the outside air 81 into the processing tank 1, and at the same time, the blower 83 sucks it.
2.回転付勢手段６により中空回転軸３および中空回転体
２を高速回転（1700rpm）させるとともに、コック53を
開いて廃水４を中空回転体２内に導く。2. While rotating the hollow rotating shaft 3 and the hollow rotating body 2 at high speed (1700 rpm) by the rotation urging means 6, the cock 53 is opened to guide the wastewater 4 into the hollow rotating body 2.
3.廃水４は重力により中空回転体２内に入り、遠心力に
より、ノズル23からシャワー状廃水41となって処理槽１
内に飛散する。3. The wastewater 4 enters the hollow rotating body 2 by gravity, and becomes centrifugal shower water to become shower-like wastewater 41 from the nozzle 23 and the treatment tank 1
Scatter inside.
4.外気81と、このシャワー状廃水41とが攪拌されるの
で、有機ハロゲン等の有害物質は効率良く気化する。4. Since the outside air 81 and the shower-like wastewater 41 are agitated, harmful substances such as organic halogen are efficiently vaporized.
5.邪魔板91により、水分は水滴となって下方に分別さ
れ、有機ハロゲン等の有害物質だげが排気口15に達す
る。5. By the baffle plate 91, the moisture becomes water droplets and is separated downward, and harmful substances such as organic halogens reach the exhaust port 15.
6.充填筒塔７内の活性炭により有機ハロゲン等の有害物
質が除去され、無害となった空気は大気中に放出され
る。また、処理済み廃水94は回収タンク92に溜る。6. The activated carbon in the packed column 7 removes harmful substances such as organic halogens and the harmless air is released into the atmosphere. In addition, the treated wastewater 94 accumulates in the recovery tank 92.
本実施例の廃水処理装置Ａの作用効果を述べる。The effects of the wastewater treatment system A of this embodiment will be described.
（１）邪魔板91により、有機ハロゲン等の有害物質だけ
均一的に排気口15に誘導でき、廃水処理を連続的に行う
ことができる。邪魔板91が無い場合は、水分の付着によ
る活性炭の詰りが発生しやすい。(1) By the baffle plate 91, only harmful substances such as organic halogen can be uniformly guided to the exhaust port 15, and wastewater treatment can be continuously performed. If the baffle plate 91 is not provided, clogging of activated carbon due to water adhesion is likely to occur.
（２）廃水供給手段５は、重力式であるので廃水処理装
置Ａの構造の複雑化を招かず、また廃水の供給のための
動力が不要である。(2) Since the wastewater supply means 5 is of the gravity type, the structure of the wastewater treatment device A is not complicated, and power for supplying the wastewater is unnecessary.
（３）第３図に示す充填筒向流接触式の廃水処理装置Ｃ
に比べ、約半分の容積で同等の処理能力が得られる。な
お、廃水処理能力試験は、対象廃水としてトリクロロエ
チレン廃水を用い、送風機84による送風風量を1.9m3/mi
nとし、中空回転体２の回転数を1700rpmとし、湿度67
％、気温23℃の環境条件のもとで行い、その結果を第１
表に示す。(3) Countercurrent flow contact type waste water treatment device C shown in FIG.
Compared with, the equivalent processing capacity can be obtained with about half the volume. In the wastewater treatment capacity test, trichlorethylene wastewater was used as the target wastewater, and the blown air volume by the blower 84 was 1.9 m 3 / mi.
n, the rotation speed of the hollow rotor 2 is 1700 rpm, and the humidity is 67
%, The temperature is 23 ℃, and the result is the first
Shown in the table.
本考案は上記実施例以外につぎの実施態様を含む。 The present invention includes the following embodiments in addition to the above embodiments.
a.気圧差付与手段は、送風機または排風機のどちらか一
方であっても良い。a. The air pressure difference providing means may be either a blower or an exhaust fan.
b.外気を加熱して送り込んでも良い。その場合の加熱温
度範囲は40℃〜80℃が好適である。b. You may heat the outside air and send it in. In that case, the heating temperature range is preferably 40 ° C to 80 ° C.
c.吸着材は活性炭に限定されず、気化した有機ハロゲン
を他の分解触媒で界面吸着させても良い。c. The adsorbent is not limited to activated carbon, and vaporized organic halogen may be interfacially adsorbed by another decomposition catalyst.
d.回転噴出体から遠心力により噴出する廃水は微粒子状
であっても良い。d. Waste water ejected from the rotating ejector by centrifugal force may be fine particles.
e.送風パイプ85、処理済み廃水回収タンク92の配設位置
は限定されない。e. The positions of the blower pipe 85 and the treated wastewater recovery tank 92 are not limited.
f.処理済み廃水回収タンク92を設けずに、連続的に排水
しても良い。f. Continuous drainage may be performed without providing the treated wastewater recovery tank 92.
g.廃水タンク51を設けずに、ポンプ等で廃水４を送るよ
うにしても良い。g. The waste water 4 may be sent by a pump or the like without providing the waste water tank 51.
第１図は本考案の一実施例を示す廃水処理装置の原理図
である。 第２図、第３図は従来の廃水処理装置の原理図である。 図中 １……処理槽、２……中空回転体（回転噴出
体）、３……中空回転軸（回転軸）、４……廃水、５…
…廃水供給手段、６……回転付勢手段、７……充填筒
塔、８……気圧差付与手段、９……処理済み廃水回収手
段、10……槽内、10a……槽外、11……槽上壁（槽
壁）、12……排気通路、31……上端部、32……下端部、
81……外気、94……処理済み廃水、Ａ……廃水処理装置FIG. 1 is a principle diagram of a wastewater treatment apparatus showing an embodiment of the present invention. 2 and 3 are principle diagrams of a conventional wastewater treatment device. In the figure, 1 ... Treatment tank, 2 ... Hollow rotating body (rotating jet), 3 ... Hollow rotating shaft (rotating shaft), 4 ... Waste water, 5 ...
... Waste water supply means, 6 ... Rotational biasing means, 7 ... Packing column tower, 8 ... Atmospheric pressure difference applying means, 9 ... Treated waste water collecting means, 10 ... Inside tank, 10a ... Outside tank, 11 …… Vessel upper wall (vessel wall), 12 …… Exhaust passage, 31 …… Upper end, 32 …… Lower end,
81 …… Outside air, 94 …… Treatment wastewater, A …… Wastewater treatment equipment
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭50−66959（ＪＰ，Ａ) 特開 昭62−277194（ＪＰ，Ａ) 特開 昭61−200837（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-50-66959 (JP, A) JP-A-62-277194 (JP, A) JP-A-61-200837 (JP, A)
Claims (1)
持される中空回転軸と、 側壁に多数のノズルを周設し、上端部を前記中空回転軸
に連結して前記処理槽内の上部中央に位置する中空回転
体と、 前記中空回転軸を介して、有機ハロゲン化合物を含んだ
廃水を前記中空回転体へ供給する廃水供給手段と、 前記中空回転体を前記中空回転軸とともに高速回転させ
る回転付勢手段と、 槽上壁に開口する排気口を有する、槽内から槽外へ通じ
る排気通路と、 該排気通路中に配され、前記有機ハロゲン化合物を界面
吸着させるための吸着材を詰めた充填筒塔と、 前記中空回転体より上方で前記槽上壁の下方に、前記排
気口を包囲する様に配設される円盤状の邪魔板と、 外気を前記処理槽内に導入し、充填筒塔を通して大気中
に放出する気圧差付与手段と、 前記有機ハロゲン化合物を除去した廃水を復水して回収
する処理済み廃水回収手段とを備えてなる廃水処理装
置。1. A processing tank, a hollow rotating shaft rotatably supported by the processing tank so that the upper end is outside the tank, and a plurality of nozzles provided around a side wall, and the upper end is the hollow rotating shaft. A hollow rotating body which is connected to a shaft and is located at the center of the upper part in the treatment tank, a waste water supply means for supplying waste water containing an organic halogen compound to the hollow rotating body via the hollow rotating shaft, and the hollow Rotation urging means for rotating the rotating body at a high speed together with the hollow rotary shaft, an exhaust passage having an exhaust port opening on the upper wall of the tank and communicating from the inside of the tank to the outside of the tank, and the organic halogen disposed in the exhaust passage. A packed column tower packed with an adsorbent for adsorbing a compound at an interface, and a disc-shaped baffle plate arranged so as to surround the exhaust port above the hollow rotor and below the tank upper wall. , Introduce outside air into the treatment tank, and pass through the packed column A pressure difference providing means for releasing into the air, the waste water to remove the organic halogen compound is a condensate composed of a treated waste water recovery means for recovering waste water treatment apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989116796U JPH0725271Y2 (en) | 1989-10-04 | 1989-10-04 | Wastewater treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989116796U JPH0725271Y2 (en) | 1989-10-04 | 1989-10-04 | Wastewater treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0356695U JPH0356695U (en) | 1991-05-30 |
| JPH0725271Y2 true JPH0725271Y2 (en) | 1995-06-07 |
Family
ID=31665059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989116796U Expired - Fee Related JPH0725271Y2 (en) | 1989-10-04 | 1989-10-04 | Wastewater treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0725271Y2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5066959A (en) * | 1973-10-23 | 1975-06-05 | ||
| JPS61200837A (en) * | 1985-03-01 | 1986-09-05 | Ebara Infilco Co Ltd | Treatment of exhaust gas |
| JPS62277194A (en) * | 1986-05-26 | 1987-12-02 | Hiroya Inaba | Solvent separator by multi-stage aeration |
-
1989
- 1989-10-04 JP JP1989116796U patent/JPH0725271Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0356695U (en) | 1991-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |