JPH0753687Y2 - Upflow moving bed filter - Google Patents
Upflow moving bed filterInfo
- Publication number
- JPH0753687Y2 JPH0753687Y2 JP1989075630U JP7563089U JPH0753687Y2 JP H0753687 Y2 JPH0753687 Y2 JP H0753687Y2 JP 1989075630 U JP1989075630 U JP 1989075630U JP 7563089 U JP7563089 U JP 7563089U JP H0753687 Y2 JPH0753687 Y2 JP H0753687Y2
- Authority
- JP
- Japan
- Prior art keywords
- partition
- water
- filtered
- tank
- filter
- 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.)
- Expired - Lifetime
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Description
【考案の詳細な説明】 ［産業上の利用分野］ この考案は、濾過層を構成する濾過砂を下方に移動させ
ながらこれと向流的に原水を導入し、濾過砂層を上向き
に通過する間にこれを濾過して、濾過水を上方から溢流
させる一方、汚染した濾過砂は上方に循環させて洗浄再
使用するようにした上向流移動床式濾過装置の改良に関
するものである。[Detailed Description of the Invention] [Industrial field of application] In this invention, raw water is introduced countercurrently with the filter sand constituting the filter bed while moving downward, and while the filter sand is passing upward through the filter sand layer. The present invention relates to an improvement in an upflow moving bed type filtration device in which filtered water is overflowed from above and contaminated filter sand is circulated upward to be washed and reused.
［従来の技術］ 上向流移動床式濾過装置そのものは従来公知であり、こ
れら公知の上向流濾過装置にあっては、原水は濾過砂層
内に開口する流入管から槽内に導入され、この濾過砂層
中を上昇する間に浮遊物が除去され、濾過砂層の上面を
通過してさらに上昇し槽の上部から濾過水として排出さ
れるようになっている。[Prior Art] Upflow moving bed filtration apparatuses themselves are conventionally known, and in these known upflow filtration apparatuses, raw water is introduced into a tank from an inflow pipe opening into a filter sand layer, Floating matter is removed while ascending in the filter sand layer, passes through the upper surface of the filter sand layer, further rises, and is discharged as filtered water from the upper part of the tank.
また、原水中の浮遊物で汚染された濾過砂は、下部から
エアリフトポンプで揚砂されながら気体攪拌効果により
濾過砂中に付着した浮遊物（SS）を分離し、このSSを系
外に排出する機構となっている。The filter sand contaminated with suspended solids in the raw water is lifted from the bottom by an air lift pump to separate suspended solids (SS) adhering to the filtered sand due to the gas stirring effect, and discharge this SS out of the system. It is a mechanism to do.
一方、濾過砂は重いので沈殿して濾過砂層の上部に戻る
が、その過程において濾過水の一部でさらに洗浄される
ようになっている。（特公昭56−51808,特公昭59−3800
6,実公昭59−20334等参照） ［この考案が解決しようとする課題］ 第３図は従来公知の上向流濾過装置を概念的にに示した
ものであり、原水ａは下部から濾過砂層内に供給され、
濾過された水は処理水ｂとして次工程へ、また、一部は
エアリフトポンプで揚砂された汚砂を洗浄・分離するた
めs1の流れを経て洗浄排水ｃとなる。On the other hand, since the filter sand is heavy, it precipitates and returns to the upper part of the filter sand layer, but in the process, it is further washed with a part of the filter water. (Japanese Patent Publication 56-51808, Japanese Patent Publication 59-3800
6, see Jikken Sho 59-20334, etc.) [Problems to be Solved by the Invention] FIG. 3 conceptually shows a conventionally known upflow filtration device. Is supplied within
The filtered water is used as treated water b for the next step, and a part of it is used as a cleaning waste water c through a flow of s 1 for cleaning and separating dirty sand lifted by an air lift pump.
洗浄水量は、第３図に示す水位差ｈにより決まるが、こ
の水位差ｈは設定された原水量と洗浄排水量に対しては
一定の値を保つが、原水量が変化すればｈも変化し、原
水量がゼロになればｈ＝０となる。The amount of wash water is determined by the water level difference h shown in Fig. 3. This water level difference h maintains a constant value for the set raw water amount and wash drainage amount, but if the raw water amount changes, h also changes. If the amount of raw water becomes zero, h = 0.
したがって、リンシング機構を通過する洗浄水の速度は
設定値に対し、相対的なs1又はs2の流れを生ずる。Therefore, the velocity of the wash water passing through the rinsing mechanism causes a flow of s 1 or s 2 relative to the set value.
特に、原水ポンプ停止後に再起動する場合に、ｈ＝０か
ら設定された水位ｈ＝hnまで移行する際、大きなs2が発
生し、洗浄排水となるべきSSを含んだ汚水が濾過水ゾー
ンに流入するので処理水の水質が悪化するという問題点
があった。In particular, in the case of restarting after stopping the raw water pump, when shifting from h = 0 to a set water level h = h n, large s 2 is generated, containing the washing and drainage becomes to SS sewage filtrate zone However, there is a problem that the quality of the treated water deteriorates because it flows into the.
この考案は、上記問題点を解決し運転条件の如何に拘ら
ず常に濾過された水を集水可能とし、高い水質の処理水
が安定して得られるような移動床濾過装置を提供しよう
とするものである。This invention solves the above-mentioned problems and intends to provide a moving bed filtration device that can constantly collect filtered water regardless of operating conditions and stably obtain treated water of high water quality. It is a thing.
なお、下向流の砂濾過装置においては、例えば、実公昭
58−047931号公報および実公昭59−028654号公報に示さ
れるように、タンク内に設けられた筒体と該筒体内に設
けられた板材とで、原水と洗浄水とを分離するようにし
たものが知られているが、これは、濾過前の原水と洗浄
水とを分離するするにすぎず、上向流の砂濾過装置にお
いて、濾過後の処理水系と洗浄水系とを分離し、処理水
の水質悪化を防止する手段は未だ知られていない。It should be noted that in a downflow sand filter, for example,
As disclosed in Japanese Patent Publication No. 58-047931 and Japanese Utility Model Publication No. 59-028654, raw water and washing water are separated by a tubular body provided in a tank and a plate material provided in the tubular body. However, this is only for separating the raw water and the washing water before the filtration, and in the upward flow sand filter, the treated water system and the washing water system after the filtration are separated and treated. The means to prevent the deterioration of water quality is not yet known.
［課題を解決するための手段］ この考案は、上記課題を解決するための手段を提供しよ
うとするものであって、請求項１）の考案は、タンク１
内に濾過砂を収容して濾過砂層２を形成し該濾過砂層２
内に原水導入管３と濾過砂循環用エアリフトポンプ４を
配設してなる上向流移動床式濾過装置において、タンク
１内上部に、該タンク１と同心で下端が前記濾過砂層２
内に没入する仕切筒５を垂直方向に取付け、該仕切筒５
の内部上方に水平方向の仕切板６を設けてその上部に処
理水トラフ12を形成し、前記垂直方向の仕切板５と前記
濾過砂層２とによってタンク１上部の径方向内外を濾過
水室７と洗浄水室８とに区分し、かつ、前記仕切板６に
よって仕切筒５内の上下を処理水トラフ12と洗浄水室８
とに区分することにより、洗浄水系と濾過水系とを分離
したことを特徴とする上向流移動床式濾過装置を要旨と
し、請求項２）の考案は、さらに前記仕切筒５内に、該
仕切筒５と同心の小径仕切筒5aを配設し、該小径仕切筒
5aの上端は濾過砂層２の上面より上方に突出させ下端は
濾過砂層２内に没入させると共に、エアリフトポンプ４
の外周に前記小径仕切筒5aの上方に位置して沈砂流入防
止傘4aを配設してなるものである。[Means for Solving the Problems] This invention is intended to provide means for solving the above problems, and the invention of claim 1) provides a tank 1
The filter sand is housed in it to form a filter sand layer 2 and the filter sand layer 2
In an upward-flowing moving-bed type filtration device in which a raw water introduction pipe 3 and an air lift pump 4 for circulating filtered sand are disposed inside, an upper part of a tank 1 is concentric with the tank 1 and a lower end thereof is the filtered sand layer 2
The partition cylinder 5 that is immersed inside is mounted vertically, and the partition cylinder 5
A horizontal partition plate 6 is provided above the inside of the tank, and a treated water trough 12 is formed on the upper part thereof. The vertical partition plate 5 and the filter sand layer 2 are provided between the inside and outside of the tank 1 in the radial direction to filter water chamber 7. And a cleaning water chamber 8 and the upper and lower sides of the partition tube 5 are divided into the treated water trough 12 and the cleaning water chamber 8 by the partition plate 6.
The upflow moving bed type filtration device is characterized in that the washing water system and the filtered water system are separated by dividing into the above. A small-diameter partition cylinder 5a, which is concentric with the partition cylinder 5, is provided, and the small-diameter partition cylinder 5a is provided.
The upper end of 5a projects upward from the upper surface of the filter sand layer 2 and the lower end is immersed in the filter sand layer 2, and the air lift pump 4
A sand sediment inflow preventing umbrella 4a is disposed on the outer periphery of the above and above the small diameter partition cylinder 5a.
［実施例］ 第１図に示した実施例により請求項１）の考案の構成を
説明する。[Embodiment] The construction of the invention of claim 1) will be described with reference to the embodiment shown in FIG.
１は濾過水槽を構成するタンクであって、その内部には
濾過砂が収容され濾過砂層２を形成している。Reference numeral 1 is a tank constituting a filtered water tank, in which filtered sand is contained to form a filtered sand layer 2.
３は濾過すべき原水ａを導入するための原水導入管であ
って、その上端は前記濾過砂層２の下半部内に開口して
いる。この導入管３の上端開口部に面して原水分配傘９
が設けられている。Reference numeral 3 is a raw water introducing pipe for introducing the raw water a to be filtered, the upper end of which is opened in the lower half of the filter sand layer 2. The raw water distribution umbrella 9 faces the upper end opening of the introduction pipe 3.
Is provided.
前記タンク１の中心部には下部に傘状の濾過砂移動板13
を有するエアリフトポンプ４が立設されている。An umbrella-shaped filter sand moving plate 13 is provided at the bottom of the center of the tank 1.
The air lift pump 4 having is installed upright.
５は、タンク１と同心の仕切筒であって、タンク１内上
部に垂直方向に取付けられ、その下端は前記濾過砂層２
内に没入している。また、該仕切筒５の内部上方には水
平方向の仕切板６が設けられ、その上部に処理水トラフ
12が形成されている。Reference numeral 5 denotes a partition cylinder concentric with the tank 1, which is vertically attached to the upper part of the tank 1 and the lower end of which is the filter sand layer 2
Immersed in. Further, a horizontal partition plate 6 is provided above the inside of the partition cylinder 5, and a treated water trough is provided above the partition plate 6.
12 are formed.
すなわち、前記濾過砂層２と垂直方向の仕切筒５とによ
ってタンク１内上部の径方向内外を濾過水室７と洗浄水
室８とに区分し、また、前記水平方向の仕切板６によっ
て仕切筒５内の上下を処理水トラフ12と洗浄水室８とに
区分している。That is, the inside and outside of the tank 1 in the radial direction are divided into a filtered water chamber 7 and a wash water chamber 8 by the filter sand layer 2 and the vertical partition tube 5, and the horizontal partition plate 6 partitions the partition tube. The upper and lower parts of 5 are divided into a treated water trough 12 and a wash water chamber 8.
洗浄水室８はリンシング機構10を介して洗浄トラフ11に
連通している。The cleaning water chamber 8 communicates with a cleaning trough 11 via a rinsing mechanism 10.
エアリフトポンプ４の上端は洗浄トラフ11内に開口し、
空気流入管（図示せず）から供給される空気によって、
濾過砂層２の下部の汚染された濾過砂をポンプアップし
て前記洗浄トラフ11に排出するようになっている。The upper end of the air lift pump 4 opens into the cleaning trough 11,
By the air supplied from the air inflow pipe (not shown),
The contaminated filter sand under the filter sand layer 2 is pumped up and discharged to the cleaning trough 11.
濾過すべき原水ａは原水導入管３を経て分配傘９により
濾過砂層２の下部へ均一に分配され、上昇しながら濾過
される。濾過された原水の一部は濾過水室７を経て仕切
筒５の上端から処理水トラフ12内に溢流し、該処理水ト
ラフ12から処理水ｂとして排出され、他の一部は洗浄水
室８からリンシング機構10を経て、エアリフトポンプ４
で揚砂された汚砂の洗浄作用を果たした後、そのSS分と
共に洗浄トラフ11から洗浄排水ｃとして系外に排出され
るようになっている。The raw water a to be filtered is uniformly distributed to the lower part of the filter sand layer 2 by the distributor 9 through the raw water introducing pipe 3 and is filtered while rising. A part of the filtered raw water overflows from the upper end of the partition tube 5 into the treated water trough 12 through the filtered water chamber 7, and is discharged as treated water b from the treated water trough 12, while the other part is washed water chamber. 8 through the rinsing mechanism 10 to the air lift pump 4
After performing the cleaning action of the dirty sand lifted by the above, the wastewater c is discharged from the cleaning trough 11 out of the system together with the SS content.
また、エアリフトポンプ４で揚砂された汚砂はリンシン
グ機構10で洗浄された後、洗浄水室８内に落下し再び濾
過砂層２を形成する。The dirty sand lifted by the air lift pump 4 is washed by the rinsing mechanism 10 and then drops into the wash water chamber 8 to form the filter sand layer 2 again.
以上の作動において、洗浄水室８に至る濾過水の量の調
整は、処理水室７の溢流水位と洗浄トラフ11の上面水位
との水位差ｈにより決めるものとし、濾過砂の量（仕切
筒５内外の濾過砂層２の上面段差）および仕切筒５の径
を適当に選択して適正な水位差ｈを設定するものとす
る。In the above operation, the amount of filtered water reaching the washing water chamber 8 is adjusted by the water level difference h between the overflow water level of the treated water chamber 7 and the upper surface water level of the washing trough 11, and the amount of filtering sand (partition It is assumed that an appropriate water level difference h is set by appropriately selecting the diameters of the partition cylinder 5 and the upper surface step of the filter sand layer 2 inside and outside the cylinder 5.
第２図は、請求項２）の考案の実施例を示すものであっ
て、上記第１図に示した構成に加えて、前記仕切筒５内
に、該仕切筒５と同心の小径仕切筒5aを配設してなるも
のである。この小径仕切筒5aの上端は濾過砂層２の上面
より上方に突出し、下端は濾過砂層２内に没入してい
る。FIG. 2 shows an embodiment of the invention of claim 2). In addition to the configuration shown in FIG. 1, a small-diameter partition cylinder concentric with the partition cylinder 5 is provided in the partition cylinder 5. 5a is provided. The upper end of the small-diameter partition cylinder 5a projects upward from the upper surface of the filter sand layer 2, and the lower end is immersed in the filter sand layer 2.
また、エアリフトポンプ４の外周には、前記小径仕切筒
5aの上方に位置して、沈砂流入防止傘4aが配設されてい
る。Further, the small diameter partition cylinder is provided on the outer periphery of the air lift pump 4.
A sand sediment inflow prevention umbrella 4a is arranged above the 5a.
このように小径仕切筒5aを設けると、洗浄水室８内への
流入抵抗を減少させることができ、前記した処理水室７
の溢流水位と洗浄トラフ11の上面水位との水位差ｈを小
さくすることができるので、水量調節が容易となる。By providing the small-diameter partitioning cylinder 5a in this way, the inflow resistance into the wash water chamber 8 can be reduced, and the treated water chamber 7 described above can be reduced.
Since the water level difference h between the overflow water level and the upper surface water level of the cleaning trough 11 can be reduced, the water amount adjustment becomes easy.
［作用］ この考案の構成によれば、仕切筒5,仕切板６および濾過
砂層２によって、タンク１上部に独立した濾過水室７と
洗浄水室８が形成されるので、運転条件によって発生す
るエアリフトポンプ４からの汚水が濾過水中に混入する
ことがなく、運転管理が容易で、かつ良質の処理水が安
定して得られる。[Operation] According to the configuration of the present invention, since the partition cylinder 5, the partition plate 6 and the filter sand layer 2 form the independent filtered water chamber 7 and the washing water chamber 8 on the upper portion of the tank 1, they are generated depending on the operating conditions. The dirty water from the air lift pump 4 does not mix into the filtered water, the operation management is easy, and the treated water of good quality is stably obtained.
また、さらに仕切筒５内に小径仕切筒5aを設け、その上
方に沈砂流入防止傘4aを配設すれば、該小径仕切筒5a内
には濾過砂が堆積しないので、濾過水の洗浄水室８内へ
の流入抵抗を減少させることができるため、洗浄水量の
設定が容易となる。Further, if a small diameter partition cylinder 5a is further provided in the partition cylinder 5 and a sand settling prevention umbrella 4a is arranged above it, the filter sand will not be deposited in the small diameter partition cylinder 5a, so that the filtered water wash chamber Since the inflow resistance into the chamber 8 can be reduced, the amount of cleaning water can be easily set.
［効果］ この考案によれば、タンク１と同心の仕切筒５と該仕切
筒５内に設けられた仕切板６および濾過砂層２によって
タンク１上部に独立した濾過水室７と洗浄水室８を形成
し、洗浄水系と濾過水系とを分離したことにより、運転
条件の如何に拘らず処理水として常に濾過された水を集
水することができるから、原水供給ポンプの発停が多く
ても処理水質の悪化に結びつかず、常に良質の処理水が
安定して得られる効果がある。[Effects] According to the present invention, the partition tube 5 concentric with the tank 1, the partition plate 6 provided in the partition tube 5, and the filter sand layer 2 separate the filtered water chamber 7 and the washing water chamber 8 above the tank 1. By separating the wash water system and the filtered water system, it is possible to always collect the filtered water as the treated water regardless of the operating conditions. The quality of treated water does not deteriorate, and the quality of treated water is always stable.
また、さらに前記仕切筒５内に、該仕切筒５と同心の小
径仕切筒5aを配設し、該小径仕切筒5aの上端は濾過砂層
２の上面より上方に突出させ下端は濾過砂層２内に没入
させると共に、エアリフトポンプ４の外周に前記小径仕
切筒5aの上方に位置して沈砂流入防止傘4aを配設したこ
とにより、該小径仕切筒5a内には上方から濾過砂が沈下
堆積せず、濾過水の洗浄水室８内への流入抵抗を減少さ
せることができるため、洗浄水量の設定や調節が容易と
なる効果がある。Further, a small-diameter partition cylinder 5a which is concentric with the partition cylinder 5 is arranged in the partition cylinder 5, the upper end of the small-diameter partition cylinder 5a is projected above the upper surface of the filter sand layer 2, and the lower end is in the filter sand layer 2. In addition, by arranging a sand sediment inflow prevention umbrella 4a above the small diameter partition cylinder 5a on the outer periphery of the air lift pump 4, the filter sand is deposited and deposited from above in the small diameter partition cylinder 5a. Instead, the inflow resistance of the filtered water into the wash water chamber 8 can be reduced, so that the amount of wash water can be easily set and adjusted.
第１図および第２図はこの考案の実施例の縦断側面図、
第３図は従来例の説明図である。 1:タンク 2:濾過砂層 3:原水導入管 4:エアリフトポンプ 4a:沈砂流入防止傘 5:仕切筒 5a:小径仕切筒 6:仕切板 7:濾過水室 8:洗浄水室 9:分配傘 10:リンシング機構 11:洗浄トラフ 12:処理水トラフ1 and 2 are longitudinal side views of an embodiment of the present invention,
FIG. 3 is an explanatory diagram of a conventional example. 1: Tank 2: Filter sand layer 3: Raw water inlet pipe 4: Air lift pump 4a: Sand settling prevention umbrella 5: Partition cylinder 5a: Small diameter partition cylinder 6: Partition plate 7: Filtration water chamber 8: Wash water chamber 9: Distributor umbrella 10 : Rinse mechanism 11: Cleaning trough 12: Treated water trough
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 平３−15606（ＪＰ，Ｕ) 実開 昭54−11372（ＪＰ，Ｕ) 実公 昭59−20334（ＪＰ，Ｙ２) 実公 昭58−47931（ＪＰ，Ｙ２) 実公 昭59−28654（ＪＰ，Ｙ２) 実公 昭58−54177（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Flat 3-15606 (JP, U) Real deployment Sho 54-11372 (JP, U) Real public Sho 59-20334 (JP, Y2) Real public Sho 58- 47931 (JP, Y2) Actual public Sho 59-28654 (JP, Y2) Actual public Sho 58-54177 (JP, Y2)
Claims (2)
層（２）を形成し該濾過砂層（２）内に原水導入管
（３）と濾過砂循環用エアリフトポンプ（４）を配設し
てなる上向流移動床式濾過装置において、タンク（１）
内上部に、該タンク（１）と同心で下端が前記濾過砂層
（２）内に没入する仕切筒（５）を垂直方向に取付け、
該仕切筒（５）の内部上方に水平方向の仕切板（６）を
設けてその上部に処理水トラフ（12）を形成し、前記垂
直方向の仕切板（５）と前記濾過砂層（２）とによって
タンク（１）上部の径方向内外を濾過水室（７）と洗浄
水室（８）とに区分し、かつ、前記仕切板（６）によっ
て仕切筒（５）内の上下を処理水トラフ（12）と洗浄水
室（８）とに区分することにより、洗浄水系と濾過水系
とを分離したことを特徴とする上向流移動床式濾過装
置。1. A tank (1) containing filtered sand to form a filtered sand layer (2), and a raw water introducing pipe (3) and a filtered sand circulating air lift pump (4) in the filtered sand layer (2). An upflow moving bed type filtration device provided with a tank (1)
A partition cylinder (5), which is concentric with the tank (1) and whose lower end is immersed in the filter sand layer (2), is vertically attached to the inner upper part,
A horizontal partition plate (6) is provided above the inside of the partition cylinder (5), and a treated water trough (12) is formed on the upper part thereof, and the vertical partition plate (5) and the filter sand layer (2) are provided. The inside and outside in the radial direction of the upper part of the tank (1) are divided into a filtered water chamber (7) and a washing water chamber (8) by and the upper and lower sides of the partition tube (5) are treated water by the partition plate (6). An upflow moving bed type filtration device characterized in that a washing water system and a filtered water system are separated by dividing into a trough (12) and a washing water chamber (8).
の小径仕切筒（5a）を配設し、該小径仕切筒（5a）の上
端は濾過砂層（２）の上面より上方に突出させ下端は濾
過砂層（２）内に没入させると共に、エアリフトポンプ
（４）の外周に前記小径仕切筒（5a）の上方に位置して
沈砂流入防止傘（4a）を配設してなる請求項１）記載の
上向流移動床式濾過装置。2. A partition cylinder (5) is provided with a small-diameter partition cylinder (5a) concentric with the partition cylinder (5), and the upper end of the small-diameter partition cylinder (5a) is the upper surface of the filter sand layer (2). The upper part is projected upward and the lower end is immersed in the sand filter layer (2), and the sand inflow prevention umbrella (4a) is arranged on the outer periphery of the air lift pump (4) above the small diameter partition tube (5a). An upflow moving bed filter according to claim 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989075630U JPH0753687Y2 (en) | 1989-06-29 | 1989-06-29 | Upflow moving bed filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989075630U JPH0753687Y2 (en) | 1989-06-29 | 1989-06-29 | Upflow moving bed filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0315607U JPH0315607U (en) | 1991-02-18 |
| JPH0753687Y2 true JPH0753687Y2 (en) | 1995-12-13 |
Family
ID=31616373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989075630U Expired - Lifetime JPH0753687Y2 (en) | 1989-06-29 | 1989-06-29 | Upflow moving bed filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0753687Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2569157Y2 (en) * | 1993-12-24 | 1998-04-22 | 川崎重工業株式会社 | Water level detector for compaction machines |
| CN117801923A (en) * | 2023-06-28 | 2024-04-02 | 上海拜高乐生物技术有限公司 | Microbial fermentation system for escherichia coli |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847931U (en) * | 1981-09-24 | 1983-03-31 | 株式会社日立製作所 | CRT operation console |
| JPS5928654U (en) * | 1982-08-13 | 1984-02-22 | 株式会社日立製作所 | vaporizer accelerator pump |
-
1989
- 1989-06-29 JP JP1989075630U patent/JPH0753687Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0315607U (en) | 1991-02-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |