JPH0526179U - Purifier for water containing organic solvent - Google Patents

Purifier for water containing organic solvent

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Publication number
JPH0526179U
JPH0526179U JP8139491U JP8139491U JPH0526179U JP H0526179 U JPH0526179 U JP H0526179U JP 8139491 U JP8139491 U JP 8139491U JP 8139491 U JP8139491 U JP 8139491U JP H0526179 U JPH0526179 U JP H0526179U
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JP
Japan
Prior art keywords
organic solvent
activated carbon
solvent
gas
carbon fiber
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
Application number
JP8139491U
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Japanese (ja)
Other versions
JP2564865Y2 (en
Inventor
酉作 三宅
哲也 竹本
武士 前田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Organo Corp
Osaka Gas Co Ltd
Original Assignee
Organo Corp
Osaka Gas Co Ltd
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Priority to JP1991081394U priority Critical patent/JP2564865Y2/en
Publication of JPH0526179U publication Critical patent/JPH0526179U/en
Application granted granted Critical
Publication of JP2564865Y2 publication Critical patent/JP2564865Y2/en
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Expired - Lifetime legal-status Critical Current

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Abstract

(57)【要約】 【目的】 小型の溶剤回収装置でもって、かつ、吸着材
を交換せずに、しかも、経済的に有機溶剤を吸着して回
収する。 【構成】 曝気処理槽1に有機溶剤含有水の供給管6と
処理水の排水管7とを接続するとともに、空気を供給す
る空気供給管11を接続し、曝気処理槽1に、有機溶剤
を活性炭素繊維製吸着材27に吸着する溶剤回収装置1
6をガス配管15を介して接続し、加熱制御装置31に
より電気ヒータ29の作動を制御して、溶剤回収装置1
6に供給する有機溶剤含有ガスの温度を設定範囲内に維
持し、溶剤回収装置16に供給する有機溶剤含有ガスの
相対湿度を低くするとともにその変動を抑える。また、
溶剤回収装置16において、過熱水蒸気を供給すること
により、活性炭素繊維製吸着材27に吸着された有機溶
剤を脱着し、活性炭素繊維製吸着材27を再生する。
(57) [Abstract] [Purpose] A small solvent recovery device is used to adsorb and recover organic solvents economically without exchanging the adsorbent. [Structure] An aeration treatment tank 1 is connected to a supply pipe 6 of organic solvent-containing water and a drain pipe 7 of treated water, and an air supply pipe 11 for supplying air is connected to the aeration treatment tank 1 so that an organic solvent is supplied to the aeration treatment tank 1. Solvent recovery device 1 for adsorbing on activated carbon fiber adsorbent 27
6 is connected via the gas pipe 15, and the heating control device 31 controls the operation of the electric heater 29, so that the solvent recovery device 1
The temperature of the organic solvent-containing gas supplied to 6 is maintained within the set range, and the relative humidity of the organic solvent-containing gas supplied to the solvent recovery device 16 is lowered and its fluctuation is suppressed. Also,
In the solvent recovery device 16, by supplying superheated steam, the organic solvent adsorbed by the activated carbon fiber adsorbent 27 is desorbed and the activated carbon fiber adsorbent 27 is regenerated.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、浄水場における浄化処理や有機溶剤の濃度が数千〜数万ppb の地下 水の除染処理や、有機溶剤を使用する工場からの排水などのように、トリクロロ エチレン、1,1,1−トリクロロエタン、テトラクロロエチレン、cis−1 ,2−ジクロロエチレンなどの有機溶剤を含有した有機溶剤含有水を浄化処理す るために、曝気処理槽に有機溶剤含有水の供給管と処理水の排水管とを接続する とともに、空気を供給する空気供給管を接続し、曝気処理槽に、有機溶剤含有ガ スを供給して有機溶剤を活性炭素材製吸着材に吸着する溶剤回収装置をガス配管 を介して接続し、かつ、そのガス配管に、溶剤回収装置に供給される有機溶剤含 有ガスを加熱する加熱手段を設けた有機溶剤含有水の浄化処理装置に関する。 The present invention is applicable to purification treatment in water purification plants, decontamination treatment of groundwater with an organic solvent concentration of several thousand to tens of thousands ppb, and wastewater from factories using organic solvents such as trichloroethylene, 1,1 Pipe for supplying organic solvent-containing water and drain pipe for treated water in the aeration treatment tank to purify water containing organic solvent containing organic solvent such as 1,1-trichloroethane, tetrachloroethylene, cis-1,2-dichloroethylene And an air supply pipe that supplies air, and a solvent recovery device that supplies organic solvent-containing gas to the aeration treatment tank and adsorbs the organic solvent on the activated carbon adsorbent via a gas pipe. The present invention relates to a purification treatment apparatus for organic solvent-containing water, which is connected to the organic solvent-containing water by heating means for heating the organic solvent-containing gas supplied to the solvent recovery apparatus in its gas pipe.

【0002】[0002]

【従来の技術】[Prior Art]

有機溶剤含有水の浄化処理装置としては、従来、図8の全体概略縦断面図に示 すように、曝気処理槽01内に、気液の接触面積を増大するためのラヒシリング 等の充填材02…を充填し、曝気処理槽01の充填材02…よりも上方側に、有 機溶剤含有水の供給管03を接続するとともに排ガスを排出する排気口04を設 け、一方、曝気処理槽01の充填材02…よりも下方側に、処理水を排出する排 水管05を接続するとともに、空気を供給する空気供給管06を接続し、送風機 (図示せず)によって外気を曝気処理槽01内に導入し、充填材02…それぞれ の表面で薄い皮膜となった有機溶剤含有水と空気とを効率良く接触させ、有機溶 剤を液中から空気中に取り込み、その有機溶剤を排気口04から排出し、一方、 浄化した処理水を排水管05から排出していた。 Conventionally, as a purification treatment apparatus for water containing an organic solvent, as shown in the overall schematic vertical cross-sectional view of FIG. 8, a filler 02 such as Rahishi ring for increasing a gas-liquid contact area is provided in an aeration treatment tank 01. Is filled, and the supply pipe 03 of the organic solvent-containing water is connected to the upper side of the filler 02 in the aeration treatment tank 01 and an exhaust port 04 for discharging exhaust gas is provided, while the aeration treatment tank 01 is provided. The drainage pipe 05 for discharging treated water is connected to the lower side of the filling material 02 ..., and the air supply pipe 06 for supplying air is connected, and the outside air is aerated in the aeration treatment tank 01 by a blower (not shown). Introduced into the packing material 02, the organic solvent-containing water, which forms a thin film on each surface, and air are efficiently contacted, the organic solvent is taken into the air from the liquid, and the organic solvent is discharged from the exhaust port 04. Treated water that has been discharged, while purified He was discharged from the drainage pipe 05.

【0003】 ところが、排気口04から大気中に有機溶剤を排出すると、新たな大気汚染を 発生する問題があり、本出願人は、実願平2−24890号(出願日:平成2年 3月14日)において明示したように、粒状活性炭による吸着材を備えた溶剤回 収装置を、水滴を除去可能なミストセパレータを介装したガス配管を介して排気 口04に接続するとともに、ガス配管にヒーターを付設して溶剤回収装置に供給 する有機溶剤含有ガスの相対湿度を加熱によって低下させ、粒状活性炭に吸着さ れる水分の量を減少して粒状活性炭による吸着効率を向上しながら有機溶剤を粒 状活性炭に吸着させる技術を開発した。However, when the organic solvent is discharged into the atmosphere from the exhaust port 04, there is a problem that new air pollution occurs, and the applicant of the present invention has filed the application No. 2-24890 (filing date: March, 1990). 14 days), a solvent recovery device equipped with an adsorbent made of granular activated carbon was connected to the exhaust port 04 via a gas pipe equipped with a mist separator capable of removing water droplets, and at the same time connected to the gas pipe. A heater is attached and the relative humidity of the organic solvent-containing gas supplied to the solvent recovery device is reduced by heating, and the amount of water adsorbed on the granular activated carbon is reduced to improve the adsorption efficiency of the granular activated carbon and improve the adsorption efficiency of the organic solvent. We have developed a technology to adsorb on activated carbon.

【0004】[0004]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかしながら、粒状活性炭による吸着材では、単位重量当りの有機溶剤の吸着 量が比較的少なく、多量の粒状活性炭を必要として溶剤回収装置が全体として大 型化する欠点があった。 However, the adsorbent made of granular activated carbon has a drawback that the adsorption amount of the organic solvent per unit weight is relatively small and a large amount of the granular activated carbon is required, so that the size of the solvent recovery apparatus becomes large as a whole.

【0005】 また、粒状活性炭による溶剤吸着量が飽和量近くになるに伴って、その交換を 必要とし、そのうえ、溶剤回収装置全体が大型であるために交換に手間を要する 欠点があった。Further, as the amount of adsorbed solvent by the granular activated carbon becomes close to the saturated amount, the solvent needs to be replaced, and in addition, the entire solvent recovery device is large in size, so that there is a drawback that the replacement is troublesome.

【0006】 更に、季節や天候条件によって、排気口04から溶剤回収装置に至るガス配管 内を通る有機溶剤含有ガスの温度が変化してその相対湿度が変動するため、溶剤 回収装置に供給される有機溶剤含有ガスを単純に加熱した場合に、その加熱量が 不足して所定の相対湿度まで低下できないとか、あるいは、逆に、必要以上に加 熱し、電力消費量が多くなってランニングコストが高くなる欠点があった。Further, depending on the season and weather conditions, the temperature of the organic solvent-containing gas passing through the gas pipe from the exhaust port 04 to the solvent recovery device changes and its relative humidity fluctuates, so that the gas is supplied to the solvent recovery device. When the organic solvent-containing gas is simply heated, the amount of heating is insufficient and the relative humidity cannot be reduced to the specified relative humidity, or conversely, it is heated more than necessary, resulting in high power consumption and high running costs. There was a drawback.

【0007】 本考案は、このような事情に鑑みてなされたものであって、請求項1に係る考 案の有機溶剤含有水の浄化処理装置は、小型の溶剤回収装置でもって、かつ、吸 着材を交換せずに、しかも、経済的に有機溶剤を吸着して回収できるようにする ことを目的とし、そして、請求項2に係る考案の有機溶剤含有水の浄化処理装置 は、有機溶剤の吸着を連続的に行うことができるようにすることを目的とし、ま た、請求項3に係る考案の有機溶剤含有水の浄化処理装置は、ランニングコスト を極力低減しながら有機溶剤を良好に吸着できるようにすることを目的とする。The present invention has been made in view of the above circumstances, and an organic solvent-containing water purification treatment apparatus according to the first aspect of the present invention is a small-sized solvent recovery apparatus and also has a suction device. The purpose of the present invention is to adsorb and recover an organic solvent economically without exchanging the adhering material, and the apparatus for purifying water containing an organic solvent according to the second aspect of the invention is an organic solvent. In order to enable continuous adsorption of water, the purification device for organic solvent-containing water according to the third aspect of the invention can reduce the running cost as much as possible, and can effectively use the organic solvent. The purpose is to enable adsorption.

【0008】[0008]

【課題を解決するための手段】 請求項1に係る考案の有機溶剤含有水の浄化処理装置は、上述のような目的を 達成するために、曝気処理槽に有機溶剤含有水の供給管と処理水の排水管とを接 続するとともに、空気を供給する空気供給管を接続し、曝気処理槽に、有機溶剤 含有ガスを供給して有機溶剤を活性炭素材製吸着材に吸着する溶剤回収装置をガ ス配管を介して接続し、かつ、そのガス配管に、溶剤回収装置に供給される有機 溶剤含有ガスを加熱する加熱手段を設けた有機溶剤含有水の浄化処理装置におい て、活性炭素材製吸着材として活性炭素繊維製吸着材を用い、溶剤回収装置を、 活性炭素繊維製吸着材を収容した吸着塔にガス配管を接続するとともに、活性炭 素繊維製吸着材を間にしたガス配管とは反対側で、有機溶剤を吸着した後のガス を排出可能に構成し、かつ、活性炭素繊維製吸着材を間にして、吸着した有機溶 剤を脱着する過熱水蒸気を供給する蒸気供給管と、脱着した有機溶剤を回収する 溶剤回収管とを接続して構成し、更に、加熱手段で加熱された有機溶剤含有ガス の温度を測定する温度センサを設けるとともに、温度センサで測定された温度が 設定範囲内に維持されるように加熱手段を作動する加熱制御装置を備えて構成す る。[MEANS FOR SOLVING THE PROBLEMS] To purify an organic solvent-containing water purifying apparatus according to a first aspect of the present invention, in order to achieve the above-mentioned object, an aeration treatment tank is provided with a supply pipe and treatment of the organic solvent-containing water. In addition to connecting to the water drainage pipe, connect an air supply pipe that supplies air, and supply a solvent containing gas containing an organic solvent to the aeration treatment tank to adsorb the organic solvent to the adsorbent made of activated carbon material. In a purification device for organic solvent-containing water, which is connected via a gas pipe and is equipped with heating means for heating the organic solvent-containing gas supplied to the solvent recovery device in the gas pipe, the activated carbon material adsorption Using an activated carbon fiber adsorbent as the material, connect the solvent recovery device to the adsorption pipe containing the activated carbon fiber adsorbent, and connect the gas pipe to the gas column with the activated carbon fiber adsorbent in between. Side, absorb the organic solvent A gas supply pipe that supplies the superheated steam that desorbs the adsorbed organic solvent with an activated carbon fiber adsorbent in between, and a solvent that recovers the desorbed organic solvent. It is configured by connecting to a recovery pipe, and a temperature sensor for measuring the temperature of the organic solvent-containing gas heated by the heating means is provided, and the temperature measured by the temperature sensor is maintained within the set range. It comprises a heating control device for operating the heating means.

【0009】 活性炭素繊維製吸着材を構成する活性炭素繊維としては、ピッチ系、ポリアク リロニトリル(PAN)系、フェノール系、セルロース系等各種のものを使用で きる。 加熱手段としては、電気ヒータやスチームヒータなどが使用される。As the activated carbon fiber constituting the activated carbon fiber adsorbent, various types such as pitch type, polyacrylonitrile (PAN) type, phenol type and cellulose type can be used. An electric heater, a steam heater, or the like is used as the heating means.

【0010】 また、請求項2に係る考案の有機溶剤含有水の浄化処理装置は、上述のような 目的を達成するために、請求項1の溶剤回収装置を、活性炭素繊維製吸着材を収 容した吸着塔を二個備え、両吸着塔に対して、有機溶剤含有ガスを供給する溶剤 吸着状態と、吸着した有機溶剤を脱着する脱着状態とに背反的に切換える切換機 構を備えて構成する。In order to achieve the above-mentioned object, an apparatus for purifying water containing an organic solvent according to a second aspect of the present invention uses the solvent recovery apparatus according to the first aspect to collect an activated carbon fiber adsorbent. It is equipped with two adsorbing towers, and is equipped with a switching mechanism that switches between both adsorbing towers in a solvent adsorption state in which the gas containing an organic solvent is adsorbed and a desorption state in which the adsorbed organic solvent is desorbed. To do.

【0011】 また、請求項3に係る考案の有機溶剤含有水の浄化処理装置は、上述のような 目的を達成するために、請求項1または請求項2の加熱制御装置によって制御す る温度範囲を40〜45℃に設定する。40℃未満になると活性炭素繊維製吸着材に供 給される有機溶剤含有ガスの相対湿度が30%を越え、吸着効率を向上できず、一 方、45℃を越えると、加熱手段の電力消費量が増大し、ランニングコストが高く なって不経済になるからである。In order to achieve the above-mentioned object, the apparatus for purifying water containing an organic solvent according to the third aspect of the present invention has a temperature range controlled by the heating control apparatus according to the first or second aspect. To 40-45 ° C. When the temperature is lower than 40 ° C, the relative humidity of the organic solvent-containing gas supplied to the activated carbon fiber adsorbent exceeds 30%, and the adsorption efficiency cannot be improved. This is because the amount increases, running costs increase, and it becomes uneconomical.

【0012】[0012]

【作用】[Action]

請求項1に係る考案の有機溶剤含有水の浄化処理装置の構成によれば、曝気処 理槽から排出されて活性炭素繊維製吸着材に供給される有機溶剤含有ガスを加熱 して設定範囲内の高温状態に維持するから、その相対湿度を低下できるとともに 変動を抑えることができ、そして、蒸気供給管から活性炭素繊維製吸着材に過熱 水蒸気を供給することにより、吸着した有機溶剤を脱着して溶剤回収管を通じて 回収できるとともに活性炭素繊維製吸着材を再生できる。 According to the configuration of the purification treatment apparatus for organic solvent-containing water of the invention according to claim 1, the organic solvent-containing gas discharged from the aeration treatment tank and supplied to the activated carbon fiber adsorbent is heated to within the set range. Since it maintains its high temperature, its relative humidity can be reduced and fluctuations can be suppressed, and the adsorbed organic solvent can be desorbed by supplying superheated steam from the vapor supply pipe to the activated carbon fiber adsorbent. Can be recovered through a solvent recovery pipe and the adsorbent made of activated carbon fiber can be regenerated.

【0013】 請求項2に係る考案の有機溶剤含有水の浄化処理装置の構成によれば、二個の 吸着塔のいずれかの活性炭素繊維製吸着材に有機溶剤含有ガスを供給して有機溶 剤を連続的に吸着しながら、有機溶剤含有ガスを供給しない側の吸着塔において 、吸着した有機溶剤を脱着することができる。According to the configuration of the apparatus for purifying water containing an organic solvent according to the second aspect of the invention, the gas containing an organic solvent is supplied to the activated carbon fiber adsorbent in one of the two adsorption towers to dissolve the organic solvent. While continuously adsorbing the agent, the adsorbed organic solvent can be desorbed in the adsorption tower on the side where the organic solvent-containing gas is not supplied.

【0014】 請求項3に係る考案の有機溶剤含有水の浄化処理装置の構成によれば、有機溶 剤含有ガスの相対湿度を30%以下にしさえすれば、活性炭素繊維製吸着材による 吸着効率がほとんど変わらないことに着目し、加熱制御温度範囲を40〜45℃に設 定することにより、有機溶剤含有ガスの相対湿度を30%以下に維持するとともに 電力消費量を低減することができる。According to the configuration of the apparatus for purifying water containing an organic solvent according to the third aspect of the invention, if the relative humidity of the gas containing an organic solvent is 30% or less, the adsorption efficiency of the activated carbon fiber adsorbent is high. However, by setting the heating control temperature range to 40 to 45 ° C, the relative humidity of the gas containing the organic solvent can be maintained at 30% or less and the power consumption can be reduced.

【0015】[0015]

【実施例】【Example】

次に、本考案の実施例を図面に基づいて詳細に説明する。 Next, an embodiment of the present invention will be described in detail with reference to the drawings.

【0016】 図1は、有機溶剤含有水の浄化処理装置の実施例を示すフローシートであり、 この図において、1は曝気処理槽を示し、その内部にラシヒリング、テラレット パッキンなどの充填材2…が充填されている。FIG. 1 is a flow sheet showing an embodiment of an apparatus for purifying water containing an organic solvent, in which FIG. 1 shows an aeration treatment tank, inside of which a filler 2 such as Raschig ring and terraret packing is filled. Is filled.

【0017】 前記曝気処理槽1の上部に、原水ポンプ3と第1の流量計4と第1の流量調節 弁5とを介装した有機溶剤含有水の供給管6を接続し、第1の流量計4によって 流量を確認しながら第1の流量調節弁5を調節し、曝気処理槽1に所定流量の有 機溶剤含有水を供給できるように構成する。一方、曝気処理槽1の下部に、処理 水の排水管7を接続する。A feed pipe 6 for the organic solvent-containing water, which is provided with a raw water pump 3, a first flow meter 4, and a first flow rate adjusting valve 5, is connected to the upper part of the aeration treatment tank 1, and The first flow rate control valve 5 is adjusted while confirming the flow rate by the flow rate meter 4 so that the aeration treatment tank 1 can be supplied with a predetermined flow rate of the organic solvent-containing water. On the other hand, a drainage pipe 7 for the treated water is connected to the lower part of the aeration treatment tank 1.

【0018】 前記曝気処理槽1の下部に、第1の送風機8と第2の流量計9と第2の流量調 節弁10とを介装した空気を供給する空気供給管11を接続し、第2の流量計9 によって流量を確認しながら第2の流量調節弁10を調節し、曝気処理槽1に所 定流量の空気を供給できるように構成する。一方、曝気処理槽1の上部に、除塵 ならびに水滴除去用のミストセパレーター12を付設した排気口13を設ける。An air supply pipe 11 for supplying air is connected to the lower part of the aeration processing tank 1 through a first blower 8, a second flow meter 9 and a second flow rate control valve 10, The second flow rate control valve 10 is adjusted while confirming the flow rate by the second flow meter 9 so that a constant flow rate of air can be supplied to the aeration treatment tank 1. On the other hand, an exhaust port 13 provided with a mist separator 12 for removing dust and water droplets is provided above the aeration treatment tank 1.

【0019】 排気口13に、第2の送風機14を介装したガス配管15を介して溶剤回収装 置16を接続する。溶剤回収装置16は、ガス吸着用エレメントAをフィルター として取り付けた吸着塔17を並列状態で設置して構成し、両吸着塔17,17 の下部側空間それぞれに、第1の電磁弁18を介して前記ガス配管15を接続す るとともに、第2の電磁弁19を介してコンデンサー20およびセパレータ21 を介装した溶剤回収管22を接続する。A solvent recovery device 16 is connected to the exhaust port 13 via a gas pipe 15 in which a second blower 14 is interposed. The solvent recovery device 16 is configured by installing adsorption towers 17 in which gas adsorption elements A are mounted as filters in a parallel state, and through the first solenoid valve 18 in the lower spaces of both adsorption towers 17, 17. The gas pipe 15 is connected with the solvent recovery pipe 22 via the second solenoid valve 19 and the condenser 20 and the separator 21.

【0020】 両吸着塔17,17の上方側を、排ガス部23aを備えたカバー23で覆い、 そして、吸着塔17,17それぞれの上部開口に、カバー23に取り付けたエア シリンダ24によって開閉動作される弁体25を設け、かつ、その弁体25によ り閉じられた状態の空間に接続するように、第3の電磁弁26を介装し た蒸 気供給管27をガス吸着用エレメントA内に接続する。The upper sides of both adsorption towers 17 and 17 are covered with a cover 23 having an exhaust gas portion 23a, and opening and closing operations are performed by air cylinders 24 attached to the covers 23 at the upper openings of the adsorption towers 17 and 17, respectively. A valve 25 is provided and a vapor supply pipe 27 having a third solenoid valve 26 is connected to the gas adsorption element A so as to connect to the space closed by the valve 25. Connect in.

【0021】 以上の構成により、前記第1ないし第3の電磁弁18,18、19,19、2 6,26、および、弁体25,25それぞれを背反的に開閉し、一方の吸着塔1 7に溶剤含有ガスを供給してガス吸着用エレメントAを通過させ、ガス吸着用エ レメントAを構成する円筒状の活性炭素繊維製吸着材28に有機溶剤を吸着する 。同時に、他方の吸着塔17においては、過熱水蒸気の供給により、円筒状の活 性炭素繊維製吸着材28に吸着された有機溶剤を加熱脱着して活性炭素繊維製吸 着材28を再生し、脱着された溶剤を、コンデンサー20を経てセパレータ21 に供給し、溶剤を比重分離によって回収するようになっている。With the above configuration, the first to third electromagnetic valves 18, 18, 19, 19, 26, 26 and the valve bodies 25, 25 are opened and closed in a contradictory manner, and the one adsorption tower 1 The solvent-containing gas is supplied to 7 to pass through the gas adsorbing element A, and the organic solvent is adsorbed on the cylindrical activated carbon fiber adsorbent 28 constituting the gas adsorbing element A. At the same time, in the other adsorption tower 17, by supplying superheated steam, the organic solvent adsorbed on the cylindrical active carbon fiber adsorbent 28 is heated and desorbed to regenerate the activated carbon fiber adsorbent 28, The desorbed solvent is supplied to the separator 21 through the condenser 20 and the solvent is recovered by the specific gravity separation.

【0022】 上述した過熱水蒸気としては、水蒸気供給源側あるいは蒸気供給管27の途中 箇所などに電気ヒータなどの加熱装置を設け、飽和状態に対する相対湿度が30% 以下になった水蒸気を活性炭素繊維製吸着材28に供給するように構成するもの である。As the above-mentioned superheated steam, a heating device such as an electric heater is provided at the steam supply source side or in the middle of the steam supply pipe 27, and steam having a relative humidity of 30% or less with respect to the saturated state is activated carbon fiber. It is configured to be supplied to the adsorbent 28.

【0023】 両吸着塔17,17に対して、有機溶剤含有ガスを供給する溶剤吸着状態と、 吸着した有機溶剤を脱着する脱着状態とに背反的に切換えるための、前記第1な いし第3の電磁弁18,18、19,19、26,26、および、弁体25,2 5から成るものをして切換機構と総称する。The first or third adsorbents for switching the adsorbed state in which the gas containing an organic solvent is supplied to the adsorption towers 17 and 17 and the desorbed state in which the adsorbed organic solvent is desorbed are set in reverse. The solenoid valve 18, 18, 19, 19, 26, 26 and the valve body 25, 25 are collectively referred to as a switching mechanism.

【0024】 活性炭素繊維製吸着材28は、公称比表面積1000m2 /gのピッチ系活性炭素 繊維(A−10:株式会社アドール製)をフェルト状に加工した活性炭素繊維フ ェルト(FN300GF10:大阪ガスケミカル株式会社製)で構成する。The activated carbon fiber adsorbent 28 is an activated carbon fiber felt (FN300GF10: Osaka, which is a felt-like pitch-based activated carbon fiber (A-10: manufactured by Adol Co., Ltd.) having a nominal specific surface area of 1000 m 2 / g. Gas Chemical Co., Ltd.).

【0025】 ガス配管15の第2の送風機14よりも上流側に、加熱手段としての電気ヒー タ29を設け、一方、下流側に、ガス配管15内を流れる有機溶剤含有ガスの温 度を測定する温度センサ30を設け、温度センサ30に加熱制御装置31を接続 するとともに、その加熱制御装置31に電気ヒータ29を接続する。An electric heater 29 as heating means is provided on the upstream side of the second blower 14 of the gas pipe 15, while the temperature of the organic solvent-containing gas flowing in the gas pipe 15 is measured on the downstream side. The temperature sensor 30 is provided, the heating control device 31 is connected to the temperature sensor 30, and the electric heater 29 is connected to the heating control device 31.

【0026】 加熱制御装置31において、温度範囲を40〜45℃に設定してあり、温度センサ 30による測定温度が40℃未満になると電気ヒータ29に通電し、一方、測定温 度が45℃を越えると電気ヒータ29への通電を停止し、ガス吸着用エレメントA に供給する有機溶剤含有ガスの温度を40〜45℃の範囲内に維持するように構成す る。In the heating control device 31, the temperature range is set to 40 to 45 ° C., and when the temperature measured by the temperature sensor 30 becomes less than 40 ° C., the electric heater 29 is energized, while the measured temperature is 45 ° C. When the temperature exceeds the limit, the electric current to the electric heater 29 is stopped and the temperature of the organic solvent-containing gas supplied to the gas adsorbing element A is maintained within the range of 40 to 45 ° C.

【0027】 すなわち、上述活性炭素繊維製吸着材28を構成する活性炭素繊維フェルトで は、図2の水分吸着等温線のグラフに示すように、相対圧すなわち相対湿度が40 %以上では、その水分吸着量が増大するため、有機溶剤の吸着量が減少すること になる。また、吸着しようとする有機溶剤であるトリクロロエチレンでは、図3 の20℃における吸着等温線のグラフに示すように、相対湿度が30%の場合に、相 対湿度が0%の場合とほぼ変わらない吸着量が得られるが、相対湿度が60%、90 %と上昇するに連れて吸着量が減少する。That is, in the activated carbon fiber felt constituting the above-mentioned activated carbon fiber adsorbent 28, as shown in the graph of the moisture adsorption isotherm of FIG. 2, when the relative pressure, that is, the relative humidity is 40% or more, the moisture content is Since the adsorption amount increases, the adsorption amount of the organic solvent will decrease. As shown in the adsorption isotherm graph at 20 ° C in Fig. 3, trichloroethylene, which is an organic solvent to be adsorbed, shows almost no difference when relative humidity is 30% and relative humidity is 0%. Although the adsorption amount can be obtained, the adsorption amount decreases as the relative humidity increases to 60% and 90%.

【0028】 また、例えば、温度20℃で相対湿度 100%の有機溶剤含有ガスの相対湿度を60 %、30%と低下させるに必要な温度は、順に9℃上昇させた29℃、21℃上昇させ た41℃となり、相対湿度が約30%よりも低くなるようにするためには、有機溶剤 含有ガスの温度を40℃以上にすることが望ましく、また、電力消費量を低減する 上で45℃程度までにするのが望ましいからである。Further, for example, the temperatures required to lower the relative humidity of an organic solvent-containing gas having a relative humidity of 100% at a temperature of 20 ° C. to 60% and 30% are 29 ° C. and 21 ° C., which are sequentially increased by 9 ° C. The temperature of the organic solvent-containing gas should be 40 ° C or higher in order to reduce the relative humidity to less than about 30%. This is because it is desirable to set the temperature up to about ° C.

【0029】 以上の構成により、活性炭素繊維製吸着材28に供給する有機溶剤含有ガスの 温度を設定以上に上昇して、その相対湿度を低下し、活性炭素繊維製吸着材28 に吸着される水分量を減少して有機溶剤の吸着効率を向上するとともに、相対湿 度の変動を抑えて安定した吸着を行うことができるようになっている。With the above-described structure, the temperature of the organic solvent-containing gas supplied to the activated carbon fiber adsorbent 28 is raised above the set value, the relative humidity thereof is lowered, and the gas is adsorbed by the activated carbon fiber adsorbent 28. The amount of water is reduced to improve the adsorption efficiency of organic solvents, and the fluctuation of the relative humidity is suppressed to enable stable adsorption.

【0030】 次に、比較実験結果について説明する。 比較例としては、前述実施例において、電気ヒータ29および加熱制御装置3 1による温度制御を行わないものを対象とした。Next, the result of the comparative experiment will be described. As a comparative example, the one in which the temperature control by the electric heater 29 and the heating control device 31 is not performed in the above-described embodiment is targeted.

【0031】 そして、実施例および比較例のいずれの場合にも、トリクロロエチレンで汚染 された地下水(汚染濃度100ppb)を水量 1.8m3 /hrで曝気処理槽1に供給す るとともに、風量 1.2m3 /min(水量に対する空気量は40倍)で空気を曝気処理 槽1に供給し、その汚染濃度が1ppb以下になるように浄化処理した。このときの 曝気処理槽1から排出される有機溶剤含有ガスの風量は 1.2m3 /min 、トリク ロロエチレンの平均濃度は0.48ppm であり、この有機溶剤含有ガスを溶剤回収装 置16に供給して処理した。In each of the examples and the comparative examples, trichlorethylene-contaminated groundwater (contamination concentration 100 ppb) was supplied to the aeration treatment tank 1 at a water volume of 1.8 m 3 / hr and an air volume of 1.2 m 3 Air was supplied to the aeration treatment tank 1 at a flow rate of / min (the amount of air is 40 times as much as the amount of water), and purification treatment was performed so that the pollution concentration was 1 ppb or less. At this time, the gas volume of the organic solvent-containing gas discharged from the aeration processing tank 1 was 1.2 m 3 / min, the average concentration of trichloroethylene was 0.48 ppm, and this organic solvent-containing gas was supplied to the solvent recovery device 16. Processed.

【0032】 実施例において、溶剤回収装置16に供給される直前の有機溶剤含有ガスの温 度Tを40〜45℃の範囲内に維持するように制御して相対湿度Hを測定したところ 、図4の温度および相対湿度それぞれを吸着時間ごとの値で示すグラフに示すよ うに、30%程度に維持できた。In the example, the relative humidity H was measured by controlling the temperature T of the organic solvent-containing gas immediately before being supplied to the solvent recovery device 16 so as to be maintained within the range of 40 to 45 ° C. As shown in the graph showing the temperature and the relative humidity of No. 4 as the value for each adsorption time, it could be maintained at about 30%.

【0033】 この結果から、図5の破過曲線に示すように、 400時間を経過するまでは安定 した状態で有機溶剤を吸着できる。このため、安定した運転条件を得られること が明らかである。From this result, as shown by the breakthrough curve in FIG. 5, the organic solvent can be adsorbed in a stable state until 400 hours have passed. Therefore, it is clear that stable operating conditions can be obtained.

【0034】 一方、比較例において、溶剤回収装置16に供給される直前の有機溶剤含有ガ スの温度Tと相対湿度Hそれぞれを測定したところ、図6の温度および相対湿度 それぞれを吸着時間ごとの値で示すグラフに示す結果が得られた。この結果から 、日中の晴天時には、ガス配管15を介して有機溶剤含有ガスが温められて相対 湿度Hが低下するが、夜間に外気温が低くなると相対湿度Hが高くなるといった ように、天候や時間などの影響を受けて相対湿度Hが変動することがわかる。On the other hand, in the comparative example, when the temperature T and the relative humidity H of the organic solvent-containing gas immediately before being supplied to the solvent recovery device 16 were measured, the temperature and the relative humidity in FIG. The results shown in the graph indicated by the value were obtained. From this result, when the weather is fine in the daytime, the organic solvent-containing gas is warmed through the gas pipe 15 to lower the relative humidity H, but the relative humidity H rises when the outside air temperature is low at night. It can be seen that the relative humidity H fluctuates under the influence of temperature and time.

【0035】 このような相対湿度Hが変動する状態において活性炭素繊維製吸着材27で有 機溶剤を吸着処理すると、図7の破過曲線に示すように、 200時間を経過した時 点で大きく乱れ始めて不安定になる。When the organic solvent is adsorbed by the activated carbon fiber adsorbent 27 in a state where the relative humidity H fluctuates as described above, as shown by the breakthrough curve in FIG. It becomes unstable and becomes unstable.

【0036】 上記実施例では、吸着塔17を二個設け、ガス吸着用エレメントAを構成する 活性炭素繊維製吸着材28に対し、有機溶剤の吸着と過熱水蒸気による脱着再生 を交互に行って連続的に有機溶剤を回収する、いわゆる二塔式の溶剤回収装置1 6を使用しているが、本考案としては、いわゆる一塔タイプの溶剤回収装置を使 用し、活性炭素繊維製吸着材28による有機溶剤の吸着が飽和に達するに相当す る時間を見込んだ所定時間が経過するたびに、一時的に有機溶剤の吸着を中断し て脱着状態に切換え、過熱水蒸気を供給して吸着した有機溶剤を脱着できるよう にするとともに、その脱着した溶剤を凝縮器で凝縮液化し、かつ、比重分離装置 で回収するようにしても良い。脱着回収した溶剤は、産業廃棄物の処理工程など の後処理に付しても良い。In the above embodiment, two adsorption towers 17 are provided, and the activated carbon fiber adsorbent 28 constituting the gas adsorbing element A is continuously adsorbed with an organic solvent and desorbed and regenerated with superheated steam alternately. The so-called two-column type solvent recovery device 16 for recovering the organic solvent is used, but in the present invention, the so-called one-column type solvent recovery device is used, and the activated carbon fiber adsorbent 28 is used. Each time a predetermined time, which is expected to reach the saturation of the adsorption of the organic solvent, has been reached, the adsorption of the organic solvent is temporarily suspended and switched to the desorption state, and superheated steam is supplied to absorb the adsorbed organic solvent. The solvent may be desorbed, and the desorbed solvent may be condensed and liquefied by a condenser and recovered by a specific gravity separator. The desorbed and recovered solvent may be subjected to post-treatment such as a process for treating industrial waste.

【0037】 上述した一塔タイプの溶剤回収装置を使用して実施する場合の一例を挙げれば 次の通りである。 トリクロロレチレンで汚染された地下水(汚染濃度10000ppb)を水量12.5m3 /hrで曝気処理槽1に供給するとともに、風量 250m3 /hr( 水量に対する 空気量は20倍)で空気を曝気処理槽1に供給し、その汚染濃度が0.4ppm以下にな るように浄化処理する。このときの曝気処理槽1から排出される有機溶剤含有ガ スの風量は 250m3 /hr、トリクロロエチレンの平均濃度は 87.7ppmであり、 この有機溶剤含有ガスを溶剤回収装置16に供給して処理する。そして、吸着時 間が 120分経過するたびに、曝気処理槽1での曝気処理を停止して活性炭素繊維 製吸着材に過熱水蒸気を10分間供給する。これらの処理により、有機溶剤の吸着 と脱着再生とを交互に繰り返して浄化処理を良好に行うことができる。The following is an example of a case where the above-described one-column type solvent recovery apparatus is used for implementation. Groundwater contaminated with trichlororetylene (pollution concentration 10000 ppb) is supplied to the aeration treatment tank 1 at a water volume of 12.5 m 3 / hr, and air is aeration treatment tank at an air volume of 250 m 3 / hr (air volume is 20 times the water volume). 1 and purify it so that the concentration of pollution becomes 0.4 ppm or less. At this time, the gas volume of the organic solvent-containing gas discharged from the aeration treatment tank 1 was 250 m 3 / hr and the average concentration of trichlorethylene was 87.7 ppm. The organic solvent-containing gas was supplied to the solvent recovery device 16 for processing. . After every 120 minutes of adsorption time, the aeration treatment in the aeration treatment tank 1 is stopped and superheated steam is supplied to the activated carbon fiber adsorbent for 10 minutes. By these treatments, the adsorption treatment and the desorption regeneration of the organic solvent are alternately repeated, and the purification treatment can be favorably performed.

【0038】 上述実施例では、トリクロロエチレンで汚染された地下水の浄化を対象とする ために、加熱制御温度範囲を40〜45℃に設定しているが、その加熱制御温度範囲 は、処理しようとする有機溶剤含有水に応じて適宜設定すれば良い。In the above-mentioned embodiment, the heating control temperature range is set to 40 to 45 ° C. in order to purify the groundwater contaminated with trichlorethylene, but the heating control temperature range is to be treated. It may be appropriately set according to the water containing the organic solvent.

【0039】 また、上述実施例では、曝気処理槽1として、その槽の上部から有機溶剤含有 水を供給し、処理水を下部から排出するように構成したものを示しているが、本 考案としては、例えば、排気口を備えた密閉型の槽(内部に攪拌スクリューなど の攪拌装置を設けても設けなくても良い)内の底部側に空気供給管を設け、槽の 上方側一側方から有機溶剤含有水を供給するとともに、曝気処理後の水を槽の上 方側他側方から排出するように構成するとか、あるいは、50m以上にも及ぶ長さ の有底状の外筒内に中空状の内筒を内嵌し、有機溶剤含有水を内筒の上部から供 給し、内筒内を下降した後、内筒と外筒との環状空間側に迂回するとともにそこ を上昇させて上部から処理水を排出する、いわゆる深槽タイプの曝気処理槽を用 いるものにも適用できる。In the above embodiment, the aeration treatment tank 1 is configured so that the organic solvent-containing water is supplied from the upper portion of the tank and the treated water is discharged from the lower portion. For example, an air supply pipe is provided on the bottom side of a closed tank (with or without a stirring device such as a stirring screw) equipped with an exhaust port, and one side above the tank In addition to supplying water containing organic solvent from above, the water after aeration treatment is discharged from the upper side or the other side of the tank, or inside a bottomed outer cylinder with a length of 50 m or more. A hollow inner cylinder is fitted inside, the water containing organic solvent is supplied from the upper part of the inner cylinder, and after descending inside the inner cylinder, it detours to the annular space side of the inner cylinder and the outer cylinder and rises there. Use a so-called deep tank type aeration treatment tank that discharges the treated water from above. It can also be applied to things.

【0040】 また、溶剤回収装置16に供給する前に、曝気処理槽1からの有機溶剤含有ガ スを濃縮装置に供給して濃縮処理し、その高濃度の有機溶剤含有ガスを溶剤回収 装置16に供給して有機溶剤を吸着させるように構成しても良い。Before being supplied to the solvent recovery device 16, the organic solvent-containing gas from the aeration treatment tank 1 is supplied to the concentration device for concentration processing, and the high-concentration organic solvent-containing gas is supplied to the solvent recovery device 16 Alternatively, the organic solvent may be adsorbed and adsorbed on the substrate.

【0041】 また、上述実施例では、溶剤回収装置16に供給される有機溶剤含有ガスの温 度を40〜45℃の範囲内に制御し、有機溶剤含有ガスの相対湿度が約30%よりも低 くなるようにして、吸着効率を十分に向上しながら電力消費量を低減できるよう に構成しているが、本考案としては、例えば、温度を30〜35℃の範囲内に制御し 、相対湿度が約60%よりも低くなるようにして、ある程度の吸着効率の向上を図 りながら、電力消費量をより一層低減してランニングコストを軽減するように構 成しても良い。Further, in the above-mentioned embodiment, the temperature of the organic solvent-containing gas supplied to the solvent recovery device 16 is controlled within the range of 40 to 45 ° C., and the relative humidity of the organic solvent-containing gas is higher than about 30%. It is configured so that the power consumption can be reduced while lowering the adsorption efficiency sufficiently, but in the present invention, for example, the temperature is controlled within the range of 30 to 35 ° C, and the relative The humidity may be set to be lower than about 60%, and the adsorption efficiency may be improved to some extent, and the power consumption may be further reduced to reduce the running cost.

【0042】 上記実施例では、吸着塔17内に円筒状の活性炭素繊維製吸着材28を設けて 溶剤回収装置16を構成しているが、例えば、シート状の活性炭素繊維製吸着材 を多層に積層して収容することにより溶剤回収装置を構成しても良い。In the above-described embodiment, the solvent recovery device 16 is configured by providing the cylindrical activated carbon fiber adsorbent 28 in the adsorption tower 17, but, for example, a sheet-shaped activated carbon fiber adsorbent is provided in multiple layers. The solvent recovery device may be configured by stacking and accommodating the above.

【0043】[0043]

【考案の効果】[Effect of the device]

請求項1に係る考案の有機溶剤含有水の浄化処理装置によれば、活性炭素材製 吸着材として吸着効率の高い活性炭素繊維製吸着材を用い、かつ、活性炭素繊維 製吸着材に供給される有機溶剤含有ガスの相対湿度を低下するとともにその変動 を抑えるから、溶剤回収装置を小型化でき、かつ、活性炭素繊維製吸着材に吸着 される水分量を減少できて有機溶剤の吸着効率を向上できるとともに安定状態に 維持でき、有機溶剤を良好に吸着して回収できるようになった。 According to the apparatus for purifying water containing an organic solvent of the invention according to claim 1, an activated carbon fiber adsorbent having a high adsorption efficiency is used as the activated carbon adsorbent, and the activated carbon fiber adsorbent is supplied to the activated carbon fiber adsorbent. Since the relative humidity of the gas containing the organic solvent is reduced and its fluctuation is suppressed, the solvent recovery device can be downsized and the amount of water adsorbed on the activated carbon fiber adsorbent can be reduced to improve the adsorption efficiency of the organic solvent. In addition to being able to maintain it in a stable state, it is now possible to satisfactorily adsorb and recover organic solvents.

【0044】 しかも、活性炭素繊維製吸着材に過熱水蒸気を供給し、吸着した有機溶剤を脱 着して回収するから、活性炭素繊維製吸着材への有機溶剤の吸着量が飽和になる 前に適宜再生することができ、活性炭素繊維製吸着材を交換せずに済み、手間少 なく浄化処理を行うことができる。Moreover, since the superheated steam is supplied to the activated carbon fiber adsorbent and the adsorbed organic solvent is desorbed and collected, the adsorbed amount of the organic solvent on the activated carbon fiber adsorbent becomes saturated. It can be appropriately regenerated, and the adsorbent made of activated carbon fiber does not need to be replaced, and the purification treatment can be performed with little effort.

【0045】 また、請求項2に係る考案の有機溶剤含有水の浄化処理装置によれば、有機溶 剤を連続的に吸着するから、溶剤回収装置への有機溶剤含有ガスの供給を中断せ ずに済み、浄化処理を一層良好に行うことができる。Further, according to the apparatus for purifying water containing an organic solvent according to the second aspect of the present invention, since the organic solvent is continuously adsorbed, the supply of the gas containing an organic solvent to the solvent recovery apparatus is not interrupted. Therefore, the purification process can be performed better.

【0046】 また、請求項3に係る考案の有機溶剤含有水の浄化処理装置によれば、加熱制 御温度範囲を40〜45℃に設定し、有機溶剤含有ガスの相対湿度を30%以下に維持 するとともに不必要な加熱を行わないから、電力消費量を低減してランニングコ ストを極力低減するとともに脱着再生に至る時間を極力長くしながら、有機溶剤 を良好に吸着できる。According to the apparatus for purifying water containing organic solvent according to the third aspect of the invention, the heating control temperature range is set to 40 to 45 ° C., and the relative humidity of the gas containing organic solvent is set to 30% or less. Since it is maintained and unnecessary heating is not performed, it is possible to adsorb the organic solvent satisfactorily while reducing the power consumption, reducing the running cost as much as possible, and prolonging the time to desorption regeneration.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案に係る有機溶剤含有水の浄化処理装置の
実施例を示すフローシートである。
FIG. 1 is a flow sheet showing an embodiment of an apparatus for purifying water containing an organic solvent according to the present invention.

【図2】水分吸着等温線のグラフである。FIG. 2 is a graph of moisture adsorption isotherm.

【図3】トリクロロエチレンの吸着等温線のグラフであ
る。
FIG. 3 is a graph of an adsorption isotherm of trichlorethylene.

【図4】実施例における有機溶剤含有ガスの温度および
相対湿度それぞれを吸着時間ごとの値で示すグラフであ
る。
FIG. 4 is a graph showing the temperature and relative humidity of the organic solvent-containing gas in the examples as values for each adsorption time.

【図5】実施例における吸着破過曲線を示すグラフであ
る。
FIG. 5 is a graph showing an adsorption breakthrough curve in an example.

【図6】比較例における有機溶剤含有ガスの温度および
相対湿度それぞれを吸着時間ごとの値で示すグラフであ
る。
FIG. 6 is a graph showing the temperature and relative humidity of an organic solvent-containing gas in Comparative Example as values for each adsorption time.

【図7】比較例における吸着破過曲線を示すグラフであ
る。
FIG. 7 is a graph showing an adsorption breakthrough curve in a comparative example.

【図8】従来例を示す全体概略縦断面図である。FIG. 8 is an overall schematic vertical sectional view showing a conventional example.

【符号の説明】[Explanation of symbols]

1…曝気処理槽 6…供給管 7…排水管 11…空気供給管 13…排気口 15…ガス配管 16…溶剤回収装置 17…吸着塔 22…溶剤回収管 27…蒸気供給管 28…活性炭素繊維製吸着材 29…加熱手段としての電気ヒータ 30…温度センサ 31…加熱制御装置 1 ... Aeration treatment tank 6 ... Supply pipe 7 ... Drain pipe 11 ... Air supply pipe 13 ... Exhaust port 15 ... Gas pipe 16 ... Solvent recovery device 17 ... Adsorption tower 22 ... Solvent recovery pipe 27 ... Steam supply pipe 28 ... Activated carbon fiber Adsorbent 29. Electric heater 30 as heating means 30. Temperature sensor 31. Heating control device

───────────────────────────────────────────────────── フロントページの続き (72)考案者 前田 武士 大阪市中央区平野町四丁目1番2号 大阪 瓦斯株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Maeda 4-1-2, Hiranocho, Chuo-ku, Osaka City Osaka Gas Co., Ltd.

Claims (3)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 曝気処理槽に有機溶剤含有水の供給管と
処理水の排水管とを接続するとともに、空気を供給する
空気供給管を接続し、前記曝気処理槽に、有機溶剤含有
ガスを供給して有機溶剤を活性炭素材製吸着材に吸着す
る溶剤回収装置をガス配管を介して接続し、かつ、前記
ガス配管に、前記溶剤回収装置に供給される有機溶剤含
有ガスを加熱する加熱手段を設けた有機溶剤含有水の浄
化処理装置において、 前記活性炭素材製吸着材として活性炭素繊維製吸着材を
用い、前記溶剤回収装置を、前記活性炭素繊維製吸着材
を収容した吸着塔にガス配管を接続するとともに、前記
活性炭素繊維製吸着材を間にした前記ガス配管とは反対
側で、有機溶剤を吸着した後のガスを排出可能に構成
し、かつ、前記活性炭素繊維製吸着材を間にして、吸着
した有機溶剤を脱着する過熱水蒸気を供給する蒸気供給
管と、脱着した有機溶剤を回収する溶剤回収管とを接続
して構成し、更に、前記加熱手段で加熱された有機溶剤
含有ガスの温度を測定する温度センサを設けるととも
に、前記温度センサで測定された温度が設定範囲内に維
持されるように前記加熱手段を作動する加熱制御装置を
備えたことを特徴とする有機溶剤含有水の浄化処理装
置。
1. An aeration treatment tank is connected with a supply pipe for water containing an organic solvent and a drain pipe for treated water, and an air supply pipe for supplying air is connected to the aeration treatment tank to supply a gas containing an organic solvent. A heating means for connecting a solvent recovery device for supplying and adsorbing an organic solvent to the activated carbon adsorbent via a gas pipe, and for heating the organic solvent-containing gas supplied to the solvent recovery device to the gas pipe. In an apparatus for purifying water containing organic solvent, an activated carbon fiber adsorbent is used as the activated carbon adsorbent, and the solvent recovery device is a gas pipe in an adsorption tower containing the activated carbon fiber adsorbent. With the connection of the activated carbon fiber adsorbent on the opposite side of the gas pipe, the gas after adsorbing the organic solvent is configured to be discharged, and the activated carbon fiber adsorbent In between, suck The steam supply pipe for supplying superheated steam for desorbing the organic solvent and a solvent recovery pipe for recovering the desorbed organic solvent are connected to each other, and the temperature of the organic solvent-containing gas heated by the heating means is adjusted. Purification treatment of water containing an organic solvent, which is provided with a temperature sensor for measuring, and a heating control device for operating the heating means so that the temperature measured by the temperature sensor is maintained within a set range. apparatus.
【請求項2】 請求項1の溶剤回収装置が、活性炭素繊
維製吸着材を収容した吸着塔を二個備え、両吸着塔に対
して、有機溶剤含有ガスを供給する溶剤吸着状態と、吸
着した有機溶剤を脱着する脱着状態とに背反的に切換え
る切換機構を備えて構成したものである有機溶剤含有水
の浄化処理装置。
2. The solvent recovery apparatus according to claim 1, comprising two adsorption towers containing an activated carbon fiber adsorbent, and a solvent adsorption state in which an organic solvent-containing gas is supplied to both adsorption towers and an adsorption state. An apparatus for purifying water containing an organic solvent, comprising a switching mechanism for switching between the desorbed state and the desorbed state of the organic solvent.
【請求項3】 請求項1または請求項2の加熱制御装置
によって制御する設定温度範囲が40〜45℃である有機溶
剤含有水の浄化処理装置。
3. A purification treatment apparatus for water containing an organic solvent, wherein the set temperature range controlled by the heating control apparatus according to claim 1 or 2 is 40 to 45 ° C.
JP1991081394U 1991-09-10 1991-09-10 Purification equipment for water containing organic solvents Expired - Lifetime JP2564865Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1991081394U JP2564865Y2 (en) 1991-09-10 1991-09-10 Purification equipment for water containing organic solvents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1991081394U JP2564865Y2 (en) 1991-09-10 1991-09-10 Purification equipment for water containing organic solvents

Publications (2)

Publication Number Publication Date
JPH0526179U true JPH0526179U (en) 1993-04-06
JP2564865Y2 JP2564865Y2 (en) 1998-03-11

Family

ID=13745092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1991081394U Expired - Lifetime JP2564865Y2 (en) 1991-09-10 1991-09-10 Purification equipment for water containing organic solvents

Country Status (1)

Country Link
JP (1) JP2564865Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009160583A (en) * 2009-04-20 2009-07-23 Toyobo Co Ltd Method for treating organic solvent gas
JP2012050959A (en) * 2010-09-03 2012-03-15 Jfe Engineering Corp Deodorizing device and deodorizing method
JP2017074538A (en) * 2015-10-13 2017-04-20 東洋紡株式会社 Organic solvent recovery system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61200837A (en) * 1985-03-01 1986-09-05 Ebara Infilco Co Ltd Treatment of exhaust gas
JPS6455888A (en) * 1987-08-26 1989-03-02 Nec Corp Semiconductor element
JPH02169085A (en) * 1988-12-20 1990-06-29 Toyobo Co Ltd Waste water treatment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61200837A (en) * 1985-03-01 1986-09-05 Ebara Infilco Co Ltd Treatment of exhaust gas
JPS6455888A (en) * 1987-08-26 1989-03-02 Nec Corp Semiconductor element
JPH02169085A (en) * 1988-12-20 1990-06-29 Toyobo Co Ltd Waste water treatment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009160583A (en) * 2009-04-20 2009-07-23 Toyobo Co Ltd Method for treating organic solvent gas
JP2012050959A (en) * 2010-09-03 2012-03-15 Jfe Engineering Corp Deodorizing device and deodorizing method
JP2017074538A (en) * 2015-10-13 2017-04-20 東洋紡株式会社 Organic solvent recovery system

Also Published As

Publication number Publication date
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