JP4923266B2 - Contaminated water treatment equipment - Google Patents
Contaminated water treatment equipment Download PDFInfo
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- JP4923266B2 JP4923266B2 JP2007153092A JP2007153092A JP4923266B2 JP 4923266 B2 JP4923266 B2 JP 4923266B2 JP 2007153092 A JP2007153092 A JP 2007153092A JP 2007153092 A JP2007153092 A JP 2007153092A JP 4923266 B2 JP4923266 B2 JP 4923266B2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 521
- 238000005273 aeration Methods 0.000 claims description 235
- 239000012855 volatile organic compound Substances 0.000 claims description 129
- 238000000926 separation method Methods 0.000 claims description 58
- 238000011109 contamination Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 8
- 150000002894 organic compounds Chemical class 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 116
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 7
- 238000003795 desorption Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000003673 groundwater Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000037452 priming Effects 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000005276 aerator Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Description
本発明は、人体にとって有害な揮発性有機化合物を含んだ地下水等の汚染水から該揮発性有機化合物を脱離させるために地上で該汚染水の曝気処理を行う汚染水曝気装置及び該装置を利用した汚染水処理装置に関する。 The present invention relates to a contaminated water aeration apparatus that performs aeration treatment of contaminated water on the ground in order to desorb the volatile organic compound from contaminated water such as groundwater containing volatile organic compounds harmful to human bodies, and the apparatus. It relates to the contaminated water treatment equipment used.
ＶＯＣと称されている揮発性有機化合物を含んだ地下水等の汚染水から該ＶＯＣを脱離させて除去し、さらには該脱離させたＶＯＣガスを処理することが行われている。 The VOC is desorbed and removed from contaminated water such as groundwater containing a volatile organic compound called VOC, and further, the desorbed VOC gas is treated.
地下水等の汚染水からＶＯＣを脱離させる地上での処理についてはこれまで様々の手法が提案されてきたが、代表的なものとして、汚染水を地上の曝気槽へ導き該曝気槽で曝気して汚染水に溶存しているＶＯＣを揮発脱離させる手法を挙げることができる。 Various methods have been proposed so far for removing VOCs from contaminated water such as groundwater, but as a typical example, the contaminated water is guided to the aeration tank on the ground and aerated in the aeration tank. For example, the VOC dissolved in the contaminated water can be volatilized and desorbed.
例えば、特開平７−３０８６６０号公報には、地中井戸からポンプで汲み上げた汚染水を曝気槽の上部から該曝気槽内へ投入して曝気槽内のラシヒリング、テラレットパッキング等の充填材中を流下させる一方、曝気槽下部からブロアで給気することで汚染水を曝気し、それにより汚染水からＶＯＣを揮発させて曝気槽上部から取り出すとともに曝気槽下部に浄化された水を集めて取り出し、曝気槽上部から取り出したＶＯＣガスはガス処理部で処理することが記載されている。 For example, in JP-A-7-308660, contaminated water pumped from an underground well is introduced into the aeration tank from the upper part of the aeration tank, and in a filler such as Raschig ring or terralet packing in the aeration tank. In addition, the contaminated water is aerated by supplying air from the lower part of the aeration tank with a blower, thereby volatilizing the VOC from the contaminated water and taking it out from the upper part of the aeration tank and collecting the purified water in the lower part of the aeration tank. In addition, it is described that the VOC gas taken out from the upper part of the aeration tank is processed in the gas processing unit.
特開２００３−１８１４４８号公報には、曝気槽として、内部に複数本の紫外線ランプを配列した領域を形成したものを用いるほかは、特開平７−３０８６６０号公報と同様にして汚染水を曝気処理するとともに気相へ移行したＶＯＣガスを取り出し、処理することが記載されている。 In JP-A-2003-181448, aeration treatment of contaminated water is performed in the same manner as JP-A-7-308660, except that an aeration tank is used in which an area in which a plurality of ultraviolet lamps are arranged is formed. In addition, it is described that the VOC gas transferred to the gas phase is taken out and processed.
上記のほか、図４に例示するように、曝気槽９内に上下方向に複数段にトレイ９１を配列し、曝気槽上部から汚染水を供給してそれら複数段のトレイ９１に順次落下移動させる一方、曝気槽下部からブロア９２で給気して各トレイに形成された通気孔に下から上へ通気させ、それにより汚染水を曝気してＶＯＣを揮発させて曝気槽上部から取り出すとともに曝気槽下部に処理水を集めて取り出し、曝気槽上部から取り出したＶＯＣガスはガス処理部で処理する方法も知られている。 In addition to the above, as illustrated in FIG. 4, the trays 91 are arranged in a plurality of stages in the vertical direction in the aeration tank 9, contaminated water is supplied from the upper part of the aeration tank, and sequentially dropped and moved to the trays 91 in the plurality of stages. On the other hand, air is supplied from the lower part of the aeration tank by the blower 92 and is vented from the bottom to the upper through holes formed in each tray, thereby aeration of contaminated water and volatilization of VOC and taking out from the upper part of the aeration tank. There is also known a method in which treated water is collected and taken out at the lower part, and the VOC gas taken out from the upper part of the aeration tank is treated in a gas treating part.
しかしながら、特開平７−３０８６６０号公報や特開２００３−１８１４４８号公報に記載された曝気方法では、曝気槽における汚染水曝気を汚染水の全体にわたり十分行うことは困難であり、大がかりな曝気槽を用いる割りには曝気効率が低い。 However, with the aeration method described in Japanese Patent Application Laid-Open No. 7-308660 and Japanese Patent Application Laid-Open No. 2003-181448, it is difficult to sufficiently aerate the contaminated water in the entire aerated tank. Aeration efficiency is low for use.
また、汚染水と空気との触れ合いを高めるために曝気槽内に充填材領域を形成しなければならず、さらに、曝気槽内へ給気するためのブロアは大きい出力のものが要求され、これらにより、装置構成が高価につき、また、大出力ブロアの消費電力が大きくランニングコストも高くつく。 In order to increase the contact between contaminated water and air, a filler region must be formed in the aeration tank, and a blower for supplying air into the aeration tank is required to have a high output. Therefore, the apparatus configuration is expensive, the power consumption of the large output blower is large, and the running cost is high.
この点、図４に示す曝気槽９によると、汚染水を効率よく曝気させることができると考えられるが、この場合でも、複数段の曝気用トレイ９１が必要であり、曝気槽内へ給気するためのブロア９２は大きい出力のものが要求されるので、それだけ装置構成が高価につき、また、大出力ブロアの消費電力が大きくランニングコストが高くつく。 In this regard, according to the aeration tank 9 shown in FIG. 4, it is considered that the contaminated water can be efficiently aerated. However, even in this case, a plurality of aeration trays 91 are necessary, and the aeration tank 9 is supplied with air. Therefore, the blower 92 is required to have a large output, so that the device configuration is expensive, and the power consumption of the large output blower is large and the running cost is high.
本発明は本来、後述する第３の課題や第４の課題を解決しようとするものであるが、その前提として次に述べる第１の課題や第３の課題も解決しようとするものである。
第１の課題とは、揮発性有機化合物を含有する汚染水を曝気して該汚染水から揮発性有機化合物を揮発脱離させる汚染水曝気装置であって、汚染水を従来より全体的に簡単、確実に曝気してそれだけよく揮発性有機化合物を揮発脱離させることができるとともにランニングコストを低く抑えることができる汚染水曝気装置を提供することである。
The present invention originally intends to solve the third and fourth problems to be described later, but as a premise thereof, it intends to solve the first and third problems described below.
The first problem is a contaminated water aeration apparatus that aerates contaminated water containing a volatile organic compound and volatilizes and desorbs volatile organic compounds from the contaminated water. An object of the present invention is to provide a contaminated water aeration apparatus that can reliably aerate and volatilize and desorb volatile organic compounds as much as possible and can keep running costs low .
第２の課題とは、前記第１の課題を解決できるとともに、全体を一体的に容易に搬送したり、設置したりでき、汚染水の汚染の程度に応じて容易に複数段に、且つ、それぞれの配置の自由度高く連設して用いることができる汚染水曝気装置を提供することである。 The second problem can solve the first problem, and can be easily transported or installed as a whole, easily in multiple stages according to the degree of contamination of the contaminated water, and It is an object of the present invention to provide a contaminated water aeration apparatus that can be continuously used with a high degree of freedom in each arrangement .
第３の課題とは、揮発性有機化合物を含有する汚染水を曝気して該汚染水から揮発性有機化合物を揮発脱離させ、揮発脱離した揮発性有機化合物ガスを含有する空気から揮発性有機化合物ガスを除去する処理を行う汚染水処理装置であって、汚染水を従来より全体的に簡単、確実に曝気してそれだけよく揮発性有機化合物を揮発脱離させることができるとともにそのためのランニングコストを低く抑えることができ、揮発脱離した揮発性有機化合物ガスを含有する空気からの該揮発性有機化合物ガスの除去もランニングコストを抑制して行える汚染水処理装置を提供することである。 The third problem is that volatile organic compounds containing volatile organic compounds are aerated to volatilize and desorb volatile organic compounds from the contaminated water, and are volatile from air containing volatile organic compound gases that have been volatilized and desorbed. Contaminated water treatment equipment that removes organic compound gas, and can easily and reliably aerate contaminated water as a whole and volatile organic compounds can be volatilized and desorbed. It is an object of the present invention to provide a contaminated water treatment apparatus capable of reducing the cost and removing the volatile organic compound gas from the air containing the volatile organic compound gas that has been volatilized and desorbed while suppressing the running cost .
第４の課題とは、前記第３の課題を解決できるとともに、揮発性有機化合物を含有する汚染水を曝気して該汚染水から揮発性有機化合物を揮発脱離させる汚染水曝気装置の部分を一体的に容易に搬送したり、設置したりでき、汚染水の汚染の程度に応じて容易に複数段に、且つ、それぞれの汚染水曝気装置部分の配置の自由度高く増設して汚染水処理能力を高めることができる汚染水処理装置を提供することである。 The fourth problem is that a part of the contaminated water aeration apparatus that can solve the third problem and aerate the contaminated water containing the volatile organic compound to volatilize and desorb the volatile organic compound from the contaminated water. Contaminated water treatment can be easily transported and installed as a single unit, and can be easily installed in multiple stages according to the degree of contamination of the contaminated water, and with increased flexibility in the arrangement of each contaminated water aeration unit. It is to provide a contaminated water treatment apparatus capable of enhancing the capacity .
本発明は、前記第１の課題を解決するため次の第１及び第２の汚染水曝気装置を提供する。
〔１〕第１の汚染水曝気装置
揮発性有機化合物を含有する汚染水を曝気して該汚染水から揮発性有機化合物を揮発脱離させる汚染水曝気装置であり、
揮発性有機化合物を含有する汚染水を吸引吐出するためのポンプと、
前記ポンプから汚染水供給を受け、該汚染水に空気を混合して曝気しつつ気水混合水として放出する１又は２以上の曝気ノズルを含む曝気ユニットと、
前記曝気ユニットの曝気ノズルから放出される気水混合水を受け入れるとともに該気水混合水から放出される揮発性有機化合物ガス含有空気を保持する気水分離室とを含んでおり、
前記曝気ノズルは該曝気ノズルでの噴出水流により生じる負圧により該噴出水流へ向け空気を導入混合させるノズルであり、
前記気水分離室は、前記曝気ユニットの曝気ノズルからの放出水を受け入れる水槽部と、該水槽部に溜まる水を放流又は次の処理のために流出させるための放水部と、該水槽部上方のガス保持空間部と、該ガス保持空間部の揮発性有機化合物ガス含有空気を次の処理のために流出させるためのガス放出部とを含んでいる汚染水曝気装置。
In order to solve the first problem, the present invention provides the following first and second contaminated water aeration apparatuses.
[1] A first contaminated water aeration apparatus is a contaminated water aeration apparatus that aerated contaminated water containing a volatile organic compound to volatilize and desorb the volatile organic compound from the contaminated water.
A pump for sucking and discharging contaminated water containing volatile organic compounds;
An aeration unit including one or two or more aeration nozzles that receive contaminated water supply from the pump and discharge the mixed water as air-water mixed water while aerated.
An air / water separation chamber for receiving air / water mixed water discharged from the aeration nozzle of the aeration unit and holding volatile organic compound gas-containing air released from the air / water mixed water;
The aeration nozzle is a nozzle that introduces and mixes air toward the squirting water flow by a negative pressure generated by the squirting water flow at the aeration nozzle,
The air / water separation chamber includes a water tank part that receives water discharged from the aeration nozzle of the aeration unit, a water discharge part for discharging water accumulated in the water tank part or flowing out for subsequent processing, and an upper part of the water tank part. A polluted water aeration apparatus comprising: a gas holding space portion; and a gas discharge portion for causing the volatile organic compound gas-containing air in the gas holding space portion to flow out for subsequent processing.
〔２〕第２の汚染水曝気装置
順次隣り合わせて複数段に連設された前記第１の汚染水曝気装置を含み、
該複数段に連設された汚染水曝気装置のうち最前段の汚染水曝気装置におけるポンプは外部から前記汚染水を吸引して該ポンプに対応する前記曝気ユニットの曝気ノズルへ該汚染水を供給するポンプであり、
各隣り合う該汚染水曝気装置のうち前段の汚染水曝気装置における前記気水分離室の放水部は後段の汚染水曝気装置のポンプの吸水口に接続されている（直接又は配管等を介して接続されている）汚染水曝気装置。
[2] A second contaminated water aeration apparatus comprising the first contaminated water aeration apparatus sequentially arranged adjacent to each other in a plurality of stages,
Among the contaminated water aeration apparatuses connected in a plurality of stages, the pump in the front stage contaminated water aeration apparatus sucks the contaminated water from the outside and supplies the contaminated water to the aeration nozzle of the aeration unit corresponding to the pump. Pump to
Of each adjacent contaminated water aeration apparatus, the water discharge part of the air / water separation chamber in the preceding stage contaminated water aeration apparatus is connected to the water inlet of the pump of the subsequent stage contaminated water aeration apparatus (directly or via a pipe or the like). Contaminated water aeration device connected.
（１−１）第１の汚染水曝気装置について
第１の汚染水曝気装置によると、汚染水の曝気は、ポンプで汚染水を曝気ユニットの曝気ノズルへ供給し、該曝気ノズルで汚染水に空気を混合して曝気しつつ気水混合水として放出することで行われ、該曝気ノズルは、該ノズルでの噴出水流により生じる負圧により該噴出水流へ向け空気を導入混合させるノズルであるから、汚染水を全体的に簡単、確実に効率よく十分曝気することができる。
(1-1) About the 1st contaminated water aeration apparatus According to the 1st contaminated water aeration apparatus, the aeration of contaminated water supplies the contaminated water to the aeration nozzle of the aeration unit with a pump, and converts it into the contaminated water with the aeration nozzle. It is performed by mixing air and releasing it as air-water mixed water while aerating, and the aeration nozzle is a nozzle that introduces and mixes air toward the ejected water flow by the negative pressure generated by the ejected water flow at the nozzle In addition, the contaminated water can be aerated easily, reliably and efficiently as a whole.
曝気ノズルからの曝気された気水混合水は気水分離室へ放出され、該気水分離室の水槽部へ落下到達する途中で、また、該水槽部に受け入れられてからでも、或いは、曝気ノズルに水槽部内へ延びるパイプが接続さているような場合は該水槽部内において、該気水混合水から揮発性有機化合物が容易に揮発し、空気とともに水から脱離し、該水槽部上方のガス保持空間部に水から分離された揮発性有機化合物ガス含有空気が保持される。 The aerated mixed water aerated from the aeration nozzle is discharged to the water separation chamber and falls to the water tank section of the water / water separation chamber, or after being received by the water tank section, or aeration When a pipe that extends into the water tank is connected to the nozzle, the volatile organic compound easily volatilizes from the gas-water mixture in the water tank, desorbs from the water together with the air, and holds the gas above the water tank. Air containing volatile organic compound gas separated from water is held in the space.
水槽部に溜まった水は、そのまま放流しても人体に害がないなど問題のないときは、放水部からそのまま放流することができ、或いは該放水部から次の処理に向け流出させることができる。 When there is no problem such as harming the human body even if the water collected in the water tank is discharged as it is, it can be discharged from the water discharge part as it is, or it can be discharged from the water discharge part for the next treatment. .
ガス保持空間部に溜まる揮発性有機化合物ガス含有空気は、揮発性有機化合物ガス除去装置等へガス放出部から流出させることができる。 The volatile organic compound gas-containing air that accumulates in the gas holding space can be discharged from the gas discharge unit to a volatile organic compound gas removal device or the like.
第１の汚染水曝気装置によると、従来なら要求されていた曝気のための給気ブロア等が必要とされず、また、曝気ノズルは構造簡単に済ませることができるから、装置コストを安価に抑えることができるとともに、ポンプを運転すれば汚染水曝気及び揮発性有機化合物の揮発脱離を行えるのでランニングコストを低く抑えることができる。 According to the first contaminated water aeration apparatus, an air supply blower for aeration, which has been conventionally required, is not required, and the structure of the aeration nozzle can be simplified, so that the apparatus cost can be reduced. In addition, if the pump is operated, the contaminated water can be aerated and the volatile organic compound can be volatilized and desorbed, so that the running cost can be kept low.
前記曝気ノズルとして、前記ポンプから送られてくる汚染水を噴出させるノズル部と、該ノズル部からの噴出水流を通過させる筒部とを含み、該筒部は、該噴出水流により該筒部内に発生する負圧により該噴出水流へ向け空気を導入する空気導入路を有している曝気ノズルを例示できる。
前記第２の汚染水曝気装置、後述する汚染水曝気装置や汚染水処理装置における曝気ノズルについても同様の曝気ノズルを採用できる。
The aeration nozzle includes a nozzle part for ejecting contaminated water sent from the pump, and a cylinder part for allowing the jet water flow from the nozzle part to pass through, and the cylinder part is inserted into the cylinder part by the jet water flow. The aeration nozzle which has the air introduction path which introduces air toward this jet water flow with the negative pressure which generate | occur | produces can be illustrated.
The same aeration nozzle can also be adopted for the aeration nozzle in the second contaminated water aeration apparatus, the later-described contaminated water aeration apparatus, and the contaminated water treatment apparatus.
前記気水分離室の水槽部として、該気水分離室へ前記曝気ユニットの曝気ノズルから放出されてくる放出水を汚染度の高いものと低いものとに分離して、汚染度の低いものを次へ放出できるように、前記曝気ユニットの曝気ノズルからの放出水を受け入れる第１水槽部と、該第１水槽部からの溢水を流入させる第２水槽部とを含む水槽部を例示できる。このように水槽部が第１、第２の水槽部を含むものであるときは、前記放水部はより汚染度の低い水が溜まる該第２水槽部に対して設けることができる。
前記第２の汚染水曝気装置、後述する汚染水曝気装置や汚染水処理装置における水槽部についても同様の水槽部を採用できる。
As the water tank section of the air / water separation chamber, the discharged water discharged from the aeration nozzle of the aeration unit into the air / water separation chamber is separated into a high contamination level and a low contamination level, A water tank part including a first water tank part that receives the water discharged from the aeration nozzle of the aeration unit and a second water tank part that allows the overflow of the first water tank part to flow in can be exemplified. Thus, when a water tank part contains the 1st, 2nd water tank part, the said water discharge part can be provided with respect to this 2nd water tank part in which water with a lower pollution degree accumulates.
The same water tank part can be adopted for the water tank part in the second contaminated water aeration apparatus, the contaminated water aeration apparatus and the contaminated water treatment apparatus described later.
（２−１）第２の汚染水曝気装置について
第２の汚染水曝気装置は、第１の汚染水曝気装置を複数段に連設して汚染水の曝気処理能力及び汚染水からの揮発性有機化合物の揮発脱離処理能力を高めたものである。
各段の汚染水曝気装置は、第１の汚染水曝気装置と同様に、汚染水を従来より全体的に簡単、確実に曝気してそれだけよく揮発性有機化合物を揮発脱離させることができるとともにランニングコストを低く抑えることができ、従って、第２の汚染水曝気装置も全体として、汚染水を全体的に簡単、確実に曝気してそれだけよく揮発性有機化合物を揮発脱離させることができるとともに、汚染水処理能力が大きい割りにはランニングコストを低く抑えることができる。
(2-1) Second contaminated water aeration apparatus The second contaminated water aeration apparatus includes a plurality of stages of the first contaminated water aeration apparatus, and the aeration treatment capacity of the contaminated water and the volatility from the contaminated water. It enhances the volatile desorption capacity of organic compounds.
As with the first contaminated water aeration apparatus, the contaminated water aeration apparatus at each stage can aerate contaminated water as a whole more easily and reliably and volatilely desorb volatile organic compounds. The running cost can be kept low. Therefore, the second contaminated water aeration apparatus as a whole can aerated contaminated water easily and surely and volatilely desorbs volatile organic compounds. The running cost can be kept low for a large contaminated water treatment capacity.
第２の汚染水曝気装置においては、前記複数段に連設された第１タイプの汚染水曝気装置の前記気水分離室のガス保持空間部は互いに連通していてもよい。 In the second contaminated water aeration apparatus, the gas holding space portions of the air / water separation chambers of the first type of contaminated water aeration apparatus connected in a plurality of stages may communicate with each other.
また、第２の汚染水曝気は構造を簡素化するために、前記複数段に連設された第１の汚染水曝気装置の気水分離室が一つの統合気水分離室に包含されていてもよい。そして、該複数段に連設された第１汚染水曝気装置の気水分離室のそれぞれにおける前記水槽部及びガス保持空間部は該統合気水分離室に包含され、該複数段に連設された第１汚染水曝気装置の気水分離室の前記ガス放出部は一つに統合されて該統合気水分離室に対し設けられていてもよい。 In order to simplify the structure of the second contaminated water aeration, the air / water separation chambers of the first contaminated water aeration apparatus connected in a plurality of stages are included in one integrated air / water separation chamber. Also good. The water tank portion and the gas holding space portion in each of the air / water separation chambers of the first contaminated water aeration apparatus connected to the plurality of stages are included in the integrated air / water separation chamber and connected to the plurality of stages. The gas discharge part of the steam / water separation chamber of the first contaminated water aeration apparatus may be integrated into one and provided for the integrated steam / water separation chamber.
〔３〕本発明の第２の課題を解決する汚染水曝気装置について
本発明は前記第２の課題を解決するために、
全体を一体的に搬送、設置可能に全体が一体的に組み上げられてユニット化されている前記第１、第２の汚染水曝気装置も提供する。
[3] Contaminated water aeration apparatus for solving the second problem of the present invention In order to solve the second problem of the present invention,
The first and second contaminated water aeration apparatuses are also provided in which the whole is integrally assembled and unitized so that the whole can be transported and installed.
前記第１、第２の汚染水曝気装置のいずれについても、それが全体的に一体的に組み上げられてユニット化されていなくても、処理対象汚染水の汚染の程度に応じて複数連設して用いることもできる。 A plurality of the first and second contaminated water aeration apparatuses are connected in series according to the degree of contamination of the contaminated water to be treated, even if they are assembled and integrated as a whole. Can also be used.
しかし、第１、第２の汚染水曝気装置のいずれについても、全体を一体的に搬送、設置可能に全体が一体的に組み上げられてユニット化されていることで、容易に搬送したり、設置したりでき、汚染水の汚染の程度に応じて容易に複数段に、且つ、汚染水曝気装置設置現場の状況（スペース等）に応じてそれぞれの配置の自由度高く連設して用いることができる。 However, both the first and second contaminated water aeration devices can be transported and installed easily by being assembled and united as a whole so that they can be transported and installed as a whole. It can be easily used in multiple stages according to the degree of contamination of the contaminated water, and connected in a highly flexible manner according to the situation (space, etc.) of the contaminated water aeration apparatus installation site. it can.
〔４〕本発明の第３、第４の課題を解決する汚染水処理装置について
本発明は前記第３の課題を解決するため、
揮発性有機化合物を含有する汚染水を曝気して該汚染水から揮発性有機化合物を揮発脱離させ、揮発脱離した揮発性有機化合物ガスを含有する空気から揮発性有機化合物ガスを除去する処理を行う汚染水処理装置であり、
前記本発明に係る汚染水曝気装置のいずれかと、該汚染水曝気装置の気水分離室のガス放出部にガス導入口部が接続された（直接又は配管等を介して接続された）揮発性有機化合物ガス除去装置と、該気水分離室のガス放出部から該揮発性有機化合物ガス除去装置へ揮発性有機化合物ガス含有空気を引き入れ通過させるためのブロアとを含む汚染水処理装置を提供する。
[4] Contaminated water treatment apparatus for solving the third and fourth problems of the present invention In order to solve the third problem, the present invention
A process in which contaminated water containing a volatile organic compound is aerated, the volatile organic compound is volatilized and desorbed from the contaminated water, and the volatile organic compound gas is removed from the air containing the volatilized and desorbed volatile organic compound gas. Is a contaminated water treatment device,
Volatility in which a gas inlet port is connected (directly or via a pipe or the like) to any one of the contaminated water aeration apparatus according to the present invention and a gas discharge part of the air / water separation chamber of the contaminated water aeration apparatus Provided is a contaminated water treatment apparatus comprising: an organic compound gas removal device; and a blower for drawing and passing air containing volatile organic compound gas from the gas discharge portion of the gas / water separation chamber to the volatile organic compound gas removal device. .
この汚染水処理装置における汚染水曝気装置は前記第１の汚染水曝気装置、第２の汚染水曝気装置のいずれでもよく、また、前記ユニット化された装置でもよい。 The contaminated water aeration apparatus in the contaminated water treatment apparatus may be either the first contaminated water aeration apparatus or the second contaminated water aeration apparatus, or may be the unitized apparatus.
この汚染水処理装置によると、汚染水曝気装置の部分で汚染水を全体的に簡単、確実に曝気してそれだけよく揮発性有機化合物を揮発脱離させることができ、そのためのランニングコストは低く抑えることができる。さらに、ブロアを運転して汚染水曝気装置の気水分離室のガス保持空間部に溜まる揮発性有機化合物ガス含有空気をガス放出部から揮発性有機化合物ガス除去装置へ引き入れ、該揮発性有機化合物ガス含有空気から揮発性有機化合物ガスを除去処理できる。 According to this contaminated water treatment device, the contaminated water can be aerated easily and reliably in the contaminated water aeration device, and volatile organic compounds can be volatilized and desorbed as much as possible, and the running cost for that purpose is kept low. be able to. Further, the volatile organic compound gas-containing air accumulated in the gas holding space of the air / water separation chamber of the contaminated water aeration apparatus is drawn into the volatile organic compound gas removing apparatus by operating the blower, and the volatile organic compound The volatile organic compound gas can be removed from the gas-containing air.
このとき、ブロアの能力は、汚染水曝気装置の気水分離室のガス保持空間部に溜まる揮発性有機化合物ガス含有空気を吸引して揮発性有機化合物ガス除去装置へ引き入れ通過させることができる程度のもので足りるので消費電力は低く済み、従って、揮発性有機化合物ガス除去処理のランニングコストも低く抑えることができる。 At this time, the capacity of the blower is such that the volatile organic compound gas-containing air accumulated in the gas holding space of the air / water separation chamber of the contaminated water aeration apparatus can be sucked and drawn into the volatile organic compound gas removal apparatus. Therefore, the power consumption is low, so that the running cost of the volatile organic compound gas removal process can be kept low.
前記ブロアは前記揮発性有機化合物ガス除去装置の空気吐出口部に接続してもよい（直接又は配管等を介して接続してもよい。）
そして、汚染水曝気装置における曝気ユニットは前記気水分離室に連設されたカバー室内に内蔵配置し、該カバー室には該カバー室内へ空気を導入するための空気導入口部を設け、前記ブロアの空気吐出口を該空気導入口部に接続（直接又は配管等を介して接続）してもよい。
The blower may be connected to the air discharge port of the volatile organic compound gas removal device (directly or via a pipe or the like).
The aeration unit in the contaminated water aeration apparatus is disposed in a cover chamber connected to the air / water separation chamber, and the cover chamber is provided with an air introduction port for introducing air into the cover chamber, You may connect the air discharge port of a blower to this air inlet part (it connects directly or via piping etc.).
このように構成することで、ブロアの運転により加熱された空気をカバー室内へ供給して曝気ユニットの曝気ノズルにおいて汚染水へ混合させることができ、それにより汚染水からの揮発性有機化合物の揮発脱離をそれだけ円滑に行わせることができる。
なお、本発明においては、汚染水からの揮発性有機化合物の揮発脱離を円滑化するために曝気ユニットの曝気ノズルへ吸引される空気を加熱する空気加熱手段を設けてもよく、ブロアを揮発性有機化合物ガス除去装置の空気吐出口部に接続し、該ブロアの空気吐出口を前記カバー室の空気導入口部に接続する場合、該ブロア等は、該空気加熱手段の１例を兼ねている、と言える。
With this configuration, the air heated by the operation of the blower can be supplied into the cover chamber and mixed with the contaminated water at the aeration nozzle of the aeration unit, thereby volatilizing the volatile organic compound from the contaminated water. Desorption can be performed smoothly.
In the present invention, an air heating means for heating the air sucked into the aeration nozzle of the aeration unit may be provided to facilitate the volatile desorption of the volatile organic compound from the contaminated water. When connecting to the air discharge port of the volatile organic compound gas removal apparatus and connecting the air discharge port of the blower to the air introduction port of the cover chamber, the blower also serves as an example of the air heating means I can say.
汚染水曝気装置として前記ユニット化された汚染水曝気装置を採用することで本発明に係る第４の課題を解決できる。 The 4th subject which concerns on this invention can be solved by employ | adopting the said unitized contaminated water aeration apparatus as a contaminated water aeration apparatus.
本発明によると、後述する、本来目指している第２の効果等を達成できるが、それに付随して次の第１の効果等も達成できる。
すなわち本発明によると、揮発性有機化合物を含有する汚染水を曝気して該汚染水から揮発性有機化合物を揮発脱離させる汚染水曝気装置であって、汚染水を従来より全体的に簡単、確実に曝気してそれだけよく揮発性有機化合物を揮発脱離させることができるとともにランニングコストを低く抑えることができる（以上、「第１効果」と総称する。）汚染水曝気装置を提供することができる。
According to the present invention, it is possible to achieve the second effect that is originally aimed for, which will be described later, but the following first effect and the like can also be achieved.
That is, according to the present invention, a contaminated water aeration apparatus that aerated contaminated water containing a volatile organic compound and volatilizes and desorbs the volatile organic compound from the contaminated water. To provide a polluted water aeration apparatus that can reliably aerate and devolatilize and desorb volatile organic compounds as much as possible and can keep running costs low (hereinafter collectively referred to as “first effect”). it can.
本発明によると、前記第１効果を発揮できるとともに、全体を一体的に容易に搬送したり、設置したりでき、汚染水の汚染の程度に応じて容易に複数段に、且つ、それぞれの配置の自由度高く連設して用いることができる汚染水曝気装置を提供することができる。 According to the present invention, the first effect can be exhibited, and the whole can be easily transported and installed as a whole, easily arranged in multiple stages according to the degree of contamination of the contaminated water, and the arrangement of each. It is possible to provide a contaminated water aeration apparatus that can be continuously used with a high degree of freedom.
本発明によると、揮発性有機化合物を含有する汚染水を曝気して該汚染水から揮発性有機化合物を揮発脱離させ、揮発脱離した揮発性有機化合物ガスを含有する空気から揮発性有機化合物ガスを除去する処理を行う汚染水処理装置であって、汚染水を従来より全体的に簡単、確実に曝気してそれだけよく揮発性有機化合物を揮発脱離させることができるとともにそのためのランニングコストを低く抑えることができ、揮発脱離した揮発性有機化合物ガスを含有する空気からの該揮発性有機化合物ガスの除去をランニングコストを低く抑制して行える（以上、「第２効果」と総称する）汚染水処理装置を提供することができる。 According to the present invention, contaminated water containing a volatile organic compound is aerated to volatilize and desorb the volatile organic compound from the contaminated water, and the volatile organic compound is removed from the air containing the volatile organic compound gas. This is a contaminated water treatment device that removes gas, and it is easier and more reliable to aerate contaminated water as a whole, thereby volatile organic compounds can be volatilized and desorbed as much as possible. The volatile organic compound gas can be removed from the air containing the volatile organic compound gas that has been volatilized and desorbed at a low running cost (hereinafter collectively referred to as “second effect”). A contaminated water treatment apparatus can be provided.
本発明は、前記第２効果を発揮できるとともに、揮発性有機化合物を含有する汚染水を曝気して該汚染水から揮発性有機化合物を揮発脱離させる汚染水曝気装置の部分を一体的に容易に搬送したり、設置したりでき、汚染水の汚染の程度に応じて容易に複数段に、且つ、それぞれの汚染水曝気装置部分の配置の自由度高く増設して汚染水処理能力を高めることができる汚染水処理装置を提供することができる。 According to the present invention, the part of the contaminated water aeration apparatus that can exert the second effect and aerate the contaminated water containing the volatile organic compound to volatilize and desorb the volatile organic compound from the contaminated water is easily integrated. It can be transported and installed in multiple stages, and can easily be installed in multiple stages according to the degree of contamination of the contaminated water, and increase the degree of freedom of arrangement of each contaminated water aeration unit to increase the capacity of contaminated water treatment It is possible to provide a contaminated water treatment apparatus capable of
以下本発明の実施形態を図面を参照して説明する。
図１は汚染水曝気装置の１例１０を含む汚染水処理装置の例Ａを示している。
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows an example A of a contaminated water treatment apparatus including an example 10 of the contaminated water aeration apparatus.
図１の汚染水曝気装置１０はポンプ１１を設置したポンプ設置部１の上に気水分離室２を搭載固定し、該気水分離室の上にカバー室３を搭載固定し、カバー室３内において気水分離室２の天井壁２１に曝気ユニット４を設置したものであり、これらは全体を一体的に搬送し、所望の地上場所に設置できるように、全体が一体的に組み上げられ、ユニット化されている。 The contaminated water aeration apparatus 10 in FIG. 1 has an air / water separation chamber 2 mounted and fixed on a pump installation portion 1 where a pump 11 is installed, and a cover chamber 3 is mounted and fixed on the air / water separation chamber. Inside, the aeration unit 4 is installed on the ceiling wall 21 of the air / water separation chamber 2, and these are integrally assembled so that they can be transported as a whole and installed at a desired ground location, It is unitized.
曝気ユニット４は並列接続された２個の曝気ノズル４１を含んでおり、各曝気ノズル４１はその吐出口を気水分離室２内へ臨ませて気水分離室天井壁２１に固定されている。
曝気ノズル４１は図２に示すように、ノズル部４１１と、該ノズル部からの噴出水を気水分離室２内へ向け通過させる円筒部４１２とを有している。円筒部４１２の周壁には、円筒部内を通過する噴出水により円筒部内に生じる負圧により円筒部外から該噴出水へ向け空気を導入混合させるための空気導入路４１３が等中心角度間隔で複数本形成されている。各空気導入路４１３はノズル部４１１の水噴出方向の中心線に垂直に交わる線の方向に形成されている。
The aeration unit 4 includes two aeration nozzles 41 connected in parallel, and each aeration nozzle 41 is fixed to the ceiling wall 21 of the air / water separation chamber with its discharge port facing the air / water separation chamber 2. .
As shown in FIG. 2, the aeration nozzle 41 includes a nozzle portion 411 and a cylindrical portion 412 that allows water ejected from the nozzle portion to pass into the air-water separation chamber 2. The peripheral wall of the cylindrical portion 412 has a plurality of air introduction paths 413 at equal central angular intervals for introducing and mixing air from the outside of the cylindrical portion toward the ejected water by negative pressure generated in the cylindrical portion by the ejected water passing through the cylindrical portion. The book is formed. Each air introduction path 413 is formed in the direction of a line perpendicular to the center line of the nozzle portion 411 in the water ejection direction.
なお、図１において曝気ユニット４におけるＰは曝気ユニット４へ供給される水の圧力を検出する圧力計であり、Ｖ１はメインテナンス時等において必要に応じて閉成可能の手動弁である。 In FIG. 1, P in the aeration unit 4 is a pressure gauge that detects the pressure of water supplied to the aeration unit 4, and V1 is a manual valve that can be closed as necessary during maintenance or the like.
カバー室３は気密に形成されており、一側壁３１に空気導入口部３１１を備えている。 カバー室３は気密に形成されているが、メインテナンス等のために図示省略の開閉扉を開けて内部へアクセスできるようになっており、該扉は気密に閉じることができる。 The cover chamber 3 is formed in an airtight manner, and includes an air inlet 311 on one side wall 31. Although the cover chamber 3 is formed in an airtight manner, an open / close door (not shown) is opened for maintenance and the like so that the inside can be accessed, and the door can be closed in an airtight manner.
気水分離室２は気密に形成されているが、メインテナンス等のために図示省略の開閉扉を開けて内部へアクセスできるようになっており、該扉は気密に閉じることができる。
気水分離室２内には、水槽部２２が設けられており、水槽部２２の上方空間はガス保持空間部２３となっている。
ガス保持空間部２３に対してガス放出部２３１が設けられている。ガス放出部２３１はカバー室３内へ延び出て、カバー室３の一側壁３１に達している。
Although the air / water separation chamber 2 is formed in an airtight manner, an opening / closing door (not shown) is opened for maintenance and the like so that the inside can be accessed, and the door can be airtightly closed.
A water tank part 22 is provided in the steam-water separation chamber 2, and a space above the water tank part 22 is a gas holding space part 23.
A gas discharge portion 231 is provided for the gas holding space portion 23. The gas discharge part 231 extends into the cover chamber 3 and reaches one side wall 31 of the cover chamber 3.
水槽部２２は、曝気ノズル４１の下方に位置する第１水槽部２２１とそれに隣り合う第２水槽部２２２とからなっている。各曝気ノズル４１はパイプ４２により第１水槽部２２１内へ通じている。 The water tank unit 22 includes a first water tank unit 221 positioned below the aeration nozzle 41 and a second water tank unit 222 adjacent thereto. Each aeration nozzle 41 communicates with the inside of the first water tank section 221 through a pipe 42.
第２水槽部２２２に対して水位検知センサＳ２が設けられている。センサＳ２は気水分離室天井壁２１から垂下されている。
センサＳ２は、第２水槽部２２２の底付近まで達する共通電極ｅ１と、それに隣り合い、それより若干短い水位下限検出電極ｅ２と、電極ｅ１に隣り合う水位上限検出電極ｅ３を含んでいる。センサＳ２により検出される水位情報は水位制御部Ｃｏｎｔに入力される。
A water level detection sensor S <b> 2 is provided for the second water tank unit 222. The sensor S2 is suspended from the ceiling wall 21 of the air / water separation chamber.
The sensor S2 includes a common electrode e1 that reaches the vicinity of the bottom of the second water tank section 222, a water level lower limit detection electrode e2 that is adjacent to and slightly shorter than the common electrode e1, and a water level upper limit detection electrode e3 that is adjacent to the electrode e1. The water level information detected by the sensor S2 is input to the water level controller Cont.
第２水槽部２２２の底部には放水部２２３が設けられている。放水部２２３はポンプ設置部１へ延び出ている。
図１においてＶ２は水槽部２２１、２２２のそれぞれの底部に接続された手動弁で、メインテナンス時等に必要に応じ開成することができる。
A water discharge part 223 is provided at the bottom of the second water tank part 222. The water discharge part 223 extends to the pump installation part 1.
In FIG. 1, V2 is a manual valve connected to the bottom of each of the water tank units 221 and 222, and can be opened as needed during maintenance.
ポンプ１１は、本例では地中から別途ポンプで汲み上げられて地上タンクＴに収容された揮発性有機化合物含有の汚染水Ｗ１をストレーナ（フィルタ）ＳＴを介して吸引し、レジューサＲを介して曝気ユニット４の各曝気ノズル４１へ供給することができる。
図１において１１１はポンプ始動時にポンプへ呼び水を供給するための呼び水供給部である。
In this example, the pump 11 sucks contaminated water W1 containing a volatile organic compound, which is separately pumped from the ground and stored in the ground tank T, through the strainer (filter) ST, and aerated through the reducer R. It can be supplied to each aeration nozzle 41 of the unit 4.
In FIG. 1, reference numeral 111 denotes a priming water supply unit for supplying priming water to the pump when the pump is started.
タンクＴにも、前記センサＳ２と同構造の水位センサＳ１が設けられている。センサＳ１により検出されるタンク内水位情報も水位制御部Ｃｏｎｔに入力される。
なお、図１に参照符号Ｈ１、Ｈ２、３１１’で示される部分については後述する。
The tank T is also provided with a water level sensor S1 having the same structure as the sensor S2. Water level information in the tank detected by the sensor S1 is also input to the water level control unit Cont.
The parts indicated by reference numerals H1, H2, 311 ′ in FIG. 1 will be described later.
以上説明した汚染水曝気装置１０の隣に揮発性有機化合物ガス除去装置５が設置されている。ガス除去装置５は内部に、本例では活性炭充填部５１を有している。
ガス除去装置５は下部にガス導入口部５２を、上部に空気吐出口部５３を有している。 ガス導入口部５２は気水分離室２のガス放出部２３１に配管接続されており、空気吐出口部５３はカバー室３の空気導入口部３１１に配管接続されている。
活性炭充填部５１はそこを下方から上方へ通過する揮発性有機化合物ガス含有空気から揮発性有機化合物ガスを吸着除去できる。
A volatile organic compound gas removal device 5 is installed next to the contaminated water aeration device 10 described above. The gas removal apparatus 5 has an activated carbon filling part 51 in this example.
The gas removal device 5 has a gas introduction port 52 at the lower part and an air discharge port 53 at the upper part. The gas introduction port 52 is connected to the gas discharge unit 231 of the steam / water separation chamber 2 by piping, and the air discharge port 53 is connected to the air introduction port 311 of the cover chamber 3 by piping .
The activated carbon filling unit 51 can adsorb and remove the volatile organic compound gas from the volatile organic compound gas-containing air passing therethrough from below to above.
以上説明した汚染水処理装置Ａによると、ポンプ１１にてタンクＴ内の汚染水Ｗ１が曝気ユニット４の各曝気ノズル４１へ供給される。ポンプ１１による汚染水Ｗ１の曝気ノズル４１への供給は、水位制御部Ｃｏｎｔの指示のもとに、タンクＴのセンサＳ１がタンクＴ内水位の下限水位より下方への低下を示していないこと及び第２水槽部２２２のセンサＳ２が水槽部内水位の上限水位より上方への上昇を示していないことを条件として行われる。 According to the contaminated water treatment apparatus A described above, the contaminated water W1 in the tank T is supplied to each aeration nozzle 41 of the aeration unit 4 by the pump 11. The supply of the contaminated water W1 to the aeration nozzle 41 by the pump 11 indicates that the sensor S1 of the tank T does not show a decrease below the lower limit water level in the tank T under the instruction of the water level controller Cont. It is performed on condition that the sensor S2 of the second water tank unit 222 does not indicate an upward rise from the upper limit water level of the water level in the water tank unit.
ポンプ１１にてタンクＴ内の汚染水Ｗ１が曝気ユニット４の各曝気ノズル４１へ供給されると、各曝気ノズル４１で該汚染水に空気が混合されて曝気されつつ気水混合水として気水分離室２の第１水槽部２２１へ放出される。 When the contaminated water W1 in the tank T is supplied to each aeration nozzle 41 of the aeration unit 4 by the pump 11, air is mixed with the contaminated water at each aeration nozzle 41 and aerated as the aerated water mixture. It is discharged into the first water tank part 221 of the separation chamber 2.
このとき、各曝気ノズル４１は、該ノズルでの噴出水流により生じる負圧により該噴出水流へ向け空気を導入混合させるノズルであるから、ノズル４１へ供給されてくる汚染水Ｗ１を全体的に簡単、確実に効率よく十分曝気することができる。 At this time, each aeration nozzle 41 is a nozzle that introduces and mixes air toward the squirting water flow by the negative pressure generated by the squirting water flow at the nozzle, and therefore the contaminated water W1 supplied to the nozzle 41 is simplified as a whole. It is possible to reliably and efficiently aerate sufficiently.
曝気ノズル４１からの曝気された気水混合水は気水分離室２へ放出されて第１水槽部２２１に受け入れられ、該水槽部内の気水混合水から揮発性有機化合物が容易に揮発し、空気とともに水から脱離し、該水槽部上方のガス保持空間部２３に保持される。 The aerated water / water mixture aerated from the aeration nozzle 41 is discharged to the air / water separation chamber 2 and received by the first water tank unit 221, and the volatile organic compound is easily volatilized from the water / water mixed water in the water tank unit, It desorbs from water together with air and is held in the gas holding space 23 above the water tank.
第１水槽部２２１から溢れた水Ｗ２は第２水槽部２２２へ流入する。このとき、未だ水Ｗ２に残っていることがあり得る揮発性有機化合物は、第１水槽部２２１から第２水槽部２２２への溢流時に、さらには第２水槽部２２２において、水Ｗ２から揮発脱離してガス保持空間部２３に保持される。 Water W2 overflowing from the first water tank unit 221 flows into the second water tank unit 222. At this time, the volatile organic compound that may still remain in the water W2 is volatilized from the water W2 in the overflow from the first water tank unit 221 to the second water tank unit 222, and further in the second water tank unit 222. Desorbed and held in the gas holding space 23.
第２水槽部２２１に溜まった水Ｗ２は、揮発性有機化合物が人体に害を与えない程度まで除去されているときには放水部２２３から自然へ放流することができる。しかし、第２水槽部２２１の水Ｗ２をさらに処理するときは、次の処理装置へ流出させればよい。次の処理装置としては、例えば水に含まれていることがある鉄分等の除去処理装置を挙げることができる。
なお、このような鉄分等の除去処理は汚染水の曝気処理及び揮発性有機化合物の揮発脱離処理の前に行ってもよく、後に行ってもよい。
また、水Ｗ２の汚染の程度によっては、水Ｗ２をさらにもう一つ以上の汚染水曝気装置１０で処理してもよい。
The water W2 collected in the second water tank part 221 can be discharged naturally from the water discharge part 223 when the volatile organic compound is removed to such an extent that the human body is not harmed. However, when the water W2 in the second water tank unit 221 is further processed, it may be discharged to the next processing apparatus. As the next processing apparatus, for example, a processing apparatus for removing iron or the like that may be contained in water can be cited.
Such a removal process of iron or the like may be performed before or after the aeration process of contaminated water and the volatile organic compound volatilization / desorption process.
Further, depending on the degree of contamination of the water W2, the water W2 may be further processed by one or more contaminated water aeration devices 10.
一方、ガス保持空間部２３に保持された揮発性有機化合物ガス含有空気ａ１はブロア６の運転によりガス除去装置５へ導入され、そこで揮発性有機化合物ガスが活性炭充填部５１で吸着除去され、その後の、ブロア運転により加熱された（例えば４０℃〜５０℃程度に或いはさらに高温に加熱された）空気ａがブロア６からカバー室３内へ供給され、各曝気ノズル４１における汚染水Ｗ１の曝気に供される。このように、加熱空気ａが汚染水曝気に供されることで、汚染水Ｗ１からの揮発性有機化合物の揮発脱離が円滑化される。 On the other hand, the volatile organic compound gas-containing air a1 held in the gas holding space portion 23 is introduced into the gas removal device 5 by the operation of the blower 6, where the volatile organic compound gas is adsorbed and removed by the activated carbon filling portion 51, and thereafter The air a heated by the blower operation (for example, heated to about 40 ° C. to 50 ° C. or even higher temperature) is supplied from the blower 6 into the cover chamber 3 to aerate the contaminated water W1 in each aeration nozzle 41. Provided. In this way, the heated air a is subjected to contaminated water aeration, so that the volatile organic compounds are volatilized and desorbed from the contaminated water W1.
なお、ブロア６からの吐出空気をカバー室３内へ供給するとともに或いはブロア６からの吐出空気をカバー室３内へ供給することに代えて、曝気ノズル４１へ吸引される空気を加熱するヒータを設けてもよい。例えば、図１に鎖線で示すようにカバー室３に空気加熱ヒータＨ１を設置したり、カバー室３の空気導入口部３１１’に空気加熱ヒータＨ２を取り付けて、これを通ってカバー室３内へ入る空気を加熱するようにしてもよく、さらには、ヒータＨ２を通してカバー室３内へ空気を送るブロア（図示省略）等を設けることもできる。このようなヒータＨ１等による空気加熱手段を、ブロア６からの吐出空気をカバー室３内へ供給するとともに或いはブロア６からの吐出空気をカバー室３内へ供給することに代えて採用することも可能である。
これらの点は、後述する汚染水曝気装置１００や汚染水処理装置Ｂにおいても同様である。
In addition, instead of supplying the discharge air from the blower 6 into the cover chamber 3 or supplying the discharge air from the blower 6 into the cover chamber 3, a heater for heating the air sucked into the aeration nozzle 41 is provided. It may be provided. For example, as shown by a chain line in FIG. 1, an air heater H1 is installed in the cover chamber 3 or an air heater H2 is attached to the air inlet 311 ′ of the cover chamber 3 and passes through the inside of the cover chamber 3 The air entering the inside may be heated, and a blower (not shown) for sending air into the cover chamber 3 through the heater H2 may be provided. Such air heating means using the heater H1 or the like may be employed instead of supplying the discharge air from the blower 6 into the cover chamber 3 or supplying the discharge air from the blower 6 into the cover chamber 3. Is possible.
These points are the same in the contaminated water aeration apparatus 100 and the contaminated water treatment apparatus B described later.
以上説明した汚染水処理装置の汚染水曝気装置１０によると、従来なら要求されていた曝気のための給気ブロア等が必要とされず、また、曝気ノズルは構造簡単に済ませることができるから、装置コストを安価に抑えることができるとともに、ポンプ１１を運転すれば汚染水曝気及び揮発性有機化合物の揮発脱離を行えるのでランニングコストを低く抑えることができる。 According to the contaminated water aeration apparatus 10 of the contaminated water treatment apparatus described above, an air supply blower or the like for aeration that has been conventionally required is not required, and the structure of the aeration nozzle can be simplified. The apparatus cost can be kept low, and if the pump 11 is operated, the aeration of contaminated water and the volatile organic compound can be volatilized and desorbed, so that the running cost can be kept low.
また、汚染水曝気装置１０は、これに注目すると、全体を一体的に搬送、設置可能に全体が一体的に組み上げられてユニット化されていることで、容易に搬送したり、設置したりでき、汚染水の汚染の程度に応じて容易に複数段に、且つ、汚染水曝気装置設置現場の状況（スペース等）に応じてそれぞれの配置の自由度高く連設して用いることができる。 In addition, the contaminated water aeration apparatus 10 can be easily transported and installed by paying attention to this, because the whole is integrally assembled and unitized so that it can be transported and installed as a whole. In addition, it can be easily used in a plurality of stages according to the degree of contamination of the contaminated water, and can be arranged in series with a high degree of freedom in arrangement according to the situation (space, etc.) of the contaminated water aeration apparatus installation site.
また、汚染水処理装置Ａ全体としてみると、汚染水曝気装置１０の部分で汚染水を全体的に簡単、確実に曝気してそれだけよく揮発性有機化合物を揮発脱離させることができ、そのためのランニングコストは低く抑えることができる。さらに、ブロア６を運転して汚染水曝気装置１０の気水分離室２のガス保持空間部２３に溜まる揮発性有機化合物ガス含有空気をガス放出部２３１から揮発性有機化合物ガス除去装置５へ引き入れ、該揮発性有機化合物ガス含有空気から揮発性有機化合物ガスを除去処理できる。 Further, when viewed as the entire contaminated water treatment apparatus A, the contaminated water can be aerated easily and reliably by the contaminated water aeration apparatus 10 as a whole, and the volatile organic compounds can be volatilized and desorbed as much. Running costs can be kept low. Furthermore, draws volatile organic compound gas containing air accumulated in the gas holding space 23 of the steam-water separating chamber 2 of the contaminated water aerator 10 driving a blower 6 from the gas discharge unit 231 to the volatile organic compound gas removal device 5 The volatile organic compound gas can be removed from the air containing the volatile organic compound gas.
このとき、ブロア６の能力は、汚染水曝気装置１０の気水分離室２のガス保持空間部２３に溜まる揮発性有機化合物ガス含有空気ａ１を吸引して揮発性有機化合物ガス除去装置５へ引き入れ通過させることができる程度のもので足りるので消費電力は低く済み、従って、揮発性有機化合物ガス除去処理のランニングコストも低く抑えることができる。 At this time, the capability of the blower 6 is that the volatile organic compound gas-containing air a <b> 1 accumulated in the gas holding space 23 of the steam / water separation chamber 2 of the contaminated water aeration apparatus 10 is sucked and drawn into the volatile organic compound gas removal apparatus 5. Since it is sufficient that it can be passed, the power consumption is low, and therefore the running cost of the volatile organic compound gas removal process can be kept low.
また、汚染水処理装置Ａとしてみると、揮発性有機化合物を含有する汚染水Ｗ１を曝気して該汚染水から揮発性有機化合物を揮発脱離させる汚染水曝気装置１０の部分を一体的に容易に搬送したり、設置したりでき、汚染水Ｗ１の汚染の程度に応じて容易に複数段に、且つ、それぞれの汚染水曝気装置１０部分の配置の自由度高く増設することができ、それにより汚染水処理能力を高めることが可能である。 Further, in the case of the contaminated water treatment apparatus A, the part of the contaminated water aeration apparatus 10 that aerates the contaminated water W1 containing the volatile organic compound and volatilizes and desorbs the volatile organic compound from the contaminated water is easily integrated. Can be easily installed in multiple stages according to the degree of contamination of the contaminated water W1, and each of the contaminated water aeration devices 10 can be added with a high degree of freedom. It is possible to increase the capacity to treat contaminated water.
次に図３を参照して、本発明に係る汚染水曝気装置の他の例１００を含む汚染水処理装置の例Ｂについて説明する。
汚染水曝気装置１００は、図１に示す汚染水曝気装置１０を２段に隣り合わせて連設し、且つ、気水分離室を一つに統合して簡素化したものである。曝気装置１００と併設される揮発性有機化合物ガス除去装置５Ｂ及びブロア６Ｂは、曝気装置１００の処理能力が増していることに合わせてガス除去能力を向上させるために、図１のガス除去装置５やブロア６より大型のものであるが基本構造はガス除去装置５やブロア６と同じものである。
Next, an example B of the contaminated water treatment apparatus including another example 100 of the contaminated water aeration apparatus according to the present invention will be described with reference to FIG.
The contaminated water aeration apparatus 100 is simplified by connecting the contaminated water aeration apparatus 10 shown in FIG. 1 adjacent to each other in two stages and integrating the air / water separation chamber into one. The volatile organic compound gas removal device 5B and the blower 6B provided together with the aeration device 100 are provided with the gas removal device 5 of FIG. 1 in order to improve the gas removal capability in accordance with the increase in the processing capability of the aeration device 100. The basic structure is the same as that of the gas removing device 5 and the blower 6 although it is larger than the blower 6.
汚染水曝気装置１００は、ポンプ１１、１２を設置したポンプ設置部１Ｂの上に気水分離室２Ｂを搭載固定し、該気水分離室の上にカバー室３Ｂを搭載固定し、カバー室３Ｂ内において気水分離室２Ｂの天井壁２１Ｂに二つの曝気ユニット４を設置したものである。 これらは全体を一体的に搬送し、所望の地上場所に設置できるように、全体が一体的に組み上げられ、ユニット化されている。 The contaminated water aeration apparatus 100 mounts and fixes the air / water separation chamber 2B on the pump installation portion 1B where the pumps 11 and 12 are installed, and mounts and fixes the cover chamber 3B on the air / water separation chamber. Inside, two aeration units 4 are installed on the ceiling wall 21B of the air / water separation chamber 2B. These are integrally assembled and unitized so that they can be transported as a whole and installed at a desired ground location.
各曝気ユニット４は図１の曝気装置１０における曝気ユニット４と同構造のものである。曝気ユニット４に関連する曝気ノズル４１等の部分については図１と同じ参照符号を付してある。 Each aeration unit 4 has the same structure as the aeration unit 4 in the aeration apparatus 10 of FIG. Portions such as the aeration nozzle 41 related to the aeration unit 4 are denoted by the same reference numerals as those in FIG.
カバー室３Ｂは気密に形成されており、一側壁３１Ｂに空気導入口部３１１Ｂを備えている。カバー室３Ｂは気密に形成されているが、メインテナンス等のために図示省略の開閉扉を開けて内部へアクセスできるようになっており、該扉は気密に閉じることができる。 The cover chamber 3B is formed in an airtight manner, and includes an air inlet 311B on one side wall 31B. Although the cover chamber 3B is formed in an airtight manner, an open / close door (not shown) is opened for maintenance and the like so that the inside can be accessed, and the door can be closed in an airtight manner.
気水分離室２Ｂは気密に形成されているが、メインテナンス等のために図示省略の開閉扉を開けて内部へアクセスできるようになっており、該扉は気密に閉じることができる。 気水分離室２Ｂ内には、図１の曝気装置１０におけると同様の水槽部２２が隣り合わせて２段に設けられており、それら水槽部２２の上方空間は各水槽部に対し共通のガス保持空間部２３Ｂとなっている。
ガス保持空間部２３Ｂに対してガス放出部２３１Ｂが設けられている。ガス放出部２３１Ｂはカバー室３Ｂ内へ延び出て、カバー室３Ｂの一側壁３１Ｂに達している。
Although the air / water separation chamber 2B is formed in an airtight manner, an open / close door (not shown) is opened for maintenance and the like so that the inside can be accessed, and the door can be closed in an airtight manner. In the steam / water separation chamber 2B, the water tank parts 22 similar to those in the aeration apparatus 10 of FIG. 1 are provided adjacently in two stages, and the upper space of the water tank parts 22 holds a common gas for each water tank part. It is a space portion 23B.
A gas discharge portion 231B is provided for the gas holding space portion 23B. The gas discharge part 231B extends into the cover chamber 3B and reaches one side wall 31B of the cover chamber 3B.
各水槽部２２は、曝気ノズル４１の下方に位置する第１水槽部２２１とそれに隣り合う第２水槽部２２２とからなっている。各曝気ノズル４１はパイプ４２により第１水槽部２２１内へ通じている。 Each water tank unit 22 includes a first water tank unit 221 positioned below the aeration nozzle 41 and a second water tank unit 222 adjacent thereto. Each aeration nozzle 41 communicates with the inside of the first water tank section 221 through a pipe 42.
前段の第２水槽部２２２に対して図１の装置１０におけるものと同じ水位検知センサＳ２が設けられている。後段の第２水槽部２２２に対しても同じ構造の水位検知センサＳ３が設けられている。センサＳ２、Ｓ３により検出される水位情報は水位制御部Ｃｏｎｔに入力される。 The same water level detection sensor S2 as that in the apparatus 10 of FIG. A water level detection sensor S3 having the same structure is provided for the second water tank section 222 at the rear stage. The water level information detected by the sensors S2 and S3 is input to the water level controller Cont.
各第２水槽部２２２の底部には放水部２２３Ｂが設けられている。放水部２２３Ｂはポンプ設置部１Ｂへ延び出ている。
図３においてＶ２は水槽部２２１、２２２のそれぞれの底部に接続された手動弁で、メインテナンス時等に必要に応じ開成することができる。
A water discharge part 223 </ b> B is provided at the bottom of each second water tank part 222. The water discharge part 223B extends to the pump installation part 1B.
In FIG. 3, V2 is a manual valve connected to the bottom of each of the water tank portions 221 and 222, and can be opened as needed during maintenance.
ポンプ１１は、本例では地中から別途ポンプで汲み上げられて地上タンクＴに収容された揮発性有機化合物含有の汚染水Ｗ１をストレーナ（フィルタ）ＳＴを介して吸引し、レジューサＲを介して前段曝気ユニット４の各曝気ノズル４１へ供給することができる。
ポンプ１２は、前段の第２水槽部２２２の放水部２２３Ｂから該水槽部２２２内の水を後段の曝気ユニット４の各曝気ノズル４１へ供給できる。
図３において１１１はポンプ１１始動時にポンプ１１へ呼び水を供給するための呼び水供給部である。
In this example, the pump 11 sucks the volatile organic compound-containing contaminated water W1 separately pumped from the ground and accommodated in the ground tank T through the strainer (filter) ST, and passes through the reducer R to the previous stage. It can supply to each aeration nozzle 41 of the aeration unit 4.
The pump 12 can supply the water in the water tank part 222 from the water discharge part 223 </ b> B of the second water tank part 222 at the front stage to each aeration nozzle 41 of the aeration unit 4 at the rear stage.
In FIG. 3, reference numeral 111 denotes a priming water supply unit for supplying priming water to the pump 11 when the pump 11 is started.
図３においても、タンクＴにセンサＳ２と同構造の水位センサＳ１が設けられている。センサＳ１により検出されるタンク内水位情報も水位制御部Ｃｏｎｔに入力される。 Also in FIG. 3, the tank T is provided with a water level sensor S1 having the same structure as the sensor S2. Water level information in the tank detected by the sensor S1 is also input to the water level control unit Cont.
以上説明した汚染水曝気装置１００の隣に揮発性有機化合物ガス除去装置５Ｂが設置されている。ガス除去装置５Ｂは内部に活性炭充填部５１Ｂを有している。
ガス除去装置５Ｂは下部にガス導入口部５２Ｂを、上部に空気吐出口部５３Ｂを有している。
ガス導入口部５２Ｂは気水分離室２Ｂのガス放出部２３１Ｂに配管接続されており、空気吐出口部５３Ｂはカバー室３Ｂの空気導入口部３１１Ｂに配管接続されている。
A volatile organic compound gas removal device 5B is installed next to the contaminated water aeration device 100 described above. The gas removal device 5B has an activated carbon filling part 51B inside.
The gas removing device 5B has a gas introduction port portion 52B at the lower portion and an air discharge port portion 53B at the upper portion.
The gas introduction port 52B is connected to the gas discharge part 231B of the steam / water separation chamber 2B by piping, and the air discharge port 53B is connected to the air introduction port 311B of the cover chamber 3B by piping.
以上説明した汚染水処理装置Ｂによると、ポンプ１１にてタンクＴ内の汚染水Ｗ１が前段の曝気ユニット４の各曝気ノズル４１へ供給される。ポンプ１１による汚染水Ｗ１の曝気ノズル４１への供給は、水位制御部Ｃｏｎｔの指示のもとに、タンクＴのセンサＳ１がタンクＴ内水位の下限水位より下方への低下を示していないこと及び第２水槽部２２２のセンサＳ２が水槽部内水位の上限水位より上方への上昇を示していないことを条件として行われる。 According to the contaminated water treatment apparatus B described above, the contaminated water W1 in the tank T is supplied to each aeration nozzle 41 of the aeration unit 4 in the previous stage by the pump 11. The supply of the contaminated water W1 to the aeration nozzle 41 by the pump 11 indicates that the sensor S1 of the tank T does not show a decrease below the lower limit water level in the tank T under the instruction of the water level controller Cont. It is performed on condition that the sensor S2 of the second water tank unit 222 does not indicate an upward rise from the upper limit water level of the water level in the water tank unit.
ポンプ１１にてタンクＴ内の汚染水Ｗ１が前段曝気ユニット４の各曝気ノズル４１へ供給されると、各曝気ノズル４１で該汚染水に空気が混合されて曝気されつつ気水混合水として気水分離室２の前段の第１水槽部２２１へ放出される。このとき、ノズル４１へ供給されてくる汚染水Ｗ１を全体的に簡単、確実に効率よく十分曝気することができる。 When the contaminated water W1 in the tank T is supplied to each aeration nozzle 41 of the upstream aeration unit 4 by the pump 11, the air is mixed with the contaminated water at each aeration nozzle 41 and aerated as air-water mixed water. It is discharged to the first water tank section 221 in the previous stage of the water separation chamber 2. At this time, the contaminated water W <b> 1 supplied to the nozzle 41 can be aerated sufficiently easily, reliably and efficiently as a whole.
前段の曝気ノズル４１からの曝気された気水混合水は気水分離室２へ放出されて前段の第１水槽部２２１に受け入れられ、該水槽部内の気水混合水から揮発性有機化合物が容易に揮発し、空気とともに水から脱離し、該水槽部上方のガス保持空間部２３Ｂに保持される。 The aerated water mixture aerated from the preceding aeration nozzle 41 is discharged to the air / water separation chamber 2 and received by the first water tank part 221 in the preceding stage, and volatile organic compounds are easily formed from the air / water mixed water in the water tank part. Volatilizes, desorbs from the water together with air, and is held in the gas holding space 23B above the water tank.
前段の第１水槽部２２１から溢れた水Ｗ２は前段の第２水槽部２２２へ流入する。このとき、未だ水Ｗ２に残っていることがあり得る揮発性有機化合物が、第１水槽部２２１から第２水槽部２２２への溢流時に、さらには第２水槽部２２２において揮発脱離してガス保持空間部２３Ｂに保持される。 Water W2 overflowing from the first water tank section 221 in the previous stage flows into the second water tank section 222 in the previous stage. At this time, the volatile organic compound that may still remain in the water W2 is volatilized and desorbed in the second water tank part 222 when it overflows from the first water tank part 221 to the second water tank part 222, and gas It is held in the holding space 23B.
前段の第２水槽部２２２に溜まった水Ｗ２は、後段のポンプ１２により後段の曝気ユニット４の各曝気ノズル４１へ供給され、そこで全体的に簡単、確実に効率よく十分曝気され、気液混合水となって後段の第１水槽部２２１に受け入れられ、該水槽部内の気水混合水から揮発性有機化合物が容易に揮発し、空気とともに水から脱離し、該水槽部上方のガス保持空間部２３Ｂに保持される。 The water W2 accumulated in the second water tank section 222 in the front stage is supplied to each aeration nozzle 41 of the aeration unit 4 in the rear stage by the pump 12 in the rear stage. It becomes water and is received by the first water tank unit 221 in the subsequent stage, and the volatile organic compound is easily volatilized from the air-water mixed water in the water tank unit, desorbs from the water together with the air, and the gas holding space part above the water tank unit 23B.
ポンプ１２による水Ｗ２の曝気ノズル４１への供給は、水位制御部Ｃｏｎｔの指示のもとに、センサＳ２が前段水槽部２２２内水位の下限水位より下方への低下を示していないこと及び後段第２水槽部２２２のセンサＳ３が水槽部内水位の上限水位より上方への上昇を示していないことを条件として行われる。
後段の第１水槽部２２１から溢れた水Ｗ３は後段の第２水槽部２２２へ流入する。このとき、未だ水Ｗ３に残っていることがあり得る揮発性有機化合物が揮発脱離してガス保持空間部２３Ｂに保持される。
The supply of the water W2 to the aeration nozzle 41 by the pump 12 is based on the instruction from the water level control unit Cont that the sensor S2 does not show a decrease below the lower limit water level of the water level in the front water tank unit 222 and the second stage. This is performed on condition that the sensor S3 of the two water tank section 222 does not indicate an upward rise from the upper limit water level of the water level in the water tank section.
Water W3 overflowing from the first water tank section 221 at the rear stage flows into the second water tank section 222 at the rear stage. At this time, the volatile organic compound that may still remain in the water W3 is volatilized and desorbed and held in the gas holding space 23B.
後段の第２水槽部２２１に溜まった水Ｗ３は、揮発性有機化合物が人体に害を与えない程度まで除去されているときには放水部２２３Ｂから自然へ放流することができる。しかし、第２水槽部２２１の水Ｗ３をさらに処理するときは、次の処理装置へ流出させればよい。次の処理装置としては、例えば水に含まれていることがある鉄分等の除去処理装置を挙げることができる。
このような鉄分等の除去処理は汚染水の曝気処理及び揮発性有機化合物の揮発脱離処理の前に行ってもよく、後に行ってもよい。
また、水Ｗ３の汚染の程度によっては、水Ｗ３をさらにもう一つ以上の汚染水曝気装置１００で処理してもよい。
The water W3 accumulated in the second water tank section 221 at the rear stage can be discharged naturally from the water discharge section 223B when the volatile organic compound is removed to such an extent that the human body is not harmed. However, when the water W3 in the second water tank unit 221 is further processed, it may be discharged to the next processing apparatus. As the next processing apparatus, for example, a processing apparatus for removing iron or the like that may be contained in water can be cited.
Such a removal process of iron or the like may be performed before or after the aeration process of contaminated water and the volatile organic compound volatilization / desorption process.
Further, depending on the degree of contamination of the water W3, the water W3 may be further processed by one or more contaminated water aeration apparatuses 100.
一方、ガス保持空間部２３Ｂに保持された揮発性有機化合物ガス含有空気ａ１はブロア６Ｂの運転によりガス除去装置５Ｂへ導入され、そこで揮発性有機化合物ガスが活性炭充填部５１Ｂで吸着除去され、その後の、ブロア運転により加熱された（例えば４０℃〜５０℃程度に或いはさらに高温に加熱された）空気ａがブロア６Ｂからカバー室３Ｂ内へ供給され、各曝気ノズル４１における汚染水Ｗ１やＷ２の曝気に供される。このように、加熱空気ａが汚染水曝気に供されることで、汚染水Ｗ１、Ｗ２からの揮発性有機化合物の揮発脱離が円滑化される。 On the other hand, the volatile organic compound gas-containing air a1 held in the gas holding space portion 23B is introduced into the gas removing device 5B by the operation of the blower 6B, where the volatile organic compound gas is adsorbed and removed by the activated carbon filling portion 51B. The air a heated by the blower operation (for example, heated to about 40 ° C. to 50 ° C. or higher temperature) is supplied from the blower 6B into the cover chamber 3B, and the contaminated water W1 and W2 in each aeration nozzle 41 are supplied. It is subjected to aeration. As described above, the heated air a is subjected to contaminated water aeration, so that volatile organic compounds from the contaminated water W1 and W2 can be volatilized and desorbed.
以上説明した汚染水処理装置Ｂの汚染水曝気装置１００においても、曝気のための給気ブロア等が必要とされず、また、曝気ノズルは構造簡単に済ませることができるから、装置コストを安価に抑えることができるとともに、ポンプ１１、１２を運転すれば汚染水曝気及び揮発性有機化合物の揮発脱離を行えるのでランニングコストを低く抑えることができる。 Also in the contaminated water aeration apparatus 100 of the contaminated water treatment apparatus B described above, an air supply blower or the like for aeration is not required, and the structure of the aeration nozzle can be simplified, so that the apparatus cost can be reduced. When the pumps 11 and 12 are operated, aeration of contaminated water and volatilization / desorption of volatile organic compounds can be performed, so that the running cost can be reduced.
また、汚染水曝気装置１００は、これに注目すると、全体を一体的に搬送、設置可能に全体が一体的に組み上げられてユニット化されていることで、容易に搬送したり、設置したりでき、汚染水の汚染の程度に応じて容易に複数段に、且つ、汚染水曝気装置設置現場の状況（スペース等）に応じてそれぞれの配置の自由度高く連設して用いることができる。 In addition, the polluted water aeration apparatus 100 can be easily transported and installed by paying attention to the fact that the whole is integrally assembled and unitized so that it can be transported and installed as a whole. In addition, it can be easily used in a plurality of stages according to the degree of contamination of the contaminated water, and can be arranged in series with a high degree of freedom in arrangement according to the situation (space, etc.) of the contaminated water aeration apparatus installation site.
また、汚染水処理装置Ｂ全体としてみると、汚染水曝気装置１００の部分で汚染水を全体的に簡単、確実に曝気してそれだけよく揮発性有機化合物を揮発脱離させることができ、そのためのランニングコストは低く抑えることができる。さらに、ブロア６Ｂを運転して汚染水曝気装置１００の気水分離室２Ｂのガス保持空間部２３Ｂに溜まる揮発性有機化合物ガス含有空気をガス放出部２２３Ｂからガス除去装置５Ｂへ引き入れ、該揮発性有機化合物ガス含有空気から揮発性有機化合物ガスを除去処理できる。 Further, when viewed as a whole of the contaminated water treatment apparatus B, the contaminated water aeration apparatus 100 can aspirate the contaminated water as a whole easily and surely, and volatile organic compounds can be volatilized and desorbed as well. Running costs can be kept low. Further, the volatile organic compound gas-containing air that accumulates in the gas holding space 23B of the steam / water separation chamber 2B of the contaminated water aeration apparatus 100 by operating the blower 6B is drawn from the gas discharge part 223B to the gas removal device 5B. The volatile organic compound gas can be removed from the organic compound gas-containing air.
このとき、ブロア６Ｂの能力は、汚染水曝気装置１００の気水分離室２Ｂのガス保持空間部２３Ｂに溜まる揮発性有機化合物ガス含有空気ａ１を吸引してガス除去装置５Ｂへ引き入れ通過させることができる程度のもので足りるので消費電力は低く済み、従って、揮発性有機化合物ガス除去処理のランニングコストも低く抑えることができる。 At this time, the capability of the blower 6B is that the volatile organic compound gas-containing air a1 accumulated in the gas holding space 23B of the steam separation chamber 2B of the contaminated water aeration apparatus 100 is sucked and drawn into the gas removal device 5B. Since it is sufficient as much as possible, the power consumption is low, and therefore the running cost of the volatile organic compound gas removal process can be kept low.
また、汚染水処理装置Ｂとしてみると、汚染水曝気装置１００の部分を一体的に容易に搬送したり、設置したりでき、汚染水Ｗ１の汚染の程度に応じて容易に複数段に、且つ、それぞれの汚染水曝気装置１００の配置の自由度高く増設することができ、それにより汚染水処理能力を高めることが可能である。 Further, when viewed as the contaminated water treatment apparatus B, the part of the contaminated water aeration apparatus 100 can be easily transported and installed integrally, and easily in multiple stages according to the degree of contamination of the contaminated water W1, and In addition, it is possible to increase the degree of freedom of arrangement of each contaminated water aeration apparatus 100, thereby increasing the capacity of treating contaminated water.
本発明は揮発性有機化合物で汚染された地下水等の汚染水を曝気処理して揮発性有機化合物を揮発脱離させ、さらには揮発脱離した揮発性有機化合物ガスを含有する空気から揮発性有機化合物ガスを除去処理することに利用できる。 The present invention aeration treatment of contaminated water such as groundwater contaminated with volatile organic compounds to volatilize and desorb volatile organic compounds, and further volatile organic compounds from air containing volatile organic compound gas that has been volatilized and desorbed. It can be used to remove the compound gas.
Ａ、Ｂ 汚染水処理装置
１０、１００ 汚染水曝気装置
１、１Ｂ ポンプ設置部
１１、１２ ポンプ
１１１ 呼び水導入部
Ｒ レジューサ
２、２Ｂ 気水分離室
２１、２１Ｂ 天井壁
２２ 水槽部
２２１ 第１水槽部
２２２ 第２水槽部
２２３、２２３Ｂ 放水部
２３、２３Ｂ ガス保持空間部
２３１、２３１Ｂ ガス放出部
３、３Ｂ カバー室
３１、３１Ｂ カバー室の一側壁
３１１、３１１’、３１１Ｂ 空気導入口部
４ 曝気ユニット
４１ 曝気ノズル
４１１ ノズル部
４１２ 円筒部
４１３ 空気導入路
４２ パイプ
Ｖ１、Ｖ２ 弁
Ｐ 圧力計
５、５Ｂ 揮発性有機化合物ガス除去装置
５１、５１Ｂ 活性炭充填部
５２、５２Ｂ ガス導入口部
５３、５３Ｂ 空気吐出口部
６、６Ｂ ブロア
ＳＴ ストレーナ
Ｔ タンク
Ｓ１、Ｓ２、Ｓ３ 水位検出センサ
ｅ１、ｅ２、ｅ３ 電極
Ｃｏｎｔ 水位制御部
Ｗ１、Ｗ２、Ｗ３ 水
ａ１ 揮発性有機化合物ガス含有空気
ａ 空気
Ｈ１、Ｈ２ 空気加熱ヒータ
A, B Contaminated water treatment device 10, 100 Contaminated water aeration device 1, 1B Pump installation unit 11, 12 Pump 111 Nominal water introduction unit R Reducer 2, 2B Air / water separation chamber 21, 21B Ceiling wall 22 Water tank unit 221 First water tank unit 222 2nd water tank part 223, 223B Water discharge part 23, 23B Gas holding space part 231, 231B Gas discharge part 3, 3B Cover chamber 31, 31B One side wall 311, 311 ', 311B Air inlet part 4 Aeration unit 41 Aeration nozzle 411 Nozzle portion 412 Cylindrical portion 413 Air introduction path 42 Pipe V1, V2 Valve P Pressure gauge 5, 5B Volatile organic compound gas removal device 51, 51B Activated carbon filling portion 52, 52B Gas introduction port portion 53, 53B Air discharge port Sections 6 and 6B Blower ST Strainer T Tanks S1, S2, S3 Water level detection sensors e1, e2, e3 Electrode Co t level control unit W1, W2, W3 water a1 volatile organic compound gas containing air a air H1, H2 air heater
Claims (2)
順次隣り合わせて複数段に連設された汚染水曝気装置であって全体を一体的に搬送、設置可能に全体が一体的に組み上げられてユニット化されている汚染水曝気装置と、揮発性有機化合物ガス除去装置と、該揮発性有機化合物ガス除去装置へ揮発性有機化合物ガス含有空気を引き入れ通過させるためのブロアとを含んでおり、
前記各汚染水曝気装置は揮発性有機化合物を含有する汚染水を曝気して該汚染水から揮発性有機化合物を揮発脱離させる汚染水曝気装置であり、
揮発性有機化合物を含有する汚染水を吸引吐出するためのポンプと、
前記ポンプから汚染水供給を受け、該汚染水に空気を混合して曝気しつつ気水混合水として放出する１又は２以上の曝気ノズルを含む曝気ユニットと、
前記曝気ユニットの曝気ノズルから放出される気水混合水を受け入れるとともに該気水混合水から放出される揮発性有機化合物ガス含有空気を保持する気水分離室とを含んでおり、
前記曝気ノズルは、前記ポンプから送られてくる汚染水を噴出させるノズル部と、該ノズル部からの噴出水流を通過させる筒部とを含み、該筒部は、該噴出水流により該筒部内に発生する負圧により該噴出水流へ向け空気を導入混合する空気導入路を有しており、
前記気水分離室は、前記曝気ユニットの曝気ノズルからの放出水を受け入れる水槽部と、該水槽部に溜まる水を放流又は次の処理のために流出させるための放水部と、該水槽部上方のガス保持空間部と、該ガス保持空間部の揮発性有機化合物ガス含有空気を次の処理のために流出させるためのガス放出部とを含んでおり、
前記気水分離室の水槽部は、前記曝気ユニットの曝気ノズルからの放出水を受け入れる第１水槽部と、該第１水槽部からの溢水を流入させる第２水槽部とを含んでおり、前記放水部は該第２水槽部に対して設けられており、
前記順次隣り合わせて複数段に連設された汚染水曝気装置のうち最前段の汚染水曝気装置におけるポンプは外部から前記汚染水を吸引して該ポンプに対応する前記曝気ユニットの曝気ノズルへ該汚染水を供給するポンプであり、
各隣り合う該汚染水曝気装置のうち前段の汚染水曝気装置における前記気水分離室の放水部は後段の汚染水曝気装置のポンプの吸水口に接続されており、
前記複数段に連設された汚染水曝気装置の前記気水分離室のガス保持空間部は互いに連通しており、
前記揮発性有機化合物ガス除去装置は前記汚染水曝気装置の気水分離室のガス放出部にガス導入口部が接続されており、
前記揮発性有機化合物ガス除去装置へ揮発性有機化合物ガス含有空気を引き入れ通過させるための前記ブロアは前記汚染水曝気装置の気水分離室のガス放出部から該揮発性有機化合物ガス除去装置へ揮発性有機化合物ガス含有空気を引き入れ通過させるためのブロアであり、
前記曝気ユニットの曝気ノズルへ吸引される空気を加熱する空気加熱手段を備えており、
前記ブロアは前記揮発性有機化合物ガス除去装置の空気吐出口部に接続されており、前記曝気ユニットは前記気水分離室に連設されたカバー室内に内蔵配置されており、該カバー室には該カバー室内へ空気を導入するための空気導入口部が設けられており、前記ブロアの空気吐出口が該空気導入口部に接続されており、該ブロアは前記空気加熱手段の少なくとも一部を構成していることを特徴とする汚染水処理装置。 A process in which contaminated water containing a volatile organic compound is aerated, the volatile organic compound is volatilized and desorbed from the contaminated water, and the volatile organic compound gas is removed from the air containing the volatilized and desorbed volatile organic compound gas. Is a contaminated water treatment device,
Contaminated water aeration apparatus connected in multiple stages in sequence, adjacent to each other and transported and installed as a whole. A gas removal device and a blower for drawing and passing air containing volatile organic compound gas to the volatile organic compound gas removal device,
Each of the contaminated water aeration apparatuses is a contaminated water aeration apparatus that aerates contaminated water containing a volatile organic compound and volatilizes and desorbs the volatile organic compound from the contaminated water.
A pump for sucking and discharging contaminated water containing volatile organic compounds;
An aeration unit including one or two or more aeration nozzles that receive contaminated water supply from the pump and discharge the mixed water as air-water mixed water while aerated.
An air / water separation chamber for receiving air / water mixed water discharged from the aeration nozzle of the aeration unit and holding volatile organic compound gas-containing air released from the air / water mixed water;
The aeration nozzle includes a nozzle part for ejecting contaminated water sent from the pump, and a cylinder part for allowing a jet water flow from the nozzle part to pass through, and the cylinder part is inserted into the cylinder part by the jet water flow. It has an air introduction path for introducing and mixing air toward the jet water flow by the generated negative pressure,
The air / water separation chamber includes a water tank part that receives water discharged from the aeration nozzle of the aeration unit, a water discharge part for discharging water accumulated in the water tank part or flowing out for subsequent processing, and an upper part of the water tank part. A gas holding space part, and a gas discharge part for causing the volatile organic compound gas-containing air in the gas holding space part to flow out for the next processing ,
The water tank section of the air / water separation chamber includes a first water tank section that receives water discharged from the aeration nozzle of the aeration unit, and a second water tank section that allows the overflow of the first water tank section to flow in, A water discharge part is provided for the second water tank part,
Among the contaminated water aeration devices connected in a plurality of stages adjacent to each other in sequence, the pump in the foremost contaminated water aeration device sucks the contaminated water from the outside and supplies the contamination to the aeration nozzle of the aeration unit corresponding to the pump. A pump for supplying water,
The water discharge part of the air / water separation chamber in the preceding stage contaminated water aeration apparatus among the adjacent contaminated water aeration apparatuses is connected to the water inlet of the pump of the subsequent stage contaminated water aeration apparatus,
The gas holding space portions of the air / water separation chambers of the contaminated water aeration apparatus connected to the plurality of stages communicate with each other,
The volatile organic compound gas removal device has a gas inlet port connected to a gas discharge portion of a water separation chamber of the contaminated water aeration device,
The blower for drawing and passing the volatile organic compound gas-containing air to the volatile organic compound gas removing device volatilizes from the gas discharge part of the air / water separation chamber of the contaminated water aeration device to the volatile organic compound gas removing device. A blower for drawing in and passing air containing organic organic compound gas,
Air heating means for heating the air sucked into the aeration nozzle of the aeration unit,
The blower is connected to an air discharge port of the volatile organic compound gas removal device, and the aeration unit is disposed in a cover chamber connected to the air / water separation chamber. An air introduction port for introducing air into the cover chamber is provided, and an air discharge port of the blower is connected to the air introduction port, and the blower serves as at least a part of the air heating means. contaminated water treatment apparatus characterized by being constructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007153092A JP4923266B2 (en) | 2007-06-08 | 2007-06-08 | Contaminated water treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JP5027865B2 (en) * | 2009-06-24 | 2012-09-19 | 川幸産業株式会社 | Gas-liquid separator |
| JP5487486B2 (en) * | 2010-04-22 | 2014-05-07 | 株式会社ナガオカ | Mixed flow nozzle |
| JP6177726B2 (en) * | 2014-06-10 | 2017-08-09 | 東京都 | Contaminated water aeration purification apparatus and contaminated water aeration purification method |
| CN117303588B (en) * | 2023-11-09 | 2024-06-07 | 北京汇园生态科技有限公司 | High ammonia nitrogen wastewater treatment system and method |
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| JP3100504B2 (en) * | 1994-03-29 | 2000-10-16 | オルガノ株式会社 | Demineralized water production equipment |
| JP3453339B2 (en) * | 2000-03-08 | 2003-10-06 | 三菱重工業株式会社 | Degassing device |
| JP3859430B2 (en) * | 2000-06-09 | 2006-12-20 | 株式会社タクマ | Degassing method and degassing device |
| KR101006763B1 (en) * | 2002-05-02 | 2011-01-10 | 피터 드러몬드 맥널티 | System and method of water treatment |
| JP4128833B2 (en) * | 2002-09-17 | 2008-07-30 | 三菱マテリアル資源開発株式会社 | Method and system for treating contaminated water and organic exhaust gas |
| JP4018099B2 (en) * | 2004-11-10 | 2007-12-05 | エア・ウォーター・プラントエンジニアリング株式会社 | Device for removing dissolved oxygen in liquid and method for removing dissolved oxygen |
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