JPH0523691A - Treatment and device for organochlorine compound - Google Patents
Treatment and device for organochlorine compoundInfo
- Publication number
- JPH0523691A JPH0523691A JP3203592A JP20359291A JPH0523691A JP H0523691 A JPH0523691 A JP H0523691A JP 3203592 A JP3203592 A JP 3203592A JP 20359291 A JP20359291 A JP 20359291A JP H0523691 A JPH0523691 A JP H0523691A
- Authority
- JP
- Japan
- Prior art keywords
- reactor
- methane
- air
- mixed gas
- organic chlorine
- 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
Links
- 150000004045 organic chlorine compounds Chemical class 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000002351 wastewater Substances 0.000 claims abstract description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 22
- 239000001569 carbon dioxide Substances 0.000 claims description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 abstract description 17
- 239000000463 material Substances 0.000 abstract description 7
- 238000012856 packing Methods 0.000 abstract description 7
- 238000007664 blowing Methods 0.000 abstract 2
- 239000008246 gaseous mixture Substances 0.000 abstract 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 241000894006 Bacteria Species 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- -1 trichlorethylene Chemical class 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000852 hydrogen donor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000011197 physicochemical method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、有機塩素化合物の処理
方法に係り、特にトリクロロエチレンを含む排水、ある
いは地下水等を生物学的に分解処理する方法と装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating an organic chlorine compound, and more particularly to a method and apparatus for biologically decomposing wastewater containing trichlorethylene, groundwater or the like.
【０００２】[0002]
【従来の技術】トリクロロエチレンなどの有機塩素化合
物は、洗浄剤として半導体製造工場などで多用されてお
り、近年、地下水や土壌への汚染が深刻な社会問題にな
っている。これまでに行われてきたトリクロロエチレン
を含む用排水の処理方法は、エアストリッピング法、活
性炭吸着法、あるいは逆浸透膜法などであり、主として
物理化学的な方法であった。しかし、これらの方法は、
有害なトリクロロエチレンを分解して無害化する方法で
はなく、トリクロロエチレンを液相から気相へ、あるい
は活性炭のような吸着剤（固相）へ移行させることで、
水中から除去する方法に過ぎなかった。すなわち、トリ
クロロエチレンを分解して、無害化する処理方法の開発
が望まれていた。2. Description of the Related Art Organic chlorine compounds such as trichlorethylene are frequently used as cleaning agents in semiconductor manufacturing plants and the like, and in recent years, pollution of groundwater and soil has become a serious social problem. The treatment method of the waste water containing trichlorethylene that has been performed so far is an air stripping method, an activated carbon adsorption method, a reverse osmosis membrane method, or the like, which is mainly a physicochemical method. But these methods
Instead of decomposing harmful trichlorethylene to make it harmless, by transferring trichlorethylene from the liquid phase to the gas phase or to an adsorbent (solid phase) such as activated carbon,
It was just a way to remove it from the water. That is, the development of a treatment method for decomposing trichlorethylene to render it harmless has been desired.
【０００３】[0003]
【発明が解決しようとする課題】本発明、トリクロロエ
チレン等の有機塩素化合物を含有する水を、メタン酸化
細菌のような微生物の酸化作用によって、無害な炭酸ガ
ス、水、塩酸に分解する方法と装置を提供することを課
題とする。The present invention is a method and apparatus for decomposing water containing an organic chlorine compound such as trichlorethylene into harmless carbon dioxide gas, water and hydrochloric acid by the oxidizing action of microorganisms such as methane-oxidizing bacteria. The challenge is to provide.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、有機塩素化合物を含有する用排水を処
理する方法において、該用排水を内部に充填材を充填し
た反応器に流入し、該反応器にメタンと空気の混合ガス
を通気して処理することを特徴とする有機塩素化合物の
処理方法としたものである。前記処理方法において、メ
タンと空気の混合ガスは、反応初期には二酸化炭素を混
合し、反応中は反応器から排出する混合ガスを循環通気
するのがよく、また、処理水の一部は循環して原水中に
流入するのがよい。また、本発明では、有機塩素化合物
を含有する用排水を処理する装置において、原水流入
部、処理水流出部、散気装置及び充填材を充填した充填
層を有する反応器と、前記散気装置にメタンと空気の混
合ガスを通気する手段、反応器上部の排出ガスの一部を
散気装置に循環通気する手段及び処理水の一部を原水流
入部へ循環する手段を有することを特徴とする有機塩素
化合物の処理装置としたものである。In order to solve the above-mentioned problems, in the present invention, in a method for treating wastewater containing an organic chlorine compound, the wastewater flows into a reactor having a filler filled therein. Then, a method of treating an organic chlorine compound is characterized in that a mixed gas of methane and air is passed through the reactor for treatment. In the treatment method, it is preferable that the mixed gas of methane and air is mixed with carbon dioxide in the initial stage of the reaction and the mixed gas discharged from the reactor is circulated during the reaction, and a part of the treated water is circulated. Then it is better to flow into the raw water. Further, in the present invention, in a device for treating wastewater containing an organic chlorine compound, a reactor having a raw water inflow part, a treated water outflow part, an air diffuser and a packed bed filled with a filler, and the air diffuser. And a means for ventilating a mixed gas of methane and air, a means for circulating and ventilating a part of the exhaust gas at the upper part of the reactor to the diffuser, and a means for circulating a part of the treated water to the raw water inflow part. It is a processing device for an organic chlorine compound.
【０００５】次に、本発明を詳しく説明する。本発明
は、原水流入部、処理水流出部、散気装置を有する履蓋
された反応器の内部に充填材を充填し、散気装置からメ
タン／空気の混合ガスを通気すると共に反応器上部の一
部のガスを該散気装置を介して循環通気させ、処理水の
一部を原水流入部へ循環することによる有機塩素化合
物、特にトリクロロエチレンの生物処理方法である。反
応器内部では、充填材表面を中心にメタン酸化細菌を優
占種とする混合微生物が繁殖し、トリクロロエチレン等
の有機塩素化合物はメタン酸化細菌の酸化作用等を介し
て、最終的には二酸化炭素、水、および塩酸に分解され
る。メタン酸化細菌は、水素供与体としてメタン、電子
受容体として酸素を必要とするために、混合ガスはメタ
ンおよび酸素を含む必要がある。ガスの混合比は、メタ
ン酸化細菌の増殖に適切なメタン、酸素要求量の比率、
あるいは混合ガスの爆発性などを考慮して決定するが、
通常の場合は、メタン濃度５vol%以下が適切である。Next, the present invention will be described in detail. The present invention fills the inside of a reactor equipped with a raw water inflow part, a treated water outflow part, and an air diffuser with a filler, and ventilates a mixed gas of methane / air from the air diffuser and at the same time as the upper part of the reactor. Part of the gas is circulated and ventilated through the air diffuser, and a part of the treated water is circulated to the raw water inflow part, whereby a biological treatment method of an organic chlorine compound, particularly trichlorethylene. Inside the reactor, mixed microorganisms with methane-oxidizing bacteria as the dominant species proliferate mainly on the surface of the packing material, and organochlorine compounds such as trichlorethylene eventually become carbon dioxide through the oxidizing action of methane-oxidizing bacteria. Decomposes into water, hydrochloric acid. Since the methane-oxidizing bacteria require methane as a hydrogen donor and oxygen as an electron acceptor, the mixed gas needs to contain methane and oxygen. The mixing ratio of gas is the ratio of methane and oxygen demand suitable for the growth of methane-oxidizing bacteria,
Alternatively, it is decided in consideration of the explosiveness of the mixed gas,
Normally, a methane concentration of 5 vol% or less is appropriate.
【０００６】また、通常の汚染水中のトリクロロエチレ
ン等の有機塩素化合物濃度は、１ｐｐｍ以下の低濃度で
ある場合が多いので、混合ガスの必要量は少なく、散気
状態が不均一になる場合が認められる。このような場合
には、反応器内部でガスを循環通気して、低ガス供給時
においても、安定した散気状態を維持することが必要で
ある。また、原水の有機塩素化合物濃度が１ｐｐｍを越
える場合に、反応器内の微生物に阻害作用を引き起こす
場合が認められるために、本発明では処理水の一部を流
入部へ循環して、原水の有機塩素化合物濃度を低下させ
る。これにより、処理性能が安定化される。Further, the concentration of organic chlorine compounds such as trichlorethylene in ordinary contaminated water is often as low as 1 ppm or less, so that the required amount of mixed gas is small and the diffused state may be non-uniform. To be In such a case, it is necessary to circulate and ventilate the gas inside the reactor to maintain a stable diffused state even when a low gas is supplied. In addition, when the concentration of the organic chlorine compound in the raw water exceeds 1 ppm, it may be observed that the microorganisms in the reactor may have an inhibitory effect. Therefore, in the present invention, a part of the treated water is circulated to the inflow part to obtain the raw water. Decrease the concentration of organochlorine compounds. This stabilizes the processing performance.
【０００７】また本発明では、処理設備を立ちあげる運
転初期時において、混合ガス中に二酸化炭素を２〜３vo
l%含有させるのが有効である。メタン酸化細菌は、菌体
を生合成する際の炭素源として二酸化炭素を利用するの
で、設備の立ち上げを迅速かつ円滑に行うために、二酸
化炭素を外部から供給することが有効である。立ち上げ
運転完了後は、メタンの代謝産物として二酸化炭素が発
生するので、外部から二酸化炭素を供給する必要はな
い。なお、二酸化炭素を含むメタンガスとして、廃水処
理設備などから発生する消化ガスが利用可能である。ま
た立ち上げをさらに加速する方法として、メタン酸化細
菌を含む水田土壌などを反応器内に植種するのが有効で
ある。また、本発明において、反応器に充填する充填材
は、粒径：０．５〜４mmの粒状ろ材が好適に使用でき
る。充填材の形状として、膜状、繊維状、平板状などが
使用できるが、反応器の閉塞防止のために定期的に必要
な、充填材の洗浄操作の容易性を考えると、粒状ろ材を
使用するのが好適である。粒状ろ材の粒径は、洗浄作業
の容易性、および散気した混合ガスのろ材層での通過
性、などを考慮して適宜選択されるが、０．４〜５mmの
粒径が最適である。Further, according to the present invention, carbon dioxide is added to the mixed gas in an amount of 2 to 3 vo at the beginning of the operation when the treatment equipment is started up.
It is effective to contain l%. Since methane-oxidizing bacteria utilize carbon dioxide as a carbon source for biosynthesis of bacterial cells, it is effective to supply carbon dioxide from the outside in order to quickly and smoothly start up equipment. After the start-up operation is completed, carbon dioxide is generated as a metabolite of methane, so it is not necessary to supply carbon dioxide from the outside. As methane gas containing carbon dioxide, digestive gas generated from a wastewater treatment facility or the like can be used. Also, as a method for further accelerating the start-up, it is effective to plant paddy soil containing methane-oxidizing bacteria in the reactor. Further, in the present invention, as the filler to be filled in the reactor, a granular filter medium having a particle diameter of 0.5 to 4 mm can be preferably used. Membrane, fibrous, flat, etc. can be used as the shape of the packing material, but granular filter material is used considering the ease of cleaning the packing material, which is regularly required to prevent clogging of the reactor. Is preferred. The particle size of the granular filter medium is appropriately selected in consideration of easiness of cleaning work, passage of diffused mixed gas through the filter medium layer, etc., but the particle size of 0.4 to 5 mm is optimal. .
【０００８】また本発明では、散気装置からの通気速度
を０．０５Ｎｍ3／ｍ2 ・分以下とする。メタン酸化細
菌は、ろ材への付着力が一般細菌と比較して弱いので、
通気速度としてなるべく小さな値をとり、ろ材からの剥
離を防止する必要がある。また過剰な通気は、揮発し易
い有機塩素化合物、例えばトリクロロエチレンの反応器
からのリークを助長するので、その点からも通気速度は
小さい方がよい。本発明では、反応器内部に原水中のＳ
Ｓや増殖したメタン酸化細菌が蓄積していくので、内部
を定期的に洗浄する必要がある。洗浄方法は、通常の砂
ろ過塔の洗浄と同様に、空気洗浄および水洗浄を行う。
空気洗浄の空気線速度はなるべく低い値とするのが望ま
しい。また、通常運転時や洗浄時に排出される排ガス
は、揮発し易い有機塩素化合物、例えばトリクロロエチ
ン等を含むものなので、排ガス出口に活性炭吸着塔のよ
うな排ガス処理装置を設備するのが望ましい。また、洗
浄時に発生する排水は、ＳＳを固液分離した後に原水側
に戻して、洗浄排水中に含まれる有機塩素化合物を処理
する方法が適切である。In the present invention, the aeration rate from the air diffuser is set to 0.05 Nm 3 / m 2 · min or less. Since methane-oxidizing bacteria have weaker adhesion to filter media than general bacteria,
It is necessary to take a value as small as possible for the ventilation rate to prevent separation from the filter medium. Further, excessive ventilation promotes leakage of easily volatile organic chlorine compounds, such as trichlorethylene, from the reactor. From this point as well, it is preferable that the ventilation rate be low. In the present invention, S in raw water is placed inside the reactor.
Since S and proliferated methane-oxidizing bacteria accumulate, it is necessary to regularly clean the inside. As for the washing method, air washing and water washing are carried out in the same manner as the usual sand filtration tower washing.
It is desirable that the air linear velocity for air cleaning be as low as possible. Further, since the exhaust gas discharged during normal operation or cleaning contains an easily volatile organic chlorine compound such as trichloroethyne, it is desirable to install an exhaust gas treatment device such as an activated carbon adsorption tower at the exhaust gas outlet. In addition, it is appropriate that the wastewater generated at the time of cleaning is subjected to solid-liquid separation of SS and then returned to the raw water side to treat the organic chlorine compound contained in the cleaning wastewater.
【０００９】[0009]
【作用】本発明により、反応器内に有機塩素化合物、特
にトリクロロエチレン分解能力を有するメタン酸化細菌
を優占種とする混合微生物系を繁殖させることが可能
で、メタン酸化細菌等の酸化作用により、有機塩素化合
物、例えばトリクロロエチン等を分解、無害化すること
が可能である。According to the present invention, it is possible to propagate a mixed microbial system in which an organochlorine compound, particularly a methane-oxidizing bacterium having a trichloroethylene-decomposing ability, as a dominant species is propagated in a reactor, and an oxidizing action of the methane-oxidizing bacterium, It is possible to decompose and detoxify an organic chlorine compound such as trichloroethyne.
【００１０】[0010]
【実施例】以下、本発明を実施例により具体的に説明す
るが、本発明はこれらの実施例に限定されるものではな
い。
実施例１
図１に本発明の処理装置のフロー工程図を示す。図１に
おいて、１は反応器、２は充填材、３は散気装置、１１
は原水流入部、１２は処理水流出部を示す。原水は、管
８からポンプ６で反応器１に底部の原水流入部より流入
し、処理水は処理水流出部１２から管１０を通り排出さ
れる。その間に原水は、反応器１の充填材層２を通り、
含有している有機塩素化合物が生物処理され分解され
る。また、充填材層２の下部には散気装置３が設けら
れ、メタンと空気の混合ガスが管９から導入されてお
り、排出ガスの一部はガス排出口１５より、管１４を通
りブロワ５により、散気装置３に循環される。排出ガス
の残りは活性炭吸着塔４を通り、管１６より排出され
る。処理水の一部は、管１３から循環ポンプ７により原
水中に導入されて循環される。EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. Example 1 FIG. 1 shows a flow chart of the processing apparatus of the present invention. In FIG. 1, 1 is a reactor, 2 is a filler, 3 is an air diffuser, 11
Is a raw water inflow part, and 12 is a treated water outflow part. Raw water flows into the reactor 1 through the pipe 8 from the raw water inflow part at the bottom by the pump 6, and the treated water is discharged from the treated water outflow part 12 through the pipe 10. Meanwhile, the raw water passes through the packing material layer 2 of the reactor 1,
The contained organic chlorine compound is bioprocessed and decomposed. Further, an air diffuser 3 is provided below the filler layer 2, a mixed gas of methane and air is introduced from a pipe 9, and a part of the exhaust gas is blown from a gas outlet 15 through a pipe 14 to a blower. 5, the gas is circulated to the air diffuser 3. The rest of the exhaust gas passes through the activated carbon adsorption tower 4 and is discharged from the pipe 16. A part of the treated water is introduced from the pipe 13 into the raw water by the circulation pump 7 and circulated.
【００１１】図１に示す装置を用いて、次の運転条件で
トリクロロエチレンを含有する原水を処理した。
−運転条件−
・処理水量：１ｍ3 ／日
・循環水量：０〜３ｍ3 ／日
・原水トリクロロエチレン：１００〜２０００μｇ／ｌ
・反応器：内径５０cmφ×高さ２．５ｍ
・充填材：有効径１mm、均等係数１．３のアンスラサイ
トを１ｍ積層
・混合ガス：メタン２vol%の空気、メタン混合ガスを
０．１Ｎｌ／分で供給。ガス循環量２Ｎｌ／分とした。
・微生物源の植種：近隣の水田土壌１０リットルを反応
器に添加した。
・洗浄：月１〜２回の頻度で、空気洗浄と水洗浄を実
施。洗浄水は処理水を利用した。Raw water containing trichlorethylene was treated under the following operating conditions using the apparatus shown in FIG. -Operating conditions-Amount of treated water: 1 m 3 / day ・ Amount of circulating water: 0 to 3 m 3 / day ・ Raw water trichlorethylene: 100 to 2000 μg / l ・ Reactor: 50 cmφ inner diameter x 2.5 m height ・ Filler: 1 mm effective diameter , 1 m of anthracite with a uniform coefficient of 1.3 is mixed ・ Mixed gas: 2 vol% methane air, methane mixed gas is supplied at 0.1 Nl / min. The gas circulation rate was 2 Nl / min. -Plantation of microbial source: 10 liters of neighboring paddy soil was added to the reactor.・ Cleaning: Air cleaning and water cleaning are performed once or twice a month. Treated water was used as the washing water.
【００１２】図２に、トリクロロエチレンの水質経日変
化を示す。立ち上げ運転中は、混合ガス中に二酸化炭素
を２vol%の割合で添加した。立ち上げに要した日数は、
約３週間であった。原水のトリクロロエチレン５００〜
２０００μｇ／ｌに対して、処理水は５０〜２００μｇ
／ｌであり、水質汚濁防止法の排出基準を満足した。な
お、飲料水として使用するためには、３０μｇ／ｌ以下
に下げる必要があるので、本発明の処理に加えて、活性
炭処理などが必要と考えられる。FIG. 2 shows the daily change in water quality of trichlorethylene. During the startup operation, carbon dioxide was added to the mixed gas at a rate of 2 vol%. The number of days it took to launch was
It was about 3 weeks. Raw water trichlorethylene 500 ~
50-200 μg of treated water against 2000 μg / l
/ L, which satisfied the emission standards of the Water Pollution Control Law. Since it is necessary to reduce the amount to 30 μg / l or less in order to use it as drinking water, it is considered that activated carbon treatment or the like is necessary in addition to the treatment of the present invention.
【００１３】[0013]
【発明の効果】以上説明したように、本発明により、有
害物質である有機塩素化合物、特にトリクロロエチレン
を、生物学的に分解し、無害化することが可能である。
本発明は、これらの汚染地下水の処理や汚染土壌の修復
に、広く採用されていくものである。As described above, according to the present invention, it is possible to biologically decompose a harmful substance such as an organic chlorine compound, particularly trichlorethylene, to render it harmless.
The present invention is widely applied to the treatment of these contaminated groundwater and the restoration of contaminated soil.
【図１】本発明の処理装置のフロー工程図である。FIG. 1 is a flow process diagram of a processing apparatus of the present invention.
【図２】本発明の処理実績を示すグラフである。FIG. 2 is a graph showing a processing result of the present invention.
１：反応器、２：充填材層、３：散気装置、４：活性炭
吸着塔、５：循環ブロア（防爆）、６，７：ポンプ、
８：原水流入管、９：混合ガス導入管、１０：処理水流
出部、１１：原水流入部、１２：処理水流出部、１３：
処理水循環管、１４：排出ガス循環管1: Reactor, 2: Packing layer, 3: Air diffuser, 4: Activated carbon adsorption tower, 5: Circulating blower (explosion proof), 6, 7: Pump,
8: Raw water inlet pipe, 9: Mixed gas inlet pipe, 10: Treated water outlet, 11: Raw water inlet, 12: Treated water outlet, 13:
Treated water circulation pipe, 14: Exhaust gas circulation pipe
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山下 茂樹 神奈川県藤沢市本藤沢４丁目２番１号 株 式会社荏原総合研究所内 (72)発明者 下村 達夫 神奈川県藤沢市本藤沢４丁目２番１号 株 式会社荏原総合研究所内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Shigeki Yamashita 4-2-1 Honfujisawa, Fujisawa City, Kanagawa Prefecture Inside the EBARA Research Institute (72) Inventor Tatsuo Shimomura 4-2-1 Honfujisawa, Fujisawa City, Kanagawa Prefecture Inside the EBARA Research Institute
Claims (3)
する方法において、該用排水を内部に充填材を充填した
反応器に流入し、該反応器にメタンと空気の混合ガスを
通気して処理することを特徴とする有機塩素化合物の処
理方法。1. A method for treating wastewater containing an organochlorine compound, which comprises flowing the wastewater into a reactor having a filler filled therein, and ventilating the reactor with a mixed gas of methane and air. A method for treating an organic chlorine compound, which comprises treating.
期には二酸化炭素を混合し、反応中は反応器から排出す
る混合ガスを循環通気することを特徴とする請求項１記
載の有機塩素化合物の処理方法。2. The organochlorine according to claim 1, wherein the mixed gas of methane and air mixes carbon dioxide in the initial stage of the reaction, and circulates the mixed gas discharged from the reactor during the reaction. Compound treatment methods.
する装置において、原水流入部、処理水流出部、散気装
置及び充填材を充填した充填層を有する反応器と、前記
散気装置にメタンと空気の混合ガスを通気する手段、反
応器上部の排出ガスの一部を散気装置に循環通気する手
段及び処理水の一部を原水流入部へ循環する手段を有す
ることを特徴とする有機塩素化合物の処理装置。3. A reactor for treating wastewater containing an organic chlorine compound, comprising a raw water inflow section, a treated water outflow section, an air diffuser, and a reactor having a packed bed filled with a filler, and the air diffuser. It has a means for ventilating a mixed gas of methane and air, a means for circulating and ventilating a part of the exhaust gas at the upper part of the reactor to the diffuser, and a means for circulating a part of the treated water to the raw water inflow part. Treatment equipment for organic chlorine compounds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3203592A JP2608492B2 (en) | 1991-07-19 | 1991-07-19 | Method and apparatus for treating wastewater containing organochlorine compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3203592A JP2608492B2 (en) | 1991-07-19 | 1991-07-19 | Method and apparatus for treating wastewater containing organochlorine compounds |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0523691A true JPH0523691A (en) | 1993-02-02 |
| JP2608492B2 JP2608492B2 (en) | 1997-05-07 |
Family
ID=16476622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3203592A Expired - Lifetime JP2608492B2 (en) | 1991-07-19 | 1991-07-19 | Method and apparatus for treating wastewater containing organochlorine compounds |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2608492B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0292274A (en) * | 1988-09-27 | 1990-04-03 | Kokuritsu Kogai Kenkyusho | Bacterial decomposition of aliphatic chlorine compound and bacterium thereof |
| JPH02251298A (en) * | 1989-03-23 | 1990-10-09 | Akua Runesansu Gijutsu Kenkyu Kumiai | Methane fermentation apparatus |
-
1991
- 1991-07-19 JP JP3203592A patent/JP2608492B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0292274A (en) * | 1988-09-27 | 1990-04-03 | Kokuritsu Kogai Kenkyusho | Bacterial decomposition of aliphatic chlorine compound and bacterium thereof |
| JPH02251298A (en) * | 1989-03-23 | 1990-10-09 | Akua Runesansu Gijutsu Kenkyu Kumiai | Methane fermentation apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2608492B2 (en) | 1997-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH025478B2 (en) | ||
| US6087159A (en) | Odor control system | |
| JP2004130184A (en) | Method and apparatus for decontaminating soil | |
| JP4224542B2 (en) | Water treatment method and apparatus | |
| JP2609192B2 (en) | Biological dephosphorization nitrification denitrification treatment method of organic wastewater | |
| JPH07199B2 (en) | Organic wastewater treatment method | |
| JP3331623B2 (en) | Aerobic treatment equipment | |
| JP2007038044A (en) | Bio-desulfurization method and bio-desulfurization apparatus | |
| CN110102157A (en) | Ozone combines the device of biofilter processing organic exhaust gas | |
| JP2002192184A (en) | Powdery activated carbon-adding membrane separation activated sludge method | |
| JP2608492B2 (en) | Method and apparatus for treating wastewater containing organochlorine compounds | |
| JP3706574B2 (en) | Waste water denitrification treatment method and treatment equipment | |
| JP4289731B2 (en) | Method and apparatus for treating organic waste | |
| JP2000202481A (en) | Toc component removing device at ultrapure water production device | |
| JP2554560B2 (en) | Method and apparatus for biological regeneration of activated carbon | |
| JP3178979B2 (en) | Biological deodorizer | |
| JP3816701B2 (en) | Wastewater advanced purification method and apparatus | |
| JP2952125B2 (en) | Surfactant-containing water treatment equipment | |
| JP3447537B2 (en) | Microorganism deodorizing device and method of operating the device | |
| JP3769093B2 (en) | Advanced wastewater treatment device and advanced treatment method | |
| JPS63123496A (en) | Treatment of sewage | |
| JP2006175369A (en) | Water treatment method and water treatment apparatus | |
| JPH0523692A (en) | Treatment and device for organochlorine compound | |
| JPH0871591A (en) | Biological treatment of waste water containing ammonia nitrogen | |
| JPH06154792A (en) | Biomembrane filter |