JP2003117551A - Method and device for treating dioxins-containing waste water - Google Patents
Method and device for treating dioxins-containing waste waterInfo
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- JP2003117551A JP2003117551A JP2001312381A JP2001312381A JP2003117551A JP 2003117551 A JP2003117551 A JP 2003117551A JP 2001312381 A JP2001312381 A JP 2001312381A JP 2001312381 A JP2001312381 A JP 2001312381A JP 2003117551 A JP2003117551 A JP 2003117551A
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- membrane
- dioxins
- wastewater
- activated carbon
- water
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ダイオキシン類含
有排水の処理に係り、特に、ダイオキシン類を含む産業
排水や生活排水、最終処分場、焼却場などからの排水・
下水を処理するダイオキシン類含有排水の処理方法と装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the treatment of wastewater containing dioxins, and more particularly to the industrial wastewater containing domestic dioxins, domestic wastewater, wastewater from final disposal sites, incinerators, etc.
The present invention relates to a method and an apparatus for treating wastewater containing dioxins for treating sewage.
【０００２】[0002]
【従来の技術】従来、ダイオキシン類含有排水からダイ
オキシン類を除去するための処理方法は、次の方法が行
われていた。すなわち、ダイオキシン類含有排水に凝集
剤を添加し、ダイオキシン類を凝集沈殿させた後、分離
液をさらに砂ろ過槽に流入させ、上澄水中の懸濁物質を
分離除去し砂ろ過処理水を得る。この砂ろ過処理水を活
性炭吸着塔に流入させ、被処理水中のダイオキシン類を
吸着除去することにより、ダイオキシン類が分離された
水が得られる。上記の従来技術によるダイオキシン類含
有排水の処理では、以下に示す問題点がある。ダイオキ
シン類は、微細な懸濁物質に付着しているが、砂ろ過槽
における懸濁物質の捕捉率が低く、砂ろ過処理水にもダ
イオキシン類が流出する。さらに、活性炭吸着塔でも懸
濁物質の捕捉率は低く、懸濁物質による閉塞が生じるこ
ともあった。砂ろ過槽や活性炭吸着塔は、一定時間ごと
に清澄な水により逆流洗浄を行うため、大量の水が必要
となり、砂ろ過槽や活性炭吸着塔に蓄積したダイオキシ
ン類を含む洗浄排水が大量に生じる問題点もあった。2. Description of the Related Art Conventionally, the following method has been used as a treatment method for removing dioxins from wastewater containing dioxins. That is, a coagulant is added to wastewater containing dioxins to coagulate and precipitate dioxins, and then the separated liquid is further flowed into a sand filtration tank to separate and remove suspended substances in the supernatant water to obtain sand-filtered water. . The sand-filtered water is caused to flow into the activated carbon adsorption tower to adsorb and remove dioxins in the water to be treated, whereby water in which dioxins are separated is obtained. The treatment of dioxins-containing wastewater according to the above conventional technique has the following problems. Dioxins are attached to fine suspended matter, but the capture rate of suspended matter in the sand filtration tank is low, and dioxins also flow out to the sand filtration treated water. Further, even in the activated carbon adsorption tower, the trapping rate of suspended solids is low, and the suspended solids may cause clogging. Since the sand filter tank and the activated carbon adsorption tower are backwashed with clear water at regular intervals, a large amount of water is required, and a large amount of cleaning wastewater containing dioxins accumulated in the sand filter tank and the activated carbon adsorption tower is generated. There were also problems.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上述した問
題点を解決し、ダイオキシン類を含む有機性排水から、
簡単な処理手段によって、ダイオキシン類を分離除去で
きる処理方法と装置を提供することを課題とする。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems, and from organic waste water containing dioxins,
It is an object of the present invention to provide a treatment method and an apparatus capable of separating and removing dioxins by a simple treatment means.
【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、ダイオキシン類を含有する排水の処理
方法であって、該排水を、常時曝気を行いながらＭＦ膜
又はＵＦ膜によりろ過して処理水を得ることとしたもの
である。前記排水の処理方法において、該排水の膜ろ過
は、活性炭を加えて行うことができ、また、前記膜ろ過
して得られる膜透過水は、活性炭により吸着処理して、
処理水を得ることができる。また、本発明では、ダイオ
キシン類を含有する排水の処理装置であって、前記排水
をろ過するＭＦ膜又はＵＦ膜を備えた反応槽と、該反応
槽に、槽内の排水を曝気する曝気手段と、活性炭を添加
する添加手段とを有することとしたものである。前記排
水の処理装置において、反応槽には、膜ろ過された膜透
過水を通す活性炭吸着塔を接続することができる。In order to solve the above problems, the present invention provides a method for treating wastewater containing dioxins, which comprises filtering the wastewater with an MF membrane or a UF membrane while constantly performing aeration. To obtain treated water. In the method for treating wastewater, membrane filtration of the wastewater can be performed by adding activated carbon, and the membrane permeated water obtained by the membrane filtration is subjected to adsorption treatment with activated carbon,
Treated water can be obtained. Further, according to the present invention, there is provided a treatment device for waste water containing dioxins, comprising a reaction tank provided with an MF membrane or a UF membrane for filtering the waste water, and an aeration means for aerating the waste water in the tank to the reaction tank. And an addition means for adding activated carbon. In the wastewater treatment apparatus, an activated carbon adsorption tower that allows membrane-filtered permeated water to pass through can be connected to the reaction tank.
【０００５】[0005]
【発明の実施の形態】ダイオキシン類含有排水の特徴と
して、排水中に含まれるダイオキシン類は、分子が単独
で水中に溶解しているものよりも、排水中に含まれる懸
濁物質に付着しているものの割合が高く、懸濁物質を除
去するだけで排水中のダイオキシン類を高い割合で分離
し、反応槽内に濃縮することが可能である。そこで、本
発明では、ダイオキシン類含有排水を、ＭＦ膜又はＵＦ
膜を浸漬し、常時曝気を行っている反応槽に供給し、Ｍ
Ｆ膜又はＵＦ膜によりろ過し処理水を得ることとし、ま
た、ＭＦ膜又はＵＦ膜を設置した反応槽に活性炭を加え
ることとし、さらに、膜ろ過して得られる膜透過水を活
性炭吸着塔に供給し、処理水を得ることとした。BEST MODE FOR CARRYING OUT THE INVENTION A feature of wastewater containing dioxins is that dioxins contained in wastewater adhere to suspended substances contained in wastewater rather than those in which molecules are dissolved alone in water. However, it is possible to separate dioxins in the wastewater at a high rate and concentrate them in the reaction tank simply by removing the suspended matter. Therefore, in the present invention, the dioxin-containing wastewater is treated with the MF membrane or the UF.
Immerse the membrane and supply it to the reaction tank that is constantly aerated.
The treated water is obtained by filtering with an F membrane or a UF membrane, and activated carbon is added to a reaction tank equipped with an MF membrane or a UF membrane. Further, the membrane-permeated water obtained by membrane filtration is passed through an activated carbon adsorption tower. It was decided to supply it and obtain treated water.
【０００６】次に、本発明を図面を用いて詳細に説明す
る。図１は、ダイオキシン類含有排水を本発明の処理方
法により処理する一例のフロー工程図を示す。図１に示
すように、ダイオキシン類含有排水１を、活性炭分散液
４を含む反応槽５に供給する。排水中に含まれるダイオ
キシン類のうち、溶解性のダイオキシン類は、活性炭に
吸着され排水中から分離される。活性炭分散液４に用い
る活性炭は、反応槽内での流動性を考慮し、粉末活性炭
であることが望ましいが、粒状炭でも可能である。ま
た、ダイオキシン類含有排水に生物分解性の有機物が含
まれる場合は、活性炭分散液４の代わりに活性汚泥に活
性炭を添加した混合液を用いることにより、ダイオキシ
ン類と生物分解性の有機物を同時に除去することができ
る。Next, the present invention will be described in detail with reference to the drawings. FIG. 1 shows a flow process diagram of an example of treating wastewater containing dioxins by the treatment method of the present invention. As shown in FIG. 1, dioxin-containing wastewater 1 is supplied to a reaction tank 5 containing an activated carbon dispersion liquid 4. Of the dioxins contained in the wastewater, soluble dioxins are adsorbed on the activated carbon and separated from the wastewater. The activated carbon used in the activated carbon dispersion liquid 4 is preferably powdered activated carbon in consideration of fluidity in the reaction tank, but granular carbon is also possible. If the dioxin-containing wastewater contains biodegradable organic matter, use a mixture of activated sludge and activated carbon instead of activated carbon dispersion 4 to remove dioxin and biodegradable organic matter at the same time. can do.
【０００７】分離膜６によるろ過で、懸濁性物質に付着
したダイオキシン類と活性炭などの懸濁物質は分離さ
れ、清澄な膜透過水２を得ることができる。懸濁物質を
除去するため、分離膜６にＭＦ膜又はＵＦ膜を用いるこ
とが望ましい。これらの膜の形状には中空糸、平膜など
あるが、本発明では形状には限定はない。なお、本発明
で用いるＭＦ膜とは、精密ろ過膜とも呼ばれ、その孔径
は１０μｍ〜０．０１μｍ程度である。また、ＵＦ膜と
は限外ろ過膜と呼ばれ、孔径は０．０１μｍ〜１ｎｍ程
度である。反応槽５内は槽内の撹拌のため、常時曝気を
行う。また、この曝気により、分離膜６表面を洗浄する
手段があることが望ましい。膜透過水２は、懸濁物質は
含まれないので、ダイオキシン類はほぼ除去されている
が、溶解性のダイオキシン類が残留している可能性があ
れば、さらに活性炭吸着塔７に膜透過水２を供給し、残
留したダイオキシン類を完全に除去することが可能であ
る。By the filtration through the separation membrane 6, the dioxins attached to the suspending substance and the suspended substance such as activated carbon are separated, and the clear membrane-permeated water 2 can be obtained. In order to remove suspended matter, it is desirable to use an MF membrane or a UF membrane as the separation membrane 6. The shape of these membranes includes hollow fibers and flat membranes, but the shape is not limited in the present invention. The MF membrane used in the present invention is also called a microfiltration membrane, and its pore size is about 10 μm to 0.01 μm. Further, the UF membrane is called an ultrafiltration membrane, and the pore size is about 0.01 μm to 1 nm. The inside of the reaction tank 5 is constantly aerated because of stirring inside the tank. Further, it is desirable to have a means for cleaning the surface of the separation membrane 6 by this aeration. Since the membrane-permeated water 2 does not contain suspended substances, dioxins are almost removed, but if there is a possibility that soluble dioxins may remain, the membrane-permeated water is further transferred to the activated carbon adsorption tower 7. It is possible to supply 2 to completely remove the residual dioxins.
【０００８】活性炭吸着塔７での膜透過水２の平均滞留
時間は、１時間以上が好ましい。反応槽５における粉末
活性炭の濃度は、５００ｍｇ／Ｌ以上が好ましい。ま
た、反応槽５に活性汚泥を入れた場合は、活性汚泥濃度
を２０００〜２００００ｍｇ／Ｌ程度に維持することが
好ましい。反応槽５で、槽内の撹拌や分離膜の洗浄のた
めに曝気を行う場合、水温が高い夏期などは、反応槽５
内で硝化反応が進行する場合があり、処理水３のｐＨが
低下する。このような場合は、反応槽５にｐＨ調整のた
め、炭酸カルシウムやサンゴ砂などを１００〜２０００
０ｍｇ／Ｌ添加することにより、ｐＨを調整することが
可能である。粉末炭酸カルシウムやサンゴ砂によりｐＨ
調整を行った場合、粒子へのダイオキシン類の吸着効果
や膜の洗浄効果も期待できる。The average residence time of the membrane permeated water 2 in the activated carbon adsorption tower 7 is preferably 1 hour or more. The concentration of the powdered activated carbon in the reaction tank 5 is preferably 500 mg / L or more. When activated sludge is put in the reaction tank 5, it is preferable to maintain the activated sludge concentration at about 2000 to 20000 mg / L. When aeration is performed in the reaction tank 5 for stirring inside the tank or cleaning the separation membrane, the reaction tank 5 may be used in the summer when the water temperature is high.
In some cases, the nitrification reaction may proceed, and the pH of the treated water 3 decreases. In such a case, calcium carbonate or coral sand is added to the reaction tank 5 to adjust the pH to 100 to 2000.
The pH can be adjusted by adding 0 mg / L. PH with powdered calcium carbonate or coral sand
When adjusted, the effect of adsorbing dioxins on the particles and the effect of cleaning the membrane can be expected.
【０００９】[0009]
【実施例】以下において、本発明を実施例によりさらに
具体的に説明するが、本発明は、この実施例に限定され
るものではない。
実施例１
この実施例１においては、研究施設から排出されたダイ
オキシン類含有排水を、図１に示すようなフローによ
り、ダイオキシン類含有排水の処理を行った。最初に、
反応槽５における処理について説明する。本実施例で
は、ダイオキシン類含有排水を１日あたり２０ｍ3処理
した。表１に、ダイオキシン類含有排水の水質と水量を
示す。反応槽５における粉末活性炭の濃度は１０００ｍ
ｇ／Ｌ、滞留時間は約１２時間であった。本実施例で
は、分離膜６に公称孔径０．４μｍ、公称膜面積４２ｍ
2のユニットを２基用いた。粉末活性炭の撹拌と膜表面
の洗浄のために、常時曝気を行った。ろ過は１３分運
転、２分間停止となるように運転し、膜透過流束は約
０．２ｍ／ｄであった。曝気風量は、６０ｍ3／ｈに設
定した。EXAMPLES The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. Example 1 In this Example 1, the dioxin-containing wastewater discharged from the research facility was treated according to the flow shown in FIG. At first,
The processing in the reaction tank 5 will be described. In this example, 20 m 3 of dioxins-containing wastewater was treated per day. Table 1 shows the water quality and quantity of dioxins-containing wastewater. The concentration of powdered activated carbon in the reaction tank 5 is 1000 m
The g / L and the retention time were about 12 hours. In this embodiment, the separation membrane 6 has a nominal pore diameter of 0.4 μm and a nominal membrane area of 42 m.
Two units of 2 were used. Aeration was constantly carried out to stir the powdered activated carbon and clean the membrane surface. Filtration was operated for 13 minutes and stopped for 2 minutes, and the membrane permeation flux was about 0.2 m / d. The amount of aeration air was set to 60 m 3 / h.
【００１０】[0010]
【表１】 [Table 1]
【００１１】表２に、反応槽５における処理結果を示
す。表２から、膜透過水２のＣＯＤは３ｍｇ／Ｌ、ＢＯ
Ｄは５ｍｇ／Ｌ以下となった。また、ダイオキシン類は
１ｐｇ−ＴＥＱ／Ｌ以下であり、活性炭分散液４による
吸着と分離膜６によるろ過で、排水中に含まれていたダ
イオキシン類はほぼ分離された。また、ＣＯＤやＢＯＤ
についても水質の改善が認められた。Table 2 shows the treatment results in the reaction tank 5. From Table 2, COD of membrane permeated water 2 is 3 mg / L, BO
D became 5 mg / L or less. The dioxin content was 1 pg-TEQ / L or less, and the dioxin content contained in the waste water was almost separated by adsorption with the activated carbon dispersion 4 and filtration with the separation membrane 6. Also, COD and BOD
The water quality was also improved.
【表２】 [Table 2]
【００１２】本実施例における、処理水３の水質を表３
に示す。表３から、処理水３のＣＯＤは２ｍｇ／Ｌ以
下、ＢＯＤは５ｍｇ／Ｌ以下で放流水として良好な処理
水が得られた。また、ダイオキシン類は１ｐｇ−ＴＥＱ
／Ｌ以下であり、放流基準を十分満足するものであっ
た。また、本実施例では、１年以上表３の処理水水質を
維持することができた。Table 3 shows the water quality of the treated water 3 in this embodiment.
Shown in. From Table 3, COD of treated water 3 was 2 mg / L or less, BOD was 5 mg / L or less, and excellent treated water was obtained as discharged water. In addition, 1 pg-TEQ for dioxins
/ L or less, which was sufficient to satisfy the discharge standard. Further, in this example, the treated water quality shown in Table 3 could be maintained for one year or longer.
【表３】 [Table 3]
【００１３】比較例１
本比較例は、従来の砂ろ過と活性炭吸着の組合せ処理に
より、ダイオキシン類含有廃水を処理したものであり、
比較例に用いたフロー工程図を図２に示す。最初に、砂
ろ過槽１４における処理について説明する。本比較例で
は、ダイオキシン類を１３０ｐｇ−ＴＥＱ／Ｌ含む排水
を、１日あたり２０ｍ3処理した。ダイオキシン類含有
排水は、凝集沈殿装置１６に供給され、ダイオキシン類
の凝集沈殿を行った。表４に、凝集沈殿装置１６におけ
る処理結果を示す。凝集沈殿装置で、ダイオキシン類が
９０％分離された。Comparative Example 1 In this comparative example, dioxins-containing wastewater was treated by the conventional combined treatment of sand filtration and activated carbon adsorption.
A flow process diagram used in the comparative example is shown in FIG. First, the processing in the sand filtration tank 14 will be described. In this comparative example, wastewater containing 130 pg-TEQ / L of dioxins was treated with 20 m 3 per day. The dioxin-containing wastewater was supplied to the coagulating sedimentation device 16 to coagulate the dioxin. Table 4 shows the processing results in the coagulation-sedimentation apparatus 16. 90% of dioxins were separated by a coagulating sedimentation device.
【表４】 [Table 4]
【００１４】表５に、砂ろ過槽１４における処理結果を
示す。砂ろ過槽１４では、ろ速を１００ｍ／ｄに設定し
て行った。砂ろ過処理水９のＣＯＤは３ｍｇ／Ｌ、ＢＯ
Ｄは５ｍｇ／Ｌ以下となった。しかし、ダイオキシン類
は７ｐｇ−ＴＥＱ／Ｌであり、ダイオキシン類の残留が
見られた。また、凝集沈殿処理水に含まれていた凝集汚
泥などの懸濁物質により、砂ろ過槽の閉塞が起こり、１
日１回の割合で処理水３による逆流洗浄を行う必要があ
り、１回の逆流洗浄で約０．５ｍ3の処理水を用いた。Table 5 shows the treatment results in the sand filtration tank 14. In the sand filtration tank 14, the filtration speed was set to 100 m / d. COD of sand filtration treated water 9 is 3 mg / L, BO
D became 5 mg / L or less. However, dioxins were 7 pg-TEQ / L, and residual dioxins were seen. In addition, suspended matter such as coagulated sludge contained in the coagulation-sedimentation-treated water causes clogging of the sand filtration tank.
It is necessary to perform backwashing with the treated water 3 once a day, and about 0.5 m 3 of treated water was used in one backwashing.
【表５】 [Table 5]
【００１５】砂ろ過処理水９は、活性炭吸着塔７に供給
され、処理水３が得られた。処理水３の水質を表６に示
す。表６から、活性炭処理した後に、始めてダイオキシ
ン類濃度が１ｐｇ−ＴＥＱ／Ｌ以下となった。砂ろ過処
理水９にも懸濁物質が含まれていたため、活性炭吸着塔
７で閉塞が起きることがあった。The sand filtered treated water 9 was supplied to the activated carbon adsorption tower 7 to obtain treated water 3. Table 6 shows the water quality of the treated water 3. From Table 6, the dioxin concentration became 1 pg-TEQ / L or less for the first time after the activated carbon treatment. Since the sand filtration treated water 9 also contained suspended substances, the activated carbon adsorption tower 7 was sometimes clogged.
【表６】
比較例では、最終的には実施例と同様の処理水を得るこ
とができた。しかし、砂ろ過槽の逆流洗浄を１日１回行
う必要があり、処理水の回収率が実施例よりも低下した
ことや、活性炭吸着塔の閉塞があり、運転操作が実施例
と比較して煩雑になった。[Table 6] In the comparative example, finally, the same treated water as in the example could be obtained. However, the backwashing of the sand filter tank had to be performed once a day, the recovery rate of the treated water was lower than that in the example, and the activated carbon adsorption tower was clogged, so that the operation was compared with the example. It became complicated.
【００１６】[0016]
【発明の効果】本発明によれば、ダイオキシン類含有排
水を活性炭を分散させた反応槽に供給し、分離膜により
処理水を得る装置を用いるとことで、排水中に含まれる
ダイオキシン類を分離除去することが可能である。排水
中のダイオキシン類は、粉末活性炭、又は活性汚泥によ
り吸着される効果がある。また、分離膜によるろ過で、
反応槽内の懸濁物質はすべて分離除去されるため、排水
中の懸濁物質及び懸濁物質に付着したダイオキシン類を
分離する効果がある。分離されたダイオキシ類は、反応
槽内で濃縮するため、その後の分解処理が行いやすくな
る効果がある。膜透過水中に溶解性のダイオキシン類が
残留した場合においても、膜ろ過槽の後段に活性炭吸着
塔を設置すれば、溶解性のダイオキシン類を吸着除去す
る効果がある。排水を活性炭吸着塔に流入させると閉塞
が起きるが、本発明では、活性炭吸着塔の前に膜分離を
行っており、懸濁物質が除去されていることから、活性
炭吸着塔において懸濁物質による閉塞を防ぎ、活性炭吸
着塔の運転時間を延ばす効果がある。EFFECTS OF THE INVENTION According to the present invention, dioxins contained in wastewater are separated by using a device for supplying wastewater containing dioxins to a reaction tank in which activated carbon is dispersed and obtaining treated water by a separation membrane. It can be removed. Dioxins in the waste water have an effect of being adsorbed by powdered activated carbon or activated sludge. Also, by filtration through a separation membrane,
Since all the suspended substances in the reaction tank are separated and removed, it is effective in separating suspended substances in the wastewater and dioxins attached to the suspended substances. Since the separated dioxys are concentrated in the reaction tank, it has an effect of facilitating the subsequent decomposition treatment. Even when soluble dioxin remains in the membrane-permeated water, installing an activated carbon adsorption tower in the latter stage of the membrane filtration tank has an effect of adsorbing and removing soluble dioxin. Although clogging occurs when the wastewater flows into the activated carbon adsorption tower, in the present invention, the membrane separation is performed before the activated carbon adsorption tower and the suspended solids are removed. It has the effect of preventing clogging and extending the operating time of the activated carbon adsorption tower.
【図１】本発明の処理方法を実施するための装置の一例
を示すフロー工程図。FIG. 1 is a flow process chart showing an example of an apparatus for carrying out a processing method of the present invention.
【図２】比較例に用いた装置のフロー工程図。FIG. 2 is a flow process diagram of an apparatus used in a comparative example.
１：ダイオキシン類含有排水、２：膜透過水、３：処理
水、４：活性炭分散液、５：反応槽、６：分離膜、７：
活性炭吸着塔、８：凝集沈殿処理水、９：砂ろ過処理
水、１０：逆洗水、１１：砂ろ過槽洗浄排水、１２：活
性炭吸着塔洗浄排水、１３：凝集沈殿汚泥、１４：砂ろ
過槽、１５：逆洗水槽、１６：凝集沈殿装置1: Wastewater containing dioxins, 2: Permeate water, 3: Treated water, 4: Activated carbon dispersion liquid, 5: Reaction tank, 6: Separation membrane, 7:
Activated carbon adsorption tower, 8: Coagulation sedimentation treated water, 9: Sand filtration treated water, 10: Backwash water, 11: Sand filtration tank washing drainage, 12: Activated carbon adsorption tower washing drainage, 13: Aggregation sedimentation sludge, 14: Sand filtration Tank, 15: Backwash water tank, 16: Coagulation sedimentation device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田中 俊博 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内 Ｆターム(参考） 4D006 GA06 GA07 KA31 KA43 KB12 KD19 PA01 PB08 PB59 4D024 AA04 AB11 BA02 BB01 BC01 BC05 CA01 CA06 DB05 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Toshihiro Tanaka 11-1 Haneda Asahi-cho, Ota-ku, Tokyo Co., Ltd. Inside the EBARA CORPORATION F-term (reference) 4D006 GA06 GA07 KA31 KA43 KB12 KD19 PA01 PB08 PB59 4D024 AA04 AB11 BA02 BB01 BC01 BC05 CA01 CA06 DB05
Claims (5)
法であって、該排水を、常時曝気を行いながらＭＦ膜又
はＵＦ膜によりろ過して処理水を得ることを特徴とする
ダイオキシン類含有排水の処理方法。1. A method for treating effluent containing dioxins, comprising treating the effluent with an MF membrane or a UF membrane while constantly aeration to obtain treated water. Processing method.
うことを特徴とする請求項１記載のダイオキシン類含有
排水の処理方法。2. The method for treating dioxin-containing wastewater according to claim 1, wherein the membrane filtration of the wastewater is performed by adding activated carbon.
性炭により吸着処理して処理水を得ることを特徴とする
請求項１記載のダイオキシン類含有排水の処理方法。3. The method for treating dioxin-containing wastewater according to claim 1, wherein the membrane-permeated water obtained by the membrane filtration is subjected to adsorption treatment with activated carbon to obtain treated water.
置であって、前記排水をろ過するＭＦ膜又はＵＦ膜を備
えた反応槽と、該反応槽に、槽内の排水を曝気する曝気
手段と、活性炭を添加する添加手段とを有することを特
徴とするダイオキシン類含有排水の処理装置。4. A treatment apparatus for wastewater containing dioxins, comprising a reaction tank provided with an MF membrane or a UF membrane for filtering the wastewater, and an aeration means for aerating the wastewater in the tank to the reaction tank. A treatment device for wastewater containing dioxins, comprising: an addition means for adding activated carbon.
を通す活性炭吸着塔を接続することを特徴とする請求項
４記載のダイオキシン類含有排水の処理装置。5. The treatment apparatus for dioxin-containing wastewater according to claim 4, wherein the reaction tank is connected to an activated carbon adsorption tower through which membrane-filtered permeated water is passed.
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|---|---|---|---|
| JP2001312381A JP2003117551A (en) | 2001-10-10 | 2001-10-10 | Method and device for treating dioxins-containing waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001312381A JP2003117551A (en) | 2001-10-10 | 2001-10-10 | Method and device for treating dioxins-containing waste water |
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| Publication Number | Publication Date |
|---|---|
| JP2003117551A true JP2003117551A (en) | 2003-04-22 |
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ID=19131051
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|---|---|---|---|
| JP2001312381A Pending JP2003117551A (en) | 2001-10-10 | 2001-10-10 | Method and device for treating dioxins-containing waste water |
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| Country | Link |
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| JP (1) | JP2003117551A (en) |
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|---|---|---|---|---|
| CN103523975A (en) * | 2013-10-21 | 2014-01-22 | 哈尔滨工业大学 | Method for treating emergency odor pollution by combining submerged microfiltration/ultrafiltration membrane technology |
| CN103523985A (en) * | 2012-06-29 | 2014-01-22 | 三菱丽阳株式会社 | Coke oven discharge water treatment device, and coke oven discharge water treatment method |
| JP6800366B1 (en) * | 2020-06-08 | 2020-12-16 | セントラルフィルター工業株式会社 | Wastewater treatment method |
-
2001
- 2001-10-10 JP JP2001312381A patent/JP2003117551A/en active Pending
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|---|---|---|---|---|
| CN103523985A (en) * | 2012-06-29 | 2014-01-22 | 三菱丽阳株式会社 | Coke oven discharge water treatment device, and coke oven discharge water treatment method |
| CN103523985B (en) * | 2012-06-29 | 2016-08-10 | 三菱丽阳株式会社 | The processing means of coke-fired furnace draining, the processing method of coke-fired furnace draining |
| CN103523975A (en) * | 2013-10-21 | 2014-01-22 | 哈尔滨工业大学 | Method for treating emergency odor pollution by combining submerged microfiltration/ultrafiltration membrane technology |
| JP6800366B1 (en) * | 2020-06-08 | 2020-12-16 | セントラルフィルター工業株式会社 | Wastewater treatment method |
| JP2021192894A (en) * | 2020-06-08 | 2021-12-23 | セントラルフィルター工業株式会社 | Wastewater treatment method |
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