JP2009172486A - Wastewater treatment apparatus - Google Patents

Wastewater treatment apparatus Download PDF

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JP2009172486A
JP2009172486A JP2008011905A JP2008011905A JP2009172486A JP 2009172486 A JP2009172486 A JP 2009172486A JP 2008011905 A JP2008011905 A JP 2008011905A JP 2008011905 A JP2008011905 A JP 2008011905A JP 2009172486 A JP2009172486 A JP 2009172486A
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tank
adsorbent
container
treatment apparatus
adsorption tank
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JP5260972B2 (en
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Tamotsu Tano
保 田野
Takashi Oyama
隆 大山
Kazuhisa Nakanishi
和久 中西
Akio Sakamoto
明男 坂本
Kazuo Shimizu
和夫 清水
Masashi Nakamitsu
真史 中光
Shinichi Matsuura
慎一 松浦
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Nissin Kogyo Co Ltd
Eneos Corp
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Nissin Kogyo Co Ltd
Nippon Oil Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a wastewater treatment apparatus capable of easily replacing an adsorbent. <P>SOLUTION: The wastewater treatment apparatus is equipped with a tank to which wastewater is supplied and a container which houses the adsorbent. The container is arranged in the tank and the wall of the container has a flow hole which enables the flow of wastewater between the inside and outside of the container. In the case where it is necessary to replace the adsorbent because of the deterioration of the adsorbent in this wastewater treatment apparatus, the container which houses the deteriorated adsorbent can be replaced with the container which houses the new adsorbent. By this constitution, the adsorbent can be easily replaced along with the container in the wastewater treatment apparatus. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、排水の浄化処理を行う排水処理装置に関するものである。   The present invention relates to a wastewater treatment apparatus that performs wastewater purification treatment.

従来、排水の浄化処理を行う排水処理装置として、排水に含まれる異物を吸着する吸着剤を用いて浄化能力を向上させるものが知られている。例えば、特許文献１に記載の油水分離装置では、吸着剤を含む吸着層の上に凝集剤を含む支持体層を設けることで、排水に含まれる油の除去率を高めて浄化能力を向上させている。   2. Description of the Related Art Conventionally, as a waste water treatment apparatus that performs waste water purification treatment, an apparatus that improves the purification capacity using an adsorbent that adsorbs foreign substances contained in waste water is known. For example, in the oil-water separator described in Patent Document 1, by providing a support layer containing a flocculant on an adsorbing layer containing an adsorbent, the removal rate of oil contained in the waste water is increased and the purification capability is improved. ing.

特開２００４−８８８８号公報JP 2004-8888 A

ところで、特許文献１に記載の発明のように吸着剤を用いて排水処理を行うと、異物の吸着などによって吸着剤が次第に劣化していくこととなる。このように劣化した吸着剤においては、目詰まりなどが発生して槽の排水処理能力が大幅に低下するため、吸着剤の交換を行う必要がある。この吸着剤の交換方法としては、バキューム装置などを用いて吸着剤の回収及び充填を行う方法があるが、このような方法では、吸着剤の交換に労力が費やされ、時間がかかるという問題があった。   By the way, when the wastewater treatment is performed using the adsorbent as in the invention described in Patent Document 1, the adsorbent gradually deteriorates due to the adsorption of foreign matters. In such a deteriorated adsorbent, clogging or the like occurs, and the wastewater treatment capacity of the tank is greatly reduced. Therefore, it is necessary to replace the adsorbent. As a method of exchanging the adsorbent, there is a method of collecting and filling the adsorbent using a vacuum device or the like. However, in such a method, labor is spent on exchanging the adsorbent and it takes time. was there.

そこで、本発明は、吸着剤を容易に交換できる排水処理装置を提供することを目的とする。   Then, an object of this invention is to provide the waste water treatment apparatus which can replace | exchange an adsorbent easily.

本発明に係る排水処理装置は、排水が供給される槽と、吸着剤を収容する容器と、を備え、容器は、槽内に配置され、容器の壁は、容器内外間での排水の流通を可能とする流通孔を有することを特徴とする。この排水処理装置によれば、排水が容器の壁の流通孔により容器内外間を流通可能とされ、容器内に収容された吸着剤の隙間を排水が流れることで、排水中の異物が吸着されて排水を浄化することができる。さらに、吸着剤の交換が必要な場合には、劣化した吸着剤を収容する容器を新しい吸着剤を収容する容器と交換すればよい。このようにして、本発明に係る排水処理装置は、容器を交換することにより吸着剤を容易に交換することができる。   The waste water treatment apparatus according to the present invention includes a tank to which waste water is supplied and a container for containing an adsorbent, the container is disposed in the tank, and the wall of the container is a flow of waste water between the inside and outside of the container. It is characterized by having a flow hole that enables the following. According to this waste water treatment apparatus, the waste water can flow between the inside and outside of the container through the flow hole of the container wall, and the waste water flows through the gap between the adsorbents accommodated in the container, so that foreign matters in the waste water are adsorbed. The waste water can be purified. Furthermore, when the adsorbent needs to be replaced, the container containing the deteriorated adsorbent may be replaced with a container containing new adsorbent. Thus, the waste water treatment apparatus according to the present invention can easily exchange the adsorbent by exchanging the container.

ここで、上記の排水処理装置は、容器を槽内に複数備えることが好ましい。このように、容器を複数備える構成とすることで、吸着剤の交換にかかる労力を分散させて、吸着剤を容易に交換することができる。   Here, the waste water treatment apparatus preferably includes a plurality of containers in the tank. Thus, by setting it as the structure provided with two or more containers, the effort concerning replacement | exchange of adsorption agent can be disperse | distributed, and adsorption agent can be replaced | exchanged easily.

また、容器を槽内における排水の流通方向に沿って複数段備えることが好ましい。この場合、上流側に配置された容器から吸着剤の劣化が進行していくこととなる。したがって、例えば、上流側からの容器のみを選択的に交換することで、槽の浄化能力を容易に回復させることができる。   Moreover, it is preferable to provide a container with a plurality of stages along the flow direction of drainage in the tank. In this case, the deterioration of the adsorbent proceeds from the container disposed on the upstream side. Therefore, for example, the purifying ability of the tank can be easily recovered by selectively exchanging only the container from the upstream side.

また、槽内における容器の下方に配置された、逆洗用流体を排出する逆洗孔を更に備えることが好ましい。これにより、容器の下方に配置された逆洗孔から逆洗用流体を排出することで、吸着剤に付着した異物を除去する逆洗を行うことができる。その結果、吸着剤が再賦活されるので、槽の浄化能力を回復させることができる。   Moreover, it is preferable to further provide a backwashing hole for discharging the backwashing fluid disposed below the container in the tank. Thereby, the backwashing which removes the foreign material adhering to adsorption agent can be performed by discharging the fluid for backwashing from the backwashing hole arranged under the container. As a result, since the adsorbent is reactivated, the purification capacity of the tank can be recovered.

また、上記の排水処理装置は、槽を並列に複数備えると共に、槽から排出される液体の水質を検知する水質検知手段と、排水の一方の槽への供給と、他方の槽への供給とを切り替える切り替え手段と、を更に備えることが好ましい。このような構成によれば、一方の槽の水質が劣化してきた場合に、排水の供給を切り替えて他方の槽に処理を行わせながら、当該一方の槽の吸着剤の交換や逆洗を行うことができる。このようにして、排水処理装置は、高い排水処理能力を維持しつつ、連続運転を行うことができる。   The waste water treatment apparatus includes a plurality of tanks in parallel, a water quality detecting means for detecting the water quality of the liquid discharged from the tank, supply of the waste water to one tank, and supply to the other tank. It is preferable to further comprise switching means for switching between. According to such a configuration, when the water quality of one tank has deteriorated, the adsorbent of the one tank is replaced or backwashed while switching the supply of waste water and causing the other tank to perform the treatment. be able to. In this way, the wastewater treatment apparatus can perform continuous operation while maintaining high wastewater treatment capacity.

本発明によれば、吸着剤を容易に交換できる排水処理装置を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the waste water treatment apparatus which can replace | exchange an adsorbent easily can be provided.

以下、図面を参照しつつ本発明に係る排水処理装置の好適な実施形態について詳細に説明する。   Hereinafter, preferred embodiments of a wastewater treatment apparatus according to the present invention will be described in detail with reference to the drawings.

本実施形態に係る排水処理装置１は、特に、製油所のタンクや工場配管等の洗浄時に発生する高濃度の油汚染排水を処理して、一般環境へ排出可能な濃度まで浄化するものである。   The wastewater treatment apparatus 1 according to the present embodiment treats high-concentration oil-contaminated wastewater generated during cleaning of refinery tanks, factory piping, etc., and purifies it to a concentration that can be discharged to the general environment. .

図１に示すように、本実施形態に係る排水処理装置１は、油水分離槽２、第一吸着槽（槽）３、第二吸着槽（槽）４、第三吸着槽（槽）５、処理水水槽６、予備槽（槽）７、水質モニタ（水質検知手段）８、逆洗装置９を主として備える。   As shown in FIG. 1, the wastewater treatment apparatus 1 according to this embodiment includes an oil / water separation tank 2, a first adsorption tank (tank) 3, a second adsorption tank (tank) 4, a third adsorption tank (tank) 5, A treated water tank 6, a preliminary tank (tank) 7, a water quality monitor (water quality detection means) 8, and a backwash device 9 are mainly provided.

油水分離槽２は、供給された排水に含まれる油を分離するものである。この油水分離槽２としては、例えば、水と油の比重の違いを利用した自然分離浮上方式のものが用いられる。この油水分離槽２によって油を分離された排水は、ポンプ１０を備えるラインＬ１を介して第一吸着槽３に供給される。   The oil / water separation tank 2 separates oil contained in the supplied wastewater. As the oil / water separation tank 2, for example, a natural separation and levitation system using a difference in specific gravity between water and oil is used. The waste water from which the oil has been separated by the oil / water separation tank 2 is supplied to the first adsorption tank 3 via a line L1 having a pump 10.

第一吸着槽３、第二吸着槽４、及び第三吸着槽５は、排水に含まれる油分などの異物を吸着する吸着剤により排水の浄化を行うものである。この第一吸着槽３に供給された排水は、槽内の吸着剤によって浄化され、ポンプ１１を備えるラインＬ２を介して第二吸着槽４に供給される。   The 1st adsorption tank 3, the 2nd adsorption tank 4, and the 3rd adsorption tank 5 purify waste water with the adsorption agent which adsorb | sucks foreign materials, such as the oil component contained in waste water. The waste water supplied to the first adsorption tank 3 is purified by the adsorbent in the tank, and is supplied to the second adsorption tank 4 via a line L2 provided with a pump 11.

この第二吸着槽４において吸着剤により浄化された排水は、ポンプ１２を備えるラインＬ３を介して第三吸着槽５に供給され、この第三吸着槽５において吸着剤により浄化された排水は、ポンプ１３を備えるラインＬ４を介して処理水水槽６に供給される。処理水水槽６は、浄化処理された排水を貯留するものである。この処理水水槽６から、浄化処理された排水が河川などの一般環境へ排出される。   The waste water purified by the adsorbent in the second adsorption tank 4 is supplied to the third adsorption tank 5 via the line L3 including the pump 12, and the waste water purified by the adsorbent in the third adsorption tank 5 is It is supplied to the treated water tank 6 through a line L4 provided with a pump 13. The treated water tank 6 stores the purified waste water. From the treated water tank 6, the purified waste water is discharged to a general environment such as a river.

予備槽７は、第一吸着槽３と並列に配置され、この第一吸着槽３と同じ構造及び性能を有するものである。この予備槽７には、油水分離槽２から排出された排水を供給するためのラインＬ１が上方に配管されていると共に、予備槽７から排出された排水を第二吸着槽４に供給するためのラインＬ２が底部に配管されている。   The preliminary tank 7 is arranged in parallel with the first adsorption tank 3 and has the same structure and performance as the first adsorption tank 3. A line L1 for supplying the drainage discharged from the oil / water separation tank 2 is piped upward in the reserve tank 7 and the drainage discharged from the reserve tank 7 is supplied to the second adsorption tank 4. The line L2 is piped at the bottom.

このラインＬ１には、切り替え弁（切り替え手段）１４が備えられており、この切り替え弁１４としては、油水分離槽２側開口部、第一吸着槽３側開口部、及び予備槽７側開口部を有する三方弁等が用いられる。   The line L1 is provided with a switching valve (switching means) 14, and the switching valve 14 includes an oil / water separation tank 2 side opening, a first adsorption tank 3 side opening, and a preliminary tank 7 side opening. A three-way valve having

この切り替え弁１４は、通常、予備槽７側開口部が閉じられ、第一吸着槽３側開口部が開かれた状態となっており、油水分離槽２から排出された排水はこの第一吸着槽３側開口部を通じて第一吸着槽３に供給される。そして、この第一吸着槽３側開口部が閉じられ、予備槽７側開口部が開かれるように切り替え弁１４を切り替えることで、第一吸着槽３に対する排水の供給を止めて、予備槽７に排水を供給する構成となっている。   The switching valve 14 is normally in a state in which the opening on the auxiliary tank 7 side is closed and the opening on the first adsorption tank 3 side is opened, and the drainage discharged from the oil / water separation tank 2 is the first adsorption. It is supplied to the first adsorption tank 3 through the tank 3 side opening. And the supply of the waste_water | drain with respect to the 1st adsorption tank 3 is stopped by switching the switching valve 14 so that this 1st adsorption tank 3 side opening part is closed and the preliminary tank 7 side opening part is opened, and the preliminary tank 7 It is the structure which supplies wastewater to.

水質モニタ８は、排水の水質を検知するものである。この水質モニタ８は、ラインＬ２及びラインＬ４に接続されており、第一吸着槽３から排出された排水の水質と第三吸着槽５から排出された排水の水質とを検知する。この水質モニタ８は、排水の水質として、ＴＯＣ（全有機炭素）、ＣＯＤ（化学的酸素要求量）、ＳＳ（浮遊物質量）等を検知する。   The water quality monitor 8 detects the water quality of the waste water. The water quality monitor 8 is connected to the line L2 and the line L4, and detects the water quality of the wastewater discharged from the first adsorption tank 3 and the water quality of the wastewater discharged from the third adsorption tank 5. This water quality monitor 8 detects TOC (total organic carbon), COD (chemical oxygen demand), SS (floating matter amount), etc. as the quality of the waste water.

また、水質モニタ８には、排水の水質検知結果を表示するディスプレイが備えられ、このディスプレイを確認することで、第一吸着槽３から排出された排水の水質と第三吸着槽５から排出された排水の水質とを確認することができる。このような水質モニタ８としては、例えば、西華産業株式会社製オートサンプリング据置型連続式水質測定器ＩＸＯ−５１０(測定対象：ＴＯＣ、ＣＯＤ、ＳＳ等）が備えられる。   Further, the water quality monitor 8 is provided with a display for displaying the water quality detection result of the waste water. By checking this display, the water quality of the waste water discharged from the first adsorption tank 3 and the third adsorption tank 5 are discharged. The quality of the waste water can be confirmed. As such a water quality monitor 8, for example, an auto sampling stationary type continuous water quality measuring instrument IXO-510 (measurement object: TOC, COD, SS, etc.) manufactured by Seika Sangyo Co., Ltd. is provided.

逆洗装置９は、各吸着槽に逆洗用流体を供給して、槽内に配置された吸着剤の逆洗を行うものである。この逆洗用流体としては、温水、スチーム、空気などがある。この逆洗装置９には、第一吸着槽３に連結するラインＬ１０が配管され、ラインＬ１０を介して逆洗用流体を第一吸着槽３に供給する。この第一吸着槽３の上部には、油水分離槽２と連結したラインＬ１１が接続されており、このラインＬ１１を介して逆洗用流体が排出される。   The backwashing apparatus 9 supplies backwashing fluid to each adsorption tank and performs backwashing of the adsorbent disposed in the tank. Examples of the backwash fluid include hot water, steam, and air. The backwashing device 9 is provided with a line L10 connected to the first adsorption tank 3 and supplies backwashing fluid to the first adsorption tank 3 through the line L10. A line L11 connected to the oil / water separation tank 2 is connected to the upper portion of the first adsorption tank 3, and the backwash fluid is discharged through the line L11.

同様に、逆洗装置９には、第二吸着槽４及び第三吸着槽５に連結するラインＬ１２と予備槽７に連結するラインＬ１３とが配管され、ラインＬ１２及びラインＬ１３を介して逆洗用流体を各槽に供給する。これらの予備槽７、第二吸着槽４、及び第三吸着槽５の上部には、油水分離槽２に連結するラインＬ１４が配管され、このラインＬ１４を介して逆洗用流体が排出される。   Similarly, a line L12 connected to the second adsorption tank 4 and the third adsorption tank 5 and a line L13 connected to the auxiliary tank 7 are piped in the backwashing device 9, and backwashing is performed via the lines L12 and L13. Supply fluid to each tank. A line L14 connected to the oil / water separation tank 2 is piped above the preliminary tank 7, the second adsorption tank 4, and the third adsorption tank 5, and the backwash fluid is discharged through the line L14. .

このような構成により、本実施形態に係る排水処理装置１では、水質モニタ８が第一吸着槽３から排出される排水の水質を検知するので、ディスプレイに表示された水質検知結果に基づいて、第一吸着槽３の浄化能力が低下しているか否かを判断することができる。   With such a configuration, in the wastewater treatment apparatus 1 according to the present embodiment, the water quality monitor 8 detects the water quality of the wastewater discharged from the first adsorption tank 3, and therefore, based on the water quality detection result displayed on the display, It can be determined whether or not the purification capacity of the first adsorption tank 3 is reduced.

第一吸着槽３の浄化能力が低下していると判断した場合には、切り替え弁１４を切り替えて、第一吸着槽３に対する排水の供給を止めると共に、予備槽７に排水の供給を行う。そして、第一吸着槽３に対して、槽内の吸着剤の交換や逆洗装置９による逆洗を行うことで、第一吸着槽３の浄化能力を回復させる。その後、再び切り替え弁１４を切り替えて、予備槽７に対する排水の供給を止めると共に、第一吸着槽３に排水の供給を行う。このようにして、本実施形態に係る排水処理装置１は、高い排水処理能力を維持しながら、連続運転を行うことができる。   When it is determined that the purification capacity of the first adsorption tank 3 is reduced, the switching valve 14 is switched to stop the supply of wastewater to the first adsorption tank 3 and supply wastewater to the preliminary tank 7. And the purification | cleaning capability of the 1st adsorption tank 3 is recovered by performing the exchange of the adsorption agent in a tank, and the backwashing by the backwashing apparatus 9 with respect to the 1st adsorption tank 3. FIG. Thereafter, the switching valve 14 is switched again to stop the supply of wastewater to the preliminary tank 7 and supply the wastewater to the first adsorption tank 3. In this way, the wastewater treatment apparatus 1 according to the present embodiment can perform continuous operation while maintaining high wastewater treatment capacity.

また、本実施形態に係る排水処理装置１では、水質モニタ８が第一吸着槽３から排出される排水と第三吸着槽５から排出される排水との水質検知結果をディスプレイに表示するので、これらの水質検知結果を比較して、第二吸着槽４及び第三吸着槽５の浄化能力が低下しているか否かを判断することができる。   In the wastewater treatment apparatus 1 according to the present embodiment, the water quality monitor 8 displays on the display the water quality detection results of the wastewater discharged from the first adsorption tank 3 and the wastewater discharged from the third adsorption tank 5. By comparing these water quality detection results, it can be determined whether or not the purification capacities of the second adsorption tank 4 and the third adsorption tank 5 are reduced.

第二吸着槽４及び第三吸着槽５の浄化能力が低下していると判断した場合には、排水処理装置１に対する排水の供給を止める。そして、第二吸着槽４及び第三吸着槽５における吸着剤の交換や逆洗装置９による逆洗を行うことで、第二吸着槽４及び第三吸着槽５の浄化能力を回復させることができる。   When it is determined that the purification capacity of the second adsorption tank 4 and the third adsorption tank 5 is reduced, the supply of waste water to the waste water treatment apparatus 1 is stopped. And the purification | cleaning capability of the 2nd adsorption tank 4 and the 3rd adsorption tank 5 can be recovered by performing the exchange of the adsorbent in the 2nd adsorption tank 4 and the 3rd adsorption tank 5, and the backwashing by the backwashing apparatus 9. it can.

また、本実施形態に係る排水処理装置１に用いられるポンプ１０、１１、１２、１３、水質モニタ８、逆洗装置９などは、全て防爆仕様のものが採用されており、可燃性ガスの雰囲気下においても排水処理を行うことが可能である。   Further, the pumps 10, 11, 12, 13, the water quality monitor 8, the backwashing device 9 and the like used in the waste water treatment apparatus 1 according to the present embodiment are all explosion-proof specifications, and the atmosphere of combustible gas. It is possible to carry out wastewater treatment below.

また、本実施形態に係る排水処理装置１によれば、大型の槽や装置を必要としないので、例えば、トラックなどに載せることで、運搬可能な移動式排水処理装置として運用することができる。   Further, according to the wastewater treatment apparatus 1 according to the present embodiment, since a large tank or device is not required, for example, it can be operated as a transportable mobile wastewater treatment apparatus by placing it on a truck or the like.

図２に示すように、第一吸着槽３は、上蓋３ａと槽本体３ｂとから構成されている。この上蓋３ａの中央には、上蓋３ａを貫いて、油水分離槽２に連結したラインＬ１が配管されている。このラインＬ１は、第一吸着槽３の上部において傘状に展開しており、排水を分散して槽内に供給する。このラインＬ１を介して第一吸着槽３内に供給される排水は、槽内を流下した後、槽本体３ｂの底に配管されたラインＬ２を介して排出される。   As shown in FIG. 2, the 1st adsorption tank 3 is comprised from the upper cover 3a and the tank main body 3b. In the center of the upper lid 3a, a line L1 penetrating the upper lid 3a and connected to the oil / water separation tank 2 is piped. This line L1 is developed in an umbrella shape at the upper part of the first adsorption tank 3, and the waste water is dispersed and supplied into the tank. The waste water supplied into the first adsorption tank 3 through the line L1 flows down through the tank, and is then discharged through the line L2 piped to the bottom of the tank body 3b.

また、第一吸着槽３内には、吸着剤容器（容器）３０、３１、３２が排水の流通方向に沿って配置されている。これらの吸着剤容器３０、３１、３２内には、それぞれ吸着剤３３、３４、３５が充填されており、これらの吸着剤３３、３４、３５は、油などの異物を吸着する機能を有している。このような吸着剤３３、３４、３５としては、例えば、活性炭が用いられるが、特に、特開２００６−８２０６２号公報に開示されたか焼コークスを用いると好適である。また、この吸着剤の好適な粒径は、１〜１０ｍｍである。   Further, in the first adsorption tank 3, adsorbent containers (containers) 30, 31, and 32 are arranged along the flow direction of the waste water. These adsorbent containers 30, 31, and 32 are filled with adsorbents 33, 34, and 35, respectively, and these adsorbents 33, 34, and 35 have a function of adsorbing foreign substances such as oil. ing. As such adsorbents 33, 34, and 35, for example, activated carbon is used, and it is particularly preferable to use calcined coke disclosed in JP-A-2006-82062. Moreover, the suitable particle size of this adsorbent is 1-10 mm.

図３（ａ）及び図３（ｂ）に示すように、吸着剤容器３０は、底に設けられた網部３０ａ、円筒上の本体３０ｂ、及び本体３０ｂに取り付けられたベルト３０ｃを備えている。この網部３０ａは、吸着剤容器３０内に充填される吸着剤を通さず、かつ、排水の流通を可能とすべく適切な孔径の流通孔を有している。この場合の好適なメッシュ値は、５０〜１００である。また、ベルト３０ｃは、吸着剤を収容した吸着剤容器３０を吊持するために本体３０ｂに確実に取り付けられると共に、容器を槽内に設置した際に本体３０ｂの側方にしまい込むために十分な長さを有している。   As shown in FIGS. 3A and 3B, the adsorbent container 30 includes a net 30a provided at the bottom, a cylindrical main body 30b, and a belt 30c attached to the main body 30b. . The mesh portion 30a does not pass the adsorbent filled in the adsorbent container 30, and has a flow hole having an appropriate hole diameter so as to allow the drainage to flow. A suitable mesh value in this case is 50-100. Further, the belt 30c is securely attached to the main body 30b to suspend the adsorbent container 30 containing the adsorbent, and is sufficient to be stowed to the side of the main body 30b when the container is installed in the tank. Length.

このような構成の吸着剤容器３０によれば、図２に示すように、吸着剤３３を充填しつつ、排水が流通可能なように槽内に配置することができる。この第一吸着槽３内において、ラインＬ１から供給され、吸着剤容器３０内に流入した排水は、容器内に充填された吸着剤３３の隙間を流れ、網部３０ａを介して吸着剤容器３０外に流出する。このとき、排水に含まれる油などが吸着剤に吸着されることで、排水の浄化が行われることとなる。また、吸着剤容器３１、３２も同様の構成及び機能を有している。   According to the adsorbent container 30 having such a configuration, as shown in FIG. 2, the adsorbent 33 can be placed in the tank so that the drainage can flow while being filled with the adsorbent 33. In this first adsorption tank 3, the waste water supplied from the line L1 and flowing into the adsorbent container 30 flows through the gap between the adsorbents 33 filled in the container, and passes through the mesh part 30a to adsorbent container 30. It flows out. At this time, the oil contained in the waste water is adsorbed by the adsorbent, so that the waste water is purified. Further, the adsorbent containers 31 and 32 also have the same configuration and function.

また、これらの吸着剤容器３０、３１、３２の下方には、ラインＬ１０と接続された中空の逆洗環４０、４１、４２がそれぞれ配置されている。これらの逆洗環４０、４１、４２には、ラインＬ１０を介して逆洗装置９から供給された逆洗用流体を上方に排出するための複数の逆洗孔４０ａ、４１ａ、４２ａがそれぞれ設けられている。   In addition, below these adsorbent containers 30, 31, 32, hollow backwash rings 40, 41, 42 connected to the line L10 are arranged, respectively. A plurality of backwash holes 40a, 41a, and 42a are provided in the backwash rings 40, 41, and 42 for discharging the backwash fluid supplied from the backwash device 9 through the line L10 upward. It has been.

図４に示すように、逆洗環４０は、複数の逆洗孔４０ａを有する環本体４０ｂ、環本体４０ｂに連結されたホース４０ｃ、ホース４０ｃをラインＬ１０に接続するための接続部４０ｄを備えている。この逆洗環４０の逆洗孔４０ａは、逆洗用流体を効果的に分散して排出できるように、環本体４０ｂ上に所定間隔で設けられている。   As shown in FIG. 4, the backwash ring 40 includes a ring main body 40b having a plurality of backwash holes 40a, a hose 40c connected to the ring main body 40b, and a connection portion 40d for connecting the hose 40c to the line L10. ing. The backwash holes 40a of the backwash ring 40 are provided at predetermined intervals on the ring body 40b so that the backwash fluid can be effectively dispersed and discharged.

このような構成の逆洗環４０によれば、図２に示すように、接続部４０ｄによりラインＬ１０に接続すると共に、ホース４０ｃの可撓性により余裕を持って吸着剤容器３０の下方に配置することができる。これにより、逆洗装置９からラインＬ１０に供給された逆洗用流体は、接続部４０ｄ及びホース４０ｃを介して逆洗環４０内に供給される。そして、逆洗用流体は、環本体４０ｂ上に設けられた逆洗孔４０ａより分散して排出されて、吸着剤容器３０内の吸着剤３３を効果的に逆洗することができる。また、逆洗環４１、４２も同様の構成及び機能を有している。   According to the backwash ring 40 having such a configuration, as shown in FIG. 2, the backwash ring 40 is connected to the line L10 by the connecting portion 40d and is disposed below the adsorbent container 30 with a margin due to the flexibility of the hose 40c. can do. Thereby, the backwashing fluid supplied from the backwashing device 9 to the line L10 is supplied into the backwashing ring 40 through the connection portion 40d and the hose 40c. And the fluid for backwashing is disperse | distributed and discharged | emitted from the backwashing hole 40a provided on the ring main body 40b, and the adsorbent 33 in the adsorbent container 30 can be backwashed effectively. The backwash rings 41 and 42 also have the same configuration and function.

また、第一吸着槽３底に設けられたラインＬ２には、逆洗時に閉じられる逆洗用弁３６が設けられている。この逆洗用弁３６を閉じることにより、逆洗環４０、４１、４２から排出された逆洗用流体は、第一吸着槽３内を満たしていき、第一吸着槽３の上部に接続されたライン１１を介して油水分離槽２に排出されることとなる。   A line L2 provided at the bottom of the first adsorption tank 3 is provided with a backwash valve 36 that is closed during backwashing. By closing the backwash valve 36, the backwash fluid discharged from the backwash rings 40, 41, 42 fills the inside of the first adsorption tank 3 and is connected to the upper part of the first adsorption tank 3. The oil / water separation tank 2 is discharged through the line 11.

次に、以上の構成を有する第一吸着槽３における吸着剤の交換方法について説明する。   Next, a method for replacing the adsorbent in the first adsorption tank 3 having the above configuration will be described.

まず、第一吸着槽３の上蓋３ａ及びラインＬ１を槽本体３ｂから外す。次に、ベルト３０ｃを用いて吸着剤容器３０を吊り上げて上方から運び出すと共に、槽内の吸着剤容器３１に充填された吸着剤３４の状態を確認して、吸着剤３４の交換が必要か否かを判断する。このとき、吸着剤３４は劣化していないと判断した場合には、槽内の逆洗環４０の上に新しい吸着剤を充填した吸着剤容器を配置する。   First, the upper lid 3a and the line L1 of the first adsorption tank 3 are removed from the tank body 3b. Next, the adsorbent container 30 is lifted using the belt 30c and carried out from above, and the state of the adsorbent 34 filled in the adsorbent container 31 in the tank is checked to determine whether the adsorbent 34 needs to be replaced. Determine whether. At this time, if it is determined that the adsorbent 34 has not deteriorated, an adsorbent container filled with a new adsorbent is disposed on the backwash ring 40 in the tank.

一方、吸着剤３４が劣化していると判断した場合には、逆洗環４０の接続部４０ｄをラインＬ１０から外して逆洗環４０を回収する。その後、吸着剤容器３１を吊り上げて上方から運び出す。そして、槽内の吸着剤容器３２に充填された吸着剤３５の状態を確認して、吸着剤３５の交換が必要か否かを判断する。このとき、吸着剤３５は劣化していないと判断した場合には、槽内の逆洗環４１の上に２つの新たな吸着剤を充填した吸着剤容器及び逆洗環４０を交互に配置する。一方、吸着剤３４が劣化していると判断した場合には、逆洗環４１を回収して吸着剤容器３２を上方から運び出し、槽内の逆洗環４２の上に３つの新しい吸着剤を充填した吸着剤容器及び逆洗環４０、４１を交互に配置する。最後に、第一吸着槽３の槽本体３ｂに上蓋３ａ及びラインＬ１を再び取り付ける。   On the other hand, if it is determined that the adsorbent 34 has deteriorated, the connecting portion 40d of the backwash ring 40 is removed from the line L10, and the backwash ring 40 is recovered. Thereafter, the adsorbent container 31 is lifted and carried out from above. Then, the state of the adsorbent 35 filled in the adsorbent container 32 in the tank is confirmed to determine whether or not the adsorbent 35 needs to be replaced. At this time, if it is determined that the adsorbent 35 has not deteriorated, the adsorbent container filled with two new adsorbents and the backwash ring 40 are alternately arranged on the backwash ring 41 in the tank. . On the other hand, if it is determined that the adsorbent 34 has deteriorated, the backwash ring 41 is recovered, the adsorbent container 32 is carried out from above, and three new adsorbents are placed on the backwash ring 42 in the tank. The filled adsorbent containers and backwash rings 40 and 41 are alternately arranged. Finally, the upper lid 3a and the line L1 are attached to the tank body 3b of the first adsorption tank 3 again.

このように、本実施形態に係る第一吸着槽３では、劣化した吸着剤の交換を行う場合に、吸着剤を収容した吸着剤容器を交換することで、容易に吸着剤の交換を行うことができる。さらに、吸着剤容器は、排水の流通方向に沿って配置されており、吸着剤の劣化は上流側から進行するので、上流側に配置された吸着剤容器の吸着剤を順次確認して、劣化した吸着剤のみを交換していくことで、効率良く第一吸着槽３の浄化能力の回復を図ることができる。   Thus, in the first adsorption tank 3 according to the present embodiment, when the deteriorated adsorbent is replaced, the adsorbent can be easily replaced by replacing the adsorbent container containing the adsorbent. Can do. Furthermore, since the adsorbent container is arranged along the flow direction of the waste water, and the deterioration of the adsorbent proceeds from the upstream side, the adsorbent in the adsorbent container arranged on the upstream side is sequentially checked and deteriorated. The purification capacity of the first adsorption tank 3 can be efficiently restored by exchanging only the adsorbent.

本発明は、前述した実施形態に限定されないことは言うまでもない。例えば、第一吸着槽３内には、３つの吸着剤容器３０、３１、３２が配置されていたが、吸着剤容器の数は、１つや２つでも良く、４つ以上配置しても良い。また、各吸着剤容器には、それぞれ異なる種類の吸着剤を収容しても良い。   It goes without saying that the present invention is not limited to the embodiment described above. For example, although three adsorbent containers 30, 31, and 32 are disposed in the first adsorption tank 3, the number of adsorbent containers may be one or two, or four or more. . Each adsorbent container may contain different types of adsorbents.

また、排水処理装置１には、第一吸着槽３、第二吸着槽４、第三吸着槽５が備えられていたが、排水の種類に応じて吸着槽は１つでも良く、４つ以上であっても良い、また、それぞれ異なる種類の吸着剤を備える吸着槽であることを妨げない。   Moreover, although the waste water treatment apparatus 1 was equipped with the 1st adsorption tank 3, the 2nd adsorption tank 4, and the 3rd adsorption tank 5, according to the kind of waste_water | drain, one adsorption tank may be sufficient and four or more Moreover, it is not prevented that it is an adsorption tank provided with different kinds of adsorbents.

また、逆洗孔を有する部材として、中空の逆洗環を用いたが、環状の部材でなくても良く、中空であれば、棒状部材であっても、板状部材であっても良い。   Moreover, although the hollow backwash ring was used as a member which has a backwash hole, it may not be a cyclic | annular member, and if it is hollow, it may be a rod-shaped member or a plate-shaped member.

また、吸着剤容器は、全体が金属繊維で編まれた袋状の容器であっても良い。   Further, the adsorbent container may be a bag-like container knitted entirely with metal fibers.

また、流通孔を有する容器の壁としては、網目ではなく、多孔板や多孔質板でもよい。   In addition, the wall of the container having the circulation holes may be a perforated plate or a porous plate instead of a mesh.

以上のような構成を備える排水処理装置の吸着槽において、各吸着剤容器に２００ｋｇの吸着剤を収容して排水処理を行った。このときの排水の通水量は３ｔ／ｈであり、排水の油分濃度は５００ｍｇ／Ｌであった。また、排水処理を行った時間は２時間であり、排水に含まれて吸着槽に供給された油の総量は３ｋｇであった。   In the adsorption tank of the wastewater treatment apparatus having the above-described configuration, wastewater treatment was performed by storing 200 kg of the adsorbent in each adsorbent container. At this time, the water flow rate of the waste water was 3 t / h, and the oil concentration of the waste water was 500 mg / L. Moreover, the time which performed the waste_water | drain process was 2 hours, and the total amount of the oil contained in the waste_water | drain and supplied to the adsorption tank was 3 kg.

表１は、吸着剤として活性炭及び特開２００６−８２０６２号公報に開示されたか焼コークスを用いた場合における排水処理後の各吸着剤容器内の吸着剤の油分含有濃度(単位は、質量％)である。

Figure 2009172486
Table 1 shows the oil content concentration of the adsorbent in each adsorbent container after wastewater treatment when activated carbon and calcined coke disclosed in JP-A-2006-82062 are used as the adsorbent (unit: mass%). It is.
Figure 2009172486

表１に示すように、本実施形態における構成を有する吸着槽では、排水に含まれる油分を効果的に吸着して、十分な浄化性能を発揮することができた。このとき、排水処理後の吸着剤に含まれる油分含有濃度は、上段（排水流入側）が最も高く、活性炭で０．６質量％、か焼コークスで１．４質量％であった。これに対して、中段、下段（排水流出側）においては、活性炭及びか焼コークス共に０．１質量％前後であった。   As shown in Table 1, in the adsorption tank having the configuration in the present embodiment, the oil contained in the waste water was effectively adsorbed and sufficient purification performance could be exhibited. At this time, the oil content concentration contained in the adsorbent after the wastewater treatment was highest in the upper stage (drainage inflow side), which was 0.6% by mass for activated carbon and 1.4% by mass for calcined coke. On the other hand, in the middle stage and the lower stage (drainage outflow side), both the activated carbon and the calcined coke were around 0.1% by mass.

このように、吸着剤に油が吸着する割合は、排水流入側と排水流出側とで大きく異なる。したがって、吸着剤の吸着性能の劣化は、排水流入側の吸着剤において主として進行することとなる。そこで、本発明に係る排水処理装置のように、吸着槽の排水流通方向に沿って複数の吸着剤容器を備え、これらの吸着剤容器内に吸着剤を収容する。これにより、吸着槽の浄化能力が低下した場合に、排水流入側の吸着剤を選択的に交換することで、吸着槽の浄化処理能力を効率よく回復させることができる。   Thus, the rate at which oil is adsorbed by the adsorbent differs greatly between the drainage inflow side and the drainage outflow side. Therefore, the deterioration of the adsorption performance of the adsorbent mainly proceeds in the adsorbent on the waste water inflow side. Therefore, as in the wastewater treatment apparatus according to the present invention, a plurality of adsorbent containers are provided along the drainage flow direction of the adsorption tank, and the adsorbent is accommodated in these adsorbent containers. Thereby, when the purification capacity of the adsorption tank is reduced, the purification capacity of the adsorption tank can be efficiently recovered by selectively replacing the adsorbent on the waste water inflow side.

本発明に係る排水処理装置における排水処理のフロー図である。It is a flowchart of the waste water treatment in the waste water treatment equipment concerning the present invention. 図１の第一吸着槽を示す概略断面図である。It is a schematic sectional drawing which shows the 1st adsorption tank of FIG. （ａ）図２の吸着剤容器を下方から見た斜視図である。（ｂ）図２の吸着剤容器を上方から見た斜視図である。(A) It is the perspective view which looked at the adsorbent container of FIG. 2 from the downward direction. (B) It is the perspective view which looked at the adsorbent container of FIG. 2 from upper direction. 図２の逆洗環を示す斜視図である。It is a perspective view which shows the backwash ring of FIG.

符号の説明Explanation of symbols

１…排水処理装置、２…油水分離槽、３…第一吸着槽（槽）、４…第二吸着槽（槽）、５…第三吸着槽（槽）、６…処理水水槽、７…予備槽（槽）、８…水質モニタ（水質検知手段）、９…逆洗装置、１０、１１、１２、１３…ポンプ、１４…切り替え弁（切り替え手段）、３０、３１、３２…吸着剤容器（容器）、３３、３４、３５…吸着剤、３６…逆洗用弁、４０、４１、４２…逆洗環、４０ａ、４１ａ、４２ａ…逆洗孔。   DESCRIPTION OF SYMBOLS 1 ... Waste water treatment apparatus, 2 ... Oil-water separation tank, 3 ... 1st adsorption tank (tank), 4 ... 2nd adsorption tank (tank), 5 ... 3rd adsorption tank (tank), 6 ... Treated water tank, 7 ... Preliminary tank (tank), 8 ... Water quality monitor (water quality detection means), 9 ... Backwash device, 10, 11, 12, 13 ... Pump, 14 ... Switching valve (switching means), 30, 31, 32 ... Adsorbent container (Containers), 33, 34, 35 ... adsorbents, 36 ... backwash valves, 40, 41, 42 ... backwash rings, 40a, 41a, 42a ... backwash holes.

Claims (5)

排水が供給される槽と、
吸着剤を収容する容器と、を備え、
前記容器は、前記槽内に配置され、前記容器の壁は、前記容器内外間での前記排水の流通を可能とする流通孔を有することを特徴とする排水処理装置。 A tank to which drainage is supplied;
A container for containing an adsorbent,
The said container is arrange | positioned in the said tank, The wall of the said container has a flow hole which enables the distribution | circulation of the said waste_water | drain between the inside and outside of the said container, The waste water treatment apparatus characterized by the above-mentioned. 前記容器を、前記槽内に複数備える請求項１に記載の排水処理装置。   The wastewater treatment apparatus according to claim 1, wherein a plurality of the containers are provided in the tank. 前記容器を、前記槽内における前記排水の流通方向に沿って複数段備える請求項１又は請求項２に記載の排水処理装置。   The wastewater treatment apparatus according to claim 1 or 2, wherein the container is provided with a plurality of stages along the flow direction of the wastewater in the tank. 前記槽内における前記容器の下方に配置された、逆洗用流体を上方に排出する逆洗孔を更に備える請求項１〜３のうちいずれか一項に記載の排水処理装置。   The wastewater treatment apparatus according to any one of claims 1 to 3, further comprising a backwash hole that is disposed below the container in the tank and discharges the backwash fluid upward. 前記槽を並列に複数備え、
前記槽から排出される排水の水質を検知する水質検知手段と、
前記排水の一方の槽への供給と、他方の槽への供給とを切り替える切り替え手段と、
を更に備える請求項１〜４のうちいずれか一項に記載の排水処理装置。
A plurality of the tanks are provided in parallel,
Water quality detection means for detecting the quality of the drainage discharged from the tank;
Switching means for switching between the supply of the waste water to one tank and the supply to the other tank;
The wastewater treatment apparatus according to any one of claims 1 to 4, further comprising:
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JP2011189257A (en) * 2010-03-12 2011-09-29 Toshiba Corp Water treatment system
JP2011251232A (en) * 2010-06-01 2011-12-15 Toyobo Co Ltd Waste water treatment apparatus
JP2014188482A (en) * 2013-03-28 2014-10-06 Panasonic Corp Groundwater purification apparatus
JP2017087134A (en) * 2015-11-10 2017-05-25 住友金属鉱山株式会社 Maintenance method of column packed with activated carbon
JP2019155240A (en) * 2018-03-09 2019-09-19 株式会社オメガ Water treatment mechanism and maintenance system thereof
KR102073041B1 (en) * 2019-05-02 2020-02-04 주식회사 현진기업 Water purification system using drawer type multipurpose water purification system
JP2020025905A (en) * 2018-08-09 2020-02-20 株式会社大丸テクノ Waste liquid treatment method and waste liquid treatment device
JP6813863B1 (en) * 2020-03-26 2021-01-13 Ｊトップ株式会社 Adsorbent regenerator, adsorbent regeneration method and adsorbent cooling method

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JP2011189257A (en) * 2010-03-12 2011-09-29 Toshiba Corp Water treatment system
JP2011251232A (en) * 2010-06-01 2011-12-15 Toyobo Co Ltd Waste water treatment apparatus
JP2014188482A (en) * 2013-03-28 2014-10-06 Panasonic Corp Groundwater purification apparatus
JP2017087134A (en) * 2015-11-10 2017-05-25 住友金属鉱山株式会社 Maintenance method of column packed with activated carbon
JP2019155240A (en) * 2018-03-09 2019-09-19 株式会社オメガ Water treatment mechanism and maintenance system thereof
JP2020025905A (en) * 2018-08-09 2020-02-20 株式会社大丸テクノ Waste liquid treatment method and waste liquid treatment device
KR102073041B1 (en) * 2019-05-02 2020-02-04 주식회사 현진기업 Water purification system using drawer type multipurpose water purification system
JP6813863B1 (en) * 2020-03-26 2021-01-13 Ｊトップ株式会社 Adsorbent regenerator, adsorbent regeneration method and adsorbent cooling method

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