JP2004148247A - Water treatment equipment - Google Patents

Water treatment equipment Download PDF

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Publication number
JP2004148247A
JP2004148247A JP2002318142A JP2002318142A JP2004148247A JP 2004148247 A JP2004148247 A JP 2004148247A JP 2002318142 A JP2002318142 A JP 2002318142A JP 2002318142 A JP2002318142 A JP 2002318142A JP 2004148247 A JP2004148247 A JP 2004148247A
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Japan
Prior art keywords
water
ozone
treated
treatment
tower
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JP2002318142A
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Japanese (ja)
Inventor
Masayuki Endo
正幸 遠藤
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Tada Electric Co Ltd
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Tada Electric Co Ltd
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Priority to JP2002318142A priority Critical patent/JP2004148247A/en
Publication of JP2004148247A publication Critical patent/JP2004148247A/en
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  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide water treatment equipment which can be installed even within a small site and is low in construction cost and running cost. <P>SOLUTION: A defoaming equipment 4 for defoaming foam caused on the water surface of a water to be treated within an ozone treatment tower 3 is installed at a point higher than the water surface within the column 3 and communicated with the exhaust 33 of the unreacted ozone of the tower 3. The treated water treated in the tower 3 is supplied by a treated water feeder 8 to the sprinkler nozzle 42 of the equipment 4, or the equipment 4 and an ozonolysis equipment 5 are omitted and the unreacted ozone discharged from the tower 3 is fed to a raw water tank 1. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、水処理装置に関し、詳しくは被処理水をオゾンにより処理する水処理装置に関するものである。
【0002】
【従来の技術】
河川水、湖水、工場廃水などの各種の被処理水をオゾンにより処理する技術の改良が斯界では益々重要となっている。オゾンは、強力な酸化力を有していて、特に有機物の不飽和二重結合を選択的に酸化分解する作用を示す。有色性有機物は、一般的に幾つかの不飽和二重結合を含んでいて、オゾンはかかる不飽和二重結合個所を攻撃して水中の有色性有機物を酸化分解し、被処理水を脱色し、CODを低減する作用をなす。
【0003】
図4は、従来の水処理装置の概略系統図である。図4において、1は原水タンク、2はオゾン発生装置、3はオゾン処理塔、4は消泡装置、5はオゾン分解装置である。これら各装置の詳細は、本発明の実施の形態において詳細に説明するので、ここでは水処理装置の概要と問題点に就きつぎに説明する。なお図4および後記の図1〜図3では、互いに同じ部位には同じ符号を付し、各部位および符号の詳細は図1に就いての説明を参照することにして、図4では一部の部位のみに就き説明する。
【0004】
原水タンク1に収容された被処理水は、オゾン処理塔3においてオゾン発生装置2から供給されたオゾンにより処理される。オゾン処理塔3において未反応のオゾンは、消泡装置4を経由してオゾン分解装置5に送られ、そこで分解される。無害化したガスは大気中に放出される。
【0005】
ところでオゾン処理塔3においては、多くの場合、未反応オゾンの浮上、および被処理水に含まれていた有機物や浮遊物のオゾン処理による酸化分解の際に発生した気体の浮上などのために、被処理水の水面上には多量の泡が堆積する。それらの泡は、ガス管路7を通ってオゾン分解装置5に達し、当該装置5に充填されたオゾン分解剤を湿らして当該分解剤のオゾン分解能力を低下させる。このために従来から、オゾン処理塔3とオゾン分解装置5との間に消泡装置4を設置して、ガス管路部分72内を未反応オゾンの移動に基づいて移動して来る泡を破壊し、オゾンのみがオゾン分解装置5に至るようにしている。
【0006】
消泡装置4は、一般的に固形の充填材を堆積した通気性の固形物充填部41と当該部41の上の設けられた散水ノズル42とから構成されている。オゾン処理塔3内の泡と気体(主として未反応のオゾン、以下、泡膨張気体と称する)との混合物が固形物充填部41を通過して当該部41の上部表面に達した際、多数の泡は合体し、且つ上記泡膨張気により膨らまされて大きくなる。大きくなった泡は、散水ノズル42からの散水により消滅され、かくして消泡が達成される。
【0007】
ところで近時においては、小さな敷地内でも設置可能で、しかも建設費並びにランニングコストが低い水処理装置の要求が高まっている。これに対して前記した従来技術では、オゾン処理塔3と消泡装置4とオゾン分解装置5とを別々に組み立てる必要がある、それら装置の設置スペースが個別に必要となる、ガス管路7でそれらを接続する必要がある、などの構造上の問題がある。加えて、消泡装置4の散水ノズル42に泡を破壊するための水(矢印A)を外部から絶えず供給する必要であって、ランニングコストが大きくなる問題もある。
【0008】
【発明が解決しようとする課題】
従来技術における如上の諸問題に鑑みて、本発明の第一の課題は小さな敷地内でも設置可能で、しかも建設費が低い水処理装置を提供することにある。本発明の第二の課題は、さらにランニングコストが低い水処理装置を提供することにある。
【0009】
【課題を解決するための手段】
本発明の請求項1に係る水処理装置は、オゾン供給装置、上記オゾン供給装置から供給されたオゾンにより被処理水を処理するオゾン処理装置、上記オゾン処理装置から排出される未反応オゾンを分解するためのオゾン分解剤を有するオゾン分解装置、上記被処理水の水面に発生する泡を散水により消滅させと共に上記オゾン処理装置内の上記水面より上で且つ上記オゾン処理装置の上記未反応オゾンの排気口に通じる個所に設置され消泡装置を備えたことを特徴とするものである。
【0010】
本発明の請求項2に係る水処理装置は、請求項1において、上記オゾン処理装置により処理された処理水を上記散水に利用するために上記消泡装置に供給する処理水供給装置を備えたことを特徴とするものである。
【0011】
本発明の請求項3に係る水処理装置は、被処理水を収容した被処理水収容装置、オゾン供給装置、上記オゾン供給装置から供給されたオゾンにより上記被処理水を処理するオゾン処理装置、上記オゾン処理装置から排出される未反応オゾンを上記被処理水収容装置内の被処理水中に散気する散気装置を備えたことを特徴とするものである。
【0012】
【発明の実施の形態】
実施の形態1.
図1は、本発明の水処理装置における実施の形態1の概略系統図である。図1において、1は前記被処理水収容装置の一例としての原水タンク、2は前記オゾン供給装置の一例としてのオゾン発生装置、3は前記オゾン処理装置の一例としてのオゾン処理塔、4は消泡装置、5はオゾン分解装置である。なお図1において実線上の矢印は水の移動方向を示し、点線上の矢印は気体の移動方向を示す。
【0013】
原水タンク1には、オゾン処理対処の前記した各種の被処理水の一例、例えば河川水が収容されており、この被処理水は、原水タンク1中に設置された送水ポンプ11により水管路6のうちの、バルブ611、ストレーナ612、バルブ613、および流量計614を順次備えた水管路部分61を通ってオゾン処理塔3に送られる。オゾン処理塔3内には、散水ノズル31と散気管32が設けられていて、被処理水は水管路部分61を経て散水ノズル31からオゾン処理塔3内に散水される。一方、オゾン発生装置2において発生したオゾンは、ガス管路7のうちのガス管路部分71を経て散気管32からオゾン処理塔3内の被処理水中に散気される。この散気によりオゾン処理された被処理水(以下、処理水)は、水管路6のうちの水管路部分62から所望個所、例えば浄水タンク(図示せず)に送水される。
【0014】
消泡装置4は、オゾン処理塔3内の気相部に、詳しくはオゾン処理塔3内の被処理水の水面と未反応オゾンの排気口33との間に設置されている。消泡装置4自体は、従来技術と同じ構造を有するものであってもよく、例えば固形物充填部41と前記散水部の一例としての散水ノズル42とを含む。固形物充填部41は、上記水面上の多量の小さな泡または当該泡を形成する材料が前記した泡膨張気体と一緒に固形物充填部41を通過してその上部表面に達した際に、当該泡膨張気体により膨らまされて大きくされるように作用するものであればよく、一般的には各種の固形物が通気性を保持した状態で適当な筒体内に充填されたような構造のもの、例えばプラスチック製の網の捲巻物を上記筒体内に装着したものが例示される。散水ノズル42は、固形物充填部41の上部表面で膨張した泡を散水により破壊できるように固形物充填部41の上部に設置され、泡破壊用の水(矢印A)が供給される。
【0015】
消泡装置4を通過して、消泡された未反応オゾンは、オゾン分解装置5においてオゾン分解剤にて分解され、無害化ガスが大気中に放出(矢印B)される。上記オゾン分解剤としては、斯界で公知あるいは周知のものが制限なく採用可能であって例えば活性炭、活性炭をシリカアルミナゲルで固定したもの、二酸化マンガンを主成分とした触媒などが挙げられる。
【0016】
以上のように実施の形態1の水処理装置では、消泡装置4はオゾン処理塔3内に設置されているので、実施の形態1における消泡装置4とオゾン処理塔3との総体は、従来技術に消泡装置4とオゾン処理塔3との総体と比較してコンパクトであり、しかも従来技術では必要であった消泡装置4とオゾン処理塔3とを繋ぐガス管路並びにその配管工事が不要となるので、小さな敷地内でも設置可能で、しかも建設費が安価となる効果がある。
【0017】
実施の形態2.
図2は、本発明の水処理装置における実施の形態2の概略系統図である。図2において、8はオゾン処理塔3により処理された処理水を消泡装置散4の散水ノズル42に供給する処理水供給装置であって、実施の形態2は、実施の形態1とは処理水供給装置8を備えた点において異なり、その他の構成は同じである。
【0018】
処理水供給装置8は、水管路81、送水ポンプ82、バルブ83、および流量計84を含む。水管路81は、オゾン処理塔3の下部、送水ポンプ82、バルブ83、流量計84および散水ノズル42を順次繋ぎ、送水ポンプ82によりオゾン処理塔3内の処理水を取水して散水ノズル42に供給する。散水ノズル42に供給される当該処理水としては、オゾン処理の程度が可及的高度に進んだ状態のものが一般的に好ましいが、ある程度進んだ状態のものであってもよい。実施の形態1や実施の形態2のように、オゾン処理塔3内ではオゾンの散気が被処理水の全体に行き渡り易いように、散気管32はオゾン処理塔3内の底に近い個所に設置され、一方、散水ノズル31はオゾン処理塔3内の上部に設置して原水タンク1内の被処理水をオゾン処理塔3の上部から供給し、処理水はオゾン処理塔3の下部から取り出すようにされる。散気管32および散水ノズル31がそのように配置されると、オゾン処理塔3では、オゾン処理塔3の下部ほどオゾン処理の程度は進んでいるので、本発明においては、散水ノズル42に供給される当該処理水としては、オゾン処理塔3内の水位の少なくとも中位以下、特に散気管32の設置位置の近傍から取水することが好ましい。
【0019】
実施の形態2の水処理装置は、散水ノズル42に供給される水としてオゾン処理塔3内の処理水とが利用されるので、散水ノズル42に供給される水を外部に求める必要がないので、ランニングコストが低くなる効果がある。
【0020】
実施の形態3.
図3は、本発明の水処理装置における実施の形態2の概略系統図である。図3において、12は原水タンク1内に設置された散気管、73はオゾン処理塔3の排気口33と散気管12とを繋ぐガス管路部分、731はガス管路部分73に設けられたバルブである。しかして実施の形態3は、前記実施の形態1や実施の形態1とは、消泡装置4、オゾン分解装置5、処理水利用装置8、並びにそれら装置に付随した水管路部分やガス管路部分が省略され、散気管12、ガス管路部分73、およびバルブ731が設けられた点において異なり、その他の構成は同じである。実施の形態3では、実施の形態1、2における消泡は行わずに、オゾン処理塔3内の未反応オゾンは、排気口33からガス管路部分73およびバルブ731を介して散気管12に送られ、散気管12から原水タンク1内の被処理水中に散気される。その際、オゾン処理塔3内の前記した泡の一部は、排気口33からガス管路部分73に侵入し、場合によっては原水タンク1内に入り込むこともあるが、実施の形態3の装置では、泡のかかる入り込みがあっても、装置上においてもオゾン処理操作上においても不都合をきたすことがない。なおガス管路部分73に泡が入り込んでも、未反応オゾンは泡を破壊しつつ原水タンク1に向かって移動するので、ガス管路部分73および散気管12が泡で詰まる問題は実際上ない。
【0021】
実施の形態3の水処理装置は、消泡装置4やオゾン分解装置5などが省略されているので、実施の形態1、2の水処理装置以上に小さな敷地内でも設置可能で、しかも建設費が低い。さらに消泡のための水の供給が不要であって、加えて未反応オゾンを原水タンク1内の被処理水の前処理用として無駄なく再利用できて、ランニングコストが一層低くなる大きな効果がある。
【0022】
【発明の効果】
本発明の請求項1に係る水処理装置は、以上説明した通り、オゾン供給装置、上記オゾン供給装置から供給されたオゾンにより被処理水を処理するオゾン処理装置、上記オゾン処理装置から排出される未反応オゾンを分解するためのオゾン分解剤を有するオゾン分解装置、上記被処理水の水面に発生する泡を散水により消滅させると共に上記オゾン処理装置内の上記水面より上で且つ上記オゾン処理装置の上記未反応オゾンの排気口に通じる個所に設置され消泡装置を備えたことを特徴とするものであって、消泡装置はオゾン処理装置内に設置されているので、消泡装置とオゾン処理装置との総体は、従来技術におけるそれと比較してコンパクトであり、しかも従来技術では必要であった消泡装置とオオゾン処理装置とを繋ぐガス管路並びにその配管工事が不要となるので、小さな敷地内でも設置可能で、しかも建設費が安価となる効果がある。
【0023】
また上記オゾン処理装置により処理された処理水を上記散水に利用するために上記消泡装置に供給する処理水供給装置を備えていると、散水ノズル42に供給される水を外部に求める必要がないので、ランニングコストが低くなる効果がある。
【0024】
本発明の請求項3に係る水処理装置は、以上説明した通り、被処理水を収容した被処理水収容装置、オゾン供給装置、上記オゾン供給装置から供給されたオゾンにより上記被処理水を処理するオゾン処理装置、上記オゾン処理装置から排出される未反応オゾンを上記被処理水収容装置内の被処理水中に散気する散気装置を備えたものであって、消泡装置やオゾン分解装置などが省略されているので、請求項1の水処理装置以上に小さな敷地内でも設置可能で、しかも建設費が低い。さらに消泡のための水の供給が不要であって、加えて未反応オゾンを原水タンク内の被処理水の前処理として無駄なく再利用できて、ランニングコストが一層低くなる大きな効果がある。
【図面の簡単な説明】
【図1】実施の形態1の概略系統図。
【図2】実施の形態2の概略系統図。
【図3】実施の形態3の概略系統図。
【図4】従来の水処理装置の概略系統図
【符号の説明】
1 原水タンク、11 送水ポンプ、12 散気管、2 オゾン発生装置、
3 オゾン処理塔、31 散水ノズル、32 散気管、33 排気口、
4 消泡装置、41 固形物充填部、42 散水ノズル、5 オゾン分解装置、
6管路、7 ガス管路、8 処理水供給装置。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a water treatment apparatus, and more particularly, to a water treatment apparatus that treats water to be treated with ozone.
[0002]
[Prior art]
Improvements in the technology for treating various types of water to be treated, such as river water, lake water, and industrial wastewater, with ozone have become increasingly important in the art. Ozone has a strong oxidizing power, and particularly exhibits an action of selectively oxidatively decomposing unsaturated double bonds of organic substances. Colored organic matter generally contains some unsaturated double bonds, and ozone attacks such unsaturated double bond sites to oxidatively decompose colored organic matter in water and decolorize the water to be treated. , COD.
[0003]
FIG. 4 is a schematic system diagram of a conventional water treatment apparatus. In FIG. 4, 1 is a raw water tank, 2 is an ozone generator, 3 is an ozone treatment tower, 4 is a defoamer, and 5 is an ozone decomposer. Since the details of each of these devices will be described in detail in the embodiments of the present invention, the outline and problems of the water treatment device will be described hereafter. In FIG. 4 and FIGS. 1 to 3 described later, the same portions are denoted by the same reference numerals, and the details of each portion and reference numerals are referred to the description of FIG. Explanations will be given only for the parts of FIG.
[0004]
The water to be treated contained in the raw water tank 1 is treated in the ozone treatment tower 3 by ozone supplied from the ozone generator 2. The unreacted ozone in the ozone treatment tower 3 is sent to the ozone decomposer 5 via the defoaming device 4, where it is decomposed. The detoxified gas is released into the atmosphere.
[0005]
By the way, in the ozone treatment tower 3, in many cases, for the floating of unreacted ozone and the floating of gas generated during the oxidative decomposition of the organic substances and suspended matters contained in the water to be treated by the ozone treatment, A large amount of bubbles accumulate on the surface of the water to be treated. The bubbles reach the ozonolysis device 5 through the gas line 7 and moisten the ozonolysis agent filled in the ozonolysis device 5 to reduce the ozonolysis ability of the decomposition agent. For this purpose, a defoaming device 4 is conventionally provided between the ozone treatment tower 3 and the ozone decomposing device 5 to destroy bubbles that move in the gas pipeline 72 based on the movement of unreacted ozone. Then, only the ozone is allowed to reach the ozone decomposer 5.
[0006]
The defoaming device 4 generally includes a gas-permeable solid material filling portion 41 on which a solid filler is deposited, and a water spray nozzle 42 provided on the portion 41. When a mixture of bubbles and gas (mainly unreacted ozone, hereinafter referred to as bubble expanding gas) in the ozone treatment tower 3 passes through the solid material filling portion 41 and reaches the upper surface of the portion 41, a large number of The bubbles are coalesced and expanded by the foam expansion. The foam that has become larger is extinguished by water spray from the water spray nozzle 42, and thus defoaming is achieved.
[0007]
In recent years, there has been an increasing demand for a water treatment apparatus that can be installed even in a small site and has low construction costs and running costs. On the other hand, in the above-mentioned prior art, the ozone treatment tower 3, the defoaming device 4, and the ozone decomposing device 5 need to be separately assembled, and the installation space of those devices is individually required. There are structural problems such as the need to connect them. In addition, it is necessary to constantly supply water (arrow A) for breaking bubbles to the water spray nozzle 42 of the defoaming device 4 from the outside, and there is a problem that running costs increase.
[0008]
[Problems to be solved by the invention]
In view of the above problems in the prior art, a first object of the present invention is to provide a water treatment apparatus that can be installed in a small site and has a low construction cost. A second object of the present invention is to provide a water treatment apparatus having a lower running cost.
[0009]
[Means for Solving the Problems]
The water treatment apparatus according to claim 1 of the present invention is an ozone supply apparatus, an ozone treatment apparatus that treats water to be treated with ozone supplied from the ozone supply apparatus, and decomposes unreacted ozone discharged from the ozone treatment apparatus. An ozone decomposer having an ozone decomposer for removing bubbles generated on the water surface of the water to be treated by spraying water and removing the unreacted ozone of the ozone treatment device above the water surface in the ozonation device. It is characterized by being provided with a defoaming device installed at a place communicating with the exhaust port.
[0010]
A water treatment apparatus according to a second aspect of the present invention is the water treatment apparatus according to the first aspect, further including a treated water supply device that supplies the treated water treated by the ozone treatment device to the defoaming device in order to use the treated water for the water spray. It is characterized by the following.
[0011]
The water treatment device according to claim 3 of the present invention is a treated water storage device containing treated water, an ozone supply device, an ozone treatment device that treats the treated water with ozone supplied from the ozone supply device, The apparatus further comprises a diffuser for diffusing unreacted ozone discharged from the ozone treatment device into the water to be treated in the treatment water storage device.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a schematic system diagram of Embodiment 1 of the water treatment apparatus of the present invention. In FIG. 1, reference numeral 1 denotes a raw water tank as an example of the to-be-treated water storage device, 2 denotes an ozone generator as an example of the ozone supply device, 3 denotes an ozone treatment tower as an example of the ozone treatment device, and 4 denotes an ozone treatment tower. The foam device 5 is an ozonolysis device. In FIG. 1, the arrow on the solid line indicates the moving direction of water, and the arrow on the dotted line indicates the moving direction of gas.
[0013]
The raw water tank 1 contains an example of the above-mentioned various types of water to be treated for ozone treatment, for example, river water, and this water to be processed is supplied to a water line 6 by a water supply pump 11 installed in the raw water tank 1. Among them, the water is sent to the ozone treatment tower 3 through a water pipe section 61 sequentially provided with a valve 611, a strainer 612, a valve 613, and a flow meter 614. A water spray nozzle 31 and an air diffuser 32 are provided in the ozone treatment tower 3, and the water to be treated is sprayed from the water spray nozzle 31 into the ozone treatment tower 3 through a water pipe section 61. On the other hand, the ozone generated in the ozone generator 2 is diffused into the water to be treated in the ozone treatment tower 3 through the gas diffuser 32 via the gas conduit 71 of the gas conduit 7. The water to be treated (hereinafter referred to as treated water) that has been ozone-treated by the aeration is sent from a water pipe portion 62 of the water pipe 6 to a desired location, for example, a water purification tank (not shown).
[0014]
The defoaming device 4 is installed in a gas phase part in the ozone treatment tower 3, more specifically, between the surface of the water to be treated in the ozone treatment tower 3 and the exhaust port 33 of the unreacted ozone. The defoaming device 4 itself may have the same structure as the related art, and includes, for example, a solid filling unit 41 and a water spray nozzle 42 as an example of the water spray unit. The solid-filled portion 41, when a large amount of small bubbles on the water surface or the material forming the foam passes through the solid-filled portion 41 together with the foam expanding gas and reaches the upper surface thereof, Any structure may be used as long as it is inflated by the foam expanding gas and acts to increase the size, and in general, a structure in which various solids are filled in an appropriate cylinder while maintaining air permeability, For example, an example in which a roll of a plastic net is mounted in the above-described cylinder body is exemplified. The watering nozzle 42 is installed above the solid filling part 41 so that the foam expanded on the upper surface of the solid filling part 41 can be broken by watering, and water for breaking bubbles (arrow A) is supplied.
[0015]
The unreacted ozone defoamed after passing through the defoaming device 4 is decomposed by the ozonolysis agent in the ozone decomposing device 5, and the detoxifying gas is released into the atmosphere (arrow B). As the ozonolysis agent, any known or well-known ones in the art can be used without limitation, and examples thereof include activated carbon, those obtained by fixing activated carbon with silica-alumina gel, and catalysts containing manganese dioxide as a main component.
[0016]
As described above, in the water treatment apparatus according to the first embodiment, the defoaming device 4 is installed in the ozone treatment tower 3, and thus the entire defoaming device 4 and the ozone treatment tower 3 in the first embodiment are: The gas line connecting the defoaming device 4 and the ozone treatment tower 3 and the piping work required for the prior art are compact compared with the whole of the defoaming device 4 and the ozone treatment tower 3 in the prior art. Since it is not necessary, the device can be installed even in a small site, and the construction cost can be reduced.
[0017]
Embodiment 2 FIG.
FIG. 2 is a schematic system diagram of Embodiment 2 of the water treatment apparatus of the present invention. In FIG. 2, reference numeral 8 denotes a treated water supply device for supplying treated water treated by the ozone treatment tower 3 to the water spray nozzle 42 of the defoaming device dispersion 4, and the second embodiment is different from the first embodiment in the treatment water supply device. The difference is that a water supply device 8 is provided, and other configurations are the same.
[0018]
The treated water supply device 8 includes a water pipe 81, a water pump 82, a valve 83, and a flow meter 84. The water pipe 81 connects the lower part of the ozone treatment tower 3, the water supply pump 82, the valve 83, the flow meter 84, and the sprinkling nozzle 42 in order. Supply. The treated water supplied to the watering nozzle 42 is generally preferably in a state in which the degree of ozone treatment has advanced as high as possible, but may be in a state in which it has advanced to some extent. As in the first and second embodiments, the air diffuser 32 is provided at a location near the bottom of the ozone treatment tower 3 so that the ozone diffuses easily throughout the water to be treated in the ozone treatment tower 3. On the other hand, the watering nozzle 31 is installed at the upper part in the ozone treatment tower 3 to supply the water to be treated in the raw water tank 1 from the upper part of the ozone treatment tower 3, and the treated water is taken out from the lower part of the ozone treatment tower 3. Is to be. When the air diffuser 32 and the water spray nozzle 31 are arranged in such a manner, in the ozone treatment tower 3, the degree of ozone treatment is advanced toward the lower part of the ozone treatment tower 3. It is preferable that the treated water be taken from at least a middle water level in the ozone treatment tower 3, particularly from the vicinity of the installation position of the air diffuser 32.
[0019]
In the water treatment apparatus according to the second embodiment, since the treated water in the ozone treatment tower 3 is used as the water supplied to the watering nozzle 42, it is not necessary to obtain the water supplied to the watering nozzle 42 outside. This has the effect of lowering running costs.
[0020]
Embodiment 3 FIG.
FIG. 3 is a schematic system diagram of Embodiment 2 of the water treatment apparatus of the present invention. In FIG. 3, reference numeral 12 denotes an air diffuser installed in the raw water tank 1, reference numeral 73 denotes a gas pipe connecting the exhaust port 33 of the ozone treatment tower 3 to the air diffuser 12, and reference numeral 731 denotes a gas pipe 73. It is a valve. The third embodiment is different from the first and the first embodiments in that the defoaming device 4, the ozone decomposing device 5, the treated water utilization device 8, and the water pipe portion and the gas pipe associated with these devices are used. The other configuration is the same except that the portion is omitted and the air diffuser 12, the gas line portion 73, and the valve 731 are provided. In the third embodiment, the unreacted ozone in the ozone treatment tower 3 is supplied from the exhaust port 33 to the air diffuser 12 via the gas line portion 73 and the valve 731 without performing the defoaming in the first and second embodiments. The water is sent and diffused from the diffuser pipe 12 into the water to be treated in the raw water tank 1. At this time, a part of the foam in the ozone treatment tower 3 enters the gas pipeline portion 73 from the exhaust port 33 and may enter the raw water tank 1 in some cases. Thus, even if there is such an intrusion of bubbles, there is no inconvenience on the apparatus and the ozone treatment operation. Even if bubbles enter the gas pipeline portion 73, the unreacted ozone moves toward the raw water tank 1 while destroying the bubbles, so that there is practically no problem that the gas pipeline portion 73 and the diffuser 12 are clogged with the bubbles.
[0021]
Since the water treatment apparatus of the third embodiment does not include the defoaming apparatus 4 and the ozonolysis apparatus 5, it can be installed in a smaller site than the water treatment apparatuses of the first and second embodiments, and furthermore, the construction cost Is low. Further, there is no need to supply water for defoaming, and in addition, the unreacted ozone can be reused without waste for the pretreatment of the water to be treated in the raw water tank 1, resulting in a great effect that the running cost is further reduced. is there.
[0022]
【The invention's effect】
As described above, the water treatment device according to claim 1 of the present invention is an ozone supply device, an ozone treatment device that treats water to be treated with ozone supplied from the ozone supply device, and discharged from the ozone treatment device. An ozone decomposer having an ozone decomposer for decomposing unreacted ozone, a method for eliminating bubbles generated on the surface of the water to be treated by spraying water and at a level above the water surface in the ozone treatment device and the ozone treatment device. A defoaming device is provided at a location communicating with the outlet of the unreacted ozone, and the defoaming device is provided in the ozone treatment device. The whole of the device is compact compared to that of the prior art, and the gas line connecting the defoaming device and the ozone treatment device, which was required in the prior art, and Since the plumbing is not required, it can also be installed in a small on-site, yet construction costs there is an effect to be less expensive.
[0023]
In addition, if a treated water supply device is provided for supplying the treated water treated by the ozone treatment device to the defoaming device in order to use the treated water for the spraying, the water supplied to the spray nozzle 42 needs to be obtained outside. Since there is no running cost, there is an effect that the running cost is reduced.
[0024]
As described above, the water treatment apparatus according to claim 3 of the present invention treats the water to be treated with the ozone supplied from the water to be treated, the ozone supply device, and the ozone supply device. An ozone treatment device, a diffuser device for diffusing unreacted ozone discharged from the ozone treatment device into the water to be treated in the treatment water storage device, and a defoaming device or an ozone decomposing device. Since the components are omitted, they can be installed in a smaller site than the water treatment device of claim 1, and the construction cost is low. Further, there is no need to supply water for defoaming, and in addition, unreacted ozone can be reused without waste as a pretreatment of the water to be treated in the raw water tank, which has a great effect of further reducing running costs.
[Brief description of the drawings]
FIG. 1 is a schematic system diagram of a first embodiment.
FIG. 2 is a schematic system diagram of a second embodiment.
FIG. 3 is a schematic system diagram of a third embodiment.
FIG. 4 is a schematic system diagram of a conventional water treatment apparatus.
1 raw water tank, 11 water pump, 12 air diffuser, 2 ozone generator,
3 ozonation tower, 31 water spray nozzle, 32 air diffuser, 33 exhaust port,
4 defoaming device, 41 solid material filling section, 42 watering nozzle, 5 ozone decomposition device,
6 pipes, 7 gas pipes, 8 treated water supply device.

Claims (3)

オゾン供給装置、上記オゾン供給装置から供給されたオゾンにより被処理水を処理するオゾン処理装置、上記オゾン処理装置から排出される未反応オゾンを分解するためのオゾン分解剤を有するオゾン分解装置、上記被処理水の水面に発生する泡を散水により消滅させると共に上記オゾン処理装置内の上記水面より上で且つ上記オゾン処理装置の上記未反応オゾンの排気口に通じる個所に設置され消泡装置を備えたことを特徴とする水処理装置。An ozone supply device, an ozone treatment device for treating water to be treated with ozone supplied from the ozone supply device, an ozone decomposition device having an ozone decomposing agent for decomposing unreacted ozone discharged from the ozone treatment device, Equipped with a defoaming device installed at a location connected to the outlet of the unreacted ozone of the ozonation device above the water surface in the ozonation device and eliminating bubbles generated on the surface of the water to be treated by spraying water. A water treatment apparatus, characterized in that: 上記オゾン処理装置により処理された処理水を上記散水に利用するために上記消泡装置に供給する処理水供給装置を備えたことを特徴とする請求項1記載の水処理装置。2. The water treatment device according to claim 1, further comprising a treated water supply device that supplies the treated water treated by the ozone treatment device to the defoaming device in order to use the treated water for the sprinkling. 被処理水を収容した被処理水収容装置、オゾン供給装置、上記オゾン供給装置から供給されたオゾンにより上記被処理水を処理するオゾン処理装置、上記オゾン処理装置から排出される未反応オゾンを上記被処理水収容装置内の被処理水中に散気する散気装置を備えたことを特徴とする水処理装置。A treated water storage device containing treated water, an ozone supply device, an ozone treatment device for treating the treated water with ozone supplied from the ozone supply device, and an unreacted ozone discharged from the ozone treatment device. A water treatment apparatus comprising an air diffuser for diffusing air into treated water in a treated water storage device.
JP2002318142A 2002-10-31 2002-10-31 Water treatment equipment Pending JP2004148247A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012096202A (en) * 2010-11-05 2012-05-24 Hitachi Ltd Membrane treatment facility
JP2015127673A (en) * 2013-12-27 2015-07-09 株式会社Ihi Radioactive waste liquid processing method and radioactive waste liquid processing apparatus
CN113788526A (en) * 2021-09-10 2021-12-14 南京水滴智能环保装备研究院有限公司 Novel ozone oxidation device combined with intelligent water affairs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012096202A (en) * 2010-11-05 2012-05-24 Hitachi Ltd Membrane treatment facility
JP2015127673A (en) * 2013-12-27 2015-07-09 株式会社Ihi Radioactive waste liquid processing method and radioactive waste liquid processing apparatus
CN113788526A (en) * 2021-09-10 2021-12-14 南京水滴智能环保装备研究院有限公司 Novel ozone oxidation device combined with intelligent water affairs

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