JPH0568983A - Cod treatment method and apparatus using ozone - Google Patents
Cod treatment method and apparatus using ozoneInfo
- Publication number
- JPH0568983A JPH0568983A JP23810991A JP23810991A JPH0568983A JP H0568983 A JPH0568983 A JP H0568983A JP 23810991 A JP23810991 A JP 23810991A JP 23810991 A JP23810991 A JP 23810991A JP H0568983 A JPH0568983 A JP H0568983A
- Authority
- JP
- Japan
- Prior art keywords
- ozone
- packed bed
- water
- activated carbon
- cod
- 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.)
- Pending
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 239000007788 liquid Substances 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 84
- 238000003672 processing method Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 4
- VNWKTOKETHGBQD-AKLPVKDBSA-N carbane Chemical class [15CH4] VNWKTOKETHGBQD-AKLPVKDBSA-N 0.000 abstract description 2
- 230000001174 ascending effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- -1 for example Substances 0.000 description 4
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000010800 human waste Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 235000013162 Cocos nucifera Nutrition 0.000 description 2
- 244000060011 Cocos nucifera Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000010903 husk Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、上水、下水、し尿等の
水処理プロセスにおけるオゾンを用いたＣＯＤ処理工程
の改善方法及び装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for improving a COD treatment step using ozone in a water treatment process for tap water, sewage, human waste and the like.
【０００２】[0002]
【従来の技術】従来、オゾンによる水処理工程は、単な
る槽に原水を満たし、オゾンガスを供給するか、エジェ
クターなどであらかじめ、オゾン溶解水をつくり、これ
を原水に混合する方法が採用されていた。しかし、次の
ような問題点があり、改善策が求められていた。2. Description of the Related Art Conventionally, in a water treatment process using ozone, a method has been adopted in which raw water is simply filled in a tank and ozone gas is supplied or ozone-dissolved water is prepared in advance by an ejector or the like and then mixed with the raw water. .. However, there were the following problems, and improvement measures were required.
【０００３】 オゾンの溶解効率が悪い。 オゾン接触槽から未吸収の排オゾンが排出され、排
オゾンを活性炭等で分解処理しなければならない。 色度は良く除去されるが、ＣＯＤ成分の除去率が悪
い。 従って、特にＣＯＤの高度除去が要求されるし尿処理で
は必ずオゾン処理のあとに活性炭処理を行い、ＣＯＤを
高度に除去することが必須であった。The dissolution efficiency of ozone is poor. Unabsorbed waste ozone is discharged from the ozone contact tank, and the waste ozone must be decomposed with activated carbon or the like. The chromaticity is well removed, but the COD component removal rate is poor. Therefore, particularly in the treatment of night soil, which requires a high degree of COD removal, it was essential to perform a high-grade removal of COD by always performing an ozone treatment followed by an activated carbon treatment.
【０００４】しかし、活性炭処理はコストが高く、活性
炭の再生が面倒である。However, the treatment of activated carbon is expensive and the regeneration of activated carbon is troublesome.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、オゾン溶解
効率を向上させ、排オゾンの処理を不要にし、更にＣＯ
Ｄ除去率を向上させることが可能な新規方法を確立する
ことを課題としている。SUMMARY OF THE INVENTION The present invention improves ozone dissolution efficiency, eliminates the need for treatment of exhaust ozone, and further reduces CO
The object is to establish a new method capable of improving the D removal rate.
【０００６】[0006]
【課題を解決するための手段】本発明は、 粒状活性
炭の充填層を少なくとも一部が、液中に浸漬して設けら
れ、該充填層の下部よりオゾンガスを直接散気しつつ、
処理対象水を供給し、該充填層を通過させることを特徴
とするオゾンを用いたＣＯＤ処理方法、及び 少なく
とも一部が液中に浸漬された粒状活性炭の充填層と、該
充填層の下方に設けられたオゾン散気装置と、上向流又
は下向流で処理対象水が該充填層を通過するよう設けら
れた流入・放流用水管を設けてなるオゾンを用いたＣＯ
Ｄ処理装置、であり、これにより、上記課題を解決でき
る。According to the present invention, at least a part of a packed bed of granular activated carbon is provided by being immersed in a liquid, while ozone gas is directly diffused from the lower part of the packed bed,
A COD treatment method using ozone, which comprises supplying water to be treated and passing it through the packed bed, and a packed bed of granular activated carbon at least a part of which is immersed in a liquid, and below the packed bed. CO using ozone provided with an ozone diffuser provided and an inflow / outflow water pipe provided so that the water to be treated passes through the packed bed in an upward flow or a downward flow.
This is a D processing device, which can solve the above problems.
【０００７】即ち、本発明の特徴は、処理対象水をオゾ
ン処理するオゾン接触槽として粒状活性炭の充填層を採
用したことにあり、言い換えれば粒状活性炭の存在下で
処理対象水とオゾンを接触させる点にある。このような
粒状活性炭存在下において処理対象水をオゾン処理する
ことにより、処理対象水中に含まれるＳＳ等を物理的に
濾過すると共に同水中に含まれるＣＯＤ、色度などの難
生物分解性有機物を高効率に酸化することができる。ま
た、本発明は注入されるオゾンの消費効率が高いので系
外に排出される排オゾンの濃度を極めて低くすることが
できるため排オゾン処理装置を不要とし、かつ粒状活性
炭の表面もオゾン酸化を受けるため使用済活性炭を使用
することができる等の利点を有する。That is, the feature of the present invention resides in that a packed bed of granular activated carbon is adopted as an ozone contact tank for ozone treatment of the water to be treated, in other words, the water to be treated and ozone are brought into contact with each other in the presence of the granular activated carbon. There is a point. By subjecting the water to be treated to ozone treatment in the presence of such granular activated carbon, SS and the like contained in the water to be treated are physically filtered, and at the same time, COD, chromaticity and other hardly biodegradable organic substances contained in the water are treated. It can be oxidized with high efficiency. Further, since the present invention has a high consumption efficiency of injected ozone, the concentration of exhaust ozone discharged to the outside of the system can be made extremely low, thus eliminating the need for an exhaust ozone treatment device and eliminating ozone oxidation on the surface of the granular activated carbon. It has an advantage that used activated carbon can be used for receiving.
【０００８】本発明において、オゾンの充填層への供給
方法は特に制限なく任意の公知の装置、構成が使用でき
る。本発明におけるオゾン供給量は、処理対象水のＣＯ
Ｄ含量、粒状活性炭充填層の仕様、処理速度、目的処理
水の水質基準等により種々設定することができるが、通
常、処理対象水としてはＣＯＤ １００ｍｇ／Ｌ（リッ
トル）以下の場合、オゾン供給量は５００ｍｇ／Ｌ以下
に調整される。また、本発明は、排オゾン処理装置は通
常、不要であるが、所望により処理目的に応じて併用し
てもよい。In the present invention, the method for supplying ozone to the packed bed is not particularly limited, and any known apparatus and structure can be used. In the present invention, the ozone supply amount is the CO of the water to be treated.
It can be variously set according to the D content, the specification of the packed bed of granular activated carbon, the treatment speed, the water quality standard of the target treated water, etc. Normally, when the COD is 100 mg / L (liter) or less as the water to be treated, the ozone supply amount Is adjusted to 500 mg / L or less. Further, in the present invention, the exhaust ozone treatment device is usually unnecessary, but it may be used in combination depending on the treatment purpose if desired.
【０００９】本発明におけるオゾン供給は、オゾン含有
ガスの形態で行われるが、その組成は任意に設定するこ
とができる。オゾン散気装置の構成は公知のものが使用
でき、その散気部は、オゾン発生装置等と連絡され、か
つオゾン含有ガスを粒状活性炭充填層に効率よく供給す
るためにこの充填層の下方に配備される。ここで、充填
層の下方とは、該充填層を保持するために配備される支
持層またはその下部または充填層内の下部を包含する意
味である。支持層は、処理水を透過する多孔性部材で構
成しても砂利等で構成してもよい。また、散気部は、所
望により充填層下部以外に設けてもよい。In the present invention, ozone is supplied in the form of an ozone-containing gas, but its composition can be set arbitrarily. A known structure of the ozone diffusing device can be used, and the diffusing part is connected to the ozone generating device and the like, and is disposed below the packed bed in order to efficiently supply the ozone-containing gas to the granular activated carbon packed bed. Will be deployed. Here, the term "below the packed bed" is meant to include the support layer provided for holding the packed bed or the lower part thereof or the lower part within the packed bed. The support layer may be formed of a porous member that is permeable to treated water, gravel, or the like. Further, the air diffuser may be provided at a position other than the lower part of the packed bed, if desired.
【００１０】本発明において処理対象水は、充填層に対
し上向流で通しても下向流で通してもよく、本発明にお
いては、その両方式に対処できるように同一処理装置に
それらの流入用水管およびオゾン処理された処理水の放
流用水管を適宜配備することができる。この場合、必要
により弁、ポンプ等を配設してもよい。また、本発明の
充填層は、充填層密度等を調整するためにオゾン処理時
において処理対象水に常時浸漬されるようにしても上部
が一部常に浸漬した状態でないようにしてもよい。処理
対象水の水面は、放流用水管の立ち上げ等で調節でき
る。In the present invention, the water to be treated may be passed through the packed bed in an upward flow or a downward flow. In the present invention, both of them can be treated in the same treatment device so as to deal with both types. An inflow water pipe and an ozonated treated water discharge water pipe can be appropriately provided. In this case, a valve, a pump or the like may be provided if necessary. Further, the packed bed of the present invention may be always immersed in the water to be treated during ozone treatment in order to adjust the density of the packed bed or the like, or the upper part thereof may not always be partially immersed. The surface of the water to be treated can be adjusted by, for example, setting up a discharge water pipe.
【００１１】本発明に使用される粒状活性炭としては、
通常の新鮮な公知の活性炭、例えば、石炭系、ヤシガラ
炭系等が挙げられるが、ＣＯＤ、色度等の除去処理に使
用した再生用活性炭を使用しても新鮮なものと同様の効
果を挙げることができる。粒状活性炭のサイズとして
は、通常Ｑ 〜Ｑ ｍｍのものが挙げられる。ま
た、本発明の充填層は、所望により粒状活性炭以外のオ
ゾンに対し粒状活性炭と同様の作用を有する他の素材粒
子、例えば、二酸化マンガンの粒状物等を併用してもよ
い。The granular activated carbon used in the present invention includes:
Common fresh known activated carbon, for example, coal-based, coconut husk charcoal-based, etc. can be mentioned, but the same effect as the fresh one can be obtained by using the regenerated activated carbon used for removing COD, chromaticity and the like. be able to. Examples of the size of the granular activated carbon include those of Q 1 to Q mm. Further, if desired, the packed bed of the present invention may be used in combination with other raw material particles having a similar action to the granular activated carbon to ozone other than the granular activated carbon, for example, particles of manganese dioxide.
【００１２】[0012]
【作用】以下、本発明の具体的構成と作用を図１を参照
して具体的に説明する。図１は、本発明の具体的装置の
一例を示す説明図である。本発明のＣＯＤ処理装置１
は、粒状活性炭の充填層２、オゾン散気装置３、該充填
層２を保持し、処理水を透過する孔を有する支持層４、
原水８を該充填層２及びオゾン散気装置が保持されてい
るカラム７に導入するための流入用水管５、該充填層に
て下向流でオゾン処理された処理水１０を放流するため
の放流用水管６から概略構成されている。The specific structure and operation of the present invention will be specifically described below with reference to FIG. FIG. 1 is an explanatory diagram showing an example of a specific device of the present invention. COD processing apparatus 1 of the present invention
Is a packed bed 2 of granular activated carbon, an ozone diffuser 3, a support layer 4 for holding the packed bed 2 and having pores for passing treated water,
An inflow water pipe 5 for introducing raw water 8 into the packed bed 2 and a column 7 in which an ozone diffuser is held, and for discharging treated water 10 treated with ozone in a downward flow in the packed bed. The discharge water pipe 6 is generally configured.
【００１３】原水８は、し尿の生物処理水を更に凝集沈
殿した処理水、下水の活性汚泥処理の終沈越流水等であ
り、下向流による供給ケースを示す。充填層２は、粒状
活性炭１５がカラム７内に充填された層であり、水中に
浸漬されている。その原水水面１４は、放流用水管６に
より調整されている。図１では、水面上部に浸漬されて
いない粒状活性炭層があるが、粒状活性炭層が、完全に
水面下に浸漬させられる場合でもよい。The raw water 8 is treated water obtained by further coagulating and sedimenting biologically treated water of human waste, final settling overflow water of activated sludge treatment of sewage, etc., and shows a case of downward flow. The packed bed 2 is a bed in which the granular activated carbon 15 is packed in the column 7, and is immersed in water. The raw water surface 14 is adjusted by the discharge water pipe 6. In FIG. 1, there is a granular activated carbon layer which is not immersed above the water surface, but the granular activated carbon layer may be completely immersed below the water surface.
【００１４】オゾン散気装置３は、オゾンガス９を充填
層２の下部に散気させる。散気装置３の位置は、図のよ
うに支持層４を介して下方においても、充填層２中に浸
漬しても良い。処理水１０は、原水８中の色度、ＣＯ
Ｄ、ＳＳが高度に除去された清澄水となっている。尚、
この場合は、原水８を下向流にて処理するシステムであ
るが、原水を流入用水管１１を使用し、弁１２及び１３
を開として上向流にて処理することもできる。The ozone diffuser 3 diffuses the ozone gas 9 to the lower part of the packed bed 2. The position of the air diffuser 3 may be immersed in the filling layer 2 either below the support layer 4 as shown in the drawing. Treated water 10 is chromaticity in raw water 8, CO
D and SS are highly removed clear water. still,
In this case, the system treats the raw water 8 in a downward flow, but uses the inflow water pipe 11 to supply the raw water 8 to the valves 12 and 13.
It is also possible to open and to process in an upward flow.
【００１５】このように本発明の最大の特徴は、オゾン
接触槽として粒状活性炭の充填層２を採用し、粒状活性
炭の存在下で原水とオゾンを接触させる点にあり、従来
類例のない技術思想である。例えば、図１の構成により
次のような注目すべき効果が生ずる 粒状活性炭の充填層２が存在しない単なる槽にオゾ
ンを散気して、オゾン処理する場合に比べ、色度、ＣＯ
Ｄ除去率が向上する。As described above, the greatest feature of the present invention is that the packed bed 2 of granular activated carbon is used as the ozone contact tank, and raw water and ozone are brought into contact with each other in the presence of the granular activated carbon. Is. For example, the following remarkable effects are produced by the configuration of FIG. 1. Compared with the case where ozone is diffused into a simple tank in which the packed bed 2 of granular activated carbon does not exist and ozone treatment is performed, chromaticity and CO
The D removal rate is improved.
【００１６】 排気にオゾンがほとんど存在せず、排
オゾンの処理が必要ない。 粒状活性炭として、すでに色度、ＣＯＤの吸着が飽
和に達しているものを使用することができる。 このような効果が発生するメカニズムの詳細は現時点で
は明らかでないが、粒状活性炭の浸漬濾床の存在下で原
水とオゾンを接触させると単に原水とオゾンを接触する
場合とは異なった現象が起きることは実験的に確認した
事実である。There is almost no ozone in the exhaust gas, and it is not necessary to treat the exhaust ozone. As the granular activated carbon, it is possible to use one whose saturation of chromaticity and COD has already reached saturation. The details of the mechanism by which such an effect occurs are not clear at this time, but contacting raw water with ozone in the presence of an immersion filter bed of granular activated carbon causes a phenomenon different from simply contacting raw water with ozone. Is a fact confirmed experimentally.
【００１７】これは、粒状活性炭が存在するとオゾンが
粒状活性炭の表面の触媒作用を受けて、オゾンそれ自体
よりも強力なフリーラジカル、活性酸素種を生成し、こ
のフリーラジカル、活性酸素種が、原水中のＣＯＤと色
度などの難生物分解性有機物を強力に酸化するのではな
いかと考えられる。また、活性炭の表面もオゾン酸化を
受けて、その界面化学的特性が変化することもその要因
と考えられる。This is because when granular activated carbon is present, ozone is subjected to the catalytic action on the surface of the granular activated carbon to generate free radicals and active oxygen species that are stronger than ozone itself, and these free radicals and active oxygen species are It is considered that COD and chromaticity in raw water may strongly oxidize hardly biodegradable organic substances. Further, it is considered that the surface chemical properties of activated carbon are also affected by ozone oxidation and the surface chemical properties thereof are changed.
【００１８】[0018]
【実施例】以下、本発明の具体的実施例を説明するが、
本発明はこれに限定されるものではない。 実施例 し尿の無希釈生物学的硝化脱窒素処理水をＦｅＣｌ3 に
よる凝集沈殿処理後、砂濾過したもの（ＣＯＤ５６ｍｇ
／Ｌ、色度７０度）を本発明の処理対象原水とした。EXAMPLES Hereinafter, specific examples of the present invention will be described.
The present invention is not limited to this. Example Non-diluted biological nitrification and denitrification water of human waste was subjected to coagulation sedimentation treatment with FeCl 3 and then sand filtered (COD 56 mg
/ L, chromaticity 70 degrees) was used as the raw water for treatment of the present invention.
【００１９】実験条件を以下に示す。実験は、上向流で
行った。 実験条件 カラム直径…１０ｃｍ 高さ…１．５ｍ 充填層の粒状活性炭の種類…すでにＣＯＤ、色度が飽和
吸着量に達した粒状活性炭（石炭系）、粒径２〜３ｍｍ 充填層層厚…１．０ｍ カラム上向流通水速度…１２０ｍ／日（空塔基準） オゾン注入率…４００ｍｇ／Ｌ この条件で一ヵ月実験を続けた結果、本発明の処理水の
ＣＯＤは１８ｍｇ／Ｌ、色度は５°以下が安定して得ら
れた。排ガス中のオゾンは１ｍｇ／Ｌ以下であった。The experimental conditions are shown below. The experiment was carried out in the upward flow. Experimental conditions Column diameter… 10 cm Height… 1.5 m Kind of granular activated carbon in packed bed… COD, granular activated carbon whose chromaticity has reached saturated adsorption amount (coal-based), particle size 2-3 mm Packed layer thickness… 1 0.0m Column upward flow rate: 120m / day (empty tower standard) Ozone injection rate: 400mg / L As a result of continuing the experiment for one month under these conditions, the COD of the treated water of the present invention was 18mg / L, and the chromaticity was A value of 5 ° or less was stably obtained. Ozone in the exhaust gas was 1 mg / L or less.
【００２０】比較例 上記実施例の実験条件において、カラム内の粒状活性炭
を除去した以外は、同一の条件で対照実験を実施例と平
行して行った。その結果、処理水のＣＯＤは４３ｍｇ／
Ｌ、色度は１０°であり、本発明に比べＣＯＤ除去率、
色度共に劣っていた。また、排ガス中のオゾンは２０ｍ
ｇ／Ｌ程度であった。Comparative Example Under the experimental conditions of the above-mentioned example, a control experiment was conducted in parallel with the example under the same conditions except that the granular activated carbon in the column was removed. As a result, the COD of the treated water was 43 mg /
L, chromaticity is 10 °, COD removal rate,
The chromaticity was inferior. The ozone in the exhaust gas is 20m
It was about g / L.
【００２１】[0021]
【発明の効果】本発明は以下の効果を奏する。 ＣＯＤ除去率が向上する。 排オゾンの処理の必要がなくなる。 オゾン吸収効率がほぼ１００％に達する。The present invention has the following effects. The COD removal rate is improved. Eliminates the need to treat waste ozone. The ozone absorption efficiency reaches almost 100%.
【図１】本発明の一実施例の具体的構成を説明するため
の図である。FIG. 1 is a diagram for explaining a specific configuration of an embodiment of the present invention.
１ 本発明のＣＯＤ処理装置 ２ 充填層 ３ オゾン散気装置 ４ 支持層 ５ 流入用水管 ６ 放流用水管 ７ カラム ８ 原水 ９ オゾンガス 10 処理水 11 流入用水管 12 弁 13 弁 14 水面 15 粒状活性炭 1 COD treatment apparatus of the present invention 2 Packed bed 3 Ozone diffuser 4 Support bed 5 Inflow water pipe 6 Discharge water pipe 7 Column 8 Raw water 9 Ozone gas 10 Treated water 11 Inflow water pipe 12 Valve 13 Valve 14 Water surface 15 Granular activated carbon
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年６月５日[Submission date] June 5, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１１[Correction target item name] 0011
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１１】本発明に使用される粒状活性炭としては、
通常の新鮮な公知の活性炭、例えば、石炭系、ヤシガラ
炭系等が挙げられるが、ＣＯＤ、色度等の除去処理に使
用した再生用活性炭を使用しても新鮮なものと同様の効
果を挙げることができる。粒状活性炭のサイズとして
は、通常２〜４ｍｍのものが挙げられる。また、本発明
の充填層は、所望により粒状活性炭以外のオゾンに対し
粒状活性炭と同様の作用を有する他の素材粒子、例え
ば、二酸化マンガンの粒状物等を併用してもよい。The granular activated carbon used in the present invention includes:
Common fresh known activated carbon, for example, coal-based, coconut husk charcoal-based, etc. can be mentioned, but the same effect as the fresh one can be obtained by using the regenerated activated carbon used for removing COD, chromaticity and the like. be able to. The size of the granular activated carbon is usually 2 to 4 mm. Further, if desired, the packed bed of the present invention may be used in combination with other raw material particles having a similar action to the granular activated carbon to ozone other than the granular activated carbon, for example, particles of manganese dioxide.
Claims (2)
が、液中に浸漬して設けられ、該充填層の下部よりオゾ
ンガスを直接散気しつつ、処理対象水を供給し、該充填
層を通過させることを特徴とするオゾンを用いたＣＯＤ
処理方法。1. A packed bed of granular activated carbon is provided by immersing at least a part thereof in a liquid, and water to be treated is supplied to the packed bed while directly diffusing ozone gas from the lower part of the packed bed. COD using ozone characterized by passing through
Processing method.
活性炭の充填層と、該充填層の下方に設けられたオゾン
散気装置と、上向流又は下向流で処理対象水が該充填層
を通過するよう設けられた流入・放流用水管を設けてな
るオゾンを用いたＣＯＤ処理装置。2. A packed bed of granular activated carbon at least a part of which is immersed in a liquid, an ozone diffuser provided below the packed bed, and water to be treated in an upward flow or a downward flow. A COD treatment apparatus using ozone, which is provided with an inflow / outflow water pipe provided so as to pass through a packed bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23810991A JPH0568983A (en) | 1991-09-18 | 1991-09-18 | Cod treatment method and apparatus using ozone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23810991A JPH0568983A (en) | 1991-09-18 | 1991-09-18 | Cod treatment method and apparatus using ozone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0568983A true JPH0568983A (en) | 1993-03-23 |
Family
ID=17025313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23810991A Pending JPH0568983A (en) | 1991-09-18 | 1991-09-18 | Cod treatment method and apparatus using ozone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0568983A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2265728A1 (en) * | 2004-09-10 | 2007-02-16 | Universidad De Granada | Water organic micro contaminants e.g. ozone based removal apparatus includes an ozonator and an active carbon container enhancing the high toxicity contaminants removal |
| JP2010022960A (en) * | 2008-07-22 | 2010-02-04 | Sharp Corp | Water treatment apparatus and water treatment method for organofluorine compound-containing water |
| JP2014091067A (en) * | 2012-11-01 | 2014-05-19 | Mitsubishi Heavy Ind Ltd | Water purifier |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63123493A (en) * | 1986-11-11 | 1988-05-27 | Shimizu Constr Co Ltd | Purifying method for water and apparatus therefor |
-
1991
- 1991-09-18 JP JP23810991A patent/JPH0568983A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63123493A (en) * | 1986-11-11 | 1988-05-27 | Shimizu Constr Co Ltd | Purifying method for water and apparatus therefor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2265728A1 (en) * | 2004-09-10 | 2007-02-16 | Universidad De Granada | Water organic micro contaminants e.g. ozone based removal apparatus includes an ozonator and an active carbon container enhancing the high toxicity contaminants removal |
| JP2010022960A (en) * | 2008-07-22 | 2010-02-04 | Sharp Corp | Water treatment apparatus and water treatment method for organofluorine compound-containing water |
| JP2014091067A (en) * | 2012-11-01 | 2014-05-19 | Mitsubishi Heavy Ind Ltd | Water purifier |
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