JPH04180888A - Ozone contact apparatus - Google Patents
Ozone contact apparatusInfo
- Publication number
- JPH04180888A JPH04180888A JP30629290A JP30629290A JPH04180888A JP H04180888 A JPH04180888 A JP H04180888A JP 30629290 A JP30629290 A JP 30629290A JP 30629290 A JP30629290 A JP 30629290A JP H04180888 A JPH04180888 A JP H04180888A
- Authority
- JP
- Japan
- Prior art keywords
- water
- ozone
- treated
- packed bed
- ozone gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- 238000004891 communication Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 230000000630 rising effect Effects 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 238000009835 boiling Methods 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
- 239000012792 core layer Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明はオゾンで被処理水を除臭、殺菌処理する際に
、被処理水のオゾン吸収効率を向上するようにしたオゾ
ン接触装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an ozone contacting device that improves the ozone absorption efficiency of treated water when the treated water is deodorized and sterilized with ozone.
〈従来の技術〉
接触槽内に下部からオゾンガスな通気すると共に、上部
から被処理水を散水装置で散水して下向流で通水するオ
ゾン接触装置は従来から公知である。<Prior Art> An ozone contacting apparatus is conventionally known in which ozone gas is vented into a contact tank from the lower part, and water to be treated is sprinkled from the upper part with a sprinkler to flow the water downward.
〈発明が解決しようとする課題〉
上記のような気泡塔式オゾン接触装置では被処理水の混
合状態が完全混合に近いためオゾン吸収効率は80〜9
0%であって低い。<Problem to be solved by the invention> In the bubble column type ozone contact device as described above, the mixing state of the water to be treated is close to complete mixing, so the ozone absorption efficiency is 80 to 9.
0%, which is low.
そこで従来はオゾン接触槽を多段に分割したり、未反応
オゾン(排オゾンガス)を回収して再度、液と向流接触
させる等の対策を講じ、オゾン吸収率を高めているが、
そのようにすると装置が複雑化し、設置コストが著しく
嵩む。Conventionally, measures have been taken to increase the ozone absorption rate, such as dividing the ozone contact tank into multiple stages and recovering unreacted ozone (exhaust ozone gas) and bringing it into countercurrent contact with the liquid again.
Doing so would complicate the device and significantly increase installation costs.
又、特公昭54−24216号公報により充填塔式オゾ
ン接触装置も公知であるが、オゾンの吸収効率は気泡塔
式より悪い上に、河川水等の浄化処理には処理工程でポ
ンプ動力を用いない高低差(落差)移水であることから
適用不向きとされている。In addition, a packed column type ozone contact device is also known from Japanese Patent Publication No. 54-24216, but its ozone absorption efficiency is lower than that of the bubble column type, and pump power is not used in the treatment process to purify river water. It is considered unsuitable for application because it involves water transfer due to a small height difference (head).
〈課題を解決するための手段〉
そこで本発明は装置を複雑化することなく、また落差水
流を利用して被処理水のオゾン吸収効率を高めることを
目的に開発したのであって、接触槽内の散水装置の下方
で、且つ水面より上方の位置に充填層を設けたことを特
徴とする。<Means for Solving the Problems> Therefore, the present invention was developed for the purpose of increasing the ozone absorption efficiency of the water to be treated without complicating the equipment and by utilizing the head water flow. A filling layer is provided below the water sprinkler and above the water surface.
く実 施 例〉
図示の各実施例において、1は接触槽で、被処理水は槽
内上部に設けた分配器2から一様に散水され、はf均等
に槽内を下向流する。又、槽内底部には散気法3を取付
けたヘッダー4が設けてあり、オゾンガスは給気管5に
よりヘッダー4に供給され、散気法3・・・から槽内を
一様に上向流し、頂壁の放出口6から放出される。接触
槽1に隣接して同高の反応槽7を縦割壁8で劃して設け
、縦割壁8の底部には両槽1,7を連通する連絡口9、
反応槽7の上部には水の溢出口10が設けである。Embodiments In each of the illustrated embodiments, reference numeral 1 denotes a contact tank, and the water to be treated is uniformly sprinkled from a distributor 2 provided at the upper part of the tank, and flows evenly downward in the tank. In addition, a header 4 with an aeration method 3 attached is provided at the bottom of the tank, and ozone gas is supplied to the header 4 through an air supply pipe 5 and uniformly flows upward in the tank from the aeration method 3. , is discharged from the discharge port 6 on the top wall. A reaction tank 7 of the same height is provided adjacent to the contact tank 1 and separated by a vertically divided wall 8, and a communication port 9 is provided at the bottom of the vertically divided wall 8 to communicate both tanks 1 and 7.
A water overflow port 10 is provided at the top of the reaction tank 7.
従って、接触槽1内を下向流し、オゾンガスと向流接触
してこれを吸収し、処理水となった水は、連絡口9から
反応槽7の底部に入り、該槽7内を上向流して溢出口1
0から排水される。これによって、接触槽1内の被処理
水の水面Wは反応槽の溢出口10になる。Therefore, the water that flows downward in the contact tank 1, comes into countercurrent contact with ozone gas and absorbs it, and becomes treated water enters the bottom of the reaction tank 7 from the communication port 9 and flows upward in the tank 7. Flow overflow outlet 1
Drained from 0. As a result, the water surface W of the water to be treated in the contact tank 1 becomes the overflow port 10 of the reaction tank.
接触槽1内にはこの水面W上で、且つ分配器2の下に充
填層11を設ける。充填層11の一部を水面下に水没し
て設けると、オゾンガスの気泡は会合により径が大きく
なり、ガス表面積が小さくなるので水没部分の充填層の
効果は失われ、その分吸収効率は低下するので好ましく
ないが、水面より上の充填層は吸収効率を高めることが
できる。充填層11は多孔支持板12上に充填した充填
材で構成する。A packed layer 11 is provided in the contact tank 1 above the water surface W and below the distributor 2. If a part of the packed bed 11 is provided submerged under the water surface, the diameter of the ozone gas bubbles increases due to association, and the gas surface area becomes smaller, so the effect of the filled bed in the submerged part is lost, and the absorption efficiency decreases accordingly. Although undesirable because of this, a packed bed above the water level can increase absorption efficiency. The filling layer 11 is composed of a filling material filled on a porous support plate 12.
充填材は塩化ビニール、テフロン、ステンレス、ポリプ
ロピレン、磁性物、砂、アンスラサイトなどの破砕物、
加工物などなんでもよいが、オゾンによって品質が変化
しないものであることが好ましい。又、その形状は球形
、円柱形、円筒形、不定形等なんでもよいが、水やガス
の流れに対して抵抗の少ない10〜200mm、好まし
くは20〜100mm位の大きさが良い。充填層の層高
は200〜5000mm位あればよいが、許容される水
落差や、充填層内での水の流れの均一化などから300
〜1000mmが望ましい。Filling materials include crushed materials such as vinyl chloride, Teflon, stainless steel, polypropylene, magnetic materials, sand, and anthracite.
Any processed material may be used, but it is preferable that the quality is not changed by ozone. Further, the shape may be any shape such as spherical, cylindrical, cylindrical, irregular, etc., but the size is preferably about 10 to 200 mm, preferably about 20 to 100 mm, so that there is little resistance to the flow of water or gas. The bed height of the packed bed should be about 200 to 5000 mm, but it should be 300 mm due to the allowable water head difference and uniformity of water flow within the packed bed.
~1000mm is desirable.
前述した反応槽7の溢出口10は、上記充填層の高さに
応じ、核層が水面W上にあるよう、充填層下面よりも低
い位置に設けるのである。The above-mentioned overflow port 10 of the reaction tank 7 is provided at a position lower than the lower surface of the packed bed so that the core layer is above the water surface W, depending on the height of the packed bed.
これによって分配器2から散水された被処理水は、充填
層11中を流下する際に該層中な上昇するオゾンガスと
接触してこれを吸収し、その後、水面下を下向流する際
に前述したようにオゾンと向流接触して更にオゾンを吸
収する。こうしてオゾンを吸収した処理水は連絡口9か
も反応槽8に入って槽内を上向流し、溢出口10から排
水される。この反応槽は残溜溶存オゾンの反応用のもの
で、溶存しているオゾンが酸化反応に供され、消滅する
のに充分な滞溜時間を与える。As a result, the water to be treated that is sprinkled from the distributor 2 comes into contact with and absorbs the rising ozone gas in the packed bed 11 when flowing down, and then, when flowing downward under the water surface. As mentioned above, it comes into countercurrent contact with ozone and further absorbs ozone. The treated water that has absorbed ozone in this way enters the reaction tank 8 through the communication port 9, flows upward in the tank, and is drained from the overflow port 10. This reaction vessel is for the reaction of residual dissolved ozone and provides sufficient residence time for the dissolved ozone to undergo an oxidation reaction and disappear.
被処理水と処理水との落差がある場合は、第1図の実施
例でよいが、落差がない場合は第2図の実施例のように
被処理水の一部を接触槽の水面上に供給し、被処理水の
残部はポンプ13で充填層11の上方から散水すればよ
い。この場合は充填層の層高を1000〜5000mm
に高(する、又、ポンプ13で充填層11に上から散水
する被処理水の水量は、被処理水全体の水量の25〜2
5%程度がよい。If there is a head difference between the water to be treated and the treated water, the embodiment shown in Figure 1 will suffice, but if there is no head difference, a part of the water to be treated will be placed above the water surface of the contact tank as in the embodiment shown in Figure 2. The remainder of the water to be treated may be sprayed from above the packed bed 11 using the pump 13. In this case, the height of the packed bed should be 1000 to 5000 mm.
In addition, the amount of water to be treated that is sprayed from above onto the packed bed 11 by the pump 13 is 25 to 2 times the amount of the entire water to be treated.
About 5% is good.
そして、第1図、第2図、いずれの実施例でも、接触槽
1の水中を、上下方向に開放した格子体やハニカム簡の
集積体で多数の小区劃に仕切り、散気法3を各小区劃の
中心下方に配置することにより下向流する被処理水を栓
流にし、オゾンの吸収効率を更に向上することができる
。In both the embodiments shown in FIGS. 1 and 2, the water in the contact tank 1 is partitioned into a large number of small sections using a vertically open lattice structure or an accumulation of honeycomb strips, and the aeration method 3 is applied to each section. By arranging it below the center of the small plot, the water to be treated flowing downward can be turned into a plug flow, further improving the ozone absorption efficiency.
−辺が2mの正方形で、高さ6mの接触槽内に高さ6m
の位置から被処理水を散水して被処理水の水深を4mに
保つようにし、直径25mmのラッシヒリングを槽内の
下から4mと5mの間の空間に充填して充填層としたオ
ゾン接触装置(実施例)と、同じ接触槽で被処理水の水
深を5mに保ち、充填層は設けないオゾン接触装置(比
較例)とによりオゾンガスの吸収率を測定した所、下表
の結果が得られた。- A square with sides of 2m and a height of 6m in a contact tank with a height of 6m.
The water to be treated is sprinkled from the position to maintain the depth of the water to be treated at 4 m, and a Raschig ring with a diameter of 25 mm is filled in the space between 4 m and 5 m from the bottom of the tank to form a packed bed. (Example) and an ozone contact device (Comparative Example) in which the depth of the water to be treated was kept at 5 m in the same contact tank and no packed bed was installed, and the results shown in the table below were obtained. Ta.
尚、被処理水は河川の凝集沈殿処理水を使用し、オゾン
ガス濃度20 m g / 12、オゾン注入率3 m
g / 12、接触槽内での被処理水の沸溜時間10
分、水温30℃であった。The water to be treated is river coagulation and sedimentation treated water, with an ozone gas concentration of 20 mg/12 and an ozone injection rate of 3 m
g / 12, boiling time of the water to be treated in the contact tank 10
minute, the water temperature was 30°C.
〈発明の効果〉
本発明によればオゾンガスの吸収効率が高まるため、無
駄が少なくなり、コストの低減が図れる。又、排オゾン
量が少なくなり、その処理費が低減する。<Effects of the Invention> According to the present invention, since the absorption efficiency of ozone gas is increased, waste is reduced and costs can be reduced. Moreover, the amount of ozone discharged is reduced, and the processing cost is reduced.
更に、オゾンガスの吸収効率が被処理水の水質変動に対
して安定するので、排オゾンガス中のオゾン濃度が安定
し、その結果、排オゾン処理の安定運転が可能になる。Furthermore, since the absorption efficiency of ozone gas is stabilized against fluctuations in the quality of the water to be treated, the ozone concentration in the exhaust ozone gas is stabilized, and as a result, stable operation of exhaust ozone treatment becomes possible.
第1図、第2図は夫々本発明のオゾン接触装置の実施例
を示す断面図である。
図中、1は接触槽、2は被処理水を散水する分配器、3
はオゾンガスの散気法、4はヘッダー、5は給気管、6
は排オゾンガスの放出口、7は反応槽、8は縦側壁、9
は連絡口、10は処理水の溢出口、11は充填層、12
は多孔支持板を示す。
出願人 栗田工業 株式会社出願人
宗像地区水道企業口
−つ゛FIGS. 1 and 2 are cross-sectional views showing embodiments of the ozone contact device of the present invention. In the figure, 1 is a contact tank, 2 is a distributor that sprinkles the water to be treated, and 3
is the ozone gas diffusion method, 4 is the header, 5 is the air supply pipe, 6
is a discharge port for exhaust ozone gas, 7 is a reaction tank, 8 is a vertical side wall, 9
is a communication port, 10 is a treated water overflow port, 11 is a packed bed, 12
indicates a porous support plate. Applicant Kurita Kogyo Co., Ltd. Applicant
Munakata District Water Supply Enterprise Exit
Claims (1)
から被処理水を散水装置で散水して下向流で通水するオ
ゾン接触装置において、 上記接触槽内の散水装置の下方で、且つ水面より上方の
位置に充填層を設けたことを特徴とするオゾン接触装置
。[Scope of Claims] An ozone contact device in which ozone gas is aerated into the contact tank from the lower part, and water to be treated is sprinkled from the upper part with a water sprinkler to pass the water in a downward flow. An ozone contact device characterized in that a packed layer is provided below and above the water surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2306292A JPH0694035B2 (en) | 1990-11-14 | 1990-11-14 | Ozone contactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2306292A JPH0694035B2 (en) | 1990-11-14 | 1990-11-14 | Ozone contactor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04180888A true JPH04180888A (en) | 1992-06-29 |
JPH0694035B2 JPH0694035B2 (en) | 1994-11-24 |
Family
ID=17955342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2306292A Expired - Lifetime JPH0694035B2 (en) | 1990-11-14 | 1990-11-14 | Ozone contactor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0694035B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104909504A (en) * | 2015-06-16 | 2015-09-16 | 北京纬纶华业环保科技股份有限公司 | High-salt high-COD wastewater treatment system and method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS491479A (en) * | 1972-03-08 | 1974-01-08 | ||
JPH03143594A (en) * | 1989-10-27 | 1991-06-19 | Toshiba Corp | Water treatment |
-
1990
- 1990-11-14 JP JP2306292A patent/JPH0694035B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS491479A (en) * | 1972-03-08 | 1974-01-08 | ||
JPH03143594A (en) * | 1989-10-27 | 1991-06-19 | Toshiba Corp | Water treatment |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104909504A (en) * | 2015-06-16 | 2015-09-16 | 北京纬纶华业环保科技股份有限公司 | High-salt high-COD wastewater treatment system and method |
Also Published As
Publication number | Publication date |
---|---|
JPH0694035B2 (en) | 1994-11-24 |
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