JPH0686992A - Method of exterminating algae using ozone - Google Patents
Method of exterminating algae using ozoneInfo
- Publication number
- JPH0686992A JPH0686992A JP29758391A JP29758391A JPH0686992A JP H0686992 A JPH0686992 A JP H0686992A JP 29758391 A JP29758391 A JP 29758391A JP 29758391 A JP29758391 A JP 29758391A JP H0686992 A JPH0686992 A JP H0686992A
- Authority
- JP
- Japan
- Prior art keywords
- ozone
- water
- algae
- value
- adjusting
- 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 38
- 241000195493 Cryptophyta Species 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 241000192710 Microcystis aeruginosa Species 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000000126 substance Substances 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000002353 algacidal effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 241000192700 Cyanobacteria Species 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、オゾンを用いてアオコ
を殺藻する方法に関する。FIELD OF THE INVENTION The present invention relates to a method for algae killing water-bloom using ozone.
【０００２】[0002]
【従来の技術】従来、オゾンを用いてアオコを殺藻する
には、被殺藻水を反応塔に供給し、その反応塔にオゾン
を注入する方法が取られている。2. Description of the Related Art Conventionally, in order to kill algal blooms using ozone, a method of supplying algae-killed water to a reaction tower and injecting ozone into the reaction tower has been adopted.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、アオコ
は窒素、燐等の栄養塩類濃度、光の照射量、水温等の周
囲環境により増殖速度が変化するため、上述した従来の
オゾンによる殺藻方法により常に十分な殺藻効果を得る
ためには、アオコの増殖量以上に殺藻するための大量の
オゾンを必要とする欠点がある。However, since the growth rate of blue-green alga varies depending on the surrounding environment such as the concentration of nutrients such as nitrogen and phosphorus, the irradiation amount of light, the water temperature, etc., the conventional ozone-killing method using ozone described above is used. In order to obtain a sufficient algicidal effect at all times, there is a drawback that a large amount of ozone for algicidal is required in excess of the growth amount of water-bloom.
【０００４】そこで本発明は、オゾンを用いてアオコを
殺藻する方法において、殺藻効率を高めたものである。[0004] Therefore, the present invention is a method for algae killing blue-green algae by using ozone, in which the algae killing efficiency is enhanced.
【０００５】[0005]
【課題を解決するための手段】本発明においては、アオ
コを含む被殺藻水のｐＨ値を５．８以上６．３以下の範
囲に調整し、次いでオゾンを注入することにより殺藻を
行う。In the present invention, algae is killed by adjusting the pH value of the algae-containing water containing water-bloom to a range of 5.8 to 6.3 and then injecting ozone. .
【０００６】[0006]
【作用】実験によればアオコの生息する水のｐＨ値を低
下させることにより、アオコの比増殖速度は窒素、燐等
の栄養塩類濃度、光の照射量、、水温等の周囲環境に関
わらず低下する。図２に水のｐＨ値に対するアオコの比
増殖速度を示す。According to the experiment, by decreasing the pH value of the water in which water-blooms inhabit, the specific growth rate of water-blooms is irrespective of the concentration of nutrients such as nitrogen and phosphorus, the amount of light irradiation, and the surrounding environment such as water temperature. descend. FIG. 2 shows the specific growth rate of water-bloom against the pH value of water.
【０００７】一方親水、修景用水および排水のｐＨ値
は、経皮的接触上の安全性により、５．８以上８．６以
下の範囲が適当であるとされている。また水性生物の生
育に対しても、上記範囲のｐＨ値が適当であるとされて
いる。On the other hand, it is said that the pH value of hydrophilic water, scenic water and drainage water is appropriately in the range of 5.8 or more and 8.6 or less in view of safety on percutaneous contact. It is also said that the pH value in the above range is suitable for the growth of aquatic organisms.
【０００８】そこで本発明においては、被殺藻水のｐＨ
値を５．８以上６．３以下の範囲に設定するものとす
る。Therefore, in the present invention, the pH of the algae water to be killed
The value shall be set in the range of 5.8 or more and 6.3 or less.
【０００９】上記の方法をとる本発明のオゾンによるア
オコの殺藻方法においては、被殺藻水のｐＨ値を５．８
以上６．３以下の範囲に調整することにより、窒素、燐
等の栄養塩類濃度、光の照射量、水温等の周囲環境の影
響を受けることなく藻類の増殖速度を低下させた状態に
保つことができるため、オゾンによる殺藻効率を高める
ことができる。In the method for algae killing water-bloom using ozone according to the present invention, which employs the above method, the pH value of the algae-killed water is 5.8.
Keeping the growth rate of algae lower without being affected by the surrounding environment such as the concentration of nutrients such as nitrogen and phosphorus, the irradiation amount of light, the water temperature, etc. by adjusting the range to 6.3 or less. Therefore, the efficiency of algae killing by ozone can be increased.
【００１０】[0010]
【実施例】図１は本発明の方法を実施する装置の一例
で、ｐＨ調整部１０、オゾン反応部２０を設ける。ｐＨ
調整部１０はｐＨ調整槽１１、ｐＨ電極１２、ｐＨコン
トローラー１３、薬液注入ポンプ１４、ｐＨ調整用薬液
タンク１５より構成する。また、オゾン反応部２０はオ
ゾン発生器用電源２１、オゾン発生器２２及びオゾン反
応塔２３により構成する。1 is an example of an apparatus for carrying out the method of the present invention, in which a pH adjusting section 10 and an ozone reaction section 20 are provided. pH
The adjusting unit 10 includes a pH adjusting tank 11, a pH electrode 12, a pH controller 13, a chemical injection pump 14, and a pH adjusting chemical tank 15. The ozone reaction section 20 is composed of an ozone generator power source 21, an ozone generator 22, and an ozone reaction tower 23.
【００１１】ｐＨ調整部１０では、ｐＨ調整槽１１に貯
溜される水のｐＨ値をｐＨ電極１２により常時測定す
る。ｐＨコントローラー１３はｐＨ設定値を５．８以上
６．３以下の範囲とし、ｐＨ電極１２により示されるｐ
Ｈ値が５．８以上６．３以下の範囲になるように、薬液
注入ポンプ１４を駆動させ、ｐＨ調整用薬液タンク１５
よりｐＨ調整槽１１にｐＨ調整用の薬液を注入する。In the pH adjusting unit 10, the pH value of the water stored in the pH adjusting tank 11 is constantly measured by the pH electrode 12. The pH controller 13 sets the pH set value in the range of 5.8 or more and 6.3 or less, and the p value indicated by the pH electrode 12 is set.
The chemical liquid injection pump 14 is driven so that the H value is in the range of 5.8 or more and 6.3 or less, and the pH adjusting chemical liquid tank 15
A pH adjusting chemical solution is further injected into the pH adjusting tank 11.
【００１２】また、オゾン反応部２０では、空気２４を
オゾン発生器２２へ供給し、オゾン発生器用電源２１を
起動させ、空気２４を原料としてオゾンガスを生成す
る。このオゾンガスはオゾン反応塔２３へ送られ、オゾ
ン反応塔２３に供給される水と反応する。ここで未反応
のオゾンガスは、残留オゾン分解槽２５に通し、オゾン
を分解した後に排気する。Further, in the ozone reaction section 20, the air 24 is supplied to the ozone generator 22, the ozone generator power source 21 is activated, and ozone gas is generated using the air 24 as a raw material. This ozone gas is sent to the ozone reaction tower 23 and reacts with the water supplied to the ozone reaction tower 23. Here, the unreacted ozone gas is passed through the residual ozone decomposing tank 25 to decompose the ozone and then exhausted.
【００１３】以上の装置によりアオコを殺藻するには、
まずアオコを含む被殺藻水３１をｐＨ調整槽１１に供給
し、前述したｐＨ調整部１０の作用により被殺藻水３１
のｐＨ値を５．８以上６．３以下の範囲に調整する。[0013] To kill algae with the above device,
First, the algae-killed water 31 containing water-bloom is supplied to the pH adjusting tank 11, and the alga-killed water 31 is supplied by the action of the pH adjusting unit 10 described above.
PH value is adjusted within the range of 5.8 or more and 6.3 or less.
【００１４】次にｐＨ値を調整したｐＨ調整水３２を、
ポンプ４１によりオゾン反応塔２３に送液し、前述した
オゾン反応部２０の作用によりｐＨ調整水３２にオゾン
を注入し、アオコの殺藻を行う。Next, the pH-adjusted water 32 whose pH value has been adjusted,
The liquid is sent to the ozone reaction tower 23 by the pump 41, and ozone is injected into the pH-adjusted water 32 by the action of the ozone reaction unit 20 described above to kill the algae.
【００１５】また、オゾン反応塔２３において殺藻され
た水は、ポンプ４２により処理水として例えば親水池や
修景池に供給したり、河川に放流したりする。Further, the water killed by the algae in the ozone reaction tower 23 is supplied as treated water by the pump 42 to, for example, a hydrophilic pond or a scenic pond, or is discharged to a river.
【００１６】[0016]
【発明の効果】上述した本発明の方法によれば、被殺藻
水のｐＨ値を５．８以上６．３以下の範囲に調整するこ
とにより、窒素、燐等の栄養塩類濃度、光の照射量、水
温等の周囲環境に影響を受けることなく藻類の増殖速度
を低下させた状態でオゾンを注入するので、オゾンによ
る殺藻効率を高めることができる。According to the method of the present invention described above, by adjusting the pH value of the algae-killed water in the range of 5.8 or more and 6.3 or less, the concentration of nutrients such as nitrogen and phosphorus, and the light Since ozone is injected in a state where the growth rate of algae is reduced without being affected by the surrounding environment such as the irradiation amount and the water temperature, the efficiency of algae killing by ozone can be increased.
【図１】本発明の方法を実施する装置の一例を示す図で
ある。FIG. 1 is a diagram showing an example of an apparatus for carrying out the method of the present invention.
【図２】ｐＨ値に対するアオコの比増殖速度を示すグラ
フである。FIG. 2 is a graph showing the specific growth rate of water-bloom with respect to pH value.
１０ ｐＨ調整部 ２０ オゾン反応部 整理番号 ＰＧＥＣ９１−００２ 10 pH adjuster 20 Ozone reaction part Reference number PGEC91-002
【図１】[Figure 1]
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年８月３０日[Submission date] August 30, 1993
【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】符号の説明[Correction target item name] Explanation of code
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【符号の説明】 １０ ｐＨ調整部 ２０ オゾン反応部[Explanation of reference symbols] 10 pH adjusting unit 20 Ozone reaction unit
Claims (1)
上６．３以下の範囲に調整し、次いでオゾン注入するオ
ゾンによるアオコの殺藻方法。1. A method for algae killing water-bloom using ozone, which comprises adjusting the pH value of algae-containing water containing water-bloom to a range of 5.8 to 6.3 and then injecting ozone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29758391A JPH0686992A (en) | 1991-10-18 | 1991-10-18 | Method of exterminating algae using ozone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29758391A JPH0686992A (en) | 1991-10-18 | 1991-10-18 | Method of exterminating algae using ozone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0686992A true JPH0686992A (en) | 1994-03-29 |
Family
ID=17848436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29758391A Pending JPH0686992A (en) | 1991-10-18 | 1991-10-18 | Method of exterminating algae using ozone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0686992A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5200834A (en) * | 1988-03-30 | 1993-04-06 | Nec Home Electronics Ltd. | Magnetic recording and reproducing apparatus obtaining separate clock signals from brightness and color components of a video signal |
-
1991
- 1991-10-18 JP JP29758391A patent/JPH0686992A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5200834A (en) * | 1988-03-30 | 1993-04-06 | Nec Home Electronics Ltd. | Magnetic recording and reproducing apparatus obtaining separate clock signals from brightness and color components of a video signal |
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