JPS6356833B2 - - Google Patents
Info
- Publication number
- JPS6356833B2 JPS6356833B2 JP59100641A JP10064184A JPS6356833B2 JP S6356833 B2 JPS6356833 B2 JP S6356833B2 JP 59100641 A JP59100641 A JP 59100641A JP 10064184 A JP10064184 A JP 10064184A JP S6356833 B2 JPS6356833 B2 JP S6356833B2
- Authority
- JP
- Japan
- Prior art keywords
- red tide
- water
- filter
- plankton
- magnetic filter
- 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.)
- Expired
Links
- 230000005291 magnetic effect Effects 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 230000005294 ferromagnetic effect Effects 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 22
- 239000010419 fine particle Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000005188 flotation Methods 0.000 description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000011268 mixed slurry Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- 229910018626 Al(OH) Inorganic materials 0.000 description 1
- 229920000715 Mucilage Polymers 0.000 description 1
- 241000206733 Skeletonema Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 231100000676 disease causative agent Toxicity 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
本発明は赤潮の処理方法に関し、特に公害上問
題となる赤潮を消滅させると同時に、赤潮の原因
物質である赤潮プランクトンを回収する方法を提
供せんとするものである。
赤潮状の原水から赤潮プランクトンを分離除去
する方法としては、(A)一且、赤潮状の原水を取水
して、これを(1)凝集沈澱法又は(2)加圧浮上法で処
理する方法、及び(B)直接赤潮状の原水に粘土や鉄
粉などを投入散布して赤潮プランクトンを沈降さ
せる方法が考えられる。
しかしながら、(1)の凝集沈澱法では、沈降速度
がせいぜい１〜２ｍ／時であり莫大な面積を必要
とするばかりでなく、処理プロセスを例えば船上
に設置するような場合、自由水面が大きいので動
揺の影響を受け性能が不安定となる欠点があり、
(2)の加圧浮上法では、浮上速度が約10〜15ｍ／時
で、凝集沈降法よりは改善されるというものゝ、
処理設備を船上に置くと動揺の影響を受け、コロ
イドエアの生成が不安定となり加圧浮上そのもの
が無理を生じるばかりでなく、陸上に設置した場
合においても必ずしも満足すべき赤潮プランクト
ンの回収率が得られないという欠点がある。また
(3)の直接赤潮状の原水への投入散布法も、プラン
クトンは除去されずに水域に残つているので、沈
降後に腐敗し水域を再汚染するので根本的な解決
法とは云い難く、しかも腐敗後の再汚染が早く、
公害の繰返しが急速に起り、むしろ反社会的な方
法と云つて過言ではない。
そこで本発明者らは、上述したような欠点のな
い赤潮状の原水から赤潮プランクトンの除去法に
つき鋭意研究の結果、(a)赤潮プランクトンの表面
は屈曲に富み、また粘質物の膜で覆われているも
のが多い、(b)多数の赤潮プランクトンは地磁気に
感応する性質があり強磁性体微粒子とのなじみ具
合がよく、かつ強い磁場での感応がよい、という
事実を確認し、赤潮状の原水に強磁性体微粒子を
混合すれば同微粒子が赤潮プランクトンに容易に
付着し、これを磁場で強磁性体微粒子と共に捕捉
すれば赤潮プランクトンの効果的な分離が行なえ
るのではないかという知見を得、多くの実験によ
りその効果を確認し、本発明を完成するに到つ
た。
すなわち、本発明は赤潮状の原水から赤潮プラ
ンクトンを分離回収する方法において、赤潮状の
原水を取水し、これに強磁性体微粒子を添加後１
分撹拌の上、磁気フイルターに通水し、磁気フイ
ルターのフイルターメデイア部で強磁性体微粒子
と共に赤潮プランクトンを濃縮状態で捕捉分離
し、さらに強磁性体微粒子と赤潮プランクトンを
分離して強磁性体を再利用することを特徴とする
赤潮の処理方法を要旨とするものである。
本発明は、赤潮回収船上で適用することもで
き、一般に上水（飲料水）処理における赤潮プラ
ンクトン混入トラブル対策、海水、潮沼水を工業
用水又は工業原料とする場合の赤潮プランクトン
混入トラブル対策に有利に適用することができ
る。
本発明の構成について詳述する前に、先ず本発
明でいう赤潮及び赤潮プランクトンの定義を表１
に示す。
The present invention relates to a method for treating red tide, and particularly aims to provide a method for eliminating red tide, which poses a pollution problem, and at the same time collecting red tide plankton, which is a causative agent of red tide. Methods for separating and removing red tide plankton from red tide raw water include (A) a method of taking red tide raw water and treating it with (1) coagulation sedimentation method or (2) pressure flotation method; , and (B) methods of directly spraying clay, iron powder, etc. into red tide-like raw water to cause red tide plankton to settle are considered. However, in the coagulation sedimentation method (1), the sedimentation speed is at most 1 to 2 m/hour, which not only requires a huge area, but also requires a large free water surface when the treatment process is installed on a ship, for example. The disadvantage is that the performance is unstable due to the influence of vibration.
In the pressure flotation method (2), the flotation speed is approximately 10 to 15 m/hour, which is better than the coagulation sedimentation method.
If the processing equipment is placed on a ship, it will be affected by the turbulence, making the production of colloid air unstable and making pressurized flotation itself difficult.Also, even if it is installed on land, the recovery rate of red tide plankton will not necessarily be satisfactory. The disadvantage is that it cannot be obtained. Also
The direct injection method (3) into raw water in the form of red tide is also difficult to call a fundamental solution, as the plankton remains in the water area without being removed, and after settling, it rots and re-contaminates the water area. Recontamination after decomposition is rapid,
It is no exaggeration to say that this method is rather anti-social as repeated pollution is occurring rapidly. Therefore, the present inventors conducted extensive research on a method for removing red tide plankton from red tide raw water that does not have the above-mentioned drawbacks, and found that (a) the surface of red tide plankton is highly curved and covered with a film of mucilage. (b) We confirmed the fact that many red tide plankton are sensitive to geomagnetism, have good compatibility with ferromagnetic particles, and are sensitive to strong magnetic fields. We discovered that if ferromagnetic particles are mixed with raw water, the particles will easily adhere to red tide plankton, and if these particles are captured together with ferromagnetic particles in a magnetic field, red tide plankton can be effectively separated. The present invention was completed after confirming the effect through many experiments. That is, the present invention is a method for separating and collecting red tide plankton from red tide raw water, in which red tide raw water is taken, ferromagnetic fine particles are added thereto, and then 1
After stirring for several minutes, water is passed through a magnetic filter, and red tide plankton is captured and separated in a concentrated state along with ferromagnetic particles in the filter media of the magnetic filter, and the ferromagnetic particles and red tide plankton are further separated to produce ferromagnetic substances. The gist of this paper is a red tide treatment method that is characterized by its reuse. The present invention can also be applied onboard a red tide recovery ship, and generally as a countermeasure against the problem of red tide plankton contamination in drinking water treatment, and as a countermeasure against the problem of red tide plankton contamination when seawater or tidal marsh water is used as industrial water or industrial raw material. It can be applied advantageously. Before describing the structure of the present invention in detail, first, the definitions of red tide and red tide plankton as used in the present invention are shown in Table 1.
Shown below.
【表】
第１図に示したフローに従つて本発明の実施例
を示す。１は赤潮発生水域、２は赤潮海水の取水
ライン、３はゴミ除去を兼ねる取水装置、４は反
応槽、５は強磁性体微粒子を含む水の貯槽、６は
強磁性体微粒子を反応槽４に送るライン、７は第
一磁気フイルター、８は赤潮プランクトンと強磁
性体微粒子の混合スラリーの回収槽、９は処理水
の放流ライン、１０は必要に応じて設けられる無
機凝集剤注入設備、１１は高分子系凝集剤注入設
備で、これも必要に応じて設けられるものであ
る。１２は第二磁気フイルターで赤潮プランクト
ンと強磁性体微粒子の混合スラリーを分離し、強
磁性体微粒子を再利用する目的で設けられてい
る。１３は第二磁気フイルター１２により分離し
た強磁性体微粒子の貯留槽で、分離した強磁性体
微粒子は、反応槽４に送られて再利用される。１
４は第二磁気フイルター１２により分離された赤
潮プランクトンを貯留する赤潮スラリー槽であ
り、ここに貯留された赤潮スラリーは、１５の遠
心分離機で脱水・濃縮処理される。
赤潮発生水域１より、赤潮プランクトンを含む
海水は、取水ライン２、取水装置３を経て反応槽
４に達し、貯槽５から供給される強磁性体微粒子
〔例えばマグネタイト（Fe3C4）、酸化コバルト、
酸化クロム等〕と共に反応槽４において十分混合
されて、強磁性体微粒子と赤潮プランクトンは互
いにからみ合つて付着しあう。この際、必要に応
じて設備１０，１１より無機質凝集剤（水に溶解
した時Al（OH）3、Fe（OH）3等となるもの）、高分
子凝集剤（アルギン酸ソーダー等）を添加して更
にそのからみ合いを促進させることもできる。強
磁性体微粒子と赤潮プランクトンは、からみ合つ
てあたかも一つの微粒子様となつて、第一磁気フ
イルター７に達し、該微粒子は第一磁気フイルタ
ー７で捕捉され、処理された清浄な処理水は放流
ライン９を経て、赤潮発生水域１へ放流される。
一定時間後、第一磁気フイルター７は、捕捉さ
れた微粒物で目詰りを起し、通水時の圧力損失が
高まると共に微粒物の捕捉能力が低下する。この
ような状態になつた時、反応槽４からの通水を止
め、必要に応じて第一磁気フイルター７にかかつ
ている磁力を取り去つて、水又は水と空気などを
第一磁気フイルター７に流入させ、フイルターの
洗浄を行う。この洗浄によつて除去された微粒物
（強磁性体微粒子と赤潮プランクトンとのからみ
合つたもの）は、回収槽８に流入する。
さらに、回収槽８に流入した微粒物を、強磁性
体微粒子と赤潮プランクトンに分けるために、第
２磁気フイルター１２に流入せしめる。
したがつて第１磁気フイルター７では、微粒物
の捕捉を行い、第２磁気フイルター１２では微粒
物を分離するという、まつたく逆の操作を行つて
いるが、これは、両者の運転条件を異ならせて行
つている。
すなわち、第１磁気フイルター７では、第２磁
気フイルター１２に比較し、より強い磁力で、し
かもフイルター内を通過する水の流速をゆるやか
にして、フイルターに微粒物を捕捉させるのに対
し、第２磁気フイルター１２では、第１磁気フイ
ルター７より弱い磁力で、しかもより速い流速で
フイルター内を通過させてやる。この操作により
弱い磁力でもフイルターに捕捉されやすい強磁性
体微粒子が優先的にフイルターに付着し、弱い磁
力が速い流速ではフイルターに捕捉されにくい赤
潮プランクトンが付着されずに第２磁気フイルタ
ーを通過し、１４の赤潮スラリー槽に貯留され
る。
また、第２磁気フイルター１２に優先的に付着
した強磁性体微粒子は、第１磁気フイルター７で
行つたと同様の洗浄操作により、フイルターを洗
浄し、この洗浄水（強磁性体微粒子を含む）を１
３の貯留槽に入れ、再利用を行う。赤潮スラリー
槽１４に貯留された赤潮スラリーは、遠心分離機
１５で脱水濃縮され、スラツジとして排出され
る。このスラツジはスラツジ貯槽１６に貯めら
れ、焼却又は埋立処理などに処せられる。また遠
心分離脱水は、ライン１７を経由して、取水ライ
ン２に返送されるか、又はそのまま、もとの赤潮
海域に放流される。
本発明方法の効果は次の如くである。
(イ) 強磁性体微粒子と第１磁気フイルターを用い
て赤潮を回収、濃縮すると共に、
(ロ) 第２磁気フイルターを用いて強磁性体微粒子
を回収、再利用し、赤潮プランクトンは、遠心
分離機で濃縮、脱水処理を行う。
(ヘ) 以上の操作により、従来困難であつた強磁性
体微粒子の回収・再利用を可能とし、ランニン
グコストの低減に大きく寄与することができ
た。
実施例
第１図に示したフローにより本発明の方法にて
赤潮回収処理を行い、本発明の方法の効果を確認
した。
(1) 第一磁気フイルターとその運転法
(1) 磁気フイルター：電磁フイルター
(2) フイルターにかかる磁力：3KOe
(3) 通水速度（フイルター内を通過する水の速
度）：200ｍ／ｈ
(4) 通水時間：30分通水後、200の水でフイ
ルターを洗浄
(2) 第二磁気フイルターとその運転法
(1) 磁気フイルター：電磁フイルター
(2) フイルターにかかる磁力：1KOe
(3) 通水速度：1000ｍ／ｈ
(4)通水時間：１分間通水後、10の水でフイ
ルターを洗浄
(3) 添加した強磁性体微粒子
(1) マグネタイト（Fe3O4）
●純 度：98％以上
●真比重：5.1ｇ／ml
●平均粒径：0.52μ
●かさ比重：約0.5ｇ／ml
●磁 化：85.4emu／ｇ（7KOeにおいて）
(4) 実験に使用した赤潮プランクトン
瀬戸内海に発生したホリネリア、スケレトネ
マ、オリソデイスクス等の赤潮プランクトン
（一種又は一種以上の混合試料）。濃度は20〜30
mg／（SSとして）である。
(5) 実験方法
瀬戸内海に発生した赤潮海域に、第１図の実
験装置（処理能力10m3／ｈ）を台船上に設設置
してこの台船を曳船により曳航し実験を行つ
た。マグネタイトの添加量は、20mg／とし、
再利用マグネタイトを20mg／、計40mg／
を、反応槽手前に注入を行つた。
(6) 実験結果
第２図に第一磁気フイルターにおける赤潮プ
ランクトンの回収率を示す。
この結果から、第一磁気フイルターにおける
赤潮プランクトンの回収率は、90％近い好成績
を得ることができ、この赤潮プランクトン回
収・処理システムは、非常に有効であることを
確認した。[Table] An embodiment of the present invention will be described according to the flow shown in FIG. 1 is an area where red tide occurs, 2 is an intake line for red tide seawater, 3 is a water intake device that also serves as garbage removal, 4 is a reaction tank, 5 is a storage tank for water containing ferromagnetic particles, 6 is a water tank containing ferromagnetic particles in reaction tank 4 7 is a first magnetic filter, 8 is a recovery tank for a mixed slurry of red tide plankton and ferromagnetic particles, 9 is a discharge line for treated water, 10 is an inorganic flocculant injection facility provided as necessary, 11 is a polymer flocculant injection facility, which is also installed as necessary. A second magnetic filter 12 is provided for the purpose of separating the mixed slurry of red tide plankton and ferromagnetic particles and reusing the ferromagnetic particles. 13 is a storage tank for the ferromagnetic particles separated by the second magnetic filter 12, and the separated ferromagnetic particles are sent to the reaction tank 4 and reused. 1
4 is a red tide slurry tank that stores the red tide plankton separated by the second magnetic filter 12, and the red tide slurry stored here is dehydrated and concentrated by a centrifuge 15. Seawater containing red tide plankton from the red tide generating area 1 reaches the reaction tank 4 via the water intake line 2 and the water intake device 3, and is filled with ferromagnetic fine particles [e.g. magnetite (Fe 3 C 4 ), cobalt oxide] supplied from the storage tank 5. ,
The ferromagnetic particles and red tide plankton become entangled and adhere to each other. At this time, inorganic flocculants (those that form Al(OH) 3 , Fe(OH) 3 , etc. when dissolved in water) and polymer flocculants (sodium alginate, etc.) are added from equipment 10 and 11 as necessary. It is also possible to further promote the entanglement. The ferromagnetic particles and the red tide plankton become entangled and become like one particle and reach the first magnetic filter 7. The particles are captured by the first magnetic filter 7, and the treated clean treated water is discharged. It passes through line 9 and is discharged to red tide occurrence area 1. After a certain period of time, the first magnetic filter 7 becomes clogged with the captured particulates, and the pressure loss during water flow increases and the ability to capture the particulates decreases. When such a state occurs, the flow of water from the reaction tank 4 is stopped, the magnetic force applied to the first magnetic filter 7 is removed as necessary, and the water or water and air is transferred to the first magnetic filter 7. to wash the filter. The fine particles (entangled ferromagnetic particles and red tide plankton) removed by this washing flow into the collection tank 8 . Furthermore, the fine particles that have flowed into the collection tank 8 are caused to flow into a second magnetic filter 12 in order to separate them into ferromagnetic fine particles and red tide plankton. Therefore, the first magnetic filter 7 captures the particulate matter, and the second magnetic filter 12 separates the particulate matter, which is the exact opposite operation. I'm leaving. That is, the first magnetic filter 7 uses a stronger magnetic force than the second magnetic filter 12 and also slows down the flow rate of water passing through the filter to allow the filter to capture particulate matter. The magnetic filter 12 allows the fluid to pass through the filter with a weaker magnetic force than the first magnetic filter 7 and at a higher velocity. Through this operation, ferromagnetic particles that are easily captured by the filter even with a weak magnetic force are preferentially attached to the filter, and red tide plankton, which is difficult to be captured by the filter when a weak magnetic force is present at a high flow rate, are not attached and pass through the second magnetic filter. It is stored in 14 red tide slurry tanks. Further, the ferromagnetic fine particles preferentially attached to the second magnetic filter 12 are removed by cleaning the filter by the same cleaning operation as performed for the first magnetic filter 7, and the cleaning water (including the ferromagnetic fine particles) 1
Put it in the storage tank 3 and reuse it. The red tide slurry stored in the red tide slurry tank 14 is dehydrated and concentrated in a centrifuge 15 and discharged as sludge. This sludge is stored in a sludge storage tank 16 and is incinerated or landfilled. Further, the centrifuged and dewatered water is returned to the water intake line 2 via the line 17, or is discharged as is into the red tide area. The effects of the method of the present invention are as follows. (b) Collecting and concentrating red tide using ferromagnetic particles and a first magnetic filter, (b) collecting and reusing ferromagnetic particles using a second magnetic filter, and centrifuging red tide plankton. It is concentrated and dehydrated using a machine. (f) Through the above operations, it has become possible to recover and reuse ferromagnetic particles, which has been difficult in the past, and has made a significant contribution to reducing running costs. Example A red tide recovery process was performed using the method of the present invention according to the flow shown in FIG. 1, and the effects of the method of the present invention were confirmed. (1) First magnetic filter and its operation method (1) Magnetic filter: Electromagnetic filter (2) Magnetic force applied to the filter: 3KOe (3) Water flow speed (speed of water passing through the filter): 200 m/h (4 ) Water flow time: After 30 minutes of water flow, wash the filter with 200ml of water (2) Second magnetic filter and its operating method (1) Magnetic filter: Electromagnetic filter (2) Magnetic force applied to the filter: 1KOe (3) Water speed: 1000m/h (4) Water flow time: After 1 minute of water flow, wash the filter with 10% water (3) Added ferromagnetic fine particles (1) Magnetite (Fe 3 O 4 ) ●Purity: 98 % or more ●True specific gravity: 5.1g/ml ●Average particle size: 0.52μ ●Bulk specific gravity: Approx. 0.5g/ml ●Magnetization: 85.4emu/g (at 7KOe) (4) Red tide plankton used in the experiment In the Seto Inland Sea Red tide plankton (one type or a mixed sample of more than one type) such as Holineria, Skeletonema, and Orythodisuchus. Concentration is 20-30
mg/(as SS). (5) Experimental method The experimental equipment shown in Figure 1 (processing capacity: 10 m 3 /h) was installed on a barge in the red tide area of the Seto Inland Sea, and the barge was towed by a tugboat to carry out the experiment. The amount of magnetite added is 20mg/
20mg/total of recycled magnetite, 40mg/
was injected before the reaction tank. (6) Experimental results Figure 2 shows the recovery rate of red tide plankton in the first magnetic filter. From this result, the red tide plankton recovery rate in the first magnetic filter was close to 90%, confirming that this red tide plankton collection and processing system is extremely effective.
第１図は本発明の赤潮回収処理方法の概略のフ
ロー、第２図は本発明の実施例の、第１磁気フイ
ルターにおける赤潮プランクトン回収率（SSと
して、％）を示す。
FIG. 1 shows a schematic flow of the red tide recovery processing method of the present invention, and FIG. 2 shows the red tide plankton recovery rate (% as SS) in the first magnetic filter in an example of the present invention.
Claims (1)
いて赤潮プランクトンを含有する水に、強磁性体
微粒子を添加した後、必要に応じて凝集剤を加え
て、第一磁気フイルターに通水し、一定時間後第
一磁気フイルターを洗浄し、赤潮プランクトンと
強磁性体微粒子の混合物を含有する上記洗浄水を
第二磁気フイルターに通して強磁性体微粒子と赤
潮プランクトンとに分離し、分離された強磁性体
微粒子を再利用すると共に、赤潮プランクトンは
脱水濃縮処理を行うことを特徴とする赤潮回収処
理方法。1. In the method of collecting and concentrating red tide plankton, ferromagnetic fine particles are added to water containing red tide plankton, a flocculant is added as necessary, the water is passed through the first magnetic filter, and after a certain period of time, the water is One magnetic filter is washed, and the washing water containing a mixture of red tide plankton and ferromagnetic particles is passed through a second magnetic filter to separate ferromagnetic particles and red tide plankton, and the separated ferromagnetic particles are separated. A red tide collection method that is characterized by reusing red tide plankton and dehydrating and concentrating it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59100641A JPS60244390A (en) | 1984-05-21 | 1984-05-21 | Red tide recovery treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59100641A JPS60244390A (en) | 1984-05-21 | 1984-05-21 | Red tide recovery treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60244390A JPS60244390A (en) | 1985-12-04 |
| JPS6356833B2 true JPS6356833B2 (en) | 1988-11-09 |
Family
ID=14279449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59100641A Granted JPS60244390A (en) | 1984-05-21 | 1984-05-21 | Red tide recovery treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60244390A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19637711C2 (en) * | 1995-09-19 | 2003-05-28 | Hitachi Ltd | Magnetic separator device and device for cleaning liquids |
| KR100248174B1 (en) * | 1997-09-22 | 2000-03-15 | 김용하 | Magnetic fluid separating system for continuous removing floating solid in waste water |
| DE102009030712A1 (en) * | 2009-06-26 | 2010-12-30 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Method for removing CO2 from a smoke or exhaust of a combustion process |
| CN103030203B (en) * | 2012-12-27 | 2014-06-11 | 中国科学院合肥物质科学研究院 | Preparation method of composite inorganic polymer stable algaecide and algae removing method |
-
1984
- 1984-05-21 JP JP59100641A patent/JPS60244390A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60244390A (en) | 1985-12-04 |
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