Removal of Algae by Coagulation and Foam Separation using Polyaluminum Chloride and Milk Casein.
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- SUZUKI Yoshihiro
- Dept. of Civil & Environ. Eng., Miyazaki Univ.
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- MARUYAMA Toshiroh
- Dept. of Civil & Environ. Eng., Miyazaki Univ.
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- KAWAZOE Satoshi
- Head Office, Nihon Suido Consultants Co., Ltd.
Bibliographic Information
- Other Title
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- PACとカゼインを用いた凝集・泡沫分離法による微細藻類の回収除去
- PAC ト カゼイン オ モチイタ ギョウシュウ ホウマツ ブンリホウ ニ ヨル ビサイ ソウルイ ノ カイシュウ ジョキョ
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Abstract
Coagulation foam separation with dispersed air using milk casein as a collector and a frother is an effective method to remove suspended substances in water. Harmful algae, which proliferate as outbreaks in many lakes and ponds, are considered suspended organic substances. Hence, the applicability of this method for algal removal is promising. In this study, removal of algae by coagulation and foam using polyaluminum chloride (PAC) and casein was examined.<br>Highly effective processing was achieved within 10 min by adjusting pH and dosages of PAC and casein. The most important consideration in the foam separation process is adding the proper amount of casein, which functions as both collector and frother. The removal efficiency of Microcystis aeruginosa, Selenastram capriornutum, and Chlorella pyreniodosa was over 97% when PAC and casein were added at a dosage of 3 mg-Al·l-1 and 15 mg·l-1, respectively at pH 7-8. The percentage of liquid volume of collapsed foam in the total amount of algal suspension was about 2%. Approximately 100% of the added PAC and casein were recovered from the treated water. These results prove that this novel method has a high efficiency and applicability in removing algae from aquatic blooms.
Journal
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- Journal of Japan Society on Water Environment
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Journal of Japan Society on Water Environment 25 (5), 297-302, 2002
Japan Society on Water Environment
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Details 詳細情報について
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- CRID
- 1390282680057106304
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- NII Article ID
- 10008539277
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- NII Book ID
- AN10372439
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- COI
- 1:CAS:528:DC%2BD38XltFajt7s%3D
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- ISSN
- 18813690
- 09168958
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- NDL BIB ID
- 6131900
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed