Improvement of water quality in rivers and lakes using fine bubble generation equipment (measures against blue-green algae and musty odors)

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Water quality improvement (countermeasures against blue-green algae and mold odor) using fine bubble generation equipment.

last updated：Sep 28, 2026

エンバイロ・ビジョン

Successful suppression of blue-green algae and odor substances with microbubbles! Introduction of fine bubble generation devices at first-class rivers and water intake points by the Ministry of Land, Infrastructure, Transport and Tourism for water quality improvement.

【Overview of Fine Bubble Generation Device YJ and Water Quality Conservation Facility】 The introduction of a water quality conservation facility is required to address issues such as landscape impairment due to algal blooms in the reservoir at the mouth of the Onga River, the formation of hypoxic water masses in the bottom layer, and the generation of odorous substances caused by algal proliferation. Based on the achievements of water quality conservation measures nationwide, a fine bubble "YJ nozzle" has been installed to purify a water area measuring 400 meters in width and 1200 meters in length. 【Effects After Installation】 ■ Successful suppression of algal blooms and odorous substances 　＜Before Improvement＞　It was thought that the introduction of an ozone advanced water treatment facility, which requires a huge investment, was necessary for the water supply facility drawing from this intake. 　＜Currently＞　No need for the introduction of an ozone advanced water treatment facility! Successful cost reduction! *For details on water quality improvement (measures against algal blooms and musty odors) using the fine bubble generation device, please request materials or view the PDF data available for download.

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basic information

**Overview of the Fine Bubble Generation Device YJ** Fine bubbles have the characteristic of remaining in water for a long time due to their small bubble diameter. The basic system consists of a simple combination of a fine bubble injection nozzle, an underwater pump, a water supply pipe, and an air supply hose. **Expected Water Quality Improvement Functions of the Fine Bubble Generation Device** - Water quality improvement function through DO supply (direct supply) - Suppression of the leaching of nutrients and other substances by supplying and improving DO to the bottom sediment (improvement of the habitat for aquatic organisms) - Functions of fine bubble rising, dispersing, and stirring - Improvement of water quality of raw water by dispersing odor components, destruction of algae, and promoting aeration through water mass stirring *For more details on water quality improvement (measures against blue-green algae and musty odors) using the fine bubble generation device, please request materials from our company or view the PDF data available for download.*

Price information

Water quality improvement (algae and mold odor measures) using fine bubble generation equipment; please contact us for pricing.

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Applications/Examples of results

【Examples of Applications for Fine Bubble Generation Devices】 Air, oxygen, ozone, hydrogen, nitrogen, carbon dioxide, etc. Micro-nanobubbling of various gases in liquids - High-efficiency aeration in adjustment tanks and aeration tanks for wastewater treatment, reduction of coagulants due to the charging effect of micro-nanobubbles, and reduction of sludge volume - Odor reduction in lake purification, dam lake purification, and underground pits - Sterilization treatment of ballast water using ozone micro-nanobubbles, reduction of COD and BOD, and neutralization treatment using carbon dioxide - Line mixer for gas dissolution processes (also compatible with sanitary applications) - Mixing steam micro-nanobubbles into water for application in steam mixers - Promotion of growth and maintenance of freshness for aquatic and agricultural products - Mixing nozzles for high-concentration oxygen water, ozone water, and rapid oxidation reactions - Various cleaning applications (vegetable washing, washing machines, parts cleaning, etc.) - Water purification plants, sewage treatment plants (various high-efficiency ozone sterilization), etc. For details on water quality improvement (measures against blue-green algae and mold odors) using fine bubble generation devices, please request materials or view the PDF data from the download section.