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Priority to JP1972136369UpriorityCriticalpatent/JPS5516604Y2/ja
Publication of JPS4989294UpublicationCriticalpatent/JPS4989294U/ja
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Publication of JPS5516604Y2publicationCriticalpatent/JPS5516604Y2/ja
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
Y02W10/00—Technologies for wastewater treatment
Y02W10/10—Biological treatment of water, waste water, or sewage
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Aeration Devices For Treatment Of Activated Polluted Sludge
(AREA)
Farming Of Fish And Shellfish
(AREA)
Cleaning Or Clearing Of The Surface Of Open Water
(AREA)