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Application filed by Валентин Олександрович Кобилянський, Валентин Александрович Кобилянский, Станіслав Іванович Кобилянський, Станислав Иванович Кобылянский, Володимир Степанович Свірідов, Владимир Степанович СвиридовfiledCriticalВалентин Олександрович Кобилянський
Priority to UA2000105754ApriorityCriticalpatent/UA40897A/en
Publication of UA40897ApublicationCriticalpatent/UA40897A/en
Drainage device has a ferroconcrete channel on the bottom of which the water outlet perforated tubes are laid out. Between the drainage tubes are placed the air supply perforated tubes for the water aeration, filled up with gravel and crushed rock, at that the device is aerating forming biological film, filtering and purifying the water of organic suspensions.
Artificial closed water area installed in depression made by digging ground, and method for inhibiting deterioration of water quality of closed water area