IMPROVEMENT IN WATER QUALITY OF SOURCE OF WATER SUPPLY

摘要

PURPOSE:To increase the amount of dissolved oxygen and to simply improve water quality of the source of water supply without making water muddy by stirring, by irradiating water in the vicinity of a piled layer by a projector set near by the piled layer of the source of water supply to grow photosynthetic organisms. CONSTITUTION:First, a closed water zone, a projector 8 is set in the vicinity of a piled layer 6 formed by precipitation of polymer substances and nutritive salt-containing substances. Then water near by the piled layer is irradiated with light rays of the projector 8, photosynthetic organisms are grown in water, oxygen is released from the organisms and the amount of dissolved oxygen in water in the vicinity of the piled layer is increased.