METHOD FOR WATER TREATMENT IN THE PROCESS OF JOINT GROWING OF FISH AND PLANTS Russian patent published in 1997 - IPC

FIELD: joint rearing of fishes and plants in growing plants with recycled water supply system. SUBSTANCE: method involves directing water from fish-rearing pond for mechanical and biological cleaning; dividing water mass into two flows; returning one water flow into fish-rearing pond, accumulating other flow having increased suspended substance concentration and separating it into upper water layer and water layer containing condensed sediment; producing compost soil from sediments; directing upper water layer through plant rootage; directing a portion of upper water layer for biological cleaning during growing period of seedlings; introducing nutrients into this water during vegetative plant growth period and adding fresh water upon mechanical cleaning; saturating water with oxygen prior to returning it into pond, mixing it with fresh water so that it has predetermined temperature. EFFECT: increased efficiency by recycling of sediments and upper layer water without discharging this water into environment and providing required amounts and quality of water for effective fish rearing and plant growing. 1 dwg