The circulating Stream System for semisulcospira farming water

摘要

The present invention relates to construction of fish farms for artificial cultivation of marsh snail using river water. More specifically, the present invention relates to construction of a natural circulation-type marsh snail farm. To this end, river water with irregular water quality is moved to a fish farm higher than river water by using a pump, and then is screened primarily to filter out various contaminants and debris which can be produced in the river water. Chemical and biological contaminants are treated by means of an ozone generator, and contaminants are filtered again by a secondary screen. By allowing the river water to pass through an activated charcoal filtration system to reduce residual ozone, small contaminants, COD and BOD, the water quality is improved to a level of first grade water, and is brought to one or more marsh snail farms consisting of pebbles and sand. Before the water is discharged by a drainage pump, the water is re-discharged to the river after passing through a reed swamp which purifies contaminants.