In order to trace the path where the water is zigzag during percolation mannered null percolation treating

摘要

With the filtration equipment for clarifying (10) for the fish farming tank, the substance (11) which is divided into the mutual traffic space of set (I, II and III, and so on) many making use of the special entrance and exit control control equipment (12) is included, during filtration processing in order to trace the route where the water is zigzag it is receipt possible, in addition, the entrance side supply position (15) of the purification service water, temperature control unit (13) and the pump (14) which makes recycling the water possible are included in this. As the whole inserts the substance (11) inside the tank and is included, the filtration element (A and B, C, and so on) in order from under influx to the upper part and from above for outflow to the lower part to become possible, mainly to the filtration entire device of the water 1 pumps (14) is arranged at least at least between the entrance side supply positions (15) of 1 places.