| 摘要 |
PURPOSE:To eliminate red tide and to recover red tide planktons, by bringing chlorine into contact with red tidelike raw water, adding fine particles of a ferromagnetic material thereto under stirring then passing the water through a magnetic filter and concentrating and capturing the red tide planktons. CONSTITUTION:Raw water contg. red tide planktons from a red-tide like water area 1 is drawn through an intake line 2 and an intake device 3 into a chlorine contact device 11, where the greater part of the red tide planktons are made extinct. The water is then carried to a reaction vessel 4 of which the main effect is stirring. The water in said tank is thoroughly stirred together with fine particles of a ferromagnetic material such as magnetite supplied from a storage tank 5 and the fine particles of the ferromagnetic material and the extinct red tide planktons entangle and stick with and to each other. The water flows through an inflow port 35 into a magnetic filter 7 and arrives at the filter media 40 which are applied with magnetic field by a magnet 39. The fine particles are thus captured by the media and the raw water is released through a release line 9 into the area 1. |
