| 摘要 |
The invention relates to a method for treating water while growing fish in a closed system, comprising two modules functioning separately, in particular that of growing fish and that of biological water treatment, where mineralization, nitrification and denitrification of organic substances, removal of suspended particles of silt and sediment are carrid out. Said modules exchange with contaminated and treated water between each other according to the established procedure. Water of the unit for growing fish is used multiply, and the contaminants produced while growing fish are concentrated with the aid of a contaminant saturator and kept in the surface "water-foam" layer of the contaminant saturator. According to the procedure, these contaminants are periodically discharged to the module of biological treatment by gravity flow. Simultaneously, the same part of the treated water from the module of biological treatment is delivered into the module of growing fish, after what the modules of growing fish and water treatment continue functioning separately, until, according to the programme established, the exchange between polluted and treated water is renewed. |
