Removing nitrate in fish breeding plant, comprises lowering an oxygen content of the water by low pressure and reducing the nitrate in the water with lowered oxygen content by nitrate respiration of bacteria

摘要

The oxygen content is supplying inert plastic granulates and a negative pressure of 650 hPa lower. The reduction of nitrate by a biological degradable polymer granulates, which is supplied in a fluid bed. An INDEPNDENT CLAIM is also included for a device by using the above method.