Solid support on which microorganism group performing parallel dual mineralization reaction is immobilized, catalyst column, and method for producing solid medium for plant cultivation

摘要

An object of the present invention is to provide a method of efficiently producing nitrate nitrogen as inorganic nutrients from an organic material without performing any operation using constant electrical power such as aeration. Another object of the present invention is to provide a method of manufacturing a solid medium for cultivating a plant, which allows hydroponics to be performed through the direct addition of an organic fertilizer even in the case of performing hydroponics with solid medium cultivation. Provided is a method of manufacturing a carrier on which microorganisms capable of conducting a multiple parallel mineralization are immobilized, the method comprising: filling a container with a carrier having ventilation; adding thereto microorganisms that can conduct a multiple parallel mineralization by mineralization of an organic material to produce nitrate nitrogen; and subsequently adding an organic material and then leaving at rest until nitrate nitrogen starts to be produced in an effluent during washing the carrier through the addition of water to discharge the effluent from the carrier; thereby immobilizing the microorganisms capable of conducting a multiple parallel mineralization.