| 摘要 |
<p>A method and device for sterilization of organic fertilizer, whererin the method includes the step of formulating, in the wet and dry ingredients mixer sections (1 and 2), components of the composite fertilizer, after which said constituents are treated with an acid to form an acidic mixture (i.e. a pH less than 5) in the sterilizing reactor (33). The bacteria contained in the mixture adapt within a short time to the acidic environment and thrive therein. The components are then treated with a basic material, such as anhydrous ammonia, NH3 from a reservoir (38). The transition from strong acidic to mild acidic or basic pH is of such a severe nature that the bacteria cannot adapt to the changed pH and heat changes and as a result die within seconds. The finished fertilizer product (51) is thereby rendered sterile of bacteria which would otherwise thrive and consume the nitrogen within the fertilizer. The fertilizer held nitrogen is then safely locked into the organic fertilizer. The nitrogen is later released on application to soil when soil-borne bacteria feed on the fertilizer. The bacteria consume nitrogen, and alter the constituents making the elements assumable as nutrients for growth of plants.</p> |
