METHOD FOR PREPARING LIQUID FERTILIZER BY USING STARFISH

PURPOSE: Provided is a method for preparing a liquid fertilizer by using a starfish which is disusable and breaks down ocean ecosystem. CONSTITUTION: The method comprises steps of: (i) washing collected starfishes(s10); (ii) cutting the washed starfishes into a certain size(s20); (iii) pulverizing the cut starfishes into fine powders(s30); (iv) putting a single organic acid or a mixture in a reactor(s40); (v) adding 30-80 parts by weight of the starfish fine powders of the step (ii) little by little to the reactor of the step (iv) with stirring to dissolve the starfish fine powders in the inorganic acid(s50)(s60); (vi) stationing the dissolved solution of the step (v) for a certain time(s70); (vii) adjusting the pH of the dissolved solution of the step (vi)(s80); (viii) heating the dissolved solution of the step (vii) to a certain temperature(s90); (ix) after adding very a small amount of hydrolase to the solution of the step (viii), hydrolyzing it for a certain time(s100); and (x) filtering the hydrolyzed solution to make the final product(s110).