The invention belongs to the technical field of
environmental protection, and specifically relates to a preparation method of a microbiological water purifier. The method comprises the following steps: preparing and mixing materials and liquid bacterial strains, feeding the prepared mixture into a
steam explosion boiler, closing the door of the
steam explosion boiler, introducing high-pressure steam into the
steam explosion boiler, wherein in this process the
cold air in the steam explosion boiler is expelled out from the boiler in a very short time, and materials in the steam explosion boiler are brought out by the
cold air; feeding the materials after the treatment of steam explosion into a sealed
fermentation chamber, wherein in the
fermentation chamber the liquid bacterial strains start to ferment, taking out the
fermentation product after the fermentation reactions, and packing the fermentation product into bags so as to obtain finished products. The preparation method adopts a combination of a plurality of bacterium species to carry out mixed fermentation reactions so as to produce a water purifier which has the
advantage of high bacterium content and has the functions of nitrifying, denitrifying, reducing
nitrogen content, eliminating
phosphor, and removing organic substances in water. The water purifier can well remove the nutritional substances such as
nitrogen,
phosphor, and the like, in the water, also can effectively inhibit other harmful
bacteria in the water at the same time, and achieves the goals of preventing diseases and improving
survival rate.