Preparation method for microbial nanospheres for water quality purification

Abstract

The invention relates to a preparation method for microbial nanospheres for water quality purification, which is characterized by comprising the following steps of: mixing nano-SiO2 with clay powder and zeolite powder in a ratio, adding water and granulating to obtain a spherical nano-carrier; airing the spherical nano-carrier, calcining the spherical nano-carrier for 2-4h at 700-800 DEG C, and cooling and airing; and mixing the spherical nano-carrier with compound active bacterial solution containing chelate-state calcium in a ratio that 0.8 L of the bacterial solution is added per kilogram of the nanospheres, stirring so that the bacterial solution is uniformly adsorbed and fixed on and attached to the porous surfaces of the nanospheres, thus obtaining the microbial nanospheres for aquaculture water body purification. The compound active bacterial solution containing chelate-state calcium is prepared by culturing the photosynthetic bacteria, which hare selected, domesticated and rejuvenated from a local culture water body, through co-fermentation together with EM stock solution and calcium-containing substances. The microbial nanospheres obtained by the preparation method disclosed by the invention are simple in preparation process, are capable of rapidly decomposing organic pollutants in the aquaculture water body, improving the water quality, and increasing the output and the quality of aquatic products.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to the purification treatment of aquaculture wastewater. Background technique [0002] In the process of aquaculture, due to the input of chemicals and bait and the discharge of farmed animal feces, the aquaculture water is prone to eutrophication and the water quality deteriorates, which not only restricts the sustainable development of aquaculture, but also seriously pollutes the surrounding area. water environment. [0003] In aquaculture, microbial preparations are commonly used to treat organic pollutants in sediment, purify water quality, and inhibit pathogenic microorganisms. The invention patent with the application number 200910077356.4 discloses a compound bacteria and algae preparation for purifying aquaculture wastewater. The main bacteria are nitrifying bacteria and Bacillus licheniformis; Water purification compound bacterial agent for chemical aquaculture sy...

AI Technical Summary

Problems solved by technology

Although these materials have their own characteristics, they have many disadvantages when used as water treatment carriers, such as large specificity, high fluidization energy consumption, low porosity, small specific surface area, high cost, and complicated processing technology (such as activated carbon and porous stainless steel).