Compound microbial preparation for river treatment

The invention relates to the technical field of riverway treatment chemicals, and in particular relates to a compound microbial preparation for river treatment. The microbial agent comprises the following components in parts by weight: 70 to 85 parts of bacillus licheniformis, 50 to 60 parts of bacillus subtilis, 50 to 60 parts of nitrifying bacteria, 45 to 55 parts of thiobacillus denitrificans,20 to 30 parts of thiobacillus thiooxidans, 15 to 25 parts of actinomycetes and 10 to 20 parts of saccharomycetes. The preparation method comprises the following steps: carrying out enlarged culture on the components to obtain a seed bacterial liquid, carrying out fermentation culture on the seed bacterial liquid, proportionally mixing the bacterial liquid subjected to fermentation culture, then mixing the mixed bacterial liquid with a mixed carrier, and performing drying to obtain composite microbial preparation bacterial powder. According to the compound microbial preparation, the problem ofgoverning the polluted ri