Urban sewage treatment compound bacteria and preparation method thereof

Abstract

The invention discloses urban sewage treatment compound bacteria and a preparation method thereof. The compound bacteria comprise mixed strains and carriers. The mixed strains comprise, by weight, 10-15 parts of saccharomycetes, 5-8 parts of bacillus subtilis, 20-30 parts of photosynthetic and 3-10 parts of actinomyces. The carriers are corn straw powder. The weight ratio of the mixed strains to the carriers is 1:5. The preparation method includes the steps: mixing the mixed strains and the carriers according to a preset weight ratio; uniformly stirring the mixed strains and the carriers; enabling the mixture to stand for 3 hours; drying the mixture at the low temperature of 5 DEG C; controlling water content in 2%-6% to obtain the sewage treatment compound bacteria. Raw materials of the compound bacteria are conveniently and easily obtained, and the compound bacteria are low in cost, environmentally friendly, pollution-free and high in sewage treatment efficiency. The strains of the compound bacteria are symbiotic and coordinated, and the preparation method of the compound bacteria is simple, convenient, easy and beneficial to industrial production.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a composite bacterial agent for urban sewage treatment and a preparation method thereof. Background technique [0002] In recent years, with the rapid growth of my country's economy and the continuous improvement of the level of urbanization, the problem of water pollution has become increasingly serious. In addition, with the acceleration of my country's urbanization process, the development of small and medium-sized towns is very rapid. [0003] Most of the country's more than 19,200 official towns do not have sewage treatment facilities. The shortage of water resources in my country is, on the one hand, due to the rapid increase in water consumption, and on the other hand, to the quality-based water shortage caused by the large-scale pollution of the water environment caused by the large amount of sewage discharge. Nearly 80% of the sewage is directly discharged int...

AI Technical Summary

Problems solved by technology

[0004] At present, there are three main methods for sewage treatment: (1) physical methods, such as sedimentation, adsorption and filtration, which have high equipment costs and can only remove particulate pollutants of a specific particle size; (2) chemical methods, such as Chinese legal , precipitation method and electrolysis method, the chemicals used will have residues in the water, and are generally aimed at specific chemical substances, and do not have a broad spectrum; (3) Biological methods, currently commonly used are single strain treatment methods, traditional The domesticated microorganisms cultivated with activated sludge can no longer effectively remove pollutants such as ammonia nitrogen, sulfide, and phosphorus-containing compounds in wastewater. These compounds accumulate in large quantities in the environment and endanger human physical and mental health.