Application of probiotic activated sludge in sewage treatment

Abstract

The invention discloses an application of probiotic activated sludge in sewage treatment. The preparation method comprises the following specific steps: adding probiotics and water into a solid culture medium, carrying out solid-state fermentation at the constant temperature and humidity of 25-35 DEG C and the relative humidity of 60-90% RH, and forming to obtain a solid fermentation preparation; adding the solid fermentation preparation into a nutrient medium for amplification culture; adding the liquid subjected to expanding culture into sewage with the same volume, and then adding a water treatment fungicide for co-culture to obtain mixed liquid; the mixed liquid is transferred into sewage, fluid culture is adopted until the sewage reaches the discharge standard, meanwhile, solid-liquid separation is carried out to form probiotic activated sludge, and the input amount of the mixed liquid is set according to the actual scale. According to the application, probiotics serve as a main body, harmful microorganisms are far lower than those of traditional activated sludge, and even if the harmful microorganisms enter substances such as soil and agricultural waste, the probiotic effect of the active sludge can be achieved. Generally speaking, the sewage is purified, and meanwhile, the biological sludge is modified.

Description

technical field [0001] The invention relates to the technical field of microorganism cultivation and sewage treatment, in particular to the application of a probiotic activated sludge in sewage treatment. Background technique [0002] Activated sludge is a treatment method commonly used in water treatment. Its essence is a microbial group formed under natural conditions that consumes pollutants in water bodies and the organic and inorganic substances attached to them. The water contains a class of microorganisms that can produce flocculants. It is these microorganisms that integrate other microorganisms without flocculation characteristics, organic and inorganic in the water body, and on the basis of which the reproduction of live bacteria and the degradation of dead bacteria occur simultaneously, and then It has evolved into a sludge-like substance, which is called activated sludge because it has certain water treatment activity. [0003] The microorganisms in activated sl...

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Problems solved by technology

During the strict composting process, harmful microorganisms can produce disgusting odors and pollute the environment. Even under high temperature decomposing, there are still 1-2% of harmful microorganisms remaining.

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