Composite photosynthetic bacteria preparation applied to sewage treatment and preparation method of composite photosynthetic bacteria preparation

Abstract

The invention provides a composite photosynthetic bacteria preparation which is applied to sewage treatment and can quickly degrade sulfuretted hydrogen, ammoniacal nitrogen and COD (chemical oxygen demand) as well as a preparation method of the composite photosynthetic bacteria preparation. A thiocapsa roseopersicina strain in purple sulfur photosynthetic bacteria and a rhodopseudomonas palustris strain in purple non-sulfur photosynthetic bacteria are adopted to obtain thiocapsa roseopersicina and rhodopseudomonas palustris photosynthetic bacteria preparation with high concentration after composite seed activation culture, seed culture, anaerobic fermentor light culture and other culture steps. The composite photosynthetic bacteria preparation can quickly and efficiently degrade sulfuretted hydrogen, ammoniacal nitrogen and COD in a water body during sewage treatment. The invention provides a preparation method of the composite photosynthetic bacteria preparation which is obtained by mixed culturing of thiocapsa roseopersicina and rhodopseudomonas palustris and can quickly and efficiently degrade sulfuretted hydrogen, ammoniacal nitrogen and COD in sewage, the growth speed is high, the thallus content is high, and the culture time is short.

Description

technical field [0001] The invention belongs to the technical scope of sewage treatment, and in particular relates to a composite photosynthetic bacteria preparation capable of rapidly degrading hydrogen sulfide, ammoniacal nitrogen and COD in sewage treatment and a preparation method thereof. Background technique [0002] With the continuous development of urbanization, municipal treatment facilities such as sewage treatment plants, sewage lifting stations, garbage transfer stations, and landfills are getting closer and closer to people's living areas. The foul-smelling exhaust gas generated by these facilities during operation It has become an important factor affecting people's normal life. The malodorous exhaust gas mainly includes sulfur-containing compounds (hydrogen sulfide, methyl mercaptan, methyl sulfide, etc.), nitrogen-containing compounds (ammonia, etc.) and compounds composed of carbon, hydrogen or carbon, oxygen, and oxygen (fatty acids, etc.). It has the cha...

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Problems solved by technology

And up to the present, also do not see relevant technical scheme of preparation method of Sulfur persicae to disclose

Moreover, from the existing literature, most of the composite photosynthetic bacteria only carry out the mixed culture of the strains in the purple non-sulfur bacteria, and there is no report on the mixed culture between the purple sulfur bacteria and the purple non-sulfur photosynthetic bacteria.