Operation method for ecological biogas slurry treatment aquaculture system

Abstract

The invention provides an operation method for an ecological biogas slurry treatment aquaculture system. The ecological biogas slurry treatment aquaculture system comprises a solid-liquid separation tank, a decomposing treatment tank, an aerating treatment tank, an acid-base adjusting tank, an algae aquaculture tank and an animal aquaculture tank which are arranged according to a treatment technology sequence, wherein the solid-liquid separation tank, the decomposing treatment tank, the aerating treatment tank, the acid-base adjusting tank, the algae aquaculture tank and the animal aquaculturetank are sequentially in serial connection in an end to end mode through connection openings; the solid-liquid separation tank can perform sedimentation treatment and disinfection treatment on biogasslurry, the decomposing treatment tank can perform anaerobic and aerobic catabolism treatment on the biogas slurry, the aerating treatment tank can perform aerating treatment on the biogas slurry, the acid-base adjusting tank can supplement and adjust the concentration, the potential of hydrogen and nutrient salt ingredients of the biogas slurry, algae is cultivated in the algae aquaculture tank,the biogas slurry and methane gas are utilized for providing nutrients for the algae, the algae can purify the biogas slurry and the methane gas, and varieties of aquatic products are separately cultivated in the animal aquaculture tank to provide main feed for the algae. The operating method disclosed by the invention can form circular and ecological culture industry and improve environment.

Description

technical field [0001] The invention belongs to the technical field of biogas slurry treatment, and relates to biogas slurry purification cultivation, in particular to a biogas slurry ecological treatment cultivation system and an operation method thereof. Background technique [0002] Biogas slurry, also known as "anaerobic fermentation liquid", is a water-soluble by-product remaining after anaerobic fermentation of organic matter such as animal manure and straw. With the adjustment of the agricultural industry structure and the construction of new countryside, the intensive livestock and poultry breeding industry has developed rapidly. As the product of biogas anaerobic fermentation, these waste liquids are used as agricultural fertilizers or directly discharged, and little consideration is given to whether the discharge meets the standards or not. Agricultural safety. In fact, after anaerobic digestion, the biogas slurry still contains a large amount of nitrogen, phospho...

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Problems solved by technology

[0004] The research on the purification method of biogas slurry mostly follows the urban sewage treatment method, using physical, chemical and biological methods, such as natural biological treatment methods such as biological pond method and artificial wetland, and industrialized treatment models using reactors such as MBR, SBR and reverse osmosis. However, due to the characteristics of high operating costs and difficult operation techniques, these methods are difficult to promote in farmers, and the above methods are not very effective in removing N and P in water. Therefore, after simple aeration treatment of biogas slurry Direct discharge is still the main treatment method at present

There are also some biogas slurry used for farmland irrigation, biogas slurry seed soaking, foliar spraying, soilless cultivation, etc., but due to transportation costs and application safety issues, the use of biogas slurry is very small and cannot be used for large-scale aquaculture. A large amount of biogas slurry produced by anaerobic fermentation, so direct discharge is still the main treatment method of biogas slurry

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