Ecological management system and ecological management method for excrement liquid of livestock and poultry

Abstract

The invention relates to an ecological management system for excrement liquid of livestock and poultry. The ecological management system comprises a source-separation water-saving house, a pollution treatment factory, a fodder factory and an auxiliary planting land. The pollution treatment factory comprises a high-temperature solid aerobiotic-fermentation system, a middle-temperature liquid anaerobic-fermentation system, a heating and heat balance system and a detection control system. A regulation pool is connected with a feed inlet of the middle-temperature liquid anaerobic-fermentation system through a delivery pump, methane generated by the middle-temperature liquid anaerobic-fermentation system is delivered to the heating and heat balance system, and the heating and heat balance system is connected a heating coil of the middle-temperature liquid anaerobic-fermentation system through a pipeline. The ecological management system has the advantages that finished products, namely liquid organic and inorganic compound fertilizer and liquid microbial fertilizer, of the pollution treatment factory are used for irrigation and drop irrigation of plants planted on the auxiliary plantingland, and pastures are taken as fodder raw materials for the fodder factory, so that cultivation cost is reduced, nutrition level of fodder is improved, and harmonious development of the breeding industry and the biological environment is promoted.

Description

technical field [0001] The invention belongs to the field of environmental protection technology, and in particular relates to a system and method for ecological treatment of excrement liquid in livestock and poultry farms. Background technique [0002] In recent years, the aquaculture industry has developed rapidly towards intensification and scale. While providing the market with rich and high-quality livestock and poultry products, it also brings a large amount of pollutants such as feces and urine. cause serious pollution. [0003] Traditional biogas digesters are generally monolithic structures built with reinforced concrete structures, which are costly and difficult to construct, and there are the following problems in the process of use: (1) Digestive residues are difficult to clean and block the biogas digesters, affecting the normal use of the biogas digesters; (2) ) liquid surface "crusting", which affects the normal gas production of the biogas digester, and also...

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Problems solved by technology

[0003] Traditional biogas digesters are generally monolithic structures built with reinforced concrete structures, which are costly and difficult to construct, and there are the following problems in the process of use: (1) Digestive residues are difficult to clean and block the biogas digesters, affecting the normal use of the biogas digesters; (2) ) liquid surface "crusting", which affects the normal gas production of the biogas digester and also creates potential safety hazards

[0004] CN101045901 discloses a conjoined biogas digester, the purpose of which is to treat sewage, and to leave as much sludge as possible in the biogas digester, which will cause blockage of the fermentation tank due to long-term accumulation, and the purpose of the conjoined biogas digester is to expand the volume; CN104328035 discloses a The biogas digester system mainly produces biogas fertilizer, and the soft biogas digesters are connected by sludge pumps, which requires high energy consumption and large investment in equipment

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