Treatment and utilization system and method for waste of livestock and poultry breeding

Abstract

The invention discloses a treatment and utilization system for waste of livestock and poultry breeding. A sewage processor communicates with a sewage anaerobic tank through a sewage transfer pump, thesewage anaerobic tank communicates with a sewage aeration tank, which communicates with a residue liquid tank through a solid-liquid separator, and a feed inlet of the solid-liquid separator is connected to the residue liquid tank through a residue liquid transfer pump, and a water outlet of the solid-liquid separator is connected to the sewage aeration tank. A treatment and utilization method for waste of livestock and poultry breeding comprises: (1) flushing manure with water and collecting a residue liquid; (2) aerating and oxygenating the residue liquid; (3) performing solid-liquid separation to the residue liquid; (4) performing precipitation and anaerobic treatment to sewage; (5) removing waste gas; (6) pumping the obtained sewage to a sewage processor; (7) electro-coagulating, aerating and oxygenating the obtained sewage, and allowing the obtained sewage to pass through a filter membrane set for clear water extraction; (8) performing purification and discharging; (9) supplementing sewage to the sewage processor; and (10) repeating the steps to complete whole treatment. The system and method can efficiently harmlessly treatment to waste to form a commercial organic fertilizer.

Description

technical field [0001] The invention relates to the technical field of harmless treatment and utilization of organic waste from livestock and poultry breeding, in particular to facilities for processing and utilizing feces and sewage generated in livestock and poultry breeding. The present invention also relates to a processing utilization method using the processing utilization facility. Background technique [0002] Livestock and poultry breeding is an important industry related to the national economy and people's livelihood, and the livestock and poultry breeding industry also produces a large amount of breeding waste. According to statistics, the production of livestock and poultry manure in my country has reached 3 billion tons per year, and the discharge of aquaculture wastewater has reached 25 billion tons per year. About 80% of the livestock and poultry manure and aquaculture wastewater in farms are directly dumped or discharged without any treatment. The main sourc...

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Problems solved by technology

[0003] At present, there are no more than two methods for the treatment and utilization of livestock and poultry manure waste. One is to apply it to farmland for consumption. However, this method is restricted by the environmental capacity of the surrounding planting land, and the planting environment around the livestock and poultry breeding area is often insufficient. In order to accommodate the generated waste, a large amount of direct dumping or direct discharge will be generated; the second is to use composting, although composting can kill most of the germs at high temperatures to make livestock and poultry manure harmless, and at the same time humify to obtain green fertilizers, However, due to the low quality of stacked resource technology products, it is greatly restricted by the soil utilization methods and seasons around the breeding grounds, and it is difficult to form a commercial utilization path. At the same time, the composting treatment takes a long time and the processing capacity is often very limited, which cannot meet the needs of the rapid breeding industry. development requirements

[0004] The waste from livestock and poultry farming is extensive and large, and the existing treatment methods obviously cannot meet the requirements of harmless treatment, comprehensive utilization and protection of the ecological environment. Waste forms effective harmless treatment, so look for a high-value commercial utilization of livestock and poultry farming waste to make useful green organic fertilizer products, and conduct harmless treatment of discharged sewage to make it qualified for discharge, It is a problem to be solved at present

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