What are the models and equipment for "resource treatment of livestock manure"

Several methods of scientific treatment of pig manure

Full collection and returning of feces to field mode

The fecal sewage generated by pig farms is collected centrally and stored in oxidation ponds, which are divided into open and film-covered types. Feces are stored in oxidation tanks for harmless treatment and used in farmland during fertilization season.

The main advantages are: the construction cost of fecal collection, treatment and storage facilities is low, and the cost of treatment and utilization is also low; The feces and sewage are all collected, and the nutrient utilization rate is high.

Main disadvantages: the storage period of feces is generally more than half a year, which requires enough land to build storage facilities for oxidation ponds; The fertilization period is relatively concentrated, which requires professional mixing equipment, fertilization machinery and farmland application pipe network; The long-distance transportation of feces is expensive and can only be used within a certain range.

Scope of application: It is suitable for pig farm's water bubble dung process, and the total solid content of dung is less than15%; Farmland that matches the amount of nutrients in manure is needed.

Utilization mode of solid fertilizer compost

The solid manure from pig farms is mainly used, and after aerobic composting, organic fertilizer is used or produced in local farmland.

Main advantages: high aerobic fermentation temperature, thorough harmless treatment of feces and short fermentation period; Composting increases the added value of feces.

Main disadvantages: aerobic composting process is easy to produce a lot of odor.

Scope of application: Suitable for farms with only solid fertilizer and no sewage.

Ectopic fermentation bed mode

On the basis of traditional fermentation bed culture, the padding is not in direct contact with pigs, and the pigsty is free from washing. Feces and urine enter the lower padding through the leaky floor or are transferred to the fermentation tank with padding outside the shed for fermentation decomposition and harmless treatment. After a period of time, feces and urine can be directly used as organic fertilizers in farmland.

Main advantages: no sewage is generated in the feeding process, and the treatment cost is low.

Main disadvantages: it is difficult to promote the purchase of padding in a large area; The mixed water content of feces and urine is high, and the fermentation decomposition time is long, so the use in cold areas is limited; The construction cost of elevated fermentation bed pigsty is high.

Scope of application: it is mainly suitable for pig farms with limited farmland in southern water network areas, in which outdoor fermentation beds are suitable for farms with an annual output of 1000 -2000, and overhead fermentation beds are suitable for large-scale farms.

Method for producing organic fertilizer by fermenting pig manure with Nongshengle microbial starter;

1) Fermentation raw materials: such as chaff, weeds, human and animal manure, crop straw (chopped), stems and leaves, sawdust, edible fungus substrate residue and cake, etc.

2) Tools: mixer; Plastic container or cement pool (or plastic film on the pit); Plastic film; Crusher (common agricultural type); Shovel.

3) Fermentation bacteria: Nongshengle microbial starter.

4) Proportion: chaff, weeds, human, livestock, poultry manure, crop straw (chopped), stems and leaves, sawdust, edible fungus substrate residue and cake. 200kg material: Nongshengle microbial starter 1kg.

5) Operating procedures:

(1) Prepare 200 kilograms of fermentation raw materials in proportion as fermentation raw materials for later use;

② Pour 1 kg Nongshengle microbial starter into 50 kg water, dilute and stir evenly, and the diluted water is preferably well water or river water. If it is tap water, please leave it for 24 hours before using it; It is better to dissolve some brown sugar in it properly.

(3) If there is a stirrer, the fermentation raw materials can be stirred for 2 minutes, and then the diluent of the starter is poured and stirred for 6 minutes; No stirrer: stir with a shovel according to the principle from less to more, that is, first pour the diluted bacterial liquid into a small amount of fermentation raw materials and stir evenly until there is no caking, and then pour the stirred small amount of fermentation raw materials into the remaining fermentation raw materials and stir evenly until there is no caking; (Note: Increase or decrease the amount of diluted water according to the degree of dryness and wetness of fermentation raw materials, and use diluted bacterial liquid.

Water accounts for about 40% of the fermentation raw materials, and it is kneaded into a ball by hand. If you see water through your fingers but don't drip, it's better to let go. Note: Too much water is easy to sour, and too little fermentation is not complete. If the fermentation material is wet, the dilution water should be reduced. )

(4) The mixed fermentation raw materials are put into a plastic container or cement pool (or plastic film in the pit), finally packed and compacted, and sealed with plastic film after exhausting. The suitable temperature is 25-35℃, and the fermentation lasts for 5- 10 days (usually 4 days in summer, 7 days in spring and autumn, and 0/0 days in winter). Pay attention to the control of temperature and time.