According to the actual situation and scale of pig farms, there are three different configurations of organic fertilizer production lines that can be selected: high, medium, and low. Large fertilizer factories need to adopt a complete set of production configurations, and the finished product appearance and nutrient content can meet market requirements, which has a significant advantage in promoting finished organic fertilizers. Low to medium configuration organic fertilizer production lines are suitable for small and medium-sized fertilizer factories. The sales scope of finished organic fertilizers is limited to nearby areas, and some processes in the organic fertilizer production process need to be manually completed.

Raising a pig produces an average of 1.1 tons of feces and 1.1 tons of urine per year.

The amount of feces produced by pigs is related to their type, age, body weight, feed intake, and water intake. Pigs of different types, weights, and ages produce varying amounts of feces. Assuming the moisture content of feces is 90.8%, pregnant sows and boars with restricted feeding produce less feces.

1. Cultivate piglets

Pig weight (kg): 16

Daily fecal production per pig (kg): 1.3

Annual fecal production per pig (kg): 475

2. Growing pigs

Pig weight (kg): 30

Daily fecal production per pig (kg): 2.5

Annual fecal production per pig (kg): 912

3. Pre fattening pigs

Pig weight (kg): 68

Daily fecal production per pig (kg): 5.7

Annual fecal production per pig (kg): 2080

4. Late stage fattening pigs

Pig weight (kg): 90

Daily fecal production per pig (kg): 7.6

Annual fecal production per pig (kg): 2774

5. Pregnant sows

Pig weight (kg): 125

Daily fecal production per pig (kg): 10.5

Annual fecal production per pig (kg): 3833

6. Lactating sow

Pig weight (kg): 170

Daily fecal production per pig (kg): 15

Annual fecal production per pig (kg): 5475

7. Boar

Pig weight (kg): 160

Daily fecal production per pig (kg): 13.4

Annual fecal production per pig (kg): 4890

The investment scale and product design of the bio organic fertilizer production line equipment need to be formulated based on the following conditions: characteristics of raw material resources, local soil conditions, local planting structure and main crop varieties, comprehensive consideration of local resources, market capacity, and market coverage radius.

Generally, small newly-built factories have an annual output of 10000 tons (1.5-2.5 tons/hour), 20000 tons (2.5-3.5 tons/hour), and 30000 tons (4.5-6 tons/hour), while medium-sized factories have an annual output of 30000 to 50000 tons and large factories have an annual output of 50000 to 100000 tons. The investment scale and product scheme design need to be formulated based on the characteristics of raw material resources, local soil conditions, local planting structure and main crop varieties, factory site conditions, production automation level, and other conditions.

Production process of pig manure organic fertilizer:

A general bio organic fertilizer production line mainly consists of a fermentation system, a drying system, a deodorization and dust removal system, a crushing system, a batching system, a mixing system, a granulation system, a screening system, and a finished product packaging system. The construction scale of bio organic fertilizer equipment configuration is generally 5000 to 100000 tons per year. We need to comprehensively consider the local resources, market capacity, and market coverage.