Method for using biochar to treat excrement and urine in pig house
A biochar and pig house technology, applied in the field of livestock and poultry breeding, can solve the problems of increasing environmental pollution and disease transmission
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[0016] In the present invention, there is no special limitation on the source of the biochar, and the source of biochar known to those skilled in the art can be used, specifically, commercially available biochar or self-made biochar. In the present invention, the preparation method of described biochar preferably comprises the following steps:
[0017] The carbonized raw material is subjected to pyrolysis carbonization treatment at a temperature of 400-700°C for 4-8 hours to obtain a pyrolysis carbonization product;
[0018] The pyrolysis carbonization product is cooled and crushed to obtain biochar.
[0019] In the present invention, the carbonized raw materials include straw-based carbonized raw materials, wood-based carbonized raw materials or fruit shell-based carbonized raw materials. In the present invention, the straw carbonization raw materials include corn straw, rice straw or sorghum straw; the wood carbonization raw materials include branches of all tree species; t...
Embodiment 1
[0033] The straw raw material was subjected to pyrolysis and carbonization treatment to obtain biochar. The temperature of the pyrolysis and carbonization treatment was 500° C., and the time of carbonization treatment was 6 hours. After the biochar was obtained, the experiment was carried out. According to the sensory evaluation of the testers, the analysis of the odor removal effect in the pig house after the biochar treatment in the excretion area was formulated, and the sensory evaluation standard was carried out according to Table 1. The thickness of biochar laying in the excretion area was 0.5mm, 1mm, 1.5mm and 2mm respectively. The evaluation results of the odor of the pig house are shown in Table 2.
[0034] Table 1 Sensory evaluation criteria for biochar treatment of pig house odor
[0035] Score
odor
80-100
no smell
60-80
Slight odor
40-60
has a slight odor
<40
smells bad
[0036] Table 2 The effect of biochar...
Embodiment 2
[0040] Using the excrement obtained after clearing the solid manure channel in Example 1 as the raw material, the pig manure composting fermentation test was carried out after adding straw and biochar. For each treatment, the C:N ratio of the feces was first adjusted to 25:1 before adding straw and biochar. The particle size of charcoal and straw is 2mm. Treatment 1: pig manure + straw; treatment 2: pig manure + straw + biochar 5%; treatment 3: pig manure + straw + biochar 10%; treatment 4: pig manure + straw + biochar 15% . The composting fermentation conditions are as follows: the moisture content of the compost material is 60%, the carbon-nitrogen ratio is adjusted to 25:1, and the particle size of the material is 2cm. see results figure 1 .
[0041] from figure 1 It can be concluded that after composting, the total nitrogen content of treatment 2, treatment 3 and treatment 4 increased by 6.59%, 8.93% and 9.70% respectively compared with control treatment 1. It can be s...
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