Method for preparing poplar nutritious injection liquid by straw pulp black liquor
A technology for nutrient injection and straw pulp black liquor, applied in the field of fertilizers, can solve problems such as no precedent, lack of attention, etc., and achieve the effects of slow effect, good economic and environmental benefits, and accelerated trunk thickening.
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Embodiment 1
[0038] Lower the temperature of the black liquor to 30°C, add Saccharomyces cerevisiae AS 2.23, the amount added is 1 / 30 of the black liquor volume, mix well, store at room temperature for 5 days, acidify the black liquor to a pH of 9.0, at this time The color of anaerobic black liquor is brownish-yellow and has a sweet smell;
[0039] Separating the bottom sludge of the anaerobic black liquor, slowly and evenly adding 92% sulfuric acid to the supernatant liquid, stirring while adding acid, until the pH value of the black liquor is 6, to obtain acidified anaerobic black liquor;
[0040] Divide the acidified anaerobic black liquor into two parts and put them into the enamel reaction kettle respectively. Add 25% ammonia water to one part. The amount of ammonia water is 5 times the solid content of the anaerobic black liquor. At 2.5Mpa, the amount of compressed air is 10L / min, the reaction time is 3 hours, and then concentrated H 2 SO 4 Adjust the pH value of the reaction produ...
Embodiment 2
[0052] Lower the temperature of the black liquor to 35°C, add Saccharomyces cerevisiae AS 2.24, the amount of which is 1 / 25 of the volume of the black liquor, mix well, store at room temperature for 8 days, and acidify the black liquor to a pH of 8.5. The color of anaerobic black liquor is brownish-yellow and has a sweet smell;
[0053] Separating the bottom sludge of the anaerobic black liquor, slowly and evenly adding 95% sulfuric acid to the supernatant liquid, stirring while adding acid, until the pH value of the black liquor is 7, to obtain acidified anaerobic black liquor;
[0054] Divide the acidified anaerobic black liquor into two equal parts and put them into the enamel reaction kettle respectively. Add 10% ammonia water to one part. The amount of ammonia water is 5 times the solid content of the anaerobic black liquor. At 3.0Mpa, the amount of compressed air is 8L / min, the reaction time is 2.5 hours, then add concentrated H 2 SO 4 Adjust the pH value of the reacti...
Embodiment 3
[0066] Lower the temperature of the black liquor to 45°C, add Saccharomyces cerevisiae AS 2.240, the amount of which is 1 / 20 of the volume of the black liquor, mix well, store at room temperature for 6 days, and acidify the black liquor to a pH of 8. The color of anaerobic black liquor is brownish-yellow and has a sweet smell;
[0067] Separating the bottom sludge of the anaerobic black liquor, slowly and evenly adding 98% sulfuric acid to the supernatant liquid, stirring while adding acid, until the pH value of the black liquor is 6.5, to obtain acidified anaerobic black liquor;
[0068] Divide the acidified anaerobic black liquor into two equal parts and put them into the enamel reaction kettle respectively. Add 30% ammonia water to one part. The amount of ammonia water is 4 times the solid content of the anaerobic black liquor. At 3.2Mpa, the amount of compressed air is 5L / min, the reaction time is 2 hours, and then add concentrated H 2 SO 4 Adjust the pH value of the rea...
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