Composite biological bacterial fertilizer for petroleum-contaminated soil and preparation method thereof
A technology of complex biological bacteria and oil pollution, applied in the field of fertilizers, can solve the problems of low nutrient absorption, slow crop growth, low economic efficiency, etc., and achieve the effects of promoting degradation, promoting dispersion, and reducing losses
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[0026]Example 1 Compound biological bacterial fertilizer for petroleum contaminated soil
[0027]1. Preparation of modified composite carrier:
[0028]The modified composite carrier is made of soybean meal, rapeseed meal, and nanometer fly ash in a mass ratio of 5:5:2.
[0029]Preparation process: mix soybean meal and rapeseed meal, superfinely pulverize, add 0.5% by mass of phytic acid, stand for 20-25min, add water to prepare a 40w% slurry; then add 3% by mass to the slurry Stearic acid and its mass of 0.1% sodium hexametaphosphate are treated at 80-90° C. for 2 hours and dried to obtain a composite carrier.
[0030]2. Immobilized bacteria
[0031]2.1 Preparation of fixed carrier:
[0032]The fixed carrier is made of inorganic nanoparticles, phosphite, and chitosan at a mass ratio of 0.5:2:10; the inorganic nanoparticles are made of nano Fe3O4、Nano calcium borate is composed of 1:1 mass ratio.
[0033]Preparation process: Put the inorganic nanoparticles into a concentrated sulfuric acid solution for o...
Example Embodiment
[0041]Example 2 Compound biological bacterial fertilizer for petroleum contaminated soil
[0042]1. Preparation of modified composite carrier:
[0043]The modified composite carrier is made of soybean meal, rapeseed meal, and nanometer fly ash in a mass ratio of 5:7:3.
[0044]Preparation process: mix soybean meal and rapeseed meal, superfinely pulverize, add 0.8% by mass of phytic acid, stand for 20-25min, add water to prepare a 45w% slurry; then add 4% by mass to the slurry Stearic acid and its 0.2% sodium hexametaphosphate are treated at 80-90°C for 2.5 hours and dried to obtain a composite carrier.
[0045]2. Immobilized bacteria
[0046]2.1 Preparation of fixed carrier:
[0047]The fixed carrier is made of inorganic nanoparticles, phosphite and chitosan in a mass ratio of 0.8:2.5:12; the inorganic nanoparticles are made of nano-Fe3O4, Nano calcium borate is composed of 1:1 mass ratio.
[0048]Preparation process: Put the inorganic nanoparticles into a concentrated sulfuric acid solution for 40min o...
Example Embodiment
[0056]Example 3 Compound biological bacterial fertilizer for petroleum contaminated soil
[0057]1. Preparation of modified composite carrier:
[0058]The modified composite carrier is made of soybean meal, rapeseed meal, and nanometer fly ash in a mass ratio of 8:5:3.
[0059]Preparation process: mix soybean meal and rapeseed meal, superfinely pulverize, add 1% phytic acid of its mass, stand for 25 minutes, add water to prepare a 50w% slurry; then add 5% of its mass stearin to the slurry The acid and its mass of 0.3% sodium hexametaphosphate are treated at 80-90°C for 3 hours and dried to obtain a composite carrier.
[0060]2. Immobilized bacteria
[0061]2.1 Preparation of fixed carrier:
[0062]The fixed carrier is made of inorganic nanoparticles, phosphite, chitosan in a mass ratio of 1:2:10; the inorganic nanoparticles are made of nano-Fe3O4, Nano calcium borate is composed of 1:1 mass ratio.
[0063]Preparation process: Put the inorganic nanoparticles into a concentrated sulfuric acid solution for...
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