Preparation method of aquaculture fish fertilizer
An aquaculture and fish fertilizer technology, applied in the field of aquaculture technology, can solve the problems of garbage deposition to the bottom, endanger fish health, poor water solubility, etc., and achieve the effects of less pollution, improved appetite, and low cost
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Embodiment 1
[0023] A preparation method of fish fertilizer for aquaculture, comprising:
[0024] Step 1. Take the rapeseed cake, soak it with ferrous sulfate solution with a concentration of 10g / L for 40 minutes, drain until the relative humidity is 40%, first inoculate Aspergillus niger and ferment for 5 days, then inoculate anaerobic photosynthetic bacteria for 5 days , to obtain fermented rapeseed cake;
[0025] Step 2. Put white wine in the steamer, put the fermented rapeseed cake on the steamer, close the steamer, heat the white wine to boil and keep it for 3 hours, cool down, collect the white wine and fermented rapeseed cake;
[0026] Step 3. Take the fermented rapeseed cake obtained in Step 2, mix it with 3 times the volume of ethanol solution, and add sodium chloride, soak it at 30°C for 20 hours, filter, and take the filtrate; wherein, during the soaking process, use 20kHz Ultrasound and power density of 200mW / cm 2 Microwaves are irradiated alternately, the time of each ultras...
Embodiment 2
[0035] A preparation method of fish fertilizer for aquaculture, comprising:
[0036] Step 1. Take the rapeseed cake, soak it with a ferrous sulfate solution with a concentration of 10g / L for 50 minutes, drain it until the relative humidity is 40%, first inoculate it with Aspergillus niger and ferment it for 7 days, then inoculate it with anaerobic photosynthetic bacteria and ferment it for 7 days , to obtain fermented rapeseed cake;
[0037] Step 2. Put white wine in the steamer, put the fermented rapeseed cake on the steamer, close the steamer, heat the white wine to boil and keep it for 4 hours, cool down, collect the white wine and fermented rapeseed cake;
[0038] Step 3: Take the fermented rapeseed cake obtained in Step 2, mix it with 3 times the volume of ethanol solution, and add sodium chloride, soak it at 40°C for 24 hours, filter, and take the filtrate; wherein, during the soaking process, use 20kHz Ultrasound and power density of 200mW / cm 2 Microwaves are irradiat...
Embodiment 3
[0047] A preparation method of fish fertilizer for aquaculture, comprising:
[0048] Step 1. Take the rapeseed cake, soak it in ferrous sulfate solution with a concentration of 10g / L for 45 minutes, drain until the relative humidity is 40%, first inoculate Aspergillus niger and ferment for 6 days, then inoculate anaerobic photosynthetic bacteria for 6 days , to obtain fermented rapeseed cake;
[0049] Step 2. Put white wine in the steamer, put the fermented rapeseed cake on the steamer, close the steamer, heat the white wine to boil and keep it for 3 hours, cool down, collect the white wine and fermented rapeseed cake;
[0050] Step 3. Take the fermented rapeseed cake obtained in Step 2, mix it with 3 times the volume of ethanol solution, add sodium chloride, soak it at 35°C for 22 hours, filter, and take the filtrate; wherein, during the soaking process, use 20kHz Ultrasound and power density of 200mW / cm 2 Microwaves are irradiated alternately, the time of each ultrasonic i...
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