Method for producing methane through anaerobic fermentation of waste of vegetables and fruits
An anaerobic fermentation and biogas production technology, which is applied in the direction of fermentation and waste fuel, can solve the problems of vegetable and fruit waste polluting the environment, lack of raw materials for biogas tanks without farmers, etc. The effect of high gas efficiency
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Embodiment 1
[0037] Example 1: 30 cubic household biogas digesters, autumn
[0038] Vegetable and fruit waste raw materials are discarded cabbage, rapeseed leafy vegetables collected in the vegetable market, and melon and fruit vegetable waste such as tomatoes and eggplants.
[0039] A method for producing biogas by anaerobic fermentation using vegetable and fruit waste as raw materials, the steps are as follows:
[0040] (1) Sorting and crushing the vegetable and fruit waste raw materials, cutting the leafy vegetables into 3-5cm in length, and cutting the solanaceous vegetables into 3-5cm in particle size.
[0041] (2) Submerge the crushed vegetable and fruit waste raw materials with biogas slurry for 10 days of soaking pretreatment, during which they are turned twice a day. Then, add plant ash to adjust the pH value at 7.8.
[0042] (3) Put the raw materials treated in step (2) into a 30 cubic meter household biogas digester, the raw material dosage is 3000 kg, and add 3 cubic meters o...
Embodiment 2
[0045] Example 2: 10 cubic household biogas digesters in summer
[0046] Vegetable and fruit waste raw materials are discarded rotten watermelon, melon peel, etc. in the melon farm.
[0047] A method for producing biogas by anaerobic fermentation using vegetable and fruit waste as raw materials, the steps are as follows:
[0048] (1) Cut or mash the discarded watermelon and melon rind into a particle size of 3-5 cm.
[0049] (2) Submerge the crushed waste raw materials in step (1) with biogas slurry for 7 days of soaking pretreatment, during which they are stirred twice a day. Then, add plant ash to adjust the pH value at 8.0.
[0050] (3) Put the raw materials treated in step (2) into a 10 cubic meter household biogas digester, the raw material dosage is 1000 kg, and add 1 cubic meter of biogas slurry into the biogas digester for the first time as an inoculum. The biogas slurry is taken from normal fermentation The upper biogas slurry in the biogas digester that uses lives...
Embodiment 3
[0053] Example 3: 300 cubic anaerobic reactors throughout the year
[0054] Vegetable and fruit waste raw materials are vegetable scraps produced daily by condiment factories, including onion skins, garlic skins, parsley, peppers, etc.
[0055] A method for producing biogas by anaerobic fermentation using vegetable and fruit waste as raw materials, the steps are as follows:
[0056] (1) Crushing the vegetable and fruit waste raw materials and cutting them into lengths of 3-5 cm.
[0057] (2) Submerge the crushed vegetable and fruit waste raw materials with biogas slurry in the storage tank, and the retting time can be adjusted according to the season. Carry out soaking pretreatment for 10 days, during which time it is turned twice a day. Then, add plant ash to adjust the pH value at 8.0.
[0058] (3) Put the raw materials treated in step (2) and the production waste water in the factory into the acidification adjustment tank to adjust the mixture TS to 10%.
[0059] (4) Pu...
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