Rancidity-prone waste biogas utilization method based on in-subarea inoculation and quick start
A waste and biogas technology, applied in biological sludge treatment, waste fuel, fermentation, etc., can solve the problems of increased reactors, increased production costs, and difficulty in starting the waste gas production process, and achieves the effect of promoting degradation and avoiding loss.
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[0058] Example 1 - Quick Start of Biogas Utilization of Kitchen Waste
[0059] (1) From the feeding port 12 to the garbage filling area 05, pump the start-up liquid containing nutrients and a small amount of organic matter at one time until it exceeds the liquid level of the discharge pump 13; the solid concentration of the material in the garbage filling area does not exceed 5%.
[0060] (2) Close the self-circulation loop 17 and the discharge 02; control the flow rate of the return pipe 16 with a certain flow rate, and spray it into the microbial inoculum filling area 18 through the distribution pipe 08 to start the microbial inoculum 22 inside the inoculum filling ball 06. Biomass production activity, and the possible residual particulate organic matter inside the scouring bacteria filling ball 06. After more than 10 days of reflux spraying, the domestication and growth of methanogens were completed. For the present invention, it is ensured that the microbial inoculum has ...
Example Embodiment
[0065] Example 2 - Utilization of Biogas of Intermittent Feed MSW
[0066] The raw material for treatment in this embodiment is municipal solid waste.
[0067] (1) MSW should first be sorted, crushed and screened to remove large-sized components (greater than 2cm) and non-biodegradable inert components and impurities, and obtain smaller-sized and more homogeneous rubbish (less than 2cm);
[0068] (2) One-time pump into the garbage filling area 05 to below the liquid level 10; close the discharge 02 and the self-circulation loop 17; the municipal solid waste is hydrolyzed and acidified in the garbage filling area. In this embodiment, the conditions for hydrolysis and acidification are: The pH value is 6~7.5, the temperature is 42℃, the residence time is 3 days, and the operating range of the solid concentration is 25%~35%;
[0069] (3) In an intermittent or semi-continuous manner, control the return pipe 15 at a certain flow rate (flow rate is controlled at 0-0.2m 3 / (m 3d)...
Example Embodiment
[0072] Example 3 - Biogas utilization of continuous feeding fruit and vegetable waste
[0073] The raw material for processing in this embodiment is fruit and vegetable waste.
[0074] (1) Fruit and vegetable waste should first be sorted, crushed and screened to remove large-sized components (greater than 2cm) and non-biodegradable inert components and impurities in the waste to obtain smaller-sized and more homogeneous Garbage (less than 2cm);
[0075] (2) One-time pump into the garbage filling area 05 to below the liquid level 10; close the discharge 02 and the self-circulation loop 17; the fruit and vegetable garbage is hydrolyzed and acidified in the garbage filling area. In this embodiment, the conditions for hydrolysis and acidification are: pH The value of 5.5 to 7, the temperature of 35 ° C, the residence time of 3 days, the operating range of solid concentration is 17% to 25%;
[0076] (3) In an intermittent or semi-continuous manner, control the return pipe 15 at a...
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