System for quickly converting biomass into gas-liquid-solid fertilizer

Abstract

The invention discloses a system for quickly converting biomass into gas-liquid-solid fertilizer. The system consists of an anaerobic fermentation tank and a biogas slurry and biogas residue tank, thefermentation tank can meet the requirements of batch type, intermittent type and continuous type anaerobic fermentation, waste vegetable waste and a small amount of additives rich in N, P and K elements are used as fermentation raw materials, the anaerobic fermentation process is promoted, the total nutrient content of the feed liquid is improved, biogas generated by fermentation is quickly converted into light energy, heat energy and CO2 gas fertilizer in a manner of lightening a biogas lamp, feed liquid discharged from an overflow port of the fermentation tank is subjected to aerobic treatment in the biogas slurry and biogas residue tank in a hot air introduction mode, the degradation rate of BOD and COD is effectively increased, the feed liquid is rapidly converted into liquid fertilizer with high decomposition degree, and discharged biogas residues can be directly used as solid fertilizer after fermentation is finished. Meanwhile, the PV / T system converts light energy into heat energy and electric energy, provides sufficient heat for the fermentation tank and supplies power required for starting the control box and the water pump. And efficient cyclic utilization of energy resources can be realized.

Description

technical field [0001] The invention relates to the technical field of biogas, in particular to the rapid transformation technology of biomass into gas-liquid-solid-fertilizer. Background technique [0002] Vegetable waste has the characteristics of high water content and rich nutrition. Generally, the solid (dry matter) content in the tail vegetable waste is 8% to 15%, and the organic matter in the dry matter accounts for 80% to 95%. [0003] The traditional way to deal with organic waste is mainly landfill or incineration. Landfill is easy to operate, but usually uses a lot of manpower and material resources, and takes up valuable land resources, and the input cost is getting higher and higher. Incineration can quickly reduce the volume of waste, and the heat generated can be used for thermal power generation, but often causes air pollution problems due to improper incineration conditions and methods. [0004] Anaerobic fermentation technology can degrade the solid wast...

AI Technical Summary

Problems solved by technology

However, due to the high water content in tail vegetables, a large amount of biogas slurry is produced and the utilization rate of biogas slurry is low, and it is easy to be hydrolyzed and acidified during anaerobic fermentation, and the volatile fatty acids produced inhibit the process of methane production

In addition, anaerobic fermentation technology requires a stable heat source for constant temperature heating, and most of the treatment methods have high heat loss and high input costs

[0005] The growth of crops in the greenhouse needs to apply organic fertilizer and carbon dioxide gas fertilizer. The preparation cost of organic fertilizer in the prior art is relatively high. The fermentation of organic fertilizer is not complete after fertilization, and the maturity of fertilizer is low, which is easy to cause adverse effects such as burning seedlings.

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