【摘要】 为了优化蔬菜废弃物厌氧消化工艺，以油麦菜的废弃物为原料，对放置在冷藏（4℃）、冷冻（0℃）、常温中6 d后的原料和现粉碎的原料进行批量发酵实验，发酵温度控制在（35±1）℃。结果表明，将蔬菜废弃物粉碎后，在常温有氧条件下放置6 d后，再进行厌氧消化处理，TS含量减少25%,能起到缓解上层漂浮物结壳的作用；提高产气速率，使产气集中在前6 d,降低能耗，提高处理效率；常温放置6 d后的原料比现粉碎的原料产气率提高了25%,每吨原料大约可以多产沼气2.56 m³,还能明显提高CH₄含量，CH₄含量可以达到64.4%。该工艺能帮助蔬菜废弃物厌氧消化工程提高产气速率和产甲烷量，降低能耗，而且该工艺简单易操作，投资少。更多还原

【Abstract】 In order to optimize the anaerobic digestion process of vegetable waste, the waste of lettuce was used as raw material. The batch fermentation experiments were carried out on the raw materials placed in refrigerated（4 ℃）, frozen（0 ℃）, room temperature after 6 days and the crushed raw materials. The fermentation temperature was controlled at（35±1）℃. The results showed that the TS content was reduced by 25% after the vegetable waste was crushed and placed under aerobic conditions at room temperature for 6 days, which could alleviate the crusting of the upper floating matter. Improve the gas production rate, so that the gas production is concentrated in the first 6 days, reduce energy consumption, improve treatment efficiency; the gas production rate of the raw materials placed at room temperature for 6 days is 25% higher than that of the crushed raw materials. Each ton of raw materials can produce about 2.56 m³ more biogas, and the CH₄ content can be significantly improved, and the CH₄ content can reach 64.4%.The process can help vegetable waste anaerobic digestion project to improve the gas production rate and methane production, reduce energy consumption, and the process is simple and easy to operate, less investment.更多还原