| 黄红辉,王德汉,罗子锋,尚卫辉.生物质飞灰对餐厨垃圾两相厌氧消化的影响[J].农业环境科学学报,2018,37(6):1277-1283. |
| 生物质飞灰对餐厨垃圾两相厌氧消化的影响 |
| Effect of biomass fly ash addition on methane production in two-phase anaerobic digestion of food waste |
| 投稿时间：2017-11-02 |
| DOI：10.11654/jaes.2017-1518 |
| 中文关键词: 餐厨垃圾 两相厌氧消化 生物质飞灰 有机负荷 |
| 英文关键词: food waste two-phase anaerobic digestion biomass fly ash organic loading rate |
| 基金项目:广东省农业发展和农村工作专项资金项目（2017LM4169，2017LM2149）；广东省科技计划项目（2017A090905034） |
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| 摘要点击次数: 1911 |
| 全文下载次数: 2005 |
| 中文摘要: |
| 为解决餐厨垃圾在厌氧消化过程中的酸抑制问题，并为生物质飞灰提供新的资源化利用途径，在产酸相中添加不同比例的飞灰，研究了生物质飞灰对餐厨垃圾中温两相厌氧消化过程中产酸和产气的影响。结果表明：添加生物质飞灰可以提高酸化相的pH值，促进餐厨垃圾酸化，添加3%的生物质飞灰，产酸相的挥发性脂肪酸（VFA）的平均浓度为9 845.45 mg·L-1，比空白处理（CK）提高了49.66%，差异显著；添加3%生物质飞灰处理的产甲烷相更稳定，产气效果更好，累积产气量为27.43 L，比0、1%、4%和5%的飞灰添加比例分别高了25.15%、13.70%、4.34%和6.55%；添加3%生物质飞灰处理的平均负荷产气量为490.33 mL·g VS-1，比0、1%、4%和5%的飞灰添加比例平均值分别提高了22.49%、12.35%、6.36%和8.22%。研究表明，添加生物质飞灰有助于促进餐厨垃圾酸化和提高产甲烷相的产气量；在高有机负荷的时候，添加生物质飞灰有助于提高系统运行的稳定性。 |
| 英文摘要: |
| Limitations on the traditional utilization of biomass fly ash(BFA) in agriculture have been noticed as a long-standing issue. A new approach to reusing BFA is required. Additionally, the accumulation of volatile fatty acids(VFAs) occurring in the sole food waste anaerobic digestion process frequently made digestion fail. This paper focused on the performance of anaerobic digestion(AD) of food waste by adding BFA in a two-phase process at(35±1)℃. Varied loads of BFA were added into the acidogenic reactor. The results showed that BFA could significantly accelerate the acidification and increase the pH value in the acidogenic reactor. The VFA concentration in the acidogenic reactor with 3% BFA was 9 845.45 mg·L-1, increasing by 49.66% compared to the control reactor. The total methane yield in the AD process with 3% BFA was 490.33 mL·g-1 VS, which was 22.49%, 12.35%, 6.36%, and 8.22% higher than that in the digestion system loading with 0%, 1%, 4%, and 5% BFA, respectively. This work indicates that BFA could accelerate the acidification in the acidogenic phase and increase the methane yield in the methanogenic phase. It could be helpful to prevent short-circuiting in current AD processes with high organic loads. |
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