化工进展 ›› 2024, Vol. 43 ›› Issue (12): 7018-7024.DOI: 10.16085/j.issn.1000-6613.2023-1974

• 资源与环境化工 • 上一篇    

餐厨垃圾生物减量菌种筛选及加菌方式优化

邵毅恒1,2(), 杨宁2, 赵玥2, 李保国1(), 刘莉2,3()   

  1. 1.上海理工大学健康科学与工程学院,上海 200093
    2.中国科学院上海高等研究院,上海 201210
    3.上海有机固废生物转化工程技术研究中心,上海 200241
  • 收稿日期:2023-11-13 修回日期:2023-12-21 出版日期:2024-12-15 发布日期:2025-01-11
  • 通讯作者: 李保国,刘莉
  • 作者简介:邵毅恒(1998—),男,硕士研究生,研究方向为有机固废生物转化。E-mail: 1483107004@qq.com
  • 基金资助:
    上海市科技计划(21DZ1209400);上海市浦东新区科技发展基金(PKJ2021-C02)

Screening of food waste biodegradation bacteria and optimization of inoculation methods

SHAO Yiheng1,2(), YANG Ning2, ZHAO Yue2, LI Baoguo1(), LIU Li2,3()   

  1. 1.School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
    2.Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
    3.Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai 200241, China
  • Received:2023-11-13 Revised:2023-12-21 Online:2024-12-15 Published:2025-01-11
  • Contact: LI Baoguo, LIU Li

摘要:

餐厨垃圾中含水率与有机物含量高,若处置不当极易造成环境污染。生物减量技术能有效降低餐厨垃圾中水分与有机物,减轻后期处置压力,达到减量化的目的。为提高餐厨垃圾生物减量效率,通过研究菌株生长特性以及单菌餐厨垃圾生物减量实验,从实验室前期研究筛得的10株菌中筛选出4株高效降解餐厨垃圾菌制得复配菌剂,以生物强化的方式加入餐厨垃圾的自产热降解体系中,可使反应高温期提前1天到达,挥发性固体去除率(VSR)提高6.72%~25.82%。并通过分段加菌进一步加速了反应进程,VSR相较于一次性加菌提高了3.87%,研究表明分段加菌方式更适用于餐厨垃圾自产热降解反应。

关键词: 餐厨垃圾, 生物减量, 降解, 分段加菌, 优化

Abstract:

Due to high moisture and organic matter content, improper disposal of food waste can easily cause environmental pollution. Biodegradation can effectively reduce the moisture and organic matter in food waste, reduce the pressure of post-disposal, and achieve the purpose of minimization. In order to further improve the efficiency of food waste biodegradation, by studying the growth characteristics of bacteria and single-bacterial biodegradation experiment of food waste, 4 strains of highly efficient degrading bacteria were screened from the existing 10 in the laboratory to produce a compound bacterial agent, which was added into the autothermal degradation system of food waste through bio-augmentation, so that the high-temperature period could be reached 1d earlier, and the volatile solids removal rate was increased by 6.72%—25.82%. Moreover, the reaction process was further accelerated by staged inoculation of bacteria, with a 3.87% increase in VSR compared with one-time inoculation method, which proved that the staged inoculation of bacterial method was more suitable for the autothermal degradation of food waste.

Key words: food waste, biodegradation, degradation, staged inoculation of bacteria, optimization

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