Abstract:

Bioaugmentation technology contributes to overcoming the adverse factors such as complex substrate types or negative environmental conditions in anaerobic digestion process, so it has been favored by researchers for years. Based on the types of bioaugmentation agent, the effects of bacteria-augmentation, fungi-augmentation, archaea-augmentation, syntrophic microorganism-augmentation and bio-enzymes-augmentation on the performance of anaerobic digestion were discussed. On this basis, the applications of bioaugmentation technology in lignocellulose substrates, ammonia-nitrogen/propionic acid-inhibited wastewater and refractory organic matters digestions were reviewed. Finally, the effects of attachment bioaugmentation and multi-stage bioaugmentation were discussed. Considerable researches have shown that bioaugmentation technology has a significant effect on promoting anaerobic digestion performance, while some studies have not achieved efficient results. The selection of bioaugmentation agents is the key to this strategy. The effects of bioaugmentation would be stabilized via building the microorganisms’ synergistic relationship or strengthening the enzymes’ stability in the system. In addition, the application of bioaugmentation technology in wastewater anaerobic treatment will be further expanded by choosing suitable attachment carriers and adding times.

Key words: bioaugmentation, anaerobic digestion, microbial, bio-enzymes, biogas

摘要：

将生物强化技术应用到厌氧消化过程中，可克服复杂底物类型或消极环境条件等不利因素，因而近年来备受研究者的青睐。本文从生物强化制剂的类型出发，阐述了细菌强化、真菌强化、古菌强化、互营微生物强化和生物酶强化对厌氧消化特性的影响，并在此基础上回顾了生物强化技术在木质纤维素类底物、受氨氮/丙酸抑制类废水和难降解有机物消化中的应用，最后讨论了附着型强化方式和多段式强化方式对生物强化技术的影响。大量研究表明生物强化技术具有显著促进厌氧消化特性的积极影响，但在部分研究中并未得到良好成效，生物强化制剂的选择是该技术的关键所在。利用互营微生物的协同代谢或提高生物酶在系统中的稳定性将稳固生物强化技术的作用。此外，选择合适的附着载体和投加策略将进一步拓展生物强化技术在废水厌氧处理中的应用。

关键词: 生物强化, 厌氧消化, 菌群, 生物酶, 生物气