生物泥浆反应器生物修复难降解有机物污染土壤的研究进展

Research progress of slurry bioreactor bioremediation of refractory organic matter contaminated soil

生物泥浆反应器因其传质快、条件可控、修复效率高而在生物修复难降解有机物污染物土壤中得到广泛应用。综述了生物泥浆反应器生物修复土壤中难降解有机物所涉及的固液传质、气液传质和生物降解等主要去除机制,总结了3种去除机制的重要性;概括了国内外对生物反应器建模的研究进展,凝练了固液传质、气液传质和生物降解过程的基础模型;确定了生物泥浆反应器的重要参数,包括物理参数、生物参数和操作参数,并概括了各种参数的影响机理及其适宜范围。最后展望了生物泥浆反应器去除难降解有机物未来的研究方向,包括机制研究、微生物菌剂以及应用装备的智能化等。

Slurry bioreactors are widely used in bioremediation of soils polluted by refractory organic matter because of their fast mass transfer,controllable conditions and high remediation efficiency.The main removal mechanisms of solid-liquid mass transfer,gas-liquid mass transfer and biodegradation involved in the bioremediation of refractory organic matter in slurry bioreactor were reviewed,and the importance of three removal mechanisms,namely solid-liquid mass transfer,gas-liquid mass transfer and biodegradation,was summarized.The research progress of bioreactor modeling at home and abroad was summarized,and the basic models of solid-liquid mass transfer,gas-liquid mass transfer and biodegradation processes were formed.The important parameters of the slurry bioreactor were determined,including physical parameters,biological parameters and operating parameters,and the influence mechanism of various parameters and their suitable range were summarized.Finally,the future research directions of slurry bioreactor to remove refractory organic matter were prospected,including mechanism research,microbial agents,and intelligent application equipment.