厌氧脂质通过酸化和甲烷化进行降解。

Anaerobic lipid degradation through acidification and methanization.

机构信息

Korea Institute of Science and Technology, Seoul, Korea.

出版信息

J Microbiol Biotechnol. 2010 Jan;20(1):179-86.

PMID:20134250

Abstract

In biological wastewater treatment high lipid concentration is known to inhibit microorganisms and cause active biomass flotation. To reduce lipid inhibition, a two-phase anaerobic system, consisting of an anaerobic sequencing batch reactor (ASBR) and an upflow anaerobic sludge blanket (UASB) reactor, was applied to synthetic dairy wastewater. During 153 days of operation, the two-phase system showed stable performance in lipid degradation. In the ASBR, a 13% lipid removal efficiency and 10% double bond removal efficiency were maintained. In the UASB, the chemical oxygen demand (COD), lipid and volatile fatty acid (VFA) removal efficiencies were more than 80%, 70% and 95%, respectively, up to organic loading rate 6.5 g COD/L/day. There were no operational problems such as serious scum formation or sludge washout. Protein degradation occurred prior to degradation during acidogenesis.

摘要

在生物废水处理中，高浓度的油脂会抑制微生物的生长，并导致活性生物量浮升。为了减少油脂抑制，采用两相厌氧系统，包括厌氧序批式反应器（ASBR）和上流式厌氧污泥床（UASB）反应器，处理合成乳制品废水。在 153 天的运行过程中，两相系统在油脂降解方面表现出稳定的性能。在 ASBR 中，保持了 13%的油脂去除效率和 10%的双键去除效率。在 UASB 中，化学需氧量（COD）、油脂和挥发性脂肪酸（VFA）的去除效率分别超过 80%、70%和 95%，有机负荷率高达 6.5 g COD/L/天。没有出现严重的浮渣形成或污泥流失等操作问题。在产酸阶段，蛋白质降解先于降解发生。