Anaerobic digestion could make sludge stable and harmless, and the volatile fatty acids (VFAs) produced from it. The objective of this study was to reduced sludge production and realize the resource utilization of VFAs through enhance anaerobic sludge fermentation by adding sulfate reducing bacteria (SRB) under alkaline pH. Under the neutral and alkaline pH, SRB was added into the sludge fermentation liquid with sole stock solution and sterilization treatment respectively, while the liquid without any additives was used as control. The results indicated that obvious increase of the production of VFAs was observed after adding SRB under alkaline pH. And, more protein and polysaccharide were obtained which were the main substrates for the production of VFAs. The concentration of ammonia nitrogen (NH₄⁺-N) and phosphate (PO₄³⁻-P) were also increased with the addition of SRB. So, a high yield production of VFAs could be achieved through the addition of SRB + alkaline pH.

厌氧消化可以使污泥稳定无害，并从中产生挥发性脂肪酸（VFA）。本研究的目的是通过在碱性 pH 下添加硫酸盐还原菌 (SRB) 来增强厌氧污泥发酵，从而减少污泥产量并实现 VFA 的资源利用。在中性和碱性pH条件下，分别在单独原液和杀菌处理的污泥发酵液中加入SRB，以不添加任何添加剂的发酵液作为对照。结果表明，在碱性pH条件下加入SRB后VFAs的产量明显增加。并且，获得了更多的蛋白质和多糖，它们是生产VFA的主要底物。氨氮浓度（NH ₄ ⁺-N) 和磷酸盐 (PO ₄ ^3- -P) 也随着 SRB 的加入而增加。因此，通过添加 SRB + 碱性 pH 可以实现 VFA 的高产率生产。