To resolve environmental problems associated with rice straw and silage effluent disposal, silage effluent pretreating rice straw for the anaerobic production of volatile fatty acids (VFAs) was investigated. To prevent the lactic acid bacteria in silage effluent from inhibiting anaerobic fermentation, four phenyllactic acid (PLA) levels were set (0, 0.1, 0.3, 0.5 mg/kg). The total VFA yields of treatments pretreated only with silage effluent (CK) were higher than the groups combined with PLA during 15 days fermentation. Compared to PLA treatments, the total VFA of CK increased by 11.4 % ∼ 25.1 % on day 15. The CK showed higher lactic and propionic acid contents and lower pH values (<4.9). The PLA treatments decreased Lactobacillus abundance while increasing bacterial richness and evenness, and acetic and butyric acid contents. These demonstrated silage effluent has the potential to be used as a biological pretreatment for VFA production in anaerobic fermentation.

为了解决与水稻秸秆和青贮饲料废水处理相关的环境问题，研究了青贮饲料废水预处理水稻秸秆以厌氧生产挥发性脂肪酸 (VFAs)。为防止青贮废水中的乳酸菌抑制厌氧发酵，设置了四种苯基乳酸（PLA）水平（0、0.1、0.3、0.5 mg/kg）。在 15 天的发酵过程中，仅用青贮污水 (CK) 预处理的处理的总 VFA 产量高于与 PLA 结合的组。与 PLA 处理相比，CK 的总 VFA 在第 15 天增加了 11.4% ∼ 25.1%。CK 显示出更高的乳酸和丙酸含量以及更低的 pH 值（<4.9）。PLA 处理降低了乳酸菌丰度，同时增加细菌的丰富度和均匀度，以及乙酸和丁酸的含量。这些经证明的青贮饲料废水有可能用作厌氧发酵中 VFA 生产的生物预处理。