Here, the enhancement effect and mechanism of MoO₃ and silicomolybdic acid (SiMo₁₂) on perchlorate bioreduction were investigated. The bioreduction rates of perchlorate at 36 h were enhanced 1.92 and 1.33-fold by SiMo₁₂ and MoO_3. According to electrochemical tests, SiMo₁₂ and MoO₃ improved the electrochemical activity and reduced the resistance, demonstrating that the electron transfer was accelerated. The secretion of intracellular cytochrome c (Cyt-c) was increased by 1.64-fold in SiMo₁₂ replenished system, while was not increased in MoO₃ replenished system. In addition, the secretion of membrane Cyt-c was increased by 2.05 and 1.58-fold in SiMo₁₂ replenished system and MoO₃ replenished system. The secretion of extracellular polymeric substance was enhanced 1.72-fold by SiMo₁₂, while it was not enhanced by MoO₃. The perchlorate reductase A (PcrA) in perchlorate reductase (Pcr) was promoted 1.41 and 1.21-fold by SiMo₁₂ and MoO₃. The mRNA reverse expression levels of perchlorate reductase O (PcrO) and perchlorate reductase Q (PcrQ) were increased by SiMo₁₂, while were not affected by MoO₃. This work provided a reliable strategy for accelerating the perchlorate reductase in wastewater bio-treatment.

_{在此，研究了MoO 3}和硅钼酸(SiMo ₁₂ )对高氯酸盐生物还原的增强作用和机制。_{SiMo 12 和MoO 3 使高氯酸盐在36 h的生物还原率提高了1.92和1.33倍。根据电化学测试，SiMo 12}和_{MoO 3}提高 了电化学_活性并_降低了电阻，表明电子转移得到了加速。细胞内细胞色素c (Cyt- c ) 的分泌在 SiMo ₁₂补充系统中增加了 1.64 倍，而在 MoO _{3中没有增加} 补充系统。此外，在SiMo ₁₂补充系统和MoO _{3补充系统中膜Cyt-} c的分泌增加了2.05和1.58倍。_{SiMo 12}使细胞外聚合物的分泌增加1.72倍，而MoO ₃则没有增加。高氯酸还原酶(Pcr)中的高氯酸还原酶A(PcrA)被SiMo ₁₂和MoO ₃促进了1.41和1.21倍。_{SiMo 12}增加高氯酸还原酶O（PcrO）和高氯酸还原酶Q（PcrQ）的mRNA逆表达水平，而不受MoO _3影响  . 这项工作为加速废水生物处理中的高氯酸盐还原酶提供了可靠的策略。