【摘要】：為明晰厭氧消化過(guò)程的主要限速步驟,分別以丁酸、乙酸、H_2/CO_2為基質(zhì),在37℃和pH 5.00~9.00條件下對(duì)厭氧活性污泥進(jìn)行培養(yǎng),依據(jù)Shelford耐受定律對(duì)食丁酸產(chǎn)氫產(chǎn)乙酸菌(SBOB)、乙酸營(yíng)養(yǎng)型產(chǎn)甲烷菌(ACM)和氫營(yíng)養(yǎng)型產(chǎn)甲烷菌(HTM)的pH值生態(tài)幅及基質(zhì)轉(zhuǎn)化速率進(jìn)行分析.結(jié)果表明,SBOB、ACM和HTM的pH值生態(tài)幅分別為6.19~8.59、5.50~7.74和4.39~9.23,其代謝最適pH值分別為7.39、6.62和6.81.在最適pH值條件下,厭氧活性污泥對(duì)丁酸、乙酸、H_2/CO_2的轉(zhuǎn)化速率分別為0.86、1.04和1.09g CODequ/(g MLVSS·d).可見(jiàn),與產(chǎn)甲烷菌相比,產(chǎn)氫產(chǎn)乙酸菌的pH值生態(tài)幅更窄,基質(zhì)轉(zhuǎn)化速率更慢,對(duì)厭氧消化過(guò)程具有更為顯著的限制作用.
[Abstract]:In order to clarify the main rate-limiting steps of anaerobic digestion, anaerobic activated sludge was cultured at 37 鈩，

本文編號(hào)：2130705