摘要: 在間歇培養(yǎng)條件下,研究了還原型輔酶Ⅱ(NADPH)、乙酰輔酶A(Acetyl Co A)和對氨基苯甲酸(PABA)3種添加劑對污泥厭氧消化性能的影響.結(jié)果表明,3種微生物活性促進劑均能促進污泥厭氧消化產(chǎn)氣.其中,NADPH的促進效果最為顯著,消化第35 d,產(chǎn)甲烷量比對照組高15.90%.在污泥含固率為3%、未調(diào)初始 pH(pH=6.7)和溫度35 ℃的厭氧消化條件下, NADPH的最佳添加量為50 mg·L-1,消化第36 d,污泥累積產(chǎn)甲烷量127.13 mL·g-1 VSS.在含固率3%、初始pH=8.5、溫度55 ℃和NADPH添加量為50 mg·L-1 的工藝條件下,污泥厭氧產(chǎn)氣效果最佳,消化第30 d時累積產(chǎn)甲烷量達158.02 mL·g-1 VSS.
關(guān)鍵詞:
- 污泥 /
- 厭氧消化 /
- 產(chǎn)氣 /
- 添加劑 /
- NADPH
Abstract: This study investigated the effects of different additives(NADPH, Acetyl Co A, PABA)on biogas production in anaerobic digestion system. All the three microbial activity accelerants favored the anaerobic digestion, and NADPH achieved the most effective promotion for methane production. The reactor with NADPH had higher methane production, up to 15.90%, than the control group.Under the anaerobic conditions of 3%solid content, initial pH 6.7 for raw sludge and 35 ℃ digestion temperature, the optimal dosage of NADPH is 50 mg·L-1, and the accumulative methane production achieved 127.13 mL·g-1 VSS after digestion for 36 days. The maximal accumulative methane production achieved 158.02 mL·g-1 VSS under the following conditions: 3% solid content, initial sludge pH 8.5, temperature 55 ℃ and NADPH dosage 50 mg·L-1.
