生物炭改善青霉素菌渣厌氧消化性能

目的 为提高青霉素菌渣厌氧消化性能。方法 在(35±2)℃，采用批式发酵工艺，在不同有机负荷菌渣中添加不同量生物炭进行厌氧消化。结果 添加生物炭，在有机负荷为2%VS和3%VS时，沼气产量比对照提高42.8%以上，甲烷含量比对照提前3~5d达到峰值，恢复pH值至7.0以上的时间明显缩短，VFA下降速度增快，氨氮浓度均在2500mg/L以下，VS去除率提高20%以上。有机负荷为4%VS时，沼气产量比对照提高了175.2%，但系统仍未正常运行。未添加生物炭，有机负荷为3% VS和4%VS时，发酵系统酸化，没有启动成功。结论

Application of biochar to improve anaerobic degradation of Penicillium fermentation residues#br#

Objective To improve the efficiency of anaerobic degradation of penicillin residues. Methods Different amounts of biochars were added in batch anaerobic fermentation at (35±2)℃. Results Adding biochars in the fermentation can make the biogas production increased by 42.8% over the control, the methane content peaked 3~5 days earlier than the control. The time to restore the pH to above 7.0 was significantly shortened. The VFA declined faster, and the ammonia nitrogen concentration below 2500mg/L. The VS removal rate increased by more than 20% when the organic loading were 2% VS and 3% VS. The biogas production increased by 175.2% compared with the control when the organic loading was 4% VS, but the system was still not operating normally. The fermentation system was acidified and did not start successfully when biochars were not added and the organic loading were 3% VS and 4% VS. Conclusion It is further illustrated that the addition of biochar can adjust the acid-base balance, alleviate the inhibition of ammonia nitrogen, increase the organic load of the system, and stabilize the