金霉素对猪场废水厌氧消化抑制作用

Inhibitory effect of aureomycin on anaerobic digestion of piggery wastewater

摘要:

为探明抗生素对猪场废水厌氧消化的抑制作用,以金霉素作为抑制剂,采取批次试验的方法,对厌氧消化过程的产甲烷量进行测定.试验结果表明:厌氧污泥降解模拟废水的最大容积产甲烷速率为19.6mL/(L·h);在金霉素抑制下,最大容积产甲烷速率降低了47.4%.在无抗生素的情况下,产甲烷过程是厌氧消化的限速步骤;存在10mg/L金霉素时,水解发酵和产氢产乙酸过程受到较强的抑制,视为厌氧消化的限速步骤.金霉素对猪场废水厌氧消化有较强的抑制作用,为保证厌氧处理的稳定性,应针对水解发酵和产氢产乙酸过程采取相应的强化措施.

Abstract:

In order to investigate the inhibitory effect of antibiotic on anaerobic digestion of piggery wastewater methane production was measured in batch experiment with aureomycin as inhibitor.Results showed that the maximum methane production rate of simulative wastewater was 19.6 mL/(L·h).In the presence of 10 mg/ L of aureomycin,the maximum methane production rate was reduced by 47.4% .The hydrolysis and hydrogen-producing were more inhibited than methane producing process in this experiment,which was supposed to be the sensitive step in anaerobic degradation of piggery wastewater treatment.As aureomycin in piggery wastewater is inhibitory to anaerobic,digestion measures should be taken to strengthen the hydrolysis and hydrogen producing process.