水葫芦制备生物气高效工艺中试研究

在5m3发酵规模探索水葫芦中温厌氧制备生物气的高效工艺发酵,试验表明工艺的发酵起动配方为污泥水∶水葫芦∶猪粪便=4∶3∶0.5,C/N 30,TS 8%,酵补料为100%水葫芦,发酵温度35～45℃,间歇搅拌,pH控制7.7±0.1,其中技术要点包括水葫芦应尽量粉碎均匀,接种醋酸杆菌加快酸化速度,添加尿素补充氮素养分等。

A Pilot Study on High Efficient Biogas Production by Water Hyacinth

The 5m3 high-efficient fermentation test is conducted for biogas production by water hyacinth under mid-temperature anaerobic conditions.It shows that the start-up formula for such fermentation is sludge water∶water hyacinth∶pig feces =4∶3∶0.5,C/N 30,TS 8%,the feed is 100% of water hyacinth,the temperature is between 35-45℃,intermittent mixing,pH at 7.7±0.1.The key technical points lie in thorough crush,facilitated acidification by Acetobactor and adding urea for nitrogen.