【摘要】 试验研究了沼液和NaOH用于药渣堆沤预处理对发酵过程的影响,以及接种量、pH值对于产气量的影响。结果表明:药渣经过沼液堆沤预处理后即可在较短的时间内高效发酵产沼气,发酵高峰为第2~10天,此阶段产气为总产气量的95%以上;以秸秆沼液预处理后的药渣产气量最高,为11 940 mL,原料产气率为54.4L/kg干药渣。药渣发酵过程中无需添加畜禽粪便调节碳氮比,秸秆沼液中驯化富集的利于秸秆类物质分解的微生物可大大提高药渣的降解率。NaOH预处理可显著提高药渣的产气潜力,发酵持久且总产气量高。以质量分数5%的NaOH预处理10 d,原料(干药渣)产气率达196.8 L/kg。更多还原

【Abstract】 Experiment studied how the traditional Chinese herbal residues to anaerobic ferment and produce biogas after compost pretreatment with biogas slurry and NaOH,and the influences of inoculumsize,pH value on the biogas production were studied.The results showed that:the herbal residue can efficient fermentation biogas within a short time after biogas slurry composting pretreatment;the fermentation peak wasof 2 ~10 days,the gas production in this phase are for more than 95% of the total gas production;during thetrial period the residue with the straw biogas slurry pretreatment produced the highest biogas,up to 11 940 mL,and raw materials gas production rate is 54.4 L/kg dry residue.It is not necessary to adjust C/N by adding animal manure in the fermentation process of residue,straw biogas slurry domesticated enrichment conducive to the microorganisms of decomposition of the straw material can greatly enhance the degradation rate of the residues.NaOH pretreatment could significantly improve the potential for gas production of the residues,fermentation lasting and higher total biogas yield.After 10 d’s pretreatment with 5%NaOH,raw materials gas production rate is of the 196.8 L/kg dry residue.更多还原