| 张振华,呼世斌,马雯,陈晓飞.牲畜粪便和秸秆混合厌氧发酵的试验研究[J].干旱地区农业研究,2010,28(6):87~90 |
| 牲畜粪便和秸秆混合厌氧发酵的试验研究 |
| Experiment on co-fermentation and anaerobic fermentation of livestock manure and wheat straw |
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| DOI：10.7606/j.issn.1000-7601.2010.06.16 |
| 中文关键词: 牲畜粪便 秸秆 混合发酵 厌氧发酵 |
| 英文关键词:livestock manure straw mixed fermentation anaerobic fernentation |
| 基金项目:西安市科技局“十一五”科技计划项目(陕财办建［2008］504号) |
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| 中文摘要: |
| 以猪粪和麦秆为发酵原料,在实验室自行设计的小型沼气发酵装置上进行了厌氧发酵试验,研究了在物料浓度一定的情况下,不同接种物浓度对反应器启动、pH值、COD、产气量及产气速度的影响。结果表明:接种量高的厌氧反应系统甲烷菌群和产酸菌群会较快地达到平衡,维持系统的pH值在有利于甲烷菌生长的范围内。在物料浓度(6%)一定的条件下,随着接种物浓度的增加,COD去除率、产气速率和产气量增加,但当原料接种量高于30%的试验组启动时间相同,产气量增加不再明显。发酵原料的接种量等于30%为最佳,此时,既不浪费接种物和运行费用,又可以有效地产气。该项研究对牲畜粪便和秸秆资源化利用提供了有益的参考。 |
| 英文摘要: |
| Using pig manure and wheat straw as fermenting materials, an experiment was carried out in a small self-
manufactured biogas ferment device to study the influence of different inoculum densities on reactor start-up, pH-value， COD, biogas production and gas generation rate. The results showed that: microflora of methane and microflora of acid-producing in anaerobic system with a high inoculum concentration would be fast to achieve a balance to maintain pH-value of the system in a range which is conducive to the growth of methane bacteria. Under the condition of definite solids con-centration (6%), as the increase of inoculum density, COD removal rate, gas generation rate and biogas production. But when the treatment group inoculum concentration of material above 30% starts up at the same time, the increase of biogas production is unconspicuous. When the inoculum concentration of fermenting materials equals to 30%, the result is the best. At this time, it not only wastes no inoculation or operating cost, but also produces gas effectively. |
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