CAJ | 학술논문

采用沼液回流装置，将发酵后的沼液回流至厌氧发酵装置中，并与新鲜牛粪混合，进行不同回流比率的高温厌氧发酵试验，研究沼液回流对厌氧发酵产气性能的影响。结果表明，沼液回流对牛粪高温厌氧发酵产气性能影响显著，对pH和氨氮的影响较小。当回流比率为60%时，日均产气量可达109.3 L/d，与未进行沼液回流的对照组相比，提高了20.8%。相对较低的沼液回流比率，对系统的COD去除效果影响不大；相对较高的回流比率，影响COD的去除。当回流比率达到100%时，COD的去除率相对于对照组减少了11%。
채용소액회류장치，장발효후적소액회류지염양발효장치중，병여신선우분혼합，진행불동회류비솔적고온염양발효시험，연구소액회류대염양발효산기성능적영향。결과표명，소액회류대우분고온염양발효산기성능영향현저，대pH화안담적영향교소。당회류비솔위60%시，일균산기량가체109.3 L/d，여미진행소액회류적대조조상비，제고료20.8%。상대교저적소액회류비솔，대계통적COD거제효과영향불대；상대교고적회류비솔，영향COD적거제。당회류비솔체도100%시，COD적거제솔상대우대조조감소료11%。
Reflux device using biogas, the biogas reflux after fermentation to anaerobic fermentation device,and is used for high-temperature anaerobic fermentation experiments under different reflux ratios with fresh cow dung, study on the impact of the properties of anaerobic fermentation to produce biogas under biogas slurry reflux. The results showed,biogas slurry reflux had a great effect on performance of cow dung high temperature anaerobic fermentation to produce biogas, but it has less effect on the pH and ammonia nitrogen.When the reflux ratio is 60%, biogas production reaches to 109.3 L/d on average, and increased by 20.8 %compared to control group with noreturn of biogas slurry Less than 60 %of the biogas slurry reflux ratio has a little effects on the COD removal efficiency of the system, but relatively high reflux ratio affect on removal of COD, when the reflux ratio reached 100%, the removal rate of COD decreased by 11%compared with the control group.