This paper dealt with non-parallelism between the effect of microbial flocculant (MBF) on sewerage disposal and the flocculation rate, the high flocculation rate doesn’t mean the fine disposal effectiveness, and reve...This paper dealt with non-parallelism between the effect of microbial flocculant (MBF) on sewerage disposal and the flocculation rate, the high flocculation rate doesn’t mean the fine disposal effectiveness, and revealed the problem encountered when the exclusive parameter―flocculation rate is used to evaluate the effect of MBF on sewerage disposal. The results showed that MBF made from different carbon sources have some influence on the effectiveness of sewerage disposal; flocculation rate cannot authentically reflect the status of sewerage disposal. When the exclusive parameter―flocculation rate is used to evaluate the effect of MBF on sewerage disposal, it would be exaggerated, especially in disposing COD-low sewerage. The authors considered that when flocculation rate is used to evaluate the effect of MBF on sewerage disposal, it is better to take COD-removal rate into account.展开更多
The UASB reactor was used to reconstruct leachate treatment project of Beijing Asuwei Waste Sanitary Landfill Site,and the commissioning with the UASB reactor was executed.Water quality indicators were determined in t...The UASB reactor was used to reconstruct leachate treatment project of Beijing Asuwei Waste Sanitary Landfill Site,and the commissioning with the UASB reactor was executed.Water quality indicators were determined in the debugging process,and the results showed that the VFA content in the anaerobic tank was controlled within 600 mg/L,which indicated that the water quality did not have the acidified phenomenon.The COD removal efficiency was 50%approximately and NH_3-N concentration showed as light decline when operation stability in anaerobic system.展开更多
试验研究了竹炭类型、粒径、投加量、微波辐射功率与时间等因素对竹炭吸附-微波辐射法去除糖蜜酒精废水中COD效果的影响。结果表明:高温竹炭的吸附效果优于中温竹炭;竹炭粒径越小,废水COD去除效果越好;废水COD去除率随着微波辐射时间与...试验研究了竹炭类型、粒径、投加量、微波辐射功率与时间等因素对竹炭吸附-微波辐射法去除糖蜜酒精废水中COD效果的影响。结果表明:高温竹炭的吸附效果优于中温竹炭;竹炭粒径越小,废水COD去除效果越好;废水COD去除率随着微波辐射时间与功率的增大而增加;废水的初始COD浓度越大,COD去除率越大。正交试验表明(废水用量50 mL、COD初始浓度为540 mg/L):在振荡时间45 m in、竹炭投加量0.5 g、微波功率600 W、辐射时间4 m in时处理的效果最好,此时COD去除率可达84.98%。展开更多
基金Granted by the Funds of Chinese Academy of Sciences for the HundredTalents Program and the National Natural Science Foundation of China(Grant No. NSFC40463001).
文摘This paper dealt with non-parallelism between the effect of microbial flocculant (MBF) on sewerage disposal and the flocculation rate, the high flocculation rate doesn’t mean the fine disposal effectiveness, and revealed the problem encountered when the exclusive parameter―flocculation rate is used to evaluate the effect of MBF on sewerage disposal. The results showed that MBF made from different carbon sources have some influence on the effectiveness of sewerage disposal; flocculation rate cannot authentically reflect the status of sewerage disposal. When the exclusive parameter―flocculation rate is used to evaluate the effect of MBF on sewerage disposal, it would be exaggerated, especially in disposing COD-low sewerage. The authors considered that when flocculation rate is used to evaluate the effect of MBF on sewerage disposal, it is better to take COD-removal rate into account.
文摘The UASB reactor was used to reconstruct leachate treatment project of Beijing Asuwei Waste Sanitary Landfill Site,and the commissioning with the UASB reactor was executed.Water quality indicators were determined in the debugging process,and the results showed that the VFA content in the anaerobic tank was controlled within 600 mg/L,which indicated that the water quality did not have the acidified phenomenon.The COD removal efficiency was 50%approximately and NH_3-N concentration showed as light decline when operation stability in anaerobic system.
文摘试验研究了竹炭类型、粒径、投加量、微波辐射功率与时间等因素对竹炭吸附-微波辐射法去除糖蜜酒精废水中COD效果的影响。结果表明:高温竹炭的吸附效果优于中温竹炭;竹炭粒径越小,废水COD去除效果越好;废水COD去除率随着微波辐射时间与功率的增大而增加;废水的初始COD浓度越大,COD去除率越大。正交试验表明(废水用量50 mL、COD初始浓度为540 mg/L):在振荡时间45 m in、竹炭投加量0.5 g、微波功率600 W、辐射时间4 m in时处理的效果最好,此时COD去除率可达84.98%。