1.Start-up of a full-scale system for short-cut nitrification and Anammox in treatment of pharmaceutical wastewater.
Shuang DING ; Ping ZHENG ; Zonghe ZHANG ; Huifeng LU ; Meng ZHANG ; Datian WU ; Zegao WU
Chinese Journal of Biotechnology 2014;30(12):1889-1900
In order to broaden the application area of the new nitrogen removal technology, a full-scale system for short-cut nitrification and anaerobic ammonium oxidation (Anammox) was investigated in the nitrogen removal from a strong-ammonium pharmaceutical wastewater. When the influent ammonium concentration was (430.40 ± 55.43) mg/L, ammonia removal efficiency was (81.75 ± 9.10)%. The short-cut nitrification and Anammox system could successfully remove nitrogen from the pharmaceutical wastewater. The start-up of short-cut nitrification system took about 74 d and the nitrite accumulation efficiency was (52.11 ± 9.13)%, the two-step mode using synthetic wastewater and actual wastewater was suitable for the start-up of short-cut nitrification system. The start-up of Anammox system took about 145 d and the maximum volumetric nitrogen removal rate was 6.35 kg N/(m3·d), dozens of times higher than those for the conventional nitrification-denitrification process. The strategy achieving Anammox sludge by self-growth and biocatalyst addition was suitable for the start-up of Anammox system.
Ammonia
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chemistry
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Bioreactors
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Drug Industry
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Nitrification
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Nitrites
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chemistry
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Nitrogen
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chemistry
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Sewage
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microbiology
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Waste Disposal, Fluid
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methods
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Waste Water
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chemistry
2.Diagnostic value of serum miR-1 on acute myocardial infarction
Long ZHANG ; Zonghe QIN ; Wei XU
International Journal of Laboratory Medicine 2018;39(6):693-695
Objective To explore the diagnostic value of miR-1 in acute myocardial infarction(AMI).Meth-ods 148 patients with chest pain in the emergency department of this hospital from February 2013 to Decem-ber 2016 were selected and divided into the AMI group(82 cases)and non-AMI group(66 cases)according to the diagnostic criteria of acute AMI.Contemporaneous 74 healthy persons undergoing physical examination were selected as the healthy control group.The levels of serum miR-1,cardiac troponin I(cTnI)and creatine kinase isoenzyme(CK-MB)were measured in 3 groups.The correlation between miR-1 level with cTnI and CK-MB levels in the AMI group.The sensitivity and specificity of miR-1,cTnI,and CK-MB in the diagnosis of acute AMI were analyzed.Results The serum miR-1,cTnI and CK-MB levels in the AMI group were signifi-cantly higher than those in the non-AMI group,while the serum miR-1,cTnI and CK-MB levels in the non-AMI group were higher than those in the healthy control group,the difference among 3 groups was statistical-ly significant(P<0.05);the miR-1 level was positively correlated with cTnI and CK-MB levels in the AMI group(r=0.733,0.779,P<0.05);the receiver operating characteristic curve analysis showed that the sensi-tivity and specificity of miR-1 in the early diagnosis of acute AMI was 90.57% and 97.53% respectively.Con-clusion miR-1 can be used as a new index for early diagnosing acute AMI and assessing severity degree,more-over its sensitivity is higher than cTnI and CK-MB.