Analyses of nitrogen metabolism functional microbial community in aerobic tanks of hydrolysis acidification and multistage aerobic process for tannery wastewater / Ding Shaolan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 12 (12/2018)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 12 (12/2018) . - p. 409-417 Titre : Analyses of nitrogen metabolism functional microbial community in aerobic tanks of hydrolysis acidification and multistage aerobic process for tannery wastewater Type de document : texte imprimé Auteurs : Ding Shaolan, Auteur ; Tian Qianqian, Auteur ; Cao Kai ; Li Hua ; Yang Jianjun Année de publication : 2018 Article en page(s) : p. 409-417 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Eaux usées -- Analyse Eaux usées -- Décontamination Hydrolyse Microbiologie industrielle Tannage -- Déchets Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The actual tannery wastewater was treated by hydrolysis acidification and multistage aerobic process (A/O3). The growth status of microorganisms in three aerobic tanks was measured with the Biolog microplate method to reflect the ability of metabolizing nitrogen source. In the three aerobic tanks, the functional differences between different nitrogen source metabolism microbial communities in three aerobic tanks were compared and analyzed. The results of the present study have shown that when the concentrations of ammonium chloride and potassium nitrate were low, the metabolic activity of nitrifying bacteria was higher than that of denitrifying bacteria in aerobic tanks. With the increase of concentration of ammonium chloride and potassium nitrate, the metabolic activity of denitrifying bacteria was gradually increased, and gradually higher than that of the nitrifying bacteria metabolism. When the concentrations of ammonium chloride and potassium nitrate were 100 mg/L and 20 mg/L, and the concentrations of ammonium chloride and potassium nitrate were 150 mg/L and 30 mg/L, O1 has the best denitrification effect. However, when the concentrations of ammonium chloride and potassium nitrate were increased, nitrogen load was increased, the denitrification effects of nitrification and denitrifying microorganisms were fluctuated. And the diversity index analyses by five indexes showed that the metabolic capacity of microorganisms to carbon sources is good. Note de contenu : - MATERIALS AND METHODS : Chemicals - Experimental equipment - BIOLOG experimental method - Data analyses - RESULTS AND DISCUSSION : Community analyses of nitrogen metabolism microorganisms in O3 - Functional microbial community analyses based on carbon source metabolism in activated sludge - Analyses of carbon metabolism characteristics of microorganisms in O3 En ligne : https://drive.google.com/file/d/1hwGiqo4g-BvZYsppBVMikxxE57zXlOF7/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31401 [article]

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