Wang, Weigang published the artcileOrganic compounds evolution and sludge properties variation along partial nitritation and subsequent anammox processes treating reject water, Safety of 2,3-Dimethoxybenzaldehyde, the main research area is organic compound sludge nitritation anammox wastewater treatment; Denitrification; Nitrogen removal; Organic compounds evolution; Partial nitritation-anammox; Reject water.
Reject water contains complex components of organic compounds, which have significant influences on the nitrogen removal performance when treated using biol. autotrophic nitrogen removal technol. In this study, a two-stage partial nitritation (PN)-anammox (floc-granule) system was established to treat reject water (COD/NH+4-N = 0.97 ± 0.15), and the evolution of organic compounds along PN and annamox bioreactors was investigated using gas chromatog.-mass spectrometry and excitation-emission matrix. Also, the variation of PN and anammox sludge properties relating to COD reduction was examined The PN-anammox system removed approx. 80% of total inorganic nitrogen and COD with hydraulic reaction time of 16 h. The influent organics (330-600 mg COD/L) in reject water were primarily composed of volatile, protein-like and humic acid-like organic compounds PN process contributed 53 ± 18% of the overall COD removal, primarily including oxygen-containing organics (e.g. phenol), proteins and humic acids. Anammox process contributed 22 ± 15% of the overall COD removal, but large mol. acids (e.g. lactic acid) and small mol. alcs. (e.g. glycerol) were reoccurred, contributing to the effluent COD with recalcitrant hydrocarbons (e.g. n-Octadecane). Reject water increased the extracellular proteins/polysaccharides ratio of PN and anammox sludge, promoting the adsorption and degradation of organic compounds High-throughput sequencing results showed that denitrifying bacteria of Ottowia increased from 0.03% to 14.4% in PN reactor, and of Denitratisoma increased from 9.6% to 15.4% in anammox reactor. The occurrence of these denitrifiers might mitigate the neg. impact of organics to functional organisms. This study highlights the organics fate during PN-anammox treatment system, which is important to maintain the robust nitrogen removal when treating organics-containing and high ammonium concentration wastewater.
Water Research published new progress about 16S rRNA Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Safety of 2,3-Dimethoxybenzaldehyde.
Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem