Dissovled organic matters characteristics in coal gasification waste water
ZHAO Shuxia
MA Hui
ZHAI Qihang
ZHANG Liping
CUI Yuying
Abstract：The dissolved organic matters (DOM) in coal gasification waste water determined the treatment agent and microbial growth,meanwhile,the effects of waste water treatment project were directly influenced by them.The spectral characterization of DOM reflected the oxidation,degradation and absorption characteristics of all kinds of the components.Some waste water after removing phenol ammonia from one urea production enterprise which adopted coal gasification technology was analyzed.The HoA,HoB,HoN,HiA,HiB,HiN in the waste water were separated with resin separation method.The waste water characteristics were tested by ultraviolet-visible spectrum and three dimensional fluorescence spectrum.The experimental results showed that the proportion of HoA and HoN components in DOM were up to 43.21％ and 33.65％ respectively which meant there were many aromatic compounds with unsaturated structure in the waste water.The E300/E400 of 6 components in dephenolized waste water ranged from 2.88 to 5.00,the low value of E300/E400 showed the high humification degree of waste water and the main refractory organics with benzene ring structure.According to three dimensional fluorescence spectrum,the strongest fluorescence response region of 6 components in DOM mainly included 4 kinds of organics such as humic-like acid,fulviclike acid,tyrosine-like acid and tryptophan-like acid.All these analysis provided theoretical basis for controlling and treating the organic pollutants of the coal gasification waste water.
Keywords：coal gasification waste waterDOMcomponent separationultraviolet-visible spectrumthree dimensional fluorescenceorganic pollutants
Publication Date：2017-01-01