The Analysis Of Organic Matter And Aerobic Biodegradation Characteristics In Typical Synthetic Rubber's Wastewater

Styrene butadiene rubber(SBR) is a copolymer of butadiene and styrene,it was divided into emulsion polymerized styrene butadiene rubber(ESBR, styrene butadiene styrene rubber) and solution polymerized styrene butadiene rubber(SSBR, referred to as styrene butadiene styrene butadiene rubber) according to the polymerization system. Because of its excellent properties, it is widely used in industrial rubber products.With the increasing of production in recent years, the amount of wastewater also has been increased. The water quality of styrene butadiene rubber wastewater is more complex, so it is very important to analyze the wastewater of styrene butadiene rubber production.Combined with the production process, the detection results of three-dimensional fluorescence spectra and UV absorption spectra showed that, styrene-butadiene rubber wastewater contains organic amines, benzenes, Ketones and aldehydes and other organic matter. Classification by ultrafiltration and resin were used to grade the component of pollutants in styrene-butadiene rubber wastewater. The results showed that styrene-butadiene rubber wastewater mainly contained small molecule of less than 1kDa molecular weight, accounting for 82% of total DOC; HIS component contained more inorganic component, accounting for 45.14 of total DOC.The pre processing conditions and gas conditions were optimized.The method were established for the liquid-liquid extraction and gas chromatography/mass spectrometry in determination of styrene-butadiene rubber wastewater characteristics of 15 kinds of semi volatile pollutants analysis method. The detection limits of the method were in the range of 0.1 ~ 592?g/L, RSD(n=7) were less than 5.6%, the most recovery rates were in the range of 80% ~ 120%.The pre processing conditions and gas conditions were optimized.The method were established for the purge and trap in the gas phase chromatography/hydrogen flame ionization detector combined determination of styrene-butadiene rubber characteristics of 11 kinds of volatile pollutants in waste water. The detection limits of the method were in the range of 0.3 ~ 407?g/L, RSD(n=7)less than 4.9%, the recovery rates were in the range of 89% ~ 128%.Aerobic biodegradabilities of styrene-butadiene rubber wastewater was detected. The COD,TOC,Characteristics of organic pollutants,three dimensional fluorescence spectra and UV absorption spectra of wastewater were studied in the process of degradation. Results showed that COD and DOC of the styrene-butadiene rubber wastewater after aerobic biodegradation were decreased to 155 mg/L and 76 mg/L, and the removal efficiencies were 76.07% and 70.08%, respectively. styrene-butadiene rubber wastewater cannot reached sewage emission standardinin Emission Standard of Pollutants for Synthetic Resin Industry(GB31572-2015)by aerobic biological treatment process alone. Nine kinds of main organic pollutants in the wastewater including dibenzylamine, styrene and N,N-dimethyldodecylamine can be completely degraded in 19 days. Most of the fluorescent substances in this kind of wastewater can be removed by aerobic biodegradation. Total removal efficiencies of the three fluorescence peakintensities reached 93.87%.The removal rates of UV254 reached 52% in aerobic biodegradation of styrene-butadiene rubber wastewater.