Treatment of wastewater from acrylonitrile‐butadiene‐styrene (ABS) resin manufacturing by biological activated carbon (BAC)

Abstract

BACKGROUND: The wastewater originating from the production of acrylonitrile-butadiene-styrene (ABS) resin is a toxic and refractory industrial wastewater. The purpose of this work is to investigate the characteristics of adsorption and biodegradation of biological activated carbon (BAC) for ABS resin wastewater. RESULTS: More than 80% of chemical oxygen demand (COD), total organic carbon (TOC) and organic nitrogen (Org-N) was removed after the 100th run in BAC with the help of bioregeneration, and the treatment efficiency of BAC was higher than that of adsorption and biodegradation alone. The initial Org-N was mainly transformed into NH 4 + -N, and the transform efficiency reached 65% after the 100th run. After bioregeneration, the COD and TOC removal efficiencies of BAC reactor reached 88.97% and 86.26%, respectively. The BAC had different bioregeneration efficiencies of 94.41, 64.82, 61.05 and 40.04% for 3, 3-imminodipropiononitrile, 3, 3-oxydipropiononitrile, α, α-dimethyl-benzylalcohol and acetophenone, respectively, which mainly resulted from the different polarity of the compounds. CONCLUSION: BAC could protect microorganisms from shock loadings of toxic, refractory and complicated ABS resin wastewater. The mechanism of the organic pollutants removal by BAC consisted of three phases including adsorption, bioregeneration and stability.

Treatment of ammunition wastewater by the combined Fe 0 /air and Fenton process (1 st Fe 0 /air-Fenton-2 nd Fe 0 /air)

“…was observed at the Ex/Em of 288/368 nm in the EEM fluorescence spectrum of raw ammunition wastewater. However the aromatics usually have two strong fluorescence peaks located at the similar emission wavelength according to our previous works [29,30] . The fluorescence characteristics of ammunition wastewater were mainly attributed to the fluorescence quenching of the nitro group (-NO 2 ).…”

“…In our previous work, this technology was successfully used to detect the changes and transformation of aromatic pollutants in wastewater during the degradation process [21,29] . Therefore, this technology could also be used to rapidly analyze the changes and transformation of nitroaromatic pollutants in ammunition wastewater during the degradation process.…”

Mineralization of ammunition wastewater by a micron-size Fe0/O3 process (mFe0/O3)

“…30,51 Thus the changes and transformation of View Article Online nitroaromatic pollutants in ammunition wastewater during the degradation process can also be rapidly analyzed by the EEM uorescence spectroscopy. The obtained EEM uorescence spectra are shown in Fig.…”

Applying fluorescence spectroscopy and multivariable analysis to characterize structural composition of dissolved organic matter and its correlation with water quality in an urban river

“…Three-dimensional excitation-emission matrix (EEM) fluorescence, a simple, rapid, high-sensitive and low-cost method, has widely been used to quantitatively characterize aquatic DOM and to follow its dynamics in different aqueous environments, e.g., in rivers (Lu et al 2009;Goldman et al 2012), estuaries (Osburn et al 2012), lakes (Zhang et al 2011;SanClements et al 2012), seawater and sea ice (Murphy et al 2008;Pautler et al 2012), wastewater and effluents (Lai et al 2012;Yu et al 2013) and groundwater (Mostofa et al 2007). Early comparisons of DOM to different aquatic systems capture several specific peaks, originally designated A and C (humic substances including both humic and fulvic acids), T and B (proteinous materials resembling tryptophan, phenylalanine and tyrosine) and M (microbial humic like) (Hudson et al 2008;Osburn et al 2012).…”