In this study, a methane bioreactor-landfill system was utilized to treat municipal solid waste (MSW). Through analyzing and detecting the pollutant(COD Cr ) in the bioreactor-landfill system, a simulated mathematic formula of waste degradation was established. After treated with this system, the COD Cr and VFA concentrations in MSW could be decreased from more than 20000 and 7000 mg·L -1 to less than 1500 and 200 mg·L -1 , respectively.
Under different pH conditions,the trace concentrations of total arsenic and arsenite in synthesized waster-water samples were determined by hydride generation coupled with atomic absorption spectrometer(HG-AAS).The limit detection of total arsenic and arsenite were 0.067μg/L and 0.395μg/L,and Beer’s law was obeyed in a wide linear dynamic range of 0.067μg/L-20μg/L and 0.395μg/L-20μg/L respective.The recovery of total arsenic and arsenite was 97.7%-99.9% and 89.4%-106%,respectively.
