摘要
苯酚废水来源广泛,对环境造成严重威胁。利用菌藻颗粒污泥系统(MBGS)处理苯酚废水的结果表明:该系统对废水中化学需氧量(COD)、氨氮(NH_(4)^(+)-N)、硝氮(NO_(3)^(-)-N)和总无机氮的去除率分别为71.66%、74.67%、66.92%和67.19%,且长期运行稳定,MBGS生物量(MLSS)和EPS(胞外聚合物)分别由原来的1880 mg/L和45.92 mg/g VSS升至2500 mg/L和89.45 mg/g VSS,证明MBGS对苯酚具有优秀的抗毒和去除性能,且陶厄式菌属(Thauera)和黄杆菌属(Flavobacterium)是优势菌属。通过液相色谱-质谱联用技术(LC-MS)检测出水物质,发现较高浓度的链状易降解有机物,说明MBGS对苯酚废水的COD去除是苯环开环。
Phenol wastewater comes from a wide range of sources and poses a serious threat to the environment.A mycobacterial granular sludge system(MBGS)was utilized to treat phenol wastewater,the results showed that the removal rates of chemical oxygen demand(COD),ammonia nitrogen(NH_(4)^(+)-N),nitrate nitrogen(NO_(3)^(-)-N)and total inorganic nitrogen by MBGS were 71.66%,74.67%,66.92%and 67.19%,respectively.The biomass(MLSS)and EPS(extracellular polymers)of MBGS increased from 1880 mg/L and 45.92 mg/gvss to 2500 mg/L and 89.45 mg/gvss,respectively,which proved that MBGS had excellent antitoxicity and removal performance for phenol.Thauera and Flavobacterium were the dominant genera.Detection of effl uent substances by liquid chromatography-mass spectrometry(LC-MS)revealed higher concentrations of chain-like readily degradable organics,suggesting that the COD removal of phenol wastewater by MBGS is through benzene ring opening.
作者
陈庆峰
Chen Qingfeng(China Urban Construction Research Institute Limited Hubei Branch,Wuhan 430040,China)
出处
《皮革制作与环保科技》
2024年第14期5-7,共3页
Leather Manufacture and Environmental Technology
关键词
菌藻颗粒污泥
苯酚废水
细菌群落结构:苯酚降解途径
bacterial algal granular sludge
phenol wastewater
bacterial community structure:phenol degradation pathway
