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微生物还原Cr(Ⅵ)的机理研究进展
doi: 10.13205/j.hjgc.201501008
THE ENGINEERING APPLICATION OF BIOFOR TREATING MIXING PHARMACEUTICAL WASTEWATER
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摘要: 含铬工业废水排放到环境中会对人体的健康和环境带来严重的危害。其中重金属铬的毒性会随着价态的变化而变化。微生物在代谢过程中可以将Cr(Ⅵ)还原为Cr(Ⅲ),从而降低Cr(Ⅵ)的毒性。从微生物还原Cr(Ⅵ)的机理类型,相关还原酶的基因特性,可还原Cr(Ⅵ)的微生物,影响还原的因素,Cr(Ⅵ)还原过程中存在的问题及发展前景等方面进行了综述。Abstract: BIOFOr was applied to treat the mixing pharmaceutical wastewater． BIOFOr reactor started up quickly with the mode of combination of natural hanging and vaccination hanging，and had a good performance，high resistance to impact load capacity，stable running． The average removal rate of COD and NH3 － N reached 72. 45% and 56. 8% respectively． The effluent indexes of BIOFOr could completely meet the Discharge Standard of Water Pollutants for Pharmaceutical Industry Mixing /Compounding and Formulation Category ( GB 21908 2008) ． The optimum gas-water ratio of BIOFOr was 5 ∶ 1． Combined air-water backwash mode was taken in BIOFOr．
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Key words:
- mixing pharmaceutical wastewater /
- A/O /
- start up /
- denitrification
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