Abstract: The strain T1 which is domesticated from wastewater drainage sludge in a lead-zinc mine of Hubei Daye, can effectively adsorb Zn²⁺ and Pb²⁺ and is resistant to low pH value.Identified by molecular biology, it is called the Cellulosimicrobium funkei.T1 was immobilized on activated carbon by a single strain of continuous membrane, the immobilized biological activated carbon (IBAC) technique was adopted to treat the acidic Pb-Zn mine waste water with pH value 4, Pb²⁺ content of 30 mg/L, Zn²⁺ content of 100 mg/L, and then contrasted with a simple activated carbon adsorption process.The test results showed that: the removal rate of Zn²⁺ and Pb²⁺ for 7 d reached to 75.28% and 74.16% respectively by IBAC process, and the pH value of treated wastewater raised to between 6.8 and 7.5.Although the activated carbon adsorption process realized the removal rate of 96.80% and 95.21% of Pb²⁺ and Zn²⁺ in dealing with the wastewater at the initial stage, but decreased to 9.65% and 12.93 % only after 80h.While the IBAC process can remain removal rate of Pb2+ and Zn2+ between 68.27% and 76.25%, between 71.27% and 77.89% respectively.SEM test results showed that under the activated carbon membrane, the particle is covered by T1, and becomes coarser and more porous.In fibrous, T1 expands in volume after adsorbing Pb²⁺ and Zn²⁺, and owns a stronger bond with each other.The findings above can be as a reference for industrial processing of acid Pb-Zn mine drainage by IBAC technology.

Key words: Immobilized biological activated carbon process, Acid Pb-Zn mine drainage, Lead and zinc ion, Absorption