PCBs removal in the aged leachate by a new combination process, combined coagulation with a two-staged sequencing batch biofilm reactor with Luffa Sponges (LS) as the biomass carriers (LS-SBBR), was studied in this research. The results indicated that the removal rate of total PCBs in the aged leachate was 51.97%, and it was achieved mainly by the removal of trichlorobiphenyls, the PCBs contents in sludge in the two-staged LS-SBBR were consistent with the conclusion that the PCBs removal in liquid phase of the second LS-SBBR was higher than that of the first LS-SBBR.
Nowadays, the immobilization of At.t is a research potential. The immobilization of At.t on the sawdust filler was discussed in this paper. The experimental results indicated that sawdusts, as the immobilization fillers, can provide a stable living microenvironment for At.t showing the favorable bioactivity and strong acid-producing capacity. Also, under the optimal conditions with the inoculums concentration 12.5%, sulphur dosage 1% (w/v), dissolved oxygen (DO) in the bioreactor above 6 mg/l, the conductivity, pH, and H+ in the bioreactor were 45.2 ms/cm,0.964, and 0.109 mol/l,respectively. In the leaching ore experiment within 24 hours, bacteria effect of phosphorus removal was unconspicuous.
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