Publications by authors named "Cai-Cai Lu"

The heterotrophic-autotrophic reactor including two chambers, that is, the lower part of the heterotrophic zone and the upper part of the autotrophic zone, was used to remove highly concentrated perchlorate (ClO) wastewater. The reduction characteristics of ClO and the effluent sulfur (SO) concentration were investigated using different influent ClO concentrations and C/Cl ratios. By adjusting the influent C/Cl ratio from 2 to 1, the reactor was started up successfully within 36 d.

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Three autotrophic packed-bed reactors, each with a different sulfur/quartz sand ratio(R1, 2:1; R2, 1:1; R3, 1:2,)were used to remove high-concentration perchlorate from contaminated water. The perchlorate removal efficiency, kinetics, and biofilm of the reactors were studied using different perchlorate concentrations and hydraulic retention times (HRTs). The perchlorate removal efficiency decreased with higher perchlorate concentration and shorter HRT, and the removal efficiency of R1 was higher than of R2 and R3.

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The effects of perchlorate concentration and hydraulic retention time (HRT) on perchlorate reduction characteristics were investigated in a sulfur-based perchlorate reduction reactor.The results showed that the perchlorate was completely removed at HRT of 12 h and the influent perchlorate concentration ranged from 50 mg·L to 194 mg·L;The perchlorate removal efficiency was 74% at HRT of 4 h and the influent perchlorate concentration was 194 mg·L;The yield of sulfate was increased by increasing the influent perchlorate concentration and HRT;The influent pH and alkalinity was approximately 8.0 and 500 mg·L CaCO,and the effluent pH and alkalinity was approximately 6.

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