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- W2792694741 abstract "Sulfidogenic processes have been successfully used in saline wastewater treatment for sludge minimization, but are inapplicable in treating sulfate-deficit wastewater. This study reported a novel internal sulfur cycling (ISC) process for sulfate-deficit wastewater treatment. The process consisted of a sulfur-reducing reactor (SRR) for organics removal, followed by a sulfide-oxidizing reactor (SOR) and sedimentation tank for sulfur recovery. Under different hydraulic retention times and organic loading rates, the performance of ISC system was evaluated. The lab-scale ISC system removed 94% of chemical oxygen demand (COD), of which 81% were accomplished in the SRR by sulfur reducers without excessive sludge withdrawal throughout the 200 days of operation. The produced sulfide were mainly re-oxidized back to elemental sulfur in the SOR by sulfide-oxidizing bacteria, and sulfur balance demonstrates that 76% of sulfur recycling were achieved. Cost-benefit analysis reveals that the ISC process is a more cost-effective sludge-minimized biotechnology for sulfate-deficit wastewater treatment compared to conventional activated sludge processes." @default.
- W2792694741 created "2018-03-29" @default.
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- W2792694741 date "2018-06-01" @default.
- W2792694741 modified "2023-10-18" @default.
- W2792694741 title "A novel elemental sulfur reduction and sulfide oxidation integrated process for wastewater treatment and sulfur recycling" @default.
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- W2792694741 doi "https://doi.org/10.1016/j.cej.2018.02.105" @default.
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