Published: Jan. 1, 2023

Micron-size ceramic waste powder (<75 μm and 75–150 μm) was used as the carrier in a high concentration bio-fluidized bed (HPB) to treat simulated overflow sewage. The sludge extracellular polymers (EPS), electron transfer capacity of EPS, nitrogen removal pathways, microbiological characteristics were analyzed gain insights into pathways mechanisms. results showed that only effluent from HPB could meet stringent pollutant discharge standards China 50 mg/L for CODCr 15 total beginning end. Meanwhile, electrochemical performance tests indicated accepting donating capacities EPS 42.75% 32.73% higher than those conventional activated sludge, meaning carriers can increase accelerate denitrification process. Also, metagenomics analysis relative abundances denitrification-related Nor genes 28%–39% (75–150 (CAS). These show powders have potential be systems

Language: Английский