Step-feeding food waste fermentation liquid as supplementary carbon source for low C/N municipal wastewater treatment: Bench scale performance and response of microbial community

Enhanced Nitrate Nitrogen Removal from Constructed Wetland via Fe3O4/Granular Activated Carbon Anode Microbial Electrolysis Cell under Low C/N Ratio

“…The Proteobacteria phylum had the highest percentage in all three reactors. The common denitrifying bacteria Thauera, Hydrogenophaga, and Dechloromonas were all Proteobacteria [43] and, under the influence of the electric field and Fe 3 O 4 modi-fication, the enrichment degree of Proteobacteria greatly increased from 36.51% to 45.43% and 82.15%, respectively; it has been reported in the literature that the increase in Proteobacteria enrichment is a direct response to the enhancement in denitrification [44]. The total abundance of these dominant phyla basically remained unchanged, indicating that the change in the enrichment degree of Proteobacteria was the main factor affecting the denitrification effect.…”

Food wastewater treatment using a hybrid biofilm reactor: nutrient removal performance and functional microorganisms on filler biofilm and suspended sludge

“…DNA extraction, PCR amplification and sequencing, quality control of raw data, and operational taxonomic unit (OTU) analysis were based on our previous study. 4 …”

“…FWW contains high levels of organic matter, nitrogen, and phosphorus, although there are few refractory substances. 4 Therefore, FWW has good biodegradability and is suitable for biological treatment. Biological treatment technologies include activated sludge and biofilm processes.…”

Denitrification Performance and Microbiological Mechanisms Using Polyglycolic Acid as a Carbon Source

“…The microbial-diversityindex statistics of the five groups of samples are presented in Table 2. The coverage index was used to determine the sequencing coverage of the species, and Table 2 shows that the coverage of sample libraries sequenced for each group of the samples was greater than 0.99, indicating that all the genetic information of the samples was obtained by sequencing and that the results were reliable and could be used as a basis for analysis [34]. The Shannon and Simpson indices reflect the diversity of a bacterial community; the greater the Shannon index and Simpson index are, the greater the diversity of the community.…”