The nitrogen removal performance and microbial community on mixotrophic denitrification process

Zheng, Shuilin; Yang, Xiangjing; Liu, Xiangyin; Zhou, Hongen; Fang, Jin; Gong, Siyuan; Yang, Junfeng; Chen, Jiannv; Lu, Tiansheng; Zeng, Ming; Qin, Yuyue

doi:10.1016/j.biortech.2022.127901

Cited by 37 publications

(8 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… 22 The increase of PN was significantly larger than that of PS between different zones, indicating that PN, as the main component of EPSs in this experiment, effectively reflected the metabolism and activity of microorganisms. 19 This explained why the strongest denitrification was observed in the top zone and the weakest one in the middle zone.…”

Section: Resultsmentioning

confidence: 97%

See 1 more Smart Citation

Vertical spatial denitrification performance and microbial community composition in denitrification biofilters coupled with water electrolysis

Tang,

Huang,

Tan

et al. 2024

RSC Adv.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 97%

“…EPSs play an important role in the formation of biofilm, attachment, protection of microorganisms, and acquisition of nutrients. 19 In this study, the EPSs extracted from sludge at different zones of DNBF-WE were analyzed, as shown in Fig. 3 .…”

Section: Resultsmentioning

confidence: 99%

Vertical spatial denitrification performance and microbial community composition in denitrification biofilters coupled with water electrolysis

Tang,

Huang,

Tan

et al. 2024

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…Interestingly, the abundances of Lewinella from Bacteroidetes phylum and Planomicrobium from Firmicutes phylum were much higher in R2 than in R1. Lewinella was classified as a denitrifying bacterium that is widespread in aquatic environments and is involved in denitrification processes 45 . Planomicrobium was reported to be also associated with the denitrification process 46 .…”

Section: Resultsmentioning

confidence: 99%

“…Lewinella was classified as a denitrifying bacterium that is widespread in aquatic environments and is involved in denitrification processes. 45 Planomicrobium was reported to be also associated with the denitrification process. 46 Their high enrichment in R2 might be related to the large influx of actual wastewater with complex composition in R2 as the EBCT was significantly smaller than that of R1.…”

Section: Microbial Community Of Sludge After Operationmentioning

confidence: 99%

Start‐up and operation of anammox biofilter in treating low‐strength ammonia wastewater prepared by tail water from a municipal wastewater treatment plant

Jin

Ning

et al. 2023

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUNDEconomic technology of advanced nitrogen removal of municipal wastewater is urgently needed. In this study, anammox biofilter (A‐BF) as a carbon‐ and energy‐saving advanced nitrogen removal process was tested under the conditions of sewage secondary effluent.RESULTSThe results showed that A‐BF could be successfully started up under total nitrogen (TN) of both 25 and 75 mg L−1 within 30 days at 25 °C. It achieved a nitrogen removal rate of 0.62 ± 0.08 kg‐N m−3 d−1 with nitrogen loading rate of 1.35 kg‐N m−3 d−1 at TN of 17 mg L−1. The ceramsite bed was conducive to the formation of biofilm and enrichment of functional microorganisms. The volatile suspended solid reached 1.39–7.33 g L−1, in which the abundance of the typical anammox bacteria Candidatus_Brocadia and Candidatus_Kuenenia occupied 0.96–1.35% and 0.29–0.92%, respectively.CONCLUSIONSOverall, under low TN concentration and high nitrogen load, A‐BF could be a candidate technique for advanced nitrogen removal of municipal sewage. © 2023 Society of Chemical Industry.

show abstract

“…are the most watched influencing factors in this process. Zheng et al [9] explored denitrification performance and microbial community by changing the molar ratio of influent C/N/S and concluded that the mixotrophic system could indeed enhance denitrification performance, which provides a theoretical basis for establishing an efficient biological denitrification. Chu et al [10] used eight sets of pyrite-enhanced vertical flow constructed wetlands (VFCW) to treat low C/N ratio wastewater and found that the addition of pyrite significantly promoted TN removal and achieved mixotrophic denitrification at a low C/N ratio; microbial analysis showed that the community structure and diversity of microorganisms changed significantly, while the growth of autotrophic (Thiobacillus) and heterotrophic (Thauera) bacteria was enhanced.…”

Section: Introductionmentioning

confidence: 99%

Experiments on Mixotrophic Denitrification under Different Hydraulic Loads and Water Temperatures

Zhang¹,

Liu²,

Ma³

2023

IJHT

View full text Add to dashboard Cite

Currently most wastewater treatment plants are faced with upgrading and reconstruction to further improve the effect of deep denitrification. To this end, this paper conducts an experimental study on deep denitrification in the sulfur mixotrophic nitrification filter process using sulfur as filler. During the experiments, when the water temperature of the mixed pool was around 15℃, the influent nitrogen load was 7.3×10-3kg/m3• d, and hydraulic retention time (HRT) was 3.5 h, the average effluent TN concentration was 4.22 mg/L and the TN removal rate reached 43.42%, stably reaching the requirements of the core control area stipulated in the Daqing River Basin Water Pollutants Discharge Standard (DB13/2795-2018); under the conditions of HRT = 3.5 h and water temperatures of 15℃, 22℃, 27℃, 35℃ and 40℃, the average TN removal rate of the mixotrophic denitrification filter reached the highest at 35℃, up to 63%; two-factor analysis of variance (ANOVA) was applied to illustrate the influence of the two factors (water temperature and HRT) on the TN removal rate, and to conclude that the influence of each factor on its TN removal rate is ranked in a descending order: B (water temperature) > A (HRT) > A × B (interaction), all of which were important conditions to be considered, and water temperature was the most influential. These results show that the sulfur mixotrophic denitrification filter has the ability to deeply degrade the TN in the secondary effluent. This study provides a theoretical basis for the sulfur mixotrophic denitrification filter to be used as a deep treatment unit. Also, in the actual application, other operating conditions should be designed and considered to adapt to the uncertain seasonal temperature changes.

show abstract

The nitrogen removal performance and microbial community on mixotrophic denitrification process

Cited by 37 publications

References 35 publications

Vertical spatial denitrification performance and microbial community composition in denitrification biofilters coupled with water electrolysis

Vertical spatial denitrification performance and microbial community composition in denitrification biofilters coupled with water electrolysis

Start‐up and operation of anammox biofilter in treating low‐strength ammonia wastewater prepared by tail water from a municipal wastewater treatment plant

Experiments on Mixotrophic Denitrification under Different Hydraulic Loads and Water Temperatures

Contact Info

Product

Resources

About