Effect of novel sludge and coal cinder ceramic media in combined anaerobic–aerobic bio-filter for tetracycline wastewater treatment at low temperature

Yang, Kunlun; Yue, Qinyan; Han, Wei; Kong, Jiaojiao; Zhao, Pei; Duan, Lian

doi:10.1016/j.cej.2015.04.114

Cited by 38 publications

(6 citation statements)

References 29 publications

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“…The environment of

{NH}_{4}^{+} - N

absorption and biofilm growth provided by volcanic scoria particles is very important for

{NH}_{4}^{+} - N

removal at lower temperature. The system can increase the length of time during which nitrifying bacteria and

{NH}_{4}^{+} - N

are in contact and enrich the activity of nitrifying bacteria at low temperatures (Ma et al, ; Yang et al, ). Additional biofilm systems, that separated sludge retention time from hydraulic retention time, were beneficial to nitrifying bacteria growth.…”

Section: Resultsmentioning

confidence: 99%

Performance and bacterial community composition of volcanic scoria particles (VSP) in a biological aerated filter (BAF) for micro‐polluted source water treatment

Xie

Wang

Qiu

et al. 2019

Water Environment Research

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A laboratory‐scale biological aerated filter (BAF), using volcanic scoria particles (VSP), was used for treating micro‐polluted source water. The system reached a steady‐state stage and performed better at removing pollutants. In steady‐state stage, the effluent ammonia (NH4+-N) and chemical oxygen demand (COD) were consistently maintained below 0.3 and 3 mg/L, respectively. Both the NH4+-N and COD removal efficiencies decreased with shorter hydraulic retention time (HRT). The effluent NH4+-N and COD exceeded health standards at 15 min of HRT. Although performance was relatively poor for VSP‐BAF at low temperature, the NH4+-N removal still achieved the drinking water quality standard. The influences of influent NH4+-N and COD concentration changes were similar to that of temperature. A better performance was observed in NH4+-N removal under higher influent NH4+-N concentrations. In contrast, the effluent COD was more than 3 mg/L when the influent COD concentrations increased to about 9 mg/L. The phylogenetic and cluster analyses indicated that the effect of HRT on bacteria community structure was higher than that of temperature, while the ammonia‐oxidizing bacteria (AOB) are sensitive to temperature. The main phyla identified in total bacteria communities were Proteobacteria, Bacteroidetes, Firmicutes, and Nitrospirae. The main AOB were Nitrosomonadales and an uncultured ammonia‐oxidizing bacterium. Practitioner points The BAF using VSP obtained a good performance for treating micro‐polluted source water. The influence of HRT on the system was more significant than that of temperature. The system is resistant to NH4+-N concentration shocks while is unable to withstand the COD increasing. The effect of HRT on bacteria community structure was significantly higher than that of temperature.

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“…The environment of

{NH}_{4}^{+} - N

absorption and biofilm growth provided by volcanic scoria particles is very important for

{NH}_{4}^{+} - N

removal at lower temperature. The system can increase the length of time during which nitrifying bacteria and

{NH}_{4}^{+} - N

Section: Resultsmentioning

confidence: 99%

Performance and bacterial community composition of volcanic scoria particles (VSP) in a biological aerated filter (BAF) for micro‐polluted source water treatment

Xie

Wang

Qiu

et al. 2019

Water Environment Research

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“…At every stage of THE cooling and warming processes there were a total of 42 species of PLFA counted by carbon chain distribution from C10 to C20. In order to investigate the richness and evenness of PLFA, which was the reflection of community diversity, Shannon-Wiener diversity analysis was applied [37].…”

Section: Shannon-wiener Diversity Analysis Of Phospholipid Fatty Acidmentioning

confidence: 99%

Cold-Shock Resistance of Activated Sludge Microorganisms Strengthened by a Static Magnetic Field

Niu¹,

Wu²,

Lei³

et al. 2019

Pol. J. Environ. Stud.

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Low temperature (0-10ºC) is a key limiting factor for biochemical wastewater treatment methods [1]. The fact that varying cooling speed rate can cause different degrees of microbial cell damage has been studied. Rapid cooling causes intracellular ice damage, while slow cooling leads to microbial solution loss (solution damage) [2]. In a biological wastewater treatment process, the temperature variation rate is relative to the microbe, which has great influence on wastewater treatment efficiency [3-4]. Under normal temperatures, the generation and elimination of active oxygen in vivo keeps balance, while the active oxygen tends to excessive accumulation

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“…BAF is more suitable for advanced nitrogen and phosphorous removal. 16 In lab-scale BAF, the removal efficiency of NH 4 + -N has been reported up to 92.5-93.9%. In actual pre-treatment of polluted river water, the pilot-scale BAF exhibited a removal efficiency of 84.1% with relatively small land space required, 17 showed that BAF was an attractive process option.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with the classical activated sludge, BAF possess the advantages of high biomass retention, tolerance to toxicity, excellent removal efficiency, and slurry separation. BAF is more suitable for advanced nitrogen and phosphorous removal 16 . In lab‐scale BAF, the removal efficiency of NH 4 + ‐N has been reported up to 92.5–93.9%.…”

Section: Introductionmentioning

confidence: 99%

Enhanced nitrogen removal of aquaculture wastewater in the combined biological aerated filter: the effect of GAC location setting

Zhou

Wang

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND Biological aerated filter (BAF) is an efficient and economical treatment process to cope with the rapid increasing drainage of aquaculture wastewater. Here, GAC and ceramic, which have the combination advantage, was used as filters of BAF system to treat the aquaculture wastewater. The effect of filters in different sequences was also compared. The BAF with GAC at the bottom is named as GAC‐down BAF, and the BAF at the top is named as GAC‐upper BAF. RESULTS Results showed that the removal efficiency of total nitrogen (TN) in GAC‐down BAF was 54.2 ± 1.2% higher than that in GAC‐upper BAF, when the HRT was 3 h and the gas‐water ratio was 5:1. Additionally, it had better phosphorus and COD removal performance in the GAC‐down BAF than those in the GAC‐upper BAF. Microbial community analysis of biofilm attached to different filter layers indicated that the abundances of functional microorganisms like Zoogloea spp., Acinetobacter spp., Pseudomonas spp., Nitrospira spp. on GAC of the GAC‐down BAF were higher than those attached to ceramsite at the same site of GAC‐up BAF. CONCLUSION It was demonstrated that GAC could provide a suitable niche for the growth of functional microbes at the up‐flow BAF system, and plays a key role in pollutant removals from aquaculture wastewater. © 2022 Society of Chemical Industry.

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Effect of novel sludge and coal cinder ceramic media in combined anaerobic–aerobic bio-filter for tetracycline wastewater treatment at low temperature

Cited by 38 publications

References 29 publications

Performance and bacterial community composition of volcanic scoria particles (VSP) in a biological aerated filter (BAF) for micro‐polluted source water treatment

Performance and bacterial community composition of volcanic scoria particles (VSP) in a biological aerated filter (BAF) for micro‐polluted source water treatment

Cold-Shock Resistance of Activated Sludge Microorganisms Strengthened by a Static Magnetic Field

Enhanced nitrogen removal of aquaculture wastewater in the combined biological aerated filter: the effect of GAC location setting

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