Comparison on the photogranules formation and microbial community shift between the batch and continuous-flow mode for the high saline wastewater treatment

Zhu, Jing; You, Hong; Li, Zhipeng; Xie, Binghan; Chen, Hongying; Ding, Yi; Qi, Shaojie; Li, Weirun; Ma, Binyu; Qu, Xiankun; Tan, Hongmei; Liu, Feng; Ng, How Yong

doi:10.1016/j.cej.2022.137284

Cited by 17 publications

(1 citation statement)

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“…For large-scale treatment plants requiring a large amount of continuous wastewater, the CFR operation has higher treatment efficiency and better treatment consistency than the SBR. Zhu et al ( 2022 ) compared the ability of the SBR and the CFR to treat high-salinity wastewater, and the results showed that the CFR exhibited better pollutant removal performance than the SBR. Compared to other reductants in the SAD process, the elemental sulfur-driven SAD process has exhibited low toxicity, low cost, stability, and it is widely used in practical wastewater treatment plants that rely on a continuous inflow (Li Y. et al, 2020 ; Zhou et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Salinity stress results in ammonium and nitrite accumulation during the elemental sulfur-driven autotrophic denitrification process

Fan,

Huang,

Xiong

et al. 2024

Front. Microbiol.

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In this study, we investigated the effects of salinity on elemental sulfur-driven autotrophic denitrification (SAD) efficiency, and microbial communities. The results revealed that when the salinity was ≤6 g/L, the nitrate removal efficiency in SAD increased with the increasing salinity reaching 95.53% at 6 g/L salinity. Above this salt concentration, the performance of SAD gradually decreased, and the nitrate removal efficiency decreased to 33.63% at 25 g/L salinity. Approximately 5 mg/L of the hazardous nitrite was detectable at 15 g/L salinity, but decreased at 25 g/L salinity, accompanied by the generation of ammonium. When the salinity was ≥15 g/L, the abundance of the salt-tolerant microorganisms, Thiobacillus and Sulfurimonas, increased, while that of other microbial species decreased. This study provides support for the practical application of elemental sulfur-driven autotrophic denitrification in saline nitrate wastewater.

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Section: Introductionmentioning

confidence: 99%