Evaluation of Bench Scale SBR for Removal of Nutrients from Domestic Wastewater

Basu, Sudevi; Kumar, Barun

doi:10.1061/40856(200)16

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Effect Of Olrs On Nitrogen Treatment Efficiency1

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2023

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“…Though the activated sludge content was the same as the operating conditions in phase 2, it was evident that treatment efficiency has greatly increased from 47.8 to 70.2%. Thereby, it was found that the appropriate nutrient ratio played a very important role in the nitrogen treatment process [23]. It was reported that a high OLR could improve the nitrification process.…”

Section: Effect Of Olrs On Nitrogen Treatment Efficiencymentioning

confidence: 99%

Effect of Organic Loading Rates on Performance of Treating Dairy Wastewater in a Lab-Scale Sequencing Batch Reactor

Bui

Tran

et al. 2023

Int. j. eng. technol. innov.

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This study aims to investigate, the effect of organic loading rates (OLRs), nutrient ratio addition, and sludge retention time (SRT) on treating dairy wastewater in a sequencing batch reactor (SBR) system. This investigation is verified by experiments conducted in 3 phases at 3 different OLRs (1.8, 1.2, and 0.9 kg/m3d, respectively). Urea ((NH2)2CO) is added to make a suitable (COD:N:P) ratio of (100:5:1) in dairy wastewater. The SRT is adjusted from 50 days to an appropriate value of 18 days. The obtained results show that the COD, TN, and TP removal efficiencies are increased with decreasing OLRs. Sludge concentration in the SBR tank is stable at 1100 mg/L after adding (NH2)2CO. In addition, the SBR operated at a suitable SRT (i.e. 18 days) helps the biomass stably, resulting in enhancement of COD, TN, and TP removal. The results are helpful to the design of SBR for treating dairy wastewater.

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Section: Effect Of Olrs On Nitrogen Treatment Efficiencymentioning

confidence: 99%