Explore the advantage of step-feed Anoxic–Oxic (AO) process …
Jul 10, 2023 · In this study, the advantage of step-feed Anoxic–Oxic (AO) is explored by a model-based approach for a retrofit project treating low C/N influent.
Operation mode of a step-feed anoxic/oxic process with ... - Nature
Feb 4, 2019 · The use of a three-stage step-feed anoxic/oxic (A/O) process for the treatment of raw wastewater resulted in reductions in the concentrations of total nitrogen (TN) and total phosphorus (TP)...
A novel three-dimensional biofilm-electrode/anoxic-oxic process …
Aug 1, 2024 · Anoxic-oxic (AO) process is a traditional nitrogen and phosphorus removal process with the alternation of anoxic and oxic operation in the sewage treatment plant. However, the effluent (especially total nitrogen) can not meet the increasingly discharge standards in …
Two-stage anoxic-oxic (A/O) system for the treatment of coking ...
Aug 1, 2021 · A full-scale coking wastewater treatment plant with a two-stage anoxic-oxic-anoxic-oxic (A1/O1/A2/O2) process was investigated systematically. The experimental results showed that the AOAO process exhibited an excellent removal capacity of …
Application of an Anaerobic–Anoxic–Oxic–Oxic (AAO/O) Model to …
Jun 11, 2022 · A conventional anaerobic–anoxic–oxic (AAO) process is recognized as an easy-to-handle approach that constrains chemical use during the procedure. Herein, we improve an AAO system by adding more oxic orders in association with a biological membrane in order to increase the hydraulic retention time (HRT) of the oxic zone in the system.
Evaluation of Carbon and Nitrogen Removal Performance of the Oxic …
Dec 23, 2022 · In this study, a two-step nitrification–denitrification activated sludge model no. 3 for coking wastewater (TCW-ASM3) model was established. The addition of new components and processes enables TCW-ASM3 to accurately simulate …
An Oxic–Hydrolytic–Oxic Process at the Nexus of Sludge Spatial ...
Mar 12, 2021 · A novel oxic–hydrolytic–oxic (O/H/O) process based on a three-sludge regime was developed to treat coking wastewater with a high C/N ratio and biological toxicity.
Model-based evaluation of three different A2O processes in
Jun 24, 2022 · On comparison, the R-A 2 O process reduces the operational cost index (OCI) by 4.2% in comparison with the A 2 O process with improved TP removal of 32.2%. Metal addition is carried out in the last aerobic reactor and carbon addition is carried out in the first anaerobic reactor in each process.
An efficient oxic-anoxic process for treating low COD/N tropical ...
Nov 1, 2020 · In this study, we assessed and optimized a low-dissolved-oxygen oxic-anoxic (low-DO OA) process to achieve a low-cost and sustainable solution for wastewater treatment systems in the developing tropical countries treating low chemical oxygen demand-to-nitrogen ratio (COD/N) wastewater.
Operation mode of a step-feed anoxic/oxic process with …
Feb 4, 2019 · Optimal utilization of carbon sources is the main focus of step-feed technology, which optimizes carbon source distribution in the wastewater treatment process to rationally distribute limited carbon sources to denitrification and phosphorous removal reactors.