Process information
| Key Data Set Information | |
| Location | GZ-GD-CN |
| Geographical representativeness description | 广州市白云区沙太北路以东、犀牛南路以北地段 |
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| Use advice for data set | It is important to consider the specific context and regulatory requirements of the geographical area where the AAO+MBR treatment process is being evaluated. Users of this dataset should account for potential variations in influent wastewater characteristics and adapt the process parameters accordingly. The data should be applied with caution to other regions without proper calibration. Life cycle inventory and impact assessment practitioners must include considerations for energy use, chemical consumption, and treatment efficiency. Exclusion of recycling flows should be stated clearly if applicable. Moreover, technological advancements or changes in regulations may affect the relevance of the data; hence updates may be necessary over time. |
| Technical purpose of product or process | The AAO+MBR (Anoxic-Anaerobic-Oxic + Membrane Bioreactor) treatment process unit is intended for advanced wastewater treatment and recycling. This process is typically utilized in municipal or industrial wastewater treatment facilities for water purification and reduction of pollutants. The application of this process is relevant for areas in need of efficient space utilization and high-quality effluent, such as the urban region located east of Shatai North Road and north of Xinhu South Road in the Baiyun District of Guangzhou City. |
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| General comment on data set | In municipal wastewater treatment, the above-ground AAO+MBR treatment process is an advanced combination of sewage treatment technologies. This process begins by introducing sewage into the treatment system utilizing AAO (Anaerobic-Anoxic-Oxic), where organic matter is oxidized and degraded in the aerobic zone before entering the anaerobic-anoxic zone for further removal of nutrients such as nitrogen and phosphorus. Subsequently, through the MBR (Membrane Bioreactor) process, water and microorganisms are effectively separated, ensuring high-quality treated water through solid-liquid separation with microfiltration membranes. The above-ground arrangement of this technology requires minimal space and is easy to maintain and operate. This combination of technologies efficiently removes pollutants such as organic matter, nitrogen, and phosphorus from wastewater, producing stable and reliable water quality that meets stringent discharge standards. |
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| Technology description including background system | The AAO+MBR treatment process (above-ground) exhibits the following technical characteristics:Membrane Bioreactor (MBR): This process utilizes a membrane bioreactor (MBR) wherein microfiltration membranes effectively separate water and microorganisms within the bioreactor. This membrane separation technology enables efficient solid-liquid separation, enhancing the water quality of treated water.Anaerobic-Anoxic-Oxic (AAO) Treatment Process: The AAO process combines aerobic and anoxic treatment zones, allowing for the removal of organic matter and nutrients such as nitrogen and phosphorus within a single system. Operational parameters such as oxygen supply, mixing rate, and gas-liquid ratio in both aerobic and anoxic zones need to be controlled to maintain optimal microbial growth conditions and reaction efficiency.Operational Conditions for Membrane Modules: Regarding the operation of MBR membrane modules, it is essential to maintain appropriate transmembrane pressure, flux, and cleaning cycles to ensure stable operation and long-term service life of the membrane modules.Related Upstream and Downstream Processes: Upstream processes for this technology include pretreatment of wastewater influent, such as screening, grit removal, and sedimentation, to remove large particles and settleable solids. Downstream processes involve membrane module cleaning and maintenance, as well as potential additional treatment steps such as advanced oxidation or disinfection, to ensure the final treated water meets discharge standards. |
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Modelling and validation
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