Aeration equipment is used in activated sludge systems, moving bed bioreactors, sequencing batch reactors, and equalisation tanks. Depending on the application, either coarse bubble or fine bubble aeration systems may be employed.
Moreover, mixing requirements are carefully considered so that solids are maintained in suspension and dead zones are prevented. As a result, optimum biological activity can be maintained throughout the treatment process.
Aeration Equipment for Sewage Treatment is regarded as one of the most important components of a biological wastewater treatment plant. Aeration Equipment for Sewage Treatment is used to supply oxygen to the biomass so that organic pollutants and dissolved nitrogen compounds can be effectively removed.
Typical applications include:
- Sewage treatment plants.
- Winery effluent treatment plants.
- Industrial wastewater treatment systems.
- Aerobic digesters.
- Equalisation and balancing tanks.
- MBBR and activated sludge processes.
Blowers and Diffusers
Air is normally supplied by positive displacement blowers or side channel blowers. Thereafter, the air is distributed through stainless steel or HDPE pipework and introduced into the wastewater through diffusers.
Fine bubble diffusers are commonly selected when oxygen transfer efficiency is required. Conversely, coarse bubble systems may be preferred where mixing performance and resistance to fouling are considered more important.
Because aeration equipment is continuously operated, reliability and ease of maintenance are regarded as essential design considerations.
Energy Efficient and Reliable Operation
Energy consumption is significantly influenced by the aeration system. Therefore, equipment is carefully sized to ensure that oxygen requirements are met while operating costs are reduced.
Variable speed drives may be incorporated so that airflow can be adjusted according to process demand. In addition, duty and standby blowers are frequently installed to improve reliability and maintain uninterrupted operation.
Consequently, long-term operating costs can be reduced and process stability can be improved.
Custom Designed Aeration Systems
Every wastewater treatment plant is different and, therefore, aeration systems are designed to suit the specific application. Airflow requirements, oxygen demand, tank geometry, and maintenance considerations are carefully evaluated during the design stage.
At HWT, aeration equipment is supplied as part of complete treatment systems or as standalone upgrades for existing plants. As a result, efficient oxygen transfer, dependable operation, and long service life can be achieved.
