The following core points should be emphasized when selecting aeration equipment to obtain products suitable for working conditions with controllable long‑term operating costs:
1. Compatibility with Working Conditions
Matching water quality and tank parameters: Confirm the suspended solids content, pollutant types, pH value of wastewater, as well as the length, width and depth of the aeration tank, so as to avoid dead air zones or poor adaptability after equipment selection.
Material selection based on requirements: EPDM material is applicable for conventional municipal wastewater. For industrial wastewater containing strong acids, strong alkalis or oils, silicone or polyurethane materials shall be adopted to prevent premature aging and cracking of membranes.
2. Verification of Core Performance Parameters
Oxygen utilization efficiency: Prioritize products with oxygen utilization efficiency ≥ 30%. Such products deliver higher oxygen mass‑transfer efficiency and significantly cut long‑term power consumption of blowers.
Aeration resistance: 3600 Pa falls within the low‑resistance range. Lower resistance reduces blower power consumption and the initial investment for blower selection.
Uniform air distribution: Ensure even bubble distribution across the whole tank to prevent sludge bulking caused by local oxygen deficiency or power waste from over‑aeration in partial zones.
3. Installation, Operation and Maintenance Considerations
Ease of installation: Fixed‑mount units are suitable for new projects. For upgrading‑and‑retrofit projects, lift‑type aerators are preferred. Maintenance can be performed from the tank surface without draining the tank water, which greatly reduces production shutdown losses.
Anti‑clogging performance: Give priority to products with dynamically‑opening‑and‑closing micropore design. Micropores close automatically when air supply stops, effectively preventing wastewater backflow and sludge clogging, and lowering maintenance frequency.
4. Brand and After‑sales Service Screening
Select manufacturers with years of manufacturing experience and good reputation in the aeration‑equipment industry. It is recommended to require suppliers to conduct air‑distribution modeling according to tank parameters to confirm the total quantity and layout scheme of aerators.
Verify warranty period, service response speed, and the accessibility of spare‑part replacement and technical support in advance, to avoid insufficient guarantee for later operation and maintenance.