Define the duty
Calculate oxygen demand for the biological load and establish the minimum airflow needed to prevent solids deposition.
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03 / Solutions
Aeration Equipment for Biological Treatment
Aeration equipment and layout support for oxygen transfer and mixing in new or upgraded biological wastewater-treatment systems.
Discuss Your Project
0301
Designed For
- Activated-sludge, A/O, A²/O, MBR, and biological polishing tanks
- Industrial and municipal aeration basins
- Existing basins with uneven air distribution or difficult maintenance access
- Projects requiring zoned control across changing oxygen demand
- New systems coordinating blowers, headers, branches, and diffuser modules
02
What Huida Can Support
- Oxygen-demand assessment and basin survey
- Diffuser selection and layout
- Air-header and blower-interface requirements
- Retrofit planning for existing basins
- Installation and maintenance guidance
03 / How the solution works
How the solution works
A blower supplies air through headers, branch pipes, risers, and diffusers.
The diffuser divides the airflow into smaller bubbles and distributes it across the biological basin so that oxygen transfer and mixing occur together.
Design starts from actual oxygen demand and minimum mixing air, then checks water depth, wastewater correction factors, system pressure loss, blower operating range, material compatibility, and maintainability.
04 / Process
Typical process configuration
Select & lay out diffusers
Choose diffuser type, airflow range, spacing, and zone arrangement around basin geometry and operating turndown.
Balance the air network
Check blower curve, header and branch losses, valve authority, condensate management, and distribution at maximum and minimum duty.
Commission & tune
Commission by zone, then tune pressure, airflow, mixing, dissolved-oxygen response, and maintenance access for the site conditions.
05 / Equipment
Equipment & supply scope
Blower interface
Design airflow, discharge pressure, turndown, isolation, relief, noise, and control signal requirements.
Air distribution network
Main header, zoned branches, valves, supports, drains, and pressure-measurement points.
Diffuser assemblies
Project-selected rigid or membrane devices, risers, manifolds, supports, and retrieval arrangements.
Controls & commissioning
Airflow or pressure indication, dissolved-oxygen feedback where appropriate, alarms, and commissioning test points.
06 / Project Value
Engineering advantages
Application-specific layout
Diffuser density and zoning are matched to basin geometry and loading instead of copied from a generic arrangement.
Maintainable configurations
Liftable modular assemblies can be considered where basin access and continuous operation make them appropriate.
Material options
Rigid and membrane alternatives can be matched to fouling, scaling, chemicals, temperature, and maintenance practice.
Complete-system coordination
The diffuser, piping, valves, and blower are designed as one pressure and control system.
Equipment & Systems
Equipment configurations for your operating conditions.
Explore equipment designs and configurations, then work with us to match the selection to your feed stream and site conditions.
Equipment configuration
Tower-Type Rigid Diffusers
Tower-type rigid microporous diffusers with triangular air-distribution slits and a glass-fibre-reinforced ABS composite body, integrated with the basin air network.
- Rigid microporous structure with triangular air-distribution slits.
- Glass-fibre-reinforced ABS composite, selected with the process medium and operating conditions in mind.
- Diffuser spacing and branch piping coordinated with blower air-delivery duty.
07 / Project Data
Information we need from you
- Process oxygen demand and minimum mixing requirement
- Basin dimensions, water depth, level range, and internal obstructions
- Wastewater temperature, salinity, surfactants, fouling, and alpha/beta correction basis
- Existing blower curve, air-header dimensions, pressure records, and control philosophy
- Shutdown constraints, lifting access, material requirements, and test conditions
08 / Operations
Operation & maintenance
- Trend blower current, discharge pressure, branch pressure, valve position, and dissolved oxygen.
- Inspect distribution uniformity and investigate pressure or oxygen trends before cleaning.
- Drain condensate and keep headers, supports, and retrieval points accessible.
- Isolate, lock out, and depressurize the relevant air zone before lifting equipment.
- Judge oxygen-transfer performance only against an agreed test method and stated water conditions.
Designed for your project
Huida designs the aeration layout around your oxygen demand, wastewater characteristics, basin depth, fouling tendency, air distribution, and blower capacity. Performance targets are matched to the agreed operating and commissioning conditions.
09 / Experience
