Natural and pressure aeration towers and blocks for iron, manganese, and ammonium oxidation. Achieve 8-11 mgO2/dm³ outlet aeration with lower operating requirements than traditional solutions.
CFD, P&ID, SCADA and commissioning for critical water treatment plants.
Plant layouts, piping isometrics and construction-ready engineering drawings.
Flow, mixing and thermal CFD across treatment and process equipment.
Full mechanical, physico-chemical, biological and sludge equipment range.
Oxidation Principles
Aeration introduces oxygen into water to oxidise dissolved contaminants. Iron, manganese, and ammonium ions are converted to insoluble forms that can be removed by subsequent filtration. Reynolds & Bauhm systems achieve high oxygen transfer efficiency while minimising energy consumption.
Fe²+ → Fe³+ forms insoluble iron hydroxide for filtration removal
Mn²+ → Mn4+ forms insoluble manganese dioxide for removal
NH4? ? NO2? ? NO3? through biological nitrification
CO2 and H2S stripping improves water quality and taste
Two Design Approaches
Natural aeration tower with air-water injection mixer, cascade-splash grates, and exhaust fans. Achieves 8–11 mgO2/dm³ outlet aeration. Oxidises iron, manganese, and ammonium while removing aggressive CO2 and hydrogen sulphide more efficiently than pressure aeration.
8-11 mgO2/dm³ Outlet AerationMunicipal water treatment plants, groundwater treatment, iron and manganese removal facilities, drinking water production.
View Full SpecificationsCompact pressure aeration system with injector and controlled air bubble mechanism. Features compressed air recycling for efficiency. Achieves >8 mgO2/dm³ outlet aeration for iron, manganese, and ammonium oxidation with lower operating requirements than traditional solutions.
>8 mgO2/dm³ Outlet AerationIndustrial process water, small-scale treatment plants, retrofit applications, pre-treatment for filtration systems.
View Full SpecificationsChoose the Right Solution
Ideal for: Municipal plants, large facilities
Ideal for: Industrial, retrofit, limited space
Operational Advantages
Natural aeration towers require no compressed air, significantly reducing energy requirements compared to pressure aeration systems.
Effective iron, manganese, and ammonium removal ensures compliance with drinking water standards and discharge limits.
CO2 and H2S removal improves taste, reduces corrosivity, and enhances overall water quality for consumption.
Simple mechanical design with no complex components ensures reliable operation with minimal maintenance requirements.
SCADA Integration Available
Our aeration systems can be integrated with SCADA for automated blower control, dissolved oxygen monitoring, and water quality tracking. Optimise aeration efficiency and monitor treatment performance from a centralised interface.
In-depth engineering pages covering the science, equipment types and specialised applications of aeration.
Oxygen transfer rate, KLa, Henry’s Law and the alpha/beta/theta correction factors.
Read MoreSelection matrix for surface, diffused, cascade, Venturi and pure-oxygen systems.
Read MoreSediment oxygen demand, algae control and sizing for shallow ponds and basins.
Read MorePartial-mix and complete-mix lagoon design for high-BOD industrial effluent.
Read MoreVertical-shaft, paddle wheel, brush and floating mechanical aerators.
Read MoreFine vs coarse bubble, blower selection, alpha factor in dirty water.
Read MoreAerating raw-water reservoirs for iron/Mn oxidation and taste/odour control.
Read MoreWhere aeration integrates with MBBR, SBR, MBR and activated-sludge processes.
Read MoreIndustries We Serve
Aeration for demanding industrial wastewater applications treatment.
View Pre-Treatment SolutionsSix in-depth guides to the aeration equipment we design and supply — what each does best, and how we solve the problems each one is prone to.
Membrane disc/tube diffusers for high-efficiency oxygen transfer.
Mechanical surface and aspirating aerators for robust, retrofit duty.
Pumped jet and venturi systems for deep tanks and high mixing.
Low-speed mixers that keep solids in suspension with or without air.
Blower selection and DO-based air control for energy efficiency.
SOTR, alpha factor and comparing aerator efficiency on a like-for-like basis.
Mechanical surface and floating aerators — where they fit and how they are sized.
SOTE, alpha factor and how to specify and verify aeration performance.
Contact Our Engineers to discuss your iron, manganese, or ammonium removal requirements and find the optimal aeration solution.
Our expertise spans multiple industries with sector-specific water treatment solutions.