Engineered system · Water & Wastewater Treatment
Aeration & Filtration Systems
Air and filtration, each with a job to do.
Aeration and filtration address different treatment needs. Selecting them together still requires a clear purpose for each stage.
Project vision
A pressure sand filter catches suspended solids and turbidity. An activated carbon filter follows it to take out chlorine, odour, colour and many organic chemicals, which stick to the huge internal surface of porous carbon granules. Together they are the first line of treatment for most borewell and municipal water, and they protect the equipment downstream.
Some groundwater carries more than dirt. Iron stains fittings and turns water brown, while fluoride and arsenic are not visible at all. A removal plant adds the right step for the problem: aeration or chemical oxidation followed by filtration for iron, or a selective adsorption media for fluoride and arsenic. Aeration has a second job too: blowers and diffusers transfer the oxygen that biological treatment needs. We test the water first, then design, supply, install and maintain the plant.
Illustrative application narrative · no completed installation or measured result is asserted.
Typical business & operational challenges
A typical operational situation
An unsuitable air-transfer arrangement or overloaded filter can make routine operation harder.
Our solution
Aeration & Filtration Systems is considered around the actual duty, available inputs and operating arrangement. The scope starts with aeration duty assessment. It also considers filter-media selection. It also considers hydraulic review. It also considers maintenance access.
Our approach
Define oxygen-transfer or aeration objective
Review suspended solids and filter duty
Select equipment and backwash arrangements
Verify operation under the agreed conditions
Features & deliverables
- Aeration duty assessment
- Filter-media selection
- Hydraulic review
- Maintenance access
Selection and inclusion are confirmed through the approved proposal and design.
Expected operational benefits
A clearer basis for aeration duty assessment and maintenance access, supported by an operating approach suited to the application. Actual performance depends on the final design, conditions and operation.
Technology options & engineering basis
Select equipment and backwash arrangements. Equipment, interfaces and operating requirements are selected after the input review.
Information to bring to the discussion
Source or process analysis, flow and load variation, target quality, space, utilities and operating constraints.
How it works, stage by stage
Raw water feed
A feed pump draws water from the borewell, tank or supply line and delivers it at steady pressure.
Aeration & oxidation
For iron removal, air or an oxidising chemical turns dissolved iron into solid particles that a filter can catch.
Pressure sand filter
Graded sand and gravel layers trap suspended solids, turbidity and the oxidised iron.
Selective media
Where needed, an adsorption media bed takes out fluoride or arsenic from the filtered water.
Carbon filter
Activated carbon removes chlorine, odour, colour and organic matter before the water moves on.
Backwash
Each filter is cleaned by reversing the flow, flushing trapped dirt to drain and restoring the bed.
Options
Aeration system
Blowers and diffusers, or cascade aerators, that transfer oxygen for iron oxidation or for biological treatment.
Pressure sand filter
Removes suspended solids and turbidity. Often the first stage before a carbon filter or a removal stage.
Activated carbon filter
Removes chlorine, odour, colour and organic chemicals by adsorption on porous carbon granules.
Iron removal plant
Oxidises dissolved iron so it can be filtered out, stopping brown water and stained fittings.
Fluoride removal plant
Passes water through a media that selectively holds fluoride, for groundwater where fluoride is a concern.
Arsenic removal plant
Uses a selective adsorption media to take arsenic out of groundwater before use.
Where it is used
- Borewell water
- Housing societies
- Hotels
- Hospitals
- Schools & campuses
- Biological treatment
- Industrial process water
Visual story
The needAir and filtration, each with a job to do. An unsuitable air-transfer arrangement or overloaded filter can make routine operation harder.
Read the full voiceover script
- The need Air and filtration, each with a job to do. An unsuitable air-transfer arrangement or overloaded filter can make routine operation harder.
- The response Aeration & Filtration Systems begins with the application. Define oxygen-transfer or aeration objective. Review suspended solids and filter duty.
- The work Select equipment and backwash arrangements. Then verify operation under the agreed conditions. The details belong to the agreed configuration and scope.
- The next step Start with aeration duty assessment, and define what success needs to look like. Discuss your application with ZEAL.
Questions before the next step
Does filtration remove dissolved salts?
Conventional media filtration primarily addresses suitable particulate loads; dissolved-contaminant removal needs a separately evaluated process.
What is needed for an enquiry?
Aeration duty assessment, application details, available records, site constraints and the required delivery scope.
Which filter do I need?
It depends on what is in your water. A water analysis tells us whether you need only sand and carbon filters or an added iron, fluoride or arsenic removal stage.
How often does the filter need backwashing?
That depends on how dirty the water is and how much you use. Automatic valves can backwash on a schedule or when the pressure drop rises, so nobody has to remember.
Does the filter media need replacing?
Sand lasts a long time with regular backwashing. Carbon and selective media lose capacity over time and are topped up or replaced, which we can handle under an AMC.
Bring us your application.
Share your requirement and the information you already have. ZEAL can help clarify the options and the information needed for the next step.