Filters

Water filters provide an essential treatment stage for removing physical particles and selected chemical contaminants before water enters downstream purification, membrane or process systems.

Hydroxy supplies filters in different media configurations, vessel sizes, flow capacities and operating modes according to feed-water quality and treatment requirements.

Our filtration range includes systems for sediment removal, turbidity reduction, activated-carbon adsorption, iron removal, multimedia filtration and automatic backwashing.

Water Filtration

Filtration removes contaminants that can affect water clarity, downstream equipment and subsequent treatment performance. Typical filtration applications include

Suspended-Solids Removal
Turbidity Reduction
Sand & Sediment Removal
Chlorine Reduction
Taste & Odour Control
Colour Reduction
Iron Removal
Organic-Load Reduction
RO Pretreatment
Process-Water Pretreatment
Drinking-Water Treatment
Wastewater Polishing
Equipment Protection

The correct filtration system depends on what needs to be removed, how much is present and the required treated-water quality.

Key Selection Parameters

Filters should be selected according to the water analysis, contaminant loading and required service flow. Typical specification parameters include:

Feed-Water Quality
Required Flow Rate
Design Filtration Rate
Target Contaminant
Turbidity
Suspended-Solids Load
Media Type
Media Quantity
Media Bed Depth
Vessel Size
Inlet / Outlet Connection
Operating Pressure
Maximum Differential Pressure
Service Flow
Backwash Flow
Backwash Frequency
Automatic / Manual Operation
Control-Valve Configuration
Operating Temperature
Required Treated-Water Quality

For analytical instruments, the correct technology also depends on water chemistry, expected concentration range, fouling conditions and maintenance requirements.

Service & Backwash

Media filters periodically require backwashing to remove accumulated contaminants and restore filtration performance. Correct sizing therefore considers both:

Service Flow + Backwash Flow

An undersized backwash supply can reduce media cleaning effectiveness even when the filter performs adequately during normal service.

Products

Pressure Sand Filters

Reliable depth filtration for suspended solids and turbidity reduction.

Pressure Sand Filters use graded filtration media to trap suspended particles as water passes through the media bed under pressure. Periodic backwashing removes accumulated solids and restores filtration performance.

Typical Applications:

Borewell water, surface water, commercial water treatment, industrial pretreatment, RO pretreatment and treated-water polishing.

Multimedia Filters

Multi-layer filtration for higher solids loading and improved water clarity.

ultimedia filters use multiple layers of filtration media with different densities and particle sizes to provide progressive depth filtration. Compared with a single-media filter, the layered bed can provide greater solids-holding capacity and more effective use of the complete media depth.

Typical Applications:

Raw-water pretreatment, surface-water filtration, RO pretreatment, commercial water systems, industrial process water and utility-water treatment.

Activated Carbon Filters

Adsorption filtration for chlorine, taste, odour and selected organic contaminants.

Activated Carbon Filters contain granular activated-carbon media that adsorbs selected dissolved contaminants as water passes through the filter bed. They are particularly important where chlorine must be reduced before chlorine-sensitive downstream treatment.

Typical Applications:

Drinking water, RO pretreatment, process water, bottled-water systems, food & beverage water and final water polishing.

Iron Removal Filters

Media filtration for iron-containing groundwater and borewell water.

Iron Removal Filters are designed to remove oxidised iron particles from water after dissolved iron has been converted into a filterable form. Depending on feed-water chemistry, the system may use appropriate oxidation and specialised media.

Typical Applications:

Borewell water, groundwater, residential water systems, commercial buildings, hotels and industrial utility water.

Manganese Removal Filters

Specialised media filtration for manganese reduction.

Manganese Removal Filters use suitable oxidation and catalytic or specialised filtration media to reduce manganese from water. System performance depends strongly on pH, manganese concentration, oxidation conditions and selected media.

Typical Applications:

Groundwater, borewell water, drinking-water pretreatment and commercial or industrial water systems.

Dual-Media Filters

Combined media filtration for improved solids capture.

Dual-media filters use two selected filtration layers to provide better depth utilisation than conventional single-media filtration. The media arrangement can be selected according to the particle characteristics and filtration objective.

Typical Applications:

Surface-water treatment, industrial pretreatment, process water, RO pretreatment and clarified-water polishing.

Automatic Backwash Filters

Automated filtration with reduced routine operator intervention.

Automatic backwash filters use control valves or automated valve arrangements to initiate backwashing according to time, pressure differential or programmed operating conditions. Automation helps maintain more consistent filtration where frequent manual operation is impractical.

Typical Applications:

Commercial buildings, hotels, hospitals, industrial water systems, central filtration plants and high-capacity pretreatment.

High-Flow Commercial & Industrial Filters

Higher-capacity filtration for continuous water-treatment duty.

High-flow filters are engineered for applications requiring greater treatment capacity, larger media volumes and higher service flows than standard residential or light-commercial filters. They may be configured as single vessels, parallel vessels or skid-mounted filtration systems depending on required capacity.

Typical Applications:

Industrial process water, hotels, hospitals, manufacturing facilities, institutions, central utility systems and high-capacity RO pretreatment.

Specialty Media Filters

Application-specific filtration using selected treatment media.

Specialty Media Filters contain media selected for a defined water-quality problem rather than general sediment removal. The media configuration is determined by the target contaminant, water chemistry and required contact conditions.

Typical Applications:

Selected heavy-metal reduction, specific inorganic contaminants, specialised groundwater treatment and industrial process-water applications.