Sand Filtration Systems: Optimizing Industrial Water Quality

Introduction

In industries where water purity is critical, effective pre-filtration ensures uninterrupted operations, reduced maintenance, and extended equipment life. Since 2008, LEFILTER has been a leading Chinese manufacturer of high-performance sand filtration systems, delivering cost-efficient, reliable solutions for steel plants, power stations, chemical processing, and more.

Located in Xinxiang, Henan Province, our state-of-the-art factory enables direct production control, ensuring superior quality, rapid turnaround, and competitive pricing. Our engineered sand filters are specifically designed for industrial water pretreatment, effectively eliminating sediments, rust, algae, and other contaminants before they damage pipelines, nozzles, boilers, and heat exchangers.

The Critical Role of Sand Filtration in Industrial Water Systems

1. Preventing Equipment Damage & Downtime

Industrial water often contains abrasive particles, organic matter, and dissolved metals, which can:

Clog spray nozzles (e.g., in steelmaking oxygen lances)

Accelerate corrosion in boilers and cooling systems

Reduce heat transfer efficiency in exchangers

Increase energy consumption due to scaling

LEFILTER’s multi-layer sand filtration technology captures these impurities, ensuring clean, sediment-free water flow.

2. Key Advantages Over Conventional Filters

Higher dirt-holding capacity – Longer intervals between backwashing

Robust construction – FRP (fiberglass) or stainless steel tanks for harsh environments

Flexible automation – Manual, semi-auto, or fully automatic backwash control

Customizable media – Quartz sand, activated carbon, or anthracite for specific needs

Primary Industrial Applications

1. Steel Industry: Oxygen Lance & Cooling Water Protection

Steel production relies on high-pressure oxygen lances, where contaminated cooling water can cause:

Nozzle blockages → Reduced oxygen flow → Poor furnace efficiency

Corrosion & scaling → Frequent maintenance & replacements

LEFILTER’s solution:

Removes iron oxides, sand, and suspended solids

Ensures stable lance performance

Minimizes unplanned shutdowns

2. Power Plants & Boiler Feedwater Treatment

Impure feedwater leads to:

Scale buildup → Reduced heat transfer → Higher fuel costs

Corrosion damage → Pipe failures → Costly repairs

Our sand filters:

Trap silt, rust, and colloidal particles

Protect boiler internals

Improve thermal efficiency

3. Chemical Processing & Heat Exchanger Systems

Heat exchangers require clean water to maintain optimal thermal conductivity. Contaminants cause:

Fouling → Reduced efficiency

Increased pump workload → Higher energy use

LEFILTER’s filtration ensures:

Smooth heat exchange operations

Lower maintenance frequency

Longer equipment lifespan

Technical Highlights

1. Superior Filtration Media

Multi-grade quartz sand for deep-bed filtration

Optional activated carbon layer for organic removal

Anthracite support layer for enhanced dirt retention

2. Smart Control Options

Manual valves (economical choice)

Semi-automatic backwash (time or pressure-triggered)

Fully automatic PLC-controlled systems (for large-scale plants)

3. Custom Engineering Capabilities

Flow rates from 10 m³/h to 500 m³/h

Pressure ratings up to 10 bar

Special materials (SS316, duplex steel) for corrosive environments

Why Partner with LEFILTER?

✔ 16+ Years of Specialized Expertise – Trusted by global industrial clients.

✔ In-House R&D & Manufacturing – Strict quality control from raw materials to final testing.

✔ Faster Delivery – Ready stock & efficient production lines.

✔ Tailored Solutions – Modifications for unique operational demands.

✔ Competitive Factory Pricing – No intermediaries, better value.

Request a Custom Quote Today!

Upgrade your water pretreatment system with LEFILTER’s engineered sand filters—durable, efficient, and built for industrial demands.