Heavy-Duty Quartz Sand Filter

Our High-Efficiency Quartz Sand Filter is a robust, versatile water treatment solution designed to meet the demanding filtration needs of global municipal, industrial, and agricultural sectors. Crafted with high-purity natural quartz sand (SiO₂ content ≥99.6%) featuring precision-graded particle sizes (0.6-2.2mm), this filter effectively eliminates suspended solids, sediment, colloidal impurities, and fine particles from water, reducing turbidity from ≥110NTU to ≤3NTU with a removal rate of 99.2%+. Fully compliant with international standards such as ISO 9001, AWWA B100-19, and NSF/ANSI 61, it integrates seamlessly into various water treatment systems, from small-scale commercial facilities to large municipal water plants. With its durable construction, energy-efficient operation, and minimal maintenance needs, it delivers consistent, high-quality treated water while minimizing long-term operational costs.

Technical Features

Premium Precision-Graded Filter Media: Adopts high-purity natural quartz sand with a Mohs hardness of 7.3, exceptional chemical resistance (pH 1.8-11.8), and uniform particle size distribution. The multi-layer filter bed (1.1-1.5m thickness) forms a "coarse-to-fine" gradient structure, enabling efficient interception of impurities ranging from 2μm to 55μm, ensuring deep filtration and reducing the frequency of backwashing.

Stable & Adaptable Operation: Engineered to operate under a working pressure of 0.07-0.76MPa, an operating temperature of 4℃ to 56℃, and a filtration speed of 8-16m/h, with an empty bed contact time (EBCT) of 8-13 minutes. This design ensures reliable performance in diverse water conditions, including high-turbidity surface water, industrial process water, and agricultural irrigation water.

Intelligent Auto-Backwashing: Equipped with an advanced intelligent backwashing system that automatically detects filter bed saturation via real-time turbidity monitoring and pressure difference (≥0.07MPa). The air-water combined backwashing process (air pressure 0.05-0.07MPa, water pressure 0.15-0.21MPa) thoroughly cleans the filter media, restoring filtration capacity within 13-19 minutes, with backwash water consumption accounting for only 2.5-4.5% of total treated water, maximizing water conservation.

Robust & Flexible Design: Features a corrosion-resistant tank made of 316L stainless steel, food-grade FRP, or epoxy-lined carbon steel, with a service life of 15-21 years. The compact, modular design allows for easy installation, expansion, and disassembly without specialized tools. Optional intelligent functions include real-time performance monitoring, remote control via mobile APP, and maintenance alerts, enhancing operational convenience and reducing downtime.

Rigorous Quality Assurance: All components are manufactured from non-toxic, food-grade materials with full batch traceability. The quartz sand filter media has a service life of 5-8 years, significantly reducing replacement costs and environmental impact. The filter operates at ≤29dB, ensuring ultra-quiet performance that does not disrupt surrounding environments.

Technical Parameters Table

Advantages

Exceptional Filtration Efficiency: Removes 99.2%+ of suspended solids and reduces turbidity from ≥110NTU to ≤3NTU, delivering high-quality treated water. The precision-graded filter bed effectively captures impurities of all sizes, ensuring stable performance even in high-turbidity water environments.

Energy & Water Efficient: The low pressure drop (≤0.07MPa) design reduces energy consumption by up to 15% compared to conventional filters, while the intelligent backwashing system minimizes water waste, lowering operational costs and environmental impact.

Versatile & Expandable: Suitable for municipal water pre-treatment, industrial RO/UF pre-treatment, wastewater reuse, agricultural irrigation, and commercial water purification. It supports single-tank, multi-tank parallel, or series installation, accommodating flow rates of 1.5-820m³/h, and can be customized to meet specific water quality and capacity requirements.

Low Maintenance & User-Friendly: The robust construction requires minimal daily maintenance—only regular monitoring of effluent turbidity and pressure difference. The detachable filter media cartridge allows for quick and easy replacement, saving time and labor costs, while intelligent alerts prevent equipment failure.

Safe & Reliable: No chemical additives are used during filtration, eliminating the risk of secondary pollution. All materials meet food-grade and international safety standards, ensuring the treated water is safe for drinking, industrial processes, and environmental discharge. The corrosion-resistant tank ensures long-term stable operation in harsh industrial and outdoor environments.

Application Fields

1. Municipal Water Treatment

Ideal for pre-treatment of surface water and groundwater in municipal water plants, reducing turbidity, suspended solids, and colloidal particles to reduce the load on subsequent disinfection and advanced treatment processes. It is also widely used in community water supply systems, small-scale water treatment plants, and drinking water distribution networks to improve water quality and meet international drinking water standards.

2. Industrial Water Treatment

Widely used as pre-treatment for RO/UF systems in electronics, pharmaceuticals, power generation, petrochemical, and textile industries, protecting membrane equipment from fouling and extending its service life. It is also applied in circulating cooling water treatment, process water purification, and industrial wastewater pre-treatment to remove impurities and improve product quality and production efficiency.

3. Commercial & Residential Use

Suitable for swimming pool water treatment, removing algae, sediment, and suspended solids to maintain clear, hygienic water. It is also used in hotel water supply, commercial building water systems, residential water purification, and gym water facilities to improve water quality, reduce equipment maintenance costs, and ensure safe water use for users.

4. Agricultural & Special Applications

Applied in agricultural irrigation water treatment to prevent clogging of drip irrigation and sprinkler systems, improving water use efficiency and crop yield. It is also used in desalination pre-treatment, laboratory water purification, wastewater reuse systems, and mining water treatment to meet specific water quality requirements for different scenarios.

FAQ (Frequently Asked Questions)

What is the service life of the quartz sand filter, and how to determine the replacement time?The filter tank has a service life of 15-21 years, while the quartz sand filter media can be used for 5-8 years. Replacement is recommended when: the effluent turbidity exceeds 3NTU, the pressure difference between inlet and outlet is more than 0.07MPa, the backwashing effect is significantly reduced (filtration efficiency cannot be restored after repeated backwashing), or the filter media turns grayish-black and loses its original color.

Is professional installation required for the quartz sand filter?Residential and small commercial models are equipped with a detailed, user-friendly installation manual, allowing users to complete installation independently by connecting water pipes and securing the filter body. For large industrial models and multi-tank systems, professional installation is recommended to ensure operational stability and safety. We provide online installation guidance, video tutorials, and after-sales support to solve any installation issues.

What types of quartz sand filters are available, and how to choose the right one?We offer three main types of filters, tailored to different application scenarios. Details are shown in the following table:        Filter TypeKey FeaturesSuitable ScenariosFlow Rate RangeSingle-Layer Quartz Sand FilterSimple structure, low cost, easy maintenanceResidential, small commercial, low-turbidity water1.5-55m³/hMulti-Layer Quartz Sand FilterHigh filtration efficiency, wide impurity rangeIndustrial water treatment, high-turbidity water55-520m³/hModular Quartz Sand FilterHigh scalability, flexible combination, easy expansionLarge municipal water plants, industrial complexes520-820m³/h

What are the advantages of air-water backwashing compared to water-only backwashing?Air-water combined backwashing uses air bubbles to loosen and strip stubborn impurities attached to the filter media, achieving 35-55% higher cleaning efficiency and 25-35% less backwash water consumption compared to water-only backwashing. It also extends the service life of the filter media by 1-2 years, making it more suitable for high-turbidity water and industrial applications. Water-only backwashing is simpler to operate and more suitable for low-turbidity water and residential scenarios.

Is the quartz sand filter safe for drinking water treatment, and does it have relevant certifications?Yes, it is completely safe for drinking water treatment. All materials are non-toxic, food-grade, and comply with FDA Title 21 standards. We hold certifications including ISO 9001, AWWA B100-19, and NSF/ANSI 61, and provide full batch traceability for all components to ensure product safety and compliance with international drinking water standards.

Precision-Graded Quartz Sand Filter