High levels of impurities are present in natural water, making a pretreatment system before reverse osmosis indispensable. A well-designed pretreatment system not only ensures long-term stable operation for subsequent equipment but also operates safely for an extended period. The choice of pretreatment depends on the water quality and includes multimedia filters, activated carbon filters, sediment filters, softeners, iron and manganese removal filters, and disc filters, among others.

1. Multi-Media Filter

Process Features: Multi-medium filter, also known as mechanical filter, primarily retains physical impurities in water, removing suspended matter, solid particles, and some colloidal substances.

Materials include: fiberglass, carbon steel (with internal anti-corrosion), and stainless steel SUS304 (lined with rubber for corrosion resistance), capable of meeting the production and process requirements of various industries.

Control Methods: Manual operation, semi-automatic, fully automatic (including automatic control valves, pneumatic valve groups, and electric valve groups, etc.).

Model and Specifications: Glass fiber specifications NCHJL-B-200-1500. Filter diameter ranges from 200-1500mm.

Carbon steel, Stainless Steel SUS304, specification NCHJL-T-200-3000. Filter diameter from 200-3000mm.

Based on your actual water usage, we will assist you in selecting the appropriate specifications and materials.

2. Active Carbon Filter

Process Features: Activated carbon filters are primarily used to absorb colors, tastes, residual chlorine, organic matter, and colloidal substances in water; they also serve to filter out large particle impurities. Pasteurization can be equipped to extend the service life of the activated carbon and reduce the growth of bacteria during the production process.

Materials include: fiberglass, carbon steel (with internal corrosion protection), and stainless steel SUS304 (lined with rubber corrosion protection), catering to the production and process requirements of various industries.

Control Methods: Manual operation, semi-automatic, fully automatic (with automatic control valves, pneumatic valve groups, and electric valve groups, etc.).

Model and Specifications: Glass Reinforced Plastic (GRP) NCHTL-B-200-1500. Filter diameter ranges from 200-1500mm.

Carbon steel, Stainless Steel SUS304 specification NCHJL-T-200-3000. Filter diameter from 200-3000mm.

3. Demineralizer

Process Features: The softener, also known as a sodium ion exchange unit, effectively removes Ca2+ and Mg2+ from the water during the production process, thereby reducing water hardness. This prevents the formation of carbonate and sulfate scale in the production process. The resin can be regenerated and reused. The softener can be used for boiler water softening and as a pretreatment for reverse osmosis.

Materials include: fiberglass, carbon steel (internal anti-corrosion), and stainless steel SUS304 (lined with anti-corrosion material), catering to various industry production and process requirements.

Control Methods: Manual Operation, Semi-Automatic, Full Automatic (with automatic control valves, pneumatic valve groups, and electric valve groups, etc.).

Model and Specifications: Glass Reinforced Plastic (GRP) NCHTL-B-200-1500. Filter diameter ranges from 200-1500mm.

Carbon steel, stainless steel SUS304, specification NCHJL-T-200-3000. Filter diameter: 200-3000mm.

4. Filter Cartridge, Filter Housing

Process Features: The filter, also known as fine filtration in the water system, is typically achieved by a 5µm aperture polypropylene (PP) membrane formed through meltblowing. Fine filtration is a pre-treatment process before the raw water enters the reverse osmosis membrane. Its function is to prevent any leakage from the previous filtration stage, ensuring the long-term stable operation of the reverse osmosis system.

Materials include: fiberglass, carbon steel, and SUS304 stainless steel, capable of meeting the production and process requirements of various industries.

Model and Specifications: Glass Fiber Reinforced Plastic (GFRP) specification NCHTL-B-200-1000. Filter diameter ranges from 200-1000mm.

Carbon steel, stainless steel SUS304, specification NCHJL-T-200-1500. Filter diameter from 200-1500mm.

Based on your actual water usage, we'll assist you in selecting the appropriate material and specifications.