Nov. 06, 2025
I. Core Structure and Filtration Advantages of Wedge Wire Filter Cartridges Wedge wire filter cartridges (also known as V-shaped wire filter cartridges) are made of wedge-shaped cross-section metal wires and supporting ribs welded together, forming a unique "V"-shaped slit filtration structure.
Their core advantages are:
High-precision and stable slits: The slit width can be precisely controlled between 5-2000 microns, with filtration accuracy far exceeding traditional woven mesh filter cartridges. The welded structure ensures the slits do not deform over a long period.
Excellent backwashing performance: The "V"-shaped cross-section ensures impurities adhere only to the filter cartridge surface. During backwashing, the water flow quickly washes away the impurities, eliminating the need for frequent replacements and extending service life.
High strength and corrosion resistance: Commonly used materials include 304/316L stainless steel and Hastelloy, capable of withstanding high temperatures (up to 400℃), high pressures (up to 3MPa), and acidic/alkaline media, making them suitable for harsh working conditions.
II. Main Application Areas and Specific Scenarios
1. Water Treatment: Core Applications for "Solid-Liquid Separation" and "Water Purification"
This is the most widespread application scenario for wedge wire filter cartridges, covering industrial wastewater, municipal sewage, drinking water, and special water treatment:
Industrial Wastewater Treatment: In industries such as chemical, metallurgical, and power, it filters suspended particles (such as iron powder, coal slag, and chemical precipitates) in wastewater, for example, in the filtration of circulating water in thermal power plants and the removal of slag from steel rolling wastewater, ensuring that subsequent treatment equipment (such as reverse osmosis membranes) does not become clogged;
Municipal Sewage Treatment: As a downstream filtration unit of sedimentation tanks, it removes activated sludge flocs from sewage, improving effluent transparency. In some scenarios, it can replace traditional sand filters, reducing the footprint;
Drinking Water Purification: In rural centralized water supply or emergency water supply systems in the wild, it filters sediment and algae from raw water. Combined with activated carbon, it can achieve preliminary purification;
Seawater Desalination Pretreatment: It filters plankton and sediment from seawater, protecting reverse osmosis membrane modules and reducing the risk of membrane fouling. 2. Food and Beverage Industry: Meets "Hygienic Grade Filtration" Requirements. Due to its food-grade material (e.g., 316L stainless steel) and ease of cleaning, it is widely used in: Liquid Filtration: Filtering malt residue and yeast in beer brewing; removing pulp residue in juice production; separating crystalline particles in syrup filtration to ensure product clarity; Solid Dehydration: Separating starch milk and water in starch production; filtering impurities in sucrose juice to improve product purity and yield. 3. Energy and Mining Sector: Adaptable to "High Load, High Impurity" Conditions. Oil and Gas Extraction: Removing silt and crude oil residue from oilfield wellhead reinjection water to prevent pipeline blockage; filtering dust and liquid impurities carried by gas in natural gas extraction to protect compressors; Mineral Processing: Filtering large particles in the slurry during metal ore (e.g., copper and iron ore) flotation to ensure uniform action of processing reagents and improve mineral recovery; filtering coal washing wastewater in the coal industry to recover coal slime resources.
4. Other Specialized Applications
Pharmaceutical Industry: Used for filtering traditional Chinese medicine extracts to remove dregs and insoluble components, or as a pretreatment filter for fermentation broth to ensure subsequent purification processes;
Environmental Solid Waste Treatment: Used in landfill leachate treatment to filter high-concentration suspended solids, reducing the load on subsequent biochemical treatment systems.
III. Usage Precautions
Selection and Matching: Appropriate slit width and material should be selected based on the particle size, temperature, and corrosiveness of the filter medium (e.g., 316L stainless steel is preferred for acidic media).
