30-inch PP wound filter cartridge: Filter cartridge for intercepting impurities in cooling circulating water and condensate treatment

This 30-inch PP wound filter cartridge is a high-performance industrial filtration component specially engineered for impurity interception in cooling circulating water and condensate treatment systems. Crafted from 100% high-purity polypropylene (PP) resin via a precision spiral winding process on a robust rigid PP inner support core, it forms a three-dimensional graded filtration structure with uniform pore distribution. Designed to adapt to the continuous operation characteristics of industrial circulating water systems, it efficiently intercepts solid particulate impurities in cooling circulating water and condensate, preventing pipeline scaling, equipment blockage and heat exchange efficiency reduction caused by impurities. The cartridge complies with industrial water treatment material standards, contains no adhesives or toxic additives, and is compatible with all standard 30-inch industrial filter housings in the market. It features easy installation and replacement, stable structural performance under long-term continuous operation, and is an essential core filtration component for optimizing the operation efficiency of industrial cooling and condensate treatment systems.

Targeted at the impurity characteristics of cooling circulating water and condensate, the filtration precision of this 30-inch PP wound filter cartridge is available in industrial mainstream specifications of 10 μm, 20 μm, 30 μm, 50 μm and 100 μm, with 20 μm and 50 μm being the most commonly used standard specifications. This precision range is scientifically designed to intercept the main impurities in industrial cooling circulating water and condensate, including sand grains, rust particles, scale debris, suspended solids and colloidal particulate impurities of corresponding particle sizes. The graded winding design ensures that the filtration precision is consistent throughout the cartridge body, realizing efficient and targeted interception of impurities without excessive flux loss, and perfectly matching the actual filtration demands of industrial circulating water systems with different water quality conditions.

Under the standard industrial operating conditions of 25℃ ambient temperature and 0.25MPa inlet pressure, the nominal flux of this 30-inch PP wound filter cartridge is 30-45 L/min (liters per minute) for the whole cartridge, with slight adjustments based on different filtration precision specifications. The 10 μm and 20 μm high-precision models have a nominal flux of 30-35 L/min, while the 30 μm, 50 μm and 100 μm models feature a higher nominal flux of 38-42 L/min and 40-45 L/min respectively. The large flux design is fully adapted to the high water flow demand of industrial cooling circulating water and condensate treatment systems, ensuring sufficient water supply for continuous system operation while maintaining stable impurity interception efficiency, and avoiding the problem of insufficient water flow in the circulating system caused by low filter cartridge flux.

As a physical filtration component dedicated to solid particulate impurity interception in industrial water systems, this 30-inch PP wound filter cartridge is not designed with ion separation or salt rejection functionality, and thus has no salt rejection rate index. Its core filtration principle is to intercept impurities based on particle size; all dissolved inorganic salts, metal ions, small molecule soluble substances and mineral components in cooling circulating water and condensate can pass through the cartridge body smoothly. This functional positioning is consistent with the core demand of cooling circulating water and condensate treatment—focusing on removing particulate impurities that affect system operation, without changing the soluble ion composition of the water body, and avoiding unnecessary interference with the water quality balance of industrial circulating water systems.

The initial pressure drop of a new 30-inch PP wound filter cartridge under the standard nominal flux and 25℃ operating temperature is ≤0.03MPa, which is far lower than the pressure drop limit of industrial cooling circulating water and condensate treatment systems, ensuring minimal pressure loss of the water body in the filtration link. With the long-term continuous operation of the system, as particulate impurities are continuously intercepted and accumulated on the surface and inside of the cartridge body, the pressure drop will gradually rise. The recommended maximum operating pressure drop of this cartridge is 0.15MPa; when the pressure drop reaches this value, the cartridge must be cleaned or replaced in time to avoid excessive pressure loss in the circulating water system, which will lead to increased energy consumption of water pumps and reduced operation efficiency of heat exchange equipment.

This 30-inch PP wound filter cartridge adopts a particle size-based physical filtration mechanism, which is essentially different from membrane filtration components such as ultrafiltration, nanofiltration and reverse osmosis that filter substances according to molecular weight. Therefore, it has no specific Molecular Weight Cutoff (MWCO) index. Its interception effect is only aimed at solid particulate impurities with particle sizes larger than its set filtration precision; macromolecular organic substances, colloids and other substances in cooling circulating water and condensate can pass through the cartridge body as long as their actual particle size is smaller than the filtration precision, which is fully in line with the filtration demand of industrial circulating water systems that only need to remove large particulate impurities.

The effective PP filtration layer thickness of this 30-inch PP wound filter cartridge is 10-15mm, which is thickened and optimized for industrial long-term continuous operation demands, and the total outer diameter of the cartridge body is the industry standard 63mm/70mm/90mm, perfectly matching the internal size of 30-inch industrial filter housings of different specifications. The thickened effective filtration layer not only provides a larger impurity holding capacity, effectively delaying the rise of pressure drop and reducing the frequency of cleaning and replacement, but also forms a multi-layer stepped filtration structure, which can intercept different particle size impurities step by step and improve the overall filtration efficiency of the cartridge. The inner support core is made of high-strength rigid PP material with a thickness of 4-5mm, which can withstand the maximum operating pressure of 0.8MPa without deformation or rupture, fully adapting to the pressure fluctuation characteristics of industrial cooling circulating water systems during operation.

The recommended standard replacement cycle of this 30-inch PP wound filter cartridge is 3-6 months when applied to industrial cooling circulating water and condensate treatment systems with continuous 24-hour operation. The actual replacement cycle is closely related to the impurity content and turbidity of the water body: for cooling circulating water with high suspended solid content and turbidity (NTU＞10) in heavy industry scenarios such as steel, chemical and power generation, the replacement cycle is shortened to 3-4 months; for condensate and cooling circulating water with relatively clean water quality (NTU＜5) in light industry and commercial central air conditioning systems, the replacement cycle can be extended to 5-6 months. In addition, the replacement cycle is also determined by the system pressure drop—once the pressure drop reaches the 0.15MPa limit, the cartridge must be replaced immediately regardless of the actual use time, to ensure the stable and efficient operation of the entire circulating water and condensate treatment system. Regular backwashing can appropriately extend the replacement cycle of the cartridge by 1-2 months under the premise of ensuring filtration efficiency.

This 30-inch PP wound filter cartridge has a number of professional performance features adapted to cooling circulating water and condensate treatment scenarios: 1. High-purity industrial PP raw material: Adopts 100% food-grade and industrial-grade dual-standard PP resin, acid and alkali resistant (adapt to water pH value 1-14), corrosion resistant to most inorganic and organic solvents in industrial circulating water, with excellent chemical stability and long service life under continuous operation; 2. Adhesive-free integral winding: No adhesives or binders are used in the production process, avoiding the dissolution of harmful substances into the water body and preventing secondary pollution of industrial circulating water, while ensuring the structural firmness of the cartridge and no delamination during long-term operation; 3. Super large impurity holding capacity: Thickened filtration layer and three-dimensional graded filtration structure realize large-capacity impurity storage, effectively delaying pressure drop rise and reducing the frequency of cleaning and replacement, saving industrial operation and maintenance costs; 4. Pressure resistance and anti-deformation: High-strength thickened PP inner support core can withstand high pressure and pressure fluctuation, no deformation or rupture under 0.8MPa operating pressure, adapting to the harsh operating environment of industrial systems; 5. Large flux design: The 30-45 L/min nominal flux is fully adapted to the high water flow demand of industrial circulating water systems, ensuring continuous and stable water supply; 6. Standard industrial compatibility: Matches all industry standard 30-inch filter housings (PP plastic/304/316 stainless steel), with unified installation specifications, easy disassembly and replacement, and no need for professional tools, reducing operation and maintenance time; 7. Backwashable performance: The rigid winding structure supports physical backwashing with clean water or compressed air, which can remove surface accumulated impurities and appropriately extend the service life of the cartridge; 8. Environmental protection and recyclable: The whole cartridge is made of single PP material, easy to recycle and harmless treatment, in line with the green and low-carbon operation requirements of modern industry.

This 30-inch PP wound filter cartridge is a dedicated filtration component for impurity interception in cooling circulating water and condensate treatment, and its core application fields cover all industrial and commercial scenarios with circulating water and condensate treatment systems: 1. Industrial cooling water systems: Applied to the filtration of circulating cooling water in steel, chemical, petrochemical, power generation, metallurgy and machinery manufacturing industries, intercepting impurities to protect cooling towers, heat exchangers, water pumps and pipeline systems; 2. Central air conditioning cooling systems: Used for the filtration of cooling circulating water in central air conditioning systems of high-rise buildings, shopping malls, office buildings and hotels, preventing pipeline scaling and improving the heat exchange efficiency of air conditioning equipment; 3. Condensate treatment systems: Applied to the condensate filtration in thermal power plants, nuclear power plants and industrial boiler systems, removing particulate impurities in condensate to improve water reuse rate and reduce water supply costs; 4. Refrigeration system circulating water: Used for the filtration of cooling circulating water in industrial refrigeration and cold storage systems, ensuring the stable operation of refrigeration compressors and evaporators; 5. Chemical process circulating water: Applied to the filtration of process circulating water in chemical and pharmaceutical production, intercepting solid impurities in the water body to avoid affecting the purity of chemical raw materials and product quality; 6. Food and beverage industry cooling water: Used for the filtration of cooling circulating water in food, beverage and beverage production, complying with food-grade material standards and ensuring the safety of production water; 7. Electronics industry cooling water: Applied to the filtration of cooling circulating water in electronic chip manufacturing and semiconductor production, removing fine particulate impurities to avoid affecting the precision of electronic equipment.

In summary, this 30-inch PP wound filter cartridge is a high-performance, professional industrial filtration component specially developed for impurity interception in cooling circulating water and condensate treatment systems, and is a key core component to ensure the stable, efficient and low-energy operation of industrial circulating water and condensate treatment systems. Its design is fully tailored to the operating characteristics and filtration demands of industrial cooling and condensate systems, including the industrial-specific filtration precision range of 10-100 μm, super large flux of 30-45 L/min, thickened filtration layer with super large impurity holding capacity and high-strength pressure-resistant structure. It can efficiently and continuously intercept various particulate impurities in cooling circulating water and condensate, fundamentally avoiding pipeline scaling, equipment blockage and heat exchange efficiency reduction caused by impurities, and effectively extending the service life of industrial water treatment equipment and circulating system components. Made of high-purity industrial PP raw materials with an adhesive-free winding process, it ensures no secondary pollution of the water body and complies with the dual standards of industrial and food-grade water treatment materials, adapting to the diverse water quality requirements of different industries. With the advantages of standard industrial compatibility, easy installation and replacement, backwashable performance and environmental protection recyclability, it is widely applicable to various industrial and commercial cooling circulating water and condensate treatment scenarios, can significantly reduce the operation and maintenance costs of the system, improve the overall operation efficiency of the system, and is the first choice for filtration of industrial cooling circulating water and condensate treatment systems with high water flow and long-term continuous operation demands.

The matching related products of this 30-inch PP wound filter cartridge are all core components and supporting equipment of industrial cooling circulating water and condensate treatment systems, forming a complete industrial water treatment filtration product system: 1. 30-inch melt-blown PP filter cartridge: An alternative filtration component for this wound filter cartridge, with a more compact filtration structure, suitable for cooling circulating water with high fine suspended solid content; 2. 30-inch industrial filter housings: Special supporting equipment for this cartridge, including high-pressure 304/316 stainless steel filter housings (for heavy industrial high-pressure systems) and food-grade PP plastic filter housings (for light industry and commercial systems), with standard 30-inch installation size and single/multi-core specifications; 3. Circulating water treatment chemicals: Including scale inhibitors, corrosion inhibitors, flocculants and bactericides, matching with this cartridge to further optimize the water quality of cooling circulating water, prevent scaling and corrosion, and reduce the impurity content of the water body; 4. Backwashing equipment: Including high-pressure backwash pumps, air compressors and backwash pipelines, used for the physical backwashing of this cartridge, extending its service life; 5. Water quality monitoring instruments: Including turbidity meters, pressure gauges, flow meters and suspended solid detectors, real-time monitoring of the water quality of circulating water systems and the operating status of the filter cartridge, facilitating timely replacement and maintenance; 6. Same series PP wound filter cartridges: Including 10-inch, 20-inch and 40-inch specifications of the same series, adapted to the filtration demands of cooling circulating water and condensate treatment systems with different water flow and filter housing specifications; 7. Pipeline filtration accessories: Including filter housing silicone gaskets, stainless steel quick connectors, ball valves and Y-type pre-filters, used for the installation, sealing and primary filtration of the cartridge and filter housings, improving the overall filtration effect of the system; 8. Bag filter housings and filter bags: Large-flow filtration equipment matching with this cartridge, used for the primary coarse filtration of cooling circulating water with high impurity content, reducing the filtration load of the PP wound filter cartridge.