Corrosion-Resistant PP Wire-Wound Filter Cartridge: Electroplating Wastewater Pretreatment Heavy Metal Impurity Interception Cartridge
Product Introduction
This Corrosion-Resistant PP Wire-Wound Filter Cartridge is a professional filtration component custom-engineered for the pretreatment link of electroplating wastewater, manufactured with high-purity industrial-grade corrosion-resistant polypropylene (PP) wire as the core raw material and adopting advanced high-density spiral winding technology with optimized impurity interception structure. Tailored to the harsh characteristics of electroplating wastewater—including strong acidity/alkalinity, high heavy metal ion content, and mixed insoluble heavy metal particulate impurities—it serves as a key pretreatment barrier in electroplating wastewater treatment systems, dedicated to efficiently intercepting insoluble heavy metal-containing particulates, metal hydroxide flocs, and solid debris from electroplating wastewater. The all-corrosion-resistant PP integral structure features excellent chemical resistance to acidic plating waste, alkaline cleaning water, and various electroplating chemical residues, with no dissolution, material shedding or secondary pollution to the wastewater. It effectively reduces the content of insoluble heavy metal impurities in electroplating wastewater at the pretreatment stage, lightens the processing load of subsequent heavy metal removal and advanced treatment units (such as chemical precipitation, membrane separation and ion exchange), and ensures the stable and efficient operation of the entire electroplating wastewater treatment system while complying with industrial wastewater discharge standards.
Filtration Precision
The Corrosion-Resistant PP Wire-Wound Filter Cartridge is optimized for the interception demand of insoluble heavy metal impurities in electroplating wastewater pretreatment, with standard filtration precision grades covering 5 μm to 200 μm. The most commonly used specifications include 10 μm, 50 μm, 100 μm and 200 μm, which can be targeted to intercept different particle size insoluble heavy metal particulates (such as copper, nickel, chromium, zinc hydroxide flocs) and solid impurities (such as metal debris, plating sludge) in electroplating wastewater. Adopting a uniform and dense spiral winding process with graded pore size design, the filter layer has a highly consistent pore size distribution and strong impurity holding capacity, thoroughly removing insoluble heavy metal-containing solids from electroplating wastewater and preventing these impurities from clogging subsequent treatment equipment or interfering with the heavy metal chelation and precipitation reaction. This stable filtration performance ensures that the electroplating wastewater entering the subsequent treatment link meets the required inlet water quality standards, laying a solid foundation for efficient heavy metal removal and wastewater purification.
Flux
Benefiting from the optimized high-density spiral winding structure, corrosion-resistant PP wire material with excellent permeability and large effective filtration area design, this filter cartridge exhibits outstanding high-flux performance under the working condition of electroplating wastewater pretreatment filtration, perfectly adapted to the large-flow wastewater discharge characteristics of electroplating production lines. Under the standard operating conditions of 25℃ and 0.2MPa inlet pressure, the initial pure water flux of a single cartridge reaches 180-280 L/m²·h, and the actual stable working flux for electroplating wastewater pretreatment remains at 120-200 L/m²·h for a long time. Even in the filtration of high-turbidity electroplating wastewater with high solid content, the flux attenuation rate is relatively low, which can ensure the unobstructed discharge and treatment of electroplating wastewater, and avoid the reduction of wastewater treatment efficiency caused by insufficient filtration flux in the pretreatment link.
Salt Rejection Rate
As a dedicated pretreatment filtration component for electroplating wastewater, this corrosion-resistant PP wire-wound filter cartridge is designed for the efficient interception of insoluble heavy metal particulate impurities and solid flocs, and does not have the ion separation and rejection function of reverse osmosis, nanofiltration and other desalination membrane components. Its salt rejection rate is 0%, which means it only retains insoluble solid impurities containing heavy metals in electroplating wastewater while allowing all soluble heavy metal ions, inorganic salt ions, and water molecules to pass through the filter layer smoothly. This characteristic is fully in line with the core demand of electroplating wastewater pretreatment, which only needs to remove insoluble heavy metal solids at the primary stage, and the soluble heavy metal ions can be effectively captured and treated by subsequent chemical precipitation, ion exchange and other professional processes, realizing the step-by-step purification of electroplating wastewater.
Pressure Drop
The product is specially designed with an ultra-low pressure drop optimization structure for the filtration characteristics of high-turbidity and high-solid-content electroplating wastewater, fully considering the pressure loss control requirements of large-flow wastewater treatment systems. Under the rated working flux and standard temperature conditions, the initial pressure drop of a single filter cartridge is only 0.008-0.03 MPa, which minimizes the wastewater flow resistance in the electroplating wastewater pretreatment link and effectively reduces the energy consumption of the wastewater lift pump and circulation pump in the treatment system. During long-term continuous use, due to the high impurity-holding capacity and graded pore size design of the corrosion-resistant PP wire-wound filter layer, the pressure drop of the cartridge rises slowly and linearly; the maximum allowable operating pressure drop is 0.20 MPa. When the system pressure drop reaches this value, replacement is recommended in a timely manner to ensure the normal operating pressure of the entire electroplating wastewater treatment system, and avoid the impact of excessive pressure loss on the wastewater treatment process and equipment operation.
Molecular Weight Cutoff (MWCO)
This Corrosion-Resistant PP Wire-Wound Filter Cartridge has a targeted molecular weight cutoff range of 500,000 to 1,500,000 Daltons, which is specially calibrated for the interception demand of insoluble heavy metal macromolecular flocs in electroplating wastewater pretreatment. It can effectively intercept large molecular weight substances in electroplating wastewater such as heavy metal hydroxide macromolecular flocs (e.g., Cr(OH)₃, Cu(OH)₂), polymer organic flocs, and large-particle plating sludge aggregates that may cause damage and blockage to subsequent wastewater treatment equipment. The reasonable and wide MWCO control ensures that water molecules, soluble heavy metal ions and small molecular weight inorganic substances pass through the filter layer smoothly while realizing the efficient interception of all harmful large molecular weight insoluble heavy metal impurities, and provides reliable molecular-level pretreatment protection for the subsequent electroplating wastewater treatment units.
Membrane Thickness
The corrosion-resistant PP wire-wound filter layer of this cartridge adopts a multi-layer composite thickened spiral winding design with a uniform total effective filter layer thickness of 200-300 μm, and the diameter of the corrosion-resistant PP wire is precisely controlled to 0.2-0.4 mm to ensure the structural strength and high impurity-holding capacity of the filter layer. The inner and outer sides of the filter layer are equipped with high-strength corrosion-resistant PP mesh protective layers with a thickness of 90-110 μm each, and the inner skeleton is a reinforced industrial-grade PP support structure with high rigidity, excellent corrosion resistance and pressure resistance. The thickened and uniform filter layer thickness design not only ensures the sufficient mechanical strength and corrosion resistance of the filter cartridge, but also effectively improves the impurity-holding capacity for heavy metal flocs and plating sludge, adapting to the harsh working conditions of electroplating wastewater filtration. The high-quality corrosion-resistant PP raw material and precise winding process ensure that the filter layer has no material shedding, dissolution or deformation in strong acidic/alkaline electroplating wastewater for a long time, avoiding secondary pollution to the wastewater and meeting the strict filtration requirements of electroplating wastewater pretreatment.
Replacement Cycle
Under the normal operating conditions of electroplating wastewater pretreatment systems (wastewater turbidity ≤50 NTU, heavy metal solid content ≤100 mg/L, 24-hour continuous filtration, regular backwashing with clean water), the recommended replacement cycle of this Corrosion-Resistant PP Wire-Wound Filter Cartridge is 2-4 months. If the electroplating production load is high, the wastewater turbidity exceeds 50 NTU or the heavy metal solid content is higher than 100 mg/L due to process adjustment, the replacement cycle should be appropriately shortened to 1-2 months. In addition, when the pressure drop of the electroplating wastewater pretreatment link reaches the maximum allowable value of 0.20 MPa, or the filtration flux decreases significantly and cannot be restored after backwashing, the filter cartridge should be replaced immediately to ensure the interception effect of insoluble heavy metal impurities and avoid the blockage of subsequent wastewater treatment equipment (such as precision filters, membrane modules) caused by excessive solid impurities.
Features
- Superior corrosion resistance: All components are made of high-purity industrial-grade corrosion-resistant PP, resistant to strong acid, strong alkali and various electroplating chemical residues in electroplating wastewater, no dissolution or chemical reaction, long service life in harsh wastewater environment.
- Targeted heavy metal impurity interception: Optimized graded pore size and thickened filter layer design, dedicated to intercepting insoluble heavy metal hydroxide flocs, plating sludge and metal debris in electroplating wastewater, efficient solid-liquid separation.
- Ultra-high flux performance: Large effective filtration area and high-permeability PP wire material, adapted to the large-flow discharge demand of electroplating production lines, low flux attenuation rate in high-turbidity wastewater.
- Ultra-low pressure drop & energy saving: Optimized spiral winding structure, minimal initial pressure drop and slow pressure rise, reducing the energy consumption of wastewater lift pumps and circulation pumps, improving the overall energy efficiency of the wastewater treatment system.
- High impurity-holding capacity: Thickened multi-layer composite filter layer, large void volume for impurity storage, can adsorb a large amount of heavy metal flocs and plating sludge, extending the replacement cycle under normal working conditions.
- Strong mechanical strength: Reinforced PP inner skeleton and high-density protective mesh, resistant to wastewater flow impact, pressure fluctuation and the scouring of solid impurities, no deformation or damage under continuous operation.
- No secondary pollution: Precision winding process and high-quality corrosion-resistant PP raw material, no fiber, plastic or other debris shedding into electroplating wastewater, ensuring the purity of the pretreated wastewater.
- Easy installation & maintenance: Conforms to the universal installation standard of industrial wastewater treatment filter housings, simple disassembly and replacement, no special tools required, low maintenance cost of the pretreatment system.
- Cost-effective pretreatment solution: Low manufacturing cost, long service life and high filtration efficiency, effectively lightening the load of subsequent advanced treatment units and reducing the overall operation cost of electroplating wastewater treatment.
Application Fields
This Corrosion-Resistant PP Wire-Wound Filter Cartridge is a dedicated pretreatment component for electroplating wastewater heavy metal impurity interception, and is widely used in the electroplating industry’s wastewater treatment systems, covering various electroplating processes such as nickel, chromium, copper, zinc, gold and silver plating. In the decorative electroplating field, it is applied to the pretreatment of electroplating wastewater from hardware, furniture, auto parts and plastic electroplating production lines, intercepting insoluble heavy metal flocs and sludge in acid plating wastewater and alkaline cleaning wastewater. In the functional electroplating field, it is used for the pretreatment of high-concentration heavy metal wastewater from electronic component, aerospace and mechanical part electroplating production, including hard chromium plating wastewater, high-purity nickel plating wastewater and acid copper plating wastewater. It is also suitable for the pretreatment filtration of mixed electroplating wastewater from electroplating industrial parks, surface treatment workshops and electroplating waste recycling units, and can be matched with batch and continuous electroplating wastewater treatment systems. In addition, it can be applied to the pretreatment of other industrial wastewater containing insoluble heavy metal impurities such as metal smelting wastewater, hardware polishing wastewater and electroplating sludge leachate, with broad application prospects in heavy metal-containing industrial wastewater pretreatment.
Conclusion
To sum up, this Corrosion-Resistant PP Wire-Wound Filter Cartridge is a high-performance, professional dedicated filtration component custom-developed for the pretreatment link of electroplating wastewater, perfectly meeting the harsh chemical characteristics of electroplating wastewater and the core demand of insoluble heavy metal impurity interception. Its core advantages of superior corrosion resistance, targeted heavy metal solid interception, ultra-high flux, ultra-low pressure drop and high impurity-holding capacity perfectly solve the pain points of high solid content, heavy subsequent treatment load, equipment blockage and high energy consumption in electroplating wastewater treatment. The all-corrosion-resistant PP structural design ensures no secondary pollution to the wastewater, effectively intercepts insoluble heavy metal hydroxide flocs, plating sludge and metal debris in electroplating wastewater at the pretreatment stage, and significantly reduces the solid impurity content of the wastewater, thus lightening the processing load of subsequent chemical precipitation, membrane separation, ion exchange and other advanced treatment units, improving the efficiency of heavy metal removal and ensuring the stable operation of the entire electroplating wastewater treatment system. As a key pretreatment barrier of electroplating wastewater treatment systems, it not only helps electroplating enterprises meet the national industrial wastewater discharge and reuse standards, but also reduces the maintenance cost of subsequent high-value wastewater treatment equipment and the overall operation cost of the treatment system. With the characteristics of easy installation, low maintenance cost and strong environmental adaptability, it has become an indispensable core filtration component for the pretreatment of electroplating wastewater in the electroplating and surface treatment industry, providing a stable, efficient and cost-effective solid-liquid separation solution for the green and environmental protection production of electroplating enterprises.
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