Water Filter bag
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Dewatering Filter Bag for Removing Sediment and Pollutants
A dewatering filter bag is a filtration component specifically designed to separate solid sediments, suspended matter, and pollutants from liquids, widely used in industrial wastewater treatment, municipal sludge dewatering, mining tailings processing, and other scenarios. Its core function is to achieve solid-liquid separation through efficient interception and dewatering, reducing the solid content in liquids or minimizing sludge volume.I. Core Characteristics and Working Principle
1. Key Materials and Structure
- Materials:
- Primarily made of polypropylene (PP) or polyester (PET) fibers, offering acid-alkali resistance and wear resistance;
- Special scenarios (e.g., high temperature, strong corrosion) may use nylon (PA) or polytetrafluoroethylene (PTFE).
- Structural Design:
- Multi-layer composite filter cloth: Coarse outer layer intercepts large particles, while a fine inner layer captures tiny impurities to improve dewatering efficiency;
- High-strength stitching: Reinforced stitching on bag openings and edges prevents tearing during filtration.
2. Working Principle
- Filtration Stage: Sewage containing sediments enters the filter bag, where solid particles are trapped by the filter cloth, and water drains through the cloth pores;
- Dewatering Stage: External forces (e.g., pressure, vacuum, or gravity) squeeze the bag to further extract water from between particles, forming a filter cake with a moisture content of 50–80% (depending on the application).
II. Main Application Scenarios
1. Industrial Wastewater Treatment
- Scenarios: Heavy metal ion precipitates (e.g., copper hydroxide, iron hydroxide), slag particles in wastewater from chemical, metallurgical, and electroplating industries;
- Role: Reduces SS (suspended solids) concentration in wastewater to meet subsequent treatment or discharge standards, while recovering valuable metal particles.
2. Municipal and Environmental Engineering
- Scenarios: Sludge thickening tanks in wastewater treatment plants, river dredging slurry, construction piling wastewater, etc.;
- Role: Rapidly separates water from slurry, reducing sludge volume (volume reduction ratio up to 3:1) and lowering transportation and disposal costs.
3. Mining and Quarrying Industry
- Scenarios: Dewatering of tailings slurry, ore washing wastewater treatment, mine pit drainage purification, etc.;
- Role: 截留 ore particles and heavy metal pollutants, enabling water recycling and reducing environmental risks in tailings ponds.
4. Food and Chemical Industries
- Scenarios: Separation of fruit pulp residues in food processing wastewater, crystallization products in chemical reactions, etc.;
- Role: Recovers solid raw materials (e.g., starch, sugar residue) while purifying wastewater.
III. Key Selection Parameters
1. Filtration Precision and Pore Size
- Precision Range: Typically 5–200 microns, matched to sediment particle size:Pore Size Distribution: Choose surface filtration (uniform pores) or deep filtration (gradient pores). The former suits uniform particle 污水，while the latter fits complex water with multiple particle sizes.
- Coarse particles (e.g., sand): 50–200 microns;
- Fine suspended matter (e.g., colloids): 5–50 microns.
2. Dewatering Performance Indicators
- Water Permeability: Water flux per unit filter cloth area (L/m²·h). Higher permeability speeds up filtration but requires balancing with interception efficiency;
- Water Retention: The ability to retain water in the filter cake. Poor water retention improves dewatering efficiency (e.g., when used with flocculants).
3. Pressure Resistance and Strength
- Operating Pressure: Matches the pressure type of dewatering equipment (e.g., plate-and-frame filter presses can reach 0.6–1.0MPa, while vacuum filtration uses negative pressure);
- Tear Resistance: Select filter cloth with warp and weft tensile strength ≥1500 N/m to avoid damage under high pressure.
4. Chemical Compatibility
- pH Tolerance:Solvent Resistance: Choose PET or PTFE for oily wastewater to prevent PP from swelling and damaging.
- PP material: Suitable for pH 1–14 (resistant to strong acids and alkalis);
- PET material: Suitable for pH 4–10 (resistant to weak acids and alkalis, not concentrated acids).
IV. Supporting Equipment and Processes
1. Common Dewatering Equipment
- Plate-and-Frame Filter Press: Exerts hydraulic pressure to squeeze filter bags, suitable for high-concentration slurry dewatering with low filter cake moisture content (≤60%);
- Vacuum Filter: Uses negative pressure to suction water, suitable for fine-particle sludge with high processing efficiency but higher energy consumption;
- Centrifugal Filter: Separates solid-liquid via centrifugal force, suitable for uniform particle sediments with small footprint.
2. Pretreatment Processes
- Flocculant Addition: Adds polyaluminum chloride (PAC) or polyacrylamide (PAM) to sewage to agglomerate fine particles into large flocs, improving filter bag interception efficiency and dewatering speed;
- Pre-Filtration: Uses coarse filter bags (e.g., 200 microns) to remove large particles, protecting fine filter bags and extending service life.
V. Maintenance and Environmental Considerations
1. Maintenance Tips
- Cleaning Frequency:Damage Inspection: Regularly check stitching and the bottom of the bag, and replace promptly if damage is found to prevent material leakage.
- Reusable filter bags: Backwash with high-pressure water after each dewatering to remove residual particles in filter cloth pores;
- Disposable filter bags: Replace immediately when saturated to avoid clogging and reduced filtration efficiency.
2. Environmental Treatment
- Filter Cake Disposal: Filter cakes with high heavy metal content must be treated as hazardous waste (e.g., stabilized landfilling); general industrial filter cakes can be used for brick-making, landfilling, or incineration;
- Filter Bag Recycling: Choose recyclable materials (e.g., PP, PET) and send them to professional recycling companies to reduce white pollution.
VI. Comparison with Other Filtration Methods
Filtration Method Applicable Solid Content Post-Dewatering Moisture Content Cost (¥/ton of wastewater) Advantages Dewatering Filter Bag 5–50 g/L 50–80% 5–15 Low cost, simple operation Membrane Separation ≤5 g/L 90–95% 20–50 High precision, high automation Centrifugal Separation 10–100 g/L 60–85% 10–20 High efficiency, small footprint Selection Advice: Prioritize dewatering filter bags for medium-to-high solid content wastewater (>10 g/L), especially in cost-sensitive or mobile operation scenarios (e.g., emergency drainage, temporary construction wastewater treatment). For further optimization, provide parameters such as sewage composition and treatment volume to customize filter bag specifications and processes. - Materials:
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bag filters for water treatment
Bag filters are commonly used filtration devices in the water treatment field. They intercept suspended solids, colloids, particulate impurities, etc., in water through built-in filter bags, featuring simple structure, high filtration efficiency, and convenient maintenance. Below is key information and application highlights:I. Core Components and Working Principle
1. Main Structure
- Filter Housing: Mostly made of stainless steel (e.g., 304/316L) or engineering plastics, pressure-resistant and corrosion-resistant, with inlet, outlet, and filter bag chamber.
- Filter Bag: Constructed from synthetic fibers like polypropylene (PP) or polyester (PET), with precision ranging from 1–500 microns, fixed inside the filter via a top ring.
- Support Basket: Secures the filter bag to prevent deformation during filtration and guides uniform water flow through the filter media.
2. Working Principle
- Water to be treated flows into the filter through the inlet. As it passes through the filter bag, impurities are trapped inside the bag, while clean water exits through the outlet via filter bag pores.
- When the filter bag is saturated with contaminants (judged by inlet-outlet pressure difference, e.g., >0.1MPa), the bag needs replacement without disassembling the entire system.
II. Main Types and Characteristics
1. Classification by Housing Type
Type Characteristics Application Scenarios Single-bag filter Contains only 1 filter bag, compact structure, small flow rate (5–50 m³/h), low cost. Small systems, laboratories, household water purification Multi-bag filter Can install 2–24 filter bags in parallel, large flow rate (up to 500 m³/h), requires manifold design. Industrial water treatment, municipal water supply (large systems) Top-inlet/side-inlet Different inlet positions; top-inlet ensures more uniform water flow, while side-inlet suits space-constrained scenarios. Selected based on installation space 2. Classification by Pressure Rating
- Low-pressure type: ≤0.3MPa, suitable for normal or low-pressure scenarios (e.g., municipal tap water filtration).
- Medium-high pressure type: 0.6–1.6MPa, ideal for high-pressure systems like industrial circulating water or RO pretreatment.
III. Advantages and Limitations
Advantages
- Flexible filtration precision: Can meet various needs from coarse to fine filtration by replacing filter bags of different precisions (1–500 microns).
- High dirt-holding capacity: Deep filter bag structure retains more impurities, extending replacement cycles (30–50% higher dirt capacity than cartridge filters).
- Low maintenance cost: Filter bags can be replaced without professional tools, with low individual bag cost (¥10–200), minimizing downtime.
- High compatibility: Suitable for various water qualities (acidic/alkaline liquids, oily wastewater, high-temperature water) via material selection for bags and housings.
Limitations
- Higher pressure loss: Deep filtration structure causes greater water flow resistance than precise filtration methods like membrane filtration.
- Low automation level: Requires manual monitoring of pressure difference or regular bag replacement, unsuitable for unmanned scenarios (can be improved with automatic pressure alarms).
IV. Typical Application Scenarios
1. Industrial Water Treatment
- Circulating cooling water filtration: 截留 algae, sediment, rust, etc., to prevent heat exchanger blockage and extend equipment life.
- Chemical wastewater pretreatment: Removes suspended solids and colloids for subsequent biochemical or membrane treatment.
- Metalworking fluid filtration: Filters metal chips and sludge from cutting fluids for recycling.
2. Municipal and Civil Applications
- Waterworks pretreatment: Further removes fine particles after sedimentation to improve water clarity.
- Sewage plant deep filtration: Serves as a post-secondary clarifier unit to reduce effluent SS (suspended solids) concentration for compliance.
- Commercial/household water purification: Used in pool filtration, direct drinking water pretreatment (with activated carbon filter bags), etc.
3. Special Industry Applications
- Food and beverage industry: Filters impurities from syrups and alcoholic beverages to meet hygiene standards (requires FDA-certified food-grade filter bags).
- Pharmaceutical and electronics industry: Prepares high-purity water by intercepting particulate contaminants for reverse osmosis (RO) or EDI systems.
V. Selection and Maintenance Tips
1. Key Selection Parameters
- Flow rate and number of filter bags: Choose single or multi-bag filters based on system flow. A single No. 2 filter bag (810mm length) handles ~30 m³/h at 50-micron precision.
- Material compatibility:Precision selection: Based on impurity particle size (e.g., ≤5 microns for RO pretreatment, 50–100 microns for coarse filtration).
- Acidic liquids: PP filter bag + stainless steel housing;
- Oily wastewater: PET filter bag + anti-corrosion coated housing;
- High-temperature liquids (>80℃): high-temperature-resistant PET filter bag.
2. Maintenance Recommendations
- Replacement cycle:
- Normal water quality: Replace every 1–3 months (pressure difference-dependent);
- High-turbidity water: Inspect weekly and replace immediately when pressure difference reaches 0.1MPa.
- Operation notes:Environmental treatment: Prioritize degradable filter bags or centralized recycling for disposable bags to reduce pollution.
- Relieve pressure before replacing bags to avoid high-pressure water impact;
- Ensure the bag’s sealing ring tightly fits the filter to prevent bypass flow.
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How to select water filter bags suitable for specific water treatment needs?
Choosing the right water filter bags for specific water treatment requirements requires comprehensive consideration of water quality characteristics, treatment objectives, system parameters, and application scenarios. Below is a detailed selection process and key considerations:I. Clarify water quality and treatment objectives
1. Analyze water source impurity characteristics
- Particle types: Suspended solids (e.g., sediment, rust), colloids (e.g., clay, microorganisms), oils, or specific pollutants (e.g., metal ions, organic matter).
- Particle size: Determine the main impurity particle size range through water quality testing (e.g., coarse particles >50 microns, fine particles <10 microns).
- Chemical properties: Liquid acidity/alkalinity (pH value), corrosiveness (e.g., chloride ions, strong oxidizers), and temperature (normal or high-temperature environments).
2. Define filtration goals
- Precision requirements: Target filtration accuracy (e.g., drinking water ≤5 microns, industrial circulating water up to 50 microns).
- Treatment volume: Water flow rate per unit time (e.g., 10 m³/h, 100 m³/h), affecting filter bag size and quantity.
- Impurity interception capacity: Concentration of contaminants to be intercepted (high-turbidity water sources require high dirt-holding capacity filter bags).
II. Core selection parameters
1. Filtration precision (critical parameter)
- Precision range: Common filter bag precisions range from 1–500 microns, selected based on impurity particle size.Note: Excessively high precision may cause rapid clogging; balance filtration efficiency with flow rate.
- Examples:
- Swimming pool water filtration: 20–50 microns (removes hair, sediment).
- Pre-treatment for electronic-grade ultrapure water: 1–5 microns (intercepts tiny particles).
- Chemical wastewater oil removal: 10–25 microns (paired with demulsification processes).
- Examples:
2. Material compatibility
- Common materials and applications:
Material Corrosion resistance Temperature resistance Typical applications Polypropylene (PP) Resistant to acids, alkalis, salt solutions ≤80℃ Industrial wastewater, municipal sewage, food processing Polyester (PET) Resistant to oil and general solvents ≤120℃ Lubricating oil filtration, oily wastewater treatment Nylon (PA) Resistant to strong alkalis, wear-resistant ≤90℃ High-turbidity water sources, metalworking fluid filtration - Selection principles:
- Choose PP material for acidic liquids and PA or PET for alkaline liquids.
- Select PET or special high-temperature-resistant fibers for high-temperature environments (e.g., boiler water).
3. Filter bag size and structure
- Specification categories:
- No. 1 bag: Diameter 110mm, length 380mm, flow rate ~5–15 m³/h (common in small systems).
- No. 2 bag: Diameter 180mm, length 810mm, flow rate ~20–50 m³/h (mainstream for medium-to-large systems).
- Others: No. 3 bags, No. 4 bags, or non-standard custom sizes.
- Structural design:
- Monofilament filter cloth: Smooth surface, easy to clean, suitable for intercepting large particles (coarse filtration).
- Multifilament/needle-punched filter cloth: Deep filtration, high dirt-holding capacity, suitable for fine particle filtration.
- Reinforced ring design: Stainless steel or plastic rings at the top to prevent bag mouth tearing and improve pressure resistance.
4. Pressure resistance and flow matching
- System pressure: Filter bags must withstand ≥ system operating pressure (typically 0.1–0.6MPa); use thickened materials or metal frame supports for high-pressure scenarios.
- Flow calculation:
- A single No. 2 bag at 50-micron precision has a flow rate of ~30 m³/h; for a 100 m³/h system, parallel 4 bags (with redundancy).
III. Other key factors
1. Dirt-holding capacity and replacement cycle
- Dirt-holding capacity: Total amount of impurities a filter bag can retain (unit: g/bag); high capacity reduces replacement frequency.
- Estimation method:
- For known suspended solids concentration (e.g., 500 mg/L) and total treatment volume (e.g., 1000 m³), total impurity weight = 500 mg/L × 1000 m³ = 500 kg.
- If a single filter bag holds 5 kg, it needs to be replaced 100 times per cycle, or increase the number of filter bags to reduce frequency.
2. Environmental protection and cost
- Disposable vs. washable:Material recyclability: Prioritize recyclable PP/PET materials to reduce plastic pollution.
- Disposable filter bags: Low cost (~¥10–50/bag), suitable for complex impurities or non-washable scenarios.
- Washable filter bags: Higher cost (~¥200–500/bag) but reusable, ideal for high-value liquids or strict environmental requirements.
3. Compatibility with supporting equipment
- Filter type: Must match filter bag size (e.g., No. 1 bag for small filters, No. 2 bag for standard filters).
- Sealing method: O-ring or flange sealing to ensure no leakage.
IV. Selection process example
Scenario: A food factory needs to filter production water containing sediment (particle size 20–100 microns), with a flow rate of 50 m³/h and normal-temperature neutral water.- Precision selection: Intercept particles >20 microns, choose 25-micron precision filter bags.
- Material selection: Neutral water, choose economical and durable PP material.
- Size selection: Single No. 2 bag flow rate 30 m³/h, require 2 bags in parallel (total flow 60 m³/h to cover 50 m³/h demand).
- Structure selection: Needle-punched filter cloth (deep filtration, high dirt-holding capacity) with stainless steel reinforcing rings.
- Replacement cycle: Estimated daily treatment volume 400 m³, inlet suspended solids concentration 200 mg/L, daily impurity total 80 kg; single bag dirt-holding capacity 5 kg, requires daily replacement of 2 bags (or replace every 2 days with spare bags).
V. Notes
- Testing and verification: For high-requirement scenarios (e.g., pharmaceuticals, electronics), test with sample filter bags first to confirm filtration efficiency and service life.
- Supplier qualification: Choose ISO-certified manufacturers to ensure filter bags meet hygiene standards (e.g., food-grade requires FDA certification).
- Emergency plans: Stock spare filter bags to avoid system downtime; regularly inspect for damage (replace immediately if pressure drop surges).
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Water filter bag,Do water filter bags work?
A water filter bag is a filtration component used in the water treatment field, primarily designed to intercept suspended solids, colloids, particulate impurities, etc., in water to purify the water quality or meet specific process requirements. Its materials are typically corrosion-resistant and wear-resistant synthetic fibers such as polypropylene (PP) and polyester (PET), which are made into filter fabrics of different precisions through needle punching, weaving, or other processes, and then sewn into a bag-like structure.Main Features
- Diverse Filtration Precisions
- The precision range typically spans 1–500 microns. Filter bags with different pore sizes (e.g., 10 microns, 50 microns) can be selected according to water quality requirements to meet various needs such as coarse filtration and fine filtration.
- High Interception Efficiency
- The deep filtration structure effectively captures impurities of different particle sizes, with a large dirt-holding capacity and long service life.
- Chemical Corrosion Resistance
- The materials are resistant to acids, alkalis, and most chemical reagents, suitable for multiple scenarios such as industrial wastewater, municipal sewage, and food processing water.
- Convenient Replacement
- The bag-type structure is easy to install and replace without professional tools, reducing maintenance costs.
Application Scenarios
- Industrial Water Treatment: For example, filtration of circulating cooling water, pretreatment of chemical wastewater, and filtration of metalworking fluids to remove suspended solids and mechanical impurities.
- Municipal Water Supply/Sewage Treatment: Used for pretreatment in waterworks and secondary filtration in sewage plants to improve water clarity.
- Food and Beverage Industry: Filters production water, syrups, alcoholic beverages, etc., to ensure products meet hygiene standards.
- Pharmaceutical and Electronics Industry: Used for pretreatment of high-purity process water to intercept particulate contaminants and meet clean production requirements.
Selection Considerations
- Filtration Precision: Choose appropriate precision based on the particle size of impurities in the water source and treatment objectives (e.g., 50 microns for swimming pool water filtration, 1 micron for electronic-grade water).
- Material Compatibility: Ensure that the filter bag material is chemically compatible with the liquid to be treated (e.g., polypropylene for acidic liquids).
- Flow Rate and Pressure: Select filter bag sizes (e.g., No. 1 bag, No. 2 bag, etc.) according to the system flow rate, and ensure pressure resistance meets working conditions.
- Support Structure: Needs to be used with a bag filter; pay attention to the matching of the filter’s diameter, sealing method, and filter bag.
- Environmental Requirements: Prioritize recyclable materials or filter bags that meet environmental standards to reduce secondary pollution.
- Diverse Filtration Precisions
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Product Advantages of Water Filter Bags: Superior Performance Making It the Industry’s First Choice
Water filter bags hold a pivotal position in the water treatment market and are highly favored by various industries. This is mainly due to a series of remarkable and unique product advantages they possess.High – efficiency Filtration Performance for Precise Water Purification
One of the core advantages of water filter bags is their outstanding filtration performance. According to different filtration requirements, it can accurately match filter cloths of various pore sizes, efficiently intercepting impurities ranging from large particles in millimeters to fine impurities in microns or even nanometers. For example, in industrial wastewater treatment, the wastewater from some metal processing industries often contains a large number of large – sized metal debris, sediment and other impurities, as well as micron – sized colloidal particles and bacteria and microorganisms generated by chemical reactions. By carefully selecting the appropriate pore – sized filter cloth, water filter bags can separate these impurities of different particle sizes one by one, making the treated. -
The wide application scenario of water filter bag: protect the water safety of various industries
With its excellent filtration performance, water filter bags have a wide range of applications in many fields, providing a strong guarantee for the water safety and production process in various industries.
In the field of drinking water treatment, water filtration bags are an important line of defense to ensure healthy drinking water for residents. When the water works purify the raw water, filter bags with different precision will be used to remove impurities such as sediment, algae, bacteria and some viruses in the water. After layers of filtration, the raw water meets the drinking water sanitation standards stipulated by the state before it is transported to thousands of households. For example, in some areas where the water source is polluted, by installing high-precision water filter bag equipment, harmful pollutants can be effectively removed from the water, so that residents can drink soothing water.
In industrial production, water filter bags play an irreplaceable role. In the electronics industry, the production process has very high requirements for water quality, and even extremely small impurities can affect the quality of electronic products. The water filter bag can accurately filter out the particles and microorganisms in the water, providing ultra-pure water for chip manufacturing, circuit board cleaning and other processes to ensure the stable performance of electronic products. In the chemical industry, a variety of chemical reactions require pure water as a raw material or reaction medium. The water filter bag can remove impurities and harmful ions in the water, prevent these substances from interfering with the chemical reaction, and ensure the quality of chemical products and the smooth progress of the production process.
In the field of environmental protection, water filter bags perform well in sewage treatment and rainwater collection and utilization. Sewage treatment plants use filter bags to pretreat sewage, remove large particles of impurities, and reduce the burden of subsequent treatment process. In the rainwater collection system, the filter bag can filter out the impurities such as leaves and dust in the rainwater, so that the collected rainwater can be used for non-drinking purposes such as irrigation and car washing, and realize the effective use of water resources.
In addition, in aquaculture, landscape fountains and other fields, water filtration bags also play an important role in maintaining the cleanliness and ecological balance of water bodies. It can be said that the application scenarios of water filter bags are extremely wide, and it is like a silent guardian to protect the quality of water in various industries. -
The working principle of water filter bag: the core mystery of efficient purification
In today’s era of pursuit of high-quality water resources, water filter bags, as a key filtration equipment, play a vital role. So, how is the water filter bag to achieve efficient filtration, so that the water quality is purified? There are many subtleties in how it works.
The water filter bag mainly removes impurities in the water by means of physical interception. It is usually made of a filter cloth of a specific material, which has different pore size specifications, from the micron level to the finer level. When the water containing impurities passes through the filter bag, particles, suspended solids, colloids and other impurities larger than the filter cloth aperture will be blocked by the filter cloth and cannot pass through, thus being trapped in the filter bag.
For example, in the treatment of industrial wastewater, the wastewater may contain a large number of metal particles, sediment, and suspended substances formed by various chemical substances. The water filter bag can accurately intercept these impurities, so that the filtered water meets the discharge standard or can be further treated and reused. In the swimming pool water treatment, the filter bag can effectively remove impurities such as hair, dander and dust brought by the human body, ensure that the pool water is clear and clean, and provide people with a safe and comfortable swimming environment.
In addition, the filtration effect of the water filter bag is also related to its structural design. Some filter bags adopt multi-layer structure, and the filter cloth aperture of different layers becomes smaller gradually, forming a gradient filtration mode. In this way, the water flow through the multi-layer filter cloth process, impurities will be gradually intercepted, greatly improving the accuracy and efficiency of filtration. Moreover, the material selection of the filter bag is also extremely critical, high-quality filter cloth material not only has good filtration performance, but also needs to have a certain strength and corrosion resistance to ensure stable operation in different water quality and working environment.
It is based on these physical interception, structural design and material characteristics and other factors, water filter bags can efficiently achieve water purification, becoming an indispensable water treatment equipment in many fields.
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How the water filter bag works？
Working principle
The multi-bag filter introduces the water to be filtered into the filter shell through the pump, and the water enters the filter bag. Under the action of pressure, the water passes through the microhole of the filter bag, and the impurities are trapped in the filter bag, so as to achieve the filtration and purification of water.
Component introduction
Filter bag: Made of polypropylene, with different micron grades, such as 0.2 micron, 5 micron, 10 micron, 100 micron, can be selected according to filtration needs. The lower the micron number, the finer the particles that can be filtered out, and the higher the filtration accuracy.
Multi-bag filter: usually made of corrosion-resistant materials such as stainless steel, it can accommodate multiple filter bags to increase the filtration area and flow rate and improve filtration efficiency.
Material property
Polypropylene (PP) : good chemical stability, acid, alkali, organic solvent resistance; With good mechanical strength and wear resistance, the price is relatively low, cost-effective.
Polyethylene (PE) : strong chemical resistance, good flexibility, can adapt to a certain degree of deformation and vibration; Good low temperature resistance, can still maintain good performance in cold environment.
Polytetrafluoroethylene (PTFE) : has very high chemical stability, almost no reaction with any chemical substances; Excellent resistance to high temperature and low temperature; Smooth surface, not easy to absorb impurities, easy to clean.
Nylon (Nylon) : high strength, good toughness, can withstand greater pressure and tension; High filtration accuracy, can effectively remove fine particles and impurities in water. -
PP PE PTFE Nylon Water Filtration Multi Bag Filter Machine 0.2/5/10/100 Micron Polypropylene Liquid Filter Bag
In the delicate field of water filtration, our filter bags are well deserved experts. Using the scientific ratio of P, PE, PTFE, nylon multiple materials, combined with the precise aperture design of 0.2 to 100 microns, each polypropylene filter bag has been created by strict technology. From food and beverage production lines to pharmaceutical laboratories, from chemical raw materials purification to daily drinking water purification, it can accurately intercept all kinds of impurities in the water, efficiently remove microorganisms, colloids and fine particles, with excellent filtration performance, for your water safety and product quality layers of control, setting a new benchmark for industry quality.
vividness
Imagine that every drop of water is a small world, and our water filter bag is the magical guardian of this world. P, PE, PTFE, nylon interwoven into a tough and delicate “magic net”, polypropylene filter bag as with a sharp eye, whether it is 0.2 microns of tiny dust, or 100 microns of larger impurities, all do not want to escape its “pursuit”. When the water flows through the filter bag, it is like experiencing a wonderful purification journey, the impurities are stopped one by one, and the outflow of water becomes crystal clear, like a mountain spring, bringing you the purest water experience.
Affective resonance wind
Water is the source of life and the key to quality of life. We know your desire for pure water quality, so we have carefully developed this water filter bag. It is based on P, PE, PTFE and nylon, and is equipped with polypropylene filter bags of different microns to protect every water use. Whether it is the daily drinking water prepared for the family, or the safe choice of brewing milk powder for the child, it can ensure that the water quality is pure, so that you can drink every mouthful of water with confidence, every use of peace of mind, with pure water, nourish the happy life of you and your family. -
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What is a water filter bag?
A water filter bag is a filtration device mainly used to remove impurities, suspended solids and other substances in water to purify water quality. The following is a detailed introduction:
Structure and Material
- Structure: Generally, a water filter bag is a bag-shaped structure with an opening at one end. The opening is usually designed with a ring or other fixing device for easy installation and connection to the water filtration system.
- Materials: It is often made of various filter materials such as polyester, polypropylene and nylon. These materials have different filtration precisions and chemical resistances to meet different filtration requirements. For example, polyester filter bags have good strength and chemical stability, while polypropylene filter bags are known for their excellent acid and alkali resistance.
Working Principle
- The water to be filtered enters the filter bag through the inlet. As the water passes through the filter material of the bag, impurities, suspended solids, and particulate matter in the water are trapped by the filter material due to the sieving and adsorption effects. The filtered water then passes through the filter bag and flows out through the outlet, thus achieving the purpose of water purification. The filtration precision of the filter bag can range from a few microns to hundreds of microns, depending on the specific application and the fineness of the filter material.
Applications
- Industrial Fields: In industrial water treatment, such as in the chemical, electroplating, and pharmaceutical industries, water filter bags are used to remove impurities in process water to ensure the quality of products and the normal operation of production equipment. They can also be used in industrial wastewater treatment to reduce the content of pollutants in the wastewater before it is discharged.
- Domestic Use: In household water purification systems, water filter bags are often used as the first stage of filtration to remove large particles of impurities, rust, and sediment in tap water, prolonging the service life of subsequent water purification equipment such as water purifiers and improving the quality of domestic water.
- Aquaculture: In aquaculture, water filter bags are used to filter pond water or circulating water in aquaculture systems to remove uneaten feed, fish feces and other impurities, maintaining good water quality and a suitable living environment for aquatic organisms.
- Swimming Pools: In swimming pool water treatment systems, water filter bags play a role in filtering out suspended matter, leaves and other impurities in the water to keep the pool water clean and clear and reduce the burden of disinfection and purification equipment.
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Customized bleached cotton wound dust filter PP 1-200um
Customized bleached cotton wound dust filter PP 1-200um used to remove suspended solids in liquids acid and alkali resistance
AFC– filter cartridge bleached cotton 50 -200micron1- 3.5″ Dia. x 30″ L string wound filter cartridge with a tinned steel core. Bleached cotton string wound cartridges work well for potable liquids, vegetable oils, beverages, organic solvents and more. The bleached cotton is FDA acceptable under CFR title 21 for food and potable water contact. This 50 micron filter cartridge is double open ended (DOE) with no caps