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We produce high quality products with the best materials! or over 36 years, Red Star has been a company dedicated to the engineering and manufacturing of screening media that are widely used in the mining and aggregates industry.
Mineral screens play a vital role in the water treatment industry Their core functions are physical screening , impurity interception and process protection, which directly affect water purification efficiency, equipment life and operating costs
Screen (coarse/medium/fine):
Application scenarios:
Water inlet of municipal sewage treatment plant and front end of industrial wastewater treatment.
effect:
Intercept large solids (branches, plastics, household garbage) to prevent clogging of pumps, valves and pipes;
Protect subsequent biological treatment units (such as aeration tanks and MBR membranes) from mechanical damage.
Screen Type:
Stepped grid screen: used for high-flow sewage, with a gap of 20-50mm;
Drum type fine screen: gap 1-6mm, removes hair, fiber and other small debris.
Microfiltration screen (vibrating/rotating drum type):
Application scenarios:
Pretreatment of membrane bioreactor (MBR) and reverse osmosis (RO) systems.
effect:
Removes 0.1-1mm suspended particles, reduces membrane fouling risk, and extends membrane life by 3-5 times;
Reduce the frequency of chemical cleaning (e.g., extend the RO membrane cleaning cycle from monthly to quarterly).
Screen Type:
Stainless steel wedge wire screen: pore size 0.2-0.5mm, strong corrosion resistance;
Polyurethane self-cleaning screen: with bouncing ball design to prevent clogging.
High frequency vibrating screen:
Application scenarios:
Electroplating wastewater (metal particles), textile printing and dyeing wastewater (fiber debris), food processing wastewater (grease suspended matter).
effect:
Separate heavy metal particles (such as copper powder, nickel slag) and recycle resources;
Intercept fiber impurities to avoid entanglement of biological fillers or clogging of aeration heads.
Screen Type:
Acid and alkali resistant polyester screen: pH tolerance range 1-14;
Anti-stick coating screen: reduces grease adhesion (such as PTFE coating).
Multi-layer composite screen:
Application scenarios:
Seawater pretreatment (removal of algae and shell fragments), raw water filtration in drinking water plants.
effect:
Protect high-pressure pumps and reverse osmosis membranes from wear caused by hard particles;
Improve effluent water quality (turbidity ≤ 1NTU).
Screen Type:
Titanium alloy screen: resistant to seawater corrosion, service life of more than 10 years;
Ultra-high molecular weight polyethylene (UHMWPE) screen: prevents biofilm growth.
Centrifugal screen:
Application scenarios:
Feed end of belt filter press and centrifugal dehydrator.
effect:
Pre-screening of large particles of impurities (such as gravel and plastic pieces) in sludge to prevent damage to dewatering equipment;
Improve the solid content of sludge (from 0.5% to 5%) and reduce the energy consumption of subsequent treatment.
Intercepting large particles can reduce the frequency of pump and valve maintenance (repair costs reduced by 40%);
Extend the life of the membrane system (saving 500,000 to 1,000,000 yuan/year in RO membrane replacement costs).
Ensure that the effluent suspended solids (SS) is ≤10mg/L, meeting the Pollutant Discharge Standard for Urban Wastewater Treatment Plants (GB 18918-2002);
The heavy metal removal rate in industrial wastewater has been increased to over 95% (for example, the copper ion concentration in electroplating wastewater has been reduced from 50 mg/L to 1 mg/L).
Recover metal particles from wastewater (e.g. copper powder recovery value is 3,000 yuan/ton);
After dehydration, the sludge is incinerated to generate electricity, realizing energy utilization.
Selection depends on material hardness, moisture content, particle size, and impact force:
Wet or sticky materials → Polyurethane mesh (anti-clogging)
High abrasion materials → Manganese steel woven mesh or perforated plate
High-precision screening → Stainless steel woven mesh
Heavy impact materials → Steel-edge PU panels or rubber screen panels
Choosing the correct mesh improves output and reduces downtime.
Service life varies with material abrasiveness, vibration frequency, installation tension, and screen type:
Polyurethane mesh: 3–12 months
Manganese steel mesh: 1–6 months
Stainless steel mesh: 2–8 months
Rubber panels: 4–12 months
Proper tensioning and selecting the right aperture significantly extend lifespan.
Clogging occurs due to moisture, irregular particle shapes, or unsuitable aperture designs. Prevention methods:
Use self-cleaning screens (wave or harp type)
Switch to polyurethane anti-blinding mesh
Adjust vibration amplitude and screen angle
Pre-screen wet or muddy materials
Anti-clogging solutions greatly improve screening efficiency.
Key points during replacement include:
Ensuring consistent tension across the entire screen
Checking the screen frame for deformation
Matching hook types or fastening systems with your screen machine
Cleaning the deck to remove remaining material
Proper installation reduces breakage and improves screening accuracy.
Screening efficiency can be improved by:
Choosing the right aperture and mesh material
Adjusting vibration frequency and screen inclination
Maintaining uniform material feeding
Using multi-stage screening designs
Performing regular maintenance on screen decks and meshes
Efficiency improvements of 10–30% are commonly achievable.