sewage treatment
Fiber balls are spherical water treatment filter media made of fiber filaments (such as polyester, polypropylene, or acrylic). They have high porosity (96%), strong interception capacity (6-10 kg/m³), and compressibility. They are mainly used for wastewater filtration in industries such as oil fields and petrochemicals. They achieve high-efficiency purification through a triple mechanism of direct interception, inertial interception, and electrochemical adsorption.
Core Characteristics and Working Principle
- Physical Properties:
① Excellent Elasticity: Resilience rate remains at 65% after 20% elongation, ensuring filter bed structure stability.
②Pore Distribution: Forms an ideal pore structure with larger pores at the top and smaller pores at the bottom during operation, achieving a filtration rate of 20-85 m/h and a head loss of only 3-10 m.
③Corrosion Resistance: Strength 4-6 g/denier, resistant to acids and alkalis (such as 35% HCl, 10% NaOH), strength decreases by only 20% after one year of outdoor use.
- Purification Mechanism:
① Direct Interception: Retains suspended solids (accuracy > 5 microns).
② Inertial Interception: Separates oil and grease using water flow impact.
③ Electrochemical Adsorption: Modified fiber balls have a hydrophilic and oleophobic surface; after adsorbing organic matter, backwashing regeneration rate > 90%.
Main Types and Technology Comparison
- Ordinary Fiber Balls:
①Material: Polyester/polypropylene filament, unmodified.
②Applicable Scenarios: Low suspended solids water (SS≤100mg/L), such as industrial circulating water.
- Modified Fiber Balls:
①Characteristics: Added hydrophilic and oleophobic coating, improving oily wastewater treatment efficiency by 80%, with filtered oil content ≤5mg/L.
②Advantages: Annual replenishment rate of only 10%, backwash water consumption reduced by 2/3.
- Comet-shaped Fiber Balls:
①Structure: Comet nucleus + fiber bundle, filtration accuracy > 5 microns, dirt holding capacity 15-35 kg/m³.
②Applications: High-precision applications (such as the electronics industry), 50% smaller footprint than traditional sand filters.
Application Areas and Effects:
1、Oilfield Petrochemical: Treats oily wastewater (≤15mg/L), with filtered oil content ≤2mg/L, meeting reinjection water standards.
2、 Industrial Wastewater:
① Printing & Dyeing/Chemical: COD removal rate >60%, suspended solids ≤1.5mg/L.
②Power Generation/Metallurgy: Reverse osmosis pretreatment, effluent turbidity ≤1NTU.
3、Domestic and Aquarium: Aquarium filtration (nitrified hairballs), wastewater interception capacity 6-10kg/m³.