Partikkelfjerning

Partikkelfjerning, or particle removal, refers to processes that separate, remove, or otherwise eliminate particles from a medium such as air, water, or surfaces. Particles can be solid or liquid and vary in size from nanometers to micrometers. The goal is to reduce particle concentration to improve safety, product quality, or system performance.

Common methods include mechanical filtration (filters or screens), sedimentation and gravity separation, centrifugation, coagulation and flocculation followed by sedimentation or filtration, membrane filtration (microfiltration, ultrafiltration, nanofiltration), cyclonic and inertial separators, electrostatic precipitation and filtration, adsorption with activated carbon, chemical cleaning with solvents or detergents, ultrasonic cleaning, and surface treatments such as plasma cleaning.

Partikkelfjerning is applied across sectors such as air purification and cleanrooms, water and wastewater treatment, industrial manufacturing, semiconductor and electronics fabrication, automotive and aerospace production, healthcare and laboratory hygiene, and general consumer product cleaning. It is used to protect equipment, meet health and environmental standards, and ensure product integrity.

Assessment and standards rely on measurements of particle size distribution and concentration, such as PM2.5 or PM10 for air, and turbidity or particle counters for liquids. Cleaning validation, surface cleanliness, and cleanliness classes guide performance. The choice of method depends on particle properties, required cleanliness, and system constraints.

Key considerations include efficiency versus energy use and pressure drop, cost and maintenance, disposal of spent filters or sorbents, potential chemical residues, and compatibility with materials or processes. No single method is universally optimal; effective particle removal often combines several approaches tailored to the specific application.