Modular electrostatic precipitator

A modular electrostatic precipitator comprising:

• a housing providing a flow path through which air is moved;
• a charging module configured to emit electromagnetic waves to the air;
• a first attaching and detaching unit configured to attach and detach the charging module to and from the housing;
• a particle collecting module configured to collect particles in the air based on an electrostatic force;
• and
• a second attaching and detaching unit configured to attach and detach the particle collecting module to and from the housing,
• wherein the charging module includes:
• a charging case detachably mounted to the housing through the first attaching and detaching unit;
• an electromagnetic wave tube provided in the charging case, wherein the electromagnetic tube comprises a carbon nanotube-based emitter configured to emit electromagnetic waves to ionize fine particles in the air traveling through the flow path;
• and
• a power supply, installed in the charging case, configured to supply power to the electromagnetic wave tube, and
• wherein a portion of the first attaching and detaching unit extends from the charging case.