noun
purifier; purification device
General term for a device that purifies air, water, or other substances. Often used in compound names like 空気浄化装置 (air purifier) or 水質浄化装置 (water purification system).
この浄化装置は水をきれいにする。
This purifier cleans the water.
Compound of 浄化 (purification) + 装置 (device, equipment).