(じょうか)

じょうか
noun, suru verb
purification; cleanup; cleansing
1. purification; cleanup
Making something pure or clean by removing impurities, contaminants, or unwanted elements. Used for physical processes like water treatment.
(みず)浄化(じょうか)する。
To purify water.
この装置(そうち)空気(くうき)浄化(じょうか)する機能(きのう)がある。
This device has an air purification function.
汚染(おせん)された河川(かせん)浄化(じょうか)には(なが)年月(ねんげつ)がかかる。
Cleaning up a polluted river takes many years.
2. cleansing; purging
Figuratively, removing corruption, negativity, or moral impurity from a person, organization, or society.
(こころ)浄化(じょうか)する。
To cleanse one's heart.
音楽(おんがく)()くと(こころ)浄化(じょうか)される()がする。
Listening to music makes me feel like my soul is being cleansed.
組織(そしき)浄化(じょうか)(すす)めるために(あたら)しい委員会(いいんかい)(もう)けられた。
A new committee was established to push forward the purging of the organization.

Used both literally for environmental and technical processes, and figuratively for moral or spiritual cleansing.

COMMON COLLOCATIONS:

  • 水質(すいしつ)浄化(じょうか) (water purification)
  • 空気(くうき)浄化(じょうか) (air purification)
  • 浄化(じょうか)装置(そうち) (purification device)
  • 浄化槽(じょうかそう) (septic tank)
  • (こころ)浄化(じょうか) (spiritual cleansing)

USAGE NOTE:
In environmental contexts, 浄化(じょうか) is a standard technical term. The figurative sense is common in literary and religious contexts, where it overlaps with the Buddhist and Shinto concept of ritual purification.