Japan Platform for Redesign: Sustainable Infrastructure (JPRSI)

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Flocculants for water treatment

Technology / Service Summary

Water treatment coagulant is added to contaminated water containing fluorine, boron, arsenic, phosphorus, etc. to coagulate and precipitate toxic substances and purify the water.


Efficient treatment of difficult-to-process elements


・More effective treatment of boron and fluorine than conventional methods
・Low chemical consumption and sludge generation, resulting in a large total cost advantage.
・Easy to handle because it is in liquid form.
・Able to treat up to low concentrations (fluorine)
・Treatment is possible in the weak alkaline pH range (boron)


Less sludge is generated due to small amount of additives, which reduces running costs.

Controlled Substance

Applicable Regions / Countries

  • Japan
  • Southeast Asia
  • Central/South Asia
  • China/ East Asia
  • ASEAN countries

    Indonesia,Singapore,Thailand,Philippines,Viet Nam,Malaysia


Country of delivery: Taiwan
Example: At a coal-fired power plant, waste gas scrubber effluent (desulfurization effluent) contained coal-derived boron. Boron is a difficult substance to treat, and conventional treatment methods have not been satisfactory. By switching to our flocculant for boron, we were able to achieve the target value in a stable manner.

Related SDGs Goals

  • 6. Clean Water and Sanitation
  • 11. Sustainable Cities and Communities
  • 12. Responsible Consumption and Production
  • 14. Life Below Water
  • 15. Life on Land

Flocculants for water treatment