Fuji Pigment develops silicate iron-based coagulant for water treatment

Japanese company Fuji Pigment has developed an environmentally friendly coagulant called FUJI SP PSI for treatment of drinking water.

FUJI SP PSI, invented by Dr Ryohei Mori at Fuji Pigment, is said to cast less environmental impact on earth, plant, animal and human health.

Compared with the conventional coagulant based on poly aluminium chloride (PAC), FUJI SP PSI is based on poly silicate iron (PSI) to make it environmentally friendly, as it is made of safe and abundant elements, iron and silicon.

The aluminium-based coagulants could have an adverse effect on the environment, as aluminium spreads into soil and could deplete phosphate, the company added.

Fuji Pigment also claimed that the aluminium-based coagulants can cause neurological diseases among people, because of residual aluminium.

The company also claimed that the sludge generated by coagulant can be recycled back to agricultural soil and can be used as fertiliser, as it contains rich phosphor, which helps in plant growth.

Since the PSI causes gelation during the storage of water in containers, the company has improved the technology in FUJI SP PSI to address these concerns.