Terracotta water filtration disc: terafil

Product/Process

Manufacture of Terafil (terracotta water filtration disc)

Application/Use

For filtration of turbid water from pond, lake, river etc. to get clean drinking water.

Salient Features of Process/Technology

The burnt clay disc, named 'Terafil' can be fabricated by a village potter using red clay, sand, raw dust and the potter's kiln.

It is fitted at the bottom of a suitable domestic water pot or chamber. The raw water with turbidity upto 100 NTU is filled into the container while filtered clean water is collected at the bottom @21/hr. The quality of filtered water meets BIS and WHO standards. The Terafil disc costs about Rs.30 and can be used upto 5 years.

Status of Commercialisation

Commercialised.

Minimum Economic Unit Size

500 disc/day

Indicative cost/unit

Rs. 4 lakh

Equipment and Machinery

Usual pottery equipment and firing kiln

Raw Materials

Red clay, sand, sawdust etc.

For further information please contact

The Director
Regional Research Laboratory,
Sachivalaya Marg, Bhubaneswar- 751 013