Sponge iron filter material adopts high-quality mineral powder (active sponge iron) to filter oxygen at room temperature. Sponge iron is mainly composed of iron, and its porous internal structure provides 5- 10 times the specific surface area of ordinary iron filings, which can make oxygen and iron in water undergo rapid and thorough oxidation reaction. The dissolved oxygen content of the treated water can reach 0.05 by filtration and precipitation.

Advantages of sponge iron filter material: low backwashing frequency, high compressive strength, no pulverization, no hardening and large specific surface area. High activity, good regeneration effect, completely in line with the national boiler water quality standards. Active sponge iron deoxidizer provides sponge porous iron particles with an opportunity for dissolved oxygen in water to react with active iron, thus accelerating the redox reaction.