NICHA’s
wastewater treatment system

NICHA’s wastewater treatment system is a next-generation, environmentally safe solution designed to improve water quality, remove hazardous substances, and reduce greenhouse gas emissions from wastewater ponds and treatment facilities. By utilizing a clean carbonate solution derived from NICHA CCUS and NICHA DAC, the system adjusts pH, precipitates heavy metals, neutralizes chemical contaminants, and significantly mitigates methane (CH₄) and nitrous oxide (N₂O) emissions—two of the most potent greenhouse gases. Because the carbonate solution is mildly alkaline and free from toxic or corrosive chemicals, NICHA WWT offers an effective, low-risk alternative to conventional chemical treatment methods such as PAC, alum, or amine-based agents.

How it works!

• Heavy metal & chemical precipitation (Fe, Mn, Pb, Zn)

• Reduction of greenhouse gas emissions:

  – Methane (CH) reduced by ~50%

  – Nitrous Oxide (NO) reduced by ~17%

• Formation of stable carbonate sludge

NICHA WWT Process

1. Initial water quality assessment (pH, heavy metals, COD/BOD, odor, color)

2. Continuous carbonate dosing

3. Carbonate precipitation and metal removal

4. CH/NO reduction by ORP adjustment and microbial suppression

5. Sludge separation and final polishing

Benefits

• Efficient removal of heavy metals & chemical contaminants

• 50% reduction in CH emissions

• 17% reduction in NO emissions

• No hazardous chemicals (no PAC, Alum, Amine)

• Stable carbonate sludge

• Reduces COD/BOD and odor

Applications

• Industrial wastewater ponds

• Municipal wastewater treatment plants

• Livestock farms / biogas ponds

• Industrial estate treatment systems

• Anaerobic digesters requiring CH/NO mitigation