Filter Media

Certified products by Japan Water Works Association (JWWA)

• Filter sand for water supply
• Filter gravel for water supply
• Anthracite Filter Media for water supply
• Manganese sand for water supply
• Evaluation method of filter media in use
• Deterioration analysis of filter media

Physical filtration

• Filtration (granular filtration)
• Effective size and uniformity coefficient
• Linear velocity (LV)
• Space velocity (SV)
• Aggregation / filtration
• Iron removal mechanism (physical filtration method)

Contact filtration

• Iron removal mechanism (contact filtration method)
• Manganese removal mechanism
• Iron removal / manganese removal treatment
• Removal of iron and manganese from groundwater
• Example of low-concentration iron removal and manganese removal treatment
• High-concentration iron removal and manganese removal treatment example
• Decolorization process
• Decolorization mechanism
• Decolorization processing delivery example

Activated carbon, ion exchange resin

• What is activated carbon?
• Activated carbon adsorption
• Removal of free residual chlorine with activated carbon
• Free residual chlorine removal delivery example
• Ion exchange resin
• Water softener

Other chemicals for filtration

• Sodium hypochlorite
• Initial chlorine consumption of filter media
• Chlorine dioxide
• Coagulant
• Cryptosporidium measures
• Recommendation of multi-layer filtration
• Product information by target raw water

Remaking works

• Filtration layer survey / design (consultant)
• Filtration pond rehabilitation work (sand reverse system)
• Landmass