•-- >> cont: WM Accepted: L( Drinking water production): Slow Sand Filter( SSF) by biofilm effect( schmutzdecke): Its high effectiveness in removing heavy metal to undesired bacteria is not fully WM explained. * Also effective as activated sludge combined waste water treatment is now becoming underutilized status on new installation basis, replaced by another bio process MBR( Membrane BioReactor).
• Given established economic system, more suitable to install new in poor nations with low cost land that doesn ' t disrupt local overall business structure. With mechanical sand cleaning system, low cost labour is no longer essential. Cost competitiveness diminishes in long freezing season area( BioSand Filter- Manz Engineering, Bushproof, South Asia Pure Water Initiative +), Often due to low profitability( too cheap) notable NGOs handling rather than prv companies( similar phenomena to solar desalination or atmospheric water collector)( DHAN Vayalagam foundation +), but some eco conscious Western companies are taking up again( Osmo Sistemi +)
• J( waste water cleaning): effect in sludge digestion by some high aeration methods has WM media occasionally Disputed portion as to whether non-conventional aeration methods are much more effective than regular aeration types. In certain applications / situations some are reported to demonstrate disruptively increased effectiveness in following types: Spiral aerator type( Pax Water Technologies +), Z( bioenhancement, extra plant growth)( Seair inc +)-- >> continued linkedin. com / in / newnatureparadigm- Ben Rusuisiak: Specialty Cleantech Research, Vancouver,