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Typical ( k_N,10 ) = 0.25 g N/kg SS·h.
was released in its most significant revision in May 2000 . It replaced the older ATV-A 131 from 1991. As of 2016, the standard has been updated and is now referred to as DWA-A 131 (though the ATV-DVWK version remains widely cited and used in legacy projects and international contexts). atv dvwk a 131 epdf top
: A design tool that implements the ATV-A 131 rules, allowing for calculations based on Chemical Oxygen Demand (COD) and various aeration methods. Typical ( k_N,10 ) = 0