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ADVANTE (MANUAL O&M Treatment Process and Performance Expectations: AdvanTexTm Textile Filter AX Series $} RX Series "" microbes that reduce nitrates to nitrogen as AdvanTex Textile Filter g g The AdvanTex'" textile filter provides secondary (denitrification). Harmless nitrogen gas is then wastewater treatment.The filter is a sturdy, released freely back into the atmosphere.The facclimation period for nitrification may range watertight fiberglass basin filled with an engi- from four to eight weeks,or longer in colder veered textile material.This lightweight,highly climates. absorbent textile material treats a tremendous amount of wastewater in a small space. AdvanTex filtrate effluent quality is dependent upon proper management of the recirc/blend The AdvanTex'" filter operates in the recirculat- effluent flowing into the filter(which, in turn, ing mode,just like a recirculating sand or gravel is dependent on the conditions described on the + filter, but loading rates are typically 5-20 times previous page). If proper conditions are met,and higher,for a number of reasons. For one thing, with typical average daily flows of 40-60 gallons the textile media has a very large surface area— per capita per day,you can expect the following about 5 times greater than that of an equivalent volume of sand.Textile also has a greater void treatment performance (by Mode}: volume (for free-flow of oxygen) and greater performance Expectations'* ` water-holding capacity. AdvanTex'" Textile Filter . Wastewater percolates both through and between BOD. TSS TN the textile media.A visible biological film nor- m91L mg/L mg/L mally develops on the filter medium within a few AX filtrate(Mode 1) 15 15 25 days. SODS and TSS reductions occur almost -----------filtrat---e---(Mode---3) AX -------------15 1 i 5 5---------------- - "-------l0----- immediately. ---------------------------------------------------------------------------- RX filtrate(Mode 1) 10 10 10-30 Within the filter,aerobic conditions exist that .........".'--- -------------" ..................--------------------- are ideal for microbes that convert ammonia to RX filtrate(Mode 3} to to to -- - - --- ----------------------------------------------------- nitrate (nitrification). Other conditions exist, too, `Performance expectations are based on typical average that result in further nitrogen reduction within influent characteristics and hydraulic loading rates. the media. Some AdvanTex" filters are contig- Performance and servicing frequencies will tend to vary relative to the mass load being treated. Procedures for ured (Mode 3) so that the filtrate recirculates treating excessively high loads will require engineering back to the high-carbon, low-oxygen environ- review. For more information,please review Advan Tex— menr of the processing rank,which is ideal for Design Criteria.