TERTIARY CLOTH MEDIA FILTRATION WITHOUT ROTATING ...

Total-P (mg/l) - Daily Composite2.00 1.80 1.60 1.40 1.20 1.00 0.80 0.60 0.40 Total-P (mg/l) - Daily CompositeFilter Influent Tot-P (mg/l)TBF Effluent Tot-P (mg/l)FFP Pilot Effluent Tot-P (mg/l)0.20 0.00 3-­‐Mar 13-­‐Mar 23-­‐Mar 2-­‐Apr 12-­‐Apr 22-­‐Apr Figure 4 – influent vs. effluent Total Phosphorous (Tot-P, mg/l) from Jackson, WI Pilot-scaleperformance testing of fixed plate cloth media filter.ConclusionFixed Plate systems 1.31 MGD installed 1.75 in NC MGD 2.19 MGD 5.25 2.19 MGD In early 2009, the fixed plate filter technology was chosen as the preferred tertiary treatment technologyto follow new secondary processes for 2 plant upgrades located on Emerald Isle, NC. Both plants havebeen operating since early 2010 and have continually produced & exceeded the effluent requirementsrequired for coastal discharge. A third fixed plate cloth media filter was recently installed at a youth campsouth of Asheville, NC and is expected to be operational in the spring of 2012. Fixed plate cloth mediafilters are currently operating successfully in several states nationwide, including TX, NC, CA, OH, WI, aswell as Ontario, Canada.Fixed Plates w/ air scour function as well as Disks, but without moving parts.Although cloth media filtration and disk filtration are often thought of as synonymous, the developmentand successful implementation of fixed plate cloth media technology have shown that many of theinherent disadvantages & mechanical complexities of the original disk-type system can be eliminatedwithout sacrificing efficiency or effluent treatment quality. By replacing rotating disks, vacuum manifolds,and spray bars with fixed media elements, hydraulic backwash, and air powered media agitation, much ofthe expense, operational complexity, and maintenance requirements can be removed from cloth mediafiltration.Tertiary Cloth Media Filtration without Rotating discs, vacuum pumps or spray bars