VCWRF High Rate Clarification: From Drought to Peak Flow and Beyond - PowerPoint PPT Presentation

VCWRF High Rate Clarification: From Drought to Peak Flow and Beyond Russe ll Re dde r, P.E . 1 February 13, 2018

T OPICS – Ba c kg ro und – Pa st (T he Go o d Old Da ys) – Pre se nt (Hig h Ra te Cla rific a tio n) – F uture (Pe a k F lo w a nd Be yo nd? ) 2

BACKGROUND – VCWRF is the o nly WWT P fo r F o rt Wo rth a nd Custo me r Citie s – Co nve ntio na l Ac tiva te d Sludg e – Pe rmitte d ADF o f 166 MGD – Pe rmitte d Pe a k F lo w o f 367 MGD – Outfa ll in T rinity Rive r – Adde d HRC in 2005 – Co nstruc te d PF B in 2016-2017 3

VCWRF AE RI AL

T HE GOOD OL D DAYS

T HE GOOD OL D DAYS

HI GH RAT E CL ARI F I E R ARRI VE S: 2005 Disc ha rg e to I nte rna l Outfa ll (CCB) if F lo ws a re a b o ve 255 MGD

… AND SE L DOM GOT USE D HRC Disc ha rg e s to I nte rna l Outfa ll • Ma rc h 2006: 2 Da ys • June 2007: 1 Da y • Oc to b e r 2009: 4 Da ys • Ma rc h 2010: 2 Da ys • Ja nua ry 2012 : 2 Da ys • Ma rc h 2012: 2 Da ys

T E XAS DROUGHT MAP SE PT . 2011 Ye ar Pr e c ip. 2005 18.97” 2006 29.75” 2007 50.05” 2008 27,10” 2009 40.89” 2010 31.70” 2011 25.88” 2012 31.26” 2013 29.40” 2014 21,32”

2015: WE T T E ST YE AR I N HI ST ORY: 62.61” PRE CI PI T AT I ON AT DF W AI RPORT HRC Disc ha rg e s to I nte rna l Outfa ll • Ma y 10-12 : 74 MG • Ma y 14 : 30 MG • Ma y 17-18 : 60 MG • Ma y 21-22 : 30 MG • Ma y 24-June 2 : 480 MG • Oc to b e r 25-26: 61 MG • Oc to b e r 31-No ve mb e r 1: 60 MG • No ve mb e r 27-De c e mb e r 2: 343 MG • De c e mb e r 27-30: 171 MG

PE AK F L OW ST ORAGE BASI NS • F ind a L o c a tio n to Sto re L a rg e Vo lume s o f Wa ste wa te r fo r T re a tme nt L a te r. • I nsta ll a n 84” Pipe line fro m Bo x OO to Ca rry Wa ste wa te r fro m the Hig h Ra te Cla rifie r (HRC) to Pe a k F lo w Sto ra g e . • Utilize Ne w a nd E xisting Pipe line s to Co nne c t Bo x OO to PE PS 2 fo r Re turn F lo ws. • I nsta ll a Ne w Pump a t the HRC to I nc re a se F lo wra te . 11

WHE RE CAN WE ST ORE L ARGE VOL UME S? SL UDGE ONL Y L ANDF I L L (SOL ) 12

PE AK F L OW BASI NS: 275 MG 2 CE L L S, GRASS-L I NE D 13

PE AK F L OW ST ORAGE BASI NS 84” Pipe line : E xc a va tio n thro ug h No rth L e ve e 14

PE AK F L OW ST ORAGE BASI NS 84” Pipe line : Cro ssing the T rinity Rive r 15

PE AK F L OW ST ORAGE BASI NS 84” F lo wme te r 16

COMPL E T E D PE AK F L OW ST ORAGE 17

PE AK F L OW ST ORAGE BASI NS T e sting the Spillwa y 18

PE AK F L OW ST ORAGE BASI NS Alte rna te use : Diurna l F lo ws 19

PE AK F L OW ST ORAGE BASI NS F uture Use : F la tte n Diurna l Curve ? Be ne fits • Physic a l, Che mic a l, a nd Bio lo g ic a l Pro c e sse s wo uld Be ne fit fro m Ste a dy F lo ws Cha lle ng e s • Sta ffing a nd Running HRC a t Nig ht • Co sts o f Che mic a ls a nd E le c tric ity • Hydra ulic s b e twe e n F a c ilitie s • E ro sio n o f PF Bs fro m Co nsta nt Use • Odo rs a t PF Bs 20

ACK NOWL E DGE ME NT S: • CDM-Smith • CP&Y • Mc Ca rthy Co nstruc to rs • F a rida Go de rya • Ana J. Pe na -T ije rina 21

QUE ST I ONS? Russe ll Re dde r, P.E . Russe ll.re dde r@ fo rtwo rthte xa s.g o v 22