<br />Quo, J.C. Y. Illd Url>cou, B. 1996. "Maximized
<br />Detenlian Volumo Ilclcnnined by Runoff
<br />Capcure RlIIio," J. Waur Rnotucn Plonning
<br />and Manag_t. 1anIFob, p. 33-39,
<br />Am<riam Society of Civil Enginccn, R_
<br />VA.
<br />NeufeJcl, C.Y. 1996. "A.lnvutigaJion of
<br />Dijf.,.., Mod/afor Flllratlon ofStormwater."
<br />M.uten Theoi>, Deparlmenl of Civil
<br />
<br />Engineering. Univcnity ofColondo lit
<br />Denver, DeDver. Cokndo.
<br />Urboou, B. R., Illd Ruzzo, W. 1986.
<br />"SWldardization ofDetenlian Pond DeailPl
<br />for Pbosphorua Removal," Urban lam. If
<br />PolIMtion. NATO AS1 Series VoL 010.
<br />Spring....Vcriag. Berlin.
<br />Urboou, 8., R.oesner. L.A. and 000. C.Y., L.8.
<br />19960. "Hydrology for Optimal Sizing of
<br />
<br />Urban RunoffTreatmenl Control S}'Ilems,"
<br />Wow QuoUty 1._aUonal. 1nI<mali00l!
<br />Auociatian for Wat<< Quality. London,
<br />EDgIand.
<br />Urboou, B.R., Do<<f..., J.T.ll1d Tuok.... 1.8.
<br />199&. "Starmwat<< Sand FiI1nllion: A
<br />Solution or. Problem?" APWA Reporter.
<br />Am<rican Public Worb Association,
<br />wubington, DC.
<br />
<br />Table 1. Suggested Removal Rates by
<br />Retention and Detention Upstream of a
<br />Media Filter
<br />
<br />Detention Snggested Percent
<br />Volume,P.. Removal- Rv
<br />Drain Time Detention Retention
<br />T. in hours
<br />48 60 90
<br />24 55 85
<br />12 50 80
<br />6 40 75
<br />3 30 70
<br />1 20 50
<br />
<br />Table 2. Field Measured Performance Ran~es of Sand Filters
<br />Constituent In or Concentration mll/l Percent Removed
<br /> Out Low Hi"h Mean Low Hi"h MCR.
<br />TSS In 12 884 160
<br /> Out 4 40 16 8% 96% 80-94%
<br />TP In 0.05 1.4 0.52
<br /> Out 0.035 0.14 0.11 5% 92% 50-75%
<br />TN In 2.4 30 8.0
<br /> Out 1.6 8.2 3.8 (-130)% 84% 30-50%
<br />TKN In 0.4 28 3.8
<br /> Out 0.2 2.9 1.1 0"10 90% 60-75%
<br />TC. In 0.030 0.135 0.06
<br /> Out 0.016 0.035 0.025 0% 71% 20-40%
<br />12. In 0.04 0.89 0.20
<br /> Out 0.008 0.059 0.033 50% 98% 80-90%
<br />
<br />.MCR - Most Common Data Range
<br />
<br />~
<br />
<br />4
<br />
<br />,.,
<br />T'"1.5
<br /><
<br />.21.4
<br />~ 1.3
<br />~
<br />11l'.2
<br /><
<br />"; 1.1
<br />~ '
<br />.
<br />'u 0.9
<br />~ 08
<br />o
<br />007
<br />0'
<br />o
<br />
<br />Maximized Storm Capture Volume l.-
<br /> ,....
<br /> V f':O.85toO.97-
<br /> --
<br /> y
<br />...-1 Me,,,, Storm Capture Volume L
<br />~I I I
<br />
<br />10 15 ~ a ~ ~ ~ U W 55
<br />Drain time in Hours
<br />
<br />Fig. 1 - Values of coefficient a in Equation 1.
<br />
<br />24,00
<br />22,00
<br />20,00
<br />... 1800
<br />~ 1600
<br />.". 14.00
<br />~ 12.00
<br />"
<br />~ 1000
<br />;:;: 6.00
<br />~ 6.00
<br />,
<br />'.00
<br />2.00
<br />0,00
<br />0.00
<br />
<br />1200
<br />1100
<br />10,00
<br />9.00
<br />800
<br />7.00
<br />6.00
<br />5.00
<br />400
<br />'.00
<br />2.00
<br />o
<br />o '.00
<br />fIl----+O,OO
<br />1.201.40
<br />
<br />.~
<br />Zone I
<br />
<br />Zone II
<br />rMost Probable Range in Ffow
<br />ThroushRateDecay
<br />I.SuggesledDesign
<br />
<br />,
<br />\ 0, CnptrlclAnl"fnr Fnuatlnn s"
<br />
<br />
<br />o ,
<br />
<br />"-
<br />o
<br />
<br />0.20
<br />
<br />~,
<br />OAO
<br />
<br />CumulatlveUnllTSSRemoved, L.(poundlsquarefoo!)
<br />
<br />Fig. 3 - Flow through rate of sand filter as a
<br />function of TSS removal.
<br />
<br />Overflow - Concentration (Eft = kr tD E!)
<br />
<br />Storm water
<br />R u no ff
<br />lnflow Cone. (E,)
<br />
<br />
<br />Downstream
<br />Emuen! Cone. ([;J) Composite
<br />onc.
<br />
<br />Case]. All runolTpasses through the detention or retention basin upstream of the tilter
<br />
<br />Overflow - Concentration (Ell = krEI)
<br />
<br />Stonnwater
<br />Runoff
<br />Inflow Cone. (E,)
<br />
<br />
<br />Dowmlream
<br />Composite
<br />onc.
<br />
<br />ease 2. All runoffexcecding detention volume bypasses the filter and the dClcntionlret entionbasin.
<br />
<br />Fi~. 4 - Storm water RunolT Connection Arrangements for a Filter System.
<br />
<br />-
<br />
<br />14
<br />
<br />-,-- P - Wale' Quality Caplur~ Volume
<br /> --= S=harg', Q orth~DcsisnCapturcVolume
<br /> - (M.S-:)
<br /> '0
<br /> _A, . Sandor
<br /> OthcrFilterMeJia.
<br /> II S<ltld*
<br /> II.. ..
<br /> - q.Ar
<br />C",eL Detention Basin with Conlrollod Releasc 1'0110w<<l by a Filter Media
<br />~W.;;,-- ~.S.-",-
<br /> Sand.
<br /> " M,S,-Maximum
<br /> Surcharge
<br /> / _A,
<br /> Sand"
<br />Permanent
<br />Storage '.
<br /> .... ~. - 'I-A,
<br />Case 2: Retention Pond with Controlled Surcharge Rclea-<e. followed by a Media Filler
<br />~ vW.S. Define the Fraction of the Watef
<br />- Surface over Rctonlion "Pond" as.
<br /> " 'r [A..-;.,,]
<br />~A. A,
<br />.J".
<br />Permanent Sand"
<br />Storage .,
<br /> I: '-=:J - 'l'Ar
<br />Casc J: Combination Retention Pond & Medin Filter Without Controlled Rden." to Filter
<br />Fi~_ 2 - Three Arrangements of Filters with Detention.
<br />
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