ASTM_D_6104_-_97_2017e1.pdf

Designation:D610497(Reapproved 2017)1Standard Practice forDetermining the Performance of Oil/Water SeparatorsSubjected to Surface Run-Off1This standard is issued under the fixed designation D6104;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEThe Keywords Section was added editorially in December 2017.1.Scope1.1 This practice covers the procedure,any necessary re-lated apparatus,and the sampling technique to be used indetermining the performance characteristics of oil/water sepa-rators subjected to contaminated run-off.1.2 This practice does not address the determination of theperformance characteristics of an oil/water separator subjectedto the sudden release of a relatively large quantity of hydro-carbons that may appear,in pure form or at high concentration,in the influent to the separator.In this case,refer to PracticeD6157.1.3 This practice does not address the determination of theperformance characteristics of an oil/water separator subjectedto a mechanically emulsified influent such as provided by apump.1.4 This practice does not investigate the ability of theseparator to handle debris or suspended solids,that is,grit ortree leaves.1.5 While the effluent may meet code requirements for totaloil and grease content,this practice does not address thepresence of soluble organics,that is,benzene,toluene,ethyl-benzene,and zylene(BTEXs)which may be detected in theeffluent.It also does not make any provisions for the effects ofdetergents,surfactants,soaps,or any water soluble matter(thatis,salts),or any portion of an essentially insoluble matter thatmay be found in solution on separation.(Effects of certainwater soluble chemicals or solids may be investigated byadding them to the water at predetermined constant concentra-tions.)1.6 In order to estimate the effect of water temperature onthe performance of the separator,the tests described in thispractice must be performed at two water temperatures.Theselected temperatures must be at least 10C(18F)apart,withthe temperature ranging from a minimum of 0C(32F)to amaximum of 50C(122F).1.7 This practice does not make any provisions for thevariation of pH or temperature during a test run.Refer toAppendix X1 for further detail.1.8 This practice can be used with a variety of hydrocar-bons.It adopts No.2 fuel oil with a density2of 845 kg/m3(52.73 lbm/ft3)and a viscosity2of 1.9 to 4.1 centistokes at 40C(104F)and SAE 90 lubricating oil with a density2of 930kg/m3(58 lbm/ft3)at 15.5C(60F)and a viscosity(see SAEJ313)of 13.5 to 24 centistokes at 100C(212F)as thecomparative testing media.It is understood that the resultsobtained from this practice are only directly applicable to No.2 fuel oil and SAE 90 lubricating oil for the tested concentra-tions and only careful interpolation or extrapolation,or both,isallowed to other hydrocarbons.Low viscosity or high densityhydrocarbons or hydrocarbons that contain a larger fraction ofhighly soluble compounds may need to be tested separately.NOTE1No extrapolation outside the range of the tested influent oreffluent oil concentrations is allowed as performance may not be linear.Hence,to establish performance at a higher or lower concentration,theseparator shall be tested for that specific condition.In addition,linearitymust be established prior to using linear interpolation.1.9 Since regulations are based on effluent total hydrocar-bon content,this practice does not set forth any lower limits onoil particle size for the evaluation of separator efficiency.However,a standardized means for mixing oil and water shallbe specified to ensure repeatability.It must be noted howeverthat smaller particles,having a greater surface area to volumeratio,rise at a slower rate than their larger counterparts.(GuideF933 requires that 20%of all oil particles be smaller than orequal to 50 m and IMO MEPC 60(30)does not mention anyparticle size requirements but asks the user to avoid emulsioncausing chemicals.)1.10 Although the tests described in this practice intend tosimulate contaminated storm water run-off separation1This practice is under the jurisdiction of ASTM Committee D19 on Water andis the direct responsibility of D19.06 on Methods for Analysis for OrganicSubstances in WaterCurrent edition approved Dec.15,2017.Published January 2018.Originallyapproved in 1997.Last previous edition approved in 2011 as D6104 97(2011).DOI:10.1520/D6104-97R17E01.2Bolz,R.E.,and Tuve,G.L.,CRC Handbook of tables for Applied EngineeringScience,2nd Edition,CRC Press,1981.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Princip