esm223_09_Other_Reading_PRB_Figures

esm223_09_Other_Reading_PRB_Figures - Table 1.1. Widespread...

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Unformatted text preview: Table 1.1. Widespread groundwater caniaminart'oa and applicabie treatment processes ( Eastern Research Group, 1996) Treatment pl‘OCCSS '5? .5 .E ‘5 = E -= 2% g .9- g i: U .. 9 >1 '3 i 0 Heavy metals + CrVl + Mercury + Arsenic o VOCS + SVOCs + Pesticides + PCBs + + Mineral oil + VOCs, volatile organic compounds; SVOCs. semivolalilc organic compounds; PCBs. polychlorinatcd biphcnyls +. applicable; 0, potentially applicable Reduction +0 + Adsorption to so rfaccs G ++++o+o lon exchange ++++c++++ Biological degradation OOO+O + + Electrochemical treatment Ul traviolellozonc ++++co Air stripping + Flotation a ++oc + Gravity separation C ++GG Distillation +++++ 500 400 O . . O Operating cost 350 . O 300 250 200 150 100 50 Capital cost (US $fm3} Operating cost {US Sfmal Volume {mafyear} Fig. I. 7. Capital and operating 60513 0f32 pump-and-rrem sires adjusted for {reared vofume per year 40 000 0 Permeable 35 000 reactive barrier a 30000 I Pump-and-treat g technofogy ‘" 25 000 X {B m 20 000 2 ‘5 15 000 D D 10 000 5000 D 0 10 20 30 4o 50 Years Fig. 1.8. Cost comparison of groundwater remediation between pump and treat technofogy and PR3: (Reefer et aL, I999) Reactive barrier Cleaned groundwater Groundwater flow [a] Funnel Cleaned groundwater Groundwater flow {D} Oil Skimman Well N Reaction {Optional} ,n— 34'4" Crushed FIGURE 2. Biowall pilot test design concept. ELEVATION VIEW T0 EAST. TOWARD COAL Pl LE FIUNOFF BASIN SIDE VIEW ‘— COAL FILE FIUNOFF BASIN SEPHON LINE & SECONDARY TREATMENT— 36'-2" 6" x 6" PROTECTIVE HOUSING WITH LOCKING CAP. 4" WC CAP _ REMOVABLE 2 LAYER 0F NONWOVEN GEOTEXTI LE 2 LAYER OF NONWO‘VEN GEO‘I‘EJCI'ILE #4 LIME STONE AGGREGATE TYPFOFID‘I'I'd Alix-1B ELE 103.45 II. ' ' ELEV‘IOBA? It. I I APPDX. ELE'IIII 1015 II. -- -- appear ELEVIOéjfL h— BOTTOM OF TRENCH |_| ‘ I_. _ _ ,._0,.1._0,. 193-” 11- APPROX 2-0" 4 Rows OF 333" BLAHOLES WITH 4" SPACING Figure 5 Diagram of D—Area Permeable Reactive BarrierfGeoSiphon primary treatment trench. Reagent Injection Hanford Contaminants Disposal Pond Permeable Treatment Zone ' Potentiai Candidate [or Redox Treatmenl " Favorable Candidate for Hedox Treatment Figure 1 In Squ permeable trealmcm zone concept. Downgradient Groundwater I I Corrosion: Fe' + H10 Fe" + H: + 0"- Fez*_, F‘e3+ . ' H I ' ' ' " Ferric hydroxide Meals and Radionuclllks Reductlve precipitation (U. Tc. Cr) ' - precipimu‘ dogging (Cr. U.Tc, etc] _p. - - ' ' . W... Dissolved I-ll on microbial aellvlty (ml... sulfate and met-I rcdurlng blunt] ._.._._..p. ' Adsorptionlco-precipitntion (U, Tc. Cr) ' on ferrous and ferric hydroxides _ Rednclive dehalogenatlon of organics ' unmanned organics N0" ---—h- '. Nitrate and sulfate reductiori " . ' I)“ (depending 0“ “I! 1- . . .- . ' _. buffering “parity of IO“ 90" —-——II- - Formation of pyrite (F25) precipitetes I ._ ‘ "1" ¥'°“""‘"‘") co;- Siderile and niche precipitates - F ignre 2 Examples of possible hiogcochemicai reactions occurring within and in the vicinity of the iron rcaclivc barrier. ...
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esm223_09_Other_Reading_PRB_Figures - Table 1.1. Widespread...

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