LEADER 05293nam 2200637 450 001 9910788280103321 005 20230120013036.0 035 $a(CKB)2670000000616713 035 $a(EBL)2053978 035 $a(SSID)ssj0001537628 035 $a(PQKBManifestationID)11876264 035 $a(PQKBTitleCode)TC0001537628 035 $a(PQKBWorkID)11518859 035 $a(PQKB)11295020 035 $a(MiAaPQ)EBC2053978 035 $a(Au-PeEL)EBL2053978 035 $a(CaPaEBR)ebr11056853 035 $a(CaONFJC)MIL785996 035 $a(OCoLC)909368068 035 $a(EXLCZ)992670000000616713 100 $a20150601h20152015 uy 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aGroundwater arsenic remediation $etreatment technology and scale up /$fParimal Pal 210 1$aAmsterdam, [Netherlands] :$cButterworth-Heinemann,$d2015. 210 4$dİ2015 215 $a1 online resource (329 p.) 300 $aDescription based upon print version of record. 311 $a0-12-801281-1 311 $a0-12-801377-X 320 $aIncludes bibliographical references at the end of each chapters and index. 327 $aFront Cover; Groundwater Arsenic Remediation: Treatment Technology and Scale UP; Copyright; Dedication; Contents; Acknowledgements; Preface; Chapter 1: Introduction to the Arsenic Contamination Problem; 1.1. Arsenic chemistry; 1.2. Occurrence and causes of arsenic in groundwater; 1.3. Regulations and maximum contaminant level of arsenic; 1.4. Toxicity and health hazards; 1.5. Introduction to methods of arsenic removal; 1.5.1. Chemical Precipitation; 1.5.1.1. Alum Precipitation; 1.5.1.2. Iron Precipitation; 1.5.1.3. Lime Softening; 1.5.1.4. Coprecipitation; 1.5.2. Adsorption 327 $a1.5.3. Ion Exchange1.5.4. Membrane Filtration; 1.5.4.1. Pressure-Driven Membrane Filtration; 1.5.5. Electrodialysis; 1.5.6. Temperature-Driven Membrane Filtration; 1.5.7. Hybrid Methods of Arsenic Removal; References; Chapter 2: Chemical Treatment Methods in Arsenic Removal; 2.1. Different forms of arsenic in groundwater; 2.2. Chemical precipitation; 2.2.1. Alum precipitation; 2.2.2. Lime softening; 2.2.3. Iron precipitation; 2.2.4. Enhanced coagulation; 2.2.5. Coprecipitation; 2.3. Physical separation; 2.3.1. Diffuse-double-layer theory 327 $a2.3.2. Destabilization of colloids and settling of particles2.3.2.1. Double-layer compression; 2.3.2.2. Adsorption and neutralization of charge; 2.3.2.3. Enmeshment-precipitation; 2.3.2.4. Interparticle bridging; 2.3.3. Filtration; 2.3.3.1. Rapid sand filtration; 2.3.3.2. Backwashing; 2.4. Modeling and simulation of the physico-chemical processes for scaleup; 2.4.1. Introduction; 2.4.2. Operation of the treatment plant; 2.4.3. Measuring arsenic concentration in water; 2.4.4. Computation of percentage removal of arsenic; 2.4.5. Modeling and simulation of physico-chemical treatment process 327 $a2.4.5.1. Process kinetics and modeling basis2.4.5.2. Modeling the process; 2.4.5.3. Material balance for the oxidizer unit; 2.4.5.4. Component mass balance of arsenic; 2.4.5.5. Component mass balance of oxidant; 2.4.5.6. Material balance of the coagulator and flocculator; 2.4.5.7. Material balance for the sedimentation unit; 2.4.5.8. Filtration Unit; 2.4.6. Determination of the model parameters; 2.4.6.1. Computation of flow rate and concentration of oxidant; 2.4.6.2. Computation of root mean square velocity gradient (G) in the coagulator/flocculator 327 $a2.4.6.3. Computation of average flock size (dQM) in the coagulator-flocculator unit2.4.6.4. Computation of flow rate and concentration of coagulant; 2.4.6.5. Determination of settling velocity and superficial velocity in sedimentation unit; 2.4.6.6. Determination of the filtration pressure drops due to filter cake and filter medium; 2.4.6.7. Effects of the operating parameters; 2.4.6.8. Effect of pH; 2.4.6.9. Effect of oxidant dose; 2.4.6.10. Effect of coagulant dose; 2.4.6.11. Effect of feed concentration; 2.4.7. Performance of the system and the model 327 $a2.5. Optimization and control of treatment plant operations 330 $a Arsenic abatement from groundwater in locations with a central water distribution system is relatively simple. The real challenge is selecting the most effective and affordable treatment and scale up option for locations which lack the appropriate infrastructure. Groundwater Arsenic Remediation: Treatment Technology and Scale UP provides the latest breakthrough groundwater treatment technologies and modeling and simulation methods for project scale up and eventually field deployment in locations which lack the proper central water distribution system to ensure arsenic free groundwater. Covers 606 $aArsenic$xEnvironmental aspects 606 $aArsenic compounds 606 $aGroundwater$xPollution 615 0$aArsenic$xEnvironmental aspects. 615 0$aArsenic compounds. 615 0$aGroundwater$xPollution. 676 $a628.52 700 $aPal$b Parimal$0861864 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910788280103321 996 $aGroundwater arsenic remediation$93711770 997 $aUNINA