Delivery and Mixing in the Subsurface de Peter K. Kitanidis

Delivery and Mixing in the Subsurface: SERDP ESTCP Environmental Remediation Technology, cartea 4

Editat de Peter K. Kitanidis, Perry L. Mccarty

en Limba Engleză Paperback – 23 aug 2016

Descoperim aici o resursă tehnică ce depășește nivelul documentației oficiale prin integrarea unor strategii de implementare a proceselor de amestec natural și forțat în mediul subteran. Spre deosebire de ghidurile teoretice, volumul editat de Peter K. Kitanidis și Perry L. Mccarty oferă soluții inginerești specifice, cum ar fi utilizarea puțurilor de recirculare pentru a optimiza contactul dintre aditivi și contaminanți. Notăm cu interes capitolul dedicat barbotării in situ (sparging) pentru livrarea gazelor, o tehnică esențială pentru accelerarea proceselor de remediere care, în mod natural, ar dura decenii.

Organizarea volumului reflectă o progresie logică, pornind de la fundamentele transportului și amestecului către modele hidrogeochimice complexe. Ne-a atras atenția abordarea practică a sistemelor de baraj permeabile și a reactoarelor in situ bazate pe timpul de parcurs, elemente care permit inginerului de mediu să dimensioneze corect intervenția în funcție de caracteristicile acviferului. Ca și Fred C. Payne în Remediation Hydraulics, autorii distilează experiență reală în principii acționabile, însă acest volum pune un accent deosebit pe eficiența mecanică a sistemelor de livrare.

Publicat în seria SERDP ESTCP Environmental Remediation Technology, acest tratat de 356 de pagini furnizează instrumentele necesare pentru a trece de la simpla monitorizare a contaminării la intervenția activă. Comparativ cu In Situ Remediation Engineering de Suthan S. Suthersan, care oferă un ghid general, lucrarea de față se specializează pe dinamica fluidelor și pe optimizarea procesului de mixing, oferind soluții pentru depășirea limitărilor impuse de mediile poroase complexe.

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Specificații

ISBN-13: 9781493943647
ISBN-10: 1493943642
Pagini: 356
Ilustrații: XXX, 325 p.
Dimensiuni: 193 x 260 x 20 mm
Greutate: 0.74 kg
Ediția:Softcover reprint of the original 1st edition 2012
Editura: Humana
Colecția SERDP ESTCP Environmental Remediation Technology
Seria SERDP ESTCP Environmental Remediation Technology

Locul publicării:New York, NY, United States

De ce să citești această carte

Această carte este indispensabilă cercetătorilor și inginerilor de mediu care proiectează sisteme de remediere a apelor subterane. Cititorul câștigă o înțelegere profundă a modului în care puțurile de recirculare și barierele reactive pot fi configurate pentru a maximiza eficiența tratamentului in situ, reducând timpul și costurile de decontaminare prin aplicarea unor modele hidraulice avansate.

Descriere scurtă

This volume is meant to provide the practitioner with information on the natural mixing processes occurring in aquifers as well as to describe basic strategies that can be implemented to enhance mixing in particular cases. For example, when it comes to mixing miscible liquids, one can speed up mixing in the formation by manipulating the flow such as through the use of recirculation wells. Furthermore, much of the mixing can be achieved partially within recirculation wells themselves, where contaminated water is admixed with additives, volatile products may be removed through a vapor mass exchanger, etc. Thus, adding mixing wells can significantly increase the performance of the delivery and mixing system and speed up the process of remediation.

Cuprins

Preface.- About the Editors.- External Reviewers.- Introduction.- Transport and Mixing.- Hydrogeochemical Models.- Travel-Time Based Reactive Transport Modeling for in situ Subsurface Reactor.- Recirculation Systems.- Permeable Barrier Walls.- In situ Sparging for Delivery of Gases in the Subsurface.- Intrinsic Remediation in Natural-Gradient Systems.- Source Remediation Challenges.- Appendix A.- Appendix B.- Appendix C.- Index.

Textul de pe ultima copertă

This volume describes the principles of chemical delivery and mixing systems and their design and implementation for effective in situ remediation. The intended audiences include the decision makers, practicing engineers and hydrogeologists who will select, design and operate remedial systems, as well as the researchers seeking to improve the current state of the science and technology. Our hope is that this volume will serve as a useful resource to assist remediation professionals in designing, applying and developing remedial technologies as effectively as possible.
Topics addressed in this volume include:
·         An overview of the current state of understanding related to in situ chemical delivery and mixing, including a brief review of some of the remaining challenges and ongoing research.
·         A tutorial on the reactions and processes of importance in groundwater remediation. Chapter 2 focuses on chemical and biological processes, whileChapter 3 focuses on transport and mixing.
·         A discussion of available hydrogeochmicalmodeling approaches, including a detailed discussion of the travel-time approach to modeling. Protocols for practical implementation for design and monitoring of processes are included.
·         Design issues and principles for introducing and mixing chemicals with groundwater contaminants are discussed, including:
§ Recirculation systems, where mixing is controlled through and takes place mostly in wells is presented. The challenges of operating and maintaining injection-extraction wells, the non-uniform distribution of biomass, plugging issues, and strategies such as pulsing are discussed. Case studies are provided.
§ The use and design of reactive barriers—where contaminants are brought through normal groundwater advection to the reacting chemicals contained within permeable barrier walls through which the groundwater passes—are discussed.
§ Technologiessuch as air sparging used for introducing and mixing gaseous reactants as well as for removing volatile contaminants are discussed. Ageneral background on processes for mixing of gases is provided along with design issues forair sparging. Case studies are included.
§ Intrinsic remediation in natural-gradient systems, where the kinetics are controlled through mixing of contaminant plumes with ambient species, such as dissolved oxygen, over long periods of times is covered. Issues including monitoring and estimation of long-term reaction rates, lengths of plumes, and other important parameters are illustrated with case studies.
§ The special case of source remediation and its challenges are discussed.
Each chapter in this volume has been thoroughly reviewed for technical content by one or more experts in each of the subject areas covered. The editors and chapter authors have produced a well-written and up-to-date treatise that we hope will be a useful reference for those making decisions on remediation of contaminated groundwater and for those involved in research and development of advanced technology for the in situ remediation of groundwater.

Caracteristici

Emphasis on what the practitioner needs to know about delivery and mixing in the subsurface Describes the principles of chemical delivery and mixing systems and their design and implementation for effective in situ remediation Numerous case studies are provided to give readers real examples of the topics at hand Includes supplementary material: sn.pub/extras