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Record Nr. |
UNINA9911019498003321 |
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Autore |
Gerardi Michael H |
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Titolo |
Settleability problems and loss of solids in the activated sludge process / / Michael H. Gerardi |
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Pubbl/distr/stampa |
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New York, : Wiley-Interscience, c2002 |
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ISBN |
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9786610314416 |
9781280314414 |
1280314419 |
9780470247433 |
0470247436 |
9780471272748 |
0471272744 |
9780471471646 |
047147164X |
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Descrizione fisica |
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1 online resource (191 p.) |
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Collana |
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Wastewater microbiology series |
Environmental Protection magazine series |
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Disciplina |
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Soggetti |
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Sewage - Purification - Activated sludge process |
Sewage disposal |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Nota di bibliografia |
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Includes bibliographical references (p. 163-165) and index. |
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Nota di contenuto |
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Settleability Problems and Loss of Solids in the Activated Sludge Process; Contents; Preface; PART I OVERVIEW; 1 The Activated Sludge Process; 2 Floc Formation; 3 A Floc Formation Model; 4 Interruption of Floc Formation; PART II SETTLEABILITY PROBLEMS AND LOSS OF SOLIDS; 5 Introduction; 6 Undesired Filamentous Growth; 7 Nutrient-Deficient Floc Particles; 8 Denitrification; 9 Sheared Floc Particles; 10 Dispersed Floc Particles; 11 Heavy Metals and Congealed Floc Particles; 12 Low Dissolved Oxygen Concentration; 13 Young Sludge Age; 14 Floc Particles Lost Through Sludge Aging |
15 Slug Discharge of Soluble cBOD16 Viscous Bulking or Zoogloeal Growth; 17 Increase in Percent MLVSS; 18 Colloidal Floc Particles; 19 Temperature; PART III FOAM AND SCUM; 20 Production and |
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Accumulation of Foam and Scum; 21 Identification of Foam; 22 Controlling Foam Production and Accumulation; PART IV SETTLEABILITY TESTING; 23 Settleability Testing and Settling Rate; 24 Settleability Testing: Microscopic Analyses; APPENDIX I F/M, HRT, MCRT, MLVSS, SLUDGE AGE, SVI; APPENDIX II MICROSCOPIC TECHNIQUES; References; Abbreviations and Acronyms; Chemical Compounds and Elements; Glossary; Index |
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Sommario/riassunto |
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The activated sludge process is the most versatile, commonly used wastewater treatment system in North America; however, many activated sludge processes frequently experience operational problems related to poor compaction or settleability of secondary solids and loss of secondary solids from the clarifier. Eschewing the technical jargon and copious chemical equations found in the majority of wastewater studies, Settleability Problems and Loss of Solids in the Activated Sludge Process speaks directly to plant operators, showing them how to identify and solve common problems and a |
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