03795nam 2200685Ia 450 991101949800332120200520144314.097866103144169781280314414128031441997804702474330470247436978047127274804712727449780471471646047147164X(CKB)111087027111050(EBL)157049(OCoLC)475872401(SSID)ssj0000244521(PQKBManifestationID)11218536(PQKBTitleCode)TC0000244521(PQKBWorkID)10169773(PQKB)10767949(MiAaPQ)EBC157049(Perlego)2774992(EXLCZ)9911108702711105020020719d2002 uy 0engur|n|---|||||txtccrSettleability problems and loss of solids in the activated sludge process /Michael H. GerardiNew York Wiley-Intersciencec20021 online resource (191 p.)Wastewater microbiology seriesEnvironmental Protection magazine series"Volume II".9780471206941 0471206946 Includes bibliographical references (p. 163-165) and index.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 Aging15 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 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; IndexThe 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 aWastewater microbiology series.Environmental Protection magazine series.SewagePurificationActivated sludge processSewage disposalSewagePurificationActivated sludge process.Sewage disposal.628.354Gerardi Michael H512227MiAaPQMiAaPQMiAaPQBOOK9911019498003321Settleability problems and loss of solids in the activated sludge process4419636UNINA