Research Catalog

Title

Biological phosphorus removal activated sludge process in warm climates / Cao Ye Shi.

Author

Cao, Ye Shi.

Publication

London ; New York : IWA Publishing, 2011.

Items in the Library & Off-site

Details

Description

xviii, 132 pages : illustrations (some color); 25 cm

Summary

• The Enhanced Biological Phosphorus Removal (EBPR) process is more economically and environmentally sustainable compared to chemical precipitation for phosphorus removal. However, the, application of EBPR in warm climates (20[¦]C - 30[¦]C) is not straightforward, and there have been few reported on-site studies. This book presents the results of detailed research on whether EBPR works in warm climates, which is part of the R&D programme of the Public Utilities Board (PUB) of Singapore. The book addresses both practical applications and the latest development in the academic field, with topics ranging from the analysis of EBPR process performance to the characterization of the microbial community, studied under on-site conditions and at different temperatures. The main points of focus are
• Warm climate EBPR performance in laboratory-, pilot- and full-scale activated sludge processes under actual site conditions;
• The stoichiometry and kinetics of P release, COD uptake in the anaerobic environment and P-uptake in the aerobic environment;
• Competition between PAO, GAO (and denitrifiers) for carbon substrates in the process;
• Shifts in PAO and GAO population fractions and their dominance in the microbial community, studied using FISH and P release and uptake batch tests;
• The inter-relationships between the system performance, process design and the microbial community; and
• EBPR for industrial wastewater treatment under warm climates. This book seeks to largely fill the knowledge gaps in biological nutrient removal in warm climates, providing unique experiences arid knowledge for researchers and engineers in wastewater process development and design, students and academic staff in civil/sanitation/environment departments, as well as engineers, consultants and managers in water companies and utilities. --Book Jacket.

Subject

• Sewage > Purification > Phosphate removal
• Sewage > Purification > Biological treatment

Bibliography (note)

• Includes bibliographical references (p. [121]-125) and index.

Contents

Machine generated contents note: 1.1.Wastewater treatment in warm climates -- 1.2.Biological nitrogen removal in warm climates -- 1.3.Enhanced biological phosphorus removal (EBPR) in warm climates -- 1.4.Focus areas of the book -- 1.5.Approaches: between up- and down-streams -- 1.6.Structure of the book -- 2.1.Biological nitrogen removal in warm climates -- 2.2.Enhanced biological phosphorus removal: PAO and GAO -- 2.2.1.Metabolisms of PAO and GAO -- 2.2.2.Temperature and sludge retention time -- 2.2.3.pH -- 2.2.4.Types of substrates and COD/P ratio -- 2.2.5.Modelling -- 2.2.6.Identification of PAO and GAO -- 2.3.An unanswered question: Whether EBPR works in warm climates under practical site conditions? -- 2.4.Objectives and the research programme -- 2.4.1.Objectives -- 2.4.2.Research programme -- 3.1.Introduction -- 3.2.Materials and methods -- 3.2.1.Site conditions -- 3.2.2.Sampling and analysis -- 3.3.Results and discussion -- 3.3.1.Hydraulic flow and characterization of conventional parameters and SCFAs of primary effluent -- 3.3.2.Performance of Enhanced Biological Phosphorus Removal (EBPR) -- 3.3.3.Fates of the SCFAs -- 3.3.4.Phosphate Accumulating Organism (PAO) development -- 3.3.5.SVI and sludge morphology changes -- 3.4.Conclusions -- 4.1.Introduction -- 4.2.Materials and methods -- 4.2.1.Activated sludge unit -- 4.2.2.Sampling and analysis -- 4.2.3.Sequencing batch reactor experiment -- 4.3.Results and discussion -- 4.3.1.Characterisation of the primary effluent -- 4.3.2.Performance development of the activated sludge process -- 4.3.3.Enhanced Biological Phosphorus Removal (EBPR) -- 4.3.4.Mechanism(s) of the Enhanced Biological Phosphorus Removal -- 4.4.Conclusions -- 5.1.Introduction -- 5.2.Materials and methods -- 5.2.1.Laboratory system and process -- 5.2.2.Sampling program and analysis -- 5.2.3.FISH and chemical staining -- 5.2.4.Phosphorus release and uptake batch test -- 5.3.Results -- 5.3.1.Characterisation of primary effluent -- 5.3.2.Performance of the process -- 5.3.3.Process analysis and microbial community study -- 5.4.Discussion -- 5.4.1.Effects of additional COD (HAc) -- 5.4.2.Effects of pH control -- 5.4.3.Anoxic and aerobic P uptake -- 5.4.4.Microbial community: PAO and GAO -- 5.4.5.Different mechanisms of EBPR -- 5.4.6.Effects of temperature -- 5.4.7.Interrelationships between temperature, carbon, pH, microbial community and performance -- 5.4.8.Denitrification, P uptake and release in the FST -- 5.4.9.EBPR in warm climates -- 5.4.10.Operational strategy of the EBPR activated sludge process to cope with seasonal temperature changes -- 5.5.Conclusions -- 6.1.Introduction -- 6.2.Materials and methods -- 6.2.1.Pilot system and process configurations -- 6.2.2.Sampling program and analysis -- 6.3.Results and discusions -- 6.3.1.Wastewater characterisation -- 6.3.2.Performance of the UASB reactor -- 6.3.3.Performance of the MBR process -- 6.3.4.Process analysis of EBPR -- 6.3.5.Microbial community study -- 6.3.6.Cleaning of the MBR and RO membranes -- 6.3.7.Effluent quality and feasibility of reuse -- 6.4.Conclusions -- 7.1.Experimental conditions -- 7.1.1.Sewage in warm climates -- 7.1.2.Process configuration -- 7.2.Major findings -- 7.2.1.Fate of HAc and HPr -- 7.2.2.Effects of additional HAc -- 7.2.3.Anoxic and aerobic P uptake -- 7.2.4.Mechanisms of the EBPR -- 7.2.5.Microbial community: PAO and GAO -- 7.2.6.Effect of temperature -- 7.2.7.Interrelationships between temperature, carbon substrate, pH, microbial community and performance -- 7.2.8.Recommendations for the practical applications of EBPR of municipal sewage treatment in warm climates -- 7.2.9.EBPR of industrial wastewater treatment in warm climates -- 7.3.Outlook -- 7.3.1.Microbiology study -- 7.3.2.Process investigation -- 7.3.3.Modelling -- 7.3.4.Long term perspective on nutrient removal.

ISBN

• 9781843393818
• 1843393816

OCLC

• ocn669756129
• 669756129
• SCSB-9233140

Owning Institutions

Princeton University Library