O Organic Waste Recycling r Organic Waste Recycling g a TECHNOLOGY, MANAGEMENT AND SUSTAINABILITY n TECHNOLOGY, MANAGEMENT AND SUSTAINABILITY 4TH EDITION i c Chongrak Polprasert and Thammarat Koottatep 4TH EDITION W This fourth edition of Organic Waste Recycling is fully updated with new material a Chongrak Polprasert and Thammarat Koottatep to create a comprehensive and accessible textbook: s t • New chapter on Constructed wetlands for wastewater and faecal sludge stabilization e • New sections on: Waste recycling vs. climate change and water; Faecal sludge R and its characteristics; and Hydrothermal carbonization technology; as well as up-to-date environmental criteria and legislation and environmental risk assessment. e c • New case studies with emphasis on practices in both developed and developing y countries have been included; along with more exercises at the end of chapters c to help the readers understand the technical principles and their application l i • Novel concepts and strategies of waste management are presented n g • Up-to-date research findings and innovative technologies of waste recycling program are provided This textbook is intended for undergraduate and graduate students majoring in C h environmental sciences and engineering as well as researchers, professionals and o n g policy makers who conduct research and practices in the related fields. It is essential r a k reading for experts in environmental science and engineering and sustainable waste P o lp reuse and recycling in both developed and developing countries. r a s e r t a n d T h a m m a r a t K o o iwapublishing.com t t a t @IWAPublishing ep ISBN: 9781780408200 (Paperback) ISBN: 9781780408217 (eBook) Organic Waste Recycling Organic Waste Recycling Technology, Management and Sustainability Fourth Edition Chongrak Polprasert Thammasat University, Bangkok, Thailand Thammarat Koottatep Asian Institute of Technology, Bangkok, Thailand Published by IWA Publishing Alliance House 12 Caxton Street London SW1H 0QS, UK Telephone: +44 (0)20 7654 5500 Fax: +44 (0)20 7654 5555 Email: [email protected] Web: www.iwapublishing.com First published 2017 © 2017 IWA Publishing Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the UK Copyright, Designs and Patents Act (1998), no part of this publication may be reproduced, stored or transmitted in any form or by any means, without the prior permission in writing of the publisher, or, in the case of photographic reproduction, in accordance with the terms of licenses issued by the Copyright Licensing Agency in the UK, or in accordance with the terms of licenses issued by the appropriate reproduction rights organization outside the UK. 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British Library Cataloguing in Publication Data A CIP catalogue record for this book is available from the British Library ISBN: 9781780408200 (Paperback) ISBN: 9781780408217 (eBook) Contents About the authors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv Abbreviations and symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi Atomic weight and number of elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix Conversion factors for SI units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Problems and Need for Organic Waste Recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Objectives and Scope of Organic Waste Recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2.1 Agricultural reuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.2.2 Bioenergy production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.2.3 Aquacultural reuses .............................................. 7 1.2.4 Organic wastewater reuse ......................................... 8 1.3 Integrated and Alternative Technologies .................................... 9 1.3.1 Kamol Kij Co. Rice Mill Complex and Kirikan Farm, Thailand (Ullah, 1979) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.3.2 Maya farms, the Philippines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.3.3 Werribee farm, Australia .......................................... 13 1.3.4 Public toilet with biogas plant, Naivasha, Kenya ........................ 14 1.3.5 Cogeneration at Rayong municipality, Thailand . . . . . . . . . . . . . . . . . . . . . . . . 15 1.4 Feasibility and Social Acceptance of Waste Recycling ......................... 16 1.5 Waste, Water, Climate Change and Sustainability . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 1.6 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 1.7 Exercises ........................................................... 22 vi Organic Waste Recycling Chapter 2 Composition and characteristics of organic wastes . . . . . . . . . . . . . . . . . . . . . 23 2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 2.2 Human Wastes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.2.1 Wastewater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2.2.2 Faecal and wastewater sludge .................................... 26 2.3 Organic Solid Wastes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 2.4 Agricultural Wastes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 2.4.1 Agricultural wastes management systems – case study ................. 36 2.5 Agro – Industrial Wastes ................................................ 37 2.5.1 Tapioca industry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 2.5.2 Palm oil industry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 2.5.3 Sugar industry .................................................. 47 2.5.4 Brewing industry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 2.5.5 Meat and poultry products industry .................................. 51 2.5.6 Fish and fisheries products industry ................................. 61 2.5.7 Fruit and vegetable industry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 2.6 Pollution Associated with Organic Wastes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 2.7 Health Impact of Organic Waste Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 2.7.1 Indicator organisms ............................................. 69 2.8 Sustainability Strategies for Organic Waste Management . . . . . . . . . . . . . . . . . . . . . . 76 2.8.1 Life cycle assessment (LCA) ...................................... 79 2.8.2 Pollution Prevention (P2) ......................................... 82 2.8.3 Cleaner production (CP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 2.9 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 2.10 Exercises ........................................................... 103 Chapter 3 Composting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 3.1 Uses and Application .................................................. 107 3.2 Physical and Biochemical Processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 3.3 Microbiology of Composting ............................................ 113 3.4 Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 3.4.1 Nutrient balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 3.4.2 Particle size and structural support of compost pile .................... 118 3.4.3 Moisture control ................................................ 119 3.4.4 Aeration requirements ........................................... 123 3.4.5 Temperature and pH ............................................ 124 3.5 Composting Maturity .................................................. 125 3.6 Composting Systems and Design Criteria .................................. 126 3.6.1 Composting toilets .............................................. 127 3.6.2 Windrow composting ............................................ 133 3.6.3 In-vessel systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 3.6.4 Horizontal In-vessel system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Contents vii 3.7 Public Health Aspects of Composting ..................................... 142 3.7.1 Die-offs of primary pathogens .................................... 142 3.7.2 Health risks from secondary pathogens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 3.8 Utilization of Composted Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145 3.8.1 Utilization as fertilizer and soil conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 3.8.2 Utilization as feed for fish ........................................ 149 3.9 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 3.10 Exercises ........................................................... 154 Chapter 4 Bioenergy production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 4.1 Biofuels ............................................................ 160 4.2 Bioethanol ......................................................... 164 4.2.1 Bioethanol production ........................................... 165 4.2.2 Bioethanol production process .................................... 166 4.2.3 Case studies of ethanol production ................................. 169 4.3 Biomethanol ......................................................... 169 4.4 Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 4.4.1 Process technologies for biodiesel production . . . . . . . . . . . . . . . . . . . . . . . . 173 4.4.2 Case studies of biodiesel production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 4.5 Biogas Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176 4.5.1 Benefits and limitations of biogas technology ......................... 177 4.5.2 Anaerobic digestion (AD) process .................................. 179 4.5.3 Environmental requirements for anaerobic digestion . . . . . . . . . . . . . . . . . . . 187 4.5.4 Operation and types of biogas digesters ........................... 190 4.5.5 Biogas production .............................................. 211 4.5.6 End uses of biogas and digested slurry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216 4.5.7 Case studies of biogas production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 4.6 Hydrothermal Carbonization Process ..................................... 221 4.6.1 Hydrochar characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222 4.6.2 Environmental and energy requirements ........................... 226 4.6.3 Mechanisms of hydrothermal carbonization . . . . . . . . . . . . . . . . . . . . . . . . . 229 4.6.4 Hydrochar production and yields .................................. 233 4.6.5 A case study of industrial-scale HTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 4.6.6 Applications of hydrochar ....................................... 235 4.7 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241 4.8 Exercises ........................................................... 249 Chapter 5 Algal production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252 5.1 Algae Classification .................................................. 253 5.2 Benefits, Objectives and Limitations ...................................... 257 5.2.1 Wastewater treatment and nutrient recycling . . . . . . . . . . . . . . . . . . . . . . . . . 257 5.2.2 Bioconversion of solar energy .................................... 258 5.2.3 Pathogen destruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258 viii Organic Waste Recycling 5.3 Algal-Based Wastewater Treatment Systems .............................. 259 5.3.1 Open pond systems ............................................ 261 5.3.2 Closed photobioreactors systems ................................. 268 5.3.3 Immobilized systems ............................................ 272 5.4 Environmental Requirments ............................................ 274 5.4.1 Carbon and nutrients ............................................ 274 5.4.2 Dissolved oxygen (DO) .......................................... 275 5.4.3 Light and temperature ........................................... 276 5.4.4 pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278 5.4.5 Inhibitory substances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279 5.4.6 Biotic factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279 5.5 Process Design and Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280 5.5.1 Depth ....................................................... 280 5.5.2 Hydraulic retention time (HRT) .................................... 281 5.5.3 BOD loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283 5.5.4 Mixing and recirculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283 5.6 Algal Harvesting Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288 5.6.1 Filtration and screening ......................................... 290 5.6.2 Centrifugation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 5.6.3 Coagulation/flocculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 5.6.4 Sedimentation ................................................ 297 5.6.5 Flotation ..................................................... 297 5.6.6 Drying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 5.7 Utilization of Wastewater-Grown Algae ................................... 300 5.7.1 Algae as food and feed ......................................... 300 5.7.2 Algae for fertilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 5.7.3 Algae for biofuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305 5.7.4 Algae as source of chemicals/pharmaceuticals . . . . . . . . . . . . . . . . . . . . . . 305 5.7.5 Algae as a future life support technology ........................... 308 5.8 Public Health and Safety .............................................. 308 5.8.1 Public health risks management .................................. 309 5.9 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311 5.10 Exercises .......................................................... 326 Chapter 6 Fish, chitin, and chitosan production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328 6.1 Objectives, Benefits and Limitations ...................................... 331 6.1.1 Waste stabilization, nutrient and resource recycling ................... 332 6.1.2 Improved wastewater effluent quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332 6.1.3 Better food conversion ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333 6.1.4 Operational skill and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333 6.2 Waste-Fed Aquaculture ............................................... 334 6.2.1 Waste-fed aquaculture fish feeding habits . . . . . . . . . . . . . . . . . . . . . . . . . . 335 6.2.2 Biological food chains in waste-fed ponds . . . . . . . . . . . . . . . . . . . . . . . . . . 337 6.2.3 Biochemical reactions in waste-fed ponds . . . . . . . . . . . . . . . . . . . . . . . . . . 339 Contents ix 6.3 Classification of Waste-Fed Aquaculture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341 6.3.1 Integrated systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341 6.3.2 Intensive systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345 6.4 Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347 6.4.1 Light ......................................................... 347 6.4.2 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347 6.4.3 Dissolved oxygen (DO) .......................................... 347 6.4.4 Ammonia concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351 6.4.5 pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352 6.4.6 Carbon dioxide ............................................... 352 6.4.7 Hydrogen sulfide (H S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352 2 6.4.8 Heavy metals and pesticides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352 6.4.9 Stocking density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353 6.5 Design Criteria ...................................................... 354 6.5.1 Organic loading, DO and fish yield models .......................... 354 6.5.2 Fish culture and stocking density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358 6.5.3 Water supply ................................................. 360 6.5.4 Pond size .................................................... 360 6.5.5 Pond arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360 6.5.6 Case studies ................................................. 363 6.6 Chitin and Chitosan .................................................. 368 6.6.1 Chitin ....................................................... 369 6.6.2 Chitosan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374 6.6.3 Case study . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376 6.7 Utilization of Fish, Chitin and Chitosan ................................... 377 6.7.1 Utilization of waste-fed aquaculture fish . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377 6.7.2 Utilization of chitin and chitosan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379 6.8 Public Health and Safety .............................................. 384 6.9 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386 6.10 Exercises .......................................................... 398 Chapter 7 Aquatic weeds and their utilization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400 7.1 Objectives, Benefits, and Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400 7.1.1 Objectives ................................................... 400 7.1.2 Benefits ..................................................... 400 7.1.3 Limitations .................................................... 401 7.2 Major Types and Functions ............................................. 401 7.2.1 Submerged type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403 7.2.2 Floating type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403 7.2.3 Emergent type ................................................ 403 7.3 Weed Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404 7.3.1 Water content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404 7.3.2 Protein content ............................................... 404 7.3.3 Mineral content ............................................... 406 7.3.4 Miscellaneous ................................................ 406