Abstract

Anaerobic digestion technology is one of the emerging and very effective mode of treating the waste in the production of renewable energy. In the present world with the increase in pollution and mankind there is very much necessity for the renewable energy. In this classification system the anaerobic digesters are grouped depend on the various factors like temperature, feeding mode, solid content, number of stages, organic loading rate and biomass. There are several Fullscale case studies on anaerobic digestion technology of different parts on the globe included in the report. The potential is very well examined and explained on how important and better is the method of anaerobic digestion for the treatment of waste with production and utilization of energy which is produced by the waste treated.

Highlights

  • Over the past few years, Anaerobic digestion is considered as one of the dependable modes of treating the disintegrated sludge

  • Anaerobic digestion technology is a viable method in treating organic wastes and produce renewable energy and recover nutrients for re-use

  • For all the processes of anaerobic digestion to be carried out there are specially designed tanks or reactors based on the requirements and type of method used for the treatment which are called as anaerobic digesters

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Summary

Introduction

Over the past few years, Anaerobic digestion is considered as one of the dependable modes of treating the disintegrated sludge. Anaerobic digestion technology is a viable method in treating organic wastes and produce renewable energy and recover nutrients for re-use (like agriculture). Organic wastes from industry, wastewater treatment plants or households can be treated in biogas plants to produce energy-rich bio-methane. Acidogenesis This process in the further breakdown of remaining organic components after hydrolysis with the help of acidogenic or fermentative bacteria This process produces VFAs along with carbon dioxide, ammonia and hydrogen sulfide. For all the processes of anaerobic digestion to be carried out there are specially designed tanks or reactors based on the requirements and type of method used for the treatment which are called as anaerobic digesters. The waste or the input collected are the feedstock that are treated with the anaerobic technology with various different digesters depending up on the requirements at the digester plants.

Mesophilic anaerobic digester
Disadvantages of mesophilic anaerobic digesters
Thermophilic anaerobic digester
Case study – Linko Gas, Denmark
Psychrophilic anaerobic digester
Single stage anaerobic digester
Batch system anaerobic digester
Dry type anaerobic digester
Advantages of dry anaerobic digester
Low rate anaerobic digester
One stage high rate anaerobic digester
Two stage high rate anaerobic digester
Suspended growth anaerobic digester
Food Processing Systems
Advantages of covered lagoons
Complete Mix Digester
Plug Flow digester
Fixed Film Digester
Anaerobic membrane bioreactor
11.1 Anaerobic digestion technology as a mode of renewable energy
12.2 Canadian anaerobic digestion technology organic processing status
Findings
12.3 The future of anaerobic digestion technology in Canada

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