What is Anaerobic Digestion?

Павел Катаев
6 min readMay 17, 2021

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Hi! We are animation studio Collby. This time we had to tackle a serious issue. Not only create an animated video, but explain the importance of building a new anaerobic digestion facility.

About Anaerobic Digestion facility

Durham region, Canada currently drafts their 20-year Waste Plan.

The new Mixed Waste Pre-sort and Anaerobic Digestion (AD) Facility will remove non-combustible material and recyclables from garbage bags to further increase diversion from landfills, and free-up capacity at the Durham York Energy Centre (DYEC) for garbage that can be incinerated to create electricity.

Let’s investigate a bit more.

While Durham’s population continues to grow — with an expectancy to reach more than 1 million people in the next decade — more residents will mean more organic waste, recyclables and garbage to manage.

Waste will only be accepted from Durham Region (Oshawa, Whitby, Ajax, Clarington, Pickering, Scugog, Uxbridge, Brock), including waste collected from the Region’s curbside waste collection program and from multi-residential buildings. Instead of delivering Durham’s waste directly to the Durham York Energy Centre (DYEC), Durham Region residential waste will be delivered to the new Mixed Waste Pre-Sort and Anaerobic Digestion (AD) Facility first for sorting and processing.

The facility will remove materials — such as food scraps and recyclables — from garbage collected at the curb and from multi-residential buildings. With help of anaerobic digestion organics will be broken down (degraded) by microbial bacteria in the absence of oxygen under controlled conditions.

Anaerobic digestion will be used to convert organic waste like food scraps into renewable natural gas — used to heat homes and power natural gas barbeques and vehicles. Residuals from this process will also be used to generate electrical energy that can be used in a variety of applications. All in all, anaerobic digestion is a natural composting process that uses microbes found in the environment to produce methane, which can be collected and used as a renewable natural gas. AD is a safe, proven technology used across North America and Europe.

The goal

To tell citizens of the Durham region about the benefits of mixed waste pre-sort facility and anaerobic digestion, and explain the process and how the new facility will work in conjunction with current waste management in the region.

With the help of the video, we needed to show the entire life cycle of waste recycling from garbage to a renewable source.

The issue

Waste processing facilities often cause public outrage, especially if they are located near the cities and villages. There are no stack emissions or combustion involved in the anaerobic digestion process. The building will be under negative air pressure and air from the facility must go through biofilters prior to release. There will be disposal of some residues.

We had to not only tell about the waste recycling facility, but also clearly show those people who do not understand how recycling will be arranged in their region about this process, explaining how and what kind of garbage will be recycled.

Creative process: how we’ve become Durham citizens for a few months

This is a very unusual project for us. Firstly, the end customer wasn’t a commercial company, but a municipality of Canada, so there were some peculiarities in the work, and of course, many delays due to who was the client. It’s always so with government systems. And secondly, a detailed investigation of the subject.

To make the whole look as familiar to the audience as possible, we tried to recreate the atmosphere and landscapes of the area, so that it’s recognizable from the first sight. For a fact: we’ve never been to Canada, so we studied the geography using Google Maps, photos, websites and articles. In general, a huge amount of data has been processed by us to feel like locals there.

So, for example, there are few objects that represent the climate, landscapes and nature of Durham, Canada in general like spruces, hills and fields.

Also, the facility in our video is based on a real photo of a similar facility in Athens.

When displaying the organics recycling, it wasn’t a random choice of those organics. Indeed, corn and tomatoes are quite popular crops to grow in the region. Thus, the production of corn in the country averages 8.8–11.6 million. Specifically in the Durham region, agriculture is the second-largest industry. It has grown from only traditional crops to new biomass crops for the next generation of energy, biofuels and biogas technologies.

It’s impossible to create a video without full immersion into the topic, only it helps to avoid obvious visual mistakes and get full understanding of goals and tasks. What we have to do is evoke emotions in viewers with our video, so that they have a feeling of belonging and closeness to the subject. It should encourage them to learn more about the recycling program in Canada, all the stages and processes of waste processing. It took us a lot of time and studying to understand the process and benefits ourselves. But now we’ve become more educated in sustainable lifestyle theme. For example, we learned that there is a whole Durham York Energy Centre in Durham. The centre safely recycles 140,000 tonnes of household waste per year that remains after recycling programs.

In general, Durham has been doing lots in terms of recycling for a long time. Their first 20-year recycling plan was launched in 1999. As part of the first plan, the region expanded its Green Bin and Blue Box programs and increased waste rates from 30 percent to about 63 percent.

Sustainability for us isn’t just a trend and popular topic. Most of our team regularly participates in local sustainability campaigns, collects recyclable materials, making their small, but important impact on climate change. That’s why, it was especially interesting for us to work on the project.

Here are some thought about the project from the illustrator Egor:

«As for me to draw this video, I had to go through plenty of information about Canada. I’ve never done such a big research about a lifestyle in different country. I literally saw garbage bins in my dreams and my browser history was full of everything related to recycling. This is basically how this project passed for me.»

Often in our videos we exaggerate a lot, we might remove parts of the object, we might show only the image of an object. Here, for our client, it was extremely important to preserve the realism and detail.

Art director Kostya about the project:

«Client’s approach was very serious, they carefully thought through every detail in the video. One of the important things was natural color scheme and similarity of the objects to the reality. For that they shared lots of real life photos.»

Results

We received the following review from the client, which briefly describes the work we’ve done:

A great experience! I would certainly recommend Collby Graphics. Great communication. Very professional. I’ve used them twice and both times they’ve created a high quality product that exceeded my expectations…

We thank the client for their trust, and the team for their professionalism and patience, nevertheless the project turned out to be a long one. It was interesting to work with a new issue for us and a client. We hope that soon the waste manage plan will be implemented. We hope the region’s citizens won’t have any more doubts about the facility. And of course, now all that’s left for us is to plan a trip to Canada to see the facility with our own eyes.

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