How AI can help reduce landfill waste

Hera brings AI-based automation to the circular economy
by Rob Spencer
5-minute read

How can AI help address the world’s most serious challenges?

It won’t be simple. When you’re dealing with complex, real-world problems, you can’t just flip a switch and have AI give you the answer. In addition to painstaking work, it will take a willingness to experiment and real openness to change.

Hera SpA, a leading multi-utility in Italy, is putting these virtues to work as it explores how AI can help minimize landfill waste by directing more reusable material to outcomes that are better for the environment.

HERA control room

Across 89 plants, Hera treats

6.3 million

tons of waste each year

Currently, the recycling process requires

1,400

people to manually spot reusable material

Hera has adopted, with absolute conviction, the circular economy.
Andrea Bonetti
Manager of IT Architecture, Hera SpA
Bringing innovation to environmental stewardship

As a provider of electricity, water cycle management and heating services, and as Italy’s largest waste management and recycling company, Hera is on the front lines of today’s battle to reduce waste and minimize environmental damage. The company has a reputation as an innovator, and it is bringing a forward-looking spirit to environmental stewardship.

Andrea Bonetti, Hera’s Manager of IT Architecture, explains, “Hera has adopted, with absolute conviction, the circular economy.” Where traditional recycling practices may be one arc in the cycle of re-use, Hera offers integrated solutions that help complete the circle. With plastics, for example, it not only recovers waste but also incorporates it into production of high-quality new products that are themselves recyclable. “Today, in our territories, most of the waste is recovered,” says Bonetti. “Only a small portion ends up burnt, but this is burnt in waste-to-energy plants, producing new energy.”

Rolls of recycled material stacked
Stack of compressed plastic containers

The recovery process, of course, depends on quickly finding and separating reusable material from vast quantities of refuse. It was this process where Bonetti and his colleague, Alessandro Collina, Hera’s Head of IT Innovation, decided to explore how AI-powered automation could improve efficiency and help channel more material to new use.

The challenge is twofold. Evaluating the potential of AI for waste sorting is one part. The other part is having the flexibility to incorporate this kind of innovation and scale it from laboratory to enterprise dimensions.

For both sides of the challenge, Hera decided to work with IBM. The company engaged IBM Garage™ — a framework for digital transformation — to help design, build and scale an AI solution. And Hera worked with IBM® Global Business Services® and applied IBM Cloud Paks® to modernize its application infrastructure for greater openness to innovation.

Finding the treasure in the trash

Currently, Hera personnel analyze waste manually. As trucks unload at the entrance to the plants and the trash is pushed toward conveyors, spotters watch for recoverable materials — including plastics, glass, aluminum and organic material — and help direct downstream sorting. It’s an onerous job on its own; but consider it at scale: 1,400 spotters across 89 plants. 6.3 million tons of waste treated every year. In other words, there is potential for much greater efficiency.

The vision is to capture video of incoming trash and have AI recognize characteristics of items and materials that would qualify them for recovery and reuse. “This could have a decisive impact on the costs of recovery and disposal activities, which is the focus of the circular economy,” explains Bonetti.

To realize this vision, Bonetti explains, “We needed a partner who could really go beyond a proof of concept and facilitate the project with both working methodologies and effective tools. We thought we could find all this in the IBM Garage.”

Recycling workers on sorting line
Garbage truck with worker

For the user-centered and collaborative IBM Garage team, the first step toward a solution was a design thinking workshop that involved gaining firsthand experience of the working environment. “The guys at the Garage had to ‘get their hands dirty’ — a particularly fitting metaphor in this case,” says Bonetti. “We have learned from experience to immerse machine learning specialists in reality, which is always much more complex than the laboratory. So the Garage team came to see a plant. Waste is, by definition, deformed and crowded, and the lighting conditions are variable. It is not like recognizing kittens in Facebook photos!”

In fact, the Hera and IBM Garage teams quickly recognized that the plants were not the right place to capture video. There was too much material going by in too little time. Instead, they identified a better vantage point upstream.

By mounting cameras on trash trucks, they could video the smaller amounts of material falling out of bins. “It’s still an extremely rapid passage of images,” says Bonetti. “But the study of these images has allowed us to identify significant patterns for the qualitative evaluation of the waste during the collection process, not inside the plant, which could improve the time and cost of the transformation process.”

In addition, the Hera team hopes to correlate waste-quality data with collection locations, helping the company develop targeted information campaigns to help people better differentiate between waste items.

Following the agile IBM Garage Methodology, in eight weeks Hera and the IBM Garage team co-created and released a minimum viable product (MVP) that incorporates IBM Watson® Studio and IBM Watson Machine Learning technology to generate a specific tool for the use case, including a machine learning model to recognize the key waste patterns. According to Collina, “The IBM tools allowed us to take thoughts that previously were only written on paper and make them reality in a much faster and more agile process.”

Collina continues: “Now, the most urgent challenge is to understand how this can be industrialized. How can we do a prototype, for example, on a single truck for perhaps a year, with all the variations in lighting and weather, and continue getting the right insight throughout the year.”

Woman throwing plastic trash into recycling bin
App modernization: the circular economy of IT
Monitor with waste sorting plant depiction

Meanwhile, to ensure its application infrastructure could accommodate the waste-sorting AI, Hera applied the circular economy concept to its internal IT. Some years ago, Hera had worked with IBM to develop a custom application called “Beam,” which supports Hera’s gas business by collecting near-real-time data from gas smart-meters. Bonetti, Collina and team saw the potential to recycle Beam’s functionality for other business areas such as environmental services and waste collection, pulling other types of information from a wider array of devices — including video footage from truck-mounted cameras.

First, however, they needed to modernize the app. “Beam still performed its original task very well,” says Bonetti. “But an underlying monolithic architecture constrained the application’s growth and evolution.”

Using IBM Cloud Paks, Hera freed itself from the constraints of the monolith and created Beam IoT, a flexible, open solution that can be repurposed to support use cases across the multi-utility business.

“Our systems evolution strategy rests on three guidelines,” says Bonetti. “Cloud native development, integration architecture, and increasingly refined use of data to create value. Those three guidelines map perfectly to the IBM solutions that Hera used to turn Beam into Beam IoT:

  • IBM WebSphere® Liberty and IBM Transformation Advisor solutions — now available in IBM WebSphere Hybrid Edition — helped Hera convert the monolithic application to a flexible microservice architecture that eases ongoing adaptations and supports cloud-native development.
  • IBM Cloud Paks for Integration introduced new integration tools for automated, API-based integrations that extend Beam’s capabilities beyond the smart-meter use case.
  • IBM Cloud Paks for Data supplies the same IBM Watson capabilities built into the MVP, helping Hera apply AI to automate the organization and analysis of waste data and the generation of insights that inform sorting and recovery.
  • The Red Hat® OpenShift® container platform, which is part of all IBM Cloud Paks, helps Hera run Beam IoT in a fully containerized architecture in a private cloud hosted by a partner.
  • New momentum in the circular economy
    Boxes with Separate collection of waste for recycling

    The work Hera is doing with IBM Garage and the IBM Cloud Paks and WebSphere solutions is not a finite project; it is part of a cycle.

    As Bonetti, Collina, and their colleagues work with the IBM Garage team to learn how to train AI to find recoverable waste, and how to scale such an innovation to the everyday environment, they will not only cultivate new and valuable expertise; they will also identify other ways to put AI to work in the utilities industry.

    The modernization and flexibility Hera has brought to Beam IoT instills greater reliability and resilience in a critical system while opening it up to ongoing adaptation and expansion.

    And most important, because these efforts could drastically improve the cost efficiency of reclaiming waste for other uses, they have the potential to influence an industry, generating greater momentum in the circular economy and allowing the world to reclaim some of its green.

    Hera SpA logo

    About Hera SpA

    HeraExternal Link is a leading multi-utility in Italy, providing energy distribution, energy sales, water cycle management, heating, and waste and recycling services. It operates across the Emilia-Romagna, Veneto and Friuli regions, employing more than 8,000 people and earning more than €6 billion in yearly revenue.

    Solution components
    Hera SpA logo

    About Hera SpA

    HeraExternal Link is a leading multi-utility in Italy, providing energy distribution, energy sales, water cycle management, heating, and waste and recycling services. It operates across the Emilia-Romagna, Veneto and Friuli regions, employing more than 8,000 people and earning more than €6 billion in yearly revenue.

    Solution components