Carbon neutral target with anaerobic waste anaerobic biodigesters

March 18, 2020

(Reading 3 mins)

On World Water Day, Sigma Group reiterates its commitment to minimize its carbon footprint and its contribution to the environment and sustainability.

Our SiGMADAF and SiGMAMBR allow industries of the most varied sectors to implement solutions for the treatment of wastewater generated in the development of their productive activities and their own personnel, to such an extent that it can later be reused for other purposes.

Aware that our activity - on the one hand - benefits the sustainability of water resources, but - on the other hand - uses large amounts of energy to carry it out, we are currently developing several projects for waste biodigester plants.

These biogas plants will contribute to minimizing our carbon footprint to zero, which is our strongest commitment to the environment.

Carbon Neutral Objective

Our goal is to generate as many kilowatts (kW) from renewable sources as are consumed by all the DAF and MBR equipment installed by us, with the aim of reaching carbon neutrality in our company's carbon footprint by 2022.

Carbon neutrality is achieved when we emit the same amount of carbon dioxide (CO2) into the atmosphere as we have removed per activity from each of the equipment we have installed, leaving a zero balance, also called a zero carbon footprint.

From SIGMA Group: Aguasigma and SIGMADAF we want to contribute to the commitment of the European Union to move towards carbon neutrality in the second half of the 21st century, assumed in the framework of the United Nations Climate Change Conference held in Paris in 2015.

How will we achieve this? By developing waste biodigestion plants that generate as much energy as is consumed by the DAF and MBR equipment in place.

How a biodigestion plant - biogas works

Biodigestion, also known as anaerobic digestion, is a biological process that occurs when organic matter decomposes in bacteria in the absence of oxygen, releasing methane gas or biogas.

This biogas is captured to produce electricity.

The organic matter that can be used for biogas production can be of plant or animal origin such as manure.

To capture the biogas released from the decomposing organic matter, this biological process must take place in a biological reactor. That is, in a hermetically sealed and impermeable container.

This is where the SIGMA Group, through its companies, intervenes. In the development, manufacture, implementation and commissioning of organic waste biodigestion plants for the use of biogas in the production of energy.

Benefits of using industrial biodigesters

The implementation of anaerobic biodigesters in industrial companies allows:

  • Contribute to improving the company's carbon footprint.
  • Circular environmental objective (energy, water, waste).
  • Reduce operating costs, translated into energy and sludge generation savings.
  • Sustainable economy, interaction with local stakeholders in the primary sector.

Biodigestion plant in a frozen vegetable industry

General aerial view of the frozen vegetable industry with the anaerobic biodigester.
General aerial view of the frozen vegetable industry with the anaerobic biodigester.

SIGMA GROUP designed and installed a wastewater treatment plant at a large frozen vegetable production plant.

The biggest challenges facing the client, in addition to achieving water quality with potential for reuse in agricultural irrigation, were the control of operating costs and the environmental impact of the operation of the treatment plant itself.

To solve these constraints, SIGMA GROUP designed a process that combines SIGMADAF flotation technologies, aerobic water treatment and anaerobic biodigestion of water and waste.

One of the major peculiarities of this facility is that it does not operate suspended solids separation pretreatments.

The entire water load generated and discharged is treated directly in the anaerobic biodigester, increasing biogas generation, eliminating the use of chemicals in pre-treatment and reducing the production of sewage sludge.

To achieve our goal, we need companies that want to be as committed to the environment and minimize the footprint of their activities as we are.

If you want your company to develop a waste biodigestion plant, write to us! We will assess the feasibility of your project without any commitment.