Suez filter

The success of the SUEZ Advanced Biofilter installed in the Las Dehesas Biomethanization plant

2 years ago SUEZ installed the Advanced High Performance Biofilter for the deodorization of the Las Dehesas Biomethanization plant, in the Valdemingómez Technology Park, demonstrating since then all the advantages it entails.

The Madrid City Council selected the Advanced Biofiltration technology for the treatment of odor emissions from the Las Dehesas Biomethanation plant that receives the selectively collected organic matter produced in the city of Madrid and which, through pretreatment, leads it to an anaerobic digestion process to produce biogas and digestate. During these phases, the production of odors in the different buildings causes an impact on the environment. Until now, the treatment used to mitigate these odors was conventional biofiltration (introducing air through organic matter for its degradation), but over time the limitations of this type of installation and the need to incorporate a system with greater efficiency and robustness, such as the Advanced or High Performance Biofilter, with a two-phase biomedia (inorganic and organic).

According to Maria Paula Marozzi, Environmental Engineer, Las Dehesas Biomethanation Plant of FCC Medio Ambiente, “Suez's participation in this project has been fundamental in providing the advanced biofiltration technology that allows 161.000 m3 of air to be purified per hour.” She tells us that the technology presented by SUEZ has presented significant advantages over traditional organic biofilters since its maintenance is very simple, the consumption of chemical products is practically very low, and the operating costs are also very low. She continues by saying that “this biofilter has high purification efficiency, which allows the company to comfortably comply with the AAI principles.”

At the Las Dehesas Biomethanization plant, a flow rate of 161.000 Nm3/h of air is treated through a 3-story high Advanced Biofilter. As it is a closed biofilter, high-rise construction is possible when there is not enough space. This air, loaded with odors and volatile organic compounds, after passing through the advanced biomedium, is emitted through a chimney with an odor concentration of ≤1.000 OUEU/Nm3 and a TOC (Total Organic Carbon) ≤40 mg/Nm3, both parameters required in the Environmental Authorization of the plant by the Community of Madrid.

A unique and relevant project in the City of Madrid that joins the long list of facilities that already treat their odor emissions with SUEZ's high-efficiency Advanced Biofilters. At the moment @SUEZ Using this system, it is deodorizing around 3 million Nm3/h of air with a guaranteed odor reduction efficiency of >95%. Due to the inoculation of specific microorganisms with the capacity to purify, at the same time, nitrogenous, sulfur compounds and VOCs, this system is capable of purifying the air, also guaranteeing very low final odor concentrations, lower than what is established by regulations and legislation. valid both nationally and internationally. It can be considered the Best Available Technology (BAT) for the elimination of odors and VOCs from treatment plants, MSW treatment plants, composting and biodigestion plants, among others.

@SUEZ will be on October 1 and 2 at the 4thRENEWABLE GAS EXHIBITION