Municipal Solid Waste (MSW) generated by cities are sent to landfills for final disposal. According to the ABNT standard, NBR 8419/1992, landfill is a technique for disposing of solid waste on the ground, without causing damage to public health and its safety, minimizing environmental impacts.

This method uses engineering principles to confine solid waste in the smallest possible area and reduce it to the smallest allowable volume, covering it with a layer of dirt at the conclusion of each work. Landfills are fundamental, as they solve part of the problems caused by the excess of waste generated in large cities. And they still have the environmentally responsible way to treat this waste.

The decomposition of MSW in landfills generates leachate as a by-product. Characterized by having a high concentration of organic and nitrogenous matter, this effluent is difficult to treat, that is, with low biodegradability, requiring a robust and efficient treatment system to adjust its quality and release it into the permitted water bodies.

Normally, leachate treatment systems in landfills managed by the public initiative do not meet the quality required by environmental agencies. This is a great opportunity to use the biotechnology solution provided by Millenniun.

Both public and private initiatives, which manage MSW landfills in some cities, make use of this type of solution in their systems composed of activated sludge, which undergo periods of destabilization due to the unique characteristic of this type of effluent. The inoculation of Enzilimp causes an increase in the degradation of the organic fraction, providing a longer useful life to the sanitary landfills. The slurry storage cells from this decomposition will also be places with great potential for using Enzilimp, improving the quality of the treated effluent. In more complete effluent treatment systems, the inoculation of Enzilimp may be recommended to reestablish the biomass, considering the impacts of the high loads that this segment has.

Benefits achieved:

  • Reduction of BOD, COD, oils and greases
  • Ammonia nitrogen reduction in aerobic systems
  • Reduction of bad odors
  • Reduction of supernatant, suspended and sedimented solids
  • Increased treatability capacity of treatment systems