Portal de Lorca
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This system reduces ammoniacal nitrogen to 95%, 96% for nitrates, 86% for total nitrogen and 91% for total phosphorus.
The following steps are directed to the development of a photoreactor with solid supports, with the objective of being able to implant it in a small EDAR and to continue with the studies in larger scale
The Councilor for Water in the City of Lorca, Angel Mecca, Within the continuous improvement and aware of the need to be more efficient and respectful of the environment in all its activities, Aguas de Lorca, has developed several actions aimed at improving and Increase the efficiency of the processes in the Wastewater Treatment Plant located in La Hoya.
One of the actions being carried out, namely the cultivation of microalgae for the purification of water, is achieving international repercussion, as it has been set as an example at the XII edition of the International Conference on Renewable Resources and Bio-refineries ( Biofuels) RRB-12, held in Ghent, Belgium.
Aguas de Lorca began the cultivation of Chlorella in the wastewater treatment plant of La Hoya, confirming the effectiveness of these microalgae for the elimination of nutrients.
The results show high elimination rates for all the evaluated parameters, with the added value that it does not generate sludge, nor bad odors and, in addition, produces oxygen, reason why the microalgae can be considered as an alternative for the treatment of residual waters In small populations or as a post-treatment in facilities where the discharge limits are not met.
From Aguas de Lorca is working on the cultivation of microalgae on solid supports as something new in order to increase growth rates and facilitate the final separation of algae.
The produced algae would be reused to feed the digesters and improve the quality and quantity of the biogas produced, biogas that would be used to produce energy and to be able to advance towards the energy sustainability of the WWTP itself.
The following steps are aimed at the development of a photoreactor with solid supports, with the aim of being able to implant it in a small EDAR and to continue the studies on a larger scale.
Fruit of this innovative spirit is the recognition obtained by Aguas de Lorca at the XII International Conference on Renewable Resources held in Ghent.
Aguas de Lorca SA participated in the conference announcing the cultivation of microalgae in wastewater (Microalgaecultivation in wastewater), highlighting part of the work being developed by Aguas de Lorca in the La Hoya WWTP related to the cultivation of applied microalgae To wastewater treatment.
In recent years Lorca has been developing several actions aimed at increasing the efficiency of processes and reducing the environmental impact of its activities, including microalgae wastewater treatment studies.
Microalgae are photoautótrophic organisms that obtain energy from sunlight and inorganic matter.
However, some species are able to grow using organic matter as a source of carbon and energy.
The Chlorella species is one of the important because of its rapid growth and its ability to remove nutrients from water.
Algae culture is being studied intensively due to its potential for:
Reduce emissions of greenhouse gases (removal of carbon dioxide from industrial gas streams).
Generate products with high added value (dyes, feedingstuffs, fertilizers).
Eliminate nutrients.
Be an alternative to traditional fossil fuels (biodiesel, biomethane, biohydrogen and bioethanol).
Aguas de Lorca began the cultivation of Chlorella in waste water from the La Hoya WWTP, confirming the effectiveness of these microalgae for the elimination of nutrients.
The results show high elimination rates for all parameters evaluated, reaching values ​​of 95% for ammoniacal nitrogen (N-NH4), 96% for nitrates (N-NO3), 86% for total nitrogen (NT) and 91% for total phosphorus (PT).
Microalgae can be considered as an alternative for the treatment of wastewater in small populations or as a post-treatment in installations where the discharge limits are not met.
Persisting in this line continues to work on the cultivation of microalgae on solid supports in order to increase growth rates and facilitate the final separation of algae.
As well as being able to use the mass of algae produced to feed the digesters and improve the quality and quantity of biogas produced and be able to move towards the energy sustainability of the WWTP itself.
Source: Ayuntamiento de Lorca
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