The phenomenon of rural depopulation in Europe affects the eastern regions, the Baltic countries, Germany and the Mediterranean and southern countries. In Spain, more than 4,000 municipalities suffer from this situation, with the particularity that many receive seasonal population during holiday periods, for which Salher studies economic and efficient solutions to meet their wastewater treatment needs.
For decades, rural depopulation in Europe has generated socio-cultural, economic and environmental impacts. One of them is the loss of traditional agricultural, livestock and forestry activities, which are more respectful of nature than intensive industries and generate more jobs. In addition, the gradual disappearance of grazing means that forests are becoming overgrown with weeds that increase the risk of fire.
From the point of view of water treatment, wastewater treatment in small towns generally has an investment cost five times higher than in towns with more than 2,000 inhabitants. Salher has more than forty years of experience in the design and manufacture of very compact, efficient and economical solutions for small communities of up to 50 inhabitants, family homes, rural hotels and campsites, among others.
The issue of seasonal population in rural areas
The demographic variant of summer and holiday periods is a characteristic feature of the population of many Spanish villages, which in some cases multiply their census by 130%. When designing solutions to treat urban wastewater in these places, the issue of seasonality is a priority. Salher recommends installing low-energy equipment that requires practically no maintenance, such as its LBR treatment plant, a reactor by biological filter or trickling filter.
Incinerator for governmental organizations, non-profit organizations, international contractors, logistics organizations, military, pet cremation business owners, etc. including war zone like Iraq, Afghanistan, Somalia, South Sudan.
The IMH-LBR-TC Salher treatment plant include a primary treatment through settling – digestion (Imhoff tank) and a secondary treatment through recirculated biological filter, lower part evacuation system and natural ventilation. Additionally, this treatment plant includes a truncated cone shape secondary settling tank with central feed and Thompson perimeter canal, a sludge extraction system to the digestion chamber of the Imhoff tank consisting of a submersible pump with extraction system through auto-coupling and a recirculation system of part or total of the treated water to increase the system performance.
In addition to their low energy consumption, these type of solutions can be fitted with solar panels, which makes them highly efficient. Salher has experience installing them in environments close to the Esla river, the Tuela river and the Manzanares river, in the Sierra de Zamora) and rural areas of Soria, Castilla la Mancha, Granada and Galicia.
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