Civil and Industrial Waste Water Purification
The Civil and Industrial Waste Water Purification treatment process purifies water used during production activities, making it compliant with environmental standards.
Industrial waste water treatment: safety for health and the environment
Waste water from industrial plants is characterised by the presence of chemicals and micropollutants, which can pose a threat to both human health and the environment. To manage this waste, it is essential to subject it to specific treatments in order to eliminate excess components and ensure that the purity levels prescribed by current legislation (Legislative Decree 152/06) are reached.
Biological Treatments
for Waste Water
Our approach to the purification of civil and industrial wastewater is based on the efficient removal of organic pollutants through the action of aerobic bacterial strains. These bacteria, in the presence of oxygen, degrade organic compounds, producing water, carbon dioxide and mineral salts.
During the design phase, our technical team selects the most suitable
technology based on the characteristics of the wastewater, the objectives to be achieved and the customer's needs.
The main technologies applied include:
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Conventional Active Sludge (CAS)
This method involves the continuous treatment of sewage, with a final sedimentation phase. The preference for piston technology (Plug Flow) enables the effective handling of sewage with a high pollutant load.
Advantages:
High efficiency in the removal of organic pollutants, with a system that is well suited to constant flows of industrial effluent.
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Ultrafiltration Membranes (MBR)
This system replaces the traditional final sedimentation phase with the use of ultrafiltration membranes. The quality of the purified water is so high that it can be reused directly in the company.
Advantages:
High efficiency in removing particles and contaminants, ensuring a quality treated water resource.
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Sequential Reactor (SBR):
Ideal for sewage with a high pollutant load and relatively low flow rates, the sequential reactor integrates all treatment steps in a single unit. The flexibility of this system enables efficient use of space.
Advantages:
Optimisation of aeration, sedimentation and clarification stages in one reactor, reducing environmental impact and land occupation.
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Moving Bed Reactors (MBBR)
MBBR reactors use plastic filling bodies to provide a large contact surface area for the growth of bacterial flora. These reactors can be used either as pre-treatment or as a complete purification process.
Advantages:
They allow the development of selected bacterial strains, adapted to the specific working conditions of each reactor. The use of small filling bodies optimises treatment efficiency.
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Percolating Filters
Although an outdated technology, percolating filters are still effective in reducing the organic load in heavily laden sewage. This process simplifies subsequent biological treatment, improving the overall quality of the purified water.
Advantages: Significant reduction of the organic load, facilitating subsequent treatment steps and contributing to the sustainability of the process.
Chemical-Physical Treatments
for Waste Water
Our approach is based on a precise assessment of customer needs, enabling the design of customised solutions to maximise the effectiveness of chemical and physical treatments.
We are committed to offering state-of-the-art technologies to successfully address the challenges of non-organic wastewater management, ensuring the highest quality.
Our chemical-physical treatments offer an advanced solution for handling pollutants in non-organic wastewater. We aim to precisely separate suspended materials, colloids and dissolved substances through the targeted use of chemical reagents, often accompanied by a change in pH.
This process culminates in the formation of sludge, which is subsequently removed. We do not limit the application of these treatments to separation alone, but extend them to pre-treatment, effectively reducing the pollutant load prior to biological processes.
The dosing of coagulants and flocculants is common, essential to facilitate the separation of sludge from solution. To refine and sometimes replace main treatments, we use advanced mechanical filtration systems based on materials such as quartzite and activated carbon, ensuring complete purification of the effluent.
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Coagulation-Flocculation Implants
These plants dose coagulants (usually metal salts) and flocculants to promote the formation of larger agglomerates that can be easily separated from the solution.
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pH Neutralisation Plants
Used to adjust the pH of waste water, often by adding alkaline or acidic substances. This process is crucial to ensure that subsequent treatment steps are effective.
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Chemical Precipitation Plants
They rely on the formation of insoluble precipitates to remove specific pollutants, such as heavy metals, from the solution. This process may require the addition of specific reagents.
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Flotation plants:
They use air bubbles or other agents to separate light materials from the water surface. This is particularly effective for removing oils, grease and floating particles.
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Mechanical Filtration Plants
They use filters with materials such as quartzite, activated carbon or membranes to trap suspended particles, colloids and other undesirable substances in wastewater.
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Adsorption Plants
They use adsorbent materials, such as activated carbon, to attract and retain organic pollutants and other substances from the solution.
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Advanced Oxidation Plants
They use oxidation processes to convert organic compounds and pollutants into less harmful forms. Ozone, hydrogen peroxide and other oxidants can be used.
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Ion Exchange Plants
They replace unwanted ions in the solution with more favourable ones, helping to remove heavy metals and other ionic pollutants.
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