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Designing a wide range of different biological or physic-chemical treatments for tanneries and other industrial sectors. The goal of wastewater treatment is the removal of pollutants from the water in order to decrease the possibility of detrimental impacts on humans and the rest of the ecosystem. Different manuals of clean technologies at regional, national and European level were developed, specially contributing in the IPPC document of best available techniques for the tanning sector.
AIICA develops a system of waste water treatment, as main or complementary step to abate several pollutant indexes in the out coming water stream, as well organic persistent pollutant and the elimination.
The biological aerobic procedures can be applied using an inert substance in a fluidised or fixed bed, depending on the particular characteristics of the effluents. Anaerobic treatments were designed too, as it can be necessary depending on the organic charge level of the residual effluents. Some designs need to apply previous physic-chemical treatments before the biological applications
In the physic-chemical point of view, different kind of technologies were developed, starting with the typical coagulation-flocculation treatments. Simplest precipitation methodologies can be useful in some experimentation. Other oxidative treatments, like Phenton or Photo-Phenton oxidation, were used to convert some organic pollutants (phenols, alcohols, benzenes) into harmless products, CO2 and H2O. The electro coagulation can be applied to almost all kinds of wastewaters, but it is especially suitable in reduced volumes. It requires an investment much lower than traditional systems. The treatment is instantaneous and does not require addition of chemicals (except common salt in some cases), no civil works of infrastructure are required, and the capacity of the equipment can be increased in a modular way. The multiple-pollutant abatement can allow in some cases the recycling of the treated water.
AIICA propose systems of the adsorption like the activated carbon or other mineral products (zeolites) with the same properties were proposed to purify liquid or gaseous emissions, like solvents.
Another line extensively investigated by the centre is the re-use of the wastewater obtained from different industrial sectors. This way of purify residual effluents supposes an important decreases into the water consumption. After the biological treatment, a series of different filtration systems were designed from the big particle size till the reverse osmosis systems, in order to obtain a final effluent (permeate) with higher technical quality than the water supply. The permeate can be re-used into the industrial process, avoiding the water supply consumption.
The segregation of determinate residual effluents is used to concentrate a determinate component to avoid the use of new raw materials, using membranes technology.
The principal innovations that this technology presents are:
The advantages of the technology with regard to the existing systems on the market are:
The process can be applied to a wide range of industries requiring wastewater treatment:
AIICA offers Pilot Plant to carry out different trials with the company’s effluent and providing also the necessary equipment with the collaboration of a specific supplier.
