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Solutions for Alteo in Gardanne - PearL<br /> <b>Notice</b>: Undefined index: post in <b>/home/pearlsas/www/wp-content/themes/wazimir/header.php</b> on line <b>38</b><br />

News from PearL

Solutions for Alteo in Gardanne


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Seven months after achieving highly conclusive laboratory trials in the treatment of effluents resulting from red mud, through which PearL attained values lower than those imposed to Alteo for 2021 in regard to heavy metals, the efficiency of Biosorb® is still to be proven with a mobile laboratory located on site, as initially considered.

The authorized values for water discharged into the sea for Alteo in Gardanne, by way of derogation as no viable solutions were offered, currently are of 1226 mg/l for aluminum, in order to reach a value lower than 5 mg/l, and of 1,7 mg/l (i.e 4 T/annum…) for arsenic, in order to reach a value lower than 0,05 mg/l.

 


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Recommendations and PearL test for Alteo


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From its first contact with Alteo in the beginning of 2016, and in order to introduce its new solution, Biosorb®, as a means of finishing treatment to ensure that the values may be observed, PearL suggested to Alteo, unlike what they were suggested up until then, to use a pre-treatment based on carbon dioxide injections, prior to the introduction of Biosorb® as a finishing treatment.


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The first laboratory trials performed in the PearL facility have thus proven to Alteo the benefits and the results of such a primary treatment (CO2 injections) to significantly reduce pollution. This before even using Biosorb® which would allow to attain the future values to be reached for aluminum (less than 2,5 mg/l achieved in laboratory), and especially for arsenic with a final value lower than 0,05 mg/l.


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The other advantages of Biosorb® mats


the adsorption of other heavy metals present in the effluent and its use as a security buffer before discharge in nature, if any pollution variations should occur upstream.

 

Alteo has thus initiated, on their side, pilot tests for the pre-treatment suggested by PearL, however in the end of September 2016, PearL is still waiting for a green light from Alteo to test the efficiency of Biosorb® with its mobile laboratory.

 

 

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