Physico-chemical treatment applied to compost liquor: feasibility study

Abstract : Compost liquor was treated using a combination of physico-chemical processes: (i) lime precipitation, (ii) filtration on a rotary drum vacuum precoat filter, (iii) ultrafiltration, and (iv) reverse osmosis. Laboratory Jar tests showed the interest of using lime to precipitate compost liquor. Yields of ammonium removal up to 90% were obtained for an optimum lime concentration of 6 g/ L. A test was run at semi-industrial scale on 400 L of highly loaded compost liquor (COD: 15,800 mg/L, ammoniacal pollution: 18,433 mg NH4+-N/L, conductivity: 74,000 μS/cm) to demonstrate the potential of the treatment process proposed. Outstanding purification yields were obtained, especially 95% of COD removal and 93% of ammoniacal pollution removal.
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Journal of Industrial and Engineering Chemistry, Elsevier, 2012, 18 (4), pp.1522-1528. 〈10.1016/j.jiec.2012.02.016〉
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Soumis le : mardi 27 mai 2014 - 16:31:18
Dernière modification le : jeudi 18 janvier 2018 - 01:51:51

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Jérémy Gagnaire, Laurent Chapon, Philippe Moulin, Benoît Marrot. Physico-chemical treatment applied to compost liquor: feasibility study. Journal of Industrial and Engineering Chemistry, Elsevier, 2012, 18 (4), pp.1522-1528. 〈10.1016/j.jiec.2012.02.016〉. 〈hal-00997209〉

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