Skip to main content
Vai all'homepage della Commissione europea (si apre in una nuova finestra)
italiano it
CORDIS - Risultati della ricerca dell’UE
CORDIS
Contenuto archiviato il 2023-01-02

EXTRACTION AND WASHING OF CONTAMINATED SOILS AND TREATMENT OF CONTAMINATED WATER BY PRECIPITATED OXIDATION

Obiettivo

The objective of the project is to demonstrate, on an industrial scale and at three different contaminated sites, the viability of the wet oxidation technology that was developed by IDE ENVIRONNEMENT. This technology consists of low-pressure, low-temperature wet oxidation of organics with the help of hydrogen peroxide. Laboratory tests have shown that this technology will be capable of digesting organics not only to the acetic acid stage but down to carbon dioxide.
For the incineration of low concentrated solutions of hydrocarbons in water, containing other atoms, such as halogens or phosphorus, wet oxidation has been tried. Despite rises in temperature and pressure, and despite efforts to raise the oxygenizing potential by adding, for instance, ozone, some compounds withstood the attack of oxygen, heat and pressure. Process technology using hydrogen peroxide has been developed. A mobile demonstration unit was constructed and operated at oil polluted sites near Madrid and near Barcelona. In both cases, groundwater was polluted by the soil contamination. The groundwater was extracted from wells, cleaned up in the mobile plant, and returned to the ground.

It was demonstrated that the process is capable of destroying virtually all hydrocarbons including those containing halogens and phosphorus, converting the acetic acid which is easily biodegradable, carbon dioxide, and other basic and low atomic compounds; the rate of destruction can be raised to above 99%. The process requires only 120 C and 3 bars pressure, compared with the original wet oxidation process that requires above 200 C and above 10 bars pressure. Thus, process economy is favourable for water polluted with organic contaminants, preferentially not biodegradable, in the range up to 20 000 mg/l chemical oxygen demand (COD), incineration being recommended at higher concentrations; the treated effluent, being detoxified and odourless, may have to undergo after treatment in a conventional biological sewage treatment plant.

The process promises to become a standard in the treatment of chemically difficult organics loaded waste water.
For the incineration of low-concentrated solutions of hydrocarbons in water, containing other atoms, such as halogens, phosphorus, etc., or not, wet oxidation has been tried by several researchers. Despite rises in temperature and pressure, and despite efforts to raise the oxygenizing potential by adding, for instance, ozone, some compounds withstood the attack of oxygen, heat and pressure. Within its ACE 89 programme on clean technology demonstration projects, the Commission of the European Communities has assisted a team consisting of the Barcelona-based INSTITUT CERDA (project manager), the Toulouse-based IDE ENVIRONNEMENT and the Spanish companies EMGRISA and SERENSA to develop the process technology using hydrogen peroxide from lab to demonstration scale. The project was successfully performed in the period of March, 1991, through May, 1993.

A mobile demonstration unit was constructed and operated at oil-polluted sites near Madrid and near Barcelona. In both cases, groundwater was polluted by the soil contamination. The groundwater was extracted from wells, cleaned up in the mobile plant, and returned to the ground.

It could be demonstrated that the process is capable of destroying virtually all hydrocarbons including those containing halogens and phosphorus, to acetic acid which is easily biodegradable, carbon dioxide, and other basic and low-atomic compounds; the rate of destruction can be raised to above 99 %. This being already a very good result, the process recommends itself by requiring only 120 oC and 3 bars pressure, as compared with the original wet oxidation process that requires above 200 C and above 10 bars pressure.

Thus, process economy is favourable for water polluted with organic contaminants, preferentially not biodegradable, in the range up to 20.000 mg/l COD, incineration being recommended at higher concentrations; the treated effluent, being detoxified and odourless, may have to undergo after-treatment in a conventional biological sewage treatment plant.

The process bears promise to become a standard in the treatment of chemically difficult organics-loaded waste water.

Campo scientifico (EuroSciVoc)

CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP. Cfr.: Il Vocabolario Scientifico Europeo.

Questo progetto non è ancora stato classificato con EuroSciVoc.
Suggerisci i campi scientifici che ritieni più rilevanti e aiutaci a migliorare il nostro servizio di classificazione.

È necessario effettuare l’accesso o registrarsi per utilizzare questa funzione

Programma(i)

Programmi di finanziamento pluriennali che definiscono le priorità dell’UE in materia di ricerca e innovazione.

Argomento(i)

Gli inviti a presentare proposte sono suddivisi per argomenti. Un argomento definisce un’area o un tema specifico per il quale i candidati possono presentare proposte. La descrizione di un argomento comprende il suo ambito specifico e l’impatto previsto del progetto finanziato.

Dati non disponibili

Invito a presentare proposte

Procedura per invitare i candidati a presentare proposte di progetti, con l’obiettivo di ricevere finanziamenti dall’UE.

Dati non disponibili

Meccanismo di finanziamento

Meccanismo di finanziamento (o «Tipo di azione») all’interno di un programma con caratteristiche comuni. Specifica: l’ambito di ciò che viene finanziato; il tasso di rimborso; i criteri di valutazione specifici per qualificarsi per il finanziamento; l’uso di forme semplificate di costi come gli importi forfettari.

DEM - Demonstration contracts

Coordinatore

Institut CERDA
Contributo UE
Nessun dato
Indirizzo
185,Numancia
08034 Barcelona
Spagna

Mostra sulla mappa

Costo totale

I costi totali sostenuti dall’organizzazione per partecipare al progetto, compresi i costi diretti e indiretti. Questo importo è un sottoinsieme del bilancio complessivo del progetto.

Nessun dato

Partecipanti (3)

Il mio fascicolo 0 0