IT1244625B - Procedimento ed impianto per la depurazione di fanghi biologici - Google Patents

Procedimento ed impianto per la depurazione di fanghi biologici

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Publication number
IT1244625B
IT1244625B ITTO910025A ITTO910025A IT1244625B IT 1244625 B IT1244625 B IT 1244625B IT TO910025 A ITTO910025 A IT TO910025A IT TO910025 A ITTO910025 A IT TO910025A IT 1244625 B IT1244625 B IT 1244625B
Authority
IT
Italy
Prior art keywords
chemical
sludges
heavy metal
sewerage
metal salts
Prior art date
Application number
ITTO910025A
Other languages
English (en)
Inventor
Roberto Pellegrin
Paolo Peri
Original Assignee
Romfin Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Romfin Srl filed Critical Romfin Srl
Priority to ITTO910025A priority Critical patent/IT1244625B/it
Publication of ITTO910025A0 publication Critical patent/ITTO910025A0/it
Publication of ITTO910025A1 publication Critical patent/ITTO910025A1/it
Application granted granted Critical
Publication of IT1244625B publication Critical patent/IT1244625B/it

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  • Treatment Of Sludge (AREA)

Abstract

Nei procedimenti di depurazione aerobica di liquami civili o industriali si ottiene un eccesso di fanghi biologici dove si concentra la massima parte dei sali di metalli pesanti tossici contenuti nei liquami. Lo stesso dicasi per i fanghi di risulta da trattamenti anaerobici dei suddetti. Entrambi i tipi di fango vengono sottoposti ad un trattamento termico-chimico che provoca il distacco dei sali dei metalli pesanti legati alle cellule vive e loro rilascio nell'acqua di supero dalla quale possono venir separati come sali insolubili tramite un trattamento chimico-fisico. Il solido restante viene inertizzato con calce, cemento e leganti chimici in modo da non dare più reazioni di copertura e per discariche di rifiuti solidi urbani.
ITTO910025A 1991-01-17 1991-01-17 Procedimento ed impianto per la depurazione di fanghi biologici IT1244625B (it)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ITTO910025A IT1244625B (it) 1991-01-17 1991-01-17 Procedimento ed impianto per la depurazione di fanghi biologici

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO910025A IT1244625B (it) 1991-01-17 1991-01-17 Procedimento ed impianto per la depurazione di fanghi biologici

Publications (3)

Publication Number Publication Date
ITTO910025A0 ITTO910025A0 (it) 1991-01-17
ITTO910025A1 ITTO910025A1 (it) 1992-07-17
IT1244625B true IT1244625B (it) 1994-08-08

Family

ID=11408790

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO910025A IT1244625B (it) 1991-01-17 1991-01-17 Procedimento ed impianto per la depurazione di fanghi biologici

Country Status (1)

Country Link
IT (1) IT1244625B (it)

Also Published As

Publication number Publication date
ITTO910025A1 (it) 1992-07-17
ITTO910025A0 (it) 1991-01-17

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19931231