Global patent index - EP 0991596 A1

EP 0991596 A1 2000-04-12 - A PROCESS AND A PLANT FOR TREATMENT OF LANDFILL LEACHATES

Title (en)

A PROCESS AND A PLANT FOR TREATMENT OF LANDFILL LEACHATES

Title (de)

PROZESS UND ANLAGE ZUR BEHANDLUNG VON DEPONIESICKERWÄSSERN

Title (fr)

PROCEDE ET INSTALLATION PERMETTANT DE TRAITER LES LIXIVIATS DE DECHARGES

Publication

EP 0991596 A1 (EN)

Application

EP 97928426 A

Priority

IT 9700137 W

Abstract (en)

[origin: WO9857898A1] Leachates from sanitary landfills and waste water liquid in general are depurated and converted into clear water (19), ammonium sulphate (24) and polluted mud by gradually heating the liquid, raising its pH (5) to precipitate heavy metals (6), stripping ammonia (7), lowering the pH by treatment with CaCl2 (8), neutralising and precipitating further metals and impurities (14), and evaporating (17; 18; 15; 27) the water into steam that is condensed while gradually heating the incoming liquid.

IPC 1-7 (main, further and additional classification)

C02F 9/00; B01D 29/35; C02F 1/04; C02F 1/62; C02F 1/66

IPC 8 full level (invention and additional information)

B01D 1/28 (2006.01); C02F 1/04 (2006.01); C02F 1/58 (2006.01); C02F 1/66 (2006.01)

CPC (invention and additional information)

B01D 1/2846 (2013.01); C02F 1/048 (2013.01); C02F 1/586 (2013.01); C02F 1/66 (2013.01); C02F 2103/06 (2013.01)

Citation (search report)

See references of WO 9857898A1

Designated contracting state (EPC)

CH DE ES FR GB IT LI

EPO simple patent family

WO 9857898 A1 19981223; EP 0991596 A1 20000412

INPADOC legal status

2001-06-27 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20001231

2000-09-13 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20000727

2000-05-31 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000113

2000-04-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): CH DE ES FR GB IT LI