EP 0079987 B1 19860226 - METHOD AND APPARATUS FOR RECYCLING WASHING LIQUID AND HEAT CONTAINED IN WASHINGS DISCHARGED FROM METAL SURFACING PROCESS
Title (en)
METHOD AND APPARATUS FOR RECYCLING WASHING LIQUID AND HEAT CONTAINED IN WASHINGS DISCHARGED FROM METAL SURFACING PROCESS
Publication
Application
Priority
EP 81305502 A 19811120
Abstract (en)
[origin: EP0079987A1] A system for recovery and recycling of a washing liquid and heat contained in the washings discharged from the metal surface treatment process comprises a hot water washing tank (1) with an associated cushion tank (5), a water washing tank (16) with an associated cushion tank (18), a heat exchanger (13), an ion exchanger (14) and a filter (18). The second-mentioned cushion tank (18) is in communication with the hot water washing tank through the heat axchanger, while the first-mentioned cushion tank (5) is in communication with the water washing tank through the filter, the heat exchanger and the ion exchanger.
IPC 1-7
IPC 8 full level
C23G 1/00 (2006.01); C25D 21/22 (2006.01)
CPC (source: EP)
C23G 1/00 (2013.01); C25D 21/22 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0079987 A1 19830601; EP 0079987 B1 19860226; DE 3173910 D1 19860403
DOCDB simple family (application)
EP 81305502 A 19811120; DE 3173910 T 19811120