WIKA  Alexander Wigand GmbH & Co. KG Klingenberg, Germany
 
 
WIKA  Alexander Wigand GmbH & Co. KG is a manufacturer of high grade measurement equipment for temperature and pressure. In the WIKA headquarters in Klingenberg, Germany EnviroChemie installed a WWTP for the waste water from:

•  degreasing baths (acetic app. 2%,  alkaline app. 3% of total WW)
• soldering waters (app. 90% of total WW)
• the high heavy metal polluted waste waters from thin-film cauterisation (app.  5% of total WW).

The different waste waters are collected separately and pumped in defined volumes to the two Envochem® reactors. Here pH is adjusted and different precipitation agents are added. The precipitated sludge is dewatered  by the use of a filter press and is disposed. After passing the  final filter the clear liquid phase is transferred to the municipal waste water plant.

Commissioning:	1999
Achieved limits:
Chrome:	< 0,5 mg/l
Copper:	< 0,5 mg/l
Nickel:	< 0,5 mg/l
Silver:	< 0,1 mg/l
Tin:	< 2 mg/l
Zink:	< 2 mg/l
Batch volume:	ca. 15 m³
	ca. 8 h / batch
	2 batches / d

Mr Stephan Petersen
stephan.petersen(at)envirochemie.com
phone: +49 (0) 61 54 / 69 98 - 298