As substances that are harmful both to human health and the environment, heavy metals must be removed from wastewater, e.g. by heavy-metal precipitation. The Wastewater Ordinance with its annexes and the municipal drainage statutes with their discharge conditions specify the limit values to be complied with.
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Which wastewaters require heavy-metal precipitation in industrial wastewater treatment?
- rinse water and washwater from pickling processes in metal surface treatment
- active baths from pickling processes in metal surface treatment
- rinse water and washwater containing metal salts
- rinse water und washwater from cleaning metal surfaces
- rinse water and washwater from pre-treatment processes in powder coating
- rinse water and washwater from galvanic processes/wastewater from electroplating processes
- active baths from galvanic processes
- rinse water and washwater from phosphating processes
- active baths from phosphating processes
- emulsion breaking of cooling lubricant emulsions
