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CHALLENGE TREATMENT OF WASH WATER FROM GRAVEL AND SAND WASHING
Removal of fine particles from the wash water.
We improve the sedimentation rate and dewatering behavior
In order to remove the silt and clay components washed out of the raw material during sand and gravel washing, their sedimentation takes place in large sedimentation tanks, clarifiers or lamella separators with subsequent dewatering.
To reduce water requirements, the washing water produced is treated and recirculated and only process water-related water losses are compensated for by fresh water supplies, for example from wells, quarry ponds or rivers. For this reason, many companies require a water permit.
In process water treatment, polymer flocculants (pFM) ensure improved agglomeration of the fines into larger particles and thus improve sedimentation speed and dewatering behavior.
Our application experts will be happy to advise you on the selection and use of the right product for your challenge.
Regulatory requirements for plant operators when using pFM for the treatment of wash water
Plant operators are, if it is specified by authorities, obliged to take precautions to reliably ensure that the limit values for acrylamide according to national drinking water regulations are not exceeded by wash water seeping into the groundwater in the event that wash water escapes from the process water treatment plant.
This can be achieved either through structural measures or through the use of suitable pFM.
ProduCTS AND SYSTEMS
Efficient solutions to improve the agglomeration of fines:
