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Water cleaning at Holmen's paper mills
Автор: Holmen Board and Paper
Загружено: 2023-01-16
Просмотров: 932
Описание:
The water that is released from the mills is purified in a three stage process - mechanical, biological and chemical purification.
In the mechanical purification, or pre-sedimentation, larger particles are removed. The process water is then passed on to the biological purification and a heavily oxygenated selector basin, a kind of nursery for the bacteria that will break down the pollutants.
When needed, a third chemical purification step is used, where flocculation chemicals are added to remove remaining COD, dissolved phosphate or organic material that was not removed in the biological treatment.
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![Screening for Pulp Paper Mill Machine Equipment [NEW]](https://imager.clipsaver.ru/5iTpGOkVPJg/max.jpg)
