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Short Note on Save all from Pulp & Paper industry.
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  • The function of a save all is to remove fiber fines and other solids from white water.

  • The clarified white water can then be used for showers, for stock dilution, and for make down of certain types of chemical product.

  • Also it can be stored with a much-reduced chance of materials becoming settled as deposits. Clarified white water from save all also may be discharged to waste water treatment, minimizing the loss of solids from the process.

  • The most widely used types of save alls use disk screens or drum screens. Some long long fiber or broke usually is added to aid in the filtration of fines.

  • Dissolved air floatation equipment is also used for floatation save alls in many mills.

  • Such processes are designed so that fiber fines and other solids rise to the top of a shallow chest where they can be skimmed off and recovered.

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