Guidelines for reduction of dyes released from pulp and paper mills 2013: appendix 2


Appendix 2: Calculation of Solids Removal Efficiency by the Primary Treatment System

equation: ESS equals 1 minus SSo divided by SSi times 100%

Where

ESS = solids removal efficiency (%)
SSo = solids concentration at the outlet of the primary treatment system (mg/L)
SSI = solids concentration at the inlet of the primary treatment system (mg/L)

Note: The sampling should be conducted while the primary treatment system is stable and the mill is in operation.

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