Raw Materials and Wastes for Carpet Mill Processes

Table 7: Carpet Mill Basis: 1 tonne of carpet
PROCESS INPUTS WASTES
  Raw materials Water Energy Liquid Solid Gas
Tufting
Synthetic yarn N.A.        
Dye or print
Dye, Auxiliaries See Tables 9,10 See Table 8 (1) Steam 17.7 GJ [23](2) Highly Variable (1)   VOC See Table 9
Dry
    N.A. N.A. (1)   Vapours Particulate
Finishing
Finishing Agent (3) N.A.(1)(3) N.A. N.A. (1) N.A. Vapour

(1) See Tables 7.1 and 7.2 for global values for water used and waste loads in a carpet mill.

(2) Energy required for dyeing.

Table 7.1: Amounts of Water Typically used in Carpeting Mills [10] Units: m3/t of wool fabric
Minimum Median Maximum
8.3 46.7 162.6

Table 7.1: Characteristics of Carpet Finishing Mill Effluents and Amounts of Waste Load Generated (median values) [10]
Units BOD COD TSS O&G Phenol Cr Sulphide
mg/l 300 1000 120 - 0.13 0.13 0.14
Kg/t 25.6 2.3 4.7 1.1 11.3 3.4 9.4