Process pH BOD TS Scouring 9-10.4 30,000-40,000 1,129-64,448 Dyeing 4.8-8 380-3,000 2,000-10,000 Washing 7.3-10.3 4,000-11,455 4,830-19,267 Neutralising 1.9-9 28 1,241-4,830 Bleaching 6 390 908

Table 29: Pollution load from the processing of wool [122].