Raw Materials and Wastes for Knit Fabric Finishing Mill Processes

**Table 5: Knit Fabric Finishing Basis: 1 tonne of knit fabric**
PROCESS	INPUTS			WASTES
	Raw materials	Water	Energy	Liquid	Solid	Gas
Washing	Knit Greige Goods Detergents	N.A. (10)	(2)	N.A (1)
Dyeing	Dyes, auxiliaries See Tables 9,10	See Table 8 (1)	42.7 GJ [22] (2)(3)	Highly variable (1)		Vapours
Kier scour & bleaching	Scour Agents Bleach Agents	N.A. (1)	(2)		N.A. (1)
Drying		(2)			Vapours Particulate
Printing	See Tables 9,10,11	N.A. (1)	(2)	N.A. (1)		VOC See Table 9
Wet pad finishing bath	Finishing Agent	N.A. (1)	(2)			Vapours Particulate
Dry finishing	N.A.		(2)			Vapors Particulate

(1) Tables 5.1 and 5.2 show the amount of water typically used and the waste load of a Knit Fabric Finishing Mill.

(2) The energy consumption for knitted Fabric Finishing is, according to reference [14], 20,700 kWh per tonne of finished knit fabric.

(3) Energy required for combined disperse/reactive dyeing of polyester/cotton knit fabric.

**Table 5.1: Amounts of Water Typically used in Knit Fabric Finishing Mills Units m³/t of wool fabric [10]**
Process Description	Minimum	Median	Maximum
Simple	8.3	135.9	392.8
Complex	20.0	83.4	377.8
Hosiery Products	5.8	69.2	289.4

**Table2.2: Characteristics of Knit Fabric Finishing Effluents and Amounts of Waste Load Generated (median values) [10]**
Units	Type of Process	BOD	COD	TSS	O&G	Phenol	Cr	Sulphide
mg/l	Not specified	350	1000	300	53	0.24	0.24	0.2
Kg/t	Simple	27.7	81.1	6.3	4.0	8.7	7.8	13.0
	Complex	22.1	115.4	6.9	3.5	12.0	4.7	14.0
	Hosiery Products	26.4	89.4	6.7	6.6	4.2	6.4	23.8

(1) Processes such as desizing, fibre manufacturing preparation and dyeing.

(2) Simple manufacturing with additional operations such as printing and dyeing.