The dilutionof the textile wastes by domestic sewage weakens the concentration of the former.
由于生活污水的稀释作用，降低了纺织废水的浓度。
2
The traditional method ofdilution fails to duly guide the evaluation of water quality and effectively control sewage treatment because of complicated operation which may last for 5 to 7 days.
Using domestic sewage as dilution water for high-density gas washing water to obtain two purposes of purifying two kinds of sewage and economizing water as well.