مهندسی نساجی گیلان:. گیل تکس

سایت تخصصی نساجی و پوشاک

مهندسی نساجی گیلان:. گیل تکس

سایت تخصصی نساجی و پوشاک

تقویم

فروردین 1402

ش	ی	د	س	چ	پ	ج
			1	2	3	4
5	6	7	8	9	10	11
12	13	14	15	16	17	18
19	20	21	22	23	24	25
26	27	28	29	30	31

آمار : 6217679 بازدید Powered by Blogsky

تصفیه پساب حاصل از رنگرزی منسوجات

یکی از منابع عمده ی آلودگی در صنعت نساجی پساب های رنگی حاصل از رنگرزی و چاپ می باشد.

مقاله ی حاضر به بررسی پساب رنگرزی و چاپ می پردازد و راه های تصفیه ی آن را بیان می دارد.

دانلود این مقاله

1. Introduction
Textile industry can be classified into three categories viz., cotton, woolen, and synthetic
fibers depending upon the used raw materials. The cotton textile industry is one of the
oldest industries in China.
The textile dyeing industry consumes large quantities of water and produces large volumes
of wastewater from different steps in the dyeing and finishing processes. Wastewater from
printing and dyeing units is often rich in color, containing residues of reactive dyes and
chemicals, such as complex components,many aerosols,high chroma,high COD and BOD
concentration as well as much more hard-degradation materials. The toxic effects of
dyestuffs and other organic compounds, as well as acidic and alkaline contaminants, from
industrial establishments on the general public are widely accepted. At present, the dyes are
mainly aromatic and heterocyclic compounds, with color-display groups and polar groups.
The structure is more complicated and stable, resulting in greater difficulty to degrade the
printing and dyeing wastewater (Shaolan Ding et al.,2010).
According to recent statistics, China's annual sewage has already reached 390 million tons,
including 51% of industrial sewage, and it has been increasing with the rate of 1% every
year. Each year about 70 billion tons of wastewater from textile and dyeing industry are
produced and requires proper treatment before being released into the environment (State
Environmental Protection Administration ,1994).
Therefore, understanding and developing effective printing-dye industrial wastewater
treatment technology is environmentally important.