Pollution Of Water Pollution

879 Words4 Pages
In view of the increasingly stringent environmental policy adopted by industrialized countries, a rising care has been directed to water pollution problem. Significant amounts of water are consumed during processing in many industries using dyes as textile, paper, plastic, leather, food and cosmetics industries. 1-15% of the dye is estimated to be lost in dyeing and finishing processes and are released into waste waters. About 10,000 dyes and pigments are used in the textile industry, most of themare toxic substances to humans and aquatic life; 50,000 tones of dyes are estimated to be discharged from dyeing and coloration industries One of the main sources of environmental contamination is the dye pollutants from these industries, the disposal of these colored waste waters is a threat to the environment [1-5]. Color bath effluents throw shading to the recieving streams. Shading interfers with entrance of daylight into waters, impedes photosynthesis, hinders the development of oceanic biota and interfers with gas solubility in water bodies. Besides, the waste may contain chemicals which are dangerous, cancer-causing, mutagenic, or teratogenic in different microbilogic, fish species [6]. Numerous methods to remove dyes from colored effluents are available: adsorption, precipitation, chemical degradation, photodegradation, biodegradation, chemical coagulation and electrocoagulation. The efficiency of adsorption and precipitation is limited, though they are

More about Pollution Of Water Pollution

Open Document