ارایه روش‌های بهینه جهت تصفیه آب و پساب حاوی رنگ‌های گوگردی
محورهای موضوعی : آب و محیط زیست
سحر طبیبیان
1
(استادیار، گروه کشاورزی و منابع طبیعی، دانشگاه پیام نور، تهران، ایران.*(مسئول مکاتبات))
اعظم پیرکرمی
2
(دانشجوی دکتری، گروه پژوهشی رنگ و محیط زیست، موسسه پژوهشی علوم وفناوری رنگ، تهران.)
کلید واژه: رنگ‌های گوگردی, پساب, روش‌های فیزیکی وشیمیایی, روش‌های بیولوژیکی,
چکیده مقاله :
رنگ های گوگرد ارزان قیمت هستند و به طور عمده برای رنگ آمیزی مواد سلولزی منسوجات و یا مخلوط الیاف سلولزی مورد استفاده قرار می‌گیرند. سولفید سدیم نسبتاً ارزان بوده و از عوامل کاهنده سنتی محسوب می شود و برای رنگرزی رنگ های گوگردی مورد استفاده قرار می گیرد، اما لمس آن، سمی و خطرناک است. استعمال آن ممکن است بقایای مضری در پارچه تکمیل شده به جا بگذارد و پساب هایی تولید می‌کند که تصفیه آن دشوار است و به محیط زیست آسیب می‌رساند. صنایع نساجی با هزینه‌های بالای آب و تصفیه پساب، و همچنین قوانین سختگیرانه محیط زیستی مواجه هستند. در این بررسی، انواع روش‌ها، از جمله روش‌های فیزیکی، شیمیایی و بیولوژیکی از نظر کاربردشان برای تصفیه پساب صنعتی حاوی رنگ های گوگردی مورد بررسی قرار گرفت. این مطالعه با پیشنهاداتی برای اقدامات بیشتری که می‌توان جهت بهبود فرآیندهای تصفیه از هر دو دیدگاه اقتصادی و فنی انجام داد، به پایان می‌رسد.
Abstract Sulfur dyes are inexpensive and mainly used for coloring cellulosic textile materials or mixtures of cellulosic fibers. Sodium sulfite is relatively inexpensive and considered as traditional reducing agents and used for sulfur dyes and dyeing, But touch it, is toxic and dangerous.Using it may be Leave harmful residues on fabrics completed and and produces wastewater which it’s treatment is difficult and damage to the environment. Textile industries are met with high cost of water and wastewater treatment, as well as stringent environmental regulations. In this study, a variety of methods, including methods of physical, chemical and biological treatment of industrial wastewater containing paint application of sulfur was investigated This study concludes with recommendations for additional measures to improve treatment processes that can be done from both a technical and economic point of view.
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