Textile Workers Health

Overall Goal: To explore advanced treatment technologies that remove residual color, salinity, refractory organic compounds, and other trace contaminants, making textile wastewater suitable for high-quality reuse in dyeing and finishing. 4.1. The Need for Tertiary Treatment for Reuse 4.2. Adsorption (Activated Carbon): Capturing Stubborn Pollutants 4.3. Advanced Oxidation Processes (AOPs): Destroying Recalcitrant Compounds 4.4. Membrane…

Overall Goal: To understand the principles and common technologies of biological treatment for textile wastewater, focusing on how microorganisms break down organic pollutants and prepare the water for advanced polishing. 3.1. Principles of Biological Treatment: Harnessing Nature’s Engineers 3.2. Activated Sludge Process: The Workhorse of Wastewater Treatment 3.3. Biological Filters (Trickling Filters, Rotating Biological Contactors…

Overall Goal: To understand the fundamental physical and chemical processes involved in primary treatment of textile dyeing and pretreatment wastewater, and their effectiveness in removing major pollutants. 2.1. Equalization & pH Correction: Setting the Stage 2.2. Coagulation & Flocculation: Making the Unsettleable Settle 2.3. Sedimentation / Clarification: Separating the Solids from the Water 2.4. (Optional)…

Lecture 2: Primary Treatment – Removing Bulk Pollutants Lecture 3: Secondary Treatment – Biological Degradation Lecture 4: Tertiary/Advanced Treatment – Polishing for Reuse Lecture 5: Sludge Management & System Integration for Reuse

Welcome back to our series on Textile Pretreatment! We’ve systematically worked our way through all the major physical and chemical cleaning and preparation steps: greige fabric inspection, singeing, desizing, scouring, bleaching, and heat setting. Our final stop in pretreatment, before we move onto dyeing, is a process that enhances the visual appeal of textiles: the…

Welcome back to our series on Textile Pretreatment! We’ve covered the crucial wet processes for cotton, including greige fabric inspection, singeing, desizing, scouring, bleaching, and mercerization. Now, we turn our attention to a critical physical pretreatment, primarily for synthetic thermoplastic fibers like polyester, nylon, and acetate: Heat Setting. 1. Introduction to Heat Setting Heat Setting…

Welcome back to our series on Textile Pretreatment! We’ve systematically moved through cleaning processes like greige fabric inspection, singeing, desizing, and scouring, culminating in bleaching for whiteness. Now, we arrive at a specialized and transformative pretreatment step for cotton: Mercerization. 1. Introduction to Mercerization Mercerization is a chemical treatment for cellulosic fibers (primarily cotton) with…

Welcome back to our series on Textile Pretreatment! We’ve systematically worked our way through greige fabric inspection, singeing, desizing, and scouring. Now that the fabric is clean and absorbent, it’s time to tackle its natural color, which brings us to Bleaching. 1. Introduction to Bleaching Bleaching is a chemical process aimed at destroying or modifying…

Welcome back to our series on Textile Pretreatment! We’ve covered the initial greige fabric inspection and the critical first wet process, singeing (for fuzz removal), followed by desizing (for size removal). Now, we move on to Scouring, a fundamental cleaning process aimed at removing the bulk of the natural and adventitious impurities that remain on…

Welcome back to our series on Textile Pretreatment! After the crucial steps of greige fabric inspection and singeing, the fabric is now ready for its first major wet process: Desizing. This step is critical, especially for woven fabrics made from staple fibers like cotton. 1. Introduction to Desizing Desizing is the process of removing the…