Total Dissolved Solids and Salinity of Dyehouse Effluent
topic
Total dissolved solids measurement by gravimetric evaporation or electrical conductivity conversion quantifies the salt load in textile dyehouse effluent arising from the large quantities of sodium chloride and sodium sulfate electrolytes used to promote dye exhaustion onto cotton in reactive dyeing processes, which can reach 50 to 100 grams per litre in conventional exhaust dyeing.
Role
Quantifies the salinity pollution burden from conventional cotton reactive dyeing that causes osmotic stress in freshwater aquatic organisms and soil salinisation when irrigation water or groundwater is contaminated with textile effluent, driving adoption of low-electrolyte dyeing technologies and membrane desalination treatment for salt recovery and effluent polishing.