Textile wastewater effluent toxicity identification evaluation

Autor: Martha J.M. Wells, E. C. Roberts, A. J. Rossano
Rok vydání: 1994
Předmět:
Zdroj: Archives of Environmental Contamination and Toxicology. 27:555-560
ISSN: 1432-0703
0090-4341
DOI: 10.1007/bf00214849
Popis: The need to control toxic substances in industrial and municipal wastewater effluents has led to the inclusion in National Pollutant Discharge Elimination System (NPDES) permits of requirements for testing toxicity to aquatic species. Recently, permitted wastewater effluents from particular textile dyeing and finishing operations exhibited a low degree of toxicity to the freshwater Cladoceran Daphnia pulex in acute, static, 48-h testing. An extensive effort was launched to determine components contributing to effluent toxicity. The toxicity identification evaluation combined three elements: fractionation of wastewater effluents, testing for aquatic toxicity, and analyses for specific chemicals. An anionic, speciated form of zinc was implicated as a major contributor to the toxicity. Water hardness was a principal determinant of zinc toxicity to Daphnia pulex.
Databáze: OpenAIRE