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Textile industry is one raising commercial activity in Brazil. This activity has been generating important environmental interferences such as colour and bad biological effects into aquatic environment. Liquid textile effluents are toxic to lived organisms and may present low biological degradability. Although foreseen at federal regulation, the effluent quality is not controlled by toxicity assays in the country. These assays are carried out to determine the potential etTects of chemical substances and effluents to cause negative effects to the exposed organisms. The present work aimed whole toxicity evaluation as well as the applicability of two different treatment techniques: ionizing radiation and zeolite adsorption. The efficacy of them were evaluated using ecotoxicity bases and real effluents. Two different industries from São Paulo State contributed to this project supplying their real effluents. The samples were collected at a Textile Industry and at a Chemical Industry (dying producer) and after the measurement of whole toxicity the samples were submitted to treatments. Toxicity assays were carried out for Daphnia similis and for Vibrio fischeri. Sample irradiations were performed at an Electron Beam Accelerator at CTR/IPEN. Zeolites treatment is an P & D activity from C Q M A / f f E N which contributed to this Project. Zeolites v/ere prepared from fly ash previously being used as an adsorber material. Both treatments (electron irradiation and zeolite adsorption) resulted on important toxicity and colour reduction. Concerning irradiation the efluents from chemical industry required higher radiation doses than that from textile activity. The radiation dose to be suggested is 40kGy (toxicity reduction > 60%) for the chemical effluents and 0.5kGy for the textile effluents (toxicity reduction > 90%). When zeolite adsorption was evaluated the Z1M6 resulted in 85%) v/hole toxicity reduction and ZC6 resulted in very low efficiency for the effluents of chemical industry. T O X I C I T Y A S S A Y S A P P L I E D F O R E V A L U A T I O N O F I O N I Z I N G R A D I A T I O N A N D Z E O L I T E S A D S O R P T I O N AS T R E A T M E N T T E C H N O L O G I E S F O R C O L O U R E D E F F L U E N T MarceLi Cante l l i H iga

Aplicação de ensaios de toxicidade na avaliação da eficiência da radiação ionizante e da adsorção em zeólitas para o tratamento de efluentes coloridos