OXIDATION

1. The addition of oxygen which breaks down organic waste or chemicals such as cyanides, phenols, and organic sulfur compounds in sewage by bacterial and chemical means. 2 Oxygen combining with other elements

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OXIDAÇÃO TOTAL

“É um processo de tratamento de águas residuárias no qual os lodos biológicos produzidos são transformados por auto-oxidação” (Carvalho, 1981). FONTE: VOCABULÁRIO BÁSICO DE MEIO AMBIENTE – FEEMA

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OXIDAÇÃO BIOLÓGICA OU BIOQUÍMICA

“Processo pelo qual bactérias e outros microorganismos se alimentam de matéria orgânica e a decompõem. Dependem desse princípio a autodepuração dos cursos d’água e os processos de tratamento por lodo ativado e por filtro biológico” (The World Bank, 1978). “Processo em que organismos vivos, em presença ou não de oxigênio, …

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OVERLAND FLOW

A land application technique that cleanses waste by allowing it to flow over a sloped surface. As the water flows over the surface, the contaminants are removed and the water is collected at the bottom of the slope for reuse. Source: World Bank

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OUTFALL

The place where an effluent is discharged into receiving waters. Source: World Bank

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ORGANOPHOSPHATES

Pesticide chemicals that contain phosphorus; used to control insects. They are short-lived, but some can be toxic when first applied. Fount: World Bank. Outfall – The place where an effluent is discharged into receiving waters. Source: World Bank

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ORGANOCLORADOS

“Inseticidas organo-sintéticos, que contêm na sua molécula átomos de cloro, carbono e hidrogênio. Ex.: DDT, Aldrin e Dieldrin” (Batalha, 1987). FONTE: VOCABULÁRIO BÁSICO DE MEIO AMBIENTE – FEEMA

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ORGANIC WASTE

Means – Waste derived from animal and plant materials. Waste that contains carbon compounds. Source: EPA Region 5 and Agricultural & BiologicalEngineering, Purdue University

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ORGANIC CHEMICALS/COMPOUNDS

Animal or plant-produced substances containing mainly carbon, hydrogen, and oxygen. Source: World Bank

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ORGANIC

1. Referring to or derived from living organisms. 2. In chemistry, any compound containing carbon. Source: World Bank

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